984025 9701r C 743 KSR 745 Portable Maintenance Manual Jul78
984025-9701rC_743_KSR_745_Portable_Maintenance_Manual_Jul78 984025-9701rC_743_KSR_745_Portable_Maintenance_Manual_Jul78
984025-9701rC_743_KSR_745_Portable_Maintenance_Manual_Jul78 984025-9701rC_743_KSR_745_Portable_Maintenance_Manual_Jul78
User Manual: manual pdf -FilePursuit
Open the PDF directly: View PDF 
.
Page Count: 213
| Download | |
| Open PDF In Browser | View PDF |
siLENT 700
electronic data terminals
Model 743 KSR
Model 745 Portable
Maintenance Manual
MANUAL NO. 984025-9701, REV. C
REVISED 1 JULY 1978
TEXAS INSTRUMENTS
INCORPORATED
Copyright 1978 by Texas Instruments Incorporated
All Rights Reserved - Printed In USA
The information and/or drawings set forth in this document and all rights in and to
Inventions disclosed herem and patents which might be granted thereon disclosing or
emploYing the materials, methods, techniques or apparatus described herein are the
exclusive property of Texas Instruments Incorporated.
No copies of the information or drawings shall be made without the prior consent of
Texas Instruments Incorporated.
r--------------------........
INSERT LATEST CHANGED PAGES.DESTROY SUPERSEDED PAGES
LIS T 0 F EFFEC T I V EPA G ES I
Note The portIon of the text affected by the changes IS mdlcated by a vertIcal bar
....-_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _-.-..
In the outer margins of the page.
Models 743/745 Electronic Data Terminals Maintenance Manual
984025-9701, Rev. B
Original Issue: 15 December 1975
Totdl numher of pages In thiS publlcatron IS 213 consisting of the following:
Page
Page
Change
No.
No.
CHANGE NOTICES
Revision
Letter
Date
A
B
C
2-8-77
8-22-77
6-1-78
ECN
Number
Level
423767
425661
439846
Change
No.
No.
C
C
0
Page
No.
J
Description
Update, add drawings and keyboard options
Add new printer mechanism and new PWB electronics
Correct Katakana keyboard section
Change
No.
TABLE OF CONTENTS
Section
Page
Section
EQUIPMENT DESCRIPTION
1. 1 Scope. . . . . . . . . . . . . . . . . . . . ..
1.2 References . . . . . . . . . . . . . . . . . . .
1.3 General Description . . . . . . . . . . . . .
1.3.1 Model 743 ........ " .........
1.3.2 Model 745 . . . . . . . . . . . . . . . . . .
1.4 0 pti ons. . . . . . . . . . . . . . . . . . . . .
1.4.1 Options Available on Both
Models 743 and 745............
1.4.2 Model 743 Options . . . . . . . . . . . .
1.4.3 Model 745 Options . . . . . . . . . . . .
1.5 Physical Dimensions . . . . . . . . . . . . .
3.3.1 Character Spacing . . . . . . . . . . . . . 3-6
3.3.2 Line Spacing. . . . . . . . . . . . . . . . . 3-6
3.3.3 Paper Supply . . . . . . . . . . . . . . . _ 3-6
3.3.4 Paper Loading. . . . . . . . . . . . . . . . 3-6
3.3.5 Paper Tearoff . . . . . . . . . . . . . . . . 3-6
3.3.6 Printhead Pressure . . . . . . . . . . . . . 3-6
3.4 Printhead System . . . . . . . . . . . . . . 3-6
3.4.1 Printhead Address Drivers . . . . . . . . 3-6
3.4.2 Temperature Compensation
Circuit . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.3 Print Voltage Circuit . . . . . . . . . . . 3-7
3.5 Mechanism Drive Electronics . . . . . . . 3-9
3.5.1 Motor Drive Electronics . . . . . . . . . 3-10
3.5.2 Solenoid Drivers . . . . . . . . . . . . . . 3-13
3.6 Keyboards . . . . . . . . . . . . . . . . . . .3-14
3.6.1 Standard Keyboard . . . . . . . . . . . . 3-14
3.6.2 Optional Full-ASCII Keyboard ..... 3-14
3.6.3 Receive-Only Control Panel . . . . . . .3-20
3.6.4 APL/ASCII Keyboard . . . . . . . . . . 3-20
3.6.5 Katakana Keyboard . . . . . . . . . . . . 3-23
1-1
1-1
1-1
1-1
1-1
1-1
1-1
1-3
1-3
1-4
1.6 Environmental Limits. . . . . . . . . . . . 1-4
1.6.1 Nonoperating Environment. " ..... 1-4
1.6.2 Operating Environment . . . . . . . . . 1-4
2
EQUIPMENT INSTALLATION
2.1 Preliminary Checkout. . . . . . . . . . . . 2-1
2.2 Power Connection . . . . . . . . . . . . . . 2-1
2.3 Communications
Interconnections . . . . . . . . . . \.' .. '.. 'i2~ 1'~
2.3.1 Acoustic Coupler Configuration,
Model 745 . . . . . . . . . . . . . . . . . .
2.3.2 EIA Configuration, Model 743 .....
2.3.3 TTY Configuration, Model 743 ... :
2.3.4 Internal Modem Configuration,
Model 743 ........... .': ... : .
2.3.5 Auxiliary EIA Configuration ..... :
2.4 Loading Paper. . . . . . . . . . . . . . . . .
2.5 Adjustments ..... " ..... ; . . . . . . .
2.5.1 Print Contrast . . . . . . . . . . . . . . . .
2.5.2 Acoustic Coupler and Modem
3.7 Operator Controls and
Indicators . . . . . . . . . . . . . . . . . . .3-25
3.8 Power Supply . . . . . . . . . . . . . . . . . 3-25
3.8.1 Power Transformer . . . . . . . . . . . . 3-26
3.8.2 Voltage Regulator . . . . . . . . . . . . . 3-27
3.8.3 Failure Protection . . . . . . . . . . . . . 3-28
3.8.4 Soft Start Circuit. . . . . . . . . . . . . . 3-28
3.8.5 Electromagnetic Interference
(EMI) Filter . . . . . . . . . . . . . . . . . . 3-28
3.8.6 Electrical Power Interface . . . . . . . .3-28
3.9 Current Loop Interface. . . . . . . . . . . 3-28
3.9.1 Receiver Circuit . . . . . . . . . . . . . .3-28
3.9.2 Transmit Circuit . . . . . . . . . . . . . .3-29
3.10 Firmware . . . . . . . . . . . . . . . . . . . 3-30
3.10.1 Power-Up Routine . . . . . . . . . . . . 3-33
3.10.2 Keyboard Routine . . . . . . . . . . . . 3-33
3.10.3 Receiver Routine. . . . . . . . . . . . .3-34
3.10.4 Data Control Routine . . . . . . . . . . 3-34
3.10.5 Character Analyzer . . . . . . . . . . . 3-35
3.10.6 Character Buffering . . . . . . . . . . . 3-36
3.10.7 Paper Advance Operation . . . . . . . 3~39
3.10.8 Answer-Back Memory . . . . . . . . .3-39
3.10.9 Left Margin/Paper-Out
Detection . . . . . . . . . . . . . . . . . .3-39
3.11 Acoustic Coupler/Modem . . . . . . . .3-40
3.11.1 Receiver Section . . . . . . . . . . . . . 3-41
3.11.2 Transmitter Section . . . . . . . . . . .3-43
2-1
2-3
2-4
2-5
2-5
2-7
2-7
2-7
Adjustmen'ts. . . . . . . . . . . . . . . . . 2-7
3
THEORY OF OPERATION
3.1 Functional Description . . . . . . . . . . .
3.2 Control Electronics . . . . . . . . . . . . .
3.2.1 Communications Discipline . . . . . . .
3.2.2 Speed . . . . . . . . . . . . . . . . . . . . .
3.2.3 Buffering . . . . . . . . . . . . : . . . . . .
3.2.4 Character Structure . . . . . . . . . . . .
3.2.5 Parity . . . . . . . . . . . . . . '. . . . . . .
3.2.6 Duplex Operation . . . . . . . . . . . . .
3.2.7 Answer-Back Memo'ry Option .....
3.2.8 Keyboard Scan . . . . . . . . . . . . . . .
3.2.9 Mechanism Control . . . . . . . . . . . .
3.3 Printer Mechanism . . . . . . . . . . . . . .
Page
3-1
-3-2
3-2
3-2
3-2
3-2
3-5
3-5
3-5
3-5
3-5
3-6
iii
TABLE OF CONTENTS, (CONTINUED)
Section
4
Section
Page
MAl NTENANCE
4.1 Preventive Maintenance . . . . . . . . . .
4.2 Troubleshooting . . . . . . . . . . . . . . .
4.3 Adjustments . . . . . . . . . . . . . . . . . .
4.3.1 Pri nt Contrast. . . . . . . . . . . . . . . .
4.3.2 Acoustic Coupler or Modem
Transmit Adjustment . . . . . . . . . . .
4.3.3 Printer Subsystem Adjustments ....
4.4 Su bassembly Replacement . . . . . . . .
4.4.1 Outer Cover Removal
(Model 745 Only) . . . . . . . . . . . . .
4.4.2 Outer Cover Installation
(Model 745 Only) . . . . . . . . . . . . .
4.4.3 I nner Cover Removal (Both
Mode"ls) . . . . . . . . . . . . . . . . . . . .
4.4.4 Inner Cover Installation . . . . . . . . .
Page
4.4.5 Mechanism Removal
4.4.6 Mechanism Installation . . . . . . . . . .
4.4.7 Keyboard Removal . . . . . . . . . . . .
4.4.8 Keyboard Installation. . . . . . . . . . .
4.4.9 Fan Removal and Installation .....
4.4.10 PWB Removal. . . . . . . . . . . . . . .
4.4.11 PWB Installation. . . . . . . . . . . . .
4.4.12 Printhead Removal . . . . . . . . . . .
4.4.13 Printhead Installation . . . . . . . . . .
4.4.14 Option PROM Replacement .....
4-1
4-1
4-1
4-1
4-3
4-3
4-6
4-7
4-7
4-7
4-8
4-8
4-8
4-8
4-8
4-8
4-9
4-6
APPENDIX
4-6
Assembly Drawings and Lists of Material
and Electronic Schematics
4-6
4-6
LIST .oF ILLUSTRATI.oNS
Figure No.
Page
Figure No.
1-1
Models 743/745 Data Terminals . . . . . . . . 1-2
3-8
2-1
Major Components & Controls
(typical) . . . . . . . . . . . . . . . . . . . . . .
Model 743 TTY Configurations . . . . . . . .
EIA/Auxiliary Coupler Connections
for the Model 745 . . . . . . . . . . . . . . . .
Auxiliary EIA Modem Connections
for the Model 743 . . . . . . . . . . . . . . . .
Paper Loading Diagram . . . . . . . . . . . . . .
3-9
2-2
2-3
2-4
2-5
2-2
2-4
3-10
2-6
3-11
2-8
2-9
3-12
3-13
3-1
3-2
3-3
3-4
3-5
3-6
3-7
Models 743/745 Simplified Block
Diagram . . . . . . . . . . . . . . . . . . . . . . . 3-1
Serial Data Timing Diagram . . . . . . . . . . . 3-2
Model 743/745 Printing Su bsystem
Block DiagrClm . . . . . . . . . . . . . . . . . . 3-7
Printhead Matrix and Address Lines, and
Printhead Element Block Diagram ..... 3-8
Printhead Interface Timing (For
Letter "F") . . . . . . . . . . . . . . . . . . . . 3-9
Motor Drive Circuit Block Diagram ...... 3-10
Motor Drive Circuit Feedback Sensor
Output Characteristics . . . . . . . . . . . . . 3-11
3-14
3-15
3-16
3-17
3-18
3-19
iv
Page
Feedback Sensor Light Path
Schematic . . . . . . . . . . . . . . . . . . . . . 3-12
Feedback Sensor 02, 03 Circuit
Schematic . . . . . . . . . . . . . . . . . . . . . 3-12
APL and ASCII Character Set
Generation . . . . . . . . . . . . . . . . . . . . .3-15
Katakana and ASCII Character Set
Generation . . . . . . . . . . . . . . . . . . . . . 3-16
Standard Keyboard ,Layout and
Symbolization . . . . . . . . . . . . . . . . . . 3-17
Code Generating Keys With No Mode
Keys Depressed . . . . . . . . . . . . . . . . . . 3-17
Code Generating Keys With CRTL
Key Depressed . . . . . . . . . . . . . . . . . . 3-17
Code Generating Keys With Numbers
Key Depressed . . . . . . . . . . . . . . . . . .3-18
Code Generating Keys With Shift
Key Depressed . . . . . . . . . . . . . . . . . . 3-18
Optional Full-ASCII Keyboard
Layout and Symbolization . . . . . . . . . . 3-18
Codes Generated With No Mode
Keys Activated . . . . . . . . . . . . . . . . . .3-19
'
Codes Generated With the SHIFT
Key Pressed and Held . . . . . . . . . . . . . .3-19
LIST OF ILLUSTRATIONS (CONTINUED)
Figure No.
3-20
3-21
3-22
3-23
3-24
3-25
3-26
3-27
3-28
3-29
3-30
3-31
3-32
3-33
3-34
Page
Figure No.
Codes Generated With the CTR L Key
Pressed and Held . . . . . . . . . . . . . . . . .3-19
Receive-Only Control Panel . . . . . . . . . . . 3-20
Optional APL Keyboard Layout and
Symbol ization . . . . . . . . . . . . . . . . . . .3-20
Codes Generated in the APL Mode with no
Mode Keys Activated (APL Keyboard) ... 3-21
Codes Generated in the APL Mode with the
SHIFT Key Pressed and Held(APL
Keyboard) . . . . . . . . . . . . . . . . . . . . . 3-21
Codes Generated in the ASCII Mode with
no Mode Keys Activated (APL Keyboard)3-21
Codes Generated in the ASCII Mode with
the SH I FT Key Pressed and Held
(APL Keyboard) . . . . . . . . . . . . . . . . . 3-22
Codes Generated in the ASCII Mode with
the CTR L Key Pressed and Held
(APL Keyboard) . . . . . . . . . . . . . . . . . 3-22
Katakana Keyboard Layout and
Symbolization . . . . . . . . . . . . . . . . . .3-23
Katakana Keyboard Codes Generated
in the Unshifted Kana Mode . . . . . . . . .3-24
Katakana Keyboard Codes Generated
in the Kana Mode with SH I FT
Pressed and Held . . . . . . . . . . . . . . . . .3-24
Katakana Keyboard Codes Generated
in the Unshifted Alpha Mode . . . . . . . . . 3-24
Katakana Keyboard Codes Generated
in the Alpha Mode with SHIFT
Pressed and Held . . . . . . . . . . . . . . . . .3-25
Katakana Keyboard Codes Generated
with the CTR L Key Pressed and Held ... 3-25
Model 743/745 Power Supply
Functional Block Diagram . . . . . . . . . . . 3-26
3-35
3-36
3-37
3-38
3-39
3-40
3-41
3-42
3-43
3-44
3-45
4-1
4-2
4-3
4-4
Page
Transient Surge ac Voltage Step Function
Loci Limits for 110 Vac Operation ..... 3-29
Model 743/745 Firmware Control
System Block Diagram . . . . . . . . . . . . . 3-30
Functional Block Diagram I/O and
Timer Device . . . . . . . . . . . . . . . . . . .3-31
Model 743/745 Firmware Structure ..... 3-32
Model 743/745 Keyboard Matrix
Encoding Scheme . . . . . . . . . . . . . . . .3-33 '
Models 743/745 Print/Step Routine
Pulse Train . . . . . . . . . . . . . . . . . . . . .3-35
Print/Step Routine State Diagram . . . . . . .3-37
Stepping Motor Line Feed (LF) Routine
Timing Diagram . . . . . . . . . . . . . . . . .3-38
Carriage Return Routine State
Diagram . . . . . . . . . . . . . . . . . . . . . . .3-30
Frequency-Shift Keying (FSK)
Modulation . . . . . . . . . . . . . . . . . . . .3-40
Acoustic Coupler/Modem Block
Diagram . . . . . . . . . . . . . . . . . . . . . . . 3-33
Models 743/745 Component
Locations. . . . . . . . . . . . . . . . . . . . . . 4-2
Module Connectors and Printhead
Components . . . . . . . . . . . . . . . . . . . . 4-4
Printhead Adjustments and
Components . . . . . . . . . . . . . . . . . . . . 4-5
Power Cord Storage in 745 Outer
Cover . . . . . . . . . . . . . . . . . . . . . . . .4-11
Troubleshooting Flow Diagrams . . . . . . . .4-12
LIST OF TABLES
Table No.
1-1
Table No.
Page
2-3
Options for the Models 743/745
Data Terminals . . . . . . . . . . . . . . . . . . 1-3
2-4
2-1
2-2
External Interface Connector
Pin Assignments . . . . . . . . . . . . . . . . . 2-3
Model 743 EIA Interface Cable Pin
Assignments. . . . . . . . . . . . . . . . . . . . 2-3
2-5
2-6
v
Page
Teletype Current Loop Cable Pin
Assignments. . . . . . . . . . . . . . . . . . . .
Options Internal Modem Cable Pin
Assignments. . . . . . . . . . . . . . . . . . . .
EIA/Auxiliary Acoustic Coupler Cable
Pin Assignments Model 745 . . . . . . . . . .
EIA/Auxiliary Modem Cable Pin
Assignments for Model 743 . . . . . . . . . .
2-4
2-5
2-6
2-8
J
LIST OF TABLES (CONTINUED)
Table No.
3-1
3-2
3-3
3-4
Table No.
Page
APL and ASCII Code System and
Character Set. . . . . . . . . . . . . . . . . . . 3-3
Katakana and ASCII Code System and
Character Set. . . . . . . . . . . . . . . . . . . 3-4
Power Supply dc Output. . . . . . . . . . . . . 3-26
Firmware Operating System
Interrupts . . . . . . . . . . . . . . . . . . . . . 3-32
3-5
Acoustic Coupler FSK Transmission
Frequency Assignments . . . . . . . . . . . . 3-41
4-1
Models 743/745 Optional Internal
Electronics Jumpers . . . . . . . . . . . . . . . 4·9
Keyboard Kit and Option PROM
Replacement Part Numbers . . . . . . . . . . 4·9
4-2
vi
Page
SECTION I
EQUIPMENT DESCRIPTION
1.1 SCOPE.
The standard Models 743 and 745 feature a 58-key,
TTY 33-compatible, modular keyboard with integral
numeric keypad, carrier-detect indicator, two-key
rollover, and key debounce circuitry. Various optional keyboards are described in Section 1.4.
This manual contains descriptions, installation instructions, theory of operation, and maintenance
procedures for the Silent 700* Models 743 and 745
Electronic Data Terminals manufactured by the
Digital Systems Division of Texas I nstruments I ncorporated. The information in this manual is intended
to help in maintaining and servicing these data
terminals. The troubleshooting data is designed to
hel p isolate problems to one of the five major
assemblies.
Both models are designed and built using snap-in,
quick replacement modules for fast, simple, field
maintenance. The primary modules include the case,
keyboard, printhead and paper drive mechanism,
cooling fan, and the printed-wiring board (PWB)
which contains all electronics.
A general description of the Models 743/745 and
available options Is included in th is section of the
manual. Necessary interfacing and installation information is contained in Section 2, and a general theory
of operation is included in Section 3. Maintenance
and troubleshooting procedures are contained in
Section 4. Lists of materials, related mechanical
drawings, and electrical schematics are included in the
appendix to this manual.
1.3.1 MODEL 743. The TI Model 743 Data Terminal,
shown in Figure 1-1, is a light-weight, table-top
electronic-printing data terminal capable of operating
in full- or half-duplex modes at 10 or 30 characters
per second. The Model 743 uses a character set and
code compatible with the American Standard Code
for Information Interchange (ASCII). The standard
communications interface provided with this model is
the EIA RS-232-C.
1.2 REFERENCES.
Other TI manuals concerning the Models 743/745
Data Terminals include:
•
Model 743 Operating Instructions, TI
Part No. 984030-9701
•
Model 745 Operating Instructions, TI
Part No. 984024-9701.
1.3.2 MODEL 745. The TI Model 745 Portable Data
Terminal, shown in Figure 1-1, is a light-weight,
portable, electronic-printing data terminal with a
built-in acoustic coupler and integral carrying case.
The Model 745 is capable of operating in full- or
half-duplex modes at 10 or 30 characters per second,
using a character set and code compati ble with the
American Standard Code for Information Interchange
(ASCII). The Model 745 is designed to use standard
commercial telephone facilities for interrogation of
computerized data bases from a remote location.
1.3 GENERAL DESCRIPTION.
The Silent 700* Models 743/745 Electronic Data
Terminals are self-contained, compact, durable machines designed for use in a wide variety of telecommunications systems. Silent electronic printing is
achieved using a five-by-seven-dot matrix mounted on
a monolithic, solid-state printhead which prints up to
80 characters across the page. The dot matrix is
composed of 35 individual, solid-state heating elements, each electronically controlled. Voltage is
applied to the appropriate elements in the matrix for
each printable character. The thermal energy thus
generated is transferred to heat-sensitive paper, creating a visible image.
1.4 OPTIONS.
Several options are available for both the Model 743
and 745, but some options may be used on only one
model. Options for both models are listed in Table
1-1.
1.4.1 OPTIONS AVAILABLE ON BOTH MODELS
743 AND 745. The following options are available for
both models.
*Tradem«k of Texas Instruments Incorporated
1-1
1.4.1.2 Parity Options. The standard Models 743 and
745 are shipped with even parity for transmitted
data. Factory-installed odd, mark, or space parity is
1.4.1.1 Answer-Back Memory. The optional AnswerBack Memory configuration provides a customerspecified, 1- to 21-character identification sequence
which is transmitted to the communications line
upon receipt of the ENQ code from the line Or upon
actuation of the HERE IS key by the operator. In
addition to the character sequence, the customer also
specifies whether or not the transmitted sequence of
characters is printed if the terminal is in the half
duplex mode. The answer-back contents are not
printed when the terminal is off-line and the ENQ
code is received.
ava ilable as specified in the original purchase order.
1.4.1.3 Full-ASCII Keyboard. An optional Full-ASCII
keyboard is available for both Models 743 and 745.
This keyboard transmits, receives, and prints both
uppercase and lowercase alphabet characters using the
SH I FT key as on a standard typewriter. A special
UPPER CASE rocker switch is provided to permit
generating/printing uppercase-only alphabet characters.
P1000032a&1:
Figure 1-1. Models 743/745 Data Terminals
1-2
Table 1-1. Options for the Models 743/745
Data Terminals
Option
l
I
unit into a TTY 33-compatible, current loop interface.
This interface may be used in either four-wire or
two-wire communications systems. The nominal
operating current is 20 milliamps dc. A 6-foot cable
terminated in four spade lugs is provided with this
option.
Available For:
Model 743
I
Model745
Acoustic Coupler
No
Yes (standard)
Auxiliary Use of
Acoustic Coupler
No
Yes
Internal Modem
Yes
No
Auxiliary Use of Modem
Yes
No
EIA RS-232-C
Yes
Yes*
EIA 103A/113A
Yes
No
TTY Half Duplex
Yes
No
TTY Full Duplex
Yes
No
European (CCITT)
Acoustic Coupler
No
Yes
Answer-Back
Memory
Yes
Yes
Full-ASCII Keyboard
Yes
Yes
Receive-only Keyboard
Yes
Yes
APL/ASCII Keyboard
Yes
Yes
Katakana Keyboard
Yes
Yes
1.4.2.2 Internal Modem. The Modem configuration
converts the EIA levels of the standard Model 743 to
FSK signals for presentation to a Bell-type COT,
manual Data Access Arrangement (DAA). When
connected to the DAA, the modem is functionally
equivalent to a Bell 103A Data Set. It meets all
interface requirements of the DAA, including adjustment of the transmit level without removal of any
parts. A 6-foot cable, terminating in two spade lugs, is
supplied for COT DAA connection.
1.4.2.3 EIA/Auxiliary Modem Cable. The EIA/
Auxiliary Modem Cable for the Model 743 is applicable only to the internal modem configuration. It
provides separate EIA interfaces to the keyboard/
printer and to the internal modem, which permits
connection of an external device (e.g., tape cassette,
plotter, etc.) between the two interfaces. The 6-foot
cable supplied provides COT DAA spade lug terminations as well as a 25-pin male connector for terminating the keyboard/printer interface and a 25-pin
female connector for terminating the internal modem
EIA interface. Both connectors are compatible with
the requirements of EIA Specification RS-232-C.
With these two connectors mated the terminal
functions as described in paragraph 1.4.2.2 above.
*With Auxiliary Acoustic Coupler
1.4.1.4 APL/ASCII Keyboard. An optional APL/
ASCII keyboard is available for both Models 743 and
745. This keyboard transmits, receives, and prints
either in the full-ASCII mode or in the APL mode,
depending on the position of the APL/ASCII mode
select switch.
1.4.3 MODEL 745 OPTIONS. The following options
are available only for the Model 745.
1.4.3.1 EIA/Auxiliary Coupler Interface. The EIA/
Auxiliary Coupler Interface option of the Model 745
prOVides separate EIA interfaces to the internal acoustic coupler and to keyboard/printer functions. This
option enables connection of an external device (e.g.,
tape cassette, plotter, etc.) between the two interfaces. The 6-foot cable supplied provides a 25-pin
male connector for terminating the keyboard/printer
interface and a 25-pin female connector for terminating the internal acoustic coupler. Both connectors
are compatible with the requirements of E IA Specification RS-232-C. With these two connectors plugged
together, the terminal functions the same as a basic
Model 745.
1.4.1.5 Receive-Only Option. A receive-only control
panel replaces the standard keyboard of either model
data terminal. The receive-only Models 743 and 745
are available with the Answer-Back Memory option
and limited-ASCII or full-ASCII. The control panel
has PAPER ADV and LOW SPEED controls and a
carrier-detect indicator.
1.4.2 MODEL 743 OPTIONS. The following options
are available only on the Model 743 data terminal.
1.4.2.1 Current Loop Interface. The Current Loop
Interface option converts the EIA levels of the basic
1-3
1.4.3.2 C.C.I.T.T. Acoustic Coupler. The C.C.I.T.T.
Acoustic Coupler option converts the EIA'levels of
the basic unit to FSK tones for presentation to a
standard commercial
telephone
handset. The
C.C.I.T.T. Acoustic Coupler operates in full duplex
mode over switched telephone networks at data rates
up to 300 baud in accord with the requirements of
3.
Shock: Drop from 40 inches on each
surface and corner
4.
Vibration; Sinusoidal, 2G, 5 to 50 Hz;
4G, 50 to 500 Hz; 6-mlnute linear sweep
5.
Altitude: 50,000 feet
6.
Cargo Bounce: per MIL-STD 810B;
1-lnch double amplitude orbital motion,
225 RPM, 30 minutes per side.
C.C.I. T. T. Recommendation VIII, Data Transmission.
Like the U.S. acoustic coupler for the basic Model
745, this version operates in the originate mode only:
no signals are transmitted until the carrier signal is
received from the answer end of the communication
link.
Out of Shipping Container:
1.5 PHYSICAL DIMENSIONS.
1.
The Model 743 Data Terminal is a compact unit
designed for desk-top use. The Model 745 Data
Terminal is a self-contained unit designed to fit easily
beneath a commercial airliner seat. The Model 745
outer structure is built to afford the same protection,
from both the elements and physical abuse, as a
sturdy attache case.
Model 745
16.0
15.4
4.6
3.
Shock:
4.
13.5 pounds
11.2 pounds.
1.
Ambient temperature: 10°C to 40°C*
2.
Relative humidity: 10 percent to 90
percent without condensation
3.
Altitude: to 12,000 feet
4.
Vibration: sinusoidal vibration of 0.5G
peak In the range of 10 to 60 Hz
5.
Shock: OG
6.
Temperature shock: operate in a 25°C,
50 percent relative humidity environment
within 30 minutes after being stored for 2
hours at _30° C at 50 percent relative
humidity.
1.6 ENVIRONMENTAL LIMITS.
1.6.1 NONOPERATING ENVIRONMENT. The terminal, exclusive of the thermal paper, will operate
within the minimum specified performance requirements after enduring the following environmental
conditions.
In Shipping Container:
These specifications apply to equipment hardware;
for paper limitations see TI Paper Specification
972603 (maximum temperature in the vicinity of
paper roll is less than 5° C greater than am bient
temperature).
1.
2.
Vibration: Sinusoidal 1.5G, 5 to 500 Hz.
1.6.2 OPERATING ENVIRONMENT. The terminals
will operate within specifications under the following
environmental conditions.
Model 743
15.25
14.60
4.25
Weight
The maximum weight of the Models 743 and 745
terminals with paper is
Model 745
Model 743
Relative Humidity: 10% to 95% without
condensation
Portable model
20G for 11 mill iseconds
Size
The overall terminal dimensions (in inches) are
Depth:
Width:
Height:
2.
Relative Humidity: -10% to 95% without
condensation
* Derate upper limit 1°C per 1000 feet above 6000 feet altitude.
1-4
SECTION 2
EQUIPMENT INSTALLATION
2.1 PRELIMINARY CHECKOUT.
2.3.1 ACOUSTIC COUPLER CONFIGURATION,
MODEL 745. Using the built-in acoustic coupler, the
communications link is established as follows.
Visually check the data terminal before applying
power. After unpacking, check for any obvious
shipping damage such as a damaged top cover. Look
for packing material inside the mechanism and paper
roller. Verify that the inner cover and base fit snugly
together.
NOTE
The printer will not operate without
paper on the drive roller since damage to
both platen and printhead could result.
After loading paper the control logic
should be reset by cycling power off and
on or by pressing the carriage RETURN
key.
a.
Switch terminal power on and press the
carriage RETURN key.
b.
Set the LOW SPE ED rocker switch on the
keyboard to the right for 30 CPS* or to
the left for 10 CPS; these rates equal 300
baud and 110 baud, respectively.
c.
Set the transmission mode (HALF DUP)
switch on the keyboard to the HALF
(left) or full (right) 0 UPlex mode.
d.
Set the ON
position.
e.
Lift the telephone handset from the
cradle and dial the appropriate number to
connect the Model 745 to the data
equipment at the other end of the telephone line.
f.
When an audible high-frequency signal
(mark) is heard on the receiver, place the
telephone handset into the aco ustic coupler muffs so that the telephone handset
cord is to the left side of the data
terminal. Wait 3 to 7 seconds for the
CARRIER DETECT indicator to illuminate.
2.2 POWER CONNECTION.
The Models 743/745 Data Terminals are manufactured to operate from three-wire 115-Vac power. The
power cord plugs into the right rear of the terminal
(see Figure 2-1).
Two power cords are used with the Models 743/745:
•
Terminal serial numbers OX743YYYYY
and OX745YYYYY use part number
972674-0001.
•
Terminal serial numbers OX744YYYYY
and OX746YYYYY use part number
996289-0002.
2.3 COMMUNICATIONS INTERCONNECTIONS.
LINE switch to the left
NOTE
Take special care to insert the handset
into the muffs so that the outer lip of
each muff mates with the grooves surrounding the handset earpiece and
mouthpiece. The removable caps on the
handset must be completely surrounded
by the inside circumference of the muffs.
The communications interface for the Model 745
Portable is available through the telephone handset
muffs located at the top rear of the case.
The external (cable) interface for the Model 743 KSR
and for the Model 745 with the EIA/Auxiliary
Coupler option is available through a 15-pin connector at the rear of the terminal. Signals available at the
external interface connector are defined in Table 2-1.
Specific configuration connections are described in
the following paragraphs.
g.
*CPS
2-1
=
Begin communication according to your
system instructions.
characters per second
POWER
CORD
STORAGIt
OUTER
COVER*
ACOUSTIC
_" _ _~ COUPLER
MUFFS*
~
ACOUSTIC
COUPlER*l
~
PLATEN AND
DANCING
ROLLER
(UNDER PAPER)
CARRIER-DETECT
INDICATOR
(REAR VIEW)
POWER CORD
CONNECTOR --..,;~~
IDENTIFICATION LABEL
(MODEL, VOLTAGE, POWER, SERIAL NO.)
·NOTE: MODEL 745 only
Figure 2-1. Major Components and Controls (Typical)
2-2
Table 2-1. External Interface Connector Pin Assignments
I
J403
Pin No.
9
co
CJ
~ ~
C1l
~
c:
-c:
External
11
;t
2
.~ 11 [Term;nal
External
10 of!
8
CJ
._
c:
Terminal
"C1l
~
3
E-c:
External
6
8W
External
E~
7
External
5
External
4
t
External
Terminal
10
1.
2.
CR Busy - Low power TTL level, high-true when printhead is lifted (for test only)
DTR - EIA level held to ON condition when terminal is on-line
XMTD - Transmit data; EIA level held to MARK state when no data is being transmitted
RCVD - Receive data; EIA level held to MAR K state by external device when no data is
to be printed
CDET - Carrier detect; EIA level held to ON condition by external device when data
is to be received on pin 12
CAROET - Carrier detect; EIA level held to ON condition by terminal when carrier is detected
RCVOA TA - Receive data; EIA level held to MARK state by terminal when no data
is being received
XMIT DA TA - Transmit data; EIA level held to MARK state by external device when no data
is to be transmitted
RL 1 - Input side of receive data current loop when current loop option is installed;
otherwise, 3.3k ohms to +5V
RL 2 - Return side of receive data current loop when current loop option is installed;
otherwise, 3.3k ohms to +5V
OT - Data Tip; DAA signal when modem option is installed
X1 - I nput side of transmit data current loop when current loop option is installed
OR - Data ring; D~A signal when modem option is installed
X2 - Return side of transmit data current loop when current loop option is installed
P12V - Spare EIA level held to ON condition when terminal power is on (3.3k ohms to +12V)
"[Term;nal
~ ~ Terminal
.8>
Function
Protective Ground - Connected to terminal chassis and power cord ground
Signal Ground - Common return for all data and control lines
Common
Terminal
Terminal
"C
"-
14
15
13
12
I
Source
NOTES
The terminal connector (J403) is a 15-pin (male) plug, AMP PIN 206913-2, or Amp pIN 205867-2, or equivalent.
The mating (cable) connector (P1) is a 15-pin (female) receptacle, Amp PIN 205205-1 or equivalent.
h.
mating 15-pin female connector on the data terminal
end is provided with the standard EIA interface for
the Model 743 terminal. Pin assignments are listed in
Table 2-2. Complete the following steps to establish
the communications link.
In the event the communication link is
lost during operation, replace the handset
into its cradle, and repeat steps e through
9 above.
2.3.2 EIA CONFIGURATION, MODEL 743. A
6-foot cable with a 25-pin male connector (Cannon
DB-25P or equivalent) on the modem end and a
a.
Connect the 6-foot cable between the
terminal and the data set.
Table 2-2. Model 743 EIA Interface Cable Pin Assignments
103A Data Set (Cable Part No. 983848)
Pl Connector
to Modef 743
P1-9
P1-13
P1-12
P1-1
P1-11
P1-15
Pl-10
I
P2 Cable
Termination
P2-1
P2-2
P2-3
P2-7
P2-8
P2-20
P2-4
I
l13A Data Set (Cable Part No. 983854)
Connector to
Model 743
Function
Protective Ground
Transmit Data
Receive Data
Signal Ground
Data Carrier Detect 1
Data Terminal Ready2
Request to Send 3
P1-9
P1-13
P1-12
Pl-1
Pl-15
P1- 1O
P1-ll
I
Cable
Termination
J
NOTES
Must be > +3 V to receive data.
2 FunctIon of ON LINE SWitch: > +3 V when on-line
< -3 V when off-line.
3 > +3 V when power is ON.
I
2-3
P2-l
P2-2
P2-3
P2-7
P2-20
I
Function
Protective Ground
Transmit Data
Receive Data
Signal Ground
Data Terminal Ready 3
{ Terminal Carrier Detect
Biased ON
b.
c.
Set the LOW SPEED rocker switch on the
keyboard to the appropriate speed: left
for 10 CPS or right for 30 CPS.
1--------,
Switch terminal power on and press the
RETURN key.
~
Full Duplex
I MODEL 743
1
Xl
cS~~~~~T
1
I
LI N E switch to the left
I
X2 I
I
I
I
RU ,
4
I
Begin communications according to your
system instructions.
I
RL2
L _______
I
. Table 2-3. Standard dc-Current Loop
I nterface Cable Pin Assignments
(Cable Part No. 983850)
Cable
Termination
I
EXTERNAL
TRANSMITTER
AND
CURRENT
SOURCE
(GREEN)
>---......-~
Pl.7
Half Duplex
IwiO~L ~
I
I
I
I,
(RCV)
I
P1 Connector
to Model 743
"
I
1
foot cable (TI Part No. 983850-0001) is provided to
connect the Model 743 to the communication line.
This cable consists of a 15-pin connector for connection at the rear of the terminal, and four spade lugs at
the other end of the cable. Pin assignments are listed
in Table 2-3. Use the following procedure to complete the communication link for four-wire (fullduplex) and two-wire (half-duplex).
(WHITE)
)
Pl 6
I
I
2.3.3 TTY CONFIGURATION, MODEL 743. A 6-
(RED)
Pl 4
I
e.
EXTERNAL
RECEIVER
AND
CURRENT
SOURCE
I
I (XMIT)
I L ____ .J
Set the ON
position.
d.
'>---------4----71
Pl·5
11---'
1
(BLACK)
I
~
r -
~
I
I
I
r
-
-
-
- - - -,
IBLACK)
» '>--~-'---7I
4
5
Pl
CURRENT I
SWITCH I
:
I
L _ _ _ _ ..J
I
I
X2
L----~---R
....
L-l-'3>P<:4
I
Function
~1;
-
Pl
IRED)
IWHITE)
6
f
EXTERNAL
TRANSMITTER!
RECEIVER
AND
CURRENT
SOURCE
I
1
I
P1-6
P1-7
P1-5
P1-4
RL 1 lug (white wire)
RL2 lug (green wire)
X 1 lug (black wire)
X2 lug (red wire)
P1-13]
P1-3
743
743
743
743
Rcv Loop Input
Rcv Loop Return
Xm It Loop Input
Xmlt Loop Return
L _____
I
~_;,~
IGREEN)
•
Transmit Jumper
P1-12]
P1-8
Receive Jumper
P1-11]
P1-2
Terminal Carrier
{ Detect blilsed ON
Figure 2-2_ Model 743 TTY Configurations
NOTE
Signal ground is not required when using
the dc current loop interface, since the
transmit/receive current loop circuitry
utilizes optically coupled isolators.
a.
RL2
1
b.
Set the LOW SPE ED rocker switch to the
left position for 10 CPS or to the right
for 30 CPS.
c.
Switch terminal power on and press the
RETURN key.
For full duplex mode connect the four
wires [Xl and X2 (transmit pair) and
R L 1 and R L2 (receive pair)] to the signal
source as shown in Figure 2-2. For half
duplex operation connect Xl and R L2 to
the communication source. Connect X2
to R L 1, thus putting the terminal's transmit and receive leads in series as shown in
Figure 2-2.
d.
Set the ON LI N E rocker switch to the
left position.
e.
The terminal should be operable. If not,
check polarity of the leads described in
step a above, and repeat steps b through
d.
2-4
2.3.4 INTERNAL MODEM CONFIGURATION,
MODEL 743. A 6-foot cable (TI Part No.
983849-0001) terminated in two spade lugs is available for the Model 743. This cable provides standard
data tip (DT) and data ring (DR) output/input
signals. Pin assignments are listed in Table 2-4. The
procedure for completing the communications link is
as follows:
a.
Connect the 6-foot cable between the
terminal and the COT DAA. See Table
2-4 for pin assignments.
b.
Switch terminal power on and press the
AUXI LlARY
MODEM/COUPLER
CON2.3.5
FIGURATION. The Models 743/745 Data Terminals
can be equipped with EIA interface capability and
auxiliary use of the coupler or modem by use of
either of two optional cables:
Set the LOW SPEED rocker switch to the
left position for 10 CPS or to the right
for 30 CPS.
d.
Set the 0 N II N E rocker switch to the
left position.
e.
On the telephone, dial the appropriate
number to connect the data terminal to
the data equipment.
f.
When an audible high frequency signal is
heard through the receiver, lift the white
data button on the telephone cradle and
place the handset on the table beside the
dial unit.
I
•
EIA/Auxiliary modem cable (TI Part No .
983855-0001) for the Model 743.
NOTE
The Model 745 with the EIA/Auxiliary
Coupler option installed is shipped with
no internal connection between the
acoustic coupler and the keyboard/
printer. The jumper connector (TI Part
No. 983846) furnished with the EIA/
Auxiliary Coupler option must be inserted into the communications interface
connector at the rear of the terminal to
permit use of the Model 745 in its
standard configuration.
Table 2-4. Optional Internal Modem
Interface Cable Pin Assignments
(Cable Part No. 983849)
I
EIA/Auxiliary coupler cable (TI Part No.
983847-0001) for the Model 745.
2.3.5.1 EIA/Auxiliary Coupler, Model 745. In this
application the coupler is used to communicate with
an external device and, therefore, is used separately
from terminal operation. Figure 2-3 diagrams this
mode of operation, and pin assignments are listed in
Table 2-5. The link may be completed through use of
the following procedure.
RETURN key.
c.
•
a.
Connect P1 of the 6-foot cable to the
communication interface connector at
the rear of the Model 745.
b.
Connect P2 to P3 at the opposite end of
the 6-foot cable.
c.
Test terminal operation as though it were
a standard Model 745; follow the procedure outlined in Section 2-3.1 above. If
this link tests satisfactorily, continue the
procedure.
d.
Unplug P2 from P3 and plug
external device for auxiliary
acoustic coupler. Complete
munications link as described
2-3.1 above.
----------~---------.----------~
Pl Connector
to Model 743
Pl-5
Pl-4
Pl-13]
Pl-3
Pl-12]
Pl-8
Pl-ll]
Pl-2
Connector to
DAA
lug Ired wire)
lug (black wire)
Function
Data TIp (OT)
Data Ring (OR)
Transmit Jumper
Receive Jumper
Carrier Detect
{ Jumper
2-5
P3 into an
use of the
the comin Section
External Device:
Plotter, Recorder, etc
External Controller.
~.--=-----L_-4 Computer, another terminal, etc.
NOTE
The Model 745 with the EIA/Auxiliary
Coupler option installed is shipped with
no internal connection between the
acoustic coupler and the keyboard/
printer. The jumper connector (TI Part
No. 983846) furnished with the EIA/
Auxiliary Coupler option must be inserted into the communications interface
connector at the rear of the terminal to
permit use of the Model 745 in its
standard configuration.
KEYBOARD
AOOOI074
Figure 2-3. EIA/Auxiliary Coupler Connections for the Model 745
Table 2-5. EIA/Auxiliary Acoustic Coupler Cable Pin Assignments Model 745
(TI Part No. 983847)
Terminal
Connector
(P1)
I
Pl-9
Pl-13
Pl-12
Pl-l0
Pl-l
P1-1l
Pl-15
Pl-8
Pl-3
Pl-l
Pl-2
Pl-9
Pl-6
Pl-7
I
Cable
Termination
(P2 and P3)
P2-l
P2-2
P2-3
P2-4
P2-7
P2-8
P2-20
P3-3
P3-2
P3-7
P3-8
P3-l
P3-5
P3-6
2!
I
Function
rprotectlve Ground
Transmit Data'
Receive Data'
-c ...
~.::~ +12 Volts to RTS',4
~Q)W
Data Carrier Detect"S
~
>?ata Term I n~1 Ready','
(jj
Receive Dataa. uQ)
Transmit Data O
:l III
o ~
Signal Ground o
U (jj
.~ E ... Carrier Detect'
Protective Ground
~~
o Clear to Send 2 ,.
u W
Data Set Ready2,.l
2-6
e.
Check your external device for satisfactory operation before continuing.
c.
f.
Connect P2 to an external controller.
Check the Model 745 keyboard and
printer for normal operation.
Grasp a new paper supply roll so that the
loose end of the paper faces you with the
end pointing up.
d.
Place the paper supply roll on the paper
roll supports; check that the roll can
rotate freely.
e.
G rasp both corners of the end of the
paper and gently pull up about 6 inches
of paper.
f.
Feed the paper over the dancing roller
and down the paper chute until it can be
seen behind the window. The paper will
2.3.5.2 EIA/Auxiliary Modem, Model 743. In this
application the modem is used with an external
device rather than normal terminal functions. Figure
2-4 diagrams this mode of operation. Pin assignments
are listed in Table 2-6. The communications link may
be completed using the following procedure.
a.
Connect Pl of the 6-foot cable to the
communication interface connector at
the rear of the Model 743.
b.
Connect the spade lugs to the COT DAA
(see Table 2-6).
c.
Connect P2 to P3 and test the Model 743
for normal operations as outlined in
Section 2.3.2 above.
d.
After the link has been completed,
remove P2 from P3 and connect P3 to an
external device.
e.
Test the external device for satisfactory
operation.
f.
Connect P2 to an external controller and
test the Model 743 printer and keyboard
for normal operation (see Section 2.3.2
above).
not slide under the printhead because the
printhead is pressed against the platen.
g.
Press the PAPE R ADVance key with your
right hand while simultaneously pushing
the paper gently down the paper chute
with your left hand. The paper will feed
under the printhead, then under the
window/pinch roller.
h.
Tear off excess paper by pulling forward
over the tearoff edge of the window and
close the paper door.
i.
After paper loading is complete, press the
RETURN key; or cycle power OFF and
ON (to initialize the electronics).
2.5 ADJUSTMENTS.
Only two field adjustments are possible in normal
use: printing image constr~st (darkness) and modem/
acou~tic coupler transmit level.
2.4 LOADING PAPER.
The following procedure describes how to load a
fresh supply of paper into the Models 743/745. See
Figures 2-1 and 2-5 for identification of components.
2.5.1 PRINT CONTRAST. The printing image contrast is preset at the factory and should not require
adjustment. However, if darker or lighter print is
desired, see Section 4.3.1 of this manual for the
procedure.
IMPORTANT NOTE
The warranty and/or service contract on
the thermal printhead is subject to nullification if the thermal printing paper used
in the Silent 700 Data Terminal does not
meet TI Specification 972603-0001.
a.
Switch terminal power on.
b.
Open the paper door and remove any
excess (old) paper or the empty core
from the paper receptacle.
2.5.2
ACOUSTIC COUPLER AND MODEM
ADJUSTMENTS. The acoustic coupler and modem
are factory calibrated for average operating conditions. However, since handset quality varies and
telephone and communications line losses occur, the
acoustic coupler and modem may require occasional
adjustment. See Section 4.3.2 for detailed pr~cedures
to adjust the acoustic coupler and modem transmit
levels.
2-7
CDT
Data Access
Arrangement
(DAA)
P1
~
~
I
I
I
I
1
~
MODEM
\ ;
I
I
I
r
'/
I
I
I
I
I
MODEL 743
PRINTER
I
II
1/----
I
I
I
I
l
I
I
I
I
~
-)
External Device:
I
Plotter, Recorder, etc.
P2
~
I
I
!
!
l
I
I
I
~
I
External Controller:
Computer, another terminal, atc.
I---
1\
KEYBOARD
~
i
!
P3
,--A--.,
1
AOOOI075
Figure 2-4. EIA/Auxiliary Modem Connections for the Model 743
Table 2-6. EIA/Auxiliary Modem Interface Cable Pin Assignments (Cable Part No. 983855)
P 1 Con nector
to Model 743
I
Cable
Termination
I
Function
743 Printer/Keyboard
Pl-9
Pl-13
Pl-12
Pl-l0
Pl-l
Pl-11
Pl-15
P2-1
P2-2
P2-3
P2-4
P2-7
P2-8
P2-20
Protective Ground l
Transmit Datal
Receive Datal
,
Request to Send ,4
Signal Ground '
Data Carner Detect',S
Data Terminal Readyl,3
Modem
Pl-9
Pl-8
Pl-3
P 1-1
Pl-2
Pl-6
Pl-7
Protective Ground 2
Receive Data 2
Transmit Data 2
Signal Ground 2
Carrier Detece
Clear to Send 4
Data Set Ready4
P3-1
P3-3
P3-2
P3-7
P3-8
P3-5
P3-6
ToDAA
Pl-5
Pl-4
lug (red wire)
lug (black wire)
Data Tip (DT)
Data Ring (DR)
2-8
NOTES
Relative to keyboard and printer (P2)
2 Relative to Internal modem (P3l.
Function of ON LINE switch
> +3 V when on-line
< -3 V when off-line
4> +3 when power IS ON.
5 Must be > +3 V to receive data.
I
ROLL
PINCH ROLLER
PRINTHEAD
DANCING ROLLER
PAPER ROLL SUPPORTS
(SIDE VIEW)
A0001076
Figure 2-5. Paper Loading Diagram (Not to Scale)
2-9
SECTION 3
THEORY OF OPERATION
3.1 FUNCTIONAL DESCRIPTION.
The following paragraphs in this Section describe the
theory of operation of the Models 743/745 Data
Terminals. Schematics referred to in the text may be
found in the appendix to this manual.
The Models 743/745 are low cost, light weight,
interactive data terminals which utilize the thermal
printing technique. A functional block diagram of the
Models 743/745 is shown in Figure 3-1. The terminals
operate in two modes, 0 N- LI N E or 0 F F- LI N E,
selecta ble by the operator.
•
ON-LINE Operation. With the terminal in
the ON LINE mode, the keyboard and
printer operate in conjunction with the
external interfaces as dictated by the
communications discipline and modified
by the specific interface options.
•
OFF-LINE Operation. With the terminal
in the OFF LINE mode, the terminal
operates in a "typewriter" mode; i.e., the
keyboard is connected to the printer and
no aata is transmitted or received. All
communications-related functions of the
keyboard are inoperable in this mode
(i.e., BREAK, HERE IS, etc.).
NOTE
The Models 743/745 Data Terminals are
supplied with one of two different paper
handling mechanisms and one of two
different electronics
printed wiring
boards (PWB). The similarities and differences in these subassemblies are explained
in the text where appropriate. Use the
following table to determine which mechanism and PWB your model has.
Terminal Serial No.
Mechanism
Part No.
Part No.
OX743YYYYY or
OX745YYYYY
983811
983841
OX744YYYYY or
OX746YYYYY
999257
937300
PWB
EIA
INTERFACE
COMMUNICATIONS
INTERFACE
CONNECTOR
....
I
I
II
------,
OPTIONAL
CHARACTER
SETS
I
I
r-
Ir-----'I
OPTIONAL
!.--..
ANSWER-BACK
MEMORY
~
(ABM)
I
I
IL______ .JI
POWER
PRINTER
DRIVE
L--
I ______ ..JI
L
II
MECHANISM
MECHANISM
ELECTRONICS
CONTROL
r----'J--·
...- ...
t
ELECTRONICS ....._____
T_AC_H_O_M_E_T_ER_S_EN_S_O_R_ _ _
PRINTHEAD
DRIVE
ELECTRONICS
KEYBOARD
SUPPLY
Figure 3-1. Models 743/745 Simplified Block Diagram
3-1
.-----.
I
PRINTHEAD
OPTIONAL
I
ACOUSTIC
I
I COUPLER
I
' II
I,MODEM, OR TTY
I _______
INTERFACE II
L
,
A0001077
3.2 CONTROL ELECTRONICS.
3.2.2 SPEED (BAUD RATE). The terminal transmission speed is determined by an operator selectable,
two-position rocker switch at 10 characters per
second (110 baud) or 30 characters per second (300
baud).
The control electronics function in the Models
743/745 is performed by an interrupt driven, stored
program, microprocessor system. The microprocessor
system consists of a Texas Instruments TMS 8080
microprocessor, two 1 Kx8 TMS 4700 ROM's, (one
4Kx8 TMS 4732 ROM in the later models), a 64x8
TMS 4036 RAM, and a special purpose TMS 5504
I/O device.
3.2.3 BUFFERING. A buffer is provided to store
characters received while a carriage return/line feed
(CR/LF) is in progress. The combination of print
time, CR time, and buffer is such that fill characters
are not required and no data is lost even for an
automatic CR/LF at column 81. This yields a true
3D-CPS printing capability (see paragraph 3.11.5 for
details).
The control electronics monitors all terminal inputs
and generates all necessary timing and control signals
to effect data transfers, cause printhead and paper
motion, and generate printable characters through the
thermal printhead matrix.
3.2.4 CHARACTER STRUCTURE. A character is
made up of a start bit (always ZERO or spacing),
seven data bits (least significant bit first), a parity bit,
and two stop bits at 110 baud (always ONE or
marking) or one stop bit at 300 baud (always ONE or
marking). Figure 3-2 illustrates the character serial
data timing. Tables 3-1 and 3-2 list the code structure
for the ASCII, APL, and Katakana codes as interpreted by the term inal.
3.2.1 COMMUNICATIONS DISCIPLINE. The con·
trol electronics monitors received data from the EIA
or the optional interfaces. It generates the appropriate timing and code structure to transmit data
entered through the keyboard. The control electronics transmits and receives asynchronous serial
data in accord with ANSI Standard for Character
Structure and Parity Sense X3. 16-1966 and ANSI
Standard for Bit Sequence X3.15-1967.
RKING
MA
U.---l---l---l---l---l---l---l----]
I
I
I
I
I
I
I
I
•___ .lI ___ .JI ___ .JI ___ .J•
•
___
.J ___ .lI ___ .J•__ _
SPACING
BIT TIME
~
9.09
msec
START
BIT
-
DATA BITS
A
r
B1
B2
B3
B4
,
B5
B6
(LSB)
B7
(MSB)
PARITY
BIT
STOP
BIT
STOP
BIT
~~----------------------CHARACTERTIME------------------------__~
100 msEl(.
a. 110 baud, 10 CPS Speed
BIT TIME
~
3.33
msec
START
BIT
~
DATA BITS
,
A
r
B1
B2
B3
B4
B5
B6
(LSB)
B7
(MSB)
PARITY
BIT
STOP
BIT
CHARACTER TIME
~1--------------------33.3
msec (300 baud) ----------------~
50 msec (200 baud)
*for 300 baud; 5.0
msec for 200 baud.
b. 300 baud, 30 CPS Speed
Figure 3-2. Serial Data Timing Diagram
3-2
AOOOI078
Table 3-1. APL and ASCII Code System and Character Sets
CONTROL
FOR BOTH
APL AND ASCII
U. S. ASCII MODE
APL MODE*
~~------------A-------------~v~------------~------------~
0
b7
,b 4
1\
b,
'2
0 0
o
1
1
o
0
4
1
0
P
~~
QP
A
Q
1 1 1
7
fBEL
100 0
8
IBSl
0
0
1
0
1
1
1
0
0
1
1
1
0
1
0
1
1
1
P
ISV1\(;t:
10
1 11
o
$
4
D
T
*
J.~~
1 13
+
,
.
1:-
14 ~-::.$Q':: :::
1 1 1 1 15
7
G
8
H
k:.sl::: US
:
,
W
(i<
ex
?
a
q
•
4
L
-
d
t
)c
)(
~
":
-"
,)<'' ,,:>-
u
)'1<;
-
r;
J
Z
> 'f"
K
[
x
y",><
]
a
;
><
5<
x x
-
t
i
y
0
C
j
z
--+
m
}
9
=1=
(
w
,
,
+
.x)c
1
1\
~
~ ~J~
m»< ~}~
\
-
g
V
.~
.Y~
"-
w
7
]
.. ~,«
<
')<
y
)
.F.t:=. I::
1
)
)
/
(
ICRlt:·
.~
~e~
~.)(
:-:
12
1 1 1 0
>c
:)<
[:.
ILFI
:::
:::
><9
,>< ')
:-:HT
100 1
1 1 0 0
.
'il-
[.
AC
1 0
!
[.
6
1 1
0
1
[:
1 1 0
101
:.I?~
DC
.~9,t:I,
STX
0
1
1 0
1
1
1
0
ISPACE
1
o
o
1
~
0
1
1
1
1
1
1
0
0
1
0
I[
0 0
o
0
0
0
0
o
0
0
bl>
W~;0
.
b :L
/
X
I
DEL
\
• APL characters are available only with the optional APL/ASCII keyboard.
D
Pnntable characters
Translated to uppercase equivalents by standard
keyboard, or when UPPE R CASE ON LY is
selected on the optional Full-ASCII keyboard.
_
Printer control characters
Codes generated and transm itted by
the terminal, but no action is taken.
On standard (limited-ASCII) keyboard only:
printed when received but not generated.
AOO01400
ASCII CONTROL CHARACTERS
(From USA Standards Institute Publication X3.4-1968)
ACK
BEL
BS
CAN
CR
DCl
DC2
DC3
DC4
tDEL
DLE
acknowledge
bell
backspace
cancel
carnage retu rn
device control 1
device control 2
device control 3
device control 4 (stop)
delete (also called RUBOUT)
data link escape
EM
ENG
EaT
ESC
ETB
ETX
FF
FS
GS
HT
LF
end of medium
enquiry
end of transmission
escape
end of transmission block
end of text
form feed
file separator
group separator
horizontal tabulation
line feed
tnot strictly a control character
3-3
NAK
NUL
RS
SI
SO
SOH
STX
SUB
SYN
US
VT
negative acknowledge
null
record separator
shift in
shift out
start of heading
start of text
substitute
synchronous idle
unit separator
vertical tabulation
Table 3-2. Katakana and ASCII Code System and Character Set
CONTROL
FOR BOTH
KANA & ASCII
KATAKANA MODE*
U.S. ASCII MODE
r---~--~v~--------------~----------~v~------------~~------------~
0
0
0
b7
bs
0
0
1
1
0
1
0
0
0
1
0
5
6
7
2
@
p
~»
p
SPACE
A
a-
0
0
1
0
1
2
3
4
SPACE
0
1
1
1
1
1
1
0
0
b6
1
0
1
0
1
1
3
b 4 b 3 b2 b l
No.
0 0 0 0
0
~~U1: )?L_~::
0 0 1
1
:_~O.tf j~~(
!
1
A
Q
1 0
0 0 1 1
2
3
~ ~I}( ~
:))¢:t
"
B
R
>Jl
><.F!:
I
~p.~~::~
C
S
>'C
>CS
J
0 1 0 0
4
J=I).{.:
~ ~Q.t~ ~9~.~.:~
#
2
3
$
4
D
T
%
5
E
&
6
F
7
G
W
G'
'w
7
A
I
0
0 0
r
M
Q
~TM
U
E
>u
V
F
>V
,
.
0 1 1 1
7
~~~.q~ :~~.~.:
~f.~.: ~~.Y.~. ~
BEL :.~:nf
1 0 0 0
8
IBS I :CAN:
(
8
H
X
:>Z
.:L
;
K
[
>cKy ~{?
0 1 0 1
5
0 1 1 0
6
1 0 0 1
/
-
1 0 1 0 10 ILFI :.~~~~:
1 0 1 1 11
:::VT:::::~.~G.:~
1 1 0 0 12
:::FF ::::::'FS::::
1 1 0 1 13
CR
:::GS::::
1 1 1 0 14
so
:::RS:;:
1 1 1 1 15
rnn
:::US:::
,
.
/
<
L
¥VEN
M
>L.:
;;f
~.~~
:;;'-.1:;;'-
.y
.::L
M
]
M ~}~
>
N
/\
.~
?
0
-
~ :.P~L .
%:~~
"3
1
0
1
0
0
,
1
4
i
A
1
?
U
r
.::r..
E
~
0
-t
I
*11
KA
~
1
1
5
TA
7- CHI
~
MU
'J TSU
TE
.:f:
MO
TO
-y VA
NA .:::L VU
VO
KI .5( NU
7
RA
KU
9
RI
NI
U
7
'T
E
::2 KO / \ HA
0
-+j
SA
1:.
HI
ORO
VA
~
SHI
7
FU
9
KE
/
NE
NO )V RU
VU
A su
" " HE
vo
~ SE
~
'J TSU
1
SO 7
7
ME
3
*
6
MI
A
j
-
0
1
1
1
HO
MA
V'RE
WA
~
"
0
N
~:DEL:
.........
* Katakana characters available only with the optional Katakana keyboard.
D
Printable characters
Translated to uppercase equivalents when received
by the terminal equipped with Katakana keyboard.
_
Printer control characters
Printed when received, but not generated
IiII
Codes generated and transmitted by
the terminal, but no action taken.
Ignored codes
AOOO1202
ASCII CONTROL CHARACTERS
(F rom USA Standards Institute Publ ication X3.4-l968)
ACK
BEL
BS
CAN
CR
OCl
OC2
OC3
OC4
tOEL
OLE
acknowledge
bell
backspace
cancel
carnage retu rn
device control 1
device control 2
device control 3
device control 4 (stop)
delete (also called RUBOUT)
data link escape
EM
ENQ
EOT
ESC
ETB
end of medium
enquiry
end of transmission
escape
end of transmission block
ETX
FF
FS
GS
HT
LF
end of text
form feed
file separator
group separator
horizontal tabulation
line feed
tnot strictly a control character
3-4
NAK
NUL
RS
SI
SO
SOH
STX
SUB
SYN
US
VT
negative acknowledge
null
record separator
shift in
shift out
start of heading
start of text
substitute
synchronous idle
unit separator
vertical tabulation
•
3.2.9 MECHANISM CONTROl. The control electronics also generates control signals for horizontal
positioning of the printhead as well as vertical
positioning of the printing paper.
The standard Models 743/745 utilize a limited-ASCII
character set. On the standard limited-ASCII keyboard, lowercase alphabet characters are not generated and are translated to their uppercase equivalents
when received. Full-ASCII (lowercase capability),
Katakana, and APL keyboards are available as options.
3.2.9.1 Horizontal Printhead Positioning. The control
electronics positions the printhead horizontally
through the three-phase, 15-degree stepping motor.
The motor is coupled mechanically to the printhead.
The control electronics monitors an optical sensor
mounted on the motor shaft which provides feedback
to control both stepping motion during printing and
slew motion during carriage return. The print/step
cycle operates asynchronously up to 35 CPS during
the period required to empty the data buffer.
3.2.5 PARITY. The parity of received data is ignored
by the printer. The parity of the transmitted character is factory-strappable between odd, even, or
continous mark. Parity is not operator-selectable but
is set at the factory according to the original purchase
order. Even parity is supplied if not otherwise
specified.
3.2.6 DUPLEX OPERATION. Duplex operation of
the communications circuit is operator-selectable to
either half- or full-duplex via the two-position HALF
DUP switch on the keyboard. In full-duplex operation the terminal is capable of transmitting and
receiving data simultaneously; any data typed on the
keyboard is transmitted but not printed. In this mode
it is possible to transmit data at the 30-CPS rate from
the keyboard while the printer is simultaneously
receiving data from the Iine at the 3D-CPS rate.
Carriage return time for a full 80 columns is typically
180 milliseconds. A backspace consumes one character time. An automatic carriage return/line feed
(CR/LF) is executed upon receipt from the keyboard
or line of the 81st character in a line. Fault detection
methods are used by the control electronics to
prevent damage during power cycling conditions,
obstruction of printhead motion, or loss of the
optical sensor signal.
3.2.9.2 Paper Advance. The control electronics advances the printing paper by timing the current levels
through the line feed stepping motor (or solenoid).
The motor (or solenoid) is mechanically coupled to a
ratchet mechanism which advances paper beneath the
printhead. A line feed is performed in one charactertime. By holding the PAPER ADVance key depressed, the operator can direct the control electronics to perform repeated Iine feeds.
In half-duplex operation the terminal is capable of
transmitting and receiving data, but not simultaneously. Any data typed on the keyboard is transmitted
and also printed. In the Model 745 any data received
from the line while the terminal is transmitting is
ignored and is not printed.
3.2.9.3 Printhead Pressure Control. The control electronics generates timed current levels through the
printhead pressure solenoid which is mechanically
coupled to the printhead pressure bar. Activating the
solenoid relieves pressure upon the paper during line
feed and carriage return operations; preserving line
and character registration accuracy and reducing wear
on the printhead.
3.2.7 ANSWE R-BACK MEMORY OPTION. The
Answer-Back Memory option is implemented by a
PROM inserted into a socket located on the printed
wiring board (PWB) inside the Model 743/745 (see
Section 3.10.8 for additional information).
3.2.8 KEYBOARD SCAN. The control electronics
generates control signals to scan the keyboard and
debounce keyswitch depressions. When a key
depression is detected during a scan, the character is
encoded and the appropriate action is taken by the
terminal. Each scan is complete so as to detect
possible multiple key depressions. When simultaneous
depressions are detected during a scan, neither key is
acted upon. This scanning/debounce technique
effects a two-key rollover with lockout.
3.2.9.4 Character Printing. Upon receipt of a character from the keyboard or the communications line,
the control electronics generates the appropriate
control signals to form the selected character utilizing
the five by seven dot matrix on the thermal printhead. The print voltage is enabled, and then the
matrix data is transferred to the printhead one
column at a time.
3-5
3.3 PRINTER MECHANISM.
3.3.4 PAPER LOADING. After an initial line feed of
at least 30 lines, paper will feed parallel between
adjacent lines of print to within 0.02 inches, and all
lines will be perpendicular to the paper edge within
0.05 inch.
The printer mechanism positions the printhead horizontally as each character is printed. The mechanism
also returns the printhead to column one and
advances the paper into position for the next line of
print. The last character printed as well as the
previous line are visible to the operator under normal
lighting conditions. A line constitutes up to 80
character positions (columns).
3.3.5 PAPER TEAROFF. The back edge of the paper
window is sharpened to provide means to tear off
printed paper. This method minimizes paper waste
and does not disturb the remaining paper supply.
The Models 743/745 employ either of two printer
mechanisms. Horizontal printhead positioning and
printhead pressure are implemented identically in
both versions. However, one version uses a solenoid
and ratchet arrangement to advance the paper (line
feed); the second version uses a four-phase stepping
motor for paper advance. The two types may be
Identified as follows:
Terminal
Serial No.
3.4 PRINTHEAD SYSTEM.
The printhead consists of a five by seven matrix of 35
heating elements and a transistor mounted on a
monol ithic chip. Mounted on a heatsink, the chip is
connected to the printhead interface PC card with a
flexible cable. Mounted on the printhead interface PC
card are two selected resistors (RTRIM and R3)
which control the characteristics of the temperature
compensation circuit so that its operation is optimum
Mechanism & Electronics
OX743YYYYYor
OX745YYYYY
Solenoid lIne feed mechanism
(Part No. 983811) with PWB
electronics (Part No. 983841)
- Schematic 983842
OX744YYYYYor
OX746YYYYY
Stepping motor line feed
mechanism (Part No. 999257)
with PWB electronics (Part
No. 937300) - Schematic 937298
for each individual printhead.
The printhead control electronics is identical for both
PWB versions (TI part numbers 937300 and 983841).
A block diagram of the printhead subsystem is shown
in Figure 3-4.
Each of the 35 heating elements on the printhead
consists of an SCR and a heating element. The 35
elements are controlled by the printhead driver
address lines diagrammed in Figure 3-5. When both X
and Y inputs are positive to a given element, the SCR
energizes and remains on (approximately 10 msec)
until PVOL TS is switched off.
Printer mechanisms are supplied either with a printhead integral to the assembly (part number 983833
with solenoid line feed or 999257-0002 with motor
line feed) or without a printhead (part number
983811 with solenoid line feed or 999257-0001
with motor line feed).
3.4.1 PRINTHEAD DRIVERS. The printhead drivers
are implemented on two SN98614 linear integrated
circuits, each of which consists of six driver circuits.
Each driver circuit has a low power, TTL, AND-input
stage and a totem pole, power transistor output stage.
All drivers are enabled by a signal called PHDSTRBE,
and each is controlled by an individual (address) line
from the processor.
3.3.1 CHARACTER SPACING. Characters are spaced
in 0.10D-inch increments (center to center) within a
tolerance of ±0.005 inch.
3.3.2 LINE SPACING. Line spacing is 0.167 ±0.005
inch center to center, producing six lines per inch
(single space).
Each driver
necessary to
The nominal
volts low and
3.3.3 PAPER SUPPLY. The mechanism accepts
laD-foot rolls of paper with a 1.93-inch maximum
outside diameter, wound with the heat-sensitive
surface outside. The paper width is 8.54· inches
maximum. The mechanism is designed to operate
only with paper meeting TI Thermal Paper Specification 972603 and the TI Thermal Paper Print Quality
Specifications 244156-9801, -9802, and -9803.
translates TTL data into the levels
control the printhead heating elements.
output levels of the drivers are -4.7
+3.5 volts high.
3.4.2 TEMPERATURE COMPENSATION CIRCUIT.
The printhead temperature compensation circuit
provides a regulated, temperature compensated voltage to the printhead. The voltage is programmed by
3-6
10 - 20% ENERGY TO PAPER
OPAMPV103
PRINTHEAD
12 ROW/COLUMN
TEMPERATURECOMPENSATI NG
ROW/COLUMN
DATA FROM
ADDRESS BUS
(AO-All) AND
PRINTHEAD
STROBE
TRANSISTOR
(DT)
(ON PRINTHEAD
INTERFACE PC CARD)
80 TO 90% ENERGY
TO HEATSINK
CERAMIC HEATSINK
A0001080
Figure 3-3. Model 7431745 Printing Subsystem Block Diagram
the selected resistors on the printhead interface PC
card and the voltage drop across the base-to-emitter
and collector junctions of the temperature compensation transistor on the monolithic printhead
chip.
When PRINT switches high and 0103 is off, the
0103 collector and CR 106 cathode are at -12 volts.
This switches 0102 off and prevents the voltage on
C114 from changing during a PRINT period.
Circuit gain is not changed when the CONTRAST
potentiometer R123 is adjusted. Gain is fixed at 70.
3.4.3 PRINT VOLTAGE CIRCUIT. Referring to
schematic 937298, sheet 7 or 983842, sheet 6 in the
appendix, Rl12 meters approximately 0.74mA of
current to RTRIM and DT (temperature-compensating transistor). RTRIM and DT are connected in
series with R110 to ground on the printhead assembly. RTRIM is selected during manufacture so that its
resistance compensates for variations in the voltage/
current characteristics of DT. Thus, the resulting
PVOL TS is correct for a particular printhead. The
resulting voltage at E 125 is nominally 0.964 volt.
R122 is selected during manufacturing unit test of
the PWB in order to calibrate the function of the
temperature compensation circuit. This calibration
enables use of any printhead with any PWB without
any adjustment or circuit change.
CR 1 07 provides a level shift of 12 volts which enables
amplifier Ul03 to output up to 22 volts and a
minimum of 2 volts.
When the PRINT signal is at logical ZERO from the
processor, 0103 is energized, applying +5 volts to the
cathode of CR 106 which holds it off and holds 0102
on. In the ON state 0102 has a maximum resistance
of 60 ohms. At a 1-volt level RTRIM and DT have
characteristic
impedances
of
approximately
1.0V/0.75mA = 1.3k ohms. Capacitor Cl14 charges
at a rate of (1.3k + O.06k) X 1 X 10- 6 second or
about a 1.4 msec time constant ±20% for variations in
C114 and the voltage changes, and resulting imped'ance changes, in RTRIM and DT. The maximum
charge time for Cl14 is 1.672 msec X 5 = 8.36 msec.
The holding time for C114 is greater than 0.1 second
with less than 1 percent drop.
CR 108 and CR 1 05 provide two functions:
3-7
(1)
Isolation of Q104 base from the gain loop
of the compensation circuit which enables PVOLTS to be switched on and off
without disturbing the circuit equilibrium
(2)
The two diode drops shift the base
potential of 0104 base position so that a
dc measurement of PVOLTS can be made
at the cathode of CR 107 without energizing PVOLTS.
__- - - PVOLTS
MATRIX
ADDRESS
__- - - GND
YD7
YD6
YD5
YD4
NOTE
C
E
YD3
This view shows the printhead
as it rests on the paper (from
heatsink side of printhead),
creating the letter "F".
YD2
YDl
XDl
___
~
XD2 _ _ _ _ _
~
XD3 _ _ _ _ _ _ _---'
XD4 _ _ _ _ _ _ _ _ _ _
~
XD5 - - - - - - -_ _ _ _ _- - l
A0001081
Printhead Matrix Address Lines
PVOLTS - - - - - - - - - - - - - -.....--------~ TO ALL ELEMENTS
90 ohms
(HEATER ELEMENT)'
TO OTHER SIX
ELEMENTS
55 ohms
XDll - -....-
........- - - - -
1.2 K ohms
YDll---.....-~~Ar----~--~-~
1.2 Kohms
(PRINTHEAD ELEMENT)
GND
----+---------------....- - - - - - -___ TO ALL ELEMENTS
~
____ TO OTHER FOUR
ELEMENTS
A0001082
Printhead Element Block Diagram
Figure 3-4. Printhead Matrix and Address Lines, and Printhead Element Block Diagram
3-8
3.5 MECHANISM DRIVE ELECTRONICS
0101 switches the base of 0104 to ground and holds
it there except when PVOLTS is to be turned on.
Diodes CR10l and CR102 provide base current to
0101 to keep it at ground whenever a break occurs in
the DT/RTRIM circuit which would cause excessive
PVOLTS.
The printer mechanism drive electmnics converts the
processor control signals into the appropriate closedloop, controlled dc currents. The dc currents are
applied to (1) a three-phase 15-degree printhead
stepping motor, (2) a printhead pressure solenoid,
and (3) to a four-phase stepping motor (on the
999257 mechanism) or to a solenoid (on the 983811
mechanism) for line feed.
As diagrammed in Figure 3-5, Cl13 and Rl08 control
the initial step of PVOLTS and the rate of change of
PVOL TS when 0104 is switched on by 0101 being
turned off. 0103 and Cl09 form a timing circuit
whose natural period is 10.5 to 15 msec. Normally,
this circuit is switched on at the leading edge and off
at the trailing edge of the 10-millisecond PRINT
control signal from the processor. But only in case of
a processor failure which allows PRINT to stay at a
logic ONE level would the PRINT time be controlled
by this circuit.
The two printer mechanism versions and their associated PWB electronics may be identified as follows:
Terminal
Serial No.
Mechanism & Electronics
OX743YYYYY or
OX745YYYYY
Solenoid line feed mechanism
983811 with PWB electronics
983841 - Schematic 983842
OX744YYYYYor
OX746YYYYY
Stepping motor line feed
mechanism 999257 with PWB
electronics 93730o-Schematic
937298
t
T-
fr
t
-+--i
~
-
t
I
-
+-1
~
1-1
t ,
t •
; ,,
;
1
t
i
f
AOOO1OB3
Figure 3-5.
Printhead Interface Timing (For Letter "F")
3-9
t
t-t
t t
.+, t- •
t
+
1-
~
; ~ t +-l- +
;
t
3.5.1 PRINTHEAD DRIVE MOTOR ELECTRONICS. The printhead positioning motor and electronics
is identical for both mechanism versions (schematic
937298, sheet 7 or 983842, sheet 6). The electronics
comprises four sections: phase-selecting circuits, a
current decay time-constant circuit, and a feedback
sensor circuit. A block diagram of the printhead drive
electronics is shown in Figure 3-6.
3.5.1.2 Current Regulator Circuit. Emitter current for
0205, 0206, and 0207 is controlled by the current
regulator circuit. This circuit is a switching regulator
type, synchronized to a 2D-kHz square wave signal
(PWRCLK) from U28-8. The 2D-kHz signal is integrated by C203, R223, and C209: the resulting
triangular signal is summed with the motor phase
current sample voltage from R233 and is applied to
pin 2 of U201. When the voltage at pin 3 of U201 is
more positive than at pin 2, emitter current for the
phase select circuits is switched on by U201 through
R212. When the voltage at pin 2 is more positive, the
emitter current is switched off.
3.5.1.1 Phase Selecting Circuits. Current in each of
the three printhead drive motor phases is selected and
controlled by three identical transistor networks:
Phase A - 0207, 0208, 0215
Phase 8 - 0206, 0204, 0202
Phase C - 0205,0201,0203
The reference voltage at pin 3 of U201 is set by the
processor to one of two levels, which consequently
regulates the motor phase current to one of two
levels. Hold current is regulated at 0.65 amps and step
current is regulated at 1.4 amps. When the STEP
signal from U26-5 is at a logic ZERO, the current
regulator circuit applies hold current to the motor
phase winding. When the STEP signal is at a logic
ON E, step current is applied. As the STEP signal goes
The operation of the circuits is discussed using only
one network, phase A, as an example. The TTL logic
level from U26-10 (PHA) selects current flowing in
phase A. When this signal is a logic ONE, base current
is supplied to 0207. Emitter current in 0207
energizes 0208, supplying sufficient base drive to
saturate 0215. Emitter current of 0215 is applied to
the phase A winding.
FEEDBACK
SENSOR
-------------------------1
SENSOR - ..
CIRCUIT
IA
PHASE A
PHASE
PHASE 8
18
SELECTING
TO/FROM
PROCESSOR
PHASE C
-
CIRCUIT
IC
7
i
I
PRINTHEAD
DRIVE
MOTOR
........
I
CURRENT
DECAY
TIME
CONSTANT
CIRCUIT
CURRENT
STEP
IRETURN
REGULATOR
CIRCUIT
1
1
A0001084
Figure 3-6. Printhead Stepping Motor Drive Circuit Block Diagram
3-10
from a logic ZERO to logic ONE, the current
regulator circuit ramps the motor current up to 1.4
amps by charging C204 through R222 and R234 to
prevent sudden changes in motor torque and to
reduce audible noise in printhead movement.
When the processor requires quick discharge of the
phase current, it sets a logic ON E at the U26 pin 2,
FAST signal. This energizes Q212 and 0213 which
removes base current from 0214 and 0209. This
enables VCE0209 to go to -22 volts, providing a
0.75 amps-per-msec discharge rate for motor winding
inductance.
3.5.1.3 Current Decay Circuit. When the current
regulator senses sufficient current in the printhead
stepping motor and switches off the current through
0215, the emitter of 0215 is suddenly switched from
+30 volts to a negative voltage by the inductive
flyback of the motor winding. The value of this
negative voltage determines the time necessary to
discharge the current in that winding. An approximation of this time may be computed using LI/V = t
where
L = winding inductance
I = motor current
V = voltage from winding to ground
t = time of current decay.
3.5.1.4 Feedback Sensor Circuit. The processor requires data on the position of the printhead stepping
motor in order to "know" when to apply braking, to
change phases, or to make other decisions concerning
motion of the printhead carriage. This data is
provided by the feedback sensor. Figure 3-7 diagrams
the output characteristics of the feedback sensor
circuit.
Primary operation of the feedback sensor is accomplished by a 24-position slotted wheel which interrupts a light path between an I R emitting diode and a
photosensitive transitor. This assembly is mounted on
the stepping motor which drives the printhead carriage. The circuit is shown in Figure 3-8 The current
from the phototransistor is translated into a TTL
logic level signal by the 02 and 03 circuit shown in
Figure 3-9.
During periods when motor current needs to remain
constant, transistors 0214 and 0209 are energized
with base current via CR202 and R229. The flyback
voltage during these periods is limited to:
VCR207 (-1 V) + VCE0209 (-1 V)
or approximately -2 volts. This provides a very long
discharge time and enhances regulator efficiency.
r
I
1
1
-t- -Tr-t
1---1---1--
+t-
-+-+-+-+-+-+-+-'
-+-tt,
+-t-++- +
+-+-+I!
l-+--+--+-+-+-+-+--I!-t-\-+
-
H - --
-f-f-T
-+-H
i+r-,_-L~--+
t-t---+-+-' -:---t=+- -o:=:=,~rI o~LL
!
i
'++++ +-+-+-t--l-I-.-H- ~4 ~-++ -;-~ , r-t--
6
+-+-+ -1-+ -+--LLi--j-
I I I
--+-1
or----r-
I
f-H---f--i--"
i
,-
+-
II
-- t--H-
+-1--+--+-+-+-+-+--+~--+--+-1
1y-r-H- r---,-- - -
,+-
j-I--'
o'E
t
oO=+-_+~1+2
-H- -t-
+
if
L
ltf'~1
oT+0
, +6
I J :+8
-+-
t--+- 1---1---
f-+-
1
0
+4
-r-
i
:
,i--e--e-- -t--
a1=+-1
I
I
+-
-1---1---1---
-1--+-1---
0'--1---
+10,
-i--
I-I---ti +-1
o-I---H-+--+--+-++12 _I--- _+-+-+--+-+-+-_~
I-T+-I_+_+-+---+-+-+-+--I-+-+-+-+-_+-+-+-l-l
-l-~_+-+I1-I-.........-+-+-4-+-+-I-+--+-f-+'-+1. . . .+ MOTION RIGHT +-11-1-+-',+-+-+-+-1-+-+-1--+-+--+-+1--+-+-+-+--+-1
L,EF
r~ - -+--t- ' t ' f!--t-_
,
I,
1
I
i
.=1-++-+-"
I
ii'
-t t l ,
+ -+-+-+--i -+-~-+--+-+-+-1-+--+-+-+'
'+-+-+-+-+--+-+--+----I--I---l-+--H-+--+-+---+-+--1-++1t"
f-f-f-'
As the slotted wheel opens the light path, current
flows through the phototransistor, energizing 02
'i
+ +-t
'
'.
t
I
1
j'
-t-+-1+-~~Ti~i+-H-+,
'
+-+-j' -I-!
+,--+-
r
+--+-rl- f--+-
+-+-+-+-1-++-+--+-+-+--+-++-1'-++-1
--;--r-r-
i:::
I ,
++-+-t
+
i +--1-++--1-++--1,-++--1--1
AOO01085
Figure 3-7.
Printhead Stepping Motor Drive Circuit Feedback Sensor Output Characteristics
3-11
LIGHT PATH BROKEN BY A 24-POSITION SLOTTED WHEEL
I
SENSOR ASSEMBLY
82 OHMS
---4-+--_-~-
,- - ---P1
----_
'---_ _4__+<
SENS-I
I
I
I
I
I
3 ,
~---------------------+----------------------------+C
:
GND
I
I
1
I
I
~---------------------------.----------------------------~
+5V
I
!... ____
I
A0001086
Figure 3-8. Printhead Stepping Motor Feedback Sensor Light Path Schematic
+5V
PWB ASSEMBLY
,--I
J1
+n5V~
______________________________~a-__________
I
I
I
R12
10K
lK
I
I
I
39K
I
TO FEEDBACKI
SENS-I
4
~----------~--~,~~--~--------~
SENSOR . . . . ,
03
10K
AST2222
(2)
I
I
~_G~
20K
-5
AOO01087
Figure 3-9. Printhead Stepping Motor Feedback Sensor Q2, Q3 Circuit Schematic
3-12
which deenergizes 03. Resistor R15 adds hysteresis
to the circuit to provide regenerative feedback during
transitions; this eliminates false triggering of the
sensor.
a.
Printhead Lift Without Line Feed. The
printhead lift function i$ performeq when
the base drive resistor R 253 for 0251 and
the base drive resistor R 255 for 0252 are
switched to a logic ONE level. This turns
on 0251 and 0252, causing current flow
from +30 through fuse F252 and the
printhead lift solenoid and parallel resistor R 258 through both sets of motor
windings through 0251 and 0252 to the
30 V supply return. The transistors inductively clamp the stored inductive energy
turn-off.
The
printhead-liftupon
without-line-feed function is subject to a
maximum 20 percent duty cycle, based
on a maximum on-time of 45 seconds.
b.
Printhead Lift With Line Feed. The processor performs a printhead-lift-with-linefeed by switching the base drive resistors
R253 for 0251 and the base drive resistor
R255 for 0252 to a logic ONE level in
the following sequence:
3.5.2 PRINTHEAD PRESSURE AND LINE FEED
CIRCUITS. The paper handling mechanism in the
Models 743/745 uses one of two types of line feed
drives. One version of the mechanism (TI Part No.
983811) incorporates two solenoids, one for paper
line feed and one for printhead lift. The other version
of the mechanism (TI Part No. 999257) has a
solenoid-actuated printhead lift and a motor-driven
paper advance (line feed). The following discussion
distinguishes between the two types of mechanisms,
first describing the two-solenoid mechanism and then
the motor/solenoid arrangement.
Refer to schematic 983842, sheet 6 for the solenoid/
solenoid mechanis~; and to schematic 937298, sheet
7 for the motor/solenoid drive.
3.5.2.1 Solenoid/Solenoid Drive (983811). Both solenoid drivers basically are transistor voltage switches
which provide a means for the processor to energize
the two solenoids (one for printhead pressure and one
for line feed). The transistors are NPN Darlington
devices with a minimum current gain of 1000. Base
current is provided when the processor sets U25, pin
15 for line feed and U25, pin 5 for printhead lift to a
logic ONE. The collector of 0251 saturates +1.5 volts
(maximum) sinking current for the line feed solenoid.
When the processor resets U25, pin 15 to a logic
ZERO, 0251 goes off; simultaneously, the inductive
flyback of the solenoid current drives the collector of
0251 to a peak of approximately +65 volts. During
the flyback, current flows through CR251 and R257,
discharging the inductive current from the solenoid.
Step No.
1A
18
2A
28
3A
38
4A
48
Transistor
ON
Phase
(degrees)
0251
0251
0252
0252
0251
0251
0252
0252
7.5
15.0
22.5
30.0
37.5
45.0
52.5,
60.01
Motor Phase
Time
ON
(msec)
2
3
4
2
3
4
0-3
3-6
6-9
9-12
12-15
15-18
18-21
21-24
Motor-phase 1 is energi zed by the charging of capacitor C213 from +30 V
through the motor winding, and returns
through 0251. Motor-phase 2 is dccoupled and is energized when 0251 is
turned on. Motor-phase 3 is energized by
the charging of capacitor C212 from
+30 V through the motor winding and
returns through Q252. Motor-phase 4 is
dc-coupled and is energized when 0252 is
turned on. Diodes CR251 and CR252
provide reverse-voltage protection for
capacitors C213 and C212. Printheadlift-with-line-feed is subject to a maximum duty cycle of 40 percent, based on
a maximum continuous line feed of 330
seconds.
The printhead lift circuit is similar to the line feed
except that the +30 volts is applied to the junction of
R258 and CR252. This limits the current in the
printhead pressure solenoid to a maximum 0.9 amps
and limits the voltage stress on 0252 to about +31
volts.
3.5.2.2 Motor/Solenoid Drive (999257). The drivers
are saturated transistor voltage switches controlled
from the processor buffer for energizing the LF-step
B-printhead lift solenoid and/or the LF-step A-line
feed stepping motor. The transistors are NPN Darlington devices with a minimum current gain of 1000
specified for inductive switching applications.
3-13
3.6 KEYBOARDS
speed. (This key is not provided on the
APL keyboard, which has an automatic
repeat feature.)
The standard keyboard for the Models 743 and 745 is
a limited-ASCII (uppercase alphabet characters only)
version with an integral numeric keypad for fast
number entry.
e.
An optional, full-ASCII keyboard is capable of
generating/printing both lowercase and uppercase
alphabet characters. Table 3-1 shows the code structure of the ASCII code as interpreted by the standard
and full-ASCII keyboards.
LOW SPEED - The LOW SPEED control
is a two-position rocker switch which sets
the transmission rate to 10 characters per
second (CPS) when pressed to the left or
30 CPS when pressed to the right.
f.
HALF DUPlex - The HALF DUP control
is a two-position rocker switch which sets
the communication status to half duplex
when pressed to the left or full duplex
when pressed to the right.
g.
ON LINE - The ON LINE control is a
two-position rocker switch which sets the
terminal to on-line status when pressed to
the left or local status (off line) when
pressed to the right.
An optional APL/ASCII keyboard generates/prints
the special programming characters shown in Table
3-1 in addition to the full-ASCII character set.
An optional Katakana keyboard generates/prints the
Katakana characters and limited-ASCII characters
shown in Table 3-2.
All keyboards are TTY33-compatible, alphanumeric
devices equipped with a carrier detect lamp which
indicates that the data carrier is being received (or
that the carrier detect signal is biased ON).
3.6.1 STANDARD KEYBOARD. The standard keyboard is equipped with 54 single action keys, four
two-position rocker switches, and one carrier detect
indicator lamp. The integral numeric keypad is
activated by pressing the NUM rocker switch to the
left; then only the "shadow box" keys are enabled.
The dot pattern structure of the various character sets
is illustrated in Figures 3-10 and 3-11.
The following special-function keys are provided on
all keyboard versions:
a.
b.
c.
d.
Standard keyboard layout and symbolization are
shown in Figure 3-12. The output status when the
CTR L (control), NUM (numeric), and SH 1FT controls are not activated is shown in Figure 3-13.
Figures 3-14, 3-15, and 3-16 illustrate, respectively,
the output status of the various keys when the
SHIFT, CTRL, and NUM controls are activated.
PAPER ADVance - When held depressed, the PAPER ADV key causes the
printer to perform a carriage return (CR),
and continuous line feeds (LF) after
returning the printhead to column one;
no code is transmitted. A 200-millisecond
pause follows the first line feed before
continuous line feeds are performed.
NOTE
Some models of the standard keyboard
are equipped with alternate-action lOW
SPEED, HALF DUP, ON LINE, and
NUM keys instead of rocker switches.
BREAK - The BREAK key, when
depressed, causes the terminal to transmit
a continuous space as long as the key is
depressed and the terminal is on-line.
3.6.2 OPTIONAL FULL-ASCII KEYBOARD. The
optional full-ASCII keyboard is equipped with 59
single-action keys, four two-position rocker switches,
and one carrier detect indicator lamp.
HERE IS - The HERE IS key, when
depressed, causes the optional answerback memory contents (if installed) to be
transmitted if the terminal is ON-LINE.
Full-ASCII keyboard layout and symbolization are
shown in Figure 3-17. The output status when the
CTR L (control) and SH I FT keys are not depressed is
shown in Figure 3-18. Figures 3-19 and 3-20 depict,
respectively, the keyboard output when the SHtFT
and CTRl keys are activated.
REPT - The REPT key, when held
depressed in addition to a character key,
causes the terminal to repeatedly generate
the character at the terminal operating
3-14
\,,
U. S. ASCII MODE
,
b,
II
b6
~
II
b3 b2 b l
2
3
mm
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
001
1
1
1
0
0
1
011
1
1
1
1
1
1
NOTE:
1
0
1
0
1
0
1
000
0
0
101
1
0
0
1
1
0
1
100
101
1
1
1
1
0
1
SPACE
t±±l±l
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
0
0
0
001
o
1
1
1
1
bs ----"
000
o
0
0
1
000
o
A
1
\\0
1
0
1
0
4
5
6
7
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I]
I
11
•III
II
I
Ii
I
I
I
I
I
I
APL MODE
1
I
I
I
I
I
I
I
0
1
0
1
1
"
1
1
0
0
0
1
0
1
2
3
4
5
6
7
I
I
I
I
I
I
I
I
I
I
BLANK
DIERESIS
LESS THAN
LESS OR EQUAL
!'QUAL
GREATER THAN
OR
AND
DIVIDE
I I
(I I
I I
I
I
Ii
I
I
I
I
I
I
I
I
I
I
III
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I I
I I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
0
NEG SIGN
STAR
DIAMOND
1
ALPHA
QUERY
A
DECODE
RHO
2
R PARENTH
RT BRACKET
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
3
INTERSECTION
CEILING
4
FLOOR
LOGIC NOT
5
EPSILON
DROP
6
UNDERSCORE
UNION
7
8
9
NOT EQUAL LFT PARENTH
LFT BRACKET
DEL
OMEGA
DELTA
REV IMPLICATION
IOTA
TAKE
NUL
IMPLICATION
QUOTE
LFT_ ARROW
QUAD
LFT TACK
RT. ARROW
COMMA
SEMI-COLON
PLUS
TIMES
MODULUS
COLON
ENCODE GREATER OR EQUAL
PERIOD
~
DELETE
SLASH
BACK SLASH
CIRCLE
MINUS
Lowercase characters are translated and printed as uppercase characters by the standard limited-ASCII keyboard.
AOOO1393
Figure 3-10. APL and ASCII Character Set Generation
3-15
1
1
1
1
.-.
I I
t±±l±l
,
B
C
D
E
F
G
H
I
J
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
P
Q
R
S
T
U
V
W
X
Y
Z
K
LFT BRACE
L
RT TACK
M
RT BRACE
N
0
ooLLAR SIGN
~
DELETE
t:tl±tJ
u.s.
ASCII MODE
(
b~
..
bh
Bits
0
0
1
0
..
b, -
KATAKANA MODE
1
0
1
1
- - - - - J .- - - - - - .
1
0
0
I
'r___
J.
1
1
1
0
1
1
1
0
0
1
0
1
1
1
0
0
1
0
1
I I I I I I ; I ITA IMI
o
I III I I I I I It ILIMU
1 I I I I I I I I, ITSUIME
I I I I I I I Iu ITE IMO
o
I I I I I I I IE ITO IVA
o
I I I I I I I 10 ilL Ivu
o
I I I I I I I ilL INI Iva
o 111 I
I I II I II IA IKI It IRA
I I III I III I I, IKU IJIt.
I I I ., I ., Iu IL INa IRU
I I I I I I IE IKo IHA It
1 11 I I I I I I] 10 ISA IHI IRa
I I] I IVENI I IVA It,IFU IWA
11 1 I I II I II I Ivu Isu It IN
111 I I II I II I Iva ISE IL 19
11111111111TSUIsoiMAI
o
0 0 0
0 0 1
o
0
o
0 1 1
0
1 00
1 0 1
1 1 0
1 0 0 0
1 0 0 1
1 0 1 0
0
1 1 0 0
0
0
AOOO1203
-
Figure 3-11. Katakana and ASCII Character Set Generation
3-16
NUMED
0
SPACE
I
CARRIER• DETECT LINE
ON
INDICATOR
ED
A0001196
Figure 3-12. Standard Limited-ASCII Keyboard Layout and Symbolization
ED
SI"ACE
•
LINE
ON
ED
A0001197
Figure 3-13. Codes Generated with no Mode Keys Activated (Standard Keyboard)
El
B
[J[J~Dc:Jc:JDDDDLJCJ~
BDDDDDDDD[J~~.
DDDDDDD[]D~IE!lIl~rn
.DDDDDCJDODc]
ED
SI"ACE
A0001198
NOTES,
D
HALF
DUP
•
LINE
ON
A blank key indicates that a NUL code is ••ansmitted.
Figure 3-14. Codes Generated with the SHIFT Key Pressed and Held (Standard Keyboard)
3-17
ED
ED
t=I
I::J
B
LOW
SPEED
rn
HALFrn
DUP
rn
•
SI"ACE
AOOOl199
NOTE :
D
ON r n
LINE
A blank key indicates that a NU L code is transmitted.
The CTRL (Control) key overrides the SHIFT key.
Figure 3-15. Codes Generated with the CTR L Key Pressed and Held (Standard Keyboard)
DDDDDD~~~DDD~
DDDDDDD[]~EJD§]III
DDDDDDEJ[][]DDIl
NUMrn
A0001200
NOTE,
DDDDDD~[][JD
D
t=I
I.:::J
B
LOW
SPEED
rn
HALFrn
DUP
•
ON r n
LINE
A blank key indica.es that a NUL code i.....smitted.
The NUM (Numbers) switch overrides the SHIFT and CTRL keys.
Figure 3-16. Codes Generated with the NUM Switch Set (Standard Keyboard)
m~mmmrnrTlmrnr:::lfGslRrnr.;;lD
UJWWWW6L.ZJL§J9LQ.JL::...J~~L!J(ID
CJ1~~~~~~~[H!l~fDiElf!.ULlrnrnDIl
t:lJ
L9J (j!J W LBJ L!.J W U!J W l..Qj L.fJ ~ [ ] L:J
~~~~fBiLlm~~mrnrTl~~r,;;;]
W L.Q.J L.fJ L§J L.!:!..J W W W ; Li.J ~ l::J I.!:J
1I lAJ
~ r!J
•
rT"""t
UPPE R
CASE ~
rm ~ [AJ lID [MJ EJ LJ ~
HALF
SPAC E
DUP
LOW
SPE ED
r-r-1
L..J....J
rTI
L...Ii....I
~
LINE I..J..J
ON
•
(Carrier Detect Indicatorl
AOOOl192
Figure 3-17. Optional Full·ASCII Keyboard Layout and Symbolization
3-18
LOW r-r-1
SPEEOL-'-'
rr""'1
UPPER
CASE ~
HAlF,-..,.....,
OUP
SltAC E
L...J...J
ON
LINE
CD
•
(Carner Detect Indtcatorl
A0001193
NOTE: If UPPER CASE is not selected, a to z are printed in lowercase
If UPPER CASE is selected, A to Z are printed in UPPERCASE
Figure 3-18. Codes Generated with no Mode Keys Activated (Full-ASCII Keyboard)
rn
LOW
SPEEDL-'-'
CD
A0001194
HAlF,-..,.....,
DUP L..L...J
SltAC E
ON
LINE
NOTE: The SHIFT key overrides the UPPER CASE switch
-~
CD
•
Figure 3-19. Codes Generated with the SHIFT Key Pressed and Held (Full-ASCII Keyboard)
DDDDDDDDDDLJDD§8
ElEJEJLJEJEJLJEJLJLJLJCJDDEJIl
IILJEJLlEJLJLJLJLJLJDD~§§
EJElLJEJLJLJLJ[J[j[J
CD
rn
•
D
rn
LOW
SPEEDL.L.J
HALF
DUP
SPAC E
r"T"'"l
L...L...J
ON
LINE
AOOO1195
NOTE :
A blank key indicates that a NU L code is transmitted.
The CTRL (Control) key ov..ndes the SHIFT key and UPPER CASE Switch.
Fiwure 3-20. Codes Generated with the CTRL Key Pressed and Held (Full-ASCII Kevboard)
-3-19
NOTE
When the UPPER CASE rocker switch is
activated, only uppercase al phabet characters are generated/printed.
and one carrier detect indicator lamp. Table 3-1
shows the code structure of the ASCII and APL codes
as interpretd by the keyboard.
The APL rocker switch on the left front corner of the
3.6.3 OPTIONAL RECEIVE-ONLY CONTROL PANEL. The Models 743 and 745 Receive-Only Data
Terminals are equipped with a control panel in place
of a keyboard. The control panel shown in Figure
3-21 has PAPER ADVance and LOW SPEED controls
and a carrier detect indicator, all of which function
the same as on the keyboard models. Limited-ASCII
and full-ASCII versions are available, as well as
Answer-Back Memory (ABM). A programmable ROM
is used to implement the ABM.
keyboard permits selection of either the ASCII mode
or the APL mode. APL/ASCII keyboard layout and
symbolization are shown in Figure 3-22. With the
APL rocker switch depressed to the left (APL
position), the terminal operates in the APL mode.
The output status in the APL mode is shown in
Figure 3-23 with no mode key depressed and Figure
3-24 with the SHI FT key depressed.
With the APL rocker switch depressed to the right,
the term inal operates in the ASC II mode. The output
status in the ASCII mode is shown in Figure 3-25
with no mode keys depressed and Figure 3-26 with
the SH I FT key depressed.
3.6.4 OPTIONAL APL/ASCII KEYBOARD. The
optional APL/ ASCII keyboard is equipped with 59
single action keys, four two-position rocker switches,
PAPER
ADV
CD
LOW
SPEED
•
(CARRIER DETECT INDICATOR)
A0001272
Figure 3-21. Optional Receive - Only Control Panel (Replaces the Keyboard).
APL
l=f3
HALF
OUP
r-r-l
i:::::±:::l
. . ~APl SHIFTED CHARACTER
APl UNSHIFTED CHARACTER
!~ASCII SHIFTED CHARACTER
-~ASCII UNSHIFTED CHARACTER
80001392
•
(Carrier Detect Indicatod
KEYTOP LEGEND
i .. I\1
l?:E~
Figure 3-22. Optional APL Keyboard Layout and Symbolization
3-20
ON r--1'--1
LINE I:::::±::::]
•
A0001395
NOTE: Upperc:ase-only status is ignored in APL mode.
Figure 3-23. Codes Generated in the APL Mode with no Mode Keys Activated (APL Keyboard).
APL
I~----~--------
I=f1
HALF r-T'""l
DLF~
s~~1=f1
L?:~
•
A0001396
NOTE: Uppercase-only status is ignored in APL mode.
Figure 3-24. Codes Generated in the APL Mode with the SHIFT Key Pressed and Held (APL Keyboard).
I~----~--------
HA LF r-T'""l
DLF~
~~~
L':~
A0001397
NOTE:
If UppercasH)nly is enabled (CTRL, SHI FT, g A to Z are printed in
If uppen:ase-onIy is not ....bIed, A to Z are printed in
IJPI*C-.
I~
Figure 3-25. Codes Genented in the ASCII Mode with no Mode Keys Activ.... (APL Keyboa-d).
3-21
•
ON r-T""""\
LINE I:::::::!:::::J
•
AOO01398
Figure 3-26. Codes Generated in the ASCII Mode with the SHI FT Key Pressed and Held (APl Keyboard).
uppercase/lowercase mode may be selected by simultaneously depressing the
ICTR L I, I SH I FT I, and @] keys. Uppercase-only may be reselected by simultaneously
depressing
the
CTR L ( ,
ISHIFT/, and []J keys (or by cycling
power OFF-ON). The uppercase/lowercase selection is ignored in the APL mode
and is not affected by AP L/ASC II mode
changes.
Control codes, which are common to both the APL
and the ASCII modes, are shown in Figure 3-27.
The following special features are provided on the
APL/ASCII keyboard:
1.
I
Repeat - Automatic character repetition
is accomplished by holding a codegenerating key depressed for longer than
% second.
2.
Backspace - A backspace key is provided
to facilitate backspacing in the APL mode
for generating overprint characters. This
key is active in all modes.
3.
Uppercase/Lowercase
Uppercase/
lowercase capability is available only in
the ASCII mode. Following initial application of power, the terminal is automatically in the uppercase-only status. The
4.
APL Alphabetical and Underscore - In
the APL mode all alphabetical characters
(A through Z) are generated/printed in
lowercase with the dot patterns positioned in the upper portion of the 5 x 7
dot matrix. This makes possible true
underscoring of alphabetical characters
without overprinting.
A programmable ROM is used to implement the APL
option with or without ABM.
ON r-T""""\
LINE I:::::::!:::::J
AOO01399
NOTE:
0 A blank key indicates that a NU L code is transmitted.
•
Figure 3-27. Codes Generated in APl or ASCII Mode with the CTRl Key Pressed and Held (APl Keyboard).
3-22
(2)
3.6.5 KATAKANA KEYBOARD. The optional
katakana keyboard shown in Figure 3-28 enables the terminal to transmit/receive both standard
U.S. ASCII characters and katakana characters.
Two special keys are provided: the KANA mode
key permits generating/printing the characters shown
in Figure 3-29 and 3-30. The ALPHA mode key
permits generating/printing the characters shown in
Figures 3-31 and 3-32. The control codes shown in
Figure 3-33 are generated when the CTR L key is
depressed.
(3)
(4)
The following actions occur when the keyboard is
set to the Kana or Alpha (ASCII) mode:
a.
b.
In the ALPHA MODE (Alpha mode indicator
ON) when ON LINE and in FULL DUPLEX:
(1)
Pressing the Alpha Mode key causes the
terminal to transmit the SI (shift in)
code.
(2) Pressing the Kana Mode key causes the
following:
Keyboard enters the Kana mode.
•
•
Terminal transmits the SO (shift
out) code.
(3) When the terminal receives SI (shift in)
from the line, the printer enters the
Alpha mode.
(4) When the terminal receives SO (shift out)
from the line, the printer enters the Kana
mode.
In the KANA MODE (Alpha mode indicator
OFF) when ON LINE and in FULL DUPLEX:
(1)
Pressing the Kana Mode key causes the
terminal to transmit the SO (shift out)
code.
Pressing the Alpha Mode key causes the
following:
•
Keyboard enters the Alpha mode
•
Terminal transmits the SI (shift
in) code.
When the terminal receives SO (shift out)
from the line, the printer enters the Kana
mode.
When the terminal receives SI (shift in)
from the line, the printer enters the
Alpha mode.
c.
In the on-line and half-duplex mode (the ON
LINE and HALF DUP switches to the left)
the ALPHA and KANA modes of both keyboard and pri nter can be changed from the
keyboard. The printer mode also can be changed by received data.
d.
I n the on-line. and full-duplex mode (the ON
LINE switch to the left and the HALF DUP
switch to the right) the ALPHA and KANA
mode keys affect only the keyboard mode.
The printer mode can be changed only by
the SI or SO codes in received data (from the
host computer). The keyboard and printer
modes are independent of each other; the
keyboard could be in the alpha mode while the
printer is in the Kana mode. The keyboard
alpha mode indicator lamp indicates only the
keyboard mode.
e.
Upon power-up or after pressing the RETURN
key to clear a paper-out or printeheacl jam
condition, both the keyboard and the printer
will be initialized to the ASCII alpha mode.
HALF
(SPACE)
r-I1'l
DUP ~
LOW
r-Il'l
SPEEDL....l...U
r-TI'l
ON
lINEL.l....dJ
~
L-CARRIER
DETECT
INDICATOR
KEYTOP LEGEND.
uS ASCII
,SHIFTED lOR
US
"
ASCII
CTRLI
~
/
~
/
NOTES
KANA
~:;HIF ~x ,SHIFTED
UN:':;~~E~ " "
AOO01201
1.
2.
Figure
The Alpha Mode Indicator is ON for the Keyboard Alpha Mode and OFF for Keyboard Kana Mode.
AlpM Mode (SI) and Kana Mode (SO) ch.-.cws cannot be ......... lIIiIII ... REPT key.
~28.
Optional Katakana KeybcNwd Layout and Symbolization
3-23
w[JGJGJGJGJGJGJGJGJGJDOrrlEl
ElwGJ[JCJGJ[JGJ[JGJGJDDE1E1~
o~GJ[JCJCJGJ[JGJDQ[JGJ[J[§]a
BGJGJGJ[J[JOGJGJCJGJGJ6@!)
I
~
~
I
(SPACE)
HALF
DUP
r-rI')
L...I...JJ
LOW r-rI')
SPEED\.....l..JJ
ON IT!)
L1NE~
Figure 3-29. Katakana Keyboard Codes Generated in the Unshifted Kana Mode
(Alpha Mode Indicator OFF)
AOO01204
DDD[3GD[3[3DDDDD~El
ElDDDDDDDDDDDDE1E1~
o~~: DDDDDDDDDDDDl§18
6[3DDDDDDDGDD6@!)
~
~
AOOO1207
I
I
(SPACE)
HALF
DUP
r-rI')
L...I...JJ
LOW [ [ ]
SPEED
ON IT!)
LINE ~
Figure 3-30. Katakana Keyboard Codes Generated in the Kana Mode with the SHIFT Key Pressed and Held
. (Alpha Mode Indicator OF F)
EJ[JElEJDEJDEJDEJDDD~El
ElEJEJDEJDDDDEJDDDE1E1~
o~~:
ElDEJDDEJEJDDDDDDB
DEJEJDE1DEJEJDDD DD@!)
D
AOOO1205
I
I H~~
(SPACE}
[[]
.}:'~[[] LI~~
Fi.,re 3-31. Katllkana Keyboard Codes Generated in the Unshifted Alpha Mode
(Alpha Mode Indicator ON)
3-24
cp
DDCJCJCJCJDDCJDCJDO[y]E1
E]DDDDDDDDDDDDEl8~
o~~: DDDDDDDDDCJDDDEl
BDDDDDDDCJCJCJLJa~
~
~
I
•
I
(SPACE)
HALF [ ] ]
LOW [ ] ]
DUP
SPEED
ON IT\)
LlNE~
o
AOOO1206
Figure 3-32. Katakana Keyboard Codes Generated in the Alpha Mode with the SHI FT Key Pressed and Held
(Alpha Mode Indicator ON)
DDDDDDDDDDDBB[y]E1
LOW [ ] ]
HALF [ ] ]
DUP
SPEED
(SPACE)
ON IT\)
LlNE~
NOTE: The CTRL (Controll key overrides the SHIFT key in both Kana and U.S. Mod..
AOOO1208
Figure 3-33. Katakana Keyboard Control Codes Generated with the CTR L (Control) Key Pressed and Held
3.7 OPERATOR CONTROLS AND
INDICATORS.
3.8 POWER SUPPLY.
The Models 743/745 power supply (see schematic
983842, sheets 1 and 2 or 937298, sheets 1 and 2)
converts ac input power to the regulated dc output
power required to drive all circuits within the
terminal. The output is listed in Table 3-3. The power
supply is designed to operate without degraded
performance over the full range of steady-state and
transient conditions. The Models 743/745 Terminals
consume a maximum 75 watts.
Operator controls and indicators in addition to those
contained on the keyboard include the following:
a.
Power Switch - a toggle switch is used to
switch both sides of ac line power to the
terminal. The switch is located on the top
right rear corner of the case.
b.
Bell - a buzzer is provided to produce an
audible signal which has a frequency of
3.2 kHz nominaL Duration of the signal is
250 ±25 milliseconds for reception of the
ASCII BEL character from the line or
local.
The power supply is a multiple output, self-oscillating
converter/regulator. The ac input is rectified and
filtered in the unregulated supply, converted to
regulated pulsating voltage in the converter, and
rectified and filtered in the output to provide the
3-25
o
Table 3-3. Power Supply dc Outputs
Output
Current
Output
Voltage
(VcIe)
( amps)
1.8
.25
.40
.80
.15
+30
+12
-12
+ 5
- 5
1 and 2) to the base-drive winding (terminals 13 and
14). The base drive signal is coupled through C318
and diode CR315, then through current-setting resistor R322 to the base of power transistor 0311.
Oscillation begins when the primary-side dc appears.
A current set by R329 and R324 flows through R322
into the base of 0311, bia~ing it to approximately 50
to 100 rnA collector current. Random noise components of the 0311 collector current thus ensures
that its collector current will increase because of the
positive feedback from primary to base windings. The
base current established through R322 ensures that
0311 will saturate. Therefore, the collector current
of 0311 will increase linearly as determined by the
primary inductance of transformer T301 and the
input dc supply voltage impressed across it.
Percent
Regulation
with Transient
Line/Load
and Offset
±10%
± 5%
±10%
± 5%
± 5%
appropriate regulated voltages to the load. A block
diagram of the power supply is shown in Figure 3-34.
A single ferrite core transformer provides drive to the
power switch transistor, multiple output voltages,
input-output isolation, and output voltage regulation.
The power supply operates in the flyback mode; that
is, energy stored in the transformer is delivered to the
load(s) during the off time of the power transistor.
Thus, only a single power transistor is necessary. The
required base drive power at the optimum impedance
level is provided directly from the transformer.
When the voltage drpp across R338 produced by the
0311 emitter current has risen to' approximately 0.6
volt, 0309 begins to conduct, shunting base drive
from the power transistor base which causes it to lose
saturation. As soon as its collector voltage begins to
rise, 0311 is rapidly switched off by regenerative
feedback. Falling collector current causes rising collector voltage (because of the transformer primary
inductance), resulting in falling base drive voltage and
fall ing base current. The collector voltage of 0311
"flys back" above the input dc supply voltage
(resulting in reverse base drive current coupled
through C318) until the rectifier(s) in the transformer
secondary circuit(s) become forward biased, and
currents flow into the output filter capacitors (and
output load resistances). The energy stored in the
magnetic field of the transformer during the "on"
Input ac power, after passing through a high frequency noise filter (T302-C325-C326), is rectified by
diode bridge CR323-326. The resulting dc current
then passes through R330 and SCR0310 (normally
on) where it is smoothed before storage across filter
capacitors C306 and C308, from which the input or
primCf"Y side dc current is supplied.
3.8.1 POWER TRANSFORMER. The power supply
circuit is self-oscillating; the positive feedback path
passes from the power transformer primary (terminals
UNREGULATED
SUPPLY
ACIN
I
~
SOFT
START
I
~
OUTPUT RECTIFIERS
CONVERTER
~
~
,-
y
'--
AND
FILTERS
~ DC OUT
r--
VOLTAGE
REGULATOR
FAILURE
Ir--
PROTECT
Figure 3-34. Model 743/745 Power Supply Functional Block Diagram
3-26
AOOO1114
time of 0311 is transferred to the output during the
"off" time of 0311.
R311 with C314 and R312, along with the main
regulator filter capacitor C313, serve as highfrequency noise and spike filters so that C313 is
charged to the average value (less a diode drop) of the
flyback voltage appearing across the sense winding
during each cycle. As soon as voltage is developed
across C313, the negative input of U302, because of
the voltage divider formed by R325, R335, and
R336, becomes negative with respect to its positive
input which, since zener diode CR317 passes essentially zero current until its breakdown voltage is
approached, is held at the full output voltage of C313
through R316, R314, and R313. This assures that the
op-amp will remain in positive saturation and, therefore, that 0305 will be off. As the regulator outputs
rise toward their correct values and the voltage across
C313 increases proportionally, the voltage at the
U302 positive input is clamped as CR317 begins
conducting. Voltage then appears across R313 and
R314 because of current in R316 which, as the
voltage on the negative input of U302 approaches
that of its positive input (because of current through
R315), initiates output voltage regulation. As its base
voltage falls below the output of C313 by two diode
drops, Q305 begins to conduct, acting essentially as a
controlled constant current source whose output
current flows into timing capacitor C317.
A 3O-volt output is obtained from winding 3-4,
rectified by CR322, and filtered by C332 and C331.
Positive and negative 12 volts are obtained, respectively, from windings 9-10 and 11-12, diodes CR301
and CR304, and capacitors C301 and C303. Positive
5 volts is obtained from winding 7-8, rectified by
CR302 and CR303 in series, and filtered by C302.
The higher drop of the series-connected diodes
permits obtaining 5 and 12 volts from input flyback
voltages with a 2 to 1 ratio (about 6.35 and 12.7
volts).
Secondary current(s) continue to flow, decreasing
(approximately) linearly with time, until the transformer flux has fallen essentially to zero. The
transformer terminal voltages remain at their flyback
values during the entire period of secondary current
flow. During a single flyback period the output
voltages rise only a few percent of their full values, as
determined by the output capacitors. As the flyback
currents fall to zero, the voltages across the transformer windings decay toward zero. During the
fly back interval C318 acquires a charge of about 1
volt (left hand side positive) from current drawn from
R322 which is clamped by 0309. Transistor 0309
acts as an emitter follower in the inverted mode
(collector acting as emitter and vice-versa) when its
collector goes over a diode drop below the primary
side dc ground (the current coming from start-up
resistors R329 and R324 is much smaller than the
currents in R322 and have negligible effect once
oscillation is initiated). As the voltage across the base
drive winding falls toward zero, the positive voltage
across C318 raises the base of 0311 to the threshold
of conduction through R322, initiating another
regenerative power transistor turn-on cycle.
During flyback the base drive winding, which also
drives R323, is negative, energizing CR314 and
thereby clamping the timing capacitor to ground
through the base-collector diode of 0307, sinking the
output of current source 0305. When the power
transistor 0311 switches on after flyback ends, R323
is taken positive by the base drive winding, thus
causing 0307 to operate as an emitter follower,
buffering the timing capacitor C317. The voltage
across C317 then begins to ramp up at a rate
proportional to the current from 0305. When the
increasing voltage across C317 reaches approximately
two diode drops, the output of buffer 0307 begins to
rapidly energize 0308, which shunts drive current
from 0311 and causes its regenerative turnoff just as
does current limiter 0309. The action of the regulator loop thus controls the power transistor-on time
and thereby the peak current flowing in the transformer primary.
3.8.2 VOLTAGE REGULATOR. Transistors 0305,
0307, and 0308, along with op-amp U302 and
associated resistors and diodes and regulator-winding
transformer-terminals 5-6, constitute the voltage
regulator portion of the power supply. Until the
output voltages reach their correct values, the power
transistor collector current ramps up to its current
limit (as set by 0309) each cycle, transferring the
maximum safe amount of energy (determined
principally by transformer heating and core saturation limitations) each cycle to the filter capacitors
and output loads. During each flyback cycle C313 is
charged through CR310 and series resistors R311 and
R312 the same way as the output capacitors.
The voltage across C313 is held constant (to within 1
millivolt) by U302 operating at its full dc open loop
gain to maintain zero differential input voltage.
Constant voltage across C313 implies that the flyback
voltage feeding CR31 0 remains constant, and since all
windings are very tightly coupled (required for
3-27
terminal or interference on the ac power line. The
terminal power supply and other I circuitry are not
susceptible to interference conducted on the ac line.
satisfactory power supply operation) the flyback or
output voltage from all windings remains constant
(ignoring I R drops). Therefore, almost no crosscoupling to the output voltage from one winding
results from changing loads on any other winding,
and nearly no effect results from changing primary
side dc input voltage. The only significant output
voltage deviations, well within tolerances, are the
changes in output voltage from its own load change
which result from rectifier diode drop and winding I R
drops. High frequency ripple and noise components
are minimized by the use of four-terminal capacitors.
3.8.6 ELECTRICAL POWER INTERFACE.
•
Input Power - Standard input power is
90 to 133 volts ac, 47 to 63 Hz,
single-phase. Power consumption does
not exceed 75 watts.
NOTE
Terminal operating voltage is not fieldconvertible from/to 115/230 volts ac.
3.8.3 FAILURE PROTECTION. Transistors 0302,
0303 and associated components form a latch which
positively switches off converter switch 0311 in the
event of sustained overcurrent (> 500 msec) which is
sensed by peak rectifier/filter CR309-C309. The same
protection occurs if output overvoltage is sensed by
0304 and associated components and is transmitted
directly to the latch. When the latch triggers, it
switches on 0306, initially providing a large base
drive by the discharge of C316, principally through
R320 and CR313. This assures that 0306 will
immediately switch off 0311 and hold its base below
the threshold of conduction « 0.2 V) as long as
primary side dc is present.
R343, CR333, and CR334 provide a clear for the failprotect latch when ac power is turned on by pulling
the base of transistor 0302 down to primary ground.
The fail-protect latch clear is inactive after the softstart SCR 0310 turns on, which enables the failprotect latch to set in the event of an output overvoltage or a continous overcurrent condition.
•
Transient Voltage - Transient voltage
must not exceed the limits specified in
Figure 3-35.
•
Voltage Spike - Voltage spikes on the ac
tine must not exceed the energy contained in a 175 V, 100-microsecond
triangular pulse.
•
Power Connector - The ac power line
connector is a standard UL and CSA
approved, type-U, grounded, three-prong
plug with a connecting three-wire UL and
CSA approved cable at least 6 feet long.
3.9 CURRENT LOOP INTERFACE.
3.9.1 RECEIVER CIRCUIT. The current loop (TTY)
receiver (see schematic 983842, sheet 8 or 937298,
, sheet 2) consists of the necessary circuitry to sense
current from an external source and to convert the
current levels to the appropriate EIA-Ievel logic
values. The voltage drop across receiver inputs
RL1/RL2 is 3 volts (maximum) at 20-mA loop
current into R L1. The mark/space threshold decision
current is nominally 8.5 ± 3.5 rnA. The receiver
circuit utilizes an optically coupled isolater to isolate
the current loop from the terminal circuitry.
3.8.4 SOFT START CIRCUIT. SCR 0310 and
resistor R330 (with associated components) form a
"soft start" circuit to limit the peak inrushing current
during initial charging of primary side dc filter
capacitors C306 and C308 (to < 25 amps). Initial
charging current is limited by R330. 0310 is triggered
after approximately 50 msec as determined by C327
and associated resistors. Charging current for C327
disappears immediately upon removal of the ac input,
and the 0310 gate voltage falls below the trigger level
(in approximately 20 msec) before the main filter
capacitors have appreciably discharged. This ensures
that R330 will limit surge currents if the ac input
should fail for a few cycles and then return.
A current level at the receiver circu it input above the
mark/space threshold will forward-bias the photo-
diode of U302. When the U402 photodiode is
forward-biased, the phototransistor is energized, supplying base current drive to energize 0401. With
0401 on, a logic ON E is presented to the input of
U40t, and the output of U401 is negative (less than
-3 volts).
3.8.5
ELECTROMAGNETIC
INTERFERENCE
(EMf) FILTER. Switching noise or other EMI from
the power supply does not cause circuit errors in the
3-28
~
. j .\
------~--
I
--- '-- ------ --I i !l--+-----+-----+
+--++~~-+---+-~~
. /Ii
VOLT~GE
I
I
_ 1I ____ _
I
r-
'-__~~
.
200
180
___ >:
160_
I
~
140 -
I
Z -
~
,
-r~---
-~-
-, .
OF THErSEVEREST
II
'/ /
>"i
1---
- -- - -
f-------
-~-_____r__---
--+--+---+-------i---t
SURGE
I
,
r~r'K~--"I_ _+-__ ------11------+""i'
120
~
-
-
-
-
-
-
~
-
t -
-
-
~
I- -
-
J.
~-
- - -
-
-
-
-
,.... -
-. -
-
I- -
-
-
-
-
-
- 100 _ -:-__ _-_=-----=-_=-=- - -__-_+-__-_-_-_-__+~---~----_+_------t~.--- _-_+......_-__4"---_-----i~_-_~_r_---__+----~~----
r--~-~-~
I
~
LOCI OF EQUIVALENT STEP FUNCTIONS
[
I
~-
~>0..
S<
80
r-l----"-
enf-
.J
a
60
u
u
-- -- +3V)
Mark
Negative
(Logic ONE)
« -3)
Transmit Circuit Summary:
3.9.2 TRANSMIT CIRCUIT. The current loop (TTY)
transmitter consists of the circuitry necessary to
switch the current in the transmit loop (supplied
from an external source). The input to the transmitter is an EIA-Ievellogic value. The voltage drop across
the transmitter output terminals is less than 1.5 volts
at 20-mA loop current. The maximum
Spacing
leakage current is 0.5 rnA to 50 Vdc.
3-29
Transmitter
Transmit Data
Logic
(J403-3)
Designation
Output
Positive
Space
Open
(>+3V)
(Logic ZERO)
(No current)
Negative
Mark
Closed
«-3V)
(Logic ONE)
(Current flow)
3-10 FIRMWARE.
correct address, the CPU scans the keyboard one row
at a time. After outputting the scan the CPU then
reads the I/O input bus to determine the status of the
eight keys scanned in that particular row. In the same
manner, but with a different address, the CPU
controls the printhead stepping motor, the printhead
pressure and line feed devices, and the bell.
The basic microprocessor control electronics consists
of the central processing unit (CPU) integrated
circuits, its ROM and RAM, the input/output (I/O)
device, control logic for communication between the
CPU and I/O, and buffers for communication of data
between the I/O and the control devices. A block
diagram of the firmware control system is shown in
Figure 3-36. The I/O and timer devices are shown in
Figure 3-37.
The printhead line buffers are controlled solely by
the CPU address lines. The appropriate data is output
on address bits 12 to 15 to the address decode logic
to generate a printhead strobe, and the particular
printhead line buffer data is output on address bits 0
to 11, thus heating the appropriate printhead elements to create visible images on heat-sensitive
printing paper.
The ROM is used for program and table-lookup
storage. The 64 words of RAM are utilized for
program stacking and for software flags, counters,
etc. Address decoding logic is included to supply
enable signals for the ROM, RAM, I/O, the I/O
output buffers, and the printhead line buffers.
The normal state of the CPU is the halt state. The
CPU is interrupt-driven out of the halt state when
processing is required. An interrupt forces the. CPU to
one of eight different trap locations. Power-up may
be considered an interrupt since it occupies trap
location O. These interrupts are generated within the
I/O device but can be controlled by the CPU. The
CPU can disable or enable all interrupts, or it can
enable any combination of them by loading the
The central processing unit (CPU) controls the
operations of the I/O through firmware commands.
These commands are decoded by the I/O chip from
the CPU control signals and five address bus lines
from the CPU. The firmware commands include read
receiver buffer, read input bus, read interrupt reset
ROM, read I/O status, load discrete commands, load
baud rate command, load tl'ansmit buffer, load
output register, load interrupt mask register, and load
one of five timers.
interrupt mask register.
The firmware package is an operating system responsible for Model 743/745 Data Terminal operations.
After loading the I/O output bus and outputting the
Y7
Y6
Y5
8080
Y4
ADDRESS LINES (12)
CENTRAL PROCESSOR
Y3
UNIT
(CPU)
__
J3~
Y2
Yl
__ _
ADDRESS DECODE
RAM
Xl X2 X3 X4 X5
MOTOR
TACH
a-BIT
OUTPUT BUS
a-BIT INPUT BUS
PRINT
FAST
STEP
DRIVER
PHASE A
BUFFER
}
TO PRINTHEAD
STEPPING
MOTOR DRIVE
CIRCUIT
PHASE B
' -_ _ _ _ _ _ PHASE C
' - - - - -_ _ XMIT DATA
MATRIX KEYS
KEYBOARD
MULTI·
PLEXER
BELL
7 LINES
}
FUNCTION KEYS
LINE FEED AND
HEAD PRESSURE
AOO01095
Figure 3-36. Model 743/745 Firmware Control System Block Diagram
3-30
+5V
GND
+12V
-5V
01
02
-----------------------------------------------------------------!--------i--------!--------!--------t------ -t------ -----INTERRUPT __~_ _ _ _--.
CHIPSEL
(t)
SYNC
CONTROL
......
(8.)• •
~~:~:SNAL
----~.
BIT 7
LOGIC
ADDRESS
(0-3)
_.. --------
(4)
B
U
DATA . . . .(.8)• •
BUS
..
R
INTERVAL
TIMERS
EXTERNAL
OUTPUTS
(8)
(5)
l . . -_ _ _ _ _ _ _ _ _~-
XMT. DATA
RCV DATA
INTERRUPT
STORAGE
REGISTER
SENSOR
l . . -_ _ _
RCV. INT.
l..-_____
XMT INT
...... ____ .. __ .. ____ ... ___ .......... ____ ..... ___ ..... __ ..... _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .... __ ................... ______ .. _ ...... _ _ _ _ _ _ _ _ _ _ _ _ _ ... _ .. _ _ _ _ _ _ _ _ ... _ _ _ _ _ _ ... __ .... _____ ... _ _ _ _ _ _ _ _I
A0001096
Figure 3-37. Functional Block Diagram I/O and Timer Device
3-4. The software system is divided into three
operating levels. The base level (when no interrupts
are occurring) . is a halt state. All Model 743/745
processing is done in response to an interrupt. No
activity occurs at the base level. The next level is
composed of the keyboard timer interrupt and the
receiver interrupt.
For purposes of discussion, the operating system may
be divided into several major subsections as shown in
Figure 3-38. The power-up routine initializes all
system pointers and flags and starts the keyboard
scanner routine. The keyboard scanner routine
detects key depressions and encodes them into ASCII
characters, and the data control routine directs the
characters to the appropriate processing program. The
transmitter routine generates parity and transmits
characters. The character analyzer routine determines
if the mechanism is busy and, if not, passes the
character to the appropriate processing subprogram_
If the mechanism is busy, the character is queued for
later processing.
The receiver and keyboard routines can only interrupt the processor when it is in the halt state; neither
routine can interrupt the other. The highest level is
composed of the two timers associated with printing/
stepping and the sensor interrupt. These routines can
interrupt the processor out of the halt state, keyboard scanner, or receiver routines. Routines running
at the highest level cannot be interrupted. This
three-level interrupt system is implemented by controlling the contents of the interrupt mask register in
the I/O device.
The operating system is provided with eight interrupts; five interrupts are used by the software system.
A brief description of each interrupt is listed in Table
3-31
KEYBOARD
SCANNER
POWER-UP
RECEIVER
I
I
DATA CONTROL
I
BACKSPACE
SUBROUTINE
r---
CHARACTER
ANALYZER
ROUTINE
j
LINE FEED
SUBROUTINE
r-
TRANSMITTER
l
PRINT/STEP
SUBROUTINE
CARRIAGE
RETURN
SUBROUTINE
I
BELL
SUBROUTINE
AOO01097
Figure 3-38. Model 743/745 Firmware Structure
Table 3-4. Firmware Operating System Interrupts
Trap
0
I
Location (HeX)
I
Name
I
Function
00
Power-up
Activates the power-up initialize routine
08
Timer 2
Used for step timing
2
10
Sensor
Feedback for motor control
3
18
Timer 3
Used for print/step timing
4
20
Receiver
Character received by I/O
5
28
Transmitter
Transmit buffer empty (not used)
6
30
Timer 4
Keyboard scanner timer
7
38
Timer 5
Spare timer
3-32
3.10.1 POWER-UP ROUTINE. When the POWER
switch is first set to ON, the power supply generates a
reset to the CPU. This starts the CPU with interrupts
disabled at trap location 0 or at address 0000. The
purpose of this routine is to:
(1)
3.10.2 KEYBOARD ROUTINE. The keyboard
routine scans, encodes, and debounces keys. After
each key entry keyboard reports to data control the
status of the function keys and whether or not a valid
key has been detected in the keyboard matrix. The
keyboard matrix is diagrammed in Figure 3-39.
Initial ize the necessary RAM locations
such as flags, counters, pointers, etc.
(2)
Reset the I/O
(3)
Set up the CPU stack pointer
(4)
Start the keyboard scanner
(5)
Begin machine functions such as line feed
and returning the printhead to column 1
by performing backspaces.
3.10.2.1 Scanning (Standard ASCII). In the keyboard
routine three unique time periods are defined:
(1)
Search period = 4 msec
(2)
Debounce period = 11 msec
(3)
Wait period
= 11
msec.
The time at which the keyboard routine is re-entered
is determined by one of these three modes. For the
search and debounce modes, a scan takes place upon
every entry. The wait period is utilized when a
PAPER ADVance is pressed or when a character is
The CPU then enters the halt state and waits for more
work in the form of interrupts.
COLUMN
C,
Co
Ro
REPEAT
R1
2
C2
<
FS
HERE
C4
C3
=
GS
>
RS
C5
C6
/
0
7
8
us
IS
$
#
%
4
3
C7
&
6
5
9
+
SOH
R2
3:
a::
0
A
STX
ETX
LF
F
]
CR
L
SO
M
NAK
DC4
DC3
DC2
R5
\
FF
K
BEL
ACK
E
0
[
VT
J
R4
ENQ
EOT
c
B
R3
N
SYN
"
HT
BS
H
G
OLE
SI
ETB
@
DCf
P
0
Q
EM
CAN
R
s
T
U
V
W
X
Z
LF
CR
DEL
ESC
SPACE
BREAK
SUB
R6
Y
PAPER
LEGEND
CONTROL
ADVANCE
NOTES
1. NUMERIC MODE KEY CODING IS NOT SHOWN.
SHIFT
2. SHADED BLOCKS DENOTE KEYS
ONL Y ON FULL-ASCII KEYBOARDS.
PRESENT
UNSHIFTED
CHARACTER
AOOO1098
Figure ~39. Model 743/745 Keyboard Matrix Encoding Scheme
3-33
repeating. Upon an initial detection of paper advance,
scanning is inhibited for 20 wait periods. While
repeating a character, scanning takes place only once
every third wait period. When a second key (other
than the R EPT key) is detected in the matrix, the
scanning process is immediately stopped and the
keyboard routine reports to data control that no new
key was detected. Otherwise, when one or no key is
pressed, a complete scan of the matrix occurs. The
scanner utilizes a row and column counter so that
when a depressed key is detected, row and column
location data is recorded for use in encoding. Function keys are read and their status reported to data
control upon every entry into the keyboard routine.
row/column number of each key will provide the
ASCII code for that key in the unshifted mode. For
the CTRL (control) and SHIFT modes the ASCII
code is obtained by adding or subtracting an appropriate number depending upon the particular key.
After encoding, the new ASCII character is passed to
data control for immediate action. Encoding occurs
upon detection and not after debounce of the key.
3.10.2.5 Encoding (APL/ASCII). When the APL
keyboard is in the APL mode, shifted and unshifted,
the row/column data is used to obtain the ASCII
code from a look-up table. Encoding in the full-ASCII
mode, shifted and unshifted, and in the CTR L
(control) mode is identical to standard-ASCII keyboard encoding described above.
3.10.2.2 Scanning (APL/ASCII). The APL keyboard
employs the same three time periods (listed above)
used by the standard ASCII keyboard, but the APL
keyboard has no REPEAT key. The APL keyboard
repeat function is, instead, implemented by holding a
valid key depressed longer than 0.5 second. The
keyboard routine scans the matrix and, if a key is
held depressed longer than one scan time, a wait
period is initialized for 0.5 second. After 0.5 second
if the key is still depressed, the next scan !ime will be
set for 4 msec and the character represented by the
depressed key will be repeatedly printed at a 10-CPS
rate until the depressed key is released. All other APL
keyboard scanning functions are identical.
3. 10.2.6 Repeat Function. Any printable character
may be repeated by pressing a character key in
conjunction with the REPT key (except for the APL
keyboard). The character will be printed continually
until the R EPT key is released. Pressing a new key
causes its character to be repeated as long as the
REPT key is held depressed.
3. 10.3 RECEIVER ROUTINE. Upon recelvmg a
full-ASCII character the I/O device transfers the
character from the receiver register to the receiver
buffer and generates an interrupt to the CPU. The
CPU then removes that character within 30 msec to
prevent loss. The sale purpose of the receiver routine
is to fetch the character from the receiver buffer and
pass it to data contro I.
3.10.2.3 Debounce. A debounce period, defined as 11
msec, occurs upon make and break of a key.
Debounce of make-of-a-new key and break-of-anold-key may occur simultaneously. When the CPU is
not in the debounce mode, it is considered in the
search mode which lasts 4 msec. The search mode
occurs also for both make and break, and like
debounce, search-for-make-and-break may also occur
simultaneously. Therefore, if two keys are pressed
almost simultaneously, the second key need only be
pressed 4 msec past the break bounce of the first key.
The PAPER ADVance and R EPT keys are not
debounced.
3.10.4 DATA CONTROL ROUTINE. Data is
supplied to the Models 743/745 from two sources:
the keyboard and the receiver. Hence, the data
control routine has two major divisions: keyboard
data control and receiver data control.
3.10.4.1 Keyboard Data Control. The first function
of keyboard data control is to update the baud rate
status to the I/O and to update the local flag status in
RAM. It then decides whether or not the keyboard
has any new data; if not, data control is exited.
Transmission of a new character occurs if the
terminal is on-line and the transmitter is not busy.
The character is transferred to the character analyzer
to determine what printer action is to be taken if the
terminal is in the local mode or if the transmitter is
not busy and the terminal is in the half duplex mode.
3.10.2.4 Encoding (Standard ASCII). When a new
key depression is detected in the matrix, it is encoded
immediately. [REPT (repeat), HERE IS, BREAK,
and PAPER ADVance are not ASCII-encoded keys.}
In the NUMbers mode the row/column data is used to
obtain the ASql code from a look-up table; five
special keys are similarly encoded: LINE FEED,
carriage RETURN, RUB OUT, the space bar, and
ESC. All other keys are positioned in the matrix so
that the addition of a constant number to the
3.10.4.2 Receiver Data Control. A received character
is sent to the character analyzer if the terminal is in
3-34
character capacity) for later processing.
the on-line mode, if at least two spaces remain in the
eight-character printer character queue buffer, and if
the paper-out count is not 5. Otherwise, the character
is ignored and no action is taken.
3.10.5.1 Bell Routine. The time interval for the
audible signal to sound upon receipt of a BEL
character is 250 msec. To time this period the bell
routine utilizes the keyboard timer. When a BEL
character is received, a counter is set to the appropriate value and the audible signal is energized. The
keyboard routine then decrements this counter at
each entry and when the count reaches zero, the
audible signal is switched off.
3.10.4.3 Print Complete. After completing a printer
action, all printer software routines enter print
complete. This terminates the printer action and
indicates that the mechanism is free. Print-complete
detects any character that might have been stored in
the printer queue buffer and passes it to the character
analyzer for processing.
3.10.5.2 Print/Step Routine. The print/step routine
generates the pulse train shown in Figure 3-40. The
routine can be divided into two sections. The first
section energizes the printhead voltage (PVOL T),
indexes into the dot matrix table (stored in ROM) by
the ASCII character value, chooses the appropriate
dot pattern, and loads the printhead one column at a
time. Loading is accomplished by generating an
address which includes the printhead strobe bit, the
column being loaded, and the column dot pattern.
The printhead is loaded during the first 200 psec of
PVOLT-on. The PVOL T signal remains on for 10
msec.
3.10.5 CHARACTER ANALYZER. The character
analyzer accepts a character from either data control
or print-complete and determines what printer action
should be taken. A BEL character immediately starts
the audible signal. No action is taken on a DELete or
NUL character. If the mechanism is not busy, the
following procedure is taken on all other characters.
Printable characters enter print state 1 and immediately start printing. CR, LF, and BS enter appropriate
printer states, but all other control characters are
ignored. If the mechanism is busy, the character is
stored in the printer character queue buffer (eight-
PRINT
f-~t-+-+--
-4
-T--;-~-+--t
_ +----+-_l-_____+_ ~-+
;t-+-~
J --
- -, : +
• - . -
r: -
-- -.. -+
i"
-----+
t
~- 1-1 -i-- L t ----~-~ -tt-it _L
' - -+-.
--.- -....
+ - -+
-t-
4
~-+ 1
+i h--t+ ~+~-+ -tj
r
I
-+tl-i- ,
t
.-+
-r
'-1
~~ ~ ~_
t-t +1- Tt +H:- ~ -r--r ~ r ,
-+-~ ~+ +- ~ -:- --+- L+ ~-+-~---~-+
+-
1----
~---.-:._L
+
+
-+--+- -
1"
+
- -
-"-_.~
'I
-~ +"- - c---l-+-- +-
+ -+-- -----t
->-T·-
~~-+-~
-1--:--
+- __ L __
+~_
..
+-
_1-_
-t,-,
FAST
STEP
-+
+ -..
-~
+-
~
-.
+-
SENSOR
--<.--+
!
I
~ t +i
'
+- t---
t
t
t
+-1
-+
PHASE B
c--:-t ~T- ht ' :
~
I
',__"
_!
t-t t-
-1 -T4-+~
_Ll-, __
- t-
-t
...
T
t--i
t - .-It
i
-+
+
+
-l-
~
+--t-
t,
+-+--
-.-I-+-
-r-; t:~JT-~
_J : _
L_
4_
1 1
-+-
+--+-1-
- ~- -~-i-
--!
;
+ 1 ~ 4- i -.. . i--,
t
:--;-J-__
-. - 1 -..l_-+
__
-t-_':'-~
_____ _
Figure 3-40. Models 743/745 Print/Step Routine Pulse Train
3-35
t
r-H-:
-f -+f
-
.L
4-
-T-t--I---
-
-~ + +--'--+-i-~
'-r-t -1--+,
_
_
1 __
1__
1 _ _
-+--
~ __
-~
!
:
AOO01099
during the first five steps of acceleration
to provide quick acceleration.
The second section steps the printhead one column
by using two timers and the sensor. One timer is used
to control pulse widths for the fast and step pulses.
The sensor signals the beginning of braking. The
second timer is used to time the total step and is
divided into two segments: the first verifies that the
sensor occurred, and the second segment defines the
end of the step. The use of the second timer makes
the step time independent of when the sensor
interrupt occurs. Figure 3-41 shows a state diagram of
this sequence.
3.10.5.3 Backspace Routine. The backspace routine
uses the step section of the print/step routine. The
only difference is that the phase is calculated to cause
the printhead to step left instead of right.
b.
Constant Speed Control. Once the feedback sensor signal occurs faster than 1.5
msec, the motor phase change occurs
when the timer expires, decelerating the
motor. Acceleration and deceleration are
used for the constant speed region. Note
that the change from acceleration (paragraph a. above) to constant speed occurs
without a firmware change of state.
c.
Deceleration at Column 12. When the
printhead reaches column 12 and the
phase change to move to column 11 is
output, the firmware detects that it is
time to decelerate. Instead of setting the
timer to 1.5 msec, a longer time is used.
For each column throughout the de~eleration period, a successively longer
time is used when setting the timer. This
causes the motor phases to change on the
timer, initiating deceleration. The values
in the deceleration table were selected to
decelerate the motor along a profile
which resembles the natural deceleration
of the system.
d.
Acceleration/Deceleration Inside Column
21. A different rate of acceleration is
used for each column- inside column 21.
A slower acceleration enables the processor to intercept the deceleration profile
and bring the printhead to a smooth stop.
This time is used until a column is
reached inside column 12 where its
deceleration time is longer. This represents the point where the deceleration
profile is intercepted and deceleration
begins.
3.10.5.4 Line Feed Routine (Solenoid Line Feed
Mecrranism). The line feed routine energizes the
printhead lift and .Iine feed solenoids for 15 msec,
then off for 16.8 msec. This causes the paper to
advance one line.
3. 10.5.5 Line Feed Routine (Stepping Motor line
Feed Mechanism). The line feed routine energizes the
line feed stepping motor by alternately energizing the
LF-step A and LF-step B drivers. Each driver phase is
energized twice for 6 msec each, producing a complete paper line feed comprising four step segments of
7.5 degress each for a. total 30 degrees. Figure 3-42
shows a stepping motor timing diagram.
3. 10.5.6 Carriage Return Routine. A carriage return
from column one causes no action. A carriage return
from column two is treated as a backspace. Printhead
lift is activated until the printhead reaches column
two. Stepping current remains on throughout the
carriage return to provide the motor sufficient current for acceleration and deceleration. Speed control
during carriage return is accomplished by changing
phases on the motor feedback sensor (acceleration) or
by changing phase after the feedback sensor (deceleration). Figure 3-43 is a state diagram of the carriage
return algorithm.
a.
3.10.6 CHARACTER BUFFERING. There are several
advantages to the use of character buffering in a data
termi nal. Using a character buffer to store a received
character while the mechanism is busy eliminates
need for the traditional filler characters sent after a
carriage return. To implement such a scheme the
print/step time of the data terminal must be less than
the time consumed to receive a character. Character
buffering increases input to the terminal byeliminating the transmission time used to send filler characters. Interfaces to the data terminal are simplified
Acceleration Outside Column 20. In the
carriage return routine the timer value is
set to 1.5 msec. Since the motor is
stopped, the timer will expire and cause
an interrupt before the sensor reacts.
Motor phases are changed when the
sensor reacts, causing acceleration of the
motor. Five 1-msec pulses are generated
3-36
PVOLTON
LOAD PRI NTHEAD
PVOLTOFF
FAST/STEP ON
NEXT PHASE ON
FAST OFF
. SENSOR DELAY
FAST ON
STEP OFF
LAST PHASE ON
SENSOR
FAILURE
FAST OFF
STEP ON
LAST PHASE ON
END OF PRINT/STEP CYCLE
STEP OFF
LEAVE NEXT PHASE ON
AOOO1263
Figure 3-41. Print/Step Routine State Diagram
3-37
LFSTEPA
J
LF STEP B
~@
I
6 msec
(ONE
SETTLING
"4
: .5 msec TIME
17
LlNE-FEED)------II~....4I1--NEXT
CHARACTER -- ....
Figure 3-42. Stepping Motor Line Feed (IF)
Routine Timing Diagram (Mechanism PIN 999257)
(CRST2)
(CRST4)
DECELERATION
ACCELERATION
(CRST4S)
DECELERATION
(CRS4S2)
DECELERATION
(CRTYT2)
(CRSTF)
A0001101
Figure 3-43. Carriage Return Routine State Diagram
3-38
•
since the transmitting system does not need to
recognize certain control characters which require
special handling. Because of the desirability of character buffering and the ability of the Models 743/745
to perform a print/step cycle in 28.5 msec, an
eight-character buffer is designed into the operating
system.
•
•
3.10.7 PAPER ADVANCE OPERATION. The paper
advance (PA) function is generated by the keyboard
routine. Upon an initial detection of the PAPER
ADV key, the terminal is forced OFF LINE, a carriage return character (CR) is generated, and scanning
is inhibited for 20 wait periods. The PA flag is set,
and the carriage return character is processed. As long
as the PAPER ADV key is depressed, the keyboard
scanner sets the PA flag and generates a CR character
every third wait period. At the end of the CR, the PA
flag is checked and control transfers to the line feed
routine.
If the terminal is taken OFF-LINE during
an ABM sequence, the sequence will be
aborted
The ABM sequence cannot be activated if
the terminal is performing a paper
advance.
If the terminal is in the half-duplex mode
and the option to print the ABM message
is set, the ABM message will be transmitted and printed. Characters received
during the printing of the ABM message
will also be printed.
•
During an ABM sequence, characters
generated at the keyboard are ignored.
•
Parity is generated based on the strappable option on the PWB (factorysupplied only).
•
3.10.8 ANSWER-BACK MEMORY. The Answer-Back
Memory (ABM) option for the Models 743/745 Data
Terminals transmits any programmed sequence of one
If the BREAK key is already activated
when an ENO character is received, the
ABM sequence will start; but the transmitter will not transmit the characters
because it is in the BREAK mode. If the
terminal is in the half-duplex mode and
the option to print is enabled, the
message will be printed.
to 21 ASCII characters to serve as station identification. The character string, along with the system
software to implement the ABM feature, is included
in a 256 x 8 PROM (74S741) which plugs into a
socket on the PWB. The message sequence is activated
by the HERE IS key or by receipt of an ENO
character if the terminal is on-line. An optional bit in
the PROM indicates to the ABM system program if
the ABM message is to be printed when operating in
the half-duplex mode.
3.10.9 LEFT MARGIN/PAPER-OUT DETECTION.
During the step sequence, the print/step routine can
detect a sensor failure. During normal operation,
sensor failures indicate an attempt to step the
printhead through an abnormally high friction area
(left margin stop or stepping the printhead with no
paper between it and the drive roller). This information is used to detect both left margin and
paper-out in the Model 743/745 operating system.
The line feed routine causes one line feed and clears
the PA flag. A continuous stream of line feeds then
are executed as long as the PAPER ADV key is
depressed. Received characters will be lost since the
terminal is forced into an off-line mode.
3.10.9.1 Left Margin Detect. During power-up, the
printhead is stepped to the left by performance of
repeated backspaces. A sensor failure is generated
when the printhead is stepped against the left margin.
Sensor failure also occurs if the motor is told to step
to the phase it already is in. By forcing the printhead
to step at least three steps during power-up, the
operating system gets in step with the motor and the
next sensor failure after the initial three steps is
considered the left margin.
Following is a list of operating characteristics of the
ABM option:
•
Activated locally by HERE IS key if the
terminal is ON LINE
•
Activated remotely by receipt of the
ENO character if ON LINE
•
While in an ABM sequence, operation of
the HERE IS key or receipt of an ENQ
character will not cause the ABM sequence to restart
3.10.9.2 Paper-Out Detection. During step operations
after power-up, a sensor failure will activate the
3-39
between the terminal and a standard commercial
telephone line. Since the bandwidth of telephone
lines is limited, digital information cannot feasibly be
transmitted over any but short distances. However,
digital information can be converted into analog form
which can be transmitted over telephone company
voice-grade telephone lines of the direct distance
dialing (DDD) network. The acoustic coupler is
standard on the Model 745; the modem is an option
available on the Model 743.
paper-out condition. The friction between the printhead and the platen is too great without paper to
perform a normal step. The character analyzer checks
this condition before passing control to the print/step
state. When paper-out is activated, the character
analyzer will only process CR, LF, and BEL characters. The keyboard routine checks for a paper-out
condition when the PAPER ADVance key is
detected. Instead of generating a series of CR
characters, the keyboard routine generates a series of
LF characters. Paper can be loaded in the terminal by
using the PAPER ADV key or LINE FEED key when
the terminal is off-line. Entering a CR with the
terminal off-line during a paper-out condition will
force a power-up return to the left margin.
For 300-baud operation an analog technique called
frequency shift keying (FSK) is used to transmit data.
Frequency shift keying simply is the shifting of a
signal between two frequencies. One frequency
represents a logic ONE; the other represents a logic
ZERO. Figure 3-44 shows an alternating digital data
pattern and its FSK equivalent. The acoustic
coupler/modem circuitry in the Model 743/745 converts the digital data to be transmitted into an FSK
signal and also converts a received FSK signal into
digital data. The bandwidths of the FSK signals are
chosen to provide simultaneous transmission and
reception of data (full duplex) over a single voicegrade line. The frequencies assigned to the acoustic
coupler/modem are listed in Table 3-5. The Bell
System frequencies are used primarily in the United
States, Canada, and Mexico. The CCITT frequencies
are used throughout Europe, Japan, and Australia.
3.10.9.3 On Line Operation During Paper-Out. When
the terminal is operating in the on-line mode and runs
out of paper, the paper-out sequence (see paragraph
3.10.9.2 above) will be entered. If the terminal is
unattended, the carriage returns in the input data
stream will cause the terminal to repeatedly seek the
left margin, then detect no paper. To prevent such a
loop from occurring, a paper-out count is incremented each time paper-out is detected. If this count
reaches 5, the receiver will start discarding all
characters. This count is reset to a by a successful
carriage return, by a paper advance operation, or by a
power off/on sequence.
3.11 ACOUSTIC COUPLER/MODEM.
The acoustic coupler interfaces with the telephone
line through a standard telephone handset which fits
into two rubber muffs on the rear of the Model 745.
The acoustic coupler/modem circuitry in the Models
743/745 Data Terminals provides the interface
. : : : t : --:-:
• •
Figure 3-44. Frequency-Shift Keying (FSK) Modulation
3-40
~-
+
AOO01267
operation of the acoustic coupler is described first
and the differences between the acoustic coupler and
modem are discerned where appropriate in the text.
Table 3-5. Acoustic Coupler/Modem FSK
Transmission Frequency Assignments
Frequencies (Hz)
Logic
Lavel
XMIT
"1" (MARK)
1270
2225
980
1650
"0" (SPACE)
1070
2025
1180
1850
Bell System
I
RCV
CCITT
XMIT
3.11.1 RECEIVER SECTION. The receiver section of
the acoustic coupler/modem consists of a buffer,
bandpass filter, limiter, mark and space filters, difference integrator, data filter, carrier detector, and
carrier detect delay circuits. The microphone is
connected through the buffer (a high gain amplifier)
to a bandpass filter which passes in-band signals and
attenuates out-of-band signals and noise, thus providing some selectivity. The output of the bandpass filter
is applied to the limiter which provides a constant
amplitude signal to the mark and space filters. The
mark filter's greatest output occurs when the mark
frequency is received, and the space filter's greatest
output occurs when the space frequency is received.
1
RCV
One muff contains a microphone; the other, a
speaker. The interface is entirely acoustic.
The modem (available as an option only on the Model
743) interfaces directly with the telephone line via a
transformer contained within a data coupler (DAA)
required to connect the modem to the telephone line.
A block diagram of the acoustic coupler/modem is
shown in Figure 3-45. A schematic of the circuitry is
contained in the appendix.
The output of the mark and space filters is appl ied to
a difference- integrator which determines which filter
has the most output over a bit time. The difference
integrator's output is applied to the data filter and
carrier detect circuit. The data filter smoothes the
Note that the modem and acoustic coupler share
most of the same circuitry; for this reason the
r---------------------------------------------------
r----~OPHONE 1
I
t>-......
'
I
MODEL 745
! ACOUSTIC COUPLER
I
I
I
I
I
I
-...&00...
HALF DUPLEX MODE
RECEIVED DATA
_
CARRIER DETECT
MODEL 743 MODEM OPTION
(ASSEMBLY 937300)
DATA
DT} MODEL 743 MODEM OPTION
TRANSMITTER
DR
I
I
I
I
I
------------,
I1..__
AOO01270
SPEAKER
MODEL 745
ACOUSTIC COUPLER
Figure 3-45. Acoustic Coupler/Modem Block Diagram
3-41
I
I
I
I
I
I
...
The difference integrator circuitry determines which
filter has the most output over a bit time. The
outputs of the mark and space filters are subtracted
by CR413, R476, CR416, and R479 and by CR415,
R481, CR414 and R474. When a mark is received,
the output of U410 (pin 1) is in positive saturation;
similarly, when a space is received U410 (pin 1) is in
negative saturation. Under no-signal conditions, the
output of U410 is nominally zero volt.
difference integrator output and converts the signal
to ±1 G-volt levels. The carrier detect circuit determines whether an in-band or out-of-band signal is
present at the input of the receiver.
An in-band signal starts a 3-to-7-second delay in the
carrier detect delay circuit before it provides a valid
carrier indication to the terminal and enable transmitter circu it. An out-of-band signal starts a 100- to
3OG-millisecond delay before a no-carrier indication is
provided to the terminal and transmitter.
The data filter stage, R455, R554, and C413, form a
low-pass filter which removes any carrier frequency
signals still present on the output of the difference
integrator. The remaining components of the data
filter (U410, R454, and R453) constitute a comparator with hystersis. The output of U410 (pin 7) is in
negative saturation for a mark and in positive saturation for a space.
On assembly 937300 only, jumper E425/E426 provides a long or short carrier detect delay. Installed,
the delay is 3 to 7 seconds. If not installed, the delay
is 1 to 2 seconds.
The signal input to the acoustic coupler is an audible
tone emitted by the telephone handset. This FSK
signal is converted to an electrical signal by the
microphone. The incoming signal then is amplified by
the buffer amplifier (U413, R501, R500, and R495)'
the gain of which is determined by R501 and R495.
On assembly 937300 only, the receive-data signal is
held in the mark condition whenever the carrier
detect delay output signal is off (-12 volts), indicating absence of a valid carrier signal.
3.11.1.1 Carrier Detect. The carrier detect circuit
determines if a valid FSK signal is being received. The
carrier detect circuit receives its input signal from the
output of the difference integrator (U410, pin 1)
which is +10 volts or -10 volts when a signal is
received or zero volts when no signal is received.
The signal then goes to a three-stage stagger-tuned
bandpass filter which amplifies in-band signals and
attenuates out-of-band signals and noise. The first
stage of the filter (U413, R491, R494, R502, C428,
and C427) has a nominal center frequency of 2345
Hz, a gain of 14 dB and a Q of 5. The second stage of
the bandpass filter (U407, R489, R490, R450, C418,
and C417) has a nominal center frequency of 1915
Hz, a gain of 14 dB, and a Q of 5. The last stage of
the filter (U406, R446, R429, R445, C412, and
C411) has a nominal center frequency of 2125 Hz, a
gain of 3 dB and a Q of 5.
Under a no-signal condition U404 (pin 1) is +10 volts
since U404 (pin 2) is pulled to -12 volts through
R423, and U404 (pin 3) is at zero volts. When the
output of the difference integrator exceeds +2 volts,
the input (U404, pin 2) becomes more positive than
pin 3 (U404), and the output (U404, pin 1) switches
to -10 volts.
The composite filter response yields an overall gain of
25 dB with relatively linear phase characteristics and
a 30G-Hz bandwidth. The linear phase characteristics
contribute to equal mark and space frequency delays.
Similarly, when the output of the difference integrator ranges between the negative saturation voltage of U410 (pin 1) and -5 volts, the noninverting
input of the carrier detect op-amp (U404, pin 3) is
more negative than the inverting input (U404, pin 2),
so the output switches to -10 volts. To prevent a loss
of carrier indication while receiving data during which
the output of the difference integrator is switching
between +10 and -10 volts, the voltage stored on
C409 and C404 (in conjunction with the RC time
const~nds of C409, R422, and R424 or C404, R402,
and R403) are sufficient to prevent the output of
U404 (pin 1) from switching to a no-carrier condition
(+10 volts)_
The limiter (U406, R442, R444, CR408, CR409)
produces a constant amplitude (±0.7 volt, peak-topeak) input signal for the mark and space filters by
limiting the positive and negative excursions of the
output with CR408 and CR409.
The bandwidth of the incoming signal at 300 baud is
300 hertz, centered about the carrier frequency of
2125 Hz (1750 Hz for CCITT). To receive signals of
this bandwidth, the mark filter is nominally tuned to
2275 Hz, and the space filter is tuned to 1975 Hz.
Both filters have equal gains, and the envelope delay
at the center frequency of each filter is equal.
• 3-42
3.11.1.2 Carrier Detect Delay. The carrier detect
delay circuit generates the appropriate energizing and
de-energizing delays required by the term ina!. A -10
volt signal from U404 (pin 1) indicates that a valid
carrier is present. Since CR405 is reverse biased,
capacitors C410 and C432* are charged to -10 volts
through R426. An electronic jumper installed at
E425-E426* provides normal turn-on and turn-off
delays. With the E425-E426 jumper removed, shorter
delays are provided_ (Only the standard 3 to 7 second delay is available on PWB 983841.) R426, along with
C410 and C432, determine the turn-on time of 3 to 7
seconds. With the short delay option (available only
on PWB 937300) the turn-on time is 1 to 2 seconds.
When the voltage across C410 is less than the -7.5
volt threshold of the comparator formed by U404,
R404, R405, and R406; its output switches to +10
volts, indicating the presence of a val id carrier.
+5 volts through R22. Thus, U415 (pin 7) is in
negative saturation (-10 volts), causing CR425 to be
forward-biased. This then forces, or clamps, the
output of the difference integrator U410 (pin 1) to
+10 volts, regardless of the receiver input signal. This
causes the receive-data signal to be held in the mark
condition, and holds the carrier detect signal on.
When the transmit-data signal returns to the mark
condition, U405 (pin 1) switches to +10 volts. This
turns off CR428 and permits C431 to discharge
toward +10 volts through R473 and R488. The
output of U1 (pin 8) switches to ground, causing
0551 to turn off. This pulls U415 (pin 5) to +12
volts through R499 since CR426 and CR427 turn off.
This causes U415 (pin 7) to switch to +10 volts,
which turns off CR425, freeing the difference integrator and allowing it to switch with the incoming
signal.
When the output of the carrier detect circuit (U404,
pin 1) is +10 volts, C410and C432 discharge through
R425 and CR405. R425, along with C410 and C432,
determine the turn-off time of 100 to 300 milliseconds (50 to 100 mill iseconds with the short delay
option). When the voltage across C410 is more
positive than -4 volts, the comparator output
switches to -10 volts, indicating absence of a val id
carrier.
When the terminal is in the full-duplex mode, the
output latch U25 (pin 7) is off and held near ground.
Thus, since the noninverting input of U415 (pin 5)
never falls below ground, the output of U415 (pin 7)
always is +10 volts, which turns off CR425, effectively disabling the circu it during full-duplex.
3. 11.2 TRANSMITTER SECTION. The transmitter
section consists of an FSK transmitter, including
transm it-inhibit circuitry, a low-pass filter, a transmit-level adjustment, and hybrid.bridge circuits.
*NOTE
Carrier detect delay jumper E425-E426
and capacitor C432 are supplied on PWB
937300 only.
The FSK transmitter is a triangular-wave oscillator
which oscillates at one of the two FSK frequencies
selected by the digital transmit-data signal. The
transmitter is enabled to oscillate only after a valid
carrier is present and the carrier detect signal is on.
The low-pass filter removes the higher order harmonics present in the triangular wave. The low-pass filter
output is connected through the output level adjustment to the hybrid bridge.
3.11.1.3 Receive-Data Clamp (Not Available with the
CCITT Option). The receive-data clamp circuit is
provided to eliminate the effects of erroneous receive
data caused by the transmitter second harmonic
frequencies overlapping the bandwidth of the receiver. This circu it forces, or clamps, the receive-data
signal to a mark condition whenever the transmit-data
signal is in a space condition. The circuit is enabled
only when the terminal is in the half-duplex mode.
When the PWB is configured as an acoustic coupler
(Model 745), the hybrid bridge is used as a buffer
amplifier to drive the speaker. When the PWB is
configured as a modem (Model 743 option), the
hybrid bridge permits the FSK transmit data to be
applied to the telephone line via the DT and 0 R
leads. I n the modem configuration the received FSK
data also is present on the DT and 0 R leads since it is
a two-wire full-duplex system. The hybrid bridge not
only applies the received FSK signal to the receiver
input (as indicated by the dashed line on Figure
3-45), but it also isolates the transmitter section from
the receiver section.
With a -10 volt level at U405 (pin 1), the transmitter
is in the space condition. Thus, CR428 is forwardbiased, and C431 charges toward -10 volts through
R473. Buffer amplifier U415 (pin 1) tracks the
capacitor voltage towards -10 volts, which causes the
output of U1 (pin 8) to switch to +5 volts. This turns
on 0551, which causes CR426 and CR427 to turn
on, bringing U415 (pin 5) to approximately +1.5
volts. If the terminal is in the half-duplex mode, the
output latch U25 (pin 7) is turned on and pulled to
3-43
The transmitter is enabled and disabled using the
carrier detect signal present at U404 (pin 7). When a
valid carrier is present, U404 (pin 7) is +10 volts
which turns on 0406 and turns off 0407. This enables the comparator U412, thus enabling the transmitter. While carrier detect is off, U404 (pin 7) is
-10 volts, forcing 0406 off and 0407 on, which
disables U412 and the transmitter.
For purposes of discussion, assume that the output of
U412 (pin 7) of the FSK transmitter is at -12 volts.
CR412 is reverse biased, and CR411 is forward
biased. A -4.3 volt reference (-6.3 volts on PWB
983841) is established by CR420, CR417, and
CR419. The constant negative voltage at the input of
the integrator (U407, C416, and the series combination of R472 and R448) causes the output (U407,
pin 7) to ramp linearly positive with time.
3.11.2.1 Transmit Low-Pass Filter. The triangularwave output of the transmitter section is altered using
a low-pass filter to lower the distortion by attenuating all harmonics of the fundamental frequency. The
resultant output is a sine wave of approximately ±9
volts peak-to-peak.
When the output passes +4.3 volts (+6.3 volts on PWB
983841), the noninverting input of U412 is slightly
positive because of the voltage divider formed by
R487 and R485 between the negative reference and
U407 (pin 7).
3.11.2.2 Transmit Level. The output of the low-pass
filter is applied through a 10k ohm potentiometer
which determines the output transmit level. U414
(pins 1, 2, and 3) forms a buffer to drive either the
speaker (acoustic coupler) or the duplexer (modem).
The positive voltage at U412 (pin 2) causes the
output to switch to +12 volts, and a +4.3 volt reference (+6.3 volts on PWB 983841) is established by
CR421, CR417, and CR418 at the input to the
integrator. The integrator now ramps linearly negative
until the output is slightly less than -4.3 volts (-6.3
volts on PWB 983841). The noninverting input of
U412 is now slightly negative, so the output switches
to -12 volts, and the cycle starts again.
The duplexer (U414, pins 5, 6, and 7; R496, R498,
and R499) provides the appropriate driving and
term inating impedances to match the modem to the
data access arrangement (DAA). The duplexer also
provides isolation between the transmitter and receiver of the modem to prevent a strong transmitted
signal from swamping a sl)1all received signal. Backto-back zener diodes (CR422, CR423) act as clippers
to protect the DT and DR leads from high voltage
spikes.
In order to change the frequency of the oscillator, a
shunt resistor (R447) is switched across the series
combination of R472 and R448 by 0405. 0405 is
switched on and off by the output level present at
U405 (on during the mark frequency, off during the
space frequency).
3-44
SECTION 4
MAINTENANCE
4.1 PREVENTIVE MAINTENANCE.
The printhead should be cleaned as instructed above
each time a new roll of paper is loaded into the
printer. Clean the printhead more often if the printed
images start to fade as a result of residue accumulating on the printhead.
The TI Models 743/745 Data Terminals are designed
and built to provide long term trou ble-free operation
under rigorous operating conditions. To ensure continuation of the highest performance levels, the
machine should be cleaned at regular intervals. The
printer mechanism and printhead should be kept
clean and free of foreign objects.
4.2 TROUBLESHOOTING.
1.
Remove the thermal paper from the
platen and paper chute. If necessary, cut
the paper where it enters the chute. Press
and hold the PAPER ADV key until the
short piece exits the window/pinch roller.
Troubleshooting data terminal malfunctions is
fac il itated by use of the flow diagrams starti ng on
page 4-12 to help localize failures to a particular
assembly. When one or more subassemblies are
removed during the trou bleshooting process, each
suspected subassembly should be reinstalled, one at a
time, to verify it is indeed the cause of the failure.
But in the case of a catastrophic failure, such as
blown fuses, overheated or burned components, or
other obvious physical defects, return the subassembly to the factory for repair and skip the
verification step described above.
2.
On a sheet of good quality bond paper,
wet a 2- inch wide area with denatured
alcohol (available from TI in pint containers, Part No. 230007).
NOTE
The troubleshooting diagrams are intended for use by trained service personnel.
3.
Insert the alcohol-wetted paper through
the paper chute, around the platen, and
under the window/pinch roller. Use the
PAPER ADV key to advance the bond
paper.
To ensure that the printer mechanism continues to
provide maximum print quality, the printhead should
be cleaned periodically as follows (refer to Figure 4-1
for location of components):
4.
4.3 ADJUSTMENTS.
The Models 743/745 Data Terminals have only two
field adjustments in normal use: print CONTRAST
control and the coupler TRANSMIT LEVEL control.
All other adjustments are completed at the factory
and should not be changed.
Type four to six lines on the alcoholwetted area. Use the R EPT key to
accelerate the process. Then advance the
paper to a dry area and type two more
lines.
4.3.1 PRINT CONTRAST. To adjust print image
contrast, locate the CONTRAST potentiometer
clearance hole on the right side of the terminal. Insert
a small screwdriver through the clearance hole and
gently rotate to seat the screwdriver in the screw slot.
NOTE
The thermal printhead will not print
visibly on conventional paper.
5.
a.
To darken the printed image, slowly
rotate the adjustment screw clockwise
while printing characters from the keyboard until the desired contrast is
achieved.
b.
To lighten the printed image, rotate the
adjustment screw counterclockwise.
Press and hold the PAPER ADV key to
remove the cleaning paper and reload the
thermal paper supply.
4-1
PRINTHEAD
ADJUST WHEEL
LINE FEED
SOLENOID
MECHANISM
SUPPORT POST
PLATEN
PRINTHEAD
PRINTHEAD
MOUNTING
SCREWS
MECHANISM
SUPPORT POST
a. Unit With Solenoid-Driven Line Feed Mechanism
P1000027
LINE FEED MOTOR
PRINTHEAD
SOLENOID ADJUST
WHEEL (UNDER PLATEN
DRIVE PULLEY)
b. Unit With Motor-Driven Line Feed Mechanism
(All other components are similar to Figure 4-1a.)
Figure 4-1. Models 743/745 Component Locations
4-2
4.3.2 ACOUSTIC COUPLER OR MODEM TRANSMIT ADJUSTMENT. This adjustment controls the
transmit level of the signal applied to the tel~phone
line. The transmit level is adjusted at the factory to
produce -15 dBm (0 dBm = 1 mill iwatt dissipated in a
600-0hm load) on the telephone line after passing
through the telephone handset from the acoustic
coupler or -9 dBm after passing through the COT
DAA from the modem.
Data Terminal
Serial No.
to compensate for unusual conditions by adjusting
the transmit level.
The transmit level may be adjusted to accommodate
different handsets and telephone systems as follows:
Locate the TRANSMIT LEVEL potentiometer clearance hole on the left side of
the termi nal. Insert a small screwdriver
through the clearance hole and gently
rotate to seat the screwdriver in the screw
slot.
b.
Establish contact with a remote terminal.
c.
Slowly rotate the TRANSMIT LEVEL
adjustment screw clockwise until the
terminal begins to receive garbled data
from the remote source. Reduce the level
sl ightly to achieve error-free reception.
Used
OX743YYYYYand
OX745YYYYY
Solenoid-actuated line
feed - Part No. 983811
OX744YYYYYand
OX746YYYYY
Motor-driven line
feed - Part No. 999257
4.3.3.1 Printhead Pressure Adjustment (Mechanism
Part No. 983811).
The transmit level is factory-cali brated for optimum
performance wi th most U.S. telephone systems.
However, since handset quality differs and line losses
occur in some telephone systems, it may be necessary
a.
Mechanism
4.3.3 PRINTER SUBSYSTEM ADJUSTMENTS.
Under normal operating conditions, the closed-loop
control circuitry of the printer subsystems will
compensate for friction changes caused by wear,
temperature variations, and component aging., No
field adjustments are required except alignment of .
the thermal printhead after replacement of the
mechanism or printhead assembly. If print quality
deteriorates, do not attemp~' adjustments until the
cause is fully understood.
a.
Remove the inner cover from the terminal as instructed in paragraph 4.4.3
below.
b.
the
printhead
Manually
position
approximately 4 inches from the left
margin.
c.
Manually compress the printhead solenoid (Figure 4-2a) so that the solenoid is
in the fully energized position.
d.
Place a measuring scale along the solenoid
Iinkage and measure the travel distance.
e.
Adjust solenoid travel to at least 0.04
inch but no greater than 0.05 inch by
rotating the knurled wheel at one end of
the solenoid. (Rotate the wheel clockwise
to increase travel, counterclockwise to
decrease travel.)
f.
Repeat step e. several times to ascertain
that the adjustment is correct.
4.3.3.2 Printhead Solenoid Adjustment (Mechanism
Part No. 999257).
Two versions of the printer subsystem are used on
Model 743/745: one version (983811) employs a
solenoid-actuated line feed; the other version
(999257) is equipped with a motor-driven line feed.
Both versions use a solenoid-actuated printhead pressure mechanism, but the solenoids are mounted and
linked to the printhead pressure bar differently. The
two versions may be differentiated as follows.
4-3
a.
Remove the inner cover from the terminal as instructed in paragraph 4.4.3 below.
b.
Manually position the printhead approximately 4 inches from the left margin.
c.
Manually compress the printhead solenoid (Figure 4-2b) so that the solenoid is
in the fully energized position.
d.
Place a measuring scale atop the printhead pressure bar (F igure 4-3), perpendicular to the platen. Release the printhead
solenoid and measure the printhead pressure bar travel.
SENSOR CONNECTOR (J1)
ACOUSTIC COUPLER CONNECTOR PINS (J401, J402)
PRINTHEAD MOTOR CONNECTOR (J201)
FAN CONNECTOR (J302)
PRINTHEAD
CARRIAGE WHEEL
PRINTHEAD
PRESSURE BAR
KEYBOARD
a. Unit With Solenoid-Driven Line Feed Mechanism
PRINTHEAD SOLENOID ADJUST WHEEL
b. Right-Side View of Motor-Driven Line Feed Mechanism
Figure 4-2. Module Connectors and Printhead Components
4-4
P1000028
FLEX CABLE CLIPS
PRINTHEAD FLEX CABLE
INTHEAD CARRIAGE
ROD SUPPORT BEARING
CLAMPING SCREW
(ONE EACH SIDE)
Figure 4-3. Printhead Adjustment and Components
4-5
e.
Rotate the knurled wheel at one end of
the solenoid to obtain a pressure bar
movement between 0.020 and 0.045
inch. (Rotate the wheel clockwise to
increase travel, counterclockwise to decrease travel.)
attempting any internal disassembly procedures.
4.4.1 OUTER COVER REMOVAL (MODEL 745
ONLY).
a.
f.
Repeat steps d and e several times to
ascertain that the adjustment is correct.
~
b.
The mechanism incorporates adjustments
for both head force and head lift. Head
force is preset at the factory and should
never need adjustment throughout the
mechanism life.
b.
c.
Slowly lift the outer cover up and off the
terminal.
4.4.2 OUTER COVER INSTALLATION (MODEL
745 ONLY).
4.3_3.3 Printhead Position Alignment (Both Mechanisms). After installing a new printhead, check a
printed line of zeroes (0). If the tops or bottoms of
the "0" are missing anywhere along the printed line,
correct as follows by repositioning the printhead
carriage rod support bearings at each end of the
mechanism (see Figure 4-3).
a.
Place the terminal in its normal operating
position on a table and release the four
latches (two on each side) that secure the
outer cover.
a.
Position the bottom rear edge of the
outer cover into the base rear groove at
an angle and lower the outer cover,
engaging the front edge and groove.
b.
Close the four latches.
4.4.3 INNER COVER REMOVAL. (Both Models)
Loosen the screw that clamps the bearing
to the frame. Move the bearing up if the
bottom of the letters are missing; move
down if the tops are missing. Independently adjust each end for the condition
observed.
a.
Unplug the ac power cord and communications cable (if present) from the
rear of the terminal.
b.
Place the terminal upside down on a
padded work surface.
After adjusting, verify that the printhead
carriage does not rub against the frame
and that the top of the printhead does
not interfere with the window/pinch
roller.
c.
Remove the four 4-40 X 1 inch recessed
screws which secure the base to the inner
cover.
d.
Manually grasp the cover and base together and turn the terminal right side up.
e.
Lift up the inner cover about 3 inches
and rotate toward the rear of the base;
then unplug the mtcrophone and speaker
(Model 745 only) from the printed wiring
board (PWB). The inner 'cover is then
free.
Retighten the clamping screws and type
several more Iines of zeros to recheck
printing quality. Readjust as necessary.
4.4 SUBASSEMBLY REPLACEMENT.
The modular-design subassemblies may be easily
removed to facilitate repair or replacement. Figures
4-1, 4- 2, and 4-3 show the important modules and
their attachment and plug-in points. Detailed procedures are contained in the following subsections.
4.4.4 INNER COVER INSTALLATION
Disconnect the data terminal ac power
cord from the wall receptacle before
4-6
a.
Set the inner cover on its back at the rear
of the data termi nal.
b.
Connect the two telephone muff
assembly cables (Model 745 only) to the
PWB.
c.
Verify that the fan, mechan ism, printhead, and keyboard cables are connected
to their PWB connector pins (see Figure
Grasp the connectors only by their plastic
bodies when disconnecting. Do not pull
on the wires. Needle-nose pliers may be
used if more convenient.
4-2).
d.
Verify that the power cord receptacle IS
inserted In its groove in the base.
e.
Lower the front of the inner cover,
keeping cables and wires off the heatsink
and away from the fan blade.
f.
g.
f.
4.4.6 MECHANISM INSTALLATION.
Guide the paper compartment rear wall
(on the inner cover) into the slot at the
bottom rear of the mechanism paper
supply roll compartment.
Verify that the sides, front, and rear of
the cover are engaged in their respective
grooves in the base.
h.
Grasp the cover and base together and
turn the unit upside down.
i.
Install four 4-40 X 1 inch screws through
the base and ti ghten.
a.
Verify that the spnng spacers are seated
atop each of the four mechanism mountIng posts.
b.
Hold the mechanism above the PWB and
connect the printhead connector to J 1 01
on the PWB.
c.
b.
c.
d.
e.
Route the motor and sensor cables under
the mechanism and behind the left rear
mounting post.
d.
Connect the sensor cable (three wires) to
J1 and the printhead drive motor cable
(four wires) to J201 on the PWB. Connect the printhead solenoid to J251 and
the tine feed solenoid or stepping motor
to J252 on the PWB. Connect the mechanism ground cable.
e.
Lower the rear mechanism slots over the
rear mounting posts and press down the
mechanism to engage posts. Pull the
mechanism forward to engage the front
slots and mounting posts and press down
to engage the front posts.
4.4.5 MECHANISM REMOVAL.
a.
Lift the mechanism from the terminal.
Check that the ac power cord and communications cable are unplugged from the
rear of the terminal and remove the inner
cover as instructed in paragraph 4.4.3.
Release the rear of the mechanism by
pressing the two rear mechanism support
posts (Figure 4-1) inside the paper supply
compartment toward the front of the
terminal.
4.4.7 KEYBOARD REMOVAL.
Lift the rear of the mechanism sufficiently to clear the two rear posts and
slide the mechanism forward to center
lhe front posts in the mechanism slots.
Lift the entire mechanism approximately
4 inches and unplug the pn nthead connector (J101) from the PWB. The connector is located beneath the mechanism.
Disconnect the four connectors and the
ground connector (located beneath the
solenoid) from the PWB.
4-1
a.
Remove the Inner cover as instructed In
paragraph 4.4.3.
b.
Remove the keyboard bezel (Figure 4-1)
by relieving the snap-on posts on the left
and right ends of the keyboard and bezel.
c.
Press the keyboard assembly toward the
rear of the terminal until the three front
retarner clips are free of the keyboard.
d.
Lift the front of the keyboard assembly
up and sl ide the keyboard assembly
forward off the terminal.
e.
Disconnect the flexible cable from the
top right rear of the keyboard.
4.4.11 PWB INSTALLATION. PWB installation is
accomplished by reversing the order of removal.
4.4.8 KEYBOARD INSTALLATION.
a.
Lay the keyboard in front of the terminal
and connect the keyboard flex cable
connector (Figure 4-2) to the keyboard.
b.
Lift the keyboard and insert the rear edge
into the three rear keyboard clips of the
base while gently folding the cable
beneath the key board.
c.
Push the keyboard toward the rear of the
terminal until the front clips of the base
are clear. Lower the front edge of the
keyboard and release, inserting the front
edge into the three front clips.
d.
Pay particular attention to the jumper
plugs and the option PROM to ensure
that the PWB replacement configuration
is accurate. If there is any question of the
correct configuration, refer to Table 4-1
for the jumpers needed for a particular
configuration. See paragraph 4.4.14 for
the option PROM replacement procedure.
4.4.12 PRINTHEAD REMOVAL. Refer to Figures
4-1, 4-2, and 4-3 for location of printhead components.
Install the keyboard bezel by pushing
down on the bezel until the two end
posts snap into place.
a.
Remove the inner cover as instructed in
paragraph 4.4.3.
b.
Remove the mechanism assembly from
the terminal (see paragraph 4.4.5).
c.
Remove the clip that secures the printhead flex cable to the front edge of the
mechanism.
d.
Loosen the two screws which retain the
printhead to the printhead carriage
assembly.
e.
Wh ile Iifting up on the printhead
assembly, pull back on the printhead
assembly.
f.
Gently remove the printhead assembly.
(If the printhead will not come off,
repeat steps d and e).
4.4.9 FAN REMOVAL AND INSTALLATION.
a.
Unplug the fan cable connector from the
PWB at J302 (Figure 4-2).
b.
Loosen both fan bracket screws.
c.
Slide the fan motor and blades forward
and out of the bracket.
To install the fan complete the above steps in reverse
order. Rotate the fan blades manually to ascertain
freedom of movement: move the fan as needed.
4.4.10 PWB REMOVAL.
a.
Remove the inner cover (paragraph
4.4.3),
keyboard (paragraph 4.4.7),
mechanism (paragraph 4.4.5), and the
mechanism mounting post springs and
spacers.
b.
Slide the ac power receptacle out of its
mounting slots.
c.
Remove the PWB by lifting it straight up.
4.4.13 PRINTHEAD INSTALLATION. Refer to
Figures 4-1, 4-2, and 4-3 for location of printhead
components.
4-8
a.
Secure the pdnthead carriage
against the printhead pressure bar.
wheel
b.
Slide the printhead into position onto the
printhead carriage, ascertaining that the
plastic pins fit into the holes in the
printhead assembly.
Table 4-1. Models 743/745 Optional Internal Electronics Jumpers
Use
Signals
PWB Jumper Points
+30V (SUPPLY) to +30V (LOAD)
E311-E314, E312-E315
+5V (SUPPLY) to +5V (LOAD)
E325-E326
POWER
+5V (SENSE) to +5V (LOAD)
E307-E308
SUPPLY
-5V (SUPPLY) to -5V (LOAD)
E329-E330
JUMPERS
-12V (SUPPLY) to -12V (LOAD)
E321-E322
+12V (SENSE) to +12V (LOAD)I
E304-E305
3STANDARD
+12V (SUPPLY) to +12V (LOAD)I
E317-E318
OVERVOL TAGE PROTECTION 2
E382-E383
XMTD to XMIT DATA
E403-E406
PORTABLE
RCVD to RCVDAT A
E402-E405
INTERNAL
CDET to CARDET
E401-E404
I
1
2
JUMPERS
743 KSR
(HYBRDG) to (MIC)
E415-E416
W/MODEM
SGND to DR
E413-E414
OPTION
PARITY
4SIGNAL GROUND/
CHASSIS GROUND
OPTION
EVEN (STANDARD)
NO JUMPER
ODD
E74-E76
MARK
E74-E76, E75-E77
SPACE
E75-E77
}
SIGNAL and CHASSIS
GROUNDS ISOLATED (STANDARD)
SIGNAL GROUND TO CHASSIS GROUND
SCARRIER DETECT
DELAY
E366-E367
E365-E366
LONG (STANDARD) 3to 7 SECONDS
E425-E426
SHORT 1 to 2 SECON OS
NO JUMPER
NOTES
1 Available
only on Electronics PWB 983841.
2 Available only on Electronics PWB 937300.
3 Not installed on Model 745 with Auxiliary Coupler option.
4 Available only on Electronics PWB 983841, Rev. S and later.
SShort carrier detect delay option and jumpers E425-E426 are available only on Electronics PWB 937300.
c.
d.
Tighten the two screws that retain the
printhead assembly.
Adjust printhead pressure as instructed in
Verify satisfactory operation between the
printhead carriage wheel and the printhead pressure bar. Install the mechanism
in the terminal as instructed in paragraph
paragraph 4.3.3.
4.4.5.
e.
Lay the flex cable under the printhead
with a rolling loop to the left as shown in
Figure 4-3.
f.
Attach the flex cable clip onto the
mechanism and the flex cable.
g.
h.
Adjust printhead position alignment as
instructed in paragraph 4.3.3.2.
4.4.14 OPTION PROM REPLACEMENT. The Option
PROM may contain coding for the Answer Back
Memory (ABM) option, or the Full-ASCII keyboard
4-9
since the ABM message may be unique for each
terminal.
option, or APL keyboard option, or Full-ASCII and
APL with ABM. The ABM option (only) and APL
(with or without ABM) use an SN74S471 (256 x 8)
PROM. The Full-ASCII keyboard option (with or
without ABM option) uses an SN74S472 (512 x 8)
PROM.
Since the option PROM's are factory-programmed,
replacements must be ordered from the factory or a
local TI Field Service office. An order for an ABM
option PROM must specify the ABM message desired.
A label listing the unique customer-specified ABM
message is attached to the inside 3urface of the inner
cover (between acoustic coupler muffs on the Model
745 and in a similar position on the Model 743). The
ABM message must be at least one character and not
exceed 21 characters. PROM and keyboard replacement part numbers for ordering purposes are listed in
Table 4-2.
When the Option PROM is programmed only with the
Full-ASCII keyboard, only one PROM is supplied,
installed at network location U12. If the option
PROM is programmed with the ABM option, two
identical PROM's are supplied: one in use at network
location U 12 and a spare installed at network
location U30. Two ABM Option PROM's are supplied
Table 4-2. Keyboard Kit and Option PROM Replacement Part Numbers
TI Part Number (Use 6-Digit Part No. Plus 4-Digit Dash No.)
Keyboard Kit 1
984037 Plus. . •
Option
Replacement PROM
983941 Plus. . .
Without
With
Without
ABM
ABM2
ABM
With
ABM2
Receive-Only Panel Kit
989734 Plus . • .
Without
ABM
With
ABM2
Limited-ASCII (Standard)
-0001
-0101
N/R
-0101
N/R
-0101
Full-ASCII
-0002
-0102
-0002
-0102
-0002
-0102
APl/ASCIl
-0020
-0120
-0020
-0120
N/A
N/A
-0008
-0108
-0008
-0108
N/A
N/A
-0009
-0109
-0009
-0109
N/A
N/A
-0010
-0110
-0010
-0110
N/A
N/A
-0011
-0111
-0011
-0111
N/A
N/A
Katakana
3
Katakana with 200 Baud
Katakana
3
4
Katakana with 200 Baud
4
N/R = Not Required; N/A = Not Available
NOTES
IThe Keyboard Kit includes
2Specify ABM (answer-back
3 Used only with Electronics
4 Used only with Electronics
keyboard, PROM, and bezel.
memory) message with order.
PWB 983841.
PWB 937300.
4-10
P100030
Figure 4-4. Power Cord Storage- in 745 Outer Cover
4-11
ACOUSTIC COUPLER SYMPTOMS
• NO CARRIER LAMP
• NO COMMUNICATION WITH
TELEPHONE
POWER SUPPLY SYMPTOMS
• NOTHING WILL WORK
• FAN NOT RUNNING
• POWER ON, THEN OFF AGAIN
KEYBOARD SYMPTOMS
• STICKY KEYS
• KEYS DO NOT INPUT
• MULTIPLE INPUTS
LINE FEED SYMPTOMS
• HALF LINE FEED
• NO FULL LINE FEED
• 1\10 LINE FEED
• NO HEAD LIFT
PRINT QUALITY SYMPTOMS
• PRINTS CHARACTER WITH TOO
FEW OR TOO MANY DOTS
• PRINTS CHARACTER TOO LlGHTIDARK
• PRINTS BLURRED CHARACTERS
OVER HEATING SYMPTOMS
• HOT EXTERIOR
• NO AIR FLOW FROM EXHAUST
• OPERATION CEASES AFTER UNIT
WARMS UP
COMMUNICATION SYMPTOMS
• NO CARRIER LIGHT
• DATA ERRORS
• CARRIER LAMP, NO DATA
CARRIAGE SYMPTOMS
• SLOW OR SLUGGISH RETURN
• MULTIPLE RETURNS ON POWER-ON
• LACK OF MOVEMENT ON POWER-ON
• CHARACTERS TOO CLOSE TOGETHER
• LOSS OF CHARACTERS ON CR
• SMEARED CHARACTERS ON CR
• WON'T MOVE TO LEFT V1AtIGIN
ON POWER-ON
AOO01266
Troubleshooting Flow Diagrams
4-12
ACOUSTIC COUPLER COMMUNICATION
CHECKLIST
o
VERIFY AUDIBLE TONE ON TELEPHONE
HANDSET
o ~~~~~I~Z~~~~L
o
o
o
JUMPERS OR EXTERNAL
CHECK HALF DUPLEX KEY FOR CORRECT
POSITION
PUT ON LINE KEY DOWN
CHECK LOW SPEED KEY FOR CORRECT
POSITION
-NOTES
1. When replacing PWB 937300, transfer ROM at U10 to new PWB.
2. When replacing either PWB assembly (983841 or 937300). transfer PROM at U12 & U30, if installed.
A0001361
4-13
NO
REPLACE MECHANISM
LOOK FOR SHORTS UNDER
PWB AND BETWEEN
,MECI;IANISM, KEYBOARD,
ANOPWB
*See Note, page 4-13
AOOO1362
Troubleshooting Flow Di..,ams
-4~ 14
KEYBOARD CHECKLIST
o
o
o
RELEASE ALL ALTERNATE ACTION KEYS
(ON UNITS SO EQUIPPED)
CHECK BEZEL FOR FOREIGN MATERIAL
AND ALiGNM ENT
SET TERMINAL TO OFF-LINE
*See Note, page 4-13
A0001363
Troubleshooting Flow Diagrams
4-15
UNE FEED CHECKLIST
o
o
PRtNTHEAD PRESSURE ADJUSTED
CORRECTLY
VERIFY TERMINAL FREE OF PAPER JAMS
*See Note, page 4-13
AOQ01364
Troubleshooting FI,?w Diagrams
4-16
PRINT QUALITY CHECKLIST
o RELEASE ALL ALTERNATE ACTION KEYS
(ON UNITS SO EQUIPPED)
o SET THE TERMINAL TO OFF-LINE
o PAPER LOADED PROPERLY
LINE FEED OR CARRIAGE
MALFUNCTION
A0001365
*See Note, page 4-13
AOOO1365
Troubleshooting Flow Diagrams
4-17
OVERHEATING CHECKLIST
o
o
o
o
OBSERVE THAT TEMPERATURE IS EXCESSIVE
VERIFY THAT FAN IS RUNNING, IF NOT GO TO B
OBSERVE THAT TERMINAL OPERATES NORMALL Y,
IF NOT GO TO H
CHECK FOR OBSTRUCTION IN FAN BLADE
'See Note, page 4-13
A0001366
Troubleshooting Flow -Diagrams
4-18
COMMUNICA TIONS SYMPTOMS CHECK LIST
o
o
o
o
o
o
o
VERIFY THAT TERMINAL OPERATES IN
LOCAL MODE
VERIFY THAT CORRECT MODEM/EIA/TTY CABLE
INSTALLED PROPERL Y
VERIFY SIGNAL TO TERMINAL IS KNOWN GOOD
VERIFY TERMINAL IN ON-LINE MODE
VERIFY TERMINAL IN ALPHANUMERIC MODE
HALF DUPLEX CONTROL IN APPROPRIATE
POSITION
LOW SPEED CONTROL IN APPROPRIATE POSITION
YES
REPLACE KEYBOARD
PERFORM CHECKLIST
OPERATIONS
YES
A0001367
'See Note, page 4-13
A0001367
Troubleshooting Flow Diagrams
4-19
o
CARRIAGE CHECKLIST
o
o
o
o
CHECK THAT THE FAN IS RUNNING WITH POWER ON
ADJUST PRINTHEAD PRESSURE AND CARRIAGE
RETURN
LOOK FOR A PAPER JAM IN MECHANISM
VERIFY CARRIAGE MOVEMENT ON POWER UP
(IF NOT GO TO B)
YES
NO
NO
YES
YES
*See Note, page 4-13
AOOO1368
Troubleshooting Flow Diagrams
4-20
MAJOR ASSEMBLI ES AND PART NUMBERS
MODEL 745
MODEL 743
SIN OX743YYYYY
SIN OX744YYYYY
SIN OX745YYYYY
VERSION
VERSION
VERSION
996289·2
972674·'
COVER ASSEMBLY _ _ _---'=-_ _ _ _ _ _ _ _ _ 2200044·'
983808·'
972674·'
POWER~---
SIN OX146YYYYY
---------------------------
POWER
~--
VERSION
996289-2
~==::::~~=~=-.
983859·2
~
983833·1 (W/PRINTHEAD) _----::.........P""
983911·1 (W/O PRINTHEAD)
999264·1 (W/PRINTHEAD)
(W/O PRINTHEAD)
M~~~N:~I~~999257.1
PRINTER
- - MECHANISM -
983833·'
~~!i;;=::~~
-,-----=----
(PRINTHEAD)
983829·1
983841·2 (EIA/TTY)
983807·'
937300·2
(EIA/TTY)
_ _ _ _ _ _ _ _ 983807·2
*APL keyboard option
available only on
SIN 744 and 746
versions.
999239·'
COVER ASSEMBL Y
999264·' (W/PRINTHEAI::
999257·1 (W/O PRINTHEAi
(PRINTHEAD)
983829·1
937300·'
(W/MODEM)
983807·' - _ _ _ _ _
BASE
ASSEMBLY
_ _ _ _ _ _ _ 983807·2
APPENDIX
DRAWINGS AND LISTS OF MATERIALS
FOR THE MODELS 743 AND 745 ELECTRONIC DATA TERMINALS
TI Drawing No.
Drawing Hierarchy Block Diagrams:
For data terminal serial numbers OX743YYYYY and OX745YYYYY
For data terminal serial numbers OX744YYYYY and OX746YYYYY
Assembly Drawings and Schematics:
Model 745 Portable Data Terminal (U.S., 115 V)
Model 743 KSR Data Terminal (U.S., 115V)
Model 745 Portable Data Terminal (CCITT, 115 V) Model 743 KSR Data Terminal (CCITT, 115V)
Page
A-3
A-4
00983801R
00983802AD
00983805K
00983806M
A-5
A-9
A-12
A-15
Printing Mechanism wlPrinthead (Stepping Motor Line Feed Drive)
Printing Mechanism wlo Printhead (Stepping Motor Line Feed Drive)
00999264-000 1C
00999257-0001 F
A-18
A-20
Printing Mechanism wlPrinthead (Solenoid Line Feed Drive)
Printing Mechanism wlo Printhead (Solenoid Line Feed Drive)
00983833E
00983811AB
A-24
A-26
Terminal Electronics PWB (For Stepping Motor Line Feed Drive)
Schematic
00937300N
00937298D
A-30
A-46
Terminal Electronics PWB (For Solenoid Line Feed Drive)
Schematic
00983841AL
D0983842AB
A-56
A-74
Inner Cover, Model 745 (Round-Pin Power Connector)
Base Assembly, Model 745 (Round-Pin Power Connector)
00983808M
00983807-00010
A-85
A-88
Inner Cover, Model 745 (Rectangular Pin Power Connector)
Base Assembly, Model 745 (Rectangular Pin Power Connector)
009992390
00983807-0002D
A-90
A-88
Outer Cover, Model 745
00983809A
A-94
Cover, Model 743 (Round-Pin Power Connector)
Base Assembly, Model 743 (Round Pin)
009838590
00983807 -00020
A-96
A-88
Cover, Model 743 (Rectangular-Pin Power Connector)
Base Assembly, Model 743 (Rectangular Pin)
D2200044C
00983807 -00020
A-96
A-88
Paper Drive Motor (Stepping Motor)
Printhead Drive Motor (All Models)
Printhead Drive Feedback Sensor
Printhead Assembly
Fan Assembly
02200045B
00983812E
C0983814B
B0983829
C0983825B
A-l01
A-l03
A-l05
A-l07
A-l09
- CONTINUED -
A-l
Cable Drawings:
Shorting Plug for 745 w/Auxiliary Coupler
EIA/Auxiliary Coupler, Model 745
EIA Interface (to 103A), Model 743
Modem, for Model 743 w/Modem (COT DAA Interface Only)
Current Loop, Model 743, TTY Only
Bell Systems, 113A Interface, Model 743
EIA/Auxiliary Modem, Model 743
TI Drawing No.
Page
B0983846H
C0983847L
C0983848G
C0983849J
C0983850J
C0983854G
D0983855E
A-lll
A-113
A-115
A-117
A-119
A-121
A-123
NOTE
When ordering any parts for your data terminal, please
include the serial number of your unit. The serial number label is attached to the rear of the terminal next to
the power cord connector.
A-2
DRAWING HEIRARCHY BLOCK DIAGRAM
TERMINAL WITH SOLENOID
LINE FEED MECHANISM
SERIAL NOS 18X743 YYYYY (MODEL 743)
)X745 YYYYY (MODE L 745) ~
l
MODEL 743 KSR
DATA TERMINAL -115V
983802
983806 (CCITT)
MODEL 745 PORTABLE
DATA TERMINAL -115V
983801
983805 (CCITT)
l
BASE
ASSEMBLY
983807 -0001
~
OUTER COVER
ASSEMBLY
983809-0001
-
INNER COVER
ASSEMBLY
1
983808-000X
-
-
ELECTRONICS
PRINTED CIRCUIT
1
983841-000X
--
2
ROMS:
972459-0003
972459-0004
(TMS4700-ZA4703)
(TMS4700-ZA4704)
SCHEMATIC
983842
-
FAN
ASSEMBLY
983825
r--
BASE
ASSEMBLY
983807-0001
'---
COVER
ASSEMBLY
983859-000X 1
THERMAL PRINTiNG
PAPER; 100-FOOT ROLL
972603-0001
I
ACOUSTIC MUFFS:
RECEIVE: 983827
TRANSMIT: 983826
~
MECHANISM ASSEMBLY
(W/SOLENOID LINE FEED)
WITH PRiNTHEAD
983833
MECHANISM ASSEMBLY
(W/SOlENOID LINE FEED)
983811
POWER CORD
972674
OPERATING INSTRUCTIONS
MODEL 743: 984030-9701
MODEL 745: 984024-9701
PRINTHEAD
ASSEMBLY
983829
RECEIVE·ONl Y KIT:
LIMITED ASCII 989734-0001
FULL ASCII 989734-0002
KEYBOARD KIT
984037
I
I
LIMITED-ASCII KIT: 984037-0XOl
KEYBOARD 983992
BEZEL 983944
I
I
FULL-ASCII KIT: 984037-0X02
KEYBOARD 984036
BEZEL 984038-0001
2KATAKANA KIT: 984037-0X08
KEYBOARD 983994
BEZEL 999243
I
I
AOOO1623
I
I
OPTION PROM
983941-000Y WIO ABM
983941-010Y WITH ABM
(SEE TABLE 4-2)
NOTES
lWhere a dash number IS indicated as -OGOX, see the appropnate next assembly draWing for the correct dash number.
2 ROM set 972459-0005/972459-0006 (TMS4705/4706) is requ Ired when uSing Katakana Keyboard Kit 984037-0008.
A-3
I
DRAWING HEI RARCHY BLOCK DIAGRAM
TERMINAL WITH STEPPING MOTOR
LINE FEED MECHANISM
SERIAL NOS {OX744 YYYYY (MODEL 743)}
. OX746 YYYYY (MODE L 745)
MODEL 745 PORT ABLE
DATA TERMINAL -115V
983801
983805 (CCITT)
MODEL 743 KSR
DATA TERMINAL -115V
983802
983806 (CCITT)
I
BASE
ASSEMBLY
983807 -0002
-
fo--
OUTER COVER
ASSEMBLY
983809-0001
-
fo--
INNER COVER
ASSEMBLY
1
999239-000X
-
-
ELECTRONICS
PRINTED CIRCUIT
1
937300-000X
-
2ROM
996522-0002
(TMS4732-ZA3215)
----
SCHEMATIC
937299
FAN
ASSEMBLY
983825
BASE
ASSEMBLY
983807-0002
COVER
ASSEMBLY
1
2200044-000X
THERMAL PRINTING
PAPER; 100-FOOT ROLL
972603-0001
I
ACOUSTIC MUFFS:
RECEIVE: 983827
TRANSMIT: 983826
KATAKANA MUFFS:
RECEIVE W/STRAP
995671-0002
OVERSIZE TRANSMIT
W/STRAP 995670-0002
-
MECHANISM ASSEMBLY
(W/STEPPING MOTOR LINE FEED)
WITH PRINTHEAD
999264-0001
MECHANISM
ASSEMBLY
(W/STEPPING MOTOR LINE FEED)
999257-0001
PRINTHEAD
ASSEMBLY
983829
POWER CORD
996289-0002
RECEIVE-ONLY KIT:
LIMITED ASCII 989734-0001
FULL ASCII 989734-0002
LIMITED-ASCII KIT 984037-0X01:
KEYBOARD 983992
BEZEL 983944
KEYBOARD KIT
984037
FULL-ASCII KIT 984037-0X02:
KEYBOARD 984036
BEZEL 984038-0001
I
AOO01623
OPERATING INSTRUCTIONS
MODEL 743: 984030-9701
MODEL 745: 984024-97Q1
1 I
APL KIT 984037-0X20:
KEYBOARD 999416
BEZEL 984038-0002
r
OPTION PROM
983941-00YY W10 ABM
983941-01YY WITH ABM
(SEE TABLE 4-2)
NOTES
IWhere a dash number is Indicated as -OOOX, see the appropriate next assembly drawing for the correct dash number.
2 ROM PIN 996522-0003 (TMS4732-ZA3213) is required when uSing Katakana Keyboard "'It 984037 -001 O.
A-4
2KATAKANA KIT
984037-0X10:
KEYBOARD 983994
BEZEL 999243
•
116.
7
..-:'D
~:U~,,~:;'~I'U~
.....'II£TIHt.~n£~U
"I!\~ A~ ;;'~.L
11)
1\~\1't
00
la:.
1\ 1"6111£1\10 3.S!:.:S IN-LeoS
I
I(EVBOlRO ANi) INSERT lIRE
'1 ,... ::a~~1? ~I\IIU 6£ C· O":} ,...
'fII THWII15 WCIl :ill/tAL 15.N,,""'I'[,..EENCOTHltil ~ .. ~t:f 'NTr:T
NO jEII£~ <111' 745 myr;
~,~ fASl 5>0.... bE 0.000'"
&,..,
Iii
t_
u..-...
D
; TIGHTOt
6
HI
IS
FOR -OOO/~'OOO3 ITEM 15" WILL 8£ MARKED
pen
9 39231 -00/"3 !'""OR -00024-0004 ITEM 15 WII_L aE
MARKED PCR 999Z3l-1l014
ATTACH 6ROUND CA&£ F"RDNI L3~' TO ITeM:5 H.IM
TO IN!>TALLIN6 ITEM 1#
~"S.JRE
mIo.ITLCIIAL
P-he
ASS'" T£.
2}1!a
\NS'T~~Di"
JUO/IPU PLU6S,ITEM 1I,IIl5'ALL£ll DfI·OOO I
AS!.ENIIII.'f ONL~
1.
!] N'PL)
IlEM 15 TO IION'TElTURtD I'IftEl'l.
III KEf" WIU'> 00"'1 OF rAN AND OFF MEAT!>INIC. WHEN
1.!lTALLINC;- ITEM
~/E~i,f1G:,~~'t}t~!t,;
(NOTES ceNT SH
J30\ Of ... ~c
@:F~1~~r~~~I~w~ ~':.~~~Q~~i4f&"%Zi~':;,jN
c;..
/A)
e
PAR' NUM8ER
rESeRIProM
~83!!OI-OOOI
DtIoTA TERMINAL 745
!I131OHUIIIZ
OATA TERMINAL 74$ PORTABLE! J Iflft/ l.CPlR
PORTA8LEJSTAl'I
__
'O_ARD
__
H
DATA ITRMINI.L, 145 PORT, STANOAA:l,WlO "YBD
DATA TERMINAL, 745 PORT,W/AUX.CP!.R,W/C KY80
•
TOP
'-'C,V
I!II11N IIIltEIl COilE-it (ITEM &)
, _
DllTEIl
CDO'EIl
(ITEM 7)
_
,,£0 RJIt
t:LJftrlTr
~6cU.
A
-
__ """"
~=--
.
~=-~"
.... ~--.
.....
~=-
'.8CI1I1
..
-.:
L
_'
-- _
~
/
.~'
l
,..""----f""~·~m~~_n5~.
,383801'
~,&~,=,o~.====~~·!~m~rl5~!~m~i~·!~a~Il-~~~~~~~~~l-__l-__________-L~________-l~~!I::~::~;l~:I~~-•
-ao
' ,.&,.M
~. ~.:.r.
"IOTES
/3
COIVT
INSTALL ROM tlTrI,/38J I/T LOCATION
VIO ON THE TEffAl./NAL fLfCT1i'ONICS
(ITEM.?),
SECURE WIT/.{ KTV IITEiIJ.3~)
[g ~~~l~E~O~~{;~~
D
NOT 70 .HOI ON
D
USED ITEMS "10 TtI,rV 45'
IN PIAC[
ITEMS 1,2,3,b.B,(.?7
flESI'ECTfIIELY IILL OF ITEUS 40 THRf) 45
M!lST BE !lSED TOGETHEf: ) FIIKTS liRE
NOT IN7EKCH/INGElIlJLE:
ZI. ERf?lIfR
IINITS
or
-
-
c
c
B
B
-
A
A
e
I
7
I
6
I
5
j
4
I
3
121
'4
1
IR
7
1-::5::J=:=6~~~~
®V/
2
1'i14k£F
o
g:
5
l
·
13 REf:
,,,n'm
w
~
SECT/ON
o
8-B
seAL E' NON£:
4- PLACE 5
(2(0180· CW)
SHT 1 ZONt. c-"
c
CAI3L£/JU'.WH PLUG HOO
Dr_SCRIPTION
K-UP SC.HEDULE
c
DKIV,,-~pp~1-~oe'--+-1~=-::~---L~~OrI
peo,--- - _ .....
tl
(ITE M 3) M,)TOK
(ITEM 3) HEllO liFT
9
CiTE"" 3}lINE FEE
(iTEM 3)SEN50R D
5
()L
P2S1
MOTO~P2'2
B
8
20
o
.IEW L-[
$;.CRLE'N{JNE
A
5HT I ZO YE C-4,.orATED 3~'' CW
'i
A
LIST OF MATERIALS
Part No
Assembly
DATA TERMINAL, 745 PORTABLE, STANDARD, WIO KEYBOARD
DATA TERMINAL, 745 PORTABLE, W/AUXILIARY COUPLER, WIO KEYBOARD
Item
No,
0001
Quantity
EA
0983807-0002
Remarks
DeSCription
TI Part No.
00001.000
Rev
0983801 0003 R
0983801 0004 R
BASE ASSY,743/745.RECT CONTACT P.R CONN
0002
00001.000
EA
0937300-0001
TER~INAl
0003
00001.000
EA
0999264-0001
MECHANISM ASSY.STEPPER MOTOR, W/PRINTHO
ElECTRONICS.7431145
0005
00001.000
EA
0983825-0001
FAN ASSY
00001.000
EA
0999239-0001
COVER ASSY.INNER.7451165,W/XMIT ADJUST
~/~ODE~
0007
00001.000
0983809-0001
OUTER COVER ASSY
0009
00003.000
EA
0983905-0001
ClIP,KEYBOARD,fRONT
0010
00003.000
EA
0983904-0001
ClIP,KEYBOARD.REAR
0011
00003.000
EA
0912487-0001
JuMPER PLUG,CONNECTOR BLACK
0012
00004.000
EA
0983907-0001
SPACER.SPRING
0014
00001.000
EA
0983863-0001
BRACKET,fAN MOTOR
0015
00001.000
EA
0999231-0001
PLArE.
J016
00004.000
EA
0912988-0019
SCREW 4-40 X .150 PAN HEAD CRES
0017
00002.000
EA
0912679-0009
SCREW _4-20 X 3/8"LG THO FORM,HEX
0018
00002.000
EA
0411101-0057
lOCK~ASHER
0019
00004.000
EA
0419346-0342
HELICAL COMPRESS SPRING
0020
00001.000
EA
0983914-0001
~AMEPLATE,OUTER
0022
00001.0:)0
LABEl.SERVICE
IlJENTIF {CATION-BLANK
983903-1 CAN Bf USED AS AlT
0015A
_ 4
EXTERNAL TOOTH CRES
COVER
EA
0960141-0001
0023
REF
FA
0989481-9901
TEST PROCEUURE SIL 111 fiNAL TEST STA
0024
REf-
EA
0993816-9901
T~Sr
REF
0025
PROCEDURE,RUN-IN 143/745
EA
0984031-9901
TEST PROCtDURE,MANUAL 743/745
0027
00001.000
EA
0937304-0001
COVER, SAFETY
JOB
00001.000
EA
0937322-0001
TERM ACCtSS KIT, 745 PORTABLE, STD
EA
0984025-9701
MANUAL,MAINTENANCE,745/743
EA
0996522-0002
lC.fMS4732NL-lA3215,4096 X 8-81T ROM
TU
0417559-0001
SILICONE RUBBER IRTV) DOw 3140
BASE ASSY,1431145.ROUND CUNTACT PWR CONN
0035
RE:f-
0038
00001.000
0039
AR
0040
00000.000
EA
0983801-0001
00000.000
EA
0983841-0001
0040A
0041
USED ON EARLIER MODELS
0041A
0042
00000.000
EA
0983833-0001
MECHANISM ASSEMBLY wITH PRINTHEAD
00000.000
EA
0983808-0001
COVeR ASSV,WITH XMI lEVlL ADJUSTMENT
00424
0043
USED ON EARLIER MODELS
00434
0044
USED ON EARLIER MODELS
OOOOO.DOO
EA
0972674-0001
1)044A
0045
0045A
TERMINAL ELECTRONICS,745 w/ACOUSTIC CPLR
USED ON EARLIER MODELS
CABLE
~18
Awe
3 COND
PO~ER.[LECTRICAl
USED ON EARLIER MODELS
ODOOO.OOO
EA
0983911-0001
COVtR,SAFfTY
uSED ON EARLIER MODELS
A-8
for 00030nh
B
..
I
7
\
(CC'T""~E:D ~R:;'~
ifeN£:
'lAX
::~p 5c-'-.v£E".
~_ -=-'i'
N)"':S
J:(J8
~N
'6
o
fl.
E]
.5 :Y£
..... •
-~
t..,3:/V6
I-~·.I=':': TrRU.~
W£'i£
I
3
I
2
I
J,.;..)\,: ... .J C~3 ... E: CR..)M £!~ '-0
"3 ~\,);; TO I~STAL ...... I~"" IT\:::.M co
t:."-:--l":1-0
ie
=£
EAJ;_J~Fi
4
.:..c',"TUL..:.::-: Z.:'E >+
F:J.NER CCI;O .... tTE.tJ\ 8, =HIPPE~ L~IJ,;e:.
rJ1'~S
m
~V:;' !3~5E
-,--= __ BE Gee IN
T>!ERE -,"ALL BE
:::;0 ,N LIMIT
... ,tJ-ER~'- ..::,&p =E-,~ ~~N TI-I£ S
IN5ER- ":';:J ,5":5£ _-: \NCR CCVCR
iliERE -,-~_L BE
:::;: IN
Llh'IT -0
i"H£
r;~:, ,,_
~,.::= E~T.V£€N
TJ..I£ 5 ~=
I\S~"T
. ; a : 5A5£ C:
\JNER '::C\.£1i
'NS£"""
15
1
6
x>-";)
5J
IT&~l
T.GH''""' .) to,.",> ''''-
Q . . \G...... -:-i: ....
,\!:.
-'\.3:~ '5,~ l~~
UTI ~~:;it;;~ ['t:;~~~~ t·&[i~~cr;~~~h~-OOO2
-@'7~·[~32 ':.- ._.,. ~ ..
S~,;; 1_
::iESff; l~i__ ~j. -SJ.zRYls'" ;.;' =.is~.sy;yS;~~ 17£.1\1$ A~ . . 4',:: Z.7
13
(W-=:'3 C:,,'T "'"'T2.)
MAl(
S,DC
.)
GAP
BETWEEN ouTrR RIB ON
INSERT >'IND INNER ':OVER
5HIILL BE
.060 IN.
(/oJOies; CONTNUE i!ONE
D-8
-
c
»
~PA~R~l~N~U~Me~E~R~-------------DE~~~'~RI-PT~I·O~N-----------' ~
cD
B
-TOP
YIEW
WITH II/HER r:aVF_~ (IrEN' £)
f(E~DYED F[Jf CLANIT't'
A
9832> OZ ·000 I
O...T ... TERMIN"'S i4! "~R, O:ZA /TTY
983602-000a
OAT ... "TERMINAL, 743
,}B3BDZ- 00C>3
O"'T/I, T[!1,NI\W~l
743 I(SR,E1~fTTY, 'tI/Cl K~BO
98380'2.-0004
DATA lE.RNlINI>.L
143 I\SR,W/MOOllol,W/O I\lSD
K~R"w/MDDEM--
e
I
I
7
6
I
I
4
I
2
3
•
II, CNfZ?772 (C) fl I-').J._ t/J (He lIM
-. a,n. 'I 11' ~ fij,j ~'/A:
'~!I"I-oo ..", (l., 2£{.£'''"£..-
LfAlt -4 O,N' I
D
p r
J4ZZI€!C (I"~;"._~
/IAS 98.J!N·I-1
Ir "
.,..J.-
;_1_'"
FPJM
.vA:
D
~UJ·2 Lh1,IT~-.Y'
2
-;-,/
77
l
REF')q":£,/'
I
~
2.
,cA8L£
I
HOO'(-UP
START
P30Z.
ITENI5 Fflrl A55Y
LJili
c
SCHEDULE...
DE5C.~/PTION
UHlARKS
F/l1I5H
1"11'.'8 - r302
~Z+-(-'T-E-M-3-)~PR-I-N-T-H-EA-D------P-I-OI--~~p-w~a~~7-'o~,-+r=i/~N=lH~[~~IN7(L-UO=E~D-W-I~--'~TE-M~3~
\ill
3
ITEM 4- KEYBOARD
A55Y
ITEM b PONER CORD
W(PI
P3t'J1
uyaD -INIPI
.. tit)
-T3')1
-
5" (ITEM 3) MQTOf? DRIVE P!!OI
-T!!OI
'lCLUDt:D WIT),; ITEM
~+-------,-------------------~-+------~ O~LIER MOCELl: USED
-,
(ITE.M 3) HEAD LIFT 5'JL
P2.!:1
-:ri?S:
':-~D ~LENOIC'
~:+-~~:~_;_:
__;~:_:_:_'~_5:_:_E_D_A_ro_T_OR
__:_~_'_Z
__~____-_7__Z_S2.-4
-UU-P-~-II-P-LV-'-G----P-WJj--_E-~-13---+----....- 'E - J/
t--='-,.+--IT:.....(-M-"-..
I; eLUDED WITI-I
3
LINE
iTEM-~
~ UIII'~R PLUGS, ITEM Ib I NST~LLW
_y DOD t. c:-:x:JC4 ASSEMBLIES
f-'O+--'T.-'E-M-'-'-<1-U-""-P-l-Il--PL-lJ-'G---'-PIM-'l3---E-f-'S---+-n-,-,-8---£;-01-1-"~ ~~,
B
SE<:::TICAI A-A
5!:'A_E: F.JLL
5HT I
Z~I\£ B-Et
/
fl
I
-
A
SE.~'" ~ :.~
5CI._~
ROTA-E'::
9=~C"'"
EECTION .J-D
SCALE: t4CI.E
Z PLPCE 5
(I OPP05ITE. ftiO
IBO·CV'/ )
sur' Z;;J'£ 8-5
VIEW [-C
-SCI'lLE:NON£
SHr I ZONE :::-4i
A
C~·.
rDf96214r·.....
il_v
A&>
~ 83 IS 0 Z-
NO
3HEET
:z.
LIST OF MATERIALS
Part No.
Rev.
0983802·0003
0983802·0004
AE
AE
Assembly
DATA TERMINAL, 743, KSR, EIA/TTY, W/O KYBD
DATA TERMINAL, 743, KSR, W/MODEM, W/O KYBD
Item
No.
Description
TI Part No.
Quantity
Remarks
0001
00001.000
I:: A
0983807-0002
0002
0000 1.000
EA
0937300-0002
T~RMINAl
0002
0000 1.000
EA
0937300-0001
TERMINAL ELECTRONICS,743/745 WI MODEM
MECHANISM
bASI:: ASSY,743/74S,RECT CONTACT PWR CONN
ElECTRONICS.743-EIA/TTY
0003
00001.000
EA
0999264-0001
0005
00001.000
EA
0983825-0001
FAN ASSY
0006
00001.000
I:: A
2200044-0002
COVER ASSY,743/763,WITH XMIT ADJUST
CLIP,KEYBOAKD,FRONT
ASSy,~TEPPER
~OTOR,
0009
00003.000
EA
0983905-0001
0010
00003.000
EA
0983904-0001
CLIP,KEYBOARD,REAR
0011
00002.000
I:A
0912481-0001
JUMPER PLUG,CONNECTOR BLACK
0012
00004.000
EA
0983907-0001
SPACI:R,SPRING
0014
00001.000
EA
09A3863-0001
BRACKET,FAN MOTOR
0015
00001.000
I:: A
0999231-0001
PLATE, IDENTIFICATION-BLANK
0016
00004.000
EA
0972988-0019
SCREW 4-40 X .150 PAN HEAD CRES
0017
00002.000
fA
0972h79-0009
SCREW j4-20 X 3/8"LG THO FORM,HEX
0018
00002.000
fA
0411101-0057
LO~KWASHER
0019
00004.000
EA
0419346-0342
HELICAL COMPRESS SPRING
0022
00001.000
EA
0960141-0001
LABEL,SERVICE
j 4
REI-
EA
0989481-9901
TEST PROCEDURE SIL III FINAL TEST STA
0::>24
REF
EA
0993816-9901
TEST PROCEDURE,RUN-IN 7431145
0025
REF
EA
0984031-9901
TEST PROCEDURE,MANUAL 1431145
0032
RtF
EA
0983999-9901
143 CONTAINER,SHIPPING ASSY,PACKING SPEC
0035
RtF
I:: A
0984025-9701
MANUAL,MAINTENANCE,1451143
TERM ACCESS KIT. 143 KSR, EIA/TTY
0036
:J0001.000
EA
0931322-0002
0037
00001.000
EA
0931322-0003
TERM ACCESS KIT, 143 KSR, WI MODEM
00001.000
EA
0996522-0002
lC,TMS4132Nl-lA3215,4096 X 8-BIT ROM
TU
0417559-0001
SILICONE
EA
0983807-0001
BAS~
ASSY,7431145,ROUND CONTACT PWR CONN
U~ED
ON EARLIER MODELS
0040
AR
000CO.OOO
0040A
0041
0983841-0002
TERMINAL ELECTRONICS,743-EIA/TTY
00000.000
~A
0983833-0001
MECHANISM ASSEMBLY WITH PRINTHEAD
USED ON EARLIER MODELS
USED ON EARLIER MODELS
00000.000
EA
0983841-0004
TERMINAL ElECTRONICS.143/745 W/MODEM
00000.000
EA
0983833-0001
MECHANISM ASSEMBLY WITH PRINTHEAD
USED UN EARLIER MODELS
0041A
0042
01)42A
0043
USEO ON EARLIER MODELS
00000.000
EA
0983859-0002
COVER ASSY,143.W/O TRANSMIT ADJUST
00000.000
EA
0983859-0001
COVER ASSY,143,WITH TRANSMIT ADJUST
00001.000
EA
0937286-0001
lABEL,UL,7431145.7631165
0043A
0043
USED ON I:ARlIER MODELS
0043A
0044
(kTV) DOW 3140
I:A
0042A
0041
RUBBE~
00000.000
0041A
0042
for·0004 only
EXTERNAL TOOTH CRES
0023
0039
for·0004
983903-1 CAN BE USfD AS ALT
0015A
0038
for·0004
W/PRINTHO
USEO ON EARLIER MODELS
A-11
for·0004 only
B
c:::J~~H~~t~~!~.I~P~~~;~/'::.v x
THnT THE BL/JOE
I~ CEAJTU=~
0-;r;.~~:;;~/=~T~~;~~~;~~'J:.Tt;5-;:':~':%:T~~:~~/~~i2w~98#037
~~
5F:'=IFI5C ~V_·..:JAlFI6UC,..rl"::;'.J EH=~""":;IlD!,dlLE5 orDEr
-,..: PWI3 r55 v(TcY Z)/:; IAJ'j TAiLED
0/'..':'..;E.= J~'='::::
D
/J.lrt=TI)/lJI1.J6
:u.DT~
: 'TFM~/t6 ~=FC~c 11u';Ti:L ..... 'J.J6 ITEN'J16
0t.v5TIII.L '-f,C·':hhTE(JTEMZ:J).:JllCl TEe .'::VU:(tTEM 7)1>5 5HOWAJ III wEW E
[IjIAlTFRUh_
@]IiPPL~
u~H?Er PLJJS~ ~!TE/VII/)IAl5Th.. LED DM -01014.
,-,="'"'5
5
6
7
-010 3
J95~EM.eL Y' CULY
TCIJ.JlJ-Tc"Tuf"=i)hl-:~';
4
(!] .:;rTIlCH 6raL/lie Nl~lE FROM J301
ITeM -' PRIOR TD
IT£M6
[i£J Tl6HUli TO 8 ~ '5 W-1.8':;
TO
1J.J~rpLlIV6
@]TI6HUlI TO
Z!.'5W-l8~
IZ M~"M.hI' t:A' 4'ETISE6tI ".liTER RIB P,(Iff'!): ILE-i'T
,-IULJ
4/~e,~'
CP,:R -'Mil BE
.P~"I,{/CHEj
13 AU%llfpA' M"' BETI:EE,u t/vTER A'a1 "U ,Ie: IUfEA'T
,-lULl ~.:E fAHi.L BE """lUCk:'>
12]KcEP WIFE:: OLIT OF f'IW /JJJD DFF HEhT511J1( VYHEAll1tl5 T J'lI.LlIJ6 ITEM6
1# THERE SH,-ILL BE 09.:7 /U~:S L/,}:/T Tt? LATE/(,I//
;;;::E:ETJYEE.tI T,j,:-.:'I.e: /UJ"ERT ,-IUP &-I.:E PR /,(/,v,:,R
o l'f.t ~~LLA1~:/::;t§t-!::Z~LM$:
15. TMSfE ..MLL LIE
/UCHEj t/41IT T" mE A'APML
~~::AETH'EEU TkE .:'IPE /UJ"ERTAUP MJE PA' hV.bEA'
F"A' "';I'?Z Ai" P9
FCW "';1,)3 A. P£<'
1
3
"9t7
-IX3Z
-tJtJ3C
Faf' -()I':;"; ,,1_- PER
-v"a53
;:r:¥-P'/~AJ
F£k
_172.3/
F~ _':;It;.;u~~
.rEf 99!7Z.!I-OJ14
F
~(/jALJPELlu,pTE; IZ'/~-77
'7,I'7,Jfj:J.(!I;f!'.
eN 42'H43rf.1I1h....
G -%~CJ} ;::~L~OIO('
fI) f!EVI~f.D
TITL£.S,ONLM"
1-1,71
eN 42!H17t.; (DI J'L-..//J ()N 5H I,
REVISED PICTORIAL PEP. DWG
9?J9ZS7f21AOOED NOTES" Ttlif
1'!:H31ADDED ITEMS 38 THRIJ -1!>
(4-1ADDED PLIlG WITH 'CORD GtrIP"
H !o~:,T~~U'-~/:~EL~~;,~:5~:;:~~T;
c
c
PrI CHIINGES Ib ION 5HZ, LIN£. :3 CF
CABLE/JUMPER PLVG SCHEDIJLE,
L~~~~fll~/'r~r;il '1'o~;Dt':nV,/ft.~E~L,
5OLENOID"TO RfMARKS COL,
~OJ05"TO
LINES /I THRillS,
REMARKS COL
,.lIrr llLlM8EE
DESCt:IPTlOIJ
"8~B05-0IDJ
OATR TERMIlIHL, 745, KATAKANA ,
"S360'5-CIOz.
011711 TEFMIA/IlL, 745, KANA,
983805-0103
DIlTIl TERMWt9L, 745, CC ITT,
983d0'5-0IC.'4
98Ja05-Jl0~
9b_BDI5-0IQc.
B
ADDED
W!AII,
WIO
011711 TERMIIIIII., 74-5,(( ITT, W/AVI
OAT~,\ TERMINAL,74S,
JAPAN
t
Hlo
OArAT£NNtINAL J 745,JAPAIV, willI/X
W/O KYBD
CfUI,
NI'
KYBD
KYBD
CPLR, W!D KYBD
)(YB!)
CPLR, wlo KYBD
B
10 FEF
TOP YIEW
WITH/AiAIEr COIIEI. (iTEM6)
, 0';7£r corEr (IUM 7)
I?EMOIIEO For t:lRC/7r
It.
It.
,
'StDR
1;7-~1
CJ6
""""TOONAL
CLASSIFICATION
~
8
7
6
5
7
8
/U~
Z
4
2
3
Z REF
rEYtJOALD IAJSEAlT
Ur8(JIIfiJJ
.3 I't.ACES
6
9
10
3pLAl"ES
D
D
~CTIOAI
2CTIOU !l-A
!lCR£E.I/'
B-B
'CAlE:UOAlE
#NIlUS (Z II) 180" ,w)
!lH I(C-6)
5N 1(8-6)
t!AIJL~' JUM"Er PLU&
C
Mooe-up
C
~C/lEDUlE
Iretllf"rK5
STllrT
DE5criPTIOAJ
(IT~M
s) FAA! I/55Y
P50Z
PW/J -
{ITEM
3} prlUTHERD
1'101
PWll -.1101
P"1I7111fAO IIKUlWD WITN ITEM 3
WIl'l
f(YIlD
P3D1
P/IIItJ
[z]
Pf!fff1O:fit'''!!f".Wf''41C M/OIYEK
KEYtJOArD
=!>
~
W
Vlelll£
":~DZ.
- WIllI
- .130'
5
(ITEM
,pEAKEr
P#OI
- "401
Y'6UEr III{LVOED WI;-II IUM"
II
(FTEIf6)
JIIIlcrOPHOAK
P#OZ
-J#O~
MICI'OPfItw..c _LLlDCO WiTH ITFM6
7
(nEM 3) MOTor ~/YE
1'101
-.110'
('/TEM 3) #l£ilD ~FT SOl..
1'151
-.115'
(tTUII 3) (III/! 'EED ,..,TO"
pur
-oJ15Z
•..
B
115'1"
NIlEA' Co,fO,99r.ZLJ'-CJOOZJ
#
FIAIISH
6)
5) SEUSOK
PI
10
(ITEM
II
(FTEM II) ui.lMl¥K pt,,6
11
(ITEM
IAlC!I.IDED W, TH
IT!!M :5
E,,*!LI£"
"N~
MODEL.5
'Ull
V$ED
$DL~NOIQ
PWI!J - .11
pIIIIIS-E.DI
PWi!J -£.0_
II)
pHltJ-E#OZ
p/IIIa - t'#05
15 (lTENlII)
PWIS-I!405
_IS -£#06
IAlUFAlIIL.JlJIIIP£r Pl.U65,ITEMIi
IAl5 TAlit'D OAJ -0101, -o,c~ ;-0'05
ASSEAltJt I" OAil y
II
0
lJUTEC CoIIEC/ITUn)
wnN IIIUiIU'lHTC(ITEM zo)
5HI/.:-5)
~
ReF
'Wf'LIOMDllISErT
ceY_
~z
Z5~.IZS
,
A
P
SECTIOND-D
XlII.e:AlD.UE
~ ~At'E5
"""AD5I
re CliO
1t0TATED I.O·trt)
:lII I~~
~'EF
IIIEW
t.'-c
5C"l~:AlON~
5"
I (C-#)
I'tJT~T~D
""-I!W
A
LIST OF MATERIALS
Part No.
0983805·0101
0983805·0102
0983805-0103
0983805-0104
0983805-0105
0983805-0106
Assembly
DATA TERMINAL, 745, KATAKANA, WID KYBD
DATA TERMINAL, 745, KANA, W/AUX CPlR, W/O KYBD
DATA TERMINAL, 745, CCITT, W/O KYBD
DATA TERMINAL, 745, CCITT, W/AUX CPlR, W/O KYBD
DATA TERMINAL, 745, JAPAN, W/O KYBD
DATA TERMINAL, 745, JAPAN, W/AUX CPlR, W/O KYBD
Item
Quantity
TI Part No.
No.
-
Rev.
l
l
L
L
L
l
Remarks
Description
0001
00001.000
EA
0983807-0002
BAS~
0002
00001.000
EA
0937300-0004
TERMINAL ELEC.743/745 CC ITT
0002
00001.000
EA
0937300-0003
TERMINAL ELECTRONICS.743/745 CC ITT MOUM
ASSY,743/745,RECT CONTACT PWR CONN
0005
00001.000
EA
0983825-0001
fAN ASSY
OOOb
00001.000
EA
09qQ23q-0004
COVER
0006
00001.000
EA
0999239-C003
COVER ASSY,INNER,745/765,W/O
0007
00001.000
EA
0983809-0001
OUTER COVER ASSY
0009
00003.000
EA
0983q05-0001
CLIP,KEYBOARD,fRONT
0010
00003.000
EA
0983904-0001
CLIP,KEYBOARO,REAR
0011
00003.000
EA
0972487-0001
JUMPER PlUG,CONNECTOR BLACK
0012
00004.000
EA
0983907-0001
SPACER,SPRING
0014
00001.000
EA
0983863-0001
BRACKET,FAN MOTOR
0015
00001.000
EA
0999231-0001
MOD~
(NTTI
ASSy,INNER,745/76~,JAPAN
fo,·0101,·0102,·0105,·0106
X~IT
ADJUST
fo,·0101,-0103,-0105 only
PLATE, IDENTIFICATION-BLANK
0972QSS-001Q
SCREW 4-40 X .750 PAN HEAD CRES
EA
OQ72679-0009
SCRE~
EA
0411101-0051
LOCKWASHER N 4
00004.000
EA
0419346-0342
HELICAL COMPRESS SPRING
0020
00001.000
EA
0983Q14-0001
NAMEPLATE,OUTER COVER
0022
0000 1.000
EA
0960141-0001
LABEL,SERVICE
0016
00004.000
EA
0011
00002.000
0018
00002.000
0019
#4-20 X 3/8"LG THO fORM,HEX
EXTERNAL TOOTH CRES
0027
REf
EA
0984026-Q901
TEST PRCC,SYSTEM TEST,743/745
0028
REF
EA
098387b-9901
TEST PROCEDUPE,RUN-IN
OOZq
REF
EA
0984031-QQOl
TEST PROCEDURE,MANUAL 743/745
EA
OQ37304-0001
COVER, SAfETY
EA
098400Q-9901
745 CONTAINER,SHIPPIN& ASSY,PACKING SPEC
EA
0984025-9701
MANUAL,MAINTENANLE,745/743
TERM ACCESS KIT, 745 W/O KYBD,KATAKANA
0031
0033
fo,·0103,·0104
98390S-1 CAN BE USED AS ALT
0015A
0032
for-0101,·0102,·0105,-1016
fo,-0103,-0104
00001.000
REF
00001.000
0034
00001.000
EA
OQ37322-0007
0038
00001.000
I:: A
0996522-0002
IC,TMS4732NL-lA321~,4096
0038
00001.000
EA
0996522-0003
[C,TMS473ZNL-lA3213,4096 X 8-BIT ROM
TU
0417~59-0001
SILICONE RUBBEk (RTV) DOW 3140
00000.000
EA
0983801-0001
BASE ASSY,743/745,ROUND CONTACT PWR CONN
0041
00000.000
EA
OQ83841-0003
TERMINAL ELECT 743/745 CC ITT MODEM
fo,-0103,·0105,-0106
0041
00000.000
EA
0983841-0005
TERM ELElT 743/745 CC I1T MUDEM (JAPAN)
fo,·0101,0102
0039
0040
AR
B-BIT ROM
USED ON EARLIER MPOELS
0040A
USED ON EARLIER MODELS
0041A
00000.000
EA
0983B33-0001
0043
00000.000
EA
0983808-0004
COVER ASSY,INNEk,745 JAPANESE
0043
00000.000
EA
0983808-0003
COVER ASSY,w/O TRANSMIT LEVEL
0042
0043A
0045A
fo,-0101,-0105,0106
AOJUST~ENT
USED ON EARLIER MODELS
00000.000
EA
OQ72674-0001
CABLE NlS AwG 3 COND POWER,ELECTRICAL
00000.000
EA
0983911-0001
COVER,SAfETY
0044A
0045
MECHANISM ASSEMBLY WiTH PRINTHEAD
USED ON EARLIER MOOELS
0042A
0044
for-0103,·0104,·0105,-0106
fo,·0101,-0102
USED ON EARLIEk MODELS
USED ON EARLIER MODELS
A-14
fo,·0103,·0104
8
7
7H_C -=ItE
-'=Y':'
'..~..Jr~ I~':-I:;~
T"_: Pr.E
~~'5Y{!T~M Z)'51L:;'-.._~~ 'L FETt4'J.jIL6
_
~ ~,~;~:,.':~-~::~:;~~{~:;~~~-::/;:;;~':c6;~-~~ ~~. ~:)4
o
to:
_ :'._,
G ,.:.--: I' 4.-'=~ ::_ -::. ~ r~L' ';L:; JFFOF NeI1T~/LK AII':IJ ,(..:s ....~.. _Il.Jt:;
o F:'-ENE
~ -, ~
-:, .. = 1/_ f£ ,'n. ~EO PE.(I q'992- -5~~
Z
.:F..,""'r-:=t-lfe - ....... ---..: ... Cfr"fc_-- . .-_/-:
o ,-:
,;-
v:; _~/." -.:': ,.;(.-_: ~-'L_'rCliAL M#lCJ~,..,-:--oKl-::-~0
~
T~>
001
T>">...(.L
'J
~"'?
~. .~;
''-L
I
3
_1-
I'
\
I
"-'...1-'
2
\
I
Z.
fllltU!
6
7
8
5
4
3
2
o
o
5ECTJDAI
~ECTIOU
/l-A
:J.."FlLE: 1/1
I{B-o)
B-B
seR£E: IJOUE
.PlRCcS (Ztii>/SO'CIIII)
SH I (C-6)
5"
C
CRi!JLE
HOOK-UP
z
5TAFT
P30Z
p~,jr
(ITEMS)
FIJA/
(ITEM.3)
PRIJ..JTHEjlO
I:EY130R~O
FI,u,='H
PWd-J30Z"
Pial
"'~5r
W/PI
PFII.ITHE.I9l> IAJCLLJDEO W,TIIITEM 3
KY8D -
-
....~
(ITEM 3)
S
0')
p"a -
j/~/P J
1
.-"
PZOI
(ITEM 3) HEROlJFT SO£
PZ':iJ
-JZ';;I
!
7
(ITEM
Pz,z.
-JZ!Z
I
JZ:)I
1-+'------------"-1If--t----,.//
8 (ITEM 3) 5EA-SOC
9
(ITEM
II) JVMPE£ PlV,.
~W~-£4/~
10
(ITEM
II) dUMIEC pltla
PWB-E_,S
e~/6
'MC!.UD£C WITH ITEM 3
-=AALIER tHoPELS V.fE!J L.IA/£
FEEO S()LEI./()I/J
JUNlP£K PLV6'SIIT£M I~ 11I5TI1LL£D
OA/-OJOZ AIID -OO~ AS55f'3£1E,
B
B
~
EEF
KEY13011F.
A
_ £,e/"
PWB -
---
J
.MOTOF D.FI¥£
6
3) LWE FEED MOT()P
c
J
5CII~DUt.~
DE5C~/PT/OAJ
o
EEF
U~FTKErlJORLD
6
SECT/aU D-D
seR£E:AJOUE
Z Ft:«ES (I OI'POSt U £LD /Bd CIO')
5»
I{S-S)
REF
VIEW
c-e
~CI1LE:IJOAJE
5»I{C-~)
l£OTATED
90" C'N)
A
LIST OF MATERIALS
Assembly
DATA TERMINAL, 743, KANA, EIA/TTY, W/O KYBD
DATA TERMINAL, 743, CCITT, W/MODEM
Item
No.
Quantity
TI Part No.
Part No.
Rev.
0983806·0101
0983806·0104
M
M
Remarks
DeSCriptIon
0001
00001.000
EA
09B3B07-0002
BASE ASSY,743/745,RECT LnNTACT PWR CONN
0002
00001.000
EA
0937300-0002
TERMINAL ELECTRONICS,743-EIA/TTY
fo,·0101
0002
00001.000
EA
0937300-0003
TERMINAL ELECTRONICS,743/745 CC ITT MODM
fo,·0104
0003
00001.000
EA
0999264-0001
MECHANISM ASSY,STEPPER MOTUR, w/PRINTHO
0005
00001.000
EA
0983825-0001
FAN ASSY
0006
00001.000
EA
2200044-0001
COVER ASSY,743/763,W/O XMIT ADJUST
0008
00001.000
EA
0996289-0002
CORO SET~3-PIN PWR-OOMESTIL GRAY W/CLIP
0009
~0003.000
EA
0983905-0001
CLIP, KEYBOARD, FRONT
0010
00003.000
EA
0983904-0001
CLIP,KEYBOARD,REAR
0011
00002.000
EA
0972487-0001
JUMPER PLUG, CONNECTOR BLACK
0012
1)0004.000
EA
0983907-0001
SPACER,SPRING
0014
00001.00f}
EA
09B3R63-0001
BRACKET,FAN MOTOR
0015
00001.000
EA
0999231-0001
PLATE, IDENTIFICATION-BLANK
0016
00004.000
EA
0972988-0019
SCREW 4-40 X .750 PAN HEAD CRES
0017
00002.000
EA
0972679-0009
SCREW N4-20 X 3/B"LG THO FORM,HEX
0015A
fo,·0104 only
983908-1 CAN BE USED AS ALT
0018
00002.000
EA
0411101-0057
lUCKWASHER # 4
0019
00004.000
Ef.
0419346-0342
HELICAL CeMPRESS SPRING
0022
00001.000
Ell
0960141-0001
LABEL,SERVICE
EXTERNAL TOOTH CRES
0025
REF
E:A
0984026-9901
TEST PRQC,SYSTEM TEST,743/745
0026
RfF
EA
0993R76-9901
TEST PRUCEOURE,RUN-IN 743/745
0327
REF
EA
0984031-99Jl
TEST PROCEDURE,MANUAL 743/745
EA
0983999-9901
743 CUNTAINER,SHIPPING ASSY,PACKING SPEC
0030
0031
EA
0984025-9701
~ANUAL
0032
00001.0UO
£A
0937322-0008
TERM ACCESS KIT,
743
0033
00001. 000
[A
0937322-0009
TERM ACCESS KIT,
743 WID KYSD,
003A
00001.000
EA
0996522-0002
lC,T~S4732NL-ZA3215,4096
TU
0417559-0001
SILICONE RUBBER IRTVI DOW 3140
00000.000
EA
0983807-0001
bASE
OOJOJ.LO,)
EA
OSE3841-C006
0039
0040
RE:~
AR
0041A
0041
00000.000
EA
J983841-0003
00'.3A
W/~ODEM
fo,·0104 only
X 8-BIT ROM
CONTACT PWR CONN
~UOELS
TERMINAL ElFCTRONICS,743,FIA/TTY (JAPAN)
TERMINAL ELECT 743/745 CC ITT MODEM
USEJ ON EARLlER
aoooo.oOO
fA
0983833-0001
00000.000
E:A
0983859-0002
~OOELS
MECHANISM ASSEMBLY WITH PRINTHEAD
USED
0042A
004.3
KYPD, EIAITTY
fo,-0101
USED ON EAfil IE:R MIlDI::LS
0041A
0042
win
AS~y,743/745,ROUND
USEn ON EARLIER
0040A
0041
,MA! NTENANCE, 745/743
O~
EARLIER M00ELS
COVER ASSY.143.W/O TRANSMIT ADJUST
USED ON EARLIER MODELS
A-17
fo,-0104
3
2
4
REVISIONS
NOTES UNLESS GTHERVI1SE SPECIfIED
lTI ALIGN
INSTALL 1l"EM' TO
2
7D
Y WITH MOLDED-IN ALIGNMENT
P~OPERL
ITEM
f5CING CAREFULL
PINS USING EXlSTING HARDWARE
[!]
o
DRESS CABLE AND CUP IN f. .JSITION WITH
EX/STIN6 CLIP
a.
ON FIELD 5E~VIC£ LlAiITS AAJD gA~E'S
JAlS7ALL PEA" .,. OAI P.A~E~ Pt£FLGC7Z),f!
7rJ C()VO? AssE/tIII1L'r AlUN1"E'~. JTEM
~
4 SN""lL t:'auTAI,u P/,u 9!1!!J~$7-lIoal M/O
TNF AH.i'o,l'A?IATE" ,l'EV/SlCJA/ L £TTE'k?
~ "THAT PAKT NUMBER
8
C
N"+2f2St(C)-U? ~
TUM 3 PIN WAS Z2000+3
--:1f(J/
0.14[9334' D) 6. 7f1u:JItJ:&.., Cd
ADDEO J7EM 4 7lJ LM (2)AOD£1) NOTE .3
CN-I2.12"~/EJ..s:IA>."..JIJ ANJT£ J
",Z1-11
WRS ... Pl'N99SlISN't)()/...
2-11-78
I-Ill -71
.R'~
.5
0
/2Pt
,f.,LA
02
c
c
:J>
00
B
PART OR IDENTIFYING NUMBER
~---+-----1;:~~~~§~~~E~2.:~O
:~2~~':'~~~: ~~~~0:~·::1~:~£~~:s
A
o.o<"Af
SCQ
NO
H
1.~""'~o(
IDENT
PROCESS
~Ec, IttUs
1'0. AlW5T SCREW UNTIL FORtE "J:" IS WITHIN
TOLERANCE SPECIi:IEO. TillS MUST BE ADJUSTED
.m5~:&'1'k-1~
Il£ADLiH
'1. IN5TAll DRIVE :'INK (lTEM04:1)AND AD.1UST
!&:AD LIFT TO D:MEN510N SHOWN
BY AD.IUSTINC. SOLENOID DRIVE BAIl.
OM SOLENOID PLUNGER
DIM-I
WIIll.£ MAINTAININ6 ADJUSTMENT NO. S
CON~TANT •
1]~=§~~~~~~8~
I. ASSEMBlE PIVOT (ITEM 4Z) ONTO ~RAME WITH
B
B
PUSHON RETAINER (ITEM '38). APPLY I DROP
OF OIL (lnM 30) TO BEARIN6 SURFACE.
2. ASSE",'8LE SOLENOID DRIVE BAlL OlE!'..' 43)
ONTO !>CLENOID PUJN6ER :):1.1 TURNS. APPLY
VIEW
0
SH2(B-2)
~~i ~..?R~~1~Ni~~F~~EO~I~y6ALL/
1-=:OOfKfH
.au!:: ~:!m ~!f.m
999257
4f!::t ~!&AY ~!&\f
. - . IOF
LM
8
6
7
4
2
3
o
o
Il
c
SECTION
c
A-A
,SEE VIEW 0
SH I (8-6)
II
B
Z. PLACE CAIllE (ITEM Z4) IN SlOT
AND WRAP CCW f.-lit TURN!'.
c
VIEW B-B
1_ PLACE TIN510N ARM (ITEM a)
A
VIEW C
SCALE: NONE
(A-5)
IN CATCH ;>O,IT ION
S. 5UlWLY l!n£ASE lEHSiON ARM
fliDM CATCH POSITION
Go. I14TATE MOlOR CAPSTAN FROM
ON£ EXTREME TO THt OTHER
TO REMOVE AU.. SLACK IN CABLE
(C-I)
~
A
LIST OF MATERIALS
Assembly
Part No.
MECHANISM ASSY -BMC FRAME
Item
No.
0999257'()()()1
Quantity
TI Part No.
00001.• 000
fA
0999241-0001
FRAME, MECHINISM PMT
0002
00001.000
fA
0983812-0002
~OTOR,DRIVE-PRINTER
0003
00001.000
EA
0983816-0001
SOLENOIO,PRINTHEAD
0001t
00001.000
EA
0983811-0001
CARRIAGE ASSY,PRINTHEAD
0005
00001.000
fA
0983818-0001
~INDOW
ASSV
0006
J0001.000
fA
0983873-0001
SPRING,OANCER
001)1
00001.000
EA
2200030-0001
CEFLECTOR,PAPER
0008
00001.000
0983880-0001
ARM ,PUllEY-TENSION
OOOG
00001.000
fA
0983883-0002
SPACER, PUlLEY- PMT
0010
00001.000
EA
0959402-0001
PULlEY,CA8lE
00001.000
fA
0999258-0001
SPRING,CABlE TENSION
00001.000
EA
0999263-0001
ROLlER,PAPER DRIVE
0013
00001.000
fA
0112684-0005
BEARINGS,SLEEVE-FlANGED NYLON 02510 10
0014
00002.000
fA
0244440-0003
BUMPER,.500 0.0.
0015
110001.000
EA
0983872-0001
ROlLER,DANCER
0016
110002.000
EA
.)983874-0001
PIVOT
0011
J0001.0110
EA
2200031-0001
SPRING,HEAD LIFT (STEPPER)
0018
1l0002.JOO
EA
0983889-0001
BEARING,ROD SUPPORT
0019
00001.000
EA
uqS3€84-0COI
POD,CARRIAGE
0~20
IlOOOl.000
EA
1l983e86-0001
BPACKfT,BAIl
0021
00002.000
EA
0983938-0001
BAIL RETAINER
0023
00002.000
EA
0912485-0001
\ojA SHER ,S TEEl-THR US T
0014
JOOul.Oull
fA
0959297-0002
CABLE,DRIVE- PMT
EA
11983900-0001
KNOB,PLUNGER
0027
00005.000
EA
0416622-0011
WAS HE R
11028
00008.000
EA
J411104-0135
\ojASHEP
0029
J0001.000
EA
0999246-0001
PAD,FRICTION
O~25
~4
# 4 FLAT
LOCKSPLIT
0030
AR
EA
u232513-00J1
ell
0031
AR
TU
0232334-6050
LUBRICANT SILICONE GRS LT GR 2 Ol TUBE
0983916-0001
SPRING,EXTENSIoN
1/43 TERREST IC
00 32
00C01.000
EA
01133
00007.000
EA
0972988-0015
SCREW 4-40 X .375 PAN HEAD CPES
0034
JOOu 1.0011
EA
u98G71l-0002
LA6El,WARNING,743/745
0035
JQlllll.JOO
EA
2200032-UOOI
BEARING,RETAINER
0036
00001.000
EA
u972969-0003
SCREW 4-24 X 1/2 HEX WASHER HEAD
0"31
JOOOl.OOO
EA
L21l0045-0001
~OTOR
0038
F
Remarks
0001
0011
Rev.
ASSEMBLY, 4 PH. STEPPER
J0002.1100
EA
J97L491-0023
RING,RETAJNING
000Ul.000
EA
220~033-000l
PUlLEY,30T TIMING BELT
v"41
JOOOl.JOO
tA
2200041-0001
BRACKET,SOLENOID AOJUST
0042
00001.000
EA
2200034-(001
PIVOT ARM,SOlENoID
"043
00001.000
EA
22U0035-0001
BALL,SolENOIO DRIVE
A-22
LIST OF MATERIALS
Assembly
Part No.
MECHANISM ASSY-BMC FRAME
Item
No.
0999257·0001
Quantity
TI Part No.
Description
~044
00002.000
EA
0912988-0012
SCREW 4-40 X .188 PAN HEAD (RES
0045
JuJ01.01l0
EA
220()037-0001
OR I liE LlNK,BAll
JI.I46
JOOO1.IlJO
EA
2200038-0001
BAll lINK,BAll DRIVE
0048
00001.000
fA
0537711-0005
Ot.tI PeA-:-:' HOLES.
~ PO'S\TIO~ At,D ~lTAC.rt
f'-;::)\L\T--iE.J\C,
_ _ -1 ____
!:'::." CABLE U5INC,
,r
~~~ F(Ox~~r~ ~;;~~~~~S:(~l~:/;\.;'I ;::.~E.J'i~\~ r":~17Mr.
00
o
[B
---
';7"~J~:"
~'
:AUT 'ON: PRlrn~:J:' "'5S~ ("eM Ii I~ VE~'
FRAGILE. E.X''':R:>.AE Cb,;.::'tJ=-\ e.: fAI1Et't TO
F\VOI\:l CiA {i"GE.
At)JUSi KNOB 5.0 lr "1 5.~~£."i~lll) \-u-\:, A ST~o\\~
OF .045:1:.005 MF.AScQ~") ;..- I-1Ai,"JM D~"LEc.TIO/J.
l'>I>.IL I'IA'f HAVE t.JO V,~.~ T~"'IJ .CJ'LO WAI.P W,T~IN
O>JE LI'-lo LEIJ&iH.
:'_:'_'i=:' d~?: =- .... __ I"'~
3.)'.-I£X: :/':'::'1...,::,::;'
~
~~:rl L'I'I'. IDtED liEii.:, 314<'3J-4[[ 1 1
CH~N(,tD
SOL~i~O
f_
i,-c=I--:--- o
NOTE a ~JV;:;' ""~LJST
JB:C, T
') H~C; A. :,TPOKE CI=" C"!O! w~.
n
4,:3 14 r..)
.-"/...!"",/o
-L2:~~/~L'J.
t-.JOTt. 4 NA~·- -- 5TRJKE ')F ... :>~ MA,.( .::':'=- ' , J
tI/·j,) ""'J;~ -;- ... A'J ;2J /I':;{ Ij-I-,~)'J h 'ilJ ."£ _ E _
--
o
;"21(;.2i:(CM~~/~,uij;Elf::7EOITEMr7"~--"'-: ~5 TO LM ANt) FD fj}IICtJElJ IMTE ~
4- reMOVED ITnoil
C
6 4Z~Z-;~I'C)-J /fI.'/'J'..tt.{I)AO:.:;O~"1'l/... ,7"'''
4,3 II~
SCfI£IJUL'
rz)
AC!?£/J -8C¥)1 tM
c
j.=-;:-:-=--
c
-eool
-0(/0/
rN
'
%
B
[JOO
~.......~;,;!==~11111@
VIEW A
SCALf: FULL
(a-f»
MECflAA//!SM AG~Y' WITH Pl'/A/TfiEAD
M£CHAAII'SM ASS"" N:/If P.R'!tVTJ.I£ACI
I1CSC!:II"TI!#,./
B
EXISTING CARRI.o.GE !>(.REW
a
PL~C.ES
C.ABLE R£:TAlltlN> CUP
CA~E
ORIVE ASS'!
t.K~SSI!l
~~~E~ULL~
CLIP
co
a
LIST OF MATERIALS
Part No
Assembly
0983833-0001
MECHANISM ASSEMBLY WITH PRINTHEAD
Item
No
0001
J0001.000
EA
0983829-0001
PRINTHEAD ASSV
0002
00001.000
EA
0983811-0001
DRIVE MECHANISM
EA
1l993609-9901
FUNCTIONAL TEST PIlOCEDURE
EA
0231023-0011
CEMENT
00113
0005
REF
All
A-25
GlVPTAl,GE-1201
E
Remarks
Description
TI Part No.
Quantity
Rev
RFD ENAMEL
!5
7
8
4
WJTE:
NOTE3 UNL,SS LlTHERWIJ(
(ITEM ~2) PlACE ONE DROP OF OIL
clT[M 51) ON THE ttL! W~,SHER UNDER
,~E E RING ON T.I: CARRIMt AND
L--+--'=;:;;-;~-!'7"~'7";:7'::~"---"-''--------I
RINe (11 3aJ ON PL\JNGER
PLACE ONE DROP OF OIL lIT 511
ON PLUNGER BEfORe REPlACING,
,HE" MOUI'IT SULENOID ,0
E3RACKE1 {Il 15)
o
5" Z.
CONT 0
SPECIF/W
[iJ ~r'~~~AL~;6[ o~h~~t~~:K~kJ,( '~~D 41
III :~~~-g;O '}~~G';~T~~~~O'
N01'E~
2
3
;'11 D
DKE DROP ON EACH SIDE or THE
CARRIAGE MOVE THE CARRIAGE Dvm
,HE OIL SEVE.RAl TIMES TO WET THE
(0 S)
FtcT WIPtS
INSIDE
PIN OF 17EM 13 WAS 97141J-aool
C 40g6bl eel ,
1,4 I!!
an
/) LM IT 13
AS 2
912451 ~QOOl (3) iT 50
~638~7·0001 rS)ADDE.D
lONe .3C ADDED IT 55
0
/1;1
7~
~a
(V ITeM 24 PAJIT NO WAS
CITY WAS 4 (4) IT 26 PIN WAS
ITOIIS 5455/56 (6)"/0 SH7
(7) su I .3C IT 54 WAS IT 13
(;;! :~' w~~ ;~:fo~21f7 ts'Al_~oJ5)(7/4 ~:)SH'
TA~
5C -
(lO) SH 2 NOTE" WAS
4 BEND
ON SOLENOID
BRACKEr (IT 15) SO THAT SPRING rtNSION. VlEI\SURES
,~! 2 OUNctS
WITH CLAW (IT 26) IN POSITION A.9
SI-lOWN (JI) SM 2 NOT[ 5 WAS 5 INSTALL DItWC CLU7rH
(IT Z4) , STAR WN[El (IT 25) Oft SHAFT DF PIVER
!JMIY[ ROlLER (IT 14) AND PllSH TIGHT IIGAIN$T
PEDESTAL fiT 7J APPLY
(IT 48)
D\
~
~Q~;t6 (~~~~7f~'(~~L~
ADDeO ND1'E.
~ SI-\ C
oq
;;16 SH \ ~~~~i ;'~1
0,"" SHI;!cONtA,fD
1.0Nt
E 40'1~72(C) I
I)
t.---.. Ic'U-75
'. " ,
@N~;} r~1'~ (;; D) @ 4-f4rLA'T WAS
2)ONLM' ITEM 45 ClIYWAS II.
c
4D'%.81 (eo) U1?~
f
l-c<-llD
I ~~~W6~~~~-M:l,~~~ fONt D,ID
1-21 ,,.
~
.~ r
C
ADDED CALLOUT 0
c)g~ ~2, 2~~Nzt~~ fT€MCH~~GQ\~ ~A@~Q'D '/oJ"
"3 )CHANGEO 5H I '-ONE D-5 WAS~
®
4)CHAI\GED ~HI;:DNEO~
'),"M'~"'~
6~ ~~~EPori~ 6~~~Tt~5 ~~~JD4,~~~:y GRE.~ ...
OI\J R6lLER'! CHANGED ~D\O +
B
@,,4FLAT
SCALE
A
409933
(c)
4Q9717
t C.>
AOO4'O ~jIIre
ADoeo AlorE
\
[§] 36
5EE VIEW
TAAT •• ,
REV
SHEET
AS Ad
1 2
L
~1391r.
L~A/oV-RRli'{,E 0T."'I}OMTO CABLL(IT.~~.
"1
4
I~) 'Y\)~.T bE ~MOOTH AROuND
/\NI' "JO~ED :VENLYOI'\OTHE.R [NO
A DROP OF OIL (IT .51)
,)J\j
rhl {lIT
1!-~~-~-~1
(A) MATlt-JG SURFA.(ES 01;: LINK
S[WHOIO
~llJIISTME.NT
Tllf
TRAMI (dTNAT THI [Pt.! Of THE SilFF£N£R
/'UU BUMPER WA<:HER (IreS) BAU<' [OMft[Tflr
AGAiN'T (LAW liNK IiT?l) PULL DRiVE liNK lIT6/! IIKiIl Pl!TTOM TOOTH Of (LAW
TOUCHES THF
~lllRrlHfFL
WHIL! HOLD/N(, IN
FELT W!fER AND M'WER AND TlCHTFN
rHJ~
\ \ ...
\ \-J
:;_,~~rl~ttr
~='It«'~0'1~ ~-'f_
l~) ~~_/I~D& S~~;~~~E(~T ~~ ~B~~A~/i:'lf~RriAf:(\~SE O~TLI~rt aA~(17 Z~ {., \~\ ~\LL
BY
+~k~I:,,(tJtf6\'1T~~oG~tlC~~ .i;i,~fi~I~~t~4.(:,i 'fl:,,,,-
o
"
#il
\(_¥~IRE.L
~l:~ ~n:~i:3
P
I
P'§
T e:- t:rr _ *'4 f3 i+4
P
-$~-";;'-tl,..r
I ¥~~-~~
~TW:---i=->t~~-~tt;~-1-+t 40FFLS
@:AtA <~fF1E:
_~-fflt--_V\ ~~
MS/T/ON fllTT/JJJ. 5{}LfN(}IDACAIHST
ICREW,
)2 ATTACH HEAD FORCE LINK PAD flTEM 71) TO HEAD~~WZ:::~,}:fsf! ~ IORllU[ '>eeL 'I' ru la' ~ ~t: IN.
SHOWN IN VIEW H WITU ADHESIVE (JTEM 70) LOCAl/ON 011 HEAP fORCE
~ It.JSTAlL CL.UTCh (11 Z."'r) INTO DRIVE L INK CIT (../) PER VIEW J"
LINK WHERE ADHESIVE )5 T~ BE APPLIED SHAll BE ClEANED TO REMOVE
~ IN~URE T~AT DANCER SPRING IS hlOT WARPED OR PRELOADED
MOLD RELEASE BEFORE BONDIN. BY DIPPING IN CHLOROTHENE FOR
FIVE
[@
MINUTES
TIGHTEN 'CREW TO 60 r
5 IN-LBS
[til r~~ O~J;%~~~t~;T~~ ~~ifrS~~~~O
21
COMPENSATE FOR NIGH OR
II GAP Df.o8 : :~~ [~15T5 BETWECM THE ~E.!>-TH)
~~~P~'t.~I~~s~NgiHf fG~~:,Er~~Fof~~~~~'r. 0(,)
~_
c
/
I
/'
1'/,00
I
/~E~~~~~~~
@"4~f'LlT
/(/vt- H
IA 4)
r
140 REF
S[CTION
SH I
D- D
(B 6)
J
VIEW
SCALE NONE
@l5H 1 (11-5)
~
2) Pille[ ,,,,ad (ITeM ~6) IN SLOT
AND ;YK'AP (,C'W 6·/12 TuRNS
~AR
B
_0,),010
ReVISIONS CDNT\:' BELOW
DISTANCE BETWEEtJ TOP OF BA.IL ~ TOP OF CARRIAGE
NfiEEL SHALL BE 055 1: 02.0
130 BETWEEI'J
~-"THE "lOLENOID METAL BRACKET AND THE
MECHANI~M FRAME
ARROWS ON, ( J r I T E M 24 SHOULD BE
THIS END
\
FLUSrl WITH ITEM 61
THI5 WD
\
LET£O ,\j[)l-[ I::
~n: GlOWA"
-_,§
~ HEAOllFT SOLENOID SHALL 'BE
DN fRONT 0, C1I1'5TII\o\ Of llilTOO I\::':,~ (11.1\
NOTI.""· CONT' D LO\,\l O-G,
REF~)
'I~)
AF TER INSTALLING CHUTE QT &»
(A.. NORMA.L LOAD Af'PLlE.O
TO l"HE C.Ehll"tR 01= THE ROLLER 'HOULD MEA5URE /Q:t Z Ot.
whEN DANceR ROLLER eOTTQM5 ON CHUTE)
~gJ~E.W~~\MO~~ 1~\,\E.~~~~~DJ~T6H~~~tR~J·
_/
o
VIEW C-C
ROTATED IBO·
..J~'
(D-5)
@REF
pREF
SECTION
SCALE
GG
2/1
~y/'"
\~l
VIEW
(A-?)
F
" '- CATCH
.... 4) F-LAC[ CABL[ IN
SLOT
ilzj(j})
VIEW H
NONE
(C-Z)
/
SCflLE
POSITION
l
/ ' ) PlA( [ PU(LO
AS SkOWN IN
VIEW
TENSION
viEW F
ARi'o"f
(.4-6)
E
SCALE' "10"-110
5H I (A - 5~
ItllfD
LIST OF MATERIALS
Assembly
Item
No.
Quantity
0983811·0001 AB
TI Part No.
Description
lIOloll
JOllu1.:lJJ
Ell
,,983812-0001
~OTOR,CRIVE-PRINTER
O,J.,2
JIHloJl. )00
EA
J983815-00J1
SOLENOID,PAPER ADVANCE
0003
JOOJ1.JOO
EA
J983816-0')01
SOLENOIO,PRINTHEAD
0004
JOOOl.v"J
EA
...,983817-uOOl
CAPRIAGE ASSV,PRINTHEAD
JOO1l1.000
EA
098381B-0001
WINDOW ASSV
Q0001.vOO
EA
U983819-0C01
CHUTE. TENSION -
EA
U98395B-0001
PEDESTAL
EA
~9d3866-a001
FRAME,DRIVE
EA
0983gJ6-0001
CE~LECTOR,PAPER
EA
0983880-0001
ARM,PULLEV-TENSION
uui.l6
Rev.
Part No.
DRIVE MECHANISM(W/SOLENOID LINE FEED}
0"J1
O"lu
Remarks
PAPER
MECHANIS~
0011
iJ\)uJl.JJO
~983883-00u1
SPACER,PULLEV
uJ12
JG\}(.ll.OilO
0959402-0001
DULLEY.CA8LE
0013
000""1.000
EA
0983924-0001
SPRING CABLE TENSION 1431145 DRIVE MECH
...,014
JO\.lOl.JI10
EA
0983871-~001
ROLLER.PAPER DRIVE
OllL5
JOllJ1.JOO
EA
J983860-0001
ERACKET,SOLENOIO
Qv1l>
O,)",Jl.uJO
u983861-0001
STRAP,MOTOR
OU17
JC001.000
EA
0983879-0001
NUT,~TR
0018
00001.000
EA
0983c87-0001
CRADLE.HOTOR
0019
JOClll.1l00
EA
J712684-0005
BEARINGS. SLEEVE-FLANGED NYLON
01)2,)
00003.000
JOll01.000
EA
EA
0244440-0003
~983812-0001
BUMPER,.500 0.0.
ROLLER,OANCER
0022
JC002.JOO
EA
v983g14-0001
PIVOT
0023
O')OOl.JOO
EA
0983916-0C01
SPRING.ExTeNSION
EA
053J933-0013
CLUTCH POSTIVE LUBRICATED WITH OIL
0,)25
OQou1.oll0
EA
0026
0000l.JOD
EA
0983926-0001
CLAW .820
00001.000
EA
u983956-0001
LINK,MODIFIED SOLENOID-CLAW
ons
J0001.JOO
EA
0983888-0001
LINK,HEAD FORCE
J.N" 1 •.W 0
Ell
0983894-0001
SPRING
UI.I30
00002.000
EA
09U38g3-0001
SUPP{)R T ,ROLL
...,\.131
JOOu2.IJOO
EA
09~3889-0001
BEARING.ROD SUPPORT
JOCJ1.000
EA
J983884-0001
ROD,CARRIAGE
0021
u'J24
STRAP
0033
00001.000
EA
0983886-0001
BRACKET,BAIL
0034
..h1001.000
EA
09839u3-0001
CLIP,CA8lE
0035
00001.1l00
0972485-0001
.ASHER,STEEL-THRUST
0036
JOil01.'lOO
EA
0959297-0001
CABLE,CRIVE
0031
00001.000
EA
0983915-0001
hASHfR,SHOULDER SPRING
O-RING
~2510
0(138
IJ0002.uOO
Ell
0983969-0001
U039
1)\10"1.000
EA
09839JO-0001
KNOB,PLUNGER
0040
00005.000
EA
0912988-0014
SCREW 4-40 X .312 PAN HEAD (RES
A-28
10
LIST OF MATERIALS
Assembly
Part No.
DRIVE MECHANISM(W/SOLENOID LINE FEED)
Item
No.
Quantity
0983811·0001
TI Part No.
DeSCription
Remarks
.1042
JUOIl2.JOO
EA
~972q9",-Ou11
SCREW 4-40 X .625 FLT HEAD CRES
.:043
1I0JOl.JOO
EA
J972988-0019
SCREW 4-40 X .150 PAN HEAD CRFS
EA
0802149-0222
ADHESIVE,THREAD SEALING AND LOCKING
00016.000
EA
",411021-0803
wASHER .125 X .250 X .022 FLAT CRES
(}046
"'0012.<,)00
EA
0411104-0135
~ASHER
0047
J0002.o00
EA
J411115-0044
NUT,4-40 HEXAGON CPES STEEL
u048
(JOCOl.GllO
EA
0411121-0023
SETSCREW 6-32 UNC-3A X .250 CUP POINT
0049
.1000 1.UOO
EA
0772458-0001
TAB,2-SIDE QUICK CONNECT-DISCONNECT
0050
00002.;.100
EA
~C;12q88-0013
SCREW 4-40 X .250 PAN HEAD CRES
EA
0232573-0C01
OIL
0044
0045
0051
AR
AR
*4 LOCKSPLIT
1#43 TERRESnr:
TU
v232J34-6050
LUBRICANT SILICONE GPS LT GR 2 OZ TUBE
0053
0000 I.JOO
EA
0418212-0040
STR~P,TIEOO~N,~DJUSTABLE,PLASTIC
0054
J"OO 1.000
EA
J983953-0001
SPRING.PAPER ADVANCE
u055
O"OOl.uOO
EA
U983929-0001
SPACER SOLENOID
0056
J0002.000
EA
0912S88-0015
SCREW 4-40 X .375 PAN HEAD CRES
005e;
00001.1.100
EA
J4111J1-0057
LOCKWASHER 1#
0060
vOOOl.OOO
EA
0056~B1-0C09
RING,RETAINING,TYPE *E"
0061
00001.000
EA
0983955-0001
LINK,ORIVE
0062
JOOOl.000
EA
0983Q51-0001
LINK,CLAW-ORIVE
WASHER RUBBER 1/32 THK GRAY
0052
IIR
4
MK-1~
FXTEPNAL TOOTH CPES
AR~
OJ63
OOJO 1.",.;,0
EA
~983968-0001
00c4
00001.000
EA
0215~16-0001
wIPERS-FELT
0065
00001.000
EA
0083714-0003
GROMMET
EA
0983938-0001
BAIL QETAINER
~41f453-0021
~UT,PLAIN,4-40
LABEL,WARNING,743/145
0066
0067
1l000l • .,00
EA
0068
OUIlOl.oOO
1/4 I.D.
EA
u989112-0002
AR
EA
0996514-0001
PLASTIC FILM TAPE
0010
AR
EA
0996521-0001
ADHESIVE,LOCTITE 416
EA
0996531-0001
PAD,GUM RUBBER
0071
0001l1.000
A-29 '
1042
UNC-28 HEX,CRES,SMALL
OObCj
Rev.
AS
CT~~"I;;SE
~r·.
~5
~TlC;./I4L.
rae ~AP-
Q~~3:4):
5' =:J INDJCATc5
'..1
~~-,:__
a:.....,P.~M!~~.".~
:&./t'£--;,
TlaHTEN ~14/~ av 0.311 ;;E";T~IAlK TO
6IAhl~5. 716N7£", ALL nTNeli:. .x:.f!EW5
~
Z~.
..c7:; .3/.
o
Nt:::£55_. ~N" t:J{/~T/A16 TIE· oIUP5.
F07 ADJUYI"feN7 ~~o !'Ace ED6l! DF
PC BOAeD. ~£ClL£ TO PWI3 wiT"
flEM ZlU ~~/D£ OF rAOVa ED6£ Of"
aaUD AAL> fCCt:~/3L£ t:HD..
no .3 !IV-LIY.;.
CX~TA" vI crreMZ37)/~ 70 ~ I~"":TIII.L "",",PEJ! ""RE: (lTc'" 255) I'E7Y6:tiN
7' JjJl1
/0
'9373JV
HOLES.
~/-1Ot.JNTI/"I.J H::JLE'S
CCJV~~
I /-
3
REvISIONS
I. CUAI':HftJ6 C:::;MFOA.Clw,·
o
I
4
Sl-E' E:>
~. COA./Or SCt.D'=J!. t)N CQ,4;1YJJ='.... .5JDE.
~."14:;;H TC;OLd,.'6 HClES::;.tJ ~.:; ..... ~/CE~ OF
~ 13CJ1V1D ro PA:EII't!'·.'T ~ __ !'i:~
~,vTEI?I}J6
5
6
7
\
8
NOTES UNLESS
~,/?6
a-ut:)
AA.V
Pr/~.
~awaAJ
H4YIHUM ,AI!!7ALlED
Ca-tR::JAI/!},/T
H/!IGH·~
c
C.3Z.3,
C~4f:.~C~Zc5~C~Z9 CIT~H,e7 J/~
~
0.87.
2A<: ~ QAJ 17E'" Z~1 p:e Ae0CE5504
~.3/5),I'"E.317"'C318).i(e~Z. ~ ~~ZLJ,
'~.3Z5 "E~Zr..),( ~3Z"';~~X;_, 'e:!l!J.3
TEIIMINAl Eu-",;,j'NS.74$/~~ ,vIXlrrMODfM
~e:~ ;;;::~ ;~~~=:::: ;:3~;:;A~:~oeM
B
~.:r 7~RH/NAL ~aCTI('OAlICS, 7~~/H-5 NICCl'f~ ~
"1:-' 7:J Co-OOO3
TERMIAbU I!tu,r/?OJJIC5. T"'~/7"~ W'/CCITT rrooi;f ~
(NOTEl
f.-
UlNT
SlIT 6)
.,37.300-GeJOZ
lERHIAJAl aeC7ROAJ/c":>,
9:!J7.300-~1
70?MIAJAl
PART NU.~t3~R
~
B
mI
7"'3-~ H J r<.!L ,~'r,IJ
(7'.37C1"'l/ if< ",'" ? A '81s c c c.ic D 0 £
'
(9.'>7~"lll "C'CICtIEIEEEE'E.Ef:i£
I
A
~
.3
:5""'"
'!$LOIC
C
:5~OIi!
I
MA!fII(
I
~50'OI
127-.01
124-0Z.
lao -oz.
F
PROCf::. : : : :
~Q
8
A
IS
U5E ITEH 2BZ
00
00
21
_~ ~Hr
•
"'I
~ 'CO~OA:
eLI<
a132.
AOQtT<:lNAl.
JoCXT ASSV
vSEO ()fo
-
W
NAif/( IISSY NI Alii) DIAGRAM NO
,."ROXI4IAT!L1' NH£RE SHOWN
-000/ SHOWN
8
7
6
5
4
3
z.lsol
MAX
o
D
c
c
COMPONeNT .sIDe
B
B
A
A
lIMN .uS" 1ItJ. AMIJ ",1A&III1M AM.
~'IfOX/MAT£L'I' WII£IfE SHOwN --""9'!!'--"'~:l"""'"""_-","
-0002 SHOWN
•
7
8
4
__""'_~~:-="~-'"f"I!'~
o
o
c
B
B
A
4
5
7
£1
3
~~~ .4-40'_3~PH}
o
-~
~~;
1
_
nAr
o
i?
f'lAt:O
5PLIT
AJ/.JT
.--c.---:==----l
I REF
@]
Rr"CT~/j
2~TA~'
VI"",,-' A-A
Y'fCkI N-N
CD-3 • .5HTt.J
~;1oKJA£
:51-~,3," -
:JCAl.£: NONE
~Z,3,4,7
Iif:)TA7EO'il::)"c...,
KOU.~:;~CcW
Vf~C-C
!JUtE: AJOAIE
~Z,.3'''',7
ROUTeD "fOGe""
c
GZDZ
- ~ -_O'.of3BPH
~
I
Z'i.AT
~PlIr
:
NLlT
)
[~
C /~If"
c
QZSI
Sfc~r~~::.1i-R ~DnL~'SI
tT£.~ ZM
Ml'tIII!rAJ
HUT:!»AIX..~(U6 )
#~-4"
"1
.--------.l
r-------......_..,.;---""-"\ \ - - - - _ -__
~
/:
ZFLAT
La
J(
_312 PH
AR~
~
" ' " - " ' - - - - n-ARH WITH LOCATWG TA/5
~~~
~
B
1
1
1
I
/
rQ3/0
REF
At.TERAJATIf:
COAIFI6"RATIOIJ
VI£W
?@~
(i)RU
/-
E-/!
!SCAL':;: NOAIE
Ro~:f£f,·4·ib.=""
B
1., _..1
~'OAJ
D-D
~'-'NQA,E.
~
~/
:31 z,.3;4,7
CITEI'f.u.fJ DCUTED I'VC C~J
~:r::;T
VIEW
12 +.Ol.
"'",
-.01
J)
rilZ PUC£5(·SCOItrSCO.!)
I Sf PUC£~ (-SOOZ)
4S"
~ R MAX.
lUO "LACES (-SX~)
I REF
c_POAIEAJr !JfDE
--~ R MAX.
J"~
A
L-L
~:AJ()AIl!
~CTJO.VG-G
!SCA« : AlIIAI/!
VIEW H-H CALT£IVJATEJ
[!J
:sH2.3,4,7
ROTATED
'iIO·~c~
IIOTATED
A
~Z.~I";7
VIEWM-/Vf
::.cALC: NONE
::JH2.3,4,7
At:>TATl!D 9O"-=c."",
~cw
N
8
7
6
5
t
4
8
6
7
4
!5
3
D
AUDW TO 'Lt:J!A/ .125
TO .Z5 ALONO 1l:P
VI~
P-f>
.:5CAU: NGW~
:5HTZ; ~,4, 7
c
~QJRe
\olIVa IAI RTV ClTl!MZBOJ
OIl. WNeN U!1JIJG
~
B
TII!."'~
TI~'klRAP' JTt:M
~c~
ZH J Z PLACC~
B
VlEwK
.sG4t~·~
:HT.t!,."
WIR~
*",7
1fr,{.:nl.A:i t/IEIJ fT M)IJ
,'!:IC.4lLaexN" C:!J8!T,,~r,tJEL"W)
TA&J!:L
A
A
15
8
7
.J301-Z
E34'i
!5
4
7
8
6
5
4
3
937300i7l
::ENrER P'N
o
o
c
c
B
. B
\
A
AM,t;'K ,fPPROPI"ATr
IUYlSI()N .000
EA
0800523-0001
00024.000
EA
09720S1-0001
TRANSISTOR TIS75
QI02
TRAN S I STOR AST2907 PNP SILICON
'1103 0213 0214 1,)303 0305
TRANSISTOR-A5T2222 NPN SILICON
0033A
QOel 1,)002 1,)003 \ollOl 0205
00338
Q206 0201 Q2l0 1.1211 Q211
0033C
Q302 (,1304 Q306 0.)308 Q309
00330
Q351 THRU Q356 Q406 Q401
0033E
0033
14 PIN DIP
EA
0032A
0033
~
00001.000
0031A
0032
Nl:TWORK,RE!>. 4.7 K UHM 2
0972900-7138
OOJOA
0031
2' 14 PIN
EA
0029A
- 0030
NET WORK,RES I S TOR 6.8K OHMS
00001.000
0028A
0029
IC ,SN98614N DRIVER THERMAL PRINTHEAO
U022
0025A
0028
Remarks
U016
0024A
0025
Description
P
P
P
Ut01 UI02
0023A
0024
0937300·0001
0937300-0002
0937300·0003
Rev.
fo.-0001
Q551
00023.000
EA
0912051-0001
TRANSISTOR-A5T2222 NPN SILlCC'N
0033A
(JOOI Q002 \,j003 0101 Q20S
00338
Q206 0201 0210 Q211 Q212
0033C
0302 0304 0306 Q308 Q309
00330
Q3S1 THRU 0356 1.l401 '1403
J
for-0002
0033
00023 .000
EA
0912051-0001
TRANSISTO~-A5T2222
NPN SILICON
0033A
0001 0002 0003
0033B
'1206 0201 Q210 (,/211 Q212
0033C
0302 101304 0306 0.)308 Q309
00330
0351 THRU Q356 Q406
0033E
Q401
01)34
00003.000
EA
0912455- 0004
Q 101
Q205
fRANSISTOR,SllICON-P-N-P,A5T4029
A-38
fo,-0003
LIST OF MATERIALS
Part No.
Assembly
TERMINAL ELECTRONICS, 743n45 W/MODEM
TERMINAL ELECTRONICS, 74J.EIA!TTY
TERMINAL ELECTRONICS, 743n45 CCITT MODM
Item
No.
Quantity
EA
0912465-0002
00001.000
EA
0912499-0001
00u03.000
EA
0912~12-0002
00001.000
E4
0972951-0001
00003.000
EA
0912962-0001
00J01.000
EA
0912963-0001
00001.000
EA
0974159-0001
0042
TRANSISTOR.2N930A NPN LOW CUR AMP,TO-18
TRANSISTOR.TIP41B NPN,PLASTIC
TRANSISTOR,TIP42B PNP,PLASTIC
TRANSISTOR,EP1580,N-P-N
00001.000
EA
0772637-0006
TRANSISTOR,TIS99
fo,·0002 only
Q402
00005.000
EA
0539468-0007
DIOOE,lN4007 lAMP 1000PIV RECTIFIER
0046A
CR315 CR323 CR325 CR326
00468
CR330
0041
00003.000
EA
0996281-0001
00414
0053
OIUDE UES 1101
CR301 CR302 CR304
00001.000
I:: A
0912608-0001
00534
0054
DIODI::,lN5820 3AMP SCHOTTKY RECTIFIER
CR303
00016.000
EA
0972Q32-0001
DIOOE,IN914B SWITCHING 75V P1V 75MA 4NS
00544
CR306 THRU CR311
00548
CR313 CR314 CR3Ib CR318
0054C
CR319
00001.000
EA
0912934-0008
00002.000
fA
0972934-0014
00514
0059
00001.000
EA
Q9IJ6281-0006
00001.000
EA
0419051-0102
00005.000
EA
0410529-0019
5~
SIL VOLT REG
OIOOI::,IN159A 12.0 V
5~
SIL VOLT REG
RECTIFIER,SS3892/UESI302.V(RI100V (016A
CAP F(X FILM FOIL .001
UF 51 200VDC
fo,·0001 & ·0003
C402
00664
0067
6.2 V
CR322
00654
0066
DIODI::.1N753A
CR305 CR333
00594
0065
CR332 CR334
CR317
005b4
0051
CR3~8
CR33!l CR336
00540
0056
SILICO~
Q311
00424
0046
TRANSISTOR.TIP121 SILICON N-P-N 04RLNGTN
Q209
00414
~
NETWORK.LH320T-5.0/Mt1905CP.-5 VOLT
Q202 Q203 Q215
00404
0041
THYRISTORS.TRIOOE P-N-P-N SILICON TICI06
Q301
00394
0040
Remarks
QI04 Q251 Q252
00384
003IJ
Description
Q301
00314
0038
P
P
Q310
00364
0037
P
Q201 Q204 '1208
00001.000
00354
0036
0937300·0001
0937300·0002
0937300'()()()3
TI Part No.
00344
0035
Rev.
CAPACITOR •• 01UF 1000 VDC,fX.CER DIEL GMV
C307 C320 C325 C326 C330
00004.000
EA
0412645-0019
0067A
CAPACITOR,
.100 UF SOOV +80t -201 FX 01
C323 C324 t328 C329
0071
00002.000
c.A
0972225-0510
CAPA~ITOR,I.0
20~
CERAMIC
for·0001
- 0071
00001.000
EA
0972225-0510
CAPACITOR.l.O UF SOV 20l
CERAMIC
10,·0002
A-39
Uf 50V
LIST OF MATERIALS
Assembly
Part No.
TERMINAL ELECTRONICS, 743/745 W/MODEM
TERMINAL ELECTRONICS, 743·EIA/TTY
TERMINAL ELECTRONICS, 743/745 CCITT MODM
Item
No.
Quantity
TI Part No.
0071A
P
P
P
Remarks
DesCription
C305 C410
0071A
0072
Rev.
0937300·0001
0937300·0002
0937300·0003
C305
00012.000
EA
0972476-0001
CAP,.OlUf,l~
50WVDC MINIMUM
0072A
C401 C411 C412 C416 C417
0072B
C418 C421 C422 C423 C424
0072e
C427 C428
for·0001 & ·0003
0073
00002.000
tA
0972601-0001
0073A
0077
00001.000
EA
0972924-0011
00002.000
EA
0912924-0015
00001.000
EA
0972928-0005
00001.000
EA
0972929-0379
00002.000
EA
0972929-0376
00003.000
EA
0972929-0385
00003.000
EA
0972929-0397
00002. 000
EA
0972929-0411
00001.000
EA
0996615-0002
00002.00:)
EA
0996615-0001
00002.000
EA
0996615-0003
00001.000
fA
0996615-0003
00003.000
EA
0972965-0004
00001.000
EA
0972965-0004
00002.000
EA
0912965-0008
00005.000
EA
0972965-0012
0093A
CAP FIX CERAMIC 68.0
PF 10
~
200 V
CAP FIX CERAMIC 220 PF
10~
lOOV
CAP fIX CtRAMIC .001 Uf
10~
200V
CAP FIX CERAMIC .0056 UF
10~
100V
CAPACITOR,4400Uf 7.5V ELECTROLYTIC
CAPACITOR 2200 UF 16VOC
fo,·0001 & ·0003
for·0001 & ·0003
lOt ELECTROLY
CAPACITOR,1500 UF 40VOC 10l ELECTROLYTIC
CAPACITOR,l500 Uf 40VOC lOt ELECTROLYTIC
CAP FIX CERAMIC 2200 PF lOt 200Y
CAP FIX CERAMIC 2200 PF
10~
200Y
CAP FIX CERAMIC .0047 MF lOt 200 V
C317 C354
00924
0093
PF 10 t 200 V
C003
0091A
0092
CAP FIX CERAMIC 100
for·0001 & ·0002
for-0003
for·0001 & ·0003
C003 C404 C409
0090A
0091
~
C331 C332
0090A
0090
CAP FIX MICA 500V 1500 PF 5
C331 C332
00894
0090
VOLT
C301 C303
0089A
0089
20
(302
0038A
0089
~
C419 C420
0087A
OJ88
MfO 10
C1l5 C1l7 C214
008bA
0087
CAP FIX TANT SOLID 47
C119 C205 C352
0085A
008b
VOLT
C009 COlO
0084A
0085
15
C007
0.:J83A
0084
~
C322
0082A
0083
MFO 10
C313 C355
0081A
0082
CAP FIX TANT SOLID 68
C327
0079A
0081
10~
C306 (,,308
0077A
0079
CAPACITOR 200Uf 200WVOC
CAP FIX CERAMIC .010 MF lOt 200V
Cl18 C201 C202 C208 C209
00002.000
EA
0972965-0016
CAP FIX CERAMIC .022 MF 10; 100Y
C315 C321
A-40
for·0002
LIST OF MATERIALS
Part No.
Assembly
TERMINAL ELECTRONICS, 743/746 W/MODEM
TERMINAL ELECTRONICS, 743-EIA/TTY
TERMINAL ELECTRONICS, 743/745 CCITT MODM
Item
No.
0094
00010.000
0937300·0001
0937300-0002
0937300-0003
EA
0912965-0024
CAP fIX CERAMI C .100 Mf 10:1 100V
0094A
CHO C311 C312 C314 CH6
00946
C319 C333 C403 C405 C431
0094
00007.000
EA
0912965-0024
0094A
C310 C311 CH2 C314
CH6 C319 C333
00009.000
EA
0972965-0024
fo.·0002
CAP FIX CERAMIC .100 MF 10:1 100V
0094A
C3l0 C311 C312 CHit CH6
0094B
C3l9 C333 C403 C40S
0095
00001.000
EA
0972225-0522
0095A
0095
EA
0912225-0522
CAPAC ITOR, 2.2 UF SOV 20t CERAMIC
00002.000
EA
0996597-0001
CAPACITOR.25 UF 40V lOt ALUM ELECTROlYTI
C212 C213
00001.000
EA
0983937-0003
00001.000
EA
0983937-0003
0912630-0018
00001.000
EA
0912942-0079
00001.000
EA
0912942-0020
RES FIX 600.
00002.000
EA
0538425-0115
lIES
00001.000
EA
0538425-0123
00001.000
EA
0983937-0001
00001.000
EA
OS39310-0417
00001.000
EA
0539370-0497
0148A
PWB,PVOLTS
RES FIX FILM 9.09K
OH~
It .Z5 WATT
RES FIX fILM 14.7K OHM
1~
.25 WATT
R335
00001.000
EA
0972228-0008
RES,VAR 2 K-OHM CERMET ELEMENT
R472
00001.000
EA
0972228-0010
RESISTOR,VARIABLE 10K OHM CERMET FILM
RH6
01lt7A
0148
RESISTOR,SEl~CTEO,743/745
R325
0146A
0147
33000. OHM S:I ZWATT fIX COMP
R122
0123A
0146
RES
R340
012IA
0123
15000. OHM 5t 2WATT FIX COMP
R332 R339
0106A
0121
OHMS S' 5 WATT WIREWOUNO
R337
0105A
0106
RESISTOR,9.0 OHMS 5t FX,WW 5W
R330
0104A
0105
fo.·0001 & ·0003
R338
010JA
0104
PW8,MODEM CKT
RES fIX .150 OHM lW It WIREWOUND POWER
EA
00001.000
010ZA
0103
RESISTOR,S~lECTED.7431145
R468 OR R469
010lA
0102
RESISTOR,SElECTED,743/745 PWB,MODEM CKT
R468 OR R469
OlOOA
0101
for·0001 & ·0003
C432
OlOOA
0100
CAPACITOR,Z.Z UF SOV 20t CERAMIC
00001.000
0091A
0100
for·0003
C432
0095A
0091
fo.·0001
CAP FIX CERAMIC .100 Mf- lot 100V
00946
- 0094
P
P
P
Remarks
DescriptIOn
TI Part No.
Quantity
Rev.
00001.000
EA
0972228-0013
X RES.VAR lOOK OHM
R309
A-41
CERH~T
fILM
for·0001 & ·0003 only
LIST OF MATERIALS
Part No.
Assembly
Item
No.
0149
Quantity
00001.000
EA
0912466-0001
RE S, VAR,CERME T-20K.5t
00001.000
EA
0912619-0004
RESISTOR VAR 500 OHM
00001.000
EA
0996651-0001
00001.000
EA
0912554-0006
00001.000
EA
0912942-0013
00001.000
EA
0912942-0039
fA
0'H2946-0009
00001.000
I:A
0912946-0013
00001.000
EA
0912946-0021
RES FIX 82.0 OHMS 5
00001.000
EA
0912946-0003
RES FIX 2.1
R327
00002.000
EA
0912946-0045
00003.000
EA
0'H2946-0055
0184A
RES FIX 150
OHM 5 t
.25 W CARBON FILM
RES FIX 390
OHM 5
.25 W CARBON FILM
~
R316 R318 R320
00001.ilOO
EA
0912946-0051
RES FIX 410
OHM 5 t .25 W CARBON FILM
R343
00001.000
EA
0912946-0059
RES f l X 560
OHM 5 t .25 W CARBON FILM
R333
COOnl.000
EA
0912946-0065
RES f I X 1.OK OHM
5~
.25 W CARBON FILM
R323
00001.000
EA
0972946-0069
RES fiX 1.5K OHM 5 t .25 W CARBON fILM
R304
00001.000
EA
0912946-0017
00001.000
EA
0977946-0085
RES fIX 3.3K OHM 5 t .25 W CAR80N fILM
R326
0182A
0184
OHM 5 t .25 W.CARBON FILM
R315 R334
0118A
0182
.25 W CAR80N FILM
R314
0173A
0118
~
R313
0172A
0113
.25 W.CAR80N FILM
~
RES FIX 22.0 OHM 5 t .25 W.CARBON FILM
0912946-0039
0170A
0112
RES FIX 15.0 OHM 5
EA
0168A
0110
.25 W.CAR80N FILM
RES FIX 6.8 OHM 5%.25W CARBON FILM
00001.000
0lb1A
0168
OHM 5 t
0912946-0025
0162A
0167
RES FIX 4.7
EA
0161A
0162
RES F I X 400 OHM 5% 5 WATT WIREWOUNO
00001.000
0160A
0161
OHMS 5t 5 WATT WIREWOUNO
RES FIX 20.0
R344
0159A
01(1)
RESISTOR,FIXfD,WIREWOUND .5 OHM 3W U
R312
0158A
0159
VARIABLE
R311
0156A
0158
10~
R331
00001.000
0155A
0156
RES ISTOR.@85 C .5W
R258
0154A
0155
.5W
R233
0153A
0154
5~
R412
0152A
0153
Remarks
Rl23
0151A
0152
P
P
P
R234
0150A
0151
Description
TI Part No.
O149A
0150
Rev.
0937300·0001
0937300-0002
0937300-0003
TERMINAL ELECTRONICS. 743/745 W/MODEM
TERMINAL ELECTRONICS. 743-EIA!TTY
TERMINAL ELECTRONICS. 743/745 CCITT MODM
RES fIX 6.8K CHM 5
~
.25 W CAR80N FILM
R307
00002.000
EA
0912946-0089
RES fIX
R306 R321
A-42
10K OHM 5' .25 W CARBON FILM
for-COO1 8. -0003 only
LIST OF MATERIALS
Part No.
Assembly
TERMINAL ELECTRONICS, 743/745 W/MODEM
TERMINAL ELECTRONICS, 743-EIAmV
TERMINAL ELECTRONICS, 743/745 CCITT MODM
Item
No.
0187
Quantity
I:: A
0972946-0095
HS fiX
00001.000
fA
0972946-0105
RES fiX 47 K OHM 5' t .25 W CA~BON FILM
11305
00001.000
EA
0972946-0129
00002.000
EA
0972946-0037
00001.000
fA
0972947-0029
00002.000
EA
0972947-0057
00001.000
EA
0972947-0117
00001.000
EA
0972 cHS-0069
00001.000
EA
0972978-0093
00001.000
(A
0972978-0100
00001.000
EA
0972978-0113
00002.000
EA
0972946-0037
EA
0996260-0001
RECEPTAClE,3-PIN At PWR
00001.000
EA
0416434-0203
FUSE
JIOl
J301
00003.000
EA
0~30588-0008
0241A
FUSE ,CARTRI OGE 2 AMP
F201 F251 F252
00001. 000
EA
0972602-0001
XFORMER,SW RGLTR,PWR SPLV 596UH+I-60UH
1301
00001.000
EA
0972614-0001
TRANSFORMER. TOIlOIO
00001.000
EA
0972445-0001
CRYSTAl,12 MHZ ,QUARTZ
T302
YOOI
00001.000
EA
097246-1-0001
00001.000
EA
0996592-0001
0239A
0241
2.0 A 250V 3AG
f301
0237A
0239
.25 W.CARBON FILM
00001.000
0235A
0237
RES fIX 68.0 OHM 5 t
CClNN,OBL ROW,EOGE MTG-20 POSITIONS
0234A
0235
RES f-IXED 3.3K OHMS 1.0 WATT 51
0972498-0001
0231A
0234
RES FIX COMP 910 OHMS 1.OW 5t
EA
0230A
On1
RES fIX COMP 470 OHMS 1.0W 5t
00001.000
0227A
0230
RES fiX COMP 47 OHMS 1.0W 5t
R317 R346
0226A
0227
RES FIX 150K CHM 5l.5W CARBON FILM
RIl8
_ 0221A
0226
CHM 5t .5 W CARBON FILM
R368
021~A
- 0221
RES FIX 470
RIl9
0214A
0215
OHM 5 t .5 W CARBON FILM
R302
0213A
0214
RES FIX 33
R329
0212A
0213
for-0003 only
R301 R303
0211A
0212
.25 W.CARBON FILM
R322
020BA
0211
RES FIX 68.0 OHM 5 ,
R317 R346
0207A
0208
RES F I X 470K OHM 5 t .25 W CAR80N FILM
R328
0204A
0207
18K OHM 5t .25 W CARBON FILM
R324 R345
C199A
0204
P
P
P
Remarks
Description
00002.000
0192A
019<)
0937300.tJOO1
0937300.tJOO2
0937300·0003
TI Part No.
0187A
0192
Rev.
01 SC. SOUND-PI EZO-ELECT 3200 + 600HZ
[}SOOI
SWITCH.TOGGLE,OPOl 3A/250 VAt 6A/120 VAt
5301
A-43
for-0002 only
LIST OF MATERIALS
Assembly
Item
No.
0243
Quantity
EA
0539544-0010
SOCKET,20PIN IC lOW PROFilE SOLDER TAIL
00002.000
EA
0539544-0009
SOCKET,40PIN IC lOW PROFILE SOLDER TAIL
XlJ012 XUOJO
XU015 XU018
00001.000
fA
0539544-0007
0245A
0246
00001.000
EA
018511J-0001
X SPACER XST TO-18 CASE
00001.000
EA
0533599-0014
HEAT SINK,.75HT 1.29W 1.63LG flEC
XQJ07
0250A
0251
SOCKET,24PIN IC LOW PROFILE SOLDER TAll
XUOIO
0246A
0250
C~PNT
PN 533517-1 IS AN AlT PART
00001.000
EA
0999429-0001
HEATSJNK,TIP-POwER SUPPLY,SOFT START
0252
00001.000
EA
0999428-0001
HEATSINK,DRIVER
0253
00001.000
EA
0999254-0001
ClIP.HfATSINK RETAINER
0254
00002.000
EA
0772635-0001
CLIP,FUSE
0255
00001.000
fA
0983836-0001
CA8lE,HEATSINK GROUNO
0256
00001.000
EA
0972493-0001
CABLE ASSEMBLY,FLAT-FlEXISLE
0257
00009.000
EA
0972487-0001
JUMPER PlUG,CONNECTOR BLACK
WIRE 22AWG ElETRO-TIN-PlATEO,COPPER
0258
00000.100
FT
0411400-0022
0259
00001.000
EA
0983910-0001
SUPPORT,TONE GENERATOR
0260
00016.000
EA
0411027-0B03
WASHER .125 X .250 X .022 FLAT CRES
0261
OOOOS.OOO
EA
0411104-0135
WASHER.4 LOCKSPLIT
0262
00009.000
EA
0972628-0001
wASHER,.4 .11510 .20000-SHLOR NON-MET
0264
00007.000
EA
0411101-0057
LOCKWASHER
0265
00008.000
EA
0972779-0001
INSUlATOR,HICA COATEO,TO-220 CASE
0266
00001.000
EA
097298B-0022
SCREW 4-40 X 1.25 PAN HEAO CRES
0267
00006 .000
EA
0972988-0015
SCREW 4-40 X .375 PAN HEAO CRES
0268
00002.000
EA
0972988-0019
SCREW 4-40 X .750 PAN HEAD CRES
0270
00003.000
EA
0411115-0044
NUT,4-40 HEXAGON CRES STEEL
0271
00006.000
EA
0416453-0021
NUT,PLAIN,4-40 UNC-2B HEX,CRES,SMALL
0272
00002.000
EA
0416925-0400
SPACER,'4 1/8"LG ALUM ANODIZED
0273
00001.000
EA
0416925-0412
SPACER,'4 7/8"LG ALUM ANUDIZED
0274
00014.000
EA
0972632-0001
STRAP,rlE DOWN,CABlE-NON-STD,0-1-1/4 D.
*4
EXTERNAL TUOTH CRES
0275
00001.000
EA
0972621-0001
SPRING,RING
0276
00001.000
EA
0972306-0001
CO~ER,ROUND-ALUMINUM
0277
00001.000
fT
0996286-4455
WIRE .20 AWG GRN/YEl
0278
00001.000
fT
0236528-0000
WIRE 22 AWG 1 CDND WHITE TEfLON SOLID
0279
00000.500
FT
0411400-0018
WIRE~8ARE
AR
TU
0417559-0001
SILICONE RUBBER (RrV) DOW 3140
AR
PT
0417200-0004
PRIMER,SILICONE RUSBER-RED
FT
0410499-0008
INSULATION SLEEVING,TEFLON '18 NATURAL
EA
0996521-0001
ADHESIVE,LOCTITt 416
EA
Q999430-0001
SPACER, SWlTCH
0280
0281
0283
0284
0285
00000.200
AR
00001.000
A-44
P
P
P
Remarks
Description
(lO002.000
0244A
0245
0937300-0001
0937300-0002
0937300-0003
TI Part No.
0243A
0244
Rev.
Part No.
TERMINAL ELECTRONICS, 743n45 W/MODEM
TERMINAL ELECTRONICS, 743-EIAmV
TERMINAL ELECTRONICS, 743n45 CCITT MODM
SEAMLESS
TINNEO,18AWG. COPPER 8US
LIST OF MATERIALS
Assembly
TERMINAL ELECTRONICS, 743/745 W/MODEM
TERMINAL ELECTRONICS, 743·EIAITTY
TERMINAL ELECTRONICS, 743/745 CCITT MODM
Item
No.
auantity
TI Part No.
Part No.
Rev.
0937300"()()()1
0937300..()()()2
0937300"()()()3
p
p
P
Description
Remarks
0300
RH-
0301
REf
EA
0931301-9901
TE:ST PROCEDURE, TERMINAL ELECTRONICS
0302
RE:f
EA
0937302-9901
SPl:ClfICATION, TERMINAL ELECTRONICS
0303
REf-
EA
0984023-9901
LISTING,PWB INTERFACE SIGNALS,1431145
EA
0937298-9901
DIAGRAM.lOGIC,DETAllEO, TERMINAL ELECT.
0304
00004.000
EA
0912988-0016
SCREW 4-40 X .438 PAN HEAD CRES
0305
00002.000
loA
097298A-0014
SCREW 4-40 X .312 PAN HEAD CRES
EA
041~886-0001
GREASE,SILICONE,HEAT CONDo (8 01 TUBEI
0306
AR
0307
00001.000
f::A
0983831-0001
wiRING HARNESS MECHANISM GROUND
0308
00002.000
EA
0230029-0001
fERRITE 8EAD,SHIElDING,2900 GAUSS
0309
00001.000
EA
0931300-5001
AUTO INSERTED PARTS LIST FOR 931300-0001
0310
AR
EA
0996069-0003
ADH,SOLID,THRMPlSTC 25. BAG ANAEROBIC
0311
AR
EA
0411486-0004
COMPUUND SILICUN RTV TRANSLUCENT
00002.000
EA
0538291-0011
COILS,Rf .68UH .60 OHMS LT4K349 FX "LD
0313
00001.000
H
0538555-3399
WIRE 22 AWG HOOKUP UL-1609 OR/WH
EFTE
0314
00001. 000
fT
0538555-3499
wiRE 22 AwG HOOKUP Ul-1609 Yl/WH
EfTE
0312
0312A
ll,L2
A-45
I
e
J
7
I
6
!
!5
I
4
I!!l nlEs.
TRANSl~T~RS
HfAT!INr(S.
o
M0UNTcl)
§]
RESrSTo1JRS
~
WIn~
~PECl~lcl)
N¢ VI.LUcS
,,/oJ
IN!TALLE4J
lNST!> LED, r(ll1 rUTU/?(
Rr;V·A' B~"RPS WILL
FERRITE
REV B
~
>5V
i c
B'"
NOT HIIVE
PtlNTS
RuN T¢
(TtH
C3"
"R
WIlL f:!
-+160V/{.
BE.AD INSTALLED ON STAKE. PIN FOR
pce'S
ONLY
£. ret! RfPLACED WI7t! COIL (<;BMJ.) OR FERRITE.
8[AD':> (2) 011 RU E. f LATER PC8'S
ALL REV Ai [ARdER PC/<,'S WILL HAilE R373
----+~J[~c-,--------------~1~-c-6-,c-8-,-cl-,,-c-,4-,-cl-8,-C-I~-'(-2-~-(-21--'~
T:Jv
__
~
+IZV ____~--__- _ - - . -__~----Cf.
1I
C4
CI7
GIt4>UND IS APPLIED
DeVICE T'fPl,
PIN"
AND
DeSlGNIlT'I/f,
T~
ALL
(/)1'
pr'~
"'·PIN
SN74.
14-·PIN IC'$
7 q,~ IiLL 14·PIN IC's
IC'S.
Ie
A"l> REFERCNCC
15 SHg,W/J AS F"LL0WS;
~~
~
U21
00 "'Nil 04 .. DEVICE TYPE
4,S,AND"" PIN AlUM.HR.S
lJI4 AND U21 •
5.
RfSISTt1>RS
,.
DlfJ>DES
7.
AMPLIFIER.S
9.
(/)N
-12V
REI'EI!EAlC~
ARE
NItJT MARKED
N~T
DCSIGNATItJR
1/4 WIlTT,
ARE
MARKED
!!"7••
IN9'48.
ARc
RC4~~8P.
RC45511P
f1ND
AMPI.IFIeRS, PIN 4 IS
PIN 8 13 TIED TItJ -+-'2V.
SVM6(/)L U5;O ""'R 'f" NUMBERS
HAYE A :;QUAR E PIN.
TI£D .,."
9.
0
10.
SHtfTS 8 AND 9 SHItJW THE Mt>D~M/AeI/)USTlC
Ct1lUPLER
ClRCUITRY; SHEET II 'lPPLIES T(/)
937298 - 0001 ASSY, I.ND SHeET 9 APPLIES r(J
937298-n003 ASSY.
1/.
/oJ(/) TEST PIbINTS
PIU~R
4PPI?,OVAI.
%
MAY
By
WHICH
I!E MrtlVEl> WITl-IftUT
TCST
'::NGINE:CRINu.
~b'
SPARES
(408,C4-15, r4Z" 14<9
___
q~8
____---.
~
U4
f~_9_J'~~8b
a
-5V~13
l,C
TI
o47
+BO%
-~OYo
~
UZ7
I
1·
~
CIS
047
,.-BOY,
-£01'0
~~
U"
T
-'2V~---------------~--I~~--------------'
1
-'i~~
(5
.047
o
PIN NUM~ERS,
~F
I
•
e40 I, (1.,4 (425, (430
•
•
•
•
•
•
...J..._'_
.047:~g~
1
I
,
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _~~------~
___~!l_·___·__.~_4_7_·~_~_g_~_:· ·_~'F~
~~i_~_gV______~~3_fii I~gi
A
a.
WlTH
T• • • •.O~7;;g~ • • T
L ._ _ _ _ _ _ _ _ _ _ _ _ _ _•
I
'i..
4.
US! "NLY
INSTALLED. REV B PCBS WILL HAVl liTHER R373
OR .IU!.IPE.R W,IIE REV C WILL HAVE. .J&!.IP£R "'RE.
RllI. E f LATER WILL HAVE ETCH.
c
ARC PREFIXED
IS APPLlCl> T~ PIN 14 ~F IiL(
PIN '" ~F ioU
PIN Ie '$
AN~
FCl>.
115V
JUM?fR WIRe. THESe
~
ALL DEVICE TYPES
vee
I)PTlONAL AtM AND IS
C(}NFIGLUI.ATICJN GUILE
AS:EM8LY.
U'JlT
CrtJ/./IJeCT(D
[!§]
t.
2.
2
SPECIFIED;
IS USED ~OR
INSTALLED FR0M
!ill ",or
[ill
NOT
lila
AT
-
If)N
NECfSSARY II SE(;C'fD IUSIST"R. IS
INSTALLED AT U';lT TEST IN L¢CATI¢N
'(>4id! IIJi/ HM AS RCQUlIHIJ m ~RD(R.
T~ ACHUVE MAr >(/SPACE SYMME7RY.
IF
ARE
'I
ARt
I§)
J
3
N0TE5: UNLESS (/)THERWISIf.
c
7
8
6
5
4
3
P0WER
+/2. V
.... 3011
SUPPLY
-sv
+5V
-12 V
D
D
I
TEST
E 310
L
+30V
<324
(3"
+12V
+5 V
£328
-5V
P¢6~
020
ACC~5S
PADS
- 12V
L¢AD
c
c
"'ICRliR
I
33(
-ODO,AlSY I
L - - - - -~-_-_-_-_-_J__R_L_2_ _ ,<11
SH
5
J403
I
I
B
RLI
B
I
I
CI RCUITR'i
RL2
I
I
XMITDATA
lOt ~437
+5V
I
3.3K
I
~/W] I> "
DSI(/RL2
I
I
I
+5V
'** R435
3.31<
DV!.2
DT/XI
I
7
I
I>
I
4-
~--+--+------------------~s
I
I
I
J402
A
A
937298
SHUT
8
7
6
5
4
2
1
f
5
6
7
8
4
3
SYUC
AO
~:_Y'.-
II
+5V
111>".,1-
',I
h
I '-",
II}
14~''(''l-W-]'
DO
I,
III
I
I
I
I,
I"
L~~
L~~
+5V
15
I"
I.
I
L~-.J
»2
D~
~'ACCESS
AS
A~
1\5
A7
117
i
[41
~T¢.5"5
A/O
Aq
£39
OJ
.4.
rc;.----
A8
TM5
TM 5 5504
A3
1'
AIS
.e
"
5£N5"1I
INT
CPU Hf>Lb
3"
35
H
3)
32
IN.
IN7
RI"
5/0
¢UT Z p=2"'---..:.I1>_R_2-_
¢UT4 t:>-2,,::S_-=JI
INZ
H')
IN4
RESCT
c
2:..:;5_-..:.lC
21 +2
23 INT
cwo
F~QM
/43
20 ~ I
42
:70
::0'8
'--¥.-~~:~
+1
ct
E42
n,
,,--==-_'-=->" A Z
SYNC
C
Ell
t17
o
~,'f.'
ti1
-5" -----:.. "B"
" II
»
~TllS>l.5
All
+ 5 V - + ,Ie
+/2"----2. v6~
l1"-'Z9_..:.CI...:..R5=--_
IN)
IN'"
INS
INi.
I",'
/l>Un. r>"-30_ _
e_~,,_-_
31
'J,R7O
TI/¢
40
XltTMTA
T¢ SH. 5
~-4,- ~~
a
FR\!>'"
D3
• 1>4
8 OS
;,1
1>4
D5
ReAIlV'
SH 5
10
ll"
, D.
01
•
B
D7
UI8
RC~Rl
(1-"_55____--'
Wi?-
1'''
now
::0 THRU D7
1J7
TPtJ,M
5
5~.
..-_ _ _ _ _ _....:D:....O___ }
I?CVlIATA
HVLIlTA
{'
DO
j
I'~-~~~~-.~
_ . _ _ _P_k..'-t._M_-_
D3
b4
D5
8
7
6
5
4
S~
5
£30
g:
EZ~
fZI
E22
"---~g'-';'----~ ~ ~ ~
A
TqJ
A
~_ _ _8_ _ _ _ _ _~1_____
7___________ ~1~~__
6 _ _ _ _ _ _~1_____
5 _ _ _ _~!~
'I :;:-;~~=~I ~
'I
o
~~u:45I
~'~TI
i ~~':I
,
~
.70
IODp~
'L
"
I
~t
T3
I
DIVIDER
,3 ~;
L'
~2P,15 ~i-
-r-
CLq,CK &.
"
I'
~2'f;5N153SD 7lRZ ~ c~:pf' .':'i ~I
CK,
i-
oF
r-~ ~
;LK .,-
~4
1,''----------:-,:---- ~:--~;~t2V-I,
IJ , r;~P"~ .O~/j 1:1 ~fV
~t:l, ,IH I?
IJ. ~~ ~.~ g", glg'.!!
1t" 175 J~
C7 ';
---'V
-
~~
C7 ,tV
,..
:;'~,f
CUI +z.-
~+5V
CLKtO
____4~_ _ _ _~'_ _ _ _~3~_ _ _ _~1____~2~_ _ _ _~1____~1~_ _~
fA'0M
C9
66pt"
~; ~I
"+sv
,5H
~'I
.2]~
;;_~1:__ ~_, f:..e~
I
{'f.MTOIlTA
RLYnATA
_
I
,
~
~~\II
~,
,...~
rnAicR 12
13 ~~5Ib9G:
~4 "JU3
Ub
ACKN;;,'JLEDGE
&. READY
G
~
WiA
L04
INTA
u4 E>
00
»
0,
,
o
"
IF.!.!.11_++-:~-=---,
0'"
Ell
R;:... :l-
un
~
Rel1l-
I
EM
~'"
Ttj\
UII)-CO
'.1
7
LS/38
ABC
1112
1 2
II,;;:
L
~
Uti
07UMPERSINSTIILLWI
01'1 PORTABLE
I
UNIT 0NLY
I
(SH SI-i. 8' 'IN!) 9)
I--
,
l
5
U7
6
--~-~hSJ2\
J, ~O
13
Y1
us
12
f~
f
to
XlIZ
5
(UI:'~')
13
~
~
14'~
3
cnlSTRBESH " )
CTL2S~RB~~R~
(U/':>-/8,SH.4)
PHDSTRBE
t
J
L ___ -~------_~DDRESS ~EC~D~~~~.:. _ _ _ =_·~
XZ>3
~
______
I
I
I
I
I
I
I
I
I
I
I
J
AI
(U'N"
110
~
2.
98"'4
UIO/
15
(I.M-IS.
+l5~V~
-5'1~ cloe
GND
CIO'
.047
FR
~
-
12
13
14
15
JIOI
7
12
Q~NC
I'Re/lllStl.4
J~
'-1
---r---_
~
l~
::,~ij~
2Jt:'09,
L-2 -
~'Of-----r---..~
6' U
II
-=---
C 203
T¢
SH. 7
ltF
I
(UA's"OlS )
5
~ :c;:,l. 7 L,CR
.~
T
A9
LE58
CIOI
L
CJ,
(UZ5-9SH")
I
+
CIO'
22UF",
ae ~8
W8
(UZ~-9
1£5
6 EIS
c
'PWRCLK.
1[1
~IO ~t~;i~5V:~-5V:~G"~d:~
tOI
(U6-I,SH.4)
~
7:TPI'l
y",
CDET
£02
<;>
L53?\.U78
-F~ G.lA
SH...."
J
C'fR[7
~az-'" l' ~z 1314 1'5
r
'1
(.,
(;"11
20
1£ 9
154 131ZIII0197
s
~
"
y
I,
I
I
I
-;:;f-;;;-f---------_,
+5'1
IZ
"!""!+-12c;.!~
r+---+-+-lH---______-+-_~P,~RO~M:.:.::.-
J
C_ 4
I
___
E(O~-_~~++_--++_I_+-_.
510
/'1
~, ~, ~:
I
... Ii Ill'? -sj
~ I ~I 0
J
+5"- 5
14
r~1-
I
.pc?
I
~i
- -
~
Q'r-
9QCUB
1£16
I
I
I
RCVO
PW/?CLI(
~
B
PHD-
~ 12
I
.
I "': "': '"
p~391
LUI...J
'_~
-=
~~j
" - - - - - - - - - - - - - - - - - - - - - - f - - - - - - - - - - - -l ~
__
I
J
r~
I,
'"'N
NC.4-J
.
+ 5":15
RI9
SYNC'
1(,04 I
U7
Ri~8@
I
,'~
I
0
..
1
L ____ _______ ~~~_~B ~
I
I
XMTD
1
,PW1{CLI(
WAlT-
ZH':: I
DORE. IK t5V
I
6
I
OTR
~13
o
,
'5
Rl z
6 L \u '" ~
TERMINAL
INTERFACE
J40H/ (51-1 c)
---------------'
L...::
___
____
______
_ _ _ _ _ _ _ _ --.JI
5
EZ
£9
__
I/C~'~~"ZI
_.Y1 I..
'LS'" 12
I
2K
E>
,,1
INTERRUPT
FRtlM S>I.4
/I
c
__ -Y!.J
2Z0
I
~4 ~:4 ::~::
-7
~:
Ria
~
.-- ------ ---------------- hi
I
II
~
II
I I
WAIT
/I
(u/S.5)
,II, If-I (~~~~)-I
-=
Uc5-IO
:1
;- (UI6-40)3LS~.ffi5.E
I'II ei
STtPPtRB
~0NLlNC..-
L.o-
~I I~
~
121
•
L..:OEIZ3
I) 20
Xlii
~E"olI" 10
:::
t::o!I08
,)8
~C/tt
I
I
'fDI
~EI09
I.
PRINT
HEAD
~I
DRIVC/{5
19
9
12
I
X .... 4
.,
~ E 107
~
)(1).5..-n EI20
I
-
17 7
I
I
17
:5
'(1)7
r:r--:c
4-
Yb~ r
3
YZ>S
ro C/O. I, 4
it
'1'1>4
roe"" LJ3
r
t:fJ:>
L...r--r::
98b/4
UI02.
~el"5
I
~_
r-,
B
-
5
£117
1 14
A
I
7
8
6
5
4
U7-
~
5~
5
~
CTLISTFlB.-
FR(/JM
2
3
lu
~
'"
In
I.u
I.u
000
001
PHC
PHB
---PHA
OD2
003
004
OD6
0
[-
o
--- PRlNT
Pa\WER.G~D
FR(f;M
$;-1 .3
Ui
lu
LJ,-'
'" '"
In
't
lu
I.u
T0 MECHANISM
ORNE ELECTR0NIC5
(5H. 7 )
OROUIB-24 -ORI -
UIB-25
~~
OR2 -
U18-2b
~!
'<'-'
B
~~
~~
~
R3
510
0N
c
~~ ~
Nt:.
NC
CK 4q 14
NC.
SH. 7
DSI
3~OO
T0 U4-15-i;,
(MTEPPEF\ B
STEPPERA
U253Q \I
CTL2STRB E-
+12 V
R414 (/IN ~Ii 5
15
IQ 2
C'.Q 7
"D
510
~S
-
123D
13
40
4
/0
OD2
003
FRlbM
»
0,
4q
175
000
001
ORb-
UIS-30
71/) R252/RC55
(/IN 51! 7 ~"'D
lu
CLR 3Q 10
OR5 -
10;:)
C
~
~
OR3-
UIB-27
)(
,I
.---"7<-""><-~..___'_':,...__.Jc.:;.....L:.,
L~~============~
5
3A:!
~3Y
~~:
~:
U~
\
- - ---- -- -____-----t---,
R24
-=-
.,8K
l
KEYB'1>P.RO
C~9
CO- Je.
R2S
C~=-
",81(
/
C-'-'4;-=-------')
;~
13
C'=5-__----~21
CL:6'-=_-----4 B
1'5V
r-- +5V
-.J.., W--
R6-7
"UB0ARD
MA TRI'l.
R~W
SCAN
LINES
I
A
....---(NUM--) 24
17}
:.>:-,2~--_ _ _~~0:=-=:IHI::....FT=--~)
'--F--'3'----_ _ _........---~4 ..-----(FLDPLl()
2;
~
~F~5~--_ _______~v~-~C~~C~P~S~~ ~
+SV
KE.YBVl,ARD
FUNC TI0N
K[YS
Rle
10K
PI
N MECHANISM
4
3
I
45S'(.
'"
RIO
IK
()'o
I
0
ul!>-a~
JI
I +
1)-7---- 5V
I
Q.f
(SH.4
A5T~~2t
(z. PLACE.S)
EI9
~~4~1------~~-4
TACH/MqJT0R.
5ENS0R
II
'"to-'"
SEN5~R
, - - - - - - - - - - - 0 - - - - -~
£1
82
1/4W
~CTRL--)
q)
5
[2
L + - - - t - - - - i - - - - - - - - - - '
-12 V
£IOZ
P-GNDC
GNOS
Jf,b-,' ~
JIO/-3
FI03
+5~
IN4152 (2)
o-.:...J
TEMPERATURE
COMPENSATION
*
1N914B
eRI03
I=
M¢TiJA
R2ll
2ZO
C
r-:::~-Ir---.() ElIl PVSWB
~*-~------------------~
eRIOI eRIOl
~
C ZI+
EI18
F~------~-~~~-~~
uz,-z
...71\
@H.h)
RIDS
RI04
8to
RZZS
r~4lM CJ5H-)
P~T---~~~~~~~~-1-""""'+{
rROI~
-,p....;;G'--_J
+/2V --....-----~.;v...."....--__'\,IV'v---_,
RIOS
2K
B
+It
-5V
CZII
1'1'.
R207
953
1"I°cm~ ,
C213
~
______________________ __2t;"fF
__
~
J251
P2S1
: In:
r - - - -172
I
~r
CR
HfAl!
LIFT
,:,t>UtJt>lli
__
STEPPER B
~Et5'
e! ':
J25t
P252 WHT I
r---~---+------------~I· s~1~~~~
1N4134
I
C212
-±jt--........---o E 2 55
I
I
I
L--~____+-____ ~b~,I__Y~E~L~/~
25MF
A
-4~
CR~51
IN4934
:zo
I
L_...J
3W
R209
ZK R20f>
12.1 K
{~ ~: ":'_1~w~ ~·~ ~0~)~ ~ = ~_-*___~____~__",,,___~
,.,..
-Ilo V
liD I
IY.
v
(ut.-/o)
JZ!>l.
ft1
RZU
10K
lez03
,..,....47
+
I
sov
r-I
liD
1
1 X 1
1
I
130 I
I
PWIULI( T¢ 5115 40 I
(U~8-8)
I
1
I
1"01
I
I!>o
1!252
U55
330
200
B
~
0-
'"
"N)
0-
Q
L_...J
BLKI
+5V
EZOI
J201-1
MOT·R
'-I
R233
.5Jl
SH 3 (Pew'~
SUI'/>lY SC(Tr~l()
PF/oqsscM
(d~.h;l
Jis!
A
RED/
F251 ________1'zse
+30V
~
____-o~9
~~______~____-?4>-__w_w_r_2~/_Y_c_'_Z____~
20,51'1
'------------------------------------------------------------------------------------------------------~-o
[25<:
9372.98
c
2
4
us
AC~U5TIC
C(JiuPLE~ /
MDEM (0UGINATE M01>t)
R4fl
0
C409
R444
'NT/(
RECEIVER
{F'MK
F'SP
L41t
'li.
r -
I
I
cm7t - - - - - l
I
Z
1140
I
TP
I-
U40' ,. J
I
£40&
MI(F( TR.
TRANSMITTER
[)
2U5
2015
("MK
lFJP
1270
1070
£4'0
INT6lTI! TP
~FmiNcEINi:£6W0;r-c~ .~.~
I
CR4"
el1413
"."
1(11(
1147., '01(
JH3
,lt4SI
, .. ~
c
e
.'2V
.. -:J IA/SrAUIl>
I
~!·I>I :~:,. -:!~~
L
_.J
B
B
A
--==-=:..=-:===-=-=---_______---.___________ _
L..._ _ _ _
____________
~~.
____
~~~E~\~~
____________
e
6
7
4
2
3
CCITT
AC~USTIC C(/)UPLE.R/M~DEM
(0~lGJNATe
r---®
Mt1JJ)~)
rTf/I; SHE iT APPLIES T'jII'
IL4SSY
937300 -OD():S ..JI
__________
r
I'M/(
o
"50
RECEIVER lFSP 1850
TRANSMITTER.
FMI<
{
FSP
'180
1/80
==~~-------------------------------~
~ 452
J40)
~~____~~/,~5~Kr-____-+~______~E~I_A_R
__
CV_~_A_T_A____78
c
c
.'2V
CARRIEf
-I'LV
A42'2
,5j1,
~-----
~
R423
8<'!...4__r-_---.5-~--l
o
9J.J"
,.,., A= 5 ••
~c~I.Ol(d
Q&.1
•• 67
2.7
."/2 ~
'O/(
T'II111."IT
,-eVE.
""JUST
"
I
R4'2
7S~
-."
'40'9
lJO
~---=~~~~--~-~~~~-~~~--------------------~--.----LI-_~=_~~------------~~--~_-_-_-_~_~--~~~
A
8
l
2
~
c... -.:- "':; CCMf'Ol'.E',T l.£»O)5 ~lONAL.
r.c. "':IT =..0£:1'1. eN c.DMf'ONE,~i SlOE.
"'IS'" -OOLINe. .a.E~ ON ~TH SIDES OF eao.RO
s:._~E'"
\
6
':i~~'oAP-IN sAFETY CCM:R
INSTALL R5D5 (In:~ n41AT LOClfTICIIf (11403;
IN!>TAU (431 ClTEM 'ZIAr LOCATIM R4=6·LEFT
RII£J R43'-MIOOL£: \5TJlLL CR4ZS CITEM 54)
wrT'1 CIITHODE HO Q40'Z.-EIlSE AND IINODE
INltJ FHo TllRIlU(;H >'llLE LOCATED D,fiE~TLY
SHOW THE "4" Of: Tnt C;403 51UOCI?EEN;
,~STAU CR4Z' (ITEM 54) WITH C!lTH~DE I/{TO
R4;B-LUT AND /".IreDf IIITO U40~-4.
(ITI:I'12'4);
TIJI. "'~A7e:C .:c'lTACT £:>10 Ci'" CAOL.E
~ ~"!(ITEI1 2-4+) TO E:.~ CAA!:>SIS c,'IID.
ITEN L"!1'3
IN eOMD.
~
[[Jr:.~t~~';~~ ~5.;~T~5!r~D~T \..NIT CONFIGUfU.TIOlo;
AT
AIID -OOOLI
Uf4CJ8~,- I(}K~CIIUPDI;TED
'%-~,~~ ~~? A~r'b5!1~sf;T~DuM~g~~~2..~ ~:i4g;E~(/.-y,.~~V~=:'7)~~~:)5 -H~,l( .'t£.:'~~~4 AI. ON -D004 ONLV] !.5 ~~'ttv1-Of
"";; c.DNTAIIJEO III rio. 50uJ SEil:E5 lM'S
GROUND
~ :)O.J)ER ""IRE: TO K>l.E. IN
Iii
IiZI
lit
F,,-
or
Y
~J6NT AUP U#13 ,'IAI;:' 1A/~T,4" <:433
("ITEM ,. (;7 ) OA/ QUa/CTaR :5IPr.IIT U4/~
F"U$£ R:l!>ITION.
i
if
Ii
HFF't. !3OA..~D ~ =>£c.:JR£ TO P"'w'B '\NITH
=-
All
J'7U5" ,11"'1)6.
~
'O.3N-l.B5-
c;;;ex TE~1/T~tTI:gE,,{;;;';~~o~O AT
APPROlCIM"TLY +siTOw'ARD
~ ~~~",,~~~~~Z.1-.?2 ~ErU~T''fi~L'F(':«~
~
.!.I'1"'ERS
INSTAlLED A-r L.'NIT
THAT
T'£
N3
13 m:'"
E!
§j
&AL TlIR£AO~ ON ITEM
2,,,z. PER
I!i
~B3B4'-OQ04
~53e",,-aco2
~E3~e,.-tJ-eool
""lcml1:1
c
, ••• ?1
? 5"7
CM205~:I«)1j) 'W~
(., PN ?F" ,-[ II 133 C 134 OF • 1 ;21 (539812-0030 RE5P
lZI:£LE-t:, ITEM lOft 20:'
C31 I'N 0< -HI 1331 134 OF· 3 WAS
~':'1eI2 - ))42. f 539812-0043
R£SP (0) .·)~TEP Uv l.iVEI.. I!>I..OB4I-DOO! TERMINA.L EL[c..T"'ONIC.~, 7.~ W/A(OU~TI( CPLR
YEAR: L-...T Dl6IT
I"'1C)NTH: 01-09, ,o-IL
EllAM .... E. MAY,197b- HOU!>TOH
it""""
98';84'·0005
983841-.9004
rOLLO,,",:;,
B
9B~a+1-8003
ge38+I-OOO~
'8~."-1100!"
f~-a:p':./~~~OP~;,*,Lrc~~\1:HN IlS,M ~:S,;c;. ~~~rJ~OI~t~~DfrTEc:ct:.Jr ~~T.
~ ~ ~,~,.,'6,~hCO~~~HAP~~ltgfE L~~'r~u~~~~'if' ZE
L
~~g :~=PT:::~;il~!J;~:r-3
_OTO INSERTED TAPE F5i1!3a~'
TEP'j "AL ELEc..TF!O',::~ 743 £IA/P'Y(..JAAfAI
TE.RII,"IAL rLECTP:·. c:.U3 [IAITTO.t/tPA,J,
rEP'r '{AL ELECTROI:,~S.7~oI745 CClrrl.JI/DAAI'
TEF"! do!.. £L£CTR.)\4'-:'-: 7431745 UITT~JAP.iN'
TE?'I \"L ELECTRon [5 743 W/MOGE'A
T£?Yo'VfL fJ..ECTI?DNI .;.~ 7A, W/MODfvl
TUL...,J"tA!.. £L.£C.TRl)N"'-~ -43174-5 ~ IT MOD£M
qaa;"-CJ 'ZIUPDAT£D REV LEVEL 1:l
CN4'l1l1~ lei EJ 'WoUJ..J.I.
~£R EHENSIVE [NCR
::M~C.::;'(ZJ UPDATED REV LEVEL
EL~CK
CASE
CONF"IC,:"lI"TIOI'I IF REQUIRED.
2~.98.99.IOO,'~.14941SO TO &. I%T~!..LEDW1TH" CLEARANC.E CF
.cZOM!h)1 .1t.::l,l"'.AX\ BETWEEN COMfbNENT BOOV AND O\Ne (ITEM I)
I"'''ltIMUt1 INSTALLED H£':,.IT CN C3a~. c.~.!+. c..:.z.e. C.3z.s (ITEM «M') f::> 0.87.
or·:;'·-o
r.1I"'23~"!(E)'t} '/f.uJ...JJ.
UH?LIISEl
CR~\
~TAL.
I
fIlHVISD PER EXTENSIVE ENCR
~ J5TM£:NT ~.,.Q.JLD F:A.C.E EDG.E c:
~ +'1f!1t';3~f.i'4f a..l)t3?H'D.~.5W~"T8",,~":~ ~'~EEN:::'~"r'~...~'frl-&I't£W~
~
/lEV
1!LU.K WI/ODED FLIIG NOTE
38 SH Z d 1 (lJFLlIG6ED ITEM llJ
NITH N~T£ 38 lM (I) PlY OF fTEM
" ..AS }7~45~-I: Y{NDOII Pit "~5
Tl-TM;~7I)O-i!A4701 (l)PN CJF
ITE"" Z() NAS .,7Z4SS·00n: YENDO/?
?II WA; TI'TMS47(}(J-~1I47CJZ (3)
ITEM ZZ; DELETED Zl8 ~2ZC
lEVEL.
~ l"-tIX311A1iJ-at:.cJS t#./tY) IAlST.I;LL JUM~
WI~E. f/TF,"'-Z"'.IATC4~3 JAlSr"U ("432.
OffM '-"7J au IZM}t;.iIQ./T SPE AT' C~ 422..-
P'.. ANE ON ,.,,,,,13 (E~57)
';t~~~~r::;."1 c.6B eE.TW£EN(£~O, E3b1) '-NO(E3"?> I E:.?>~.
IN5T"_ .. fU5E CUF" TH [HO "T"""~ TO OUTSiDE
T3:l
- ~I i
110- i i '
it I ~C;i
o
RCWI:i WO JlIlD U/4 M!I~T 6E USfD 'N PAllO
AS FOLLOWS:
IS) TM54703 "lID TMSA704 (PH !l7Z459'OOOJ
AIID -0004)
(£~ t £.5(5)
[ [ oF ~E':; -'~'WIIDf OF FWB
c
,p.Il·';:
CAl TM54701 Jl1fLI TMS410Z (PH 97ZA5~~Hnll
~ ~J"~~lJ;'P~1~·~W.o;~~~RZ3~1&~~~~I~t~~~~,
P'NSf}TEM ~~fl
,l.1':'·-{'
~ ~~~r~t'~~u:,o: .~~~Etf':;'~~.
[§ ~';2_~~~~, ~~C~ ~~~;3T;(·,",I.~I",3<.o5,~!a2,5"
240U'N
3
ONL
s. Ei!Z!2 ":"-"TES :.JMPONENT~ NOT u-,EO.
CO...... , ~"'D LE";'TH FROM CONDUC.TOR S.DE or 80ARD I!> .075
t::' ~ "':"ili~~~~-;f~~~H ON P'w'eo OrrM 1);l5tWltE -;-",..,.e, WITt'
g: ~.:~:.."tt~p~7x.' ~£M
I
4
~FOR -0001 ~>SE~'I!LY GIlLY:
TO PREVENT
~ ~~~ WITH
-
!5
"OTES: COIllT
~IlEMOVE PIN 7 FROM HETW(JI(K U40HFOR -0001
ASSEMBLY
J)
"ROM E'llTt",NG HOLE~
l!l ~'Q A~~
o
\
7
\
NOTIS L'''-ESS OTHERW'SE SF-Cf'ED
M'\K;
OE.XRIPTION
NUMOEI<.
c.ocE*='"
~ ~5f~..th~~T:,:.~~~~~E~H~t~S f.)~ilTt)'~~,~~6' ~41 p~~g~i5C
coo.TIN::' Of' TEST PAD:;' ON THE. .5OL..OE.R SIDE" OF """'8 [£3OcO., f:~),
~ 111.,,"''''-1. R504- (:TE~ '57) AT LOCATION CR42.4 (FDI<. - = 1 A5SV) CR
1..a:.A1.G.'1 CR+D4>(FCI<.-oc.-o::,/ '0005 A"YJ
§l ~~_"!ilH
AT END OPPOSITE t EA= OR
,'!l::; 1:;':;.
-
&-tl>.
CAA6.CrTDR~
(510£ V/£\,J H-H, !:>liB. ZLlNE ..... -a) oR
ITEM 2.-+6.
Lt,~~..
'lA/V::'
A 8 C. 0 E F Co H,J t<. L M N P,RI5 T IJ V N Y HA< C ADAE AF''-';,l-A.JrAi\jIli]
sc.W£MATIC.(9B~e"2.) Is'e. 0 ElF" ("H'J'JIJIJI", LIM N'pIR R T U 'J J'I Y y y,.I;;}ICABiAC
P'w'&
(a!!?>6~ DTE.lflF F" F H H HIHIHIH!HIHiHIKIKIK " K K " ~ KKK K K '(. L L L
~EMeLY
8 =t:c~ ~[.Y~e.t;!~~EI-~,~ ~Mue1i~~:~gNo~'Lfc~ir'
Ai..'TE~NATI&
REVISION
DOC.UMENT
~ ~~ci'~t ~E~~~ ~T£~~r) rr~~T~~ci%'d5~£~T N~~TH
U:5E
R £ V 5 TAT U S
OF
...
l".E_v..
L1I.~l,:,~fi';JJN~
S .. , E ~ S '-~:-;-Tl'12~'
IQTvI
REIII':'ISNS
sn;r7801
T~~· ~~
e
T
7
I
6
I
5
4
I
-~'1:. ~~
~.::;< ~w
3
,~'"
J
-
17
98364-1
01962141'
<,(AH
I
2
ELECTRONICS
III
OF)f
L
\
Uvi
8
7
6
4
3
2
D
c
c
B
B
o
A
8
5
6
7
4
3
2
04- +PL
o
o
I~
=
c
c
11I1@
B
B
~ "'-RITY OPTION
[TIJ
It.
j
ztl
(iJli~iJ/r)
t'l:
2. PL
fu~. Ula)
b@l
(UIO UI4.UI5.UI7. UI")
( ('()(IZ ( -!i()()2)
5 PL
( (lon", ,
G.i
ru/O. lJl04-)
,;o.(,~.-(l(1n0
.. (-R(JOb
d(V'v~1
HUO,,)
It.
•
7
5 .
3
2
~
~--~----~----~----~--~~--~----~----~----~----~----~--~--~------~--------I
o
:VI£"" R (SH 15)
c
c
B
B
A
A
-0003. -
800~.
-coe s • - MOS SHaWN
-------------
0
6
7
8
l
5
4
3
2
(~5)
I
__ 2.I!>O
;
o
I"II'X
~
(WJt)£II
JAlf'EE J ____
I·II
III;
~=
Iii!
.~:~;
!!
Ii
c
Ii
-
(MCl.--V:
--
..... .....
c
_JYIF[RJ
~C
~e
I'
II
1~~3'"'
»
en0
~
-~
I
~'
B
_5004-
B
)!I):!:
~ ~ITY OPTION
IU/:!
~
~
(!;f~
E
o
J
IlEV LETT['"
:ill
A
(J.tu'7)
A
I
EV
f
8
7
6
-A-4J .. 1P\.1
Ie
3,
2
3
}M
o
III
F'-T
~
5PL-
A-
NUT
N
. (KIT OF TWO)
I lA/STAllED .:JFPOSIT£ END
VIEW
A-A
~~
SCALE:t.lO'l£
~~4,g~~~w
SECTION B-B
SCALE~ NOliE
!)H 2.,!,,'4:.4A
ell4-
.110''''
10"
~==~~~==~~~~==~~~~~==~~V
VI£wR
I~S TIILl
"'NIOX
c
:n
(SEt
'"34-40
. . \ PH} 2 PLACES
E>H ~.~.+, "'..
~_A_T_E_O_QO ._C_C_~
__
.C_C_W
_________________
__
SCALE: tJON;'
~H 2.\.3'+.I4A
(ALTERNATE.)
______________
M-M
SCALE: NONE
~RO:~:~~~:~:~~9~·~:AC:~W________lr--------~----------------------------~______~______~~==[j~~w::::r~:!;::j
s
,J
SHUT
J
6
7
8
5
2
3
o\BI..E.
FROM
NO COLOR
1-1
T
I IAR ..
,
£0
ORN
L
-s
-4
N
L
I!I
7
n
1&
-,.-
WM[N
~_
,TEM
VI
RY
"'liT
..."
wwT/BRW
'WMT/R£O
WMTI RN
WU'
L
TO
n40
,,
344-
D
HO'
£"
. ..
-
-tl
-.,
-.~
-I
--:;~~! '37
£~
~~~-i-
Z"~
2.T/£-W""'J"'~
li~ovll'I£D AROtIAlf)
C 3';)6/C306K"31/: _<32
c
c
•
TIIBLE II.
W/Rf
liD
z
3
4
,
7
f-i
,
A
FROM
III"I.'I'TO -ODt'A-/IOO, O'IU'
TO
o
ffiOTIfItII6II IIOI.l L«.OED "eLl RDJllCEIoIT TO
/lUl/oST TO U20-/6
UZ]- 2 (£-as)
~ .DJIlCEIIT TO UZ7-S IE a: doD AT ~413 -\..EFT
;~D AT /140/-'
HIlLE AT R4/t; -L£FT
dOLE AT U40Z-/
;//0 FIT ,.45'-LcFT
Hal liT U4<13-4
PliO liT U40/ ]
PIID liT /(43,- LEFT
far Af)JIlCEIf7 Ta UHf IE -s"
i1Dfll"JMllfT TOUI-/3,E-81J HUE lIT R..,,-R/GHT ~
Hilt, AT RA/, -R/'IIT
..oLE liT .l40Z-£NIITTOl
BIIel< VIEW
P
VIEW
5C1lLf:/I{1I{
-0001 AND
5H
-I£t)/
OIfL1
7
A
983841
e
7
6
5
3
2
o
o
VI/wi
c
c
B
B
A
It.
»
a,
w
983841
LIST OF MATERIALS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
Ol'n?
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIA/TTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W/MODEM
Quantity
'lI}I)Ol.OOc)
TI Part No.
F'A
1'\?'n?2-1~
09
F'4
0772222-11')1
OOfl~A
0·)n4
1'101)01.1)00
"'A
0772222-1114
'10002.nnn
"'A
Q?2nn-7115
)Onl),.oon
"A
0227222-1404
,
,U025
Un05
"JFTwnpfC
0<1007.00n
"A
022??22-1406
1'101'101.1'11'11'1
rll
0222722-74 0 7
Ot}OOl.(lO'l
CA
1'17772<'7-7493
'll)nOZ.'lOfl
cA
1'1277274-2741
nl'\(l02.1)00
CA
07222?'5- 2311.
,
,
NFTwnPK
')0"1'11.\100
lOA
'l22??2'i-2311
.
,lI412
U201
')')01)1 • ..,00
1"4
O(H27M-OOOI
MFTWnpK,S~74lS11,pnS1T1VF
"OOB
PIN 240000-7411
orH2r
4lTN PAPT c(1R
')01"0' .111)0
ca
02447' 'i-7404
I'Ifl1'1A
0()orl2.I)On
<:4
nC;37
"IFTWORI< l~'Il'!."I,SN123"P
lIZOI
I'\ n l1"
1)012
5~1140MI
lHO'! ,U307
Mill A
- or)ll
,
NI'TW(1RI(-<:"J14 0 :!"1
1'029
nn l')~
1)1'11
,U02l
NFTwnPK-SN7492N
11028
onO()e
')1'\''1
.
U024 .UOl1 ,
l),lORA
n'l(lO
<;~'14115~
NFTWOPI( SN1404N
1'1')/)61\
,007A
,
S~14114N
~'FTW('lRK
00n1
1'\00'1
5"114151"1
~'FT~nPfC
'JQ09
Remarks
$"11410<)"
NFTWOPt<
1I1'126
I)OO,)A
(ll.l'lf,
AH
AH
AH
AH
,
U020 ,U023
nl)04A
1'101'10:;
",rTlJnpt<
U003
n1}002.nOf)
Rev.
0983841'()001
0983841·0002
0983841·0003
0983841·0004
Description
on024
Nln"
Part No.
tC."r> T 1{MlV (nUPlJ;[I
11301
nI)OO2.clOO
"'4
o<;noOO-OOOl
.
ISnlAT~P
p" ,"PTT r:AlL Y Cf1U P lFn 15nlATnp
tl402 "?l0\
A-64
)
)
for -0001, ·0003, & ·0004
for ·0002
LIST OF MATERIALS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
'11)1
Part No.
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIA/TTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W!MODEM
QuantIty
"7
IMl
7~
",Ill
Q
TI Part No.
'l.,nOl.000
>'A
097?450-0fI02
I')I')I)()' .'"1"1'1
F=/\
1)11\
U404 1'41)5 "4n6 lJ401 lJ41)S
O,)? 1 II
U400 "411l 11411 1I41' U414
OP
AMP
)
}
for-0001 & -0003
for -0004 only
-~
002:>
1'I()/'H11.r'lrIO
o <;11r.A 0-0002
CA
"
Ol)?'~
~'F=TWnIlK
1)1l??1>,
p ,,,.
"",r
Y<;
1'1"'':\
""'" .1'10"
CA
I'ICJ'16M3-0')Ol
c ...
0,?1?onO-7 1 :tA
1')'1",}I.I)"f)
01l?4t
o,p",
C'A
I)CJ7'GOO-1432
I'FlO,11.0()O
"/I
0972<;:10-7451
I)llllO'.O('l1'l
"t.
1)011"1110-0001
0,)"01. "IlO
Fa
OQ7;:>fo?5-0001
YTc,.
?2
for -0001 & -0002 only
NA"l!1 nR I VFP
K
<;"'74lS1~~"
,
"1' T,,(11= I<'
S~'74L
<; 32~'
,
"'CTwnRK
<;I\J74LS"ilfll
If
,S~'QFl614~'
DPTIIFR T .... "P~AL
PIIIIIITH!'An
.Ulll?
MFTWOIIK OCT449 I"'PTI ("ALt Y rnUPLFf'
U401
,n,lil1 .1)('"
Ct,
0717P 7-00C'f;
TPANSI<;lnr.,TT~;<;'
01)0"'1.{\0(\
FA
OQQfo 312-0001
TPANS'STnp.SKA34?7
'lIP'l"
01')10
~'FT",(11l
lII0l
n(\?Ilt
o"t'l
F=np
for -0001, -0002, & ,0004 only
0006
0"77A
MI7/1
AL TN
NFTW nI1 K,SN7<;'50P,rUAL
uon1
n02l-A
0'" 7
T~<;5<;Ol.
C774~0-onm
,V,j
'1011
:'M'''1.0Illl
,11'1?<; A
1l"26
)
)
(/0 A"If1 TY"FP
tJ013
"'InA
IlO?4
T"~'i'i04,
\):)1S
)
fo.-0002
n4"2
I)I)V1A
Q405
OO~IlP
Y~P'
N-CHAN~IFL
30 IS TIS15.5EI FrTFf'
A-65
FFT
}
for -0001, & -0004 only
LIST OF MATERI~LS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
Part No.
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIA/TTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W/MODEM
Quantity
0983841·0001
0983841·0002
0983841·0003
0983841·0004
TI Part No.
Description
PIN 71?"6-/}1}"1
nooo~.nnn
n972nt~-0004
Rev.
AH
AH
AH
AH
Remarks
Ie; 4'"
TOANSJC;T~P.Fl1~-FFT
P (HAN SILIcnN Jr T
)
fo,·0003
0400:;
1).)001.0(,'"
OIn?
01)31A
08nO~2~-OOOl
TPANSISTn~
A5 T2901 PNP SILICON
')QO??OOO
nOol. (01)2. Ot)n3, 0101. o?Or;
0356 .0404 •
o?nl .0704 .n?1)8 ,
001;?465-000?
00001.rton
THYRISTr1P<;.TPTnI:'F P_M-P-t.I SllIe(,M Tlfl06
0310 •
0301
097?51?-OOO?
"1"1003.001"1
,
TPANSTSTnp,T!pl~l
SrLlrO~
~-P-N
nAoLNGTN
0104 ,02''i! .O?52 ,
0307
0202 ,0203 ,0215 ,
1'1'\1'1')1 •
non
1)209
I"In4]
0311
I)QI').11.onn
"fJ
I)tll)o?"no
FA
""52A
OO';?
,
fP303.
)
0,)53A
('03
fo, ·0001 only
1 Q ':P328
I)I)00t.OOr)
fo,·0001
A-66
LIST OF MATERIALS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
Part No.
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIA/TTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W/MODEM
Quantity
0983841·0001
0983841·0002
0983841·0003
0983841·0004
TI Part No.
AH
AH
AH
AH
DeSCription
Remarks
rR4?6
('11'1.7
)
for ·0001, ·0003, & ·0004
(402
041n~?Q-1)103
1)0000;.000
(AP FlX
(FPA~T(
.010
MF GMV
I KV
Ol)nil4.1'0"
041005B-ono~
000'17.001'
(AP.F!X (fPAMTr .05 MF 20V •
~0/-70~
(1104.(005,(006 ,(OOA .(Oll,
(012 ,r I)'
~
,r01 4,(O! 0; .COI7.
rOI8.rOl Q ,r020,(021,rl03.
for ·0001, & ·0004 only
lOf,7F
on(' 7
()O(}21.001)
FA
r004,C005,(006,(OOA.rOl1.
0067A
rOl"COl~,rn14.rOI5.rOI7.
for ·0002
rl~n,(107,(lOA,(110,(111,
OO/,7F
(2l1 ,r 35l
041Q05A-0003
CAP.FIX rFPAMyr .05 MF 20V • 80/-20%
C 004 ,( 005 ,r OOb, C 008.Co) 1
r018,COIQ,C020,(071,rl03
OI)f,70
for ·0003
(211,(351 C406,(407,r408
01)67(;
C 429 , r 41 0, C 4:3 ? ,C 4 3 ~
IlOI}'1l.0I)n
"..
CAP 3.3 MF,50V 20%
C~P~~IC
(410
PIN 977225-0533 IS AN
0972476-0001 ·CAP,.OIUF,ll
A-67
5n~V~C
MINIMUM
)
for·OOOl & ·0003
LIST OF MATERIALS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
Part No-.
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIAITTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W/MODEM
Quantity
0983841·0001
0983841·0002
0983841·0003
0983841·0004
TI Part No.
Rev.
AH
AH
AH
AH
Descrtptlon
Remarks
r4J8,~42t.f422'S4?3,r424,
(427,(478
0070
0,.,007.000
'-/1
nt174
00001.000
F'!\
0"77
I)I,){lol.000
f"~
;H)OOl.0(,1'
F'A
C~06
0°72'124-0011
FA
1)<)72979-037'1
Mt:~
10 t
15
VOLT OPL
rAP FIX MTCA 500V 1500 PF 'i ,;
.
r:-n
/'\!)I)(ll.OC)O
68
,
f~13
O'17Z'1711-001)5
5~LIr
"27 ,
r
c1071~
,C308 ,
fAP "IX TANT
CAP FIX fCOA'ITf 100
PF 11) 7:
zoO V
P'F 10
?OO V
f007
"''''''07.r'lon
r:~
(\97Z"Z<)-0376
I)I)f)O~.OOO
fA
1)97202 0 -0385
CAP FIX
C'FPA~Ir
(01)9 .(01 0
O'''\?
"8.0
~
,
fAP FIX C F'PAIAIC
n,.,
lOt 200V
PF'
ClI'1 (lO5 t:3'i?
OOR2A
(1)1)0?000
"A
(\9729;:>9-I)'H)7
CAP FIX (FPAIAIC .00' 'IF' , 0" 200V
0972<)2<)-1)411
rAP FIX fFPAMI( .OO'i6 lJt: lOt 100"
Cli'i , C1l7
ooOOZ. Mil
"A
(419 ,r4Zi)
OOOn!.(I(lfl
FA
",o1ZQ~1-01)16
,.,nOo,.nnll
~a
{)972Q~1-I)03Q
'If)f)o?.ono
c~
~OZ
0<)72<)65-0004
.003
CAPAC [T"P
r331
"A
,
rAPAfIT[,P 11 onlJt:-Io/+7'it Ito II
C~t)l
; nooo",.oOf)
for -0001, ·0003, &-0004
CAPArITrp 4400UF-lO/+7'i7: 7.r;v
r
097 ?9'.1 \-00 8",
.
.
.(332
fAP FTX
,
11I)our-l0/+75~
40V
,
frpj\~Ir
~21'1('1
PF' 107:
~O'V
for ·0001, ·0003, & ·0004
(00"1 ,(41)4 ,f 40<")
OOflRA
f)1)f)OI. (l(lll
~II
0972q65-0~04
(AP FIX
r~PAMIC
,
2200 PF
10~
200V
for ·0002
- Of)IIAII
fOl'3
001"102.1'(:0
FPo
lor -(l001, -0002, & ·0003
("317.r 3'>1,
1'\I"\O\~I.
000
FA
091?965-000R
CAP Fix fEPAMI( .0047
~F
10~
200 V
fll' ·0004 onl,!
r·'l1.
n00fl'i.""n
7
rA
A-68
LIST OF MATERIALS
Assembly
TERMINAL ELECTRONICS, 745 W/ACOUSTIC COUPLER
TERMINAL EL ECTRONICS, 743 EIAITTY
TERMINAL ELECTRONICS, 743/745, CCITT MODEM
TERMINAL ELECTRONICS, 743n45, W/MODEM
Item
No.
Quantity
I)Oq'
'I 'I flO<
.r)r)'l
TI Part No.
ca
0<; 7?CJf,<;-(1)' 6
OOQl:'
IlrlC;2
.on
~F
10'; 100V
rAP F' X rFRAMrr .100
~F
11''1: lllllV
("AP FIl( r I'D ""IC
"'11"; C3?1
'1r)OII.001'
FA
OCJ72'H,<;-OO24
OI)Q?n
r31f>,("3lq,("'133,C40~,r40'5
OOQ;>r
C43'
(\OQOfi."}OO
fA
r)9 7 ;>G6S-01)24
:1"
CAP FtX rFP,," IC .100 MF lOt IOOV
r3C5,r311.r312,C3'4,C~!6,
Ollo;>f'
("3l0,r·B9,r33"'
,)"IIlOQ. r)OO
OOG 2
FA
1197?Q65-01)24
rAP FIX ("FDAMIC .' 00
~
~.n=
!'lfl 0 2A
('10S,r310,r311,("317,(114
()I)Q;>P
C31f>.r319.C3",3,C40'i
'lOOl (I. ~or
!'lllO?
r:.A
097296<;-l)fl24
(liD
.100
q x ("rI:AMI(
O,lG"A
('10<; r-Hn r ':q 1 r
01lQ7<\
[316
nflQ<;
AH
AH
AH
AH
Remarks
("",0'5,C'Ilr),("311,C 312,[ 314,
00 0
Rev.
0983841·0001
0983841·0002
0983841·0003
0983841·0004
Description
0'1 0 ;> A
OOG?
Part No.
'InnOl.Onll
FA
()9'1~q'l7-0003
r~l<)
~
17
102; '"IlV
~F
~
0'1' 'OOV
314
0'13 (40'1 r405
P/OJ 0'H?94(',-XXXX p!"Sl<;Tf")P
OIlC!<;Q
SFl,CTtf1 AT
:).,),)<;r
nH"S T"
tJ~II
T rr:.<;T.
)
)
)
for -0002
for -0003
for -0004 onlv
P\oIfI ,""[IF" CKT
PfsrST~p,~FLFCTFn,743/74S
Onq<;A
)
for -0001
;>01(
for-0001
on9<;"1
r:.A
Il Q7 7630-0018
Clllo,".nnl'1
Cd
nC;~842'5-01)45
fJF5
001101.0MI
rA
'153842S-i)087
PES
ry""7·
OlIO?
'l'lQH
1131"
~
'l'lr)"? 0(\.'1
0(,<;0
J'A
05?1l4?5-'l11S
,)')004
"1'1)"-
5~
?WATT FIIt' (n"p
1000. "HU
5~
2WATT FIX Cn"P
"')')01.00"
CA
1)'5,\R42~-012'1
r1<)OOI.000
fA
OQ83Q~
R ~~ 7
,
oJ'S
1<;nOrl. OH'J! 5"
tl'
nH~S
fl141"
ca
0<)72141-0067
~" .. p
.
PI ~!
On,,)01.000
J'!)(
QfSISTrp,~flFCTff1,742/745
PfSI<:TI"I: 7f1
0141
2W~TT
,
('II01A
C
for -0001. ·0002, & ·0003
33"00. OHIO 51: 2WATT FIX cnMJ'
PFS
Q341l
7- OO!)l
)
,
fll'llP
(H
lW lor wr P fPfmJ'J1l I>nWfQ
n~I'"
, 8. "HU
1:332 ,0330
010011
0101
QFS "IX .J"/)
o·nA
o"ql,!\
.1'197
nwo"s.
"46fl np 046<;
O,,,OI.anO
l).lQ6
~OOt(
<;30~70-XXl(X
PWR,PV"lLTS
Sfl Fr Teo
rH~S
Tn 1.41<
"1?2
NETWOPt( • II f'S IS Tnp 6.8K rH"S
U016
A-59
2!: 14 PI"
)
for -0001, -0002, & -0003
LIST OF MATERIALS
Assembly
TERMINAL
TERMINAL
TERMINAL
TERMINAL
Item
No.
0141
ELECTRONICS, 745 W/ACOUSTIC COUPLER
ELECTRONICS, 743 EIAITTY
ELECTRONICS, 743/745, CCITT MODEM
ELECTRONICS, 743/745, W/MODEM
Quantity
Oil""? .'l01')
TI Part No.
"'~
1 0 7;>141-'l062
1)0nOl .nol')
I=~
0072221'-000£1
()OOOl.OO"l
"'A
0072?211-0010
000('1.000
~A
0(P722 £1-0013
01"44/\
'H
4<;
.00('1
F!
"Q7?f! o-I')f}04
III=S 'STn~ Vllo 'i00 rHv
OOI}C'l.onn
FA
')')o'.onn
c:~
()972947-0051
oF~
).)(1111.01'0
FA
0977<';41-0060
F'X 471)
flHM 5'1: .5 W (AD 1m"! FTL'"
1I?2Q .1-301 ,11303
,
DFS FIX .. 70
5~
p
3 ...11
"H"1
• 5 W (AIlRn .. FtL !4
030'\
OF$ cll( 620
Of-lM
~'I:
.'5 W CAD RC~' FILM
11493
OOOlll.non
C/l
Oq77o7A-O/}~9
01=<; FD' r ... ··p 47 OH!4S 1.flW
11302
n"'OA
Il~ll
V~Q
IIF~IST~r.F!Xc:r.WIPFWnUNn
I"'\:n
O>.'1~
0.,,0
III=SISTrJP
for-0001 & -0003 only
11251 .112511
0"('of>~
-
)
)
Q 23-3
n'''lb6
Illflf>
r .<;W lOf VAQIAflLf
0412
O'O"iA
n"nf,
.')W
114"
0' p"",
0"0<;
5~
PI21
01"06
"!~f,
,
1I?"4
IlOC'~'
0149A
nl<;1l
for -0001, -0003, & -0004
,
1)1)01
allln
HlP Cl83841-1
for·oool
')0)1\"1. ('no
Fb
1'1 0 1'''841-'5002
AliT" ''''SFQTFf'I TADF Ff"'q flO!
'!;
POQO MQS
I
7
8
6
~0fT
.z.-----'-"'..............
-t--~"--...
2
3
~--------.,
I
1183841 ReI! A AIIO
EAI'L,!I~
I
r -UNftEGULAlED
~QW~!i "'§!:!pPLY
I
- -1-- - - - - - - - - - - ~
START
~
I
5 -t-:,,--'"-"6-:c.....-
DC
II
o
. +I~V
+
C3Z"
.1
500 V
I
[341
IWOG
40T
[J40B~
I
I
T301
REGUlATED
OUTPUT
VOLTAr.E5
CR3ZZ
OliN SS389Zlu£SI3CZ
o
I
I
C~
200
lOOV
~
I
REG SENSE
c
n(!C31~
R325
9.0~K
10/0
>
R31Z
~.8
R3OE.
101(
R323
11\
1'1301
b.8K
'
I
-
LM
U1
ez
1.1
,'0%
i U:oZ
~
"313
I
7
R~2.B
47DK
~':l
ZIOO
C
[lifo
IIoV
JC304~
22
:5~
n~1\
I
3
14.'7t(
1"1.
cw
•, 2
2
-sv
El!."' ~sv
-£~.
.::!1!....o__ ~-IZy~'.Itll0
MC7905CP
·i~'.1
OR Lfd3Z0T-.5 0
~
1'l!35
3
lID
301
E12!
tln t
\
nzo
B
R3M.
100(
R35i
R3!12
LOI(
1.15K
.,..
.1"40
+5V~~~--~~~~
1
CIS I
.05
R353'\,..]~-~V
R~57
3.0"1(
....
loOK
.. ~
~358
A
1~ r>-----~---4----_+-_4_--...l--T ~~pf
_
&20
.iU52
------------~~~--------~
e
7
6
!5
4
3
2
1114 l'io ." 11
~~
AOAI I.Z A3
SEN
~!..JSH~)
TIIO
~1DAT"}~
SEU'50R
INT
WR-
OI5lN
Rt
"a
I
1"1
OUTO
1
OUT I
74.~U4
2
TMS6080
CPU
I
P ,,"
+$V
_510
• .=,
...!!: ~CC
E~
DSru~[
"14LS5Z
en
,
U15
15
~ 100
~
-SV -'-'- VBS
~GNO
-=
Ne
-~
INTE
Nt~ HLDI>
OUT 3
I
z
1
OUT 2
I
ETo!!
",I
.ll,l, ..
OUT.
+5Y
2
GHC
....!.. vos
-5V
"
-
OUTS
vee
,
OUT.
OUT T
~VOAT
.:':3-
C
~~iZlRO~iZlRI~"'RZ~-;iJR3-
05-~"'R'~"'R5-
~"'Rw~"RT-
-1
~
vee
:: AD AI AlA\ M MAAoAil
~
IN
4
IN !i
+5~~ vee
IF
&HI)
U.8
,4S411/1454:
Z5~. 6
PROM
UIZ
IN
w
IN
7
B
'"
~
~EEKOTE ")
o
A
TE~r
AC.CESS
f
3
4
2
r-------------------------------------------,
I
J40}I
Q.. !!1
I
er, ~rzy
(SH 5)
°1
ONL fiE'
• 12V
~
-,zv
~ls--15--14-.__,
"4
II
I
I
:
I
+::I~TA
(
17
-
I
"
:6
~I(!JIB-~
~1
~
P.U
Lii:A:JLlFT
R~~4 -=
(SITS)
21(
'R':;LlO:
r'RB'J5'f
o
I
) 15 OTR
)
I
I
13
XNlTD
_+_---_4 12
RCVO
I
L..-75150 -VZ--..JS
RCVOITT
(U/8-~)
I
>'0
~,SIGIV"L
JJ2~-ID·n) 14
•
,~-"
D
VV\
3.311:
/I
12
6!
r-:---c>=--....=;.-<><"
31
151B9A I
J
J
I
t--lf------~_
I
13
U7
LJI
-
i,
h-"----'--I-+----4·1
~-L:-N~
COET
---------,
I
JUMPE:RS INSTAL lE:O 1
ON PORTABLE
•
UNIT ONL y
(SEE SI-!T N'!)
I
I
I
I It 9 ",9 .1/ 9
I ¥ I i I ~ I
I
IL TERMINAL
ItHERFACE
L~_~_~ _________ ....J
I
__________________________________________
J
c
c
~
+5V
l
CLlC¢2
PWRCLK
~~~g
E:S8
~~-...:.:.:.:.::::;;~---<~-
f"tvRCLY.
TO CZC3
(SI4£~T i.)
B
£16
PROM(LI7-l,SHT A)
£20
+5
CTLTSTRBE-
d;9
105
II 1&
...lOV
(UZ&-9,SHT ~)
CTL2STRBE-
R7
s..,
ilis
(UIS-/S,SIIT':")
~5v
105 15 los
1s
105
Ie I" II4 r JI9
l8
1.05
Jc4
1
+-llY
05
TCI7=}
, --r---
~5
]'zo
B
+sv
J..,::>5
'r
21
~
~-I2V
.05
Tcs
~
744~5:
( '-'101 - 9, SHT
A
E7S
£60
t
A
•
•
7
2
CTl.ISTllaI-
l-.,SHT+)
ODO
~--------~~~---- P~
001
~----------~~---- PHS
OOZ
D
17-----------~---- PHA
i~--------,---------STEP
t-=-----f~--- FAST
Ij-!--------t--i--
006
I
0R7-
I
740f>
Z
(,2"7
ClD7
007
r -____________-=O~DO=_____=i1Z 30
r-_________--'~""~:..:..~----....:~'=-i3 40
>--+-+-+--OOHZ'
7m2
8f~L~L-~
E6Z
________+-____~
I
II
II
P~R'T
A
A
EvEr.
cc.c.
.~t..~j(
SPAC.E
+51
K~D
&. MEOI.Al dSM INTERFACE
6
7
8
R'SnECT
V~EF
2
2~1
EIIIC-C~---""""'~:r
RIZl
RIZI
-1 .0'
CZO,
TO L4IUl
R~n.
0 EIU
lC20Z
.Ot
+12 V
D
D
RIl'I!
t..1'!Ift
.1Of.
PVFET5 CI2S~
1
TIS·S
o VOLlS ,T1CJI:" RI1~ ,cf"\,....,~,....'._-z___-'\NY_ _+---=~
E1I4<:>-
~.
750K :;
100
1'1'.
RIll
I
D~V'OI.6~
£10"
_
ZIS.n
c
R StcPE
f~~3
I
R1I9
,,,ft:.
-470
RI07
I
£118
M--.
~
*"
----+-------+-----'-==K
5)
e214
MOTDA
t----4.........-+--_---<> E20,,"
2~~I
-12 V
D-1SHOC JIO'-I t----.
£'O/~
.,,;-
C'O)
PHC
PGND
3~~:~--t---+----------'
GNDS JIO/-3
III.
J'Ol-,~N.C;~T
}--n
-=
I.SK
IN9.4!!
TEMPERATURE
COMPENSATION
c.
,-".~-jf----o EIIZ PVSWS
F~T-----~~~~--~-~
uzr.-z
='"UO; eRIOl
IN914B
CRIO'
4.7 K
@HT~
RI04
I
£207 C>o-Iw\<">O"T"Sw=---'<
+5V
£ZOI
_ - - - - - - -....-'),reol·I
MOT-R
PG
RI05
21'1.
FROM POWER
SUPPLY SECTION
(TO C3~3 (4)
RZIS
~HT 2)
IK
B
+lOV
>---t==---=:'::"_~J IOH7
£120
>-.L:=--...;.:c:-_~~'1()1_5
£105
-t5 V
A
A
1125-'5
LIIIIFD -~"""''''''''_-H
C·WT~
PRINTHEAD
DRIVERS
T
•
7
2
fi.iMITER---~Ir:'l
I
,
I
I
I
I
I
I
CR
R4e
o
I
I
I
I
I
I
I
7
I
I
L ___
-=____ -'
,
+IZV--_-..,..,,~
r -------------------,
IC4Z41~
l
:" I__---4t_~~~
McSm
11E~~ .I~'o
I
I
I
I
:
':"
I
---- - ----- ----,I
~!
~
R"5Z
~2V-----~~~~~----
~--+-+---......JoLI/I~I\/(----.........7 ~:g::~
r
~~r'~-~~ __~~C~R~"~S4_~/~C~~~~~,,-.-I--.~~
10K
$I
t
R"16
'\I
i ~
~"7A.
1,;r~A-;
,
I
I
_-; -
+&0,.
INSTALLED ON
:
'
I'ORTAIJtEIJNITONLYQ£40Z1
-20"
II
II
10$
~~g.0A~
.. 'ZV
~
FER';-;; .
(SliT
~
"
:
I
Ii!I+S
I 1401. f{J$.
:!
'! .'1'
d
I"
7
-II I
I
:,
I
I
U,
I
I
II
:
~ _~"4 .: ~. .:_:.:.
I
I
:
c
II I
II
II
0.0056
L ___ -- - ------ --h-.l:
____ - I
.05 (., PlACE~)
F:~S;
SEESHT~.
I
L __________
.-l
r-
Ii
1
~
t
5IC3K5IC!K
1
__
-_~
L_
1.511.
I I
':" - 20%
r-- - - - ----R;;;;;- -- ---I
foIlV
I
I
1
I
I
5
R""
I
I
I
I
I E41l I
ITRHGWVI
I
I
I
L-__J~~-4------------__--~1I
FSK TRANSt.lITTER JI
________________________
..
S1_IK ,,.
10.8111 1%
R410
C401
.01
I
'3_'1( 1%
lJ4;S
1
1
I
_ _ _ _ _ _ _ _ -,
;£-:;;., :~Z~~~1~~/~P£ :
I
I £401 JPORTABLE UNIT ONLY I
I
S£ESHT ~
I
C.~O, 1;,3 ':"
-'ZV
I
-_J_L_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_...J--J
R430
CIIRDET
'>!.-+-_-.:.RV'40\II7~+--~_ _ _~ J403-2
__
- - ___
__
-___
I
I
A
-
TO 1lECF:IVF:
:
IL ________
CURRf,NT LOOP
____ 1
lOll.
B
4Z!
~D ----~~~~~~r+~
:
I
I
~
~
:
,
L ___________ ...JI
B
6
7
4
3
2
fL iMiT£R- - - - - - -,
I
I
(R409
I
I
o
(R
R412
I
R4H
I
I
1.4K
75K
11.
I
I
I
I
I
I
I
I"/.
r::---------,
I THI5 ':.flEET npPLlES TO
nssJ"
I..:~£..
93384'-00[,3,
I
I
______ -l
o
I
I
I
L. _ _ _
C
:= _____ JI
c
INO
31.t.1<
a;~
3K
»
do
I\)
~
liZ!
.01
RI60
8.37K .11R·HI
B
J/.,K
B.
().I't
o
'40'r
.(N
A
R410
~3.11(
l:.c
A
7
6
!5
4
2
3
'T7";,j -HiE-'- /1/. ,pi7F;; {O...,
I !J':'.Y
"f':-;"11-:;,,,4
L
__________
I
.....J
o
o
r----- ---------,
I
"'0 ll€CF"JVE"
• :Ufi'PO!.!,,_OCP
R.'j.
--'\1\
-
~
-
-
~
- - - - - - RCVDATA
~ _ ...!~A ___ --1-'-~-;03-"
l't"(~dll. :'.JMP[ R
!h:;fA iff-
. ~ E 405
r
-~:
~~~~~/-}T' ~/~ ~N'-Y
I
r40Z :
~
(425
-12Y
---+-
~
.05 (9 PlACi":)
+ 80 'Yo
-ZC'l'o
c
____________ -.l
»
Co
eN
B
B
t
7
8
!5
'3
4
2
D
D
r--------------------------------------------...,
743/745 INTERFACE
U4:l1
7!)·!);)P
r----------,
1IC7t~
+5\o':rl----7 V i·~
J'~~-78-~---<>----------~
II
:I
II!
I
I
L
:
___
-:-
*,...--------7
~~SOR
LOCOIC
-/2
i
c
.1403- I.
HDC.FTENI-----"~....---~)
1
1
-I
II.CVDATA
1
---T& ---B---YS.J
+12
I
COUPLER / MODE,'W
RECEIVE OUTPUT
___ ~"!.7L
::-..,.'..0...7 ------.-7 J403- 8
I
""~---:C!:t-,-L---'
R436
10K
TO ACOUSTIC
I
'III
R4/6
II(
REFERENCE
r---------...,
~2~C~~~~~~~~-~.:~-"'=I~S_;,:~L~~~:;;:S~y-~~_;----=R---Ji-~gu;z~iiiD-l
TO
PROCeSSOR
EIA DATA
TERMI"'"A£. RCADY - ...---------)~ 15
EIA TRANSMIT
{
DATA
_-----..-----;~/3
{
LO(i,IC
~
00
~
~
I
r-----------,
10'
I
r---
I
:
I
I
,70 ACOtr.:>TlC
I
I
, COUPLER/MODEM'
: XMIT INPUT
:
I
• (51fT4+7 I UI
f -_ _ _L_-_-_-_-. .
11.419
J103-3 (
f() 6 751894" II(
'XMITDA"TA
l-_-_-_-_-_-_..J=
-I
TRANSMIT
CURR!Nrc
lOOP
I
:
I
'--~--1 (XI...')
I ;~~7
,I
-t,rL __
N~
I
12
ReVD
/I
COET
CR403
INQOO3
I
TlS99
G40Z
oJ
"
Q4C3
:
ACOUSTIC COUPLeR/
MOD£M CIRCUITRY
I
I
-0001 PWB ASSY
I
I
A 572222
1..51(
IL _________________________
:
~-!I i
..
I
141,
~
lor,
::
-0003 PN8 AJ5Y
J40:'-4
INT£~NAL
....
~-
r:t~ ~ -------'-i
I
~Q ~
L~ ~l~
).\
I
l ~
~
r.: <:
'XMTO
_ -......-+--+----~-)
I
I
I
au
..J~
i~
j
OTR
----r-+----··~?
J403-':\
5
ISO.
1
~~~hD
EIAD:i;CIVE
R401
5
CRlWSY
ER
EIADi::fr
r-L--------- ------------- . .I, L- - -In}~f
J
------
1+
I
JUMPf"RS
I
PORTABLE UNIT 01lL Y
I
~
c
INSTALLED ON Sro. I
__________ JI
r--~~-~-~_r-~~_72
r--t_----<.....-+---~-~
CAROET
tI RCVQATA
-0004 PIIB INDICATED:
•••• INDICATES A<'.~Lr TC FANSIDE OF
D
INSTALL PAPER DOOR (ITEM 4) BY BOWIN6
OR BENDIIV' AIVD INSERTIIV' STUt;)S INTO
HOLeS ON CO'l£ll
I)
"'''ER COVER
---.,ND,CATiS APf'LY TO FANSIDE ('F
INS~"'S (WITI/()(JT RIBS)
SLlD£ 1.... !iR T 5 IIVTO SLOTS OF INNER
C~V£R. RIDGES f»J 510£ INSERTS MUST
TOUCH INNER Cfl'IER ED6£. CLAMP INNER
£o:,f~~1fNt'~~t"io':~~ktKfxr;:J:r:[Y
4 MINUTES 70 ReACH Hi I'.
l
A
.210DIA
.12DDIA
2 HOLES
2 HOLES
ch'
W
0
•
=i
+
7.250 - - - - - - - - "
•
J
.,all
A (c-ro)
A
- --...........
.....~
~~
c
6
7
8
!5
3
4
.
2
o
C
»
eO
o
~
VIEW 0-0
OPPOSITE SIDE IDENTICAL
(B-4)
C
SECTI\Jf'I [-L
4- PLACES
~
~C~~~.o,i, (~~~f
2
D
l
•
B
~
e
0
CO
,..,
CO
m
0
A
a
J
o (C-6)
~
(r
i"n=,i,~
A
SECTiON B-B
2 PLACES
I MIRROR IMA(lE
SCALE 2 I
B-5
"-'cOF2.
FII.Illr,
LIST OF MATERIALS
Assembly
Part No.
OUTER COVER ASSY
Item
No.
Rev.
0983109-0001 A
Quantity
TI Part No.
Description
(llllll
410;)01.000
EA
I)Qa39aZ-0001
COVER,OUTER-PRINTER CASE
0002
00001.000
EA
0972449-0001
HANDlE,CASE-CARRYING,SOFT TOUCH
00113
00004.000
EA
0983Q01-0001
LATCH CASE
uOll5
,)0002.000
EA
,)418600-01<;0
RI VET .188 X.407 TU8ULAR,C'SINK HEAD
01)06
aOOO8.000
EA
1)4180 /)6-0,)35
RIVET .123 X.375 TU8ULAR ,C' Sf Nt<. HEAD
Oul)7
IhlOIl2.IJOO
EA
0972447-C001
CAP,PUSH-oN-HANOLF
oooa
J()oa2.II0a
EA
0972448-uOO 1
RETAfNER ,CASE HANDLE
A-95-
Remarks
s
6
7
4
1 .
2
3
NOT£S UNLESS OTH[RWlSe 5PEe/nW:
[Q
I IIU
ASSEM8LE OUT~R CCI[P (iT£IJ r),l[F T slOe
INS(RT (I,~,\.;''l:' .J~\L(,4rf,)~r- ,·,:,[I?T(17Dlf3).
BY ~PLYI':, r !: "
;. IJ (J St,r[(? P/·.nn~
150(Jr£f.f - -~, :. Til
!'. or r~1f~TI'"
'''',l7fO
AR(AS .... / ' .... ES 1
IS' -: OF j, ,E..R CC-VER,
-----INOICAT£.S F "7 sc .... I ',':RT:- (VIITHDUr
RI85\5L!L'~
Irs J";lfl )Wi"l (,
~'~ ,-r.[R
1)16h ... l' ' / 5 11f.;lUI) IrEIV' II
8
r,
RIOCf..') 0'1 r
[OGC CLt·~
D
-rlns
"J'JT ltiU(H
,
~I~
CN'l-Z9YI-3{[JC(J!!,'L",A/J
C
C!hl[R
e;
.! P ' :R AND '",'~[ "S(PT5
TLJ6ETHER ,;,. ;;J~" '; l - r ? A,-/l0I)XH11\TELV
.f.MIMlTf5 \'
,'If:i.' ,'rl.·, ... ·,[~d 15DBDJ,C5 SKIN
INS£COI [,5 1 [, '" ' ',,--AtE, HlP ADHESIVE OFT SKIN
AND HAND:"t
I I 'i l~ 'ION.
-NOTES CDNTI~VUl ZONE 8/-
stellON
~m(;)~-;:-(~A-zrtO ~UI;-~
,1/
/JF-
ICoN /(0
£)£/)('1( -of u:;r JIIA;ItJf.
1N1[IIiATICIIW..
(;.) JrDDrp
W17J1 7J''',,<),J'- ADJ T(,rl Allu
, ./16 7fl"}IIT ~~I
r;.,_ _ _ _ /-13-78
I)
0,;1"
EL(11E.M 10)
ON U"lDE.RS'DE. OF P~P,-~ DOOR (11£.M 4)
\0111 .. ,,,, !. 10 OF C.OIH.R LlIolE OF (11£1'14)
If TH£ 5.A.t(S, ORDER CONI=' ,G.UR ....'IOt4 ~HHT C)P(CIF"i'~
0')
m
10 AR
C
III
(A 6)
A
~P[CIAL
CU5TOMERS flAME
IN PlAtE OF IT£M
Pl~T£.
1"l5TII.ll
n . AT
PART
e.
8
8
CDV(R ASSY, 7-f3.W/t> TRANSU"M
coveR ASSV, 743 W/7H TR4A1SMIT;/AftIS
D(StRIPTION
fR
co·
r<)
{.OIO ....
()IIo.-.
';:"UIo.LL_TS~V
1I,>-y. .. J. ....._~ .........
1OF·"l-.y.....
P'_u.rn,
~
t.~SHO¥IIN
..
... SJ.QIIIMf'VdNCCOf&.V
~'""""CI"IAWf'IIII .. ~
LIST OF MATERIALS
Assembly
Part No.
743 COVER ASSY
Item
No.
Quantity
TI Part No.
Description
Remarks
EA
0983991-0001
COVER.INNER.7~3.ROUNO
00001.000
EA
09992~8-0001
INSERT.lEFT SIDE W/XNT LEV ADJ. VENTED
00001.000
fA
09992~9-0001
INSERT .RlGHT SIDE. VENTED
0004
00001.000
EA
0983865-0001
OooR.PAPER
0005
00001.000
EA
0983931-0001
ADAPTER SWI TCH
0006
00001.000
EA
0983932-0001
COUAR. SWITCH
0001
00001.000
0002
0003
CONT PWR CONN
:)007
OOOO~.OOO
EA
o 71233~-0001
FASfNER
0008
00001.000
EA
098.3913-0001
NANEPLATE.INNER COVER
OOOq
00001.000
EA
0983912-0001
LA8EL.PAPER LOADING
EA
0912799-0001
ADHESIVE SOLVENfLESS RAPIO CURING
EA
0983967-0001
PAO.FDAM .3 X 3 X
0010
0011
AR
00001.000
Rev.
09831159-0001 0
A-97
~-~O
ON-SERf
1I~
8
IT: AS5~', 'E_t
S:;£
~
(:'y[R , -U..l 1', cUT
_T[R
',5t;;;7"
(~£ .... ;
I
7
\
NOTES' {j,"L£55 O,'!ERNl5£ 5P!CIFIED
Z),tNT) ;'I(;,~T S j£
o
~~~~;~; ;~~l/,~C (~T(~~ ;/~ .. ~ _i~j Z~.~/D
E:::£
••••
o
:1--
F:'ii T 3
.~,:':'''''f:J·
't J.ji£A5
\~'ICATE5 ":'~;J... Y T~
- - - - I I.. JI:;,;~5
":'';;;LY TC FA~51DE.
INS;,O"(TS ,I: ,TdCUT ; 35)
SeiDE
CO~:.-R
TLl[
(H
,'.Sf"::'
;;.C'{'E5
',TO SLD'S CF
cr.
-;,J£
'/;R [[I[k t.=G£
c,;v=~ ".~
::
I
c
I
4
3
CENTER PAPER LOADING LABEL (ITEM 10)
ON UNDU?StO£ (j~ PAPER ;;';OP. (:TEM 4)
WITHIN :t.IO OF CENTERLINE O~ OOOR
,5£;(T5 I/JST
[_A~AP
,','VER
o
IF TIiE SALES ORDER CONFIGURATION
Sl'fET SPECIFIES A S?£CtAL (&5T':M£R
NAMEPLATE, iNSTALL iT IN PLACE iJF
THE STANDARD NAMEPLATE ftT£M 7)
A SIl2
L'
j
c
A
!
I
,
I
~
/' S ::~--=-----=-~---=-----~-----'·~I ~ ~
~ 1/,-......':::======:::91-- \ I
t:ll
[I
"@1J
J
]
B
2200044 -0002
-
I
2
INSTALL PAPER DOOR (ITEM 4)BY BONING
OR BENDING A'VO IN5£RT,N6 STUOS INTO
HOLES ON COVER (TElA I)
7l
B
I
O~
~..,=- ",S[:{T5 n::'~-I..,;i< .:.T
L/~E FOR f."t'fiJ1IMATELY
c
5
'.NER
UNIT PAlC,
4 M:fo.UTES ;0 R,;'::'I h/''vJ.,,',G 5-;;:,\{'T'I
CJ;r ) >1;< 'r1 '.. ==:-:;;; \51~_LAT'C~.
WAI?r.IN6· I.:"E;,VE IT£,',~ 1/ =;',:;5
SKIN TO A/I; Y 5Ji<;At£ ',S; :tNCS
kf£F ADHESII'E CFr:- Cf: SKiN I.NO
~A'.:;Lf WtrJ, :':.JTICN
-
~
F.:.r(E;i CF
INNER :ellR
I
6
COVER
----~
A55EMBL Y.- 7f3/">i>?,
WITri XMITI10JUST
1-2-2-0-0-04-4-_-0-0-0-,-I----:C:::-O:-:-V£::-:R:---cA-,-S-C;c-E-=-M:-"!.BL'..!.Y!:'.·~14~3'..!../7';3
\
WI,riour XMrTfiDJUST
PART NUMBER
DESCRIPTION
g
"'"
0
N
~
o
t-t-REVSTATUS
1 m lelBI I I
11121 I I
OFSMEETS ISH
A
HOL..ETOLER .... NCE
n1i~~~ TI--~~:~r n~.£~;~ ~c:_ . . L9 ~73e
~~~~ i~~86? ~:f;·
,.
/'1
•
'~~.::.AT~~:'l!
:50
6
7
8
5
4
3
2
D
D
c
c
»
cO
(0
B 2 PLACES
2 REF
SECTION
8
SJ./ I
A-A
(C-IP)
SECTION
51-1 I
B-B
(8-1P)
B
V
.".
o
o
oC\J
C\J
C
A
A
LIST OF MATERIALS
Assembly
PIII1 No.
Rev.
22CICJ044.OOO1 C
COVER ASSY, INNER - 743 W/O XMIT ADJUST
COVER ASSY, INNER - 743 W/O XMIT ADJUST
Item
No.
2200044.0002 . C
TI PIII1No.
QUll'ltity
D-=ription
0001
00001.000
EA
0983991-0002
COVER 71t3
0002
0002
0003
00001.000
00001.000
00001.000
EA
EA
EA
099921t8-0003
099921t8-0001
09992't9-o001
INSERT,LEFT SIDE via XMT LEV ADJ,VENTED
INSERT,LEFT SIDE V/XMT LEV ADJ,VENTED
INSERT,RIGHT SIDE,VENTED
0001t
00001.000
EA
0983865-0001
DOOR. PAPER
ODDS
00001.000
EA
0983931-0001
ADAPTER SWITCH
0006
00001.000
fA
220001t0-0001
COLLAR, SWITCH
0008
00001t.000
EA
011233+-0001
FASTNER
00119
00001.000
EA
0983913-0001
NAMEPLATE,INNER COVER
0010
')00c11.000
EA
0983912-0001
LA8EL,PAPER LOADING
AR
EA
0912799-0001
ADHESIVE SOLVENTLESS RAPID CURING
0011
it-ItO ON-SERT
A-100
Renwks
for-0002 GIlly
for -GOO2 only
5
1
4
NOTES. UII.'I-ESS OT;'F:RWISF: SPECIFIED
WIRE
NO
I
2
COLOR (8:AC'<, TYPE: to OR \~HITE, TYPE: 9)
Slf4LL CONT"ftST WITH COl-OR OF IUM 2 OR ALTERNRTE
IT[M 5
~ \\'(R~S S'-IALL BE CR MPE:D IN COM'I10N
RECE:PTACLE PE:I? WIRE: LIST REGUIRF:MEATS
IT]
@]
o
3
MOTOR
MOTOR
MOTOR
MOTOR
MOTOR
MOTOR
MOTOR
MOTOR
PLUG
BOBBIN 1-£::1{
I
~OeBIN
I P25"l-1
I
P252-3
PZ5"l-6
P252-S
/
/
/
RED
YEL
/- YlHT
I
5"
~:-El'N2-BUC,!PZ52-3
Eo
rEYING PLUG SHOULD BE I'>!STALLED
SUCH "TY/l"T ~E£PER PRO. EC"TS THRU h1E
RPPROPRIATE SLOT 'N THE HOUSING AS
SH(>WN IN SECTION A-A
... ALL "'A.T£RIA!..5 ML'ST MEET
REtlUIR£ MiNTS
DESCRIPTION
7
S
-
VL
~:~ ~~::;
•
BCf3BIN 2 - WH'r
-
I
nS2-4
P252-2
~
~
A
C/>/429301(/)),(
"'.v"_
tOO! 25 W,4S 738
(11]);1./
~./Z
/}
:
(gJ
o
/
"
-
c
C
PIN I
~
-0.
~
-
~
.
~ F38t'Z5-&6~~::::-==n ,_~,
r:
2
:
AY.
~
lPl~'~~A(B_7)
~
'S=p'
_
'0-
MAkK PER PRocess ,
IlPPROXIMI4TElY WIiERESHOWN
3 5 REaD
4~
.1R£F
B
A
~
BBlN /
_,
B
t-.0
~
o
\~
-
SECTION
(C-7)
o
o
N
N
-o
-
A-A
SCALE: NONE
(ITeMS 2,
3,1-4 ONLY)
A
/ IMARK
$10
IOI.IIIT
I
100-07
100 I
'mc...
III
I
ADOfTIOfW.
f
30
LM
LIST OF MATERIALS
Assembly
Part No.
Item
No.
0001
Quantity
Description
TI Part No.
()999256-0001
MOTOR,STEPPING PAPER DRIVE
EA
0912~84-0006
CONNECTOR HOUSING 6 CONTACT
EA
0912104-0001
CONTAcr ElEC-LOCKING,.[RE-TO.025 SQ POST
EA
0912599-0001
KEY,POLARIIATION.CONNECTOR
00001.000
EA
0002
00001.000
0003
00005.000
0()04
00001.000
0004A
ITEMS 2,3,ANO 4 CAN ONLY
00048
8E USED TOGETHER
0005
00000.000
EA
0112701-0011
RECEPTACLE,TERMINAL- 6 CAVITIES
0006
00000.000
EA
0912482-0006
CONTACT,ELECTRICAL,CRIMP
0001
00000.000
EA
0800335-0001
KEY,POLARIIATION,CONNECTOR
0001A
ITEMS 5,6,ANO 1 MAYBE
00018
USED AS ALTERNATE ITEMS
0001C
FOR ITEMS 2,3.ANO 4.
00010
ITEMS 5,6.AND 1 CAN ONLY
000lE
8E USED TOGETHER
OOOd
00000.100
Rev.
2200045·0001 B
MOTOR ASSEMBLY, 4 PH STEPPER
FT
0912436-0012
INSUlATION,FlEXIBLE
A-102
Remarks
•
7
2
D
o
c
Ir
.4EX~ Tit
6 "-4Cl1ll/4 PH
J
CH"l411~~(c..)Cu-'I"'~/'JADD~D
A TO "I'D ell
A£)D[O
ell CHATtO • Z LM
CASu NO ~
I
c
PlACES
" []li)
•
BI -0002.
8
I -
I
·,TtJT~.
..
O'-'E'"
-
&"1
DEscaIPTI~
o
-""""""A
\
.30
FUll
lM ........
It
LIST OF MATERIALS
Assembly
Part No.
MOTOR, DRIVE-PRINTER
Item
No.
Rev.
0983812-0001 D
Quantity
TI Part No.
Description
0001
00001.000
EA
0983813-00C1
MOTOR,WIREO
(J002
JOOO1.IlOO
EA
0983814-0001
SENSOR,FEEDBACK WHEEL-MOTOR
0003
00001.000
EA
0983870-0001
CAPSTAN,MOTOR
0004
00001.000
EA
0215505-0001
W"'EEL,FEEDBACK SENSOR
Ou06
00002.000
EA
(')972988-0013
SCREW 4-40 X .250 PAN HEAD CRES
00")7
OOO'J2.uI)O
EA
0411101-0051
LOCKWASHER f 4
0008
00001.000
EA
1)418212-0040
STRAP,TIEDOWN,ADJUSTABLE,PLASTIC
A-104
EXTERNAL TOOTH CRES
Remarks
I
4
1
2
3
m
. ~ .. " 'N01E5:'UHL£SS OTHERWISE SPEctnED ~.."...--.._ _ _ _~=-:-R,:,:E-:V_IS_I_O_N~S_ _--;r--:::-:-::::-T~==i
CHEC~ THAT NO BINDJNG 'OF
ZONE LTR
OESCR,P'ION
D.. TE
........OVED
lltt SCREW (IT. 41 IN THE
/14. Ry/;,J!.o....J ]-21'7S
r:::LJBRACKET TONGU£, sOUows
PICTtJIUAl.. ANI) N1J7£ Z t'2JADPED
III /J
0
OUT AGAINST THt SLOT END.
ITEM 7
t·/1w1, ~ j
ASS£M
'EN SOR "l£M I)'
m:.. TO
II
eu
CARRIER (Iff"" 6) wnw
IlTlM 7). CLAMP IN POSITION AS
P(~ METWDDS INSTRUCTIONS.
A,l.lDW TD CURE 24 HOUR~
.tto~ IN!!tTAU.IN& liN H£II.T
A5SY"
t
!}
c
I
r-
-
0
,
Z
~l ~ril
.....
U1
1-.-
~
I
I
_r=-1
---~
I~
7 Aft
-------
.lw
lurn
I
~
_
.[J~
~
L"~
B
,..'
44-4QXI-I/Z
.n
~
c
t
I
- . . .:=1
'n
3
B
•
A
PARTS
LIST
~
_ _ _ _ _ 1_
TEX,'.
INSTRUMENTS
'''4. 1Hl1HI."'. 0
A
LIST OF MATERIALS
Assembly
Part No.
SENSOR, FEEDBACK WHEEL-MOTOR
Item
No.
QuantIty
TI Part No.
DescriptIon
0001
00001.000
EA
0983820-0001
0002
00001.000
EA
0960117-0001
SPRINC.FEEDBACK
0003
00001.000
EA
0983920-0001
BRACKfT.MTG-FEED8ACK SENSOR
0004
00001.000
EA
0912988-0023
SCREW 4-40 X 1.50 PAN HEAD CRES
0006
00001.000
EA
0983919-0001
CARRIER
EA
0912799-0001
ADHESIVE SOLVENTlESS RAPID CURING
0001
AR
Rev.
0983814-0001 B
SENSOR
A-106
S~NSOR
Remarks
I
1
.·_1
2
629 ~3 6 3 3
'1... ;,#~/C
TEXAS IN ST RUM EN TS
INC 0 " .. 0 " AT • •
DIGITAL SYSTEMS DIVISION
HOUSTON. TaXAS
So s:7~8/~!;.lU PRI tJTHEAD,
AS S Y
,.....--------------------------1
t-------~-+-------------I~I..=!'r~,:;;IJI!IIII~I_~.,::qIfin-W",q.,-..
__
~
.Ast'"......
_
L 'IlL' I
J.-------~+----------..J::II~~"1~7'.d·;,r 7W'11\
1m. .
k:J2'..I.J?i~rFuLL' B'
983829 ,_.
D
LIST OF MATERIALS
Asambly
Pm No.
PRINTHEAD ASSY
Item
No.
Rev.
0II3I2S-0001 •
Quantity
TI Pm No.
Description
OUul
UOOul.000
EA
~q8383O-0001
PRINTHEAD ASSV RESISTOR SELECT EPN 2-1
0002
00001.000
EA
0983922-0001
TAPE.DOU8lE SIDED PRINTHEAO CABLE
A·1OS
R..-ks
I
4
WlRlN6
WIRE. UO
I
0
t
3
~TIO~
LIST
COMP CONN
START STATION
CO.... CONN
REtMRN
OJ
ITEM NO
MOTOR
81- !lIED
P30C-1
MOTOR
B I-BLACK
P302-2
ARl INTER-
B 1-5HIELD
P302-3[~]
C.H~6U.LE
PINS lAND!
I
~
I
[jJ
I
.s-
1
REVISIONS
ZONE LTA
COLOR (JucK. TYPE 6 OR
WHITE) TYPE~) SHALL CONTRAST WITH COLOR OF' ITf:.\A4.
FMSH STATION
F~
MOTOR
I
2
NOTES:
~AN
FAN
~
3
IH!I-15
A 4095'11 (C) 1 ~.__
I) DIM,lo.l(:ft~O"WA5 IO.lChld',
i) ADDED DIM • 2.0"! .ld".-
c-~
C:~
SUPf'OlfT SHAFT Of ITEMI
WHILE INSTALLINt:, ITEM Z.
USE ITEM 7 A.S N£C£~SA~Y TO
e
DATE
APPROVED
4 14''5'
lO--
DESCRIPTION
4/5530 (0)
~"'DDEO
f)/.~
I"TE.M'"
4
", ...
~/", ~
2)ZIJ c-2 .20 01 .... TOL. W"",~.dI
7-/4-76
"-JO'Te
~
CONTAIN lOO!:.r. STRANDS OF"
f!5RIlID.
4
e.. [1]
-
- ~OlO±~~r-
~
0
10.10' :'2.6'
I
~
MARK APPRDX
WI-£R~ SHOWt-l PER
PROCESS I
--+
c
PIN I
AR(}]~IO=
0
,
t!i
.3 3R£QO
1
C
0
-1-.50
--. ZO -.20
+f.l(l
t\J
aJ
(I"J
aJ
(f'1
B
-
U
f.-
B
-
I
1I QTY
·2 1 ·1 liTEM
AEQO I NO
CODE
IDENT
f.-
I
I
UNLESS OTHERWISE SPECIFIED
A
MARK \100-01
710
SEa IDENT I F"-SPE.C
loll
I
~
NO
,
.
5
rn
ADDITIONAL
t.LASw:-ICATlOt.l
PARTS
UNLESS OTHERWISE SPECIFIED
-DIMENSIONS ARE IN INCHES
- TOLERANCES
ANGL.ES
13 PLACE DECIMALS
010
2 PL...ACE DECIMALS
02
REMOVE ALL BURRS AND SHARP EDGES
• CONCENTRICITY MACHINED
DIAMETERS 010 FIR
• DIMENSIONAL LIMITS APPLY BEFORE
FINISH PROCESSING
• IDENTIFYING NUMBERS SHOWN IN
PARENTHESES FOR REFERENCE ONLY
• INTERPRET DRAWING IN ACCORDANCE
WITH MIL STO 100
*
Tr~:!:= 1~:!:8A~ i~:&\f
*
*
D~~
NOMENCLATURE OR DESCRIPTION
LIS T
OATE
.•
"-1L.-7'~ r . /~~_?_7r
!-7·f,
983801
C~~':: ~, _A./I.'J!5
~V./I'l~EA}'.t6'A.r
NEXTA5SY
8732
USED ON
APPLICATION
~r~;N~~
SCALE
i
Equlp".."r Group
FAN
~~ ~ '!,-)'Jj~
1/1
I
I
PROCUREMENT
SPECIFICATION
TEXA~,! !:Iwl!!Rf!.Y!:' ENTS
~
Z7 Mk(l!J
C~~4:
Q~L.
HOLE TOLERANCE
T~:~~~ T~~= T~~=
I
PART OR IDENTIFYING NUMBER
D.II."
ru_
A
ASSE~BLY
ORAwlNGNO
I.:v 8
383BES
I SHEET
LM
FlMEl
LIST OF MATERIALS
As.mbIy
Part No.
FANASSY _
Item
No.
Rev.
0983125-0001 B
TI Part No.
Quantity
Description
OOal
~OOOl.OOO
EA
0972486-0002
"OTOR,FAN 12V DC
0002
OaOU1.uOO
E4
a972489-0001
BLADE,FAN 2-5/8"DIA .078 BORE CW ROT
0003
00003.000
EA
0972104-0001
CONTACT ELEC-LOCKING,WIRE-TO.025 SQ POST
0004
000U1.000
EA
0972"8-rOCl03
CONNECTOR HOUSING 3 CONTACT
000 itA
ITEMS 3 AND 4 CAN ONLY BE
USED TOGETHER
00048
0005
J\)OOI).OOO
EA
1)972482-0006
CONTACT,ELECTRICAL,CRIMP
0006
000;10.'-100
EA
1)772707-0034
PECEPTACLE,TERMINAL- 3 CAY IT IES
0006A
ITEMS 5 AND 6 MAY BE USED A
00068
ALTERNATES TO ITEMS 3 AND 4
0006C
ITEMS 5 AND 6 MAY ONLY BE
00060
USED TOGETHER
0007
AR
FT
0"17177-000"
INSUL SlEEVG,ElECT-HEAT SHRINK INDIA.125
A-110-
Rem..ks
,
f
-0001
A
I
I
2
REiAINER CLIPS AND SC.R£W5 rl.:.;;TI-+_ _ _ _ _DlSC:.::.:=IIPT1O~N_=___ _ _ __+....:D:;:ATI=-...j.I---=APPD==__:__I
INCLUDED \NllHG1~M
-A.J40G446(£) !lkN;J).?PS 10/t??/75
~hq,hJla-i~
[?J RETAINER C.L1P IN51ALLED WITHt---rA_D~'N.~'D---=-1):........;.Ir._£_M--=-5_ _ _ _ _ _~-:-_...-- _ _-I
THREADED HOLE ON~AME
is 14D9BlO(E) .." 1 " '
11-~-75
0./4,/,,1 .... _ ' A
~IDE AS SCREW HEAD.
~
'-' LA.~"T
,
~- --@]SC.REWS MUST BE THREADED
I) ~ODEO NOTE
C.OMPLETELY THRU ~iAINE.R
z.) ADDED I.D'· 'TDTAL LENGTH TD WIRES.i 1 Z +3.
c.L1 P 5
r::-1) )
3) OM F/D~ ADDEO ~ AND DUTU NED PIN -REV AREA 0'1
I ccA'v\G IPVCVYH\l( 3.0 IlMTIHMITDA1A PH3 PI-:) J\.lMPlR ON p\ 4
2 22 AWG 1P\CVt'H\1E3.0!~"D-RCVDA1A PI-IZ P\-fl JUMPER Ott PI 4
3 22 AWG IP'l: WHilE 3.ilILDEI-CARDET PHI P\-2 JllMP£ROt(Pi 4
-0002
I ZZAWG IPVC WHITE' 3.0 XMTD-RCrD PI-13 PI-Il JUMPE£
Z 22AWG IPIC Wl/lTe 3.0 DTi-WET IPI-151P1-IIIJUMffk
o·
GJ
4
4
rn
2. PLF\CES:i\
-
Z PLACESf3l
L.::J
~ 4100~~ (.0)
J
~---n.rll~::::~M
~
B
~
~
"-
P. I
lnl~)
MARK TI.. _
PER PROCESS I
(FAR 51DE)
\Jr~
1
:
NO. SCHEDULE
(FAR SIDE)
,
MARK
I
\00 -0\
7\2.
2
PI
, PLAClS
.3
4 PLACES (-0002J
. ~.JJ.,..,J.
\'Z.-9-1SI/:z.'1·171/.7Ij...v<"" I-CHANGE;D NOTE z. tWAS "- ___ WI TH LARG.E
HOLE ON SAME ~IDE AS SCREW HEAt). II
(-ooo/)
~ 4/~e51 (0) ~.;.~
A()/)F£)
CN+Z/768(C)/f."o...K-
~
-J
F'
PIN I
II
'-MARK PER PROCES51
APPRDPRIA'H.. PART
eN 429340(D)CLAN~LJNAI{tlJ-I."2
!
/J
I-S~7B~,t'~
CN4183/S(C) ,J. ?J).i-1(IJ P/II/(')P
~I7NN
WA S
AT r~p
98384'--0002
/J-----;;---;"ii
4 .. ~·?8 "A~
EIA TEST
~9._B_3_B_4_b_-O_O_O
__
I4-__P_1______~C
~
PART NUMBER
MARKING
SNEOO~I~D~EN~T_~I~r~-s~p~EC~~~N~O~I~________~A~D~D~IT~IO~N~A~L__________-J
PROCESS
CLASSifiCATION
I
or
-
I illS
-«102
I
-0001
Q1YRfQD
I::" i"::: 1=-1
PAIl
1
~
1
DESCIIPTlON
LIST
Of
MATERIALS
I--_-=U:..::NL=ESS::....=;OT~HE:::.RW;;.:I:::.SE.::.SPE:..::C::.:.:.IF.:.::'ED:.....__
_IPIOCESSES
DECIMAl. .xx :0:.02 .xxx :0: .010
flAcnONAl. :0:1/64 ANGUW:o: I·
CONCENTRtClrY MACHINED OIAMflEIS .004 nR
AU OIM£NSlONS TO IE MET I£fORE PlATING
HMOVE ALL 'URIS ~I\jD SHAll' EDGES
D:> NOT SCALE THIS DRAWING
AU OIM£NSlONS IN INCHES
SURfACES MARKED ./ TO HAVE
D
v'
DRILLED HOLE TOLERANCES
;013 TO .136 :: .88~
136 TO 2SO ::
2SO AN-O ABOVF -+ 11M
1
I
881
2
B
CN4-2934 71/))5.D~/lJ,lJOO£j;) ItJARK TI
I /J,:J "A, ~
flMlIJIlKIN6 WAS' NEARSIDE
2-H--?8 ~K~(5 ~
f(UMBER ~D RE~\5\Ot\
TYPE.
L:i-----l
(1)011; ALL
LM ITEM 3 PIN WAS /S?f4-:iJ-fKJOS
G
CLR WHITE.
"1,0.1-1 ..
~~f.HI.~°'J.)~:ELI;:fsTlfO~~'Q~f~~~~ 4-19-/7IcJl·K?~
(FAR SIDE)
I
11-4-7/'
-~~z jJ/1J!E Di5cefpr;~.v,-~1 (-(}()oz.
MACf,'1AJ6t, IJ(lD AOOcO -OO()t J.M
IE:
MARK PER PROCESS 1
fjS SHOWN IN PART
c
4
~I 51GNATURE SIAR1RNIS:·
" REMARnS itEM ~DiE5:UNlE55 OiHERW\5E SPEC-IRED
It-'"'
~~i
IIfVISiONS
~~I
5i A 51A
1'0 (I]CABLE CLAMP SCREWS ANO
t-::--r------=--------~----r---I
WiRE
NO DESCRIP110N
30
3
,
'38384~
r
LIST OF MATERIALS
Assembly
Part No.
Item
No.
Quantity
Rev
0983846·0001 H
SHORTING PLUG, 745 W/AUX COUPLER
TI Part No
Description
Remarks
OOOl
00001.000
EA
0539903-0005
HOOO,CONN 15 PIN WITH RETAINERS
0002
00001.000
EA
0539409-00J4
CONNECTOR,RCPT 15 PINS
0003
00006. 000
EA
0539430-()004
CON TAC T, SOCKET 24-20AWC. .068 INSUL DIA
0004
00001.0JO
F-T
0538341-3999
WIRE HOOKUP 8-22 AWG 19 STR
EA
0910669-9901
OMNi TESI PROGRAM FOR SHORTING PLUG
PI
0002A
0005
REF
A-112
WHITE
4
3
N~H~:\JNU!i'!l Ollll~IWI~l'\P\
NO.
LlIllD
L!.jUWH ( \ AMP ',LlH W'j I\NU III lAIN! H ClIPI!)
I~
[?J lA~l\:
ITEM
o
I
"t.. WHTI Rt:,D
~
"'Zl'tJHT
..
.22 WHT
5
6
1
8
I- 24 WHT/RED
9
*22WHT
.. 2.4 WHT/REO
.. 2'2 WHT
II 74 WilT IRED
-22. WHf
10
I;!.
'-
I~
N,Mtl
XM'TD
nevo
22. Wj.jT
3
.4
II
~~fl
p ''2IJ/~'T,)
5GNO
COtT,IOCO
.. 22 WUT
.. 22. WHT
.22 WUT
PI'I)
1-'2'1
DAtA'TtRMlNAI.
PI-13
P2-2
PI-I2
P2·3
PI -10
PH
P2-4
Pc-7
P2-8
I1
PI-II
PI-I!l
PI- a
OTR
Rev CA\~
J.MI1' D~TA PI-3
P3-2
SGNO
I'\-I~ p-\ 7
CM~\)r.T
PI ~
P!·r.
•
I~.J*~~ ~Br __
"'r"l
P(;'Nll J " I
c:.TS
PI {,
II !if.' ._o~n.
.t.I-r.
AND hLRL\N'j INLI 11\)\ U \Nli\1 rt It. M I).
ClIlMP ':.lLHlW,;) ANL> '·n. f/\INUl U IP~
P.ND 5lR~.NS INCUII.,jE.O WI1i-! (ITEM 3).
RETAINE.f1 CLIP IN5\,ALLEO WITH fIIREADE 0
HOLE ON 51\~i': SIDE. A5 5C.RE'N HEP-.O.
@] CABLE CLAMP OE\AIL IN P2 At.D P3 SAME.
A':I PI.
~ SECOND WIRE ON PI END QNL,(
~ SCRE..'N·-) MUS, BE" ,"~EAOEI) Cf)N\PLElt!L'Y
,IIRII ~Ei1\INF.1\ LliPS
,..
/4-
III
14-
I~
..
14-
?2-2D DAT~ ltRMlNAL
P3- '; ACOUSTIC COUJ:\.ER
I.
/
I..
/4-
,':"
"'~I
,N,I' ''''''' iJ.Jr~ Nl1f r"""K 1"1
I{ II' 111I1I"/N.
".lV/IIII N~u ....Jo(A~.j'lI.... " 11-1_.
AlB NUl uo:.tU ;\"'1) ... 111'11 r'l_ II to'/Ir,JA'r."O
I~JI/)l I "'NflJl ( I f II'( WY 1.,II-lW
A M/NI""IIM
~o \"~.lIt ._, I "'(;1"\ ~'/N In WI",!!..
(LlNIllt:LIIl"N·.>. /\NU ~LL NlJT We. ~'RIPP!:O
Ii
,~
I \ ~ "I
I'~." AV)\I'"jT\C\JlUM
I
. ill ;~~~!:~ I~"!"'~~; I::;I~ r~,';tr~'7~f~~~~~~JM
18
I'~'I
I
2
t, 'NN/,
[ ". I.. _ .1 :.-...
[ell>1I1\!
14
I~-
ut'
---::OF ANt-
~
5
~)
!
7RI:.QO
,
c
(4 PZ
~
~ 410UI..~ (0) ~
C~"Nr.. ED NOT\::. '3,
L1:\..
-III
.-
2
c..
fl/! PROUSS I
/
Jf~
ru
WA~
I', ."H;jLE
I
r-MAilt TI
,MARK PER
~J~"ROCESS
wW
\~ -'3 /S111 01- ,II
" ____ WIT~ Lt.I2.G.£.
ON C;AN'lr;. SIDh Aca SCII.EW HfAC."
t~rtON;-
NOT£S CCUlTMIULD CW 5/-1.2.
- - - - - - - - - - 7 7 . 0 0 : 5.00 - - - - - - - - - - - - - - - -__
I I
/
INiTAIJ.
~A~ SIO£
"'AU T/
r\
I,
0, '"
rJ-----f.
H tN424 580 (Cl {). ').(o..W..aU
2.00t.~O
S J
~-I. \1"
\
~
--[3=1
A
, GPL
IVIARK- APPR0P~IATi.
PAR 1 NUMI..'II I~ ANl)
Hf VI~JION
P H
PROC't.~~
t;itf4
ttJA~)DU)
12.0.qD
~
S"
J ........ (IJAMLIJ J/f)Tf ~
S7R;/P J;fAl'nJ.6<,(!)'F -,1'1:._
f'.r()([SS,,¥lAS
l()o'OI(~)LMJ
L WA5 /(5)LAI) 11.0111
ITiMI.,.(.JTY
"/At w"J
fll/,
~f·."'C{)
cJlM)I"M~ riA; w,,~ :Y~~fO W'" U)
~ &J~.J.JLII"""!J:J·..i~JA.lv,,~(' ::1( ,_._
"'\A~K Pl:::~
PROlESS.
>1
0."
,CAl 4SM.:J9M4
2 I,
..
\
.J
'li .iJ/IIJ(M ,.11Ii
K ('N~2'1~4tJ(/I/I'(tlV
/0 I W WM
~o -CO" -r.
1_ "'.7."
~ ,~
u:r
PE.W
PIN I
'\, Ellitn
@AR
B
r IIAN(~I
J
dltl'1\:
nrVlof' 0 P£H EXT LNSIV( l Nr:.R
S
,'AI ./,'(J;~).~' (L'I/f~,1tII1I '/)Lt1! ;1.-hI
),A , •. 1
II W.4,' ./I/".f./. ,J.t
II'/YI/.,-~-
(I)
~
PIN I
NOT£S: (rrw,J
I
REV' STATUSI REV
-
2
M~R"
100-07
1Il
I
MARl(.AI f
S
34
-
It
A
.-----------------~----.---+----~-4-.-
..,
B
NI\~I-
I
L.
1"... · , / ......
LM
""
f lilo,;"
LIST OF MATERIALS
Assembly
Part No.
CABLE ASSY. EIA/AUX ACOUSTIC COUPLER
Item
No.
Quantity
0983847·0001
TI Part No.
Description
0000 1.000
EA
0539903-0005
HOUu,CONN 15 PIN WITH RETAINERS
0002
00001. 000
EA
0539409-0004
CONNEC TOR, RCPT 15 PINS
PI
0003
JOO02.000
EA
as 39903-0001
0004
00001.000
EA
05 39409-000~
0004A
HOOD,CONN 25 PIN wITH PETAINERS
CONNECTOR, PLU G 25 PINS
P2
0005
00007.000
EA
0539430-0003
LONTACT,PIN
0006
00006.000
I:: A
0418201-0060
STPAP,MARKEP,AOJUSTABlE,PlASTIC
0009
00001.000
EA
0539409-0006
CONNECTGIi,PCPT 25 PINS
0010
00019.000
EA
0539430-0004
CUNTAL T,SOCKET 24-20AWG .068 INSUL DIA
0011
00012.500
Fl
0972436-0013
INSULATIUN,SLEEVING 2
EA
0970f,70-CJ901
OMNI TEST PROGRAM FOP CABLE ASSY
FT
0538347-2299
wIRE HOOKUP 6-24 MiG 19 STR
RO/WH
riIRI:: HOOKUP 8-22 AWe, 19 STR
WHITE
PLA lE:, 10, I::OP CABU
0009A
0012
24-20AWG .068 INSUL DIA
P3
REf
0013
00025.000
0014
00064.000
F-T
0538347-3999
001'5
OOOJl.000
I:: A
0962571-000'5
A-114
L
Remarks
0001
0002A
Rev.
X
.263 pvc
4
+
3
I
2
-
c
B
B
I
MARK! 100-01
!'.1ARK
100 -01
2
I
-
I
1712
712
CLR WHITE
CLR I:3LAC.'tI
HP[ 5
HPE '"
r-~--~~~--~------------------------~--------------------~----------~~
lr
·2 I .. J ITEPA I CODe
QTY REOO 1 NO' i ICENT
PART OR IDENT'FYING NUMBER
NOMENCLATURE OR DESCRIPTION
I
~--+-~'P~£N~T.t--'F~-S~Pr.EC~~'~H~O-1----------~A~DO~'T~'~ON~A~l---------SJg
I
PROCESS
I
CLASSIFICAilON
I
I
PARTS
uNLESS OTHERWISE SPECIFIED
REMOVE ALL BuRRS AND SHAr. a 1E:00i:.S
eCO,,"CENTP CITY ....... CH
D1A~ET£RS 010
.t..f'\Ki,L..£S
r IR
BEFORE
• ~A~1T~~~~E~'t6~:E~i~~2E I~LY
•
~1~R~PLE~T~R:~,...G
IN ACCORDANCE
6-2f'Ts
iL3."-:/?,,.-r.'" c.
/-24-7S
QA/:
T~~ ~ ~ i~~: ~p ;~J:
t5:
.t\td
8732
t~~~~;;~~AT~~~D O~
J4
.. ,.,
AP1-v.
HOLE TOLERANCE
S
1-
[,W"c.E: r.:-0,{j'~"
2 PLACE DECIMALS t: .02
1-------4-----+--4--'
1-------4-----+--4--1
T~~}~gr. T~~~:~ T~;'):~ -~e3800
,"
~
PROCUREMENT
SPeCIFICATION
3 PLACE DECIMALS t: 010
• ~/~~~S~~iJ_~~~~S APPLv
A
1-------1------+--4--1 :~~A~~SARE IN INCHES
~[O
I
LIS T
i
.~ /,f/
.f/3' /' f-.:;IiI,l.,J,t· .~ ,. .r;
CABLE ASS'll E.\.f:\.(I031\')
INTERrACE
A
LIST OF MATERIALS
Assembly
Part No.
CABLE ASSY. EIA (103A) INTERFACE
Item
No.
Quantity
Rev.
0983848·0001 G
TI Part No
Description
0001
00001.000
EA
0539903-0005
l·mOD,CO~N
0002
00001.000
EA
0539409-0004
CONNECIOR,RCPT 15 PINS
')003
00001.000
EA
053943(}-0004
CONTAC T, )OCKET 24-l0AWG .068 INSUL OlA
,)005
00001.000
EA
0539409-0005
(.ONNH. TOR, PLUG 25 PINS
0006
00001.000
EA
0539903-0001
HOOD,eONN 25 PIN wiTH RETAINERS
0007
OOOU2.000
EA
0418201-0060
STRAP,MARKER,ADJUSTABLE,PlASTfC
0008
00006.500
FT
0912444-0014
CABlE.2 SHlD PR w/DRAIN .195 X 1000LG
0009
00007.000
EA
O')3943(}-OO06
CONTACT ,PIN
EA
0910611-9901
OMNI TEST PROGRAM fOR CABLE ASSV,INTfC
0002A
PI
·J005A
0010
15 PIN WITH RETAINERS
P2
REf
A-116
24-2DAWG .068 I,..SUl OIA
Remarks
4
'\'~FI
D!:fC~IPT1J~
1110.,
'2 Z ~\"G
I
8RN
I
ZZAWG BLK
Z
0
.g~:
~§'
3
1~2
4
5
:. 2.AWG \PI,(. \\'--,
J22 AWG 'PV(W\f:-:t..
t\WG 'r'lC VI-
I:.J
I
I
5T~. I ~T".,
START F1NISHI
SIG:'tAWR!
OT
!
I
P'-!)
P1-+
p,-
DR
IXMT:)-Thl\1DATA
'3
IR( '. :'-'<1..'; DATA PI-l'a
C~ET -CARnET PHI
I
~
3
EI
E2~-3
PI-a
REMARWS
ITEM
NO.
:m> I~ DATA
ilP
~\( IS OATA RIl(j
;
5
uUMPERON PI
0\-
",Ut(.ilE~ONP'
PI-a JuMPER. ON P\
""4
2
r-.OTE5· UNLESS DTHERWI5E 5PEClr:EO
CABLE CLAI'·P 5CREW5 AND RETAINER
CLIPS AND -REVII5 INCLUOEO WI1'H
[!J
I
REVISIONS
Zc::w-E
a
~TEM~.
HOLE ON 5AME 510E AS SC.REW HEAD.
5CR~WS MUST BE iH"EAOEO CCNlPLEla)"
"'TItI\U Rc.iAI~c.R. CUP~.
4.- nils CAe.L~ 15 TO e.~ COJJ5TJWc.n_D
WIT\t U.L
LlST~D
MAT(RLALS, OIJLV.
_J
DESr:RIPT.ON
1 A 1",,010025 E E.E..."7~ 8·IZ-75
t--- I. ITEM ~ WA5 53384\ -DOD'
~. ITEM 1 P/~ WA5 4\1~~4 -0001
~ ETAI ER CL'P IN51'ALLEO WITH T"REAOEO
m
LT~
I
;:;ATE
I
'APPROVED
I
1..----1.---1
FORMAL RELEASE
I~r---------------------~----.-~~D
B 140&4 4"'(E) ~I&1'",.. ~ 10·2'2-;-5
11AtIlr IJdl
I--=J ADDED J) ITEM /0
~ 4098Zl.(E),7 ~,-,
1) AOOED ND'TE
ONF/O:t1 luNE
rn·
z.-c.
11-'1-75
'MDE.D
rn .
3>ADDED E'~El. ONSPN:lE. LUGS.
,.Q.J
-
4 IOOc..~ (0) ,(. w.i-.J.
1'2,. '3 -1 S l,z.q.1 7
NOTE ~ .. WAS· ____ VJITH LARc.e
C.I-\AN~ED
ort SAME SIDE AS.
If llJ.-~~~
~OLE
SCREW I~EAD."
c
B
I
2
I
-
B
MARKI
MARKI
SEO I IrENT
NO
I
100-07
100-07
7\2.
712
F·SPEC
NO
c.LR WHIlE
TYPE ~
CLR BLK..K
TYPE. 6
ADDITIONAL
CLASSIFICATION
PROCESS
L
·2 1 ·1 J ITEM
CODe
!I
NQOF..NCLATURE OR DESCRIPTION
,:»PE(;:IFIC4.TION
r~~--~~--~------------------------~------------------~------.----~---1
J.I
QTY REQO
NO
IDENT
I
prOCUREMENT
PART OR 100NTIFYING NUMBER
I
I
UNLESS C ..... ~RlItr'lSE SPECIFIED
PARTS
~--.£SS
OTl-tERWlSE SPECIFIED
J--·...:...--.....:.~:..:....:--=-=~-t-----;----1-;--1.[)OMENSoQNS ARE
IN INC>ES
• REMOVE ALL Sl...-RRS ANO SHARP E D G E S t - - - - - . - t - - - - + - - t - - - I . TC"LERA.NCES.
_CONCENTRC TV MACHINEO
ANC'.L..ES:a: 1OIAMETEQS :10 FIR
3 PLACE OEClMALS
• OIME,... ·~ C"-Al. L ... TS APPLY BEFORE
FINISH PI:fOC£SS r-.G
eIDENTIF'I' ....G "" .... ~B£RS SHeWN IN
A
* .010
2 P\..ACE DECIMALS S:-02
LIST
D"N£EA"'~ 1O-2S'?tSE
ut(5"~.c
7-<.4-75
CABL E ASSY, MOD'LM
A
PAR£~THES£S FO"? REFERENCF ONLY t - - - - - + - - - - + - - t - - - I
•
~t~R~PLE~ -r;~l";j;
Mi IN ACCORDANCE t - - - - - + - - - - + - - t - - - f
HOL£ TOl..£RANCE
T~::U: ~ T~~ : ~ T~U: ~~P~8~3~8~(?..;O~~8..;7..,~~::>~2+_.....-tl
,~~ ~ ~ ~~~ ~~ i~: &W ~~~:::~AT;~~:J eN
:
s
t
LM
..
LIST OF MATERIALS
Assembly
Part No.
CABLE ASSY, MODEM 1/F
Item
No.
0983849·0001
Quantity
TI Part No.
Description
Remarks
0J01
,)uO:)1.00ll
t:A
0539903-0005
HOOO.CONN 15 PIN wITH RETAINERS
Jon
JOC01.000
EA
0539409-0004
CONNECTOR,RCPT 15 PINS
00008.000
EA
0539430-0004
CONTACT,SOCKET 24-20AWG .068 INSUl OIA
0004
00000.500
FT
0538347-3999
WIRE HOOKUP 8-22 AWG 19 STR
0005
000ll6.501)
FT
0972444-0009
CASlE,2 COND 22 GA .170 00
0007
00002.000
EA
0972561-0002
TERMI~Al,SlOT
0008
00004.000
EA
0418201-0060
STRAP,MARKER,AOJUSTA3LE,PlASTIC
EA
0970672-9901
OMNI TEST PROGRAM FOR CABLE ASSY,MODEM
EA
0962571-0005
PLATE, 10, EOP CABLE
0002A
0003
COlO
0011
PI
REF
00001.000
Rev.
A-118
WHITE
TUNGUE _4 STUOITAPE MTGI
I
4
,. -tl
0
4
5
REviSIONS
SPECIFIED
[Q CABLE ~ LA MP SCREWS A" 0 RETAINER f-oZ_O_NE-+-LT:-"-t-:-I-::-:-..,...",._-:-=:---::_c::-""o=::=-"'_PT_,o:,,"'':'-'-:--:-:::-==-_I-I=-DA_T.:..E_+IA_PP_"..,:O__
V=-ED-j
CLIPS f -, SC.REW.5 INCLUDED W.TH
I A 14D"02'" (E, Z. E:''?~ B-\"2-1.5
1
1
QTEM
~ I. HEM ~' P .... N!I'"J :S:'?B4 \ -000\
@] REiAINER CLIP IN51'ALLED WITH
2. \IE.MB ? .... ((AS 4-iI3~4-0DOI
NO.
22 AWG ~L'"
22 ,,"WG REt)
:,;.sr.
~.~<"'
~~'~~'.~:; ~~ ~
22 A'I.::; I?V.: !\'.~ ~ I;;:;
to 22AWG- IP'JU:, ~ Tf ,;;\
7
!.:',lE5:UNlE:'S
iTE"1
I
2
-
2
3
22 Po'll" IPVC.\hTE. "R
PI-~
FL-I
PI-7
'(-I
PI-S'
PI-+
1-2
f?::'.~.f':
con
: [)ATA
P\2'V
PI-13
PI-\Z
PHI
Ell
R.K
A,
RlD
,\
~
~
i:)RN ",RE
J;:"', ;,;:(E
c.}l PI
PI-B iJVMCfR ~l PI
PI -2 IJUMPE~ ~ PI
!5
5
4-
E~
E~
P\-3
I
~_ 'l=--:'-=
0.
5
~E
. £2
OTHERWI5~
TI-IREAD£O HOLE: ON SAMii SlOE AS
III 5~~f~s 11~~ BE iH"EADED
FORMAL RE LEAS E
I
T
o
'
CCMPLETELY TI4RIJ RETI\INER CUPS.
~
~J
4. THIS {AfJLE ISTtJ 8£ C~I/.5T/?/JCTE~
B 406441Q(~, ~v:,,,,>,oX.<>_ 10-22-75
'iZI/7f' "1/ tT/,WITH (/./.. LlJT£/) I1AT£/?IALS
I-ADDED J) ITEM "
ONLY
L-.-r--r---~--~------,~--~-,,-~--IC '7
~409Bc.~f=:)J!£-_... 11-4-75
'\11-9- 7 ':' I,.(.ui'<-.j
{
I)AnDE~ NrE ~
z)Z.DN~ C-z..,ACDED FLAG NO\~ @].
!»ADD[D E')EZ.)E.~i E4 ON SPADE. LUGS,
4-
4-
-
JJ
EZ
c
£3
-~
E4
--+
c.o
8
-
B
U
I-B
Z.
MrtRK lIDO. 07
11t.
:LR Willi E 1'1PE. 9
---~I~~M~A~RK~~I~G~Q~·O~7~~~7~~~-=r~LR~B~L~A~CK~~T~~~P~E~~~_________ ~
SEO~I~DE~N~T_~I~F~.S~PE~C~~__.~0-1__________~A=DD~I~TI~O~NA~L~________~
.. 0
'ROCESS
CLASSIFICAT!ON
IIr--T--~-r--~------------------------~------------------------------~I--2 I ·1 I ~ I COOE
PART OR IIl£HTIFY'NG NUMBER
NCIOoIENCl..ATUOE OR OESCR'PTION
J "rfO(.URE"MENT
SPECIFICATI.JN
QTV REQO J
J IDENT
I
I
r
PARTS
UNLESS OTt-tERWtSE SPECFED
UNL.£SS
~SE
5P£CFlED
REMOVEALLBURRSA.--..DSHARP£0GE5I-____--+_ _-I_-l--I:~AAElNtNCHES
ANGL.ES. 13 Pl.ACE DECUALS • .010
• CONCENTRICITY MACHINED
DIAMETERS 010 FIR
• DIMENSIONAL LIMITS APPl.Y IIEFOAE
FINISH PROCESSING
A
:1~~A:~LE~·.~t~ING
INACCOROAHCE
1------+-----4--+-1
HOL£ TOL£AANC£
T~:f!~ T~!~ T~:= pe3~CO
. ,,,.,
DWNee~ 6-cs-7'~TE
C;;~~ C
V
7-24-7S
2 PLACE OCCIMALS • ~
·W&E~~~~~':~~E~F~I~y I------+---I---l--I
•
LIST
:,'~"':\
A~~
~ 1~·7;'
'J.."(".;k
H4-75
r.w
...;
lEXAS INSTRUMENTS
I-'CONPOHA"O
Eou.",.", Group
(JMw , • • •
CABLE ASSY. CURRtNI
LOOP
f
8732
Tr~ ~ ~ 1~: 8Jf 1~ ~ &If NEX~=~AT~:D ON
S
L /'vI
A
LIST OF MATERIALS
Assembly
Part No.
0983850-0001
CABLE ASSY. CURRENT LOOP 1/F
Item
No.
Quantity
Description
TI Part No.
Remarks
0001
00001.000
EA
0539903-0005
HOOD,CONN 15 PIN wiTH kETAINERS
0002
00001.000
E:A
0539409-0004
CONNECTOR,RCPT 15 PINS
00010.000
EA
0539430-0004
CONTACT,SnCKE:T 24-20AWG .068 INSUL OIA
PI
0002A
0003
0004
00000.500
FT
0538347-3999
wiRE HOOKUP B-22 AWG 19 STR
0005
00006.500
FT
0972444-0011
CASLE,4 eONO 22 GA .195 00
0008
00004.000
EA
0972561-0002
TE:R~INAL,SLOT
0009
00004.000
STRAP,MARKER,ADJUSTABLE,PLASTIC
0011
0012
Rev.
REF
00001.000
TONGUE *4 STUD(TAPE MTG)
EA
0418201-0060
EA
0910613-9901
CM~I
[A
0962511-0005
PLATE, 10, tOP CABLE
TEST
PRCGRA~
A-120
WHITE
FOR CABLE ASSY,CURRENT
I
4
V.,RE
I
c2,lAG
2-
1
J
0
PG:-to
PI-9
P2-1
RED
.l
l"~7D
PH~
~c-a
T
P':\-D
PI-Ie 0'2-3
PI-I
;>2-1
YEL
1
=::
AIi~
Sl("~-_~E
eLK (CFtS III.
ORN
4
'5
6
TOTAL
LENGTH
OE5CR~PTlON
1';0
I
,
~~o
CTR
BRN16FT5/N
3/N LDET'Pi2V
WI1lTE I
REMARII5
I--_~~_~
2
3
START :,Pj,5t1
5TA. S1A
NOTES. UNLESS OTHERWISE 5Pt.clf1E~
CABLE (LAMP SC!=\E.WS "'NO RETI\\NER
CLIPS AND -,t:.REW5 INGLUDED W,TH
.1El.!
NO
OJ
QTEM
DATE
A 40(;446 :E) lo':,o •• Y..~ Sou
0.
AQDED
~CABlE
CLAMP SC.REWS AND RETAINt.R
AND SCREWS INCLUDED WI1H~rrM -':"
3. RETAlr-.ER CLIP 1~5TALlEO WI1H n\~E"'DE.L
1-10LE. ON SAME SIDE AS SCReW HEAD_
~(ABLE C.lAlVIP DETAIL If'\ P2 SAME A~ PI.
151
SCREWS MUS" BE TIlREAOED C.OtJIPL8ElJ
~ THRU RE,AINER CLIPS.
~.
TJ.JIS CABLE: IS TO 8t. CONsnWCTEO
I) ITEM 10
1,_d ol 'S
•z q
1!>
C.HAN(;'ED NOTE '3. WAS"' ____ WITI-I LAI2-20
PHI PI-IO
_____-_'______~
rflR~ ~
'I-'/'~ f[}j.,v
..§.,JCIV'429-'77(-::) :/'~"'- (I)A{)O~O N-:JTE~
(2)AOOEO ITEV 7 3 ~TE
liZI
~~
8-1"-75
CABLE ASSV / 1l3A
A
IKTERFt...."£
HOLE TOl.ERANCE
T7~~::::t T~~~ Tf!U:~ 5183800
a7?2
~.. ~""~.~_____________________y~.__~~_~~_I_:.•~
__1_1_~~_~_:__~_?_~_1~_RU_I_:_~_f~_'~_~_T~_A_50_~_A_T_~ON_x_~_ON
__~____~~________________~________________~~~~-_AL~£_r~"_'~~~~I~~~
__E__
v___
~____~_>H_£~£T~~____~
5
3q
.f
LM
LIST OF MATERIALS
Part No.
Rev.
0983854·0001
G
Assembly
CABLE ASSY. (113A) INTERFACE
Item
No.
Quantity
00001. 000
EA
0002
00001.000
0003
000C7.000
0004
Remarks
DeSCription
TI Part No.
0539903-0005
HUOO,CONN 15 PIN WITH
EA
0539409-0004
CONNECTu~,RCPT
EA
0539430-0004
CONTACT,SOCKET 24-20AWG .068 INSUl OIA
00006.500
fT
0972444-0012
CABLI::,5CONU,22 AWG,300 WV,PVC INSULATED
0005
00001.000
EA
0539409-0005
CONNECTOR,PLUG
0006
00001. 000
EA
0539903-0001
HOCD,CONN 25 PIN wITH RETAINERS
0007
00005.000
EA
0418201-0060
STRAP,MARKER,AOJUSTABLE,PLASTIC
0008
00000.160
Ff
0538347-3999
wiRE HOOKUP B-22 AWG 19 STR
0009
00005.000
EA
0539430-0003
CO~TACT,PIN
EA
0970674-9901
OMNI TEST PROGRAM FOR CABLE
I:: A
0~62571-0005
PLATE, 10, EOP CABL!::
0001
0010
0011
REf
00001.000
A-122
PETAI~ER~
15 PINS
2~
PINS
WHITE
24-20AWG .068 INSUL DIA
ASSy,I~TFC
6
8
11L-M
i\;,)
B
f' \2\j/'r~
1'\
o
'6
14\1)
I",
t..4A'hG .t'\l, hll, ••
ccAWG IPVI NI.(v.'Rl
i'r;AWG 11-\'1. i"\'\llfti-~ £ ~ IT
2B
[2]
D )~
Of
\)H
ON :.'\1'111:. '~IbE AS SCREW \\t:.A\')
It'~-~l ( __ Av\>-' vi "fAIL ,\10 h:: AI\U r~ ~lJ\M
~~~~~~DW~~I \~ ~~~ ~uw:~is :~\~~~~
IN
",
10
2
~ ~~t,b~'1'~I'~ ~jk~:::~(~'::tl~~'~~~::~;ULE
HLV DAIA
1"1111 Dr-1A.
""lGNU
I'GNO
dS
d
3
o
N,JTE..'-, dNl\ r.::.. UTrlt.t?WI_t.. ...:.Pt. :,-I~k.u
':'Ab~E l \. AMI'
,_KL'{~ ..... \\'h.. r t.- TAlll~\-' \ \. \\ _
"'NO Sl~H\~ \1\, .... 1 V W Iii lfl'" \
(nE~~Lll
~ARDLT
Ie.
4
-
,hl'-ltl
7
5
~
I
ON LM!
ITEM
14
piN
0
I~l ~~\~~JWk'1 T~\'~':lFT\~ H,[j ~;;E:.i\Of:l ':0M~t E ' ( \ Y
Qj '>li..I;;V1Nb (ITEVt 13) FRLlM LONNELTDR PZ ,P3,
~~E ~~~XTI~~~S~ ~~~O 66~~ ~~: ~~~~MRU~I
CONNEC.TOR..
~ou~ING
c
c
B
B
o
A
LIST OF MATERIALS
Assembly
Part No.
CABLE ASSY. EIA/AUX MODEM
Item
No.
0983855-0001
Quantity
TI Part No.
Rev.
E
Description
Remarks
0001
00001.000
EA
0539903-0005
HOOO.CONN 15 PIN WITH RETAINERS
0002
00001.000
EA
0539409-0001t
CONNECTOR.RCPT 15 PINS
~O03
00002.000
EA
1l539903-0001
HOOO.CONN 25 PIN WITH RETAINERS
0004
00001.000
EA
0539409-0005
CONNE~TOR.PLUG
00001.000
EA
0539409-0006
CONNECTOR, RCPT 25 PINS
00116
JOOO1.000
EA
1l539430-0006
CONTACT,PIN
0001
OOO~1.000
EA
0418201-0001
REPLACED BY 418201-0060
0008
Q0091.UIJO
FT
\01538347-2999
WIRE HOOKUP 8-24 AWG 19 STR
WHITE
0009
00006.500
fT
0538347-3299
WIRE HOOKUP 8-22 AWG 19 STR
RD/WH
0010
00006.500
FT
0538347-3099
.. IRE HOOKUP 8-22 AWG 19 STR
BK/WH
0011
OOOl1.000
EA
'0539430-0004 CONTACT, SOCKET 24-20AWG .068 INSUL DIA
U012
00000.250
FT
0411t34-3eOC
5LEEVE,PVC,3/8 DIA. BLACK
0013
J0019.500
FT
0411634-2600
SLEEVE,PVC .263 OrA .020 WAll
0014
~HhJu2.000
EA
0972561-0002 TERMINAL,SLOTTED TONGUE NO.4 STUD
EA
11970075-9901
PI
0002A
0004A
0005
P2
0005A
0015
25 PINS
P3
REF
24-20AWG .068 INSUL OU
TEST PROGRAM.CABLE ASSV EIA AUX MODEM
A-124
USER'S RESPONSE SHEET
Manual Title: Model 743/745 Data Terminal Maintenance Manual 984025-9702
7_-1_-7
_ 8_ _ _ _ _ _ _ _ _ _ Date of this Letter: _ _ _ _ _ _ __
Date of Manual:_
User: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Office/Dept. No.: _ _ _ _ _ _ _ __
COmpany: ______________________________________
Street Address: _________________________________
City/State/Zip: _________________._ _ _ _ _ _ _ _ _ _ _ __
Please list any discrepancy found in this mafiua! by page, paragrapll, figure. or table number
in the following space. If there 3re any other suqgp,slions that you wish to make, feel free to
include them. Thank you.
Location
in Manual
I
I
I
I
I
I
I
I
I
I
•
Comment/Suggestion
NO POSTAGE NECESSARY IF MAILED IN U.S.A.
FOLD ON TWO LINES (LOCATED ON REVERSE SrDE), STAPLE AND MAll
FOLD
FIRST CLASS
Permit No 6189
Houston • Texas
BUSINESS REPLY MAIL
No postage
n~S5afY
If mailed in me United States
Postage will be paid by
TEXAS INSTRUMENTS INCORPORATEO
DIGITAL SYSTEMS DIVISION
P.O. BOX 1444
ATTENTION: TECHNICAL PUBLICATIONS
MIS 670
FOLD
HOUSTON, TEXAS 77001
Sales and Service Offices of Texas Instruments are located
throughout the United States and in major countries
overseas. Contact the Digital Systems Division, Texas
Instruments Incorporated, P.O. Box 1444, Houston,
Texas 77001, or call (713) 491-5115, for the location of
the office nearest to you.
4P
Texas Instruments reserves the right to chanle its product and service
offerings at any time without notice.
TEXAS INSTRUMENTS
INCORPORATED
Printed in U.S.A.
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No XMP Toolkit : Adobe XMP Core 4.2.1-c043 52.372728, 2009/01/18-15:56:37 Create Date : 2014:07:21 19:29:27-08:00 Modify Date : 2014:07:21 18:50:57-07:00 Metadata Date : 2014:07:21 18:50:57-07:00 Producer : Adobe Acrobat 9.55 Paper Capture Plug-in Format : application/pdf Document ID : uuid:41ebc65d-7c3b-f243-965e-ebeda6f3fcdf Instance ID : uuid:7ceb97d6-55ef-9a44-a09c-a5ea644742d7 Page Layout : SinglePage Page Mode : UseOutlines Page Count : 213EXIF Metadata provided by EXIF.tools