6294007J_CDC_40003 22_Information_Systems_Terminal_III_Hardware_Maint_Nov83 6294007J CDC 40003 22 Information Systems Terminal III Hardware Maint Nov83
6294007J_CDC_40003-22_Information_Systems_Terminal_III_Hardware_Maint_Nov83 6294007J_CDC_40003-22_Information_Systems_Terminal_III_Hardware_Maint_Nov83
User Manual: 6294007J_CDC_40003-22_Information_Systems_Terminal_III_Hardware_Maint_Nov83
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62940007
&J E:\ CONT~OL DATA
~ r:::J CORfO~TION
CDCQl) 40003-22/23
INFORMATION SYSTEMS TERMINAL IB
"
HARDWARE MAINTENANCE MANUAL
(SITE AND' SUPPORT INFORMATION)
Should difficulties be encountered in
installing, testing, or running this
equipment, you may obtain assistance by
contacting your CDC sales representative
for the telephone number applicable to
your installation. After obtaining the
number, write it here for future
reference:
TELEPHONE NUMBER______________________
62940007
c:\ CONTR..OL DATA
\!:I r::J CO~ORATION
f':j
CDC®INFORMATION SYSTEMS TERMINAL
HARDWARE MAINTENANCE MANUAL
(SITE AND SUPPORT INFORMATION)
m
1
1
1_ _ _ _ _ __
1
REVISION RECORD
-,-
1
1
DESCRIPTION
REVISION
-----------------r------------------------------------------------------------01
(07-24-80)
A
(12-02-80)
B
(01-23-81)
C
Preliminary edition.
Manual released. Includes ECOs 14228, 14277, 14284,
14306, 14326, 14346, and 14369. This edition obsoletes all previous editions.
Incorporates technical and editorial corrections and
ECO 14388, ECO 14444, and ECO/FCO 14422. This edition
obsoletes all previous editions.
Manual revised to incorporate ECOs 14513 and 14523.
(03-04-81)
D
(03-31-81)
E
(01-21-82)
F
(04-08-82)
G
(11-30-82)
H
Manual revised to incorporate ECOs 14519, 14532 and
14594.
Manual revised to incorporate ECOs 14889 and 14885.
Includes C/D models with standard 64K RAM and a
numeric cluster.
Incorporates 4 product name change,
change in description of rocket switch 7, clarification of communications loopback switch, and removal of
cable 61406110, ECO 14769 changing position of FCC
certification label. Change in table 1-2.
Manual revised to incorporate ECOs 14754, 14840,
14861, 14995, and 15018.
Manual revised to incorporate ECO 15331 and SB05394.
Makes technical additions/corrections.
Manual revised to incorporate ECOs 15634 and 15675.
(05-18-83)
J
Manual revised to incorporate ECO 15945.
(11-04-83)
Publication No.
62940007
Address comments concerning
this manual to:
REVISION LETTERS I, 0, Q AND X ARE NOT USED
©1980, 1981, 1982, 1983
Control Data Corporation
Publications a·nd Graphics Div.
2401 North Fairview Avenue
St. Paul, Minnesota 55113
by Control Data Corporation
Printed in the United States of America
or use Comment Sheet in
the back of this manual.
ii
MANUAL TO EQUIPMENT LEVEL CORRELATION SHEET
This manual reflects the equipment configurations listed below.
EXPLANATION: Locate the equipment type and series number, as shown on
the equipment FCO log, in the list below. Immediately to the right of
the series number is an FCO number. If that number and all of the
numbers underneath it match all of the numbers on the equipment FCO
log, then this manual accurately reflects the equipment.
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EQUIPMENT TYPE
SERIES
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CC629-A
01
02
03
03
04
05
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CC629-C
01
CC629-D
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WITH FCO'S
14284
14336
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XA243-A
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COMMENTS
Is/N 125
Is/N 162
IECO 14422
IECO 14402
IECO 14468
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CC629-B
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14284
14336
Is/N 125
Is/N 162
IECO 14422
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LIST OF EFFECTIVE PAGES
New features, as well as changes, deletions, and additions to information in this manual are indicated by bars in the margins or by a dot
near the page number if the entire page is affected. A bar by the
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ICononent Sheet
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62940007 J
PREFACE
This manual contains information for the on-site and support
maintenance of the CDC@ Information Systems Terminal III.
Equipment numbers correlation are as follows:
Equipment
Number
Description
CC629-A/C
60-Hz Model Terminal
XA244-A
.Touchpanel
CC629-B/D
50-Hz Model Terminal
XA244-A
Touchpanel
In addition, the following options may be added to the terminal:
Equipment
Number
Description
XA247-B
Internal Modem for PLATO
Network Communications
XA281-A
Read-Only Memory (ROM)
Expansion with Timeshare
Program
YA254-B
Modem Cable, Part No. 61409153
These options may be added to CC629-A/B and are standard on
CC629-C/D:
XA243-A
16K Random-Access
Memory (RAM) Expansion
YA266-A
Numeric Cluster
The information in this manual is divided into seven sections:
Section
Section
Section
Section
Section
Section
Section
62940'007 E
1
2
3
4
5
6
7
-
General Description
Operation
Installation and Checkout
Theory of Operation
Diagrams
Maintenance
Parts Data
vii
•
Manuals providing additional information on the terminal and
related devices include:
Title
I
Publication
Number
Information Systems Terminal III Operators Guide
62940006
PLATO User's Guide
97405900
Tutorial Access Service IST III Terminal
User's Guide
84001740
40003-208/209 Graphic Printers Operator's Guide/
Reference Manual
62949200
CL607-A/B Graphic Printer and XA262-A Printer
Interface Hardware Maintenance Manual
62949900
PLATO Flexible Disk Subsystem Hardware Maintenance
Manual
62949100
PLATO Flexible Disk Subsystem Operator's Guide
62940005
CN70l-A Acoustic Coupler Special Purpose Manual
62945100
Control Data 110 Microcomputer System User
Installation and Diagnostics Manual
62940024
All manuals may be ordered from:
Control Data Corporation
Literature and Distribution Services
308 North Dale Street
St. Paul, Minneso~a 55103
viii
62940007 E
CONTENTS
1.
GENERAL DESCRIPTION
•
1-1
Online Characteristics in PLATO Network • • • • •
Online Characteristics in Data Services Network
Major Assemblies • • • • • •
Display Monitor
Operator Panel
Touchpanel • •
Keyboard • • • •
•••
o.
•
Enclosure • • • o .
o. •
Controller Board • • • •
Video Board • • • • • • • • •
Optional Modem/DAA Board (PLATO Network Use Only).
Power Supply •
External Interfaces •
Phone/Line • • • • • • • • • • • • • • •
Video Out • • •
•••
1-2
Func t ions •
• •
• • • •
0
• • • • •
0
•
•
•
0
•
0..
0
0
•
•
0
•
••
•
0
0
•
0
•
•
•
•
•
•
•
0
0
0
0
• • • • • •
•
•
•
•
•
•
•
•
0
•
•
•
•
0
•
•
0
0
••
•
•
•
•
••
0
•
•
•
•
•
•
•
•
•
0
•
•
•
•
•
•
•
•
•
0
0
0
•
•
•
•
•
0
••
•
0
0
•
•
•
0
•
•
0
0
•
••••
•
0
•
0
•
0
•
0
•
•
•
•
•
Serial . . . . . .
•
• •
•
•••
0
•
•
•
•
•
. . . . . . . .
•
•
..
•
•
ASCII/PLATO Comm (Communications) • • •
Characteristics with an ASCII Network •
Characteristics with PLATO Network • • • • • •
Parallel • • • • • • • • •
• • •
Equipment Specifications • • • • • • • • • • • • • •
Physical Specifications • • • • o .
• ••
Electrical Specifications •• •
Environmental Specifications
•••••••••
I/O Cable, Grounding, and Tool Requirements
I/O Cables • • • • • •
Grounding • • • • •
0
0
0
0
Tool s
2.
•
0
•
•
•
•
•
•
•
0
•
•
•
•
•
•
•
•
••
•
•
0
•
0
0
0
•••
•
•
•
1-7
1-8
1-8
1-8
1-9
1-9
1-11
1-11
1-13
1-14
1-16
1-16
1-16
1-16
..... .
1-17
1-17
1-17
1-17
•
2-1
•
•
•
. . . . . • . . . . . . . .
•
1-3
1-4
1-4
1-4
1-5
1-5
1-6
1-6
1-6
•
•
OPERATION
External Controls and Indicators
• •
0
• •
• •
•
0
•
•
0
•
••
••
2-2
On/Off Circuit Breaker • • • • • • • • • •
Brightness Control • •
TALK/DATA Switch • • • • • • • • • • •
RESET Switch •
Selection Switches Behind Protective Door
Light-Emitting Diodes (LEDS)
Internal Controls and Indicators • • • • • •
Communications Loopback Switch • • • • • •
Refresh Memory Write Switch • •
Flood Screen Switch •
S2, S5, and ROM Selection Switches • • • •
Display Board Controls • • • • • •.•
Power-Supply Board Controls and Indicators
• • • •
2-2
2-2
Keyboard • • • • • • • •
0
0
•
•
•
•
0
62940007 B
• • •
•
•
•
0
•
0
•
0
•
•
0
•
,
0
0
•
•
•
•
•
•
0
•
0
•
0
•
•
•
.0
•
0
•
•
•
0
•
••••
•
•
•
• • • •
• • • •
0
•
•
•
•
•
•
•
•
•
•
0
•
0
•
•
•
•
0
•••
0
0
•
•
•
•
•
• • • •
2-2
2-3
2-4
2-8
2-8
2-10
2-10
2-10
2-11
2-14
2-14
ix
3.
INSTALLATION AND CHECKOUT
Crating . . . . . . . . . . . .
...
Uncrating • • • • • • •
• • • • • • •
Installation • • • • • • •
• • •
Preparing Terminal • • • • •
• • • • • • •
Installing Options •
• • • • • • •
Installing RAM Expansion Option • •
Installing ROM/EROM Expansion Option
• • •
Installing Internal Modem/DAA Option • • •
Installing Cabling • • • • • • • • • • • • • •
Communications Via External Modern • • •
Communications Via Internal Modern • • • • •
Communications Via Internal/External Modern
Communications Via Long-Line Rec~iver/Driver
Setting Internal Switches • ••
•••••••
..
Checkout
4.
•
•
•
•
•
•
•
•
•
•
•
•
.
•
•
.
•
.
•
•
•
•
THEORY OF OPERATION
Controller • • • • • • • • • • • • • •
Microprocessor •
•• • • • •
Read/Write Memory Transfers •
••• • • • •
Instruction Fetching • • • • • • • •
Instructed Reads and Writes
• • • •
Input/Output Functions • • • • • • • • • • • •
Input 0016 - Read Maintenance and Load
Switches . . . . . . . . . . . . . . .
Output 00 16 - Lo~d Maintenance Register
Input 01 16 - Read Keyboard Data
••••
Output 0116 - Load PLATO Transmitter Lower
Bi ts . . . . . . . . . . . . . . . . . . .
Input 02 1 6 - Read Touchpane1 Data • • • •
Output 0216 - Load PLATO Transmitter Upper
Bi ts . . . . . . . . . . . .
.. . . .
Input 0316 - Read Lower ID • • • • • • .
Output 0316 - Bulk Write/Erase and Video
Enable/Disable • • • • • • • • . • • • • •
Input 0416 - Read Upper ID • • • • • • • • •
Output 0416 - Load.lnterrupt Mask • • •
Input 05 1 6 - Read Internal Switches
Output 0516 - Miscellaneous Control
• •
Input 0616 - Read Communication Switches
and Status • • • • • • • • • • • • • •
Output 0616 - Load ASCII Communication
Data Rates • • • • • • • • • • • • • •
Input 07 1 6 _ Read Controller Status
Output 0716 - Load Serial I/O Data Rate • •
Input 0816 - Read PLATO Communication Data •
Input 1016 - Read ASCII Communication Data •
Output 1016 - Load ASCII Communication Data.
Input 1116 - Read ASCII Communication Status
x
3-1
3-1
3-3
3-3
3-3
3-4
3-6
3-7
3-11
3-11
3-13
3-14
3-16
3-16
3-21
4-2
4-3
4-4
4-4
4-4
4-5
4-6
4-6
4-7
4-8
4-8
4-8
4-9
4-9
4-10
4-10
4-11
4-12
4-13
4-14
4-16
4-17
4-18
4-18
4-19
4-19
62940007 E
...
Output 1116 - Load ASCII Communication
Control • • • • • • • • • • • •
Input 12 16 - Read Serial I/O Data
Output 1216 - Load Serial I/O Data • • • • •
Input 13 1 6 - Read Serial I/O Status
Output 1316 - Load Serial I/O Control • • •
Input 2Y/3Y16 - Input from Parallel Channel.
Output 2Y/3Y16 - Output to Parallel Channel.
PLATO Communication Circuits • • • • • • • • • • •
PLATO Receiver • • • • • • • • • • • • • • • •
Word Detection •
••••••
Word Assembly • • • • • • • • •
PLATO Transmitter • • • • • • • • •
••••
Word Transfer/Serialization • • • • • • • •
Word Formatting • • •
• • • • • • •
ASCII Communication Circuits • • • • • • • • • • •
ASCII Receiver • • • • •
•••••••••
ASCII Transmitter • • • • • •
•••••••
Serial Interface Circuits • • • • • • •
•••
Parallel Interface Circuits
• • • • • • •
Interface Signals • • • • • • • • • • • • • • •
Timing . . . . . .
.. . . . . . . . . . .
Output Exchange • • • • •
••
•••
Input Exchange
••••
•••••••
Video Board .
.
.
..
.........
.
.
.
.
•
Memory Structure • • • • • • • • • • • • • • • • •
Program Memory • ••
•••••••••••
Display-Refresh Memory • • •
•••••••
Display Refresh • • • • • • • • • • • • • • • • •
Refresh-Memory/Display Relationship • • • •
Display-Refresh Timing • • • • • • • •
••
Optional Modem/DAA Board (PLATO Network Use Only)
Operator Panel • • • • • • • •
•••••••••
Touchpanel
••
••••••
•••••
Keyboard • • •
••••
••• • • • • • • • •
Numeric Cluster
••••••••••
•••
Display Monitor • • •
• •••••••••••••
Power Supply Board •• • • • • • • • • • • • • •
5.
I
DIAGRAMS
Logic Diagram Set Contents Sheet • • • • • • • •
Schematic Diagram, lAGD (ASCII 1st Power Supply)
6.
4-19
4-19
4-19
4-20
4-20
4-20
4-20
4-20
4-20
4-21
4-21
4-22
4-22
4-23
4-23
4-24
4-25
4-25
4-26
4-26
4-27
4-27
4-30
4-31
4-31
4-32
4-32
4-32
4-32
4-34
4-35
4-36
4-36
4-37
4-38
4-39
4-39
5-2
5-65
MAINTENANCE
Suggested Emergency Maintenance Procedure • • • • • •
Before Leaving for Customer Site
•••
Upon Arriving at Customer Site
••••••••
Maintenance Aids • • • • • • • • • • • • • • • • • •
Resident Diagnostics • • • • • •
•••••••
RAM Tests • • • • • • • • • • • •
Interface Tests • • • • • • • • •
PLATO Communications Test
· . . . . .. ..
·· .. .. . .
62940007 F
6-1
6-1
6-2
6-3
6-3
6-3
6-4
6-4
xi
I
ASCII Communications and SERIAL-Interface
Communications Tests • • • • • • • • • • •
CRT Alignment, Touchpanel, and Keyboard Tests.
PLATO System Diagnostic (DIAG) • • • • • • • • • •
Preventive Maintenance • • • • • •
•••••• •
Special Tools and Test Equipment • • • • • • • • • •
MOS Circuit Handling Precautions • • • • • • • •
Diagnostic and Corrective Maintenance Procedures
SAM Format • • • • •
•••••••
Use of SAMs • • • • • • • • • • • • • • • • • • •
Organization of SAMs and Procedures • • • • •
Procedure 1 - Turning Terminal On/Off • • •
Procedure 2 - Executing Resident Diagnostics
Procedure 3 - Removing Hood and Bezel • • • • •
Procedure 4 - Adjusting Video • • • • • • • • •
Procedure 5 - Adjustment Yoke Centering Rings •
Procedure 6 - Replacing Video • • • • • • •
Procedure 7 - Replacing Controller Board • • •
Procedure 8 - Replacing Integrated-Circuit
Ch ips . . . . . . . . . . . . . . . . . . . .
Procedure 9 - Checking and Adjusting Power
Supply Voltages • • • • • • • • • • • • •
Procedure 10 - Replacing Power Supply Board • •
Procedure 11 - Replacing Line Filter, Power-Cord
Receptacle, and Stepdown Transformer • • • •
Procedure 12 - Replacing ON/OFF Circuit
Breaker • • • • • • • • • • • •
Procedure 13 - Replacing Keyboard Assembly and
Components • • • • • • • • • • • • • • • • •
Procedure 14 - Replacing Operator Panel • • • •
Procedure 15 - Replacing Operator Panel LEDs
Procedure 16 - Replacing BRIGHTNESS Control • •
Procedure 17 - Replacing Protective Door • • •
Procedure 18 - Replacing Matched Yoke/CRT or
Display Board • • • • ',. • • • • • • • • • •
Procedure 19 - Replacing Voltage Doubler/
Bleeder Assembly • • • • • • • • • • • •
Procedure 20 - Replacing Touchpanel • • • •
Procedure 21 - Replacing Internal Modem Board •
Procedure 22 - Defining Acceptable Display
Quality . . . . . . . . . . . . . . . . . . .
Procedure 23 - Installing Numeric Cluster •
..
.......
7.
6-54
6-58
6-61
6-63
6-66
6-67
6-70
6-71
6-72
6-73
6-73
6-76
6-76
6-79
6-79
6-80
PARTS DATA
Genealogy IST-III 50 & 60 Hz
• • • • • • • • • • • •
Genealogy CDllO IST III 50 & 60 Hz • • • • •
••
Spare Parts List ASCII IST-II Basic Terminal • • • •
Spare Parts List Touch Panel Option • • • • • • •
Spare Parts List PLATO Communication Network Modem
Spare Parts List Memory Expansion Option • • • • • •
Spare Parts List Timeshare ROM Option • • • • • • • •
Spare Parts List Numeric Cluster Option •
• • • •
xii
6-4
6-5
6-5
6-6
6-7
6-7
6-8
6-8
6-9
6-10
6-37
6-37
6-42
6-45
6-49
6-50
6-52
7-3
7-4
7-4.1
7-6
7-7
7-8
7-9
7--10
62940007 E
Keycap Set, Numer ic Cl uster • • • • • • • • • • • • •
ASCII Terminal 60 Hz TLA • • • • • • • • • • • • • •
ASCII Terminal 50 Hz TLA • • • • • • • • • • • • • •
Panel & Gasket Assembly • • • • • • • • • • • • • • •
CDllO ASCII Terminal 60 Hz TLA • • • • • • • • • • •
CDllO ASCII Terminal 50 Hz TLA • • • • • • • • • • •
A. C. Entry Assy • • • • • • • • • • • • • • • • • • •
P.C. Card Assembly, OADD Operator Panel (2nd
Generation) • • • • • • •
Card Assembly OABD Video Cont Module W/Firmware
P.C. Card Assembly OABD, Video Controller • • • • • •
PoCo Card Assembly OABD, Video Controller W/Firmware
P.C. Card Asembly, OACD Controller Module • •
P.C. Card Assembly, 8CHD (Modern 150/1200 BPS) •
P.C. Card Assembly, OAGD Modern Line Filter • • •
P.C. Card Asembly, 9CAD ASCII 1ST Power Supply •
P.C. Card Assembly, lAGD ASCII 1st Power Supply • •
Cable Assy Data Set • • • •
Cable, Display Logic • • • • •
Cable Assy-Power Conn
Cable Assy-DC Power •
Cable Assy-Logic Signals
Cable Assy-Video Output • • • • • •
Cable Assy-AC Input
Cable Assy-AC Entry, 60 Hz • •
• • • • • •
Cab2e Assy-AC Entry, 50 Hz
0
•
0
0
0
•
•
0
0
0
0
•
•
0
0
•
•
0
•
•
0
••
0
•
0
•
•
•
0
0
0
0
0
•
0
•
•
0
•
•
•
•
•
0
0
•
0
0
0
0
•
0
0
•
•
•
•
0
•
0
•
•
0
•
0
0
•
0
•
0
•
•
0
•
•
•
•
0
•
0
•
•
0
•
•
•
0
0
0
•
•
0
•
•
•
0
•
0
•
'.
0
•
0
•
0
0
•
•
•
•
•
0
•
•
•
•
•
•
0
•
•
•
0
0..... . 0 . . . . .
0
•
•
7-10.1
7-10.2
7-16
7-22
7-22.2
7-22.7
7-24
7-26
7-28
7-30
7-32.2
7-34
7-40
7-44
7-46
7-48.2
7-50.2
7-52.2
7-54
7-56
7-58
7-60
7-62
7-64
7-66
FIGURES
1.
GENERAL DESCRIPTION
1-1
1-2
1-3
1-4
1-5
1-6
1-7
2.
·
0
· ··.
····.··.· ····
0
0
0
0
.
0
0
0
1-2
1-3
1-5
1-8
1-10
1-13
1-14
OPERATION
2-1
2-2
2-3
2-4
2-5
3.
·
Terminal Configured in PLATO Network
• • •
Terminal Configured in Data Services Network •
Terminal
• • • •
• •
•
• • •
•
External Interface Connectors • •
• • • • • •
Serial Word Format
•
Receive Word Format in PLATO Network
• • • •
Transmit Word Format in PLATO Network • • •
· ·
External Controls and Indicators
•
Selection Switches Behind Protective Door • • •
Internal Controls and Indicators
• • •
•
Decal-Inside Hood • • •
•
•
•
• •
Power-Supply Board Controls and Indicators
•
,0
0
.
·
0
0
0
0
0
·
0
0
0
0
·
2-1
2--5
2-9
2-11
2-14
INSTALLATION AND CHECKOUT
3-1
3-2
62940007 F
Terminal Packaging • •
Video Board Locations for RAM Expansion • • •
0
•
•
0
0
0
•
0
0
•
••
0
3-2
3~5
xiii
I
I
I
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
3-11
4.
Equipment Identification Label and FCO Log
Placement for Memory Expansion Options • • •
Video Board Locations for ROM/EROMExpansion •
Internal Modem/DAA Installation • • • • • • • •
Modem Shield and Board Installation • • • • • •
Communications Via External Modem • • • • • • •
Communications Via Internal Modem • • • • • • •
Communications Via Internal/External-Modem
Combination (2.sheets) • • • • • • • • • • •
Communications Via Long-Line Receiver/Driver •
Communications Loopback Switch • • • • • • • •
Terminal Block Diagram • • • • • • • •
• •
Data Bus Word for Input 0216 • • • • • • • • •
Significance of S5 Switches • • • • • • • •
PLATO Receive Word Format • • • • • • • • • • •
Receive PLATO Word Transfer • • • • • • • • • •
Transmit PLATO Word Transfer • • • • • • • • •
PLATO Transmit Word Format • • • • • • • • • •
ASCII Receiver Word Format • • • • • • • • • •
ASCII Transmitter Word Format • • • • • • • • •
External Input/Output Timing (No Extra Wait
States) • • • • • • • • • • • • • • • • •
4-10 External Input/Output Timing with Delayed
Device Ready (Extra Wait States)
••••••
4-11 External Input/Output Timing with Device Not
Ready (Timeout) • • .. • • • • • • • • • • • •
4-12 Memory Structure and Address Assignments • • •
4-13 Refresh-Memory/Display Relationship • • • • • •
4-14 Scan Line Timing (Composite Video Signal) • • •
4-15 Frame Timing (Composite Video Signal) • • • • •
4-16 Keyboard Codes and Legends • • • • • • • • • •
4-16.1 Keyboard with Numeric Cluster • • • •
••
4-1
4-8
4-11
4-21
4-22
4-23
4-23
4-24
4-25
4-28
4-29
4-30
4-31
4-33
4-34
4-35
4-37
4-38
MAINTENANCE
6-1
6-2
·
Example ofa SAM • • • • • • • •
• • • • • •
Organization of SAMs and Corrective Maintenance
Procedures • • •
• •
• •
• • • •
Keyboard Codes and Legends •
• • •
• • • •
RAM Chip Location •
• •
• • •
Hood Removal
• • •
• • • o·
• • • • • •
Bottom of Terminal • •
• • • •
• •
Bracket Screws Removal • • • •
• •
Display Board • • • •
• • • •
• • • •
•
CRT Centering Rings • •
• •
•
• • •
Video and Controller Board Locations •
• • •
Video Board • •
•
• • • • • • • • • •
• •
Controller Board •
• • •
•
•
Pluggable Chips on Controller Board
• • • •
Pluggable Chips on Video Board •
• •
• • •
0
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
xi~
3-14
3-17
3-20
THEORY OF OPERATION
4-1
4-2
4-2.1
4-3
4-4
4-5
4-6
4-7
4-8
4-9
6.
3-5
3-7
3 .... 8
3-10
3-12 .
3-13
0
0
0
0
0
0
·
0
0
···
0
0
0
0
0
0
0
0
-0
.•
·
·
0
0
··· ·····
··
· ·· ·
· ··
·
·
0
0
0
0
6-9
6-10
6-39
6-42
6-43
6-43
6-44
6-48
6-49
6-51
6-52
6-54
6-56
6-57
62~40007
E
6-15
6-16
6-17
6-18
6-19
6-20
6-21
6-22
6-23
6-24
6-25
6-26
6-27
6-28
6-29
6-30
6-31
6-32
6-33
6-34
····
· · · · · ·· ·· ··
·
············
·· · ·· ·· ·· · · ·· ·· ··
······
···
·
·
· · ··
·
·
·
·
·
·
·
.·········· ·
·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ··
... . ···········
·
· ·· ··· ··· ··· ··· ·· · ··· ··· ···
··········
Pluggable Chip on Monitor Display Board
Test Points for +5 V and -12 V Controller Board
Power Supply Board Adjustments
•
Test Points for +55 V on Display Board
Test Points for -5 V and +12 V on Video Board
Monitor Chassis Removal
Power Supply Board Removal
• •
AC Entry Panel Removal
•
Stepdown Transformer Removal (Applicable Only
to International Units)
ON/OFF Circuit Breaker Replacement •
•
Keyboard Assembly Removal
Keyswitch Replacement
•
Operator Panel Removal •
LEOs on Operator Panel •
CRT Removal
•
Front Chassis View
•
Touchpanel Removal
Touchpanel Alignment Marks
•
Orthogonality and Linearity of Alignment Pattern
Numeric Cluster on Keyboard
6-57
6-58
6-59
6-60
6-61
6-62
6-63
6-64
6-66
6-67
6-68
6-69
6-70
6-71
6-74
6-75
6-77
6-78
6-80
6-81
TABLES
1.
GENERAL DESCRIPTION
1-1
1-2
1-3
1-4
2.
Function of Switches Behind Door • • • • • • •
Load Switch Selections • • • • • • • • • • • •
Meaning of LEOs During Normal Operation • • • •
Function of Internal Selection Switches • • • •
Interface Signals Affected by Switch S2-7 • • •
2-5
2-7
2-8
2-12
2-13
INSTALLATION AND CHECKOUT
3-1
3-2
4.
1-10
1-12
1-15
1-17
OPERATION
2-1
2-2
2-3
2-4
2-5
3.
Serial Connector Pin Assignments • • • • •
ASCII/PLATO Corom Connector Pin Assignments
Parallel Connector Pin Assignments • • • • • •
Terminal I/O Cables • • • • • • • • • • • •
Setting S2 and S5 Selection Switches
Setting Selection Switches Behind Door
3-18
3-22
THEORY OF OPERATION
4-1
4-2
6~940007 E
Input/Output Functions • • •
Data Bus Word for Input 0016
·· .. .. . . . .
4-5
4-6
xv
I
Data Bus Word for Output 0016 • • • • • •
Bulk Write/Erase and Video Enable/Disable
Function • • • "" • • • • • • • • • • •
Masked Interrupt Conditions •
4-5
• • • • •
4-6 . Data Bus Word for Output 05 16 •
• •
•
4-7
Data Bus Word for Input 06 16 • • • • • •
ASCII Receive Data Rate Selection
4-8
• • •
ASCII Transmit Data Rate Selection • • •
4-9
4-10 Data Bus Word for Input 07 16 • • • • • •
4-11 Serial Interface Data Rate Selection •
4-3
4-4
• • •
4-7
• • •
• • •
• • •
• • •
• • •
• •
• • •
•
4-9
4-10
4-12
4-14
4-15
4-16
4-17
4-18
Second Indications for Errors 03, 04, and 05 •
Video Adjustment Controls • • • • • • • • • • •
6-40
6-46
··
·
·
6.
MAINTENANCE
6-1
6-2
7.
PARTS DATA
7-1
xvi
·
· ··
Explanation of Column Headings of ComputerGenerated Assembly Parts Lists • • • • • • •
7-1
62940007 E
GENERAL DESCRIPTION
I
This section describes the functions, major assemblies, external
interfaces, and equipment specifications of the terminal, as
,,,,ell as its I/O cable, grounding, and tool requirements.
FUNCTIONS
The terminal is a controlware-driven, graphic/alphanumeric display device that can operate in either the CDC@ Data Services
Network or the CDC@ PLATO Education Network.* In addition,
timeshare-mode controlware available from the Data Services
network gives the terminal the capability to operate in other
networks that use ASCII coded communications.** This can also
be accomplished without accessing the Data Services network if
the terminal is configured with a local controlware source (a
flexible disk drive or additional ROM/EROM containing resident
controlware).
Controlware instructions establish all functional characteristics of the terminal. The terminal automatically loads these
instructions following a power on. This occurs after the load
source has been selected, and if applicable, after network
communications has been established. Depending on the setting
of switches on the terminal, the load source may either be
selected automatically or be selected manually through keyboard
or touchpanel entries. The possible load sources are:
•
PLATO host computer - downline loads PLATO network
controlware.
•
Data Services host computer - downline loads an ASCII
version of PLATO controlware, controlware for graphics
mode, and controlware for timeshare mode.
•
Flexible disk - loads directly from an associated
flexible disk drive.***
•
Internal ROM/EROM - loads from optional ROM/EROM within
the terminal.
*PLATO is an acronym for Programmed Logic for Automated
Teaching Operations.
**ASCII is an abbreviation of American Standard Code for Information Interchange, which is the type of coding used by the
Data Services network.
***Loading from flexible disk requires 16K of additional RAM in
CC629-A/B.
62940007 E
1-1
The following paragraphs describe the basic online characteristics of the terminal as it operates in the PLATO or Data
Services network.
ONLINE CHARACTERISTICS IN PLATO NETWORK
When online with the PLATO network (figure 1-1), the terminal
functions as a standard PLATO terminal with the following
characteristics:
•
Sends keyboard and touchpanel input to the host computer
for interpretation before data returns for display
•
Displays data from the host computer in page fashion
•
Uses a screen format of 32 lines by 64 characters per line
•
Upon operator request, transfers screen contents to an
associated graphics printer for copying or sends data to
or inputs data from an associated flexible disk drive.
PLATO HOST
COMPUTER
1
PLATO
SITE
CONTROLLER
I
i-r--
l-r--
FLEXIBLE
DISK
DRIVE
I
*
GRAPHIC
PRINTER*
TERMINAL
OPTIONAL INTERNAL MODEM
ASCII/PLATO
COMMUNICATIONS
INTERFACE
PARALLEL
INTERFACE
SERIAL
INTERFACE
FOR FUTURE SUPPORTED ~
SERIAL-COMMUNICATION
DEVICE
03916-1
* AVAILABLE PERIPHERALS SUPPORTED IN APPLICATION
Figure 1-1.
1-2
Terminal Configured in PLATO Network
62940007 B
ONLINE CHARACTERISTICS IN DATA SERVICES NETWORK
When online with the Data Services network (figure 1-2), the
terminal can operate in any of the following modes:
•
PLATO mode - functionally the same as if online with the
PLATO network
•
Timeshare mode - simulates the operation of Teletype
equipment. Once the controlware is loaded, the terminal
can be put online with a different ASCII network that has
compatible operation. Basic characteristics are:
Switch selection determines if keyboard input is displayed when returned by the host computer or displayed
simultaneously as it is transmitted (the latter is
applicable when mode is run on Data Services network)
Switch selection determines whether parity generation/
checking is even, odd, or none (even parity is applicable when mode is run on Data Services network)
Alphanumeric data appears in scroll fashion in a
34-line by 85-character-per-line format
An associated graphics printer can print the data
received by the terminal or copy screen contents
Touchpane1 entries and use of a flexible disk drive
are not supported
TERMINAL
ASCII/PLATO
COMMUNICATIONS
INTERFACE
DATA
SERVICES
NETWORK
FLEXIBLE
DISK *
DRIVE
PARALLEL
INTERFACE
SERIAL
GRAPHIC
INTERFACE
FOR FUTURE SUPPORTED
SERIAL-COMMUNICATION
DEVICE
*ONLY SUPPORTED IN PLATO MODE
Figure 1-2.
62940007 B
**SUPPORTED IN ALL MODES
03916
Terminal Configured in Data Services Network
1-3
•
Graphics mode - simulates the composite operation of
Tektronix 4010 and 4014 Graphic Terminals. Basic
characteristics are:
Graphics are composed using the touchpanel for course
positioning and the keyboard for fine positioning
Supports a graphics printer and has the switchselectable features described for timeshare mode
Alphanumeric data appears in page fashion in a 34-line
by 85-character-per-line format
MAJOR ASSEMBLIES
The following paragraphs describe the major assemblies of the
terminal (figure 1-3). This includes the display monitor,
operator panel, touchpanel, keyboard, enclosure, controller
board, video board, optional modem/DAA board (PLATO network use
only), and the power supply.
DISPLAY MONITOR
The display monitor is a noncomposite video unit that receives
vertical and horizontal sync pulses to deflect an electron beam
in the cathode-ray tube (crt). The video signal received is
used to unblank (illuminate) the crt at proper times to present
data on the screen. The unit consists of a circuit board, yoke,
flyback transformer, high-voltage rectifier, and a crt.
The active display area consists of a 512 by 512 matrix that is
refreshed in an non interlaced mode. These 262,144 matrix elements are individually programmable (illuminated or black). The
active display area is approximately 216 mm by 216 mm (8.5 in by
8.5 in).
OPERATOR PANEL
This panel, located to the right of the screen, contains all the
external indicators and controls, except the ON/OFF circuit
breaker. These indicators and controls are described in Operation, section 2.
1-4
62940007 B
Figure 1-3.
Terminal
TOUCHPANEL
The touchpane1 forms a 16 by 16 matrix of 13 mm by 13 mm (0.5 in
by 0.5 in) square touch-sensitive areas, overlaid on the display
screen. In modes supporting touchpane1 input, pressure applied
to the touchpane1 surface interrupts an X/Y scanning mechanism.
When a touch is detected, the terminal captures the intersecting
X/Y coordinates for processing and produces an audible tone.
KEYBOARD
The terminal keyboard provides for operator entry of data and
control codes. When a key is pressed, an a-bit code is
generated at the controller board of the terminal. In most
cases, the input goes to the central computer for interpretation
before data returns to the terminal for display.
62940007
1-5
ENCLOSURE
The terminal is housed in a four-part enclosure that consists of
a base, hood, bezel/keyboard cover, and display/touchpanel mask.
All components, except the touchpanel, BRIGHTNESS control, and
operator panel, fasten to the base. The removable hood gives
access to all the modules of the terminal, except the keyboard,
touchpanel, and operator panel.
CONTROLLER BOARD
The controller board performs the control functions and processing required in input/output operations. Input/output operations include communications with the connected network,
communications with attached peripherals, touchpanel and keyboard entries, and read/write transfers with memory on the video
board. Examples of control functions are:
•
•
•
•
Instruction decoding and execution
Communications formatting
Interrupt recognition and processing
Timing generation for' serial/parallel-communication
interfaces
VIDEO BOARD
The video board provides timing and memory to support the controller board and the display monitor. Features include:
•
•
•
•
32K a-bit words of RAM for display refresh
16K a-bit words of RAM for loading controlware programs
for CC629-A/B
Provision for 16K more RAM for additional loading storage
for CC629-A/B*
32K a-bit words of RAM for loading controlware programs
for CC629-C/D.
*Supporting circuitry for memory expansion is already on the
board, including sockets where the memory chips are inserted.
1-6
62940007 E
•
4K 8-bit words of ROM/EROM that contains a resident
diagnostic and loader firmware program
•
Provision for up to 16K more ROM/EROM (in 4K increments)
for additional resident programs*
•
Timing generation for the display, memory, and the controller· board
•
Composite video output for external devices
OPTIONAL MODEM/DAA BOARD (PLATO NETWORK USE ONLY)
The optional modem/DAA (data-access arrangement) board is a FSK
(frequency-shift-keyed), asynchronous internal modem for
communicating with a PLATO site controller via a dial-up
telephone line. Features include:
•
Switch controlled connection with telephone line to
facilitate use of a telephone plugged into the PHONE jack
at back of terminal
•
Full-duplex operation using frequency multiplexing on a
two-wire, unconditioned telephone line
•
Primary (receive) channel l300-Hz mark, 2l00-Hz space
•
Secondary (transmit) channel 390-Hz mark, 490-Hz space
•
Receive data rate up to 1200 bps
•
Transmit data rate up to 150 bps
•
Line impedance of 600 ohms
•
Transmitter output level of -9 dBm (+0, -4 dBm)
•
Receiver input level of -10 dBm to -43 dBm
*Supporting circuitry for memory expansion is already on the
board, including sockets where the memory chips are inserted.
62940007 B
1-7
POWER SUPPLY
The power supply operates with l20-V ac, SO/60-Hz input, which
meets domestic requirements.
In international units, a stepdown
transformer is included to allow use of the same power supply.
Regulated output voltages are:
•
+55 volts
•
+12 volts
•
-12 volts
•
+5 volts
•
-5 volts
EXTERNAL INTERFACES
The following paragraphs describe the external interfaces of the
terminal. The interface connectors (figure 1-4) are on the
lower-rear panel of the terminal and are labeled PHONE, LINE,
VIDEO OUT, SERIAL, ASCII/PLATO COMM, and PARALLEL. The PHONE
and LINE telephone jacks are only on units that have the internal modem/DAA board installed.
PHONE
TELE~HONrCK
ASCII/PLATO
COMM
C~~R
~
LINE --(-
TELEPHONE
JACK
PARALLEL
SERIAL
COi~R iECT~R
b
(~
]p <.\~
1P
Q
-/-~'----\
VIDEO OUT
CONNECTOR
03331-7
Figure 1-4.
External Interface Connectors
PHONE/LINE
These telephone jacks connect to the site telephone equipment
when terminal communications are with the PLATO network through
the internal modem. The connection of the telephone line to the
1-8
62940007 B
LINE jack can either be direct via the telephone wall jack or
indirect via a CDC CN701-A Acoustic Coupler. When the
connection is direct, the site telephone is plugged into the
PHONE jack.
Use of the plugged-in telephone is enabled through the TALK/DATA
switch on the terminal. The switch internally disconnects the
telephone line from the modem and connects the line with the
telephone. This also occurs automatically when the terminal is
powered off.
VIDEO OUT
The VIDEO OUT connector provides a composite video signal of the
contents of the screen that meets the RS-170 standard.* This
output can either drive a video hardcopy unit or a special
monitor. Maximum length of the coaxial cable used in the
connection is 150 m (500 ft).**
SERIAL
This connector allows the terminal to interface with a seria1communication device.
Characteristics are:
•
Asynchronous, full-duplex operation with voltage signals
that meet RS-232-C/CCITT V.24 and V.28 standards***:
Receiver levels of -25.0 V to +0.8 V equals mark or
+2.0 V to +25.0 V equals space or on
off~
Transmitter levels of -12.0 V to -3.0 V equals mark or
+3.0 V to +12.0 V equals space or on
off~
•
Controlware-selectable word length, parity, and stop bits
(figure 1-5 shows word format)
•
Controlware-selectable receive/transmit rates of 37.5,
75, 150, 300, 600, 1200, 2400, 4800, 9600, or 19 200 bps
*RS-170 is the Electronic Industries Association standard for
electrical performance of monQchrome television studio
facilities.
**Maximum length is dependent on cable characteristics, signal
termination, and receiver design.
***RS-232-C is the Electronic Industries Association standard for
signal interchange between data terminal equipment and data
communication equipment. CCITT V.24 and V.28 are comparable
European standards.
62940007 B
1-9
~~~~1_J@1
o·
L
®
________
I®I r---@
-''-.---1''''--_..
-','
- - - -
sp
MARK
,
... . . - - - - . CHARACTER-----4IIf--
START BIT (SPACE OR HIGH)
@
@
@
5,6,7, ORe DATA BITS (J:MARK OR LOW, 0= SPACE OR HIGH)
lOR NO PARtTY BIT (EVEN OR 000)
I, 1.5, OR 2 STOP BITS (MARK OR LOW)
Figure 1-5.
03:542
Serial Word Format
Maximum length of the cable used in the serial interface is 15 m
(50 ft). Table 1-1 gives the pin assignments.
TABLE 1-1.
PIN NUMBER*
SERIAL CONNECTOR PIN ASSIGNMENTS
SIGNAL
RJ3-1
Safety Ground
RJ3-2
Transmit Data
RJ3-3
Receive Data
RJ3-4
Request to Send
RJ-J-S
Clear to Send
RJ3-6
Data Set Ready
RJ3-7
Signal Ground
RJ3-8
Carrier Detect
RJ3-20
Data Terminal Ready
*Connector has 25 pins and unlisted pins
are not used (open).
1-10
62940007
ASCII/PLATO COMM (COMMUNICATIONS)
When the internal modem is not used, this interface conducts the
network communications for the terminal. This can be either
with an ASCII communications network such as the Data Services
network or with the PLATO network. Communications compatibility
with site facilities and either type network is established
through switch settings on the terminal. Communication
facilities accommodated are:
•
RS-232-C/CCITT V.24 and V.28 compatible signals for
interfacing with an external modem. The cable connecting
the modem can be up to 15 m (50 ft) long.
•
Current-based signals for interfacing with communications
equipment that use long-line communications. This signal
interchange occurs through an optically-coupled receiver
and a transmitter that has an output level of 24 rnA
minimum to 55 rnA maximum.
For data rates not exceeding
1200 bps, the cable for the connection can be up to
3048 m (10 000 ft) long.
Table 1-2 lists the pin assignments and the following paragraphs
describe the characteristics of the interface with each type of
network.
Characteristics with an ASCII Network
With an ASCII network, the characteristics of the ASCII/PLATO
COMM interface are:
•
Asynchronous, full-duplex operation
•
Switch-selectable receive/transmit rates that are in
effect except when reselected by controlware. Selection
includes rates of 75/75, 150/150, 300/300, 600/600,
1200/75, 1200/1200, or 2400/2400 bps.
In addition,
switches can be set so rates are determined by external
receive/transmit clocks.
•
Controlware-selectable receive rate and transmit rate
with separate selections of 75, 150, 300, 600, 1200,
2400, 4800, 9600, or 19 200 bps.
In addition,
controlware can select rates provided by external
receive/transmit clocks.
•
Automatic formatting of communications as follows, except
when reselected by controlware:
One start bit
Seven data bits that are ASCII encoded
One parity bit
One stop bit
62940007 B
1-11
TABLE 1-2.
•
I-'
I
I-'
N
COMM CONNECTOR
PIN
NUMBER
I
SIGNAL
ASCII/PLATO COMM CONNECTOR SIGNALS AND PINS
SIGNAL DIRECTION MINIMUM
VOLTAGE
IN RELATION
LEVEL
TO TERMINAL
-
MINIMUM
INTERNATIONAL
RS-232 INTERFACE
EXTERNAL MODEM EXTERNAL
PRIMARY CHANNEL SEC. CHANNEL
FOR PLATO
ASCII MODEM
RJ1-1
Protecti ve GND
-
X
RJ1-2
Transmit Data
(Primary)
OUtput
-6 -) +6
X
RJ1-3
Receive Data
Input
-4 -) +4
X
RJ1-4
Request to Send Output
(Primary)
Input
Clear to Send
(Primary)
RJ1-5
RJ1-6
Data Set Ready
Input
RJ1-7
Signal Ground
Common except
21-24
RJ1-8
Carrier Detect
(Primary)
Input
RJ1-9
Not Used
+6
+4
+4
+4
:J
X
X
X
X
X
X
LONG
LINE
FRONT PANEL
INDICATIONS
X
XMT
X
RCV
X
RTS
X
X_
X-
X
X
X
X
X
X
X_
X_
X
X
DSR
Input
+4
X+-
X
t:rl
7
OUtput
-6 -) +6
X
X
06
-4 -> +4
1
XMT"
1, 3,
&
3 and 4
0*
RJ1-16 Not Used
C
C
-....J
4
1 and 2
OPen
Open
RJ1-15 Serial Transmit Input
Clock
0'1
N
\C
tl=>C
4
OPen
Open
RJ1-11 Not Used
OPen
Input
-4 -> +4
4
0*
Open
RTS P
RJ1-19 Request to Send output
(Secondary)
Output
Data
Terminal
RJ1-20
Ready
+6
OUtput
+2
X
6
output
RJ1-22 Long Line
Transmit Return
0
X
6
R~-]
RJ1-21 Long Line
Transmit
&
7
RJ1-12 Not Used
RJ1-17 Serial Receive
RJ1-18 Not Used
1, 3,
1
RJ1-10 Not Used
RJ1-13 Clear to Send
(Secondary)
RJ1-14 Transmit Data
(Secondary)
TABLE
NOTES
X_
X
1 and 2
X __
+6
Data Signal
Rate Selector
OUtput
-6
Long Line
Receive
Input
+2
X_
X
DTR
X
5
8
0
33
X
6 and 8
4
TABLE 1-2.
m
N
\0
01:0-
o
o
o
COMM CONNOCTOR
PIN I
NUMBER
SIGNAL
RJ1-241Long Line
Receive Return
-..J
RJ1 -251Not Used
t"l
Applicable Swi tch
Settings
Ase II/PLATO COMM CONNEC.TOR SIGNALS AND PINS
!
ISIGNAL DIRECTIONIMINIMUM
IN RELATION
VOLTAGE
TO TERMINAL
LEVEL
MINIMUM
I INTERNATIONAL
RS-232 INTERFACE
I EXTERNAL MODEMI EXTERNAL I LONG I FRONT PAliIEL
PRIMARY CHANNELISEC. CHANNEL
FOR PLATO
ASCII MODEM LINE INDICATIONS
o
Input
(eONTD)
x
TABLE
NOTES
6
Open
S2-7 set to
primary
S2-7 set to IS2-3 and S2-5
secondary
set to on
S2-7 set to
secondary
S5-6, S5-7
and S5-8
set for
proper
rcv/trans
rate
S2-3,
S2-4
and
S2-5
set
for
proper
tran
rate
TABLE NOTES:
1. primary/secondary channel is switch selectable.
Refer to table 2-5 for signals affected.
2. Request to Send signal of selected channel is governed by resident loader program during controlware loading, then by controlware.
3. With PLATO network, internal/external transmit clock is switch selectable.
,.
4. With ASCII network, use of an external transmit/receive clock is switch or controlware selectable.
5. Switch selectable - either constantly on or usually on and governed by resident loader program during controlware loading, then
by controlware.
6. Unique to long-line communications.
7. With a modem, these signals must be on for terminal to receive.
S. This pin is used for two different signals depending on the application. When it is used as the Data Signal Rate Selector, it
selects the modem for 1200 BPS operation. This is used outside the United States. +12 V = 1200 Baud 0 V = 600 Baud.
GENERAL NOTES:
• When using the XA247-B PLATO modem, no connections are made to this connector.
and the phone and line jacks on1yl Refer to figure 3-S.
The PLATO modem is connected via internal cables
• If a connection is made to the ASCII/PLATO Comm connector, the PLATO modem (if the terminal contains this option) must be
disconnected.
• The signals and levels listed above assume that the Baud Rate, Primary/Secondary and all other switches are set properly for the
mode of operation the terminal is working in. Refer to section 2 of this manual for switch settings.
• X indicates signal is used in this configuration.
• 0 indicates an optional signal which mayor may not be used depending on your application •
. :J
.....
I
.....
indicates pins jumpered together to operate in this mode •
• c indicates that these 1eds light when the secondary channel is selected •
• All voltage levels referenced to pin 7 except 21-24 long line drivers and receivers •
This signal may be supplied.
N
.~
.....
• * These signals may
•
be supplied.
If so, switches S2-3 and S2-4 must be set to "Off" position.
Both must be supplied together and S5-6, S5-7 and S5-S must be set to the "Off" position •
•
Controlware-selectable formatting of communications in
words of:
One start bit
Seven data bits plus a parity bit or eight data bits
and no parity
One stop bit
•
Automatic selection of even parity except when reselected
by controlware (even, odd, or none) or when in timeshare
or graphics mode where even, odd, or no parity is switch
selectable
Characteristics with PLATO Network
With the PLATO network, the characteristics of the ASCII/PLATO
COMM interface are:
•
Asynchronous, full-duplex operation with an automatic
receive rate of 1200 bps
•
Switch-selectable transmit rate of 75, 120, or 1200 bps
or a rate provided by an external transmit clock
•
Automatic selection of even parity
•
Automatic formatting of communications in unique PLATO
network format:
Receive words of 21 bits (figure 1-6)
Transmit words of 13 bits (figure 1-7)
P
S
T
A
R
i
T
A
R
-Ill II I I I I I I I I II I I I I I I
I. I·
19 DATA BITS
j
Y
r1---
SPACE OR"
MARK OR 0*
~·-~----~------------IWORD=21 BITS------------------------~.
*NONCONVENTIONAL BIT POLARITY
Figure 1-6.
62940007 B
03336 -4
Receive Word Format in PLATO Network
1-13
T
p~
~
R
T
T 0
Y P
s
A
,
S
T
J~I---(--.--[--.-'-(. . . - -., . . ---.-[-. .-[-r-(~I~fI [~ ~ ::::
~
I·
10 DATA BITS
..t
0:::
E.
I
...J..--------I WORD: .3 BITS - - - - -....""'.-NEXT03336-4
·CONVENTIONAL BIT POLARITY
Figure 1-7.
Transmit Word Format in PLATO Network
PARALLEL
The PARALLEL connector provides the capability of connecting up
to eight peripheral devices to the terminal in daisy-chain
fashion. Characteristics include:
•
Parallel 8-bit data transfers that are initiated by the
terminal
•
Maximum cable length in daisy chain (including internal
cabling) of 7.6 m (25 ft)*
•
TTL (transistor-transistor logic) compatible signal
levels, defined as follows:
Terminal output
Data Lines
+2.0 V < High < +5.25 V
+0.0 V Z Low Z +0.5 V
Others
+2.4 < High < +5.25 V
+0.0 Z Low Z +0.4 V
Terminal input
Data Lines
+2.0 V < High
-0.25 V (' Low
< +5.25 V
< +0.8 V
Others
+2.4 V < High < +5.25 V
+0.25 V (' Low (' +0.8 V·
Table 1-3 gives the pin assignments.
*Last device in daisy chain must have terminator (part number
15632316).
1-14
62940007 B
TABLE 1-3.
PIN NUMBER
PARALLEL CONNECTOR PIN ASSIGNMENTS
T-----'
T
SIGNAL
ACTIVE LEVEL
I
RJ2-lS
Data Line 0
RJ2-l6
Data Line 1
RJ2-l7
Data Line 2
RJ2-lS
Data Line 3
RJ2-2l
Data Line 4
I IN/OUT I
I
I
·---------r------·--I
High
Both
I
I
High
Both
I
I
High
Both
I
I
High
Both
I
I
High
Both
I
RJ2-22
Data Line S
High
Both
RJ2-23
Data Line 6
High
Both
RJ2-24
Data Line 7
High
Both
RJ2-2
Address Line 0
High
Out
RJ2-3
Address Line 1
High
Out
RJ2-4
Address Line 2
High
Out
RJ2-S
Address Line 3
High
Out
RJ2-6
Address Line 4
High
Out
RJ2-7
Address Line S
High
Out
RJ2-S
External Write
Low
Out
RJ2-9
External Output
Low
Out
External Read
Low
Out
External Ready
High
In
Interrupt
Low
In
RJ2-l0
RJ2-ll
RJ2-l2
Note:
62940007
~
I
I
I
I
I
I
I
Pins RJ2-l, -14, -19, -20, and -25 are grounded.
Pin RJ2-l3 is open.
I-IS
EQUIPMENT SPECIFICATIONS
The following paragraphs describe the physical, electrical, and
environmental specifications for the terminal.
PHYSICAL SPECIFICATIONS
The terminal has the following dimensions and weights:
Width:
Height:
Depth:
Weight:
400 mm (15.75 in)
419 mm (16.5 in)
603 mm (23.75 in)
18.2 kg, (40 lb) 60 Hz
21.8 kg, (48 lb) 50 Hz
ELECTRICAL SPECIFICATIONS
The electrical power requirements for the domestic terminal, are
listed below. The electrical power requirements for the international unit, are listed within parentheses in the cases where
they differ from the domestic unit.
Voltage: 120 V ac (220 to 240 Vac)
Phase: Single
Frequency:
60 Hz (SO Hz)
Current: 1.4 A (0.7 A)
Power Consumption:
0.lS4 kVA
ENVIRONMENTAL SPECIFICATIONS
The environmental requirements of the terminal are:
Operating Temperature:
10°C to 3SoC (SO°F to 9S0F)
Storage Temperature: -40°C to 70°C (-40°F to lS8°F)
Maximum Temperature Gradient:
10oC/h (18°F/h)
Operating Relative Humidity:
Storage Relative Humidity:
Humidity Gradient:
10% to 90% (no condensation)
0% to 100% (no condensation)
10%/h
Maximum Operating Altitude:
3000 m (98S0 ft)
Heat Dissipation:
440 Btu/h (129 W)
Cooling:
1-16
natural convection
62940007 B
I/O CABLE, GROUNDING, AND TOOL REQUIREMENTS
The following paragraphs describe the I/O cables, grounding, and
tools that are required by the terminal.
I/O CABLES
Table 1-4 supplies a detailed breakdown of the I/O cables used
with the terminal.
GROUNDING
No special grounding requirements are necessary for the terminal. A safety ground is provided through the three-prong ac
power plug when connected to a properly grounded site outlet.
TOOLS
Metric hand tools (wrenches, sockets, etc.) are required in the
support of the terminal.
TABLE 1-4.
CABLE
TERMINAL I/O CABLES
CONNECTS BEl'WEEN
EQUIPMENT
I/O CONNECTOR
I
IMAX
PERMISSIBLE LENGTH
PART NO.
LENGTH
51917907
4.3 m
(14 ft)
LINE
Telephone wall
jack
N/A
Supplied with
internfll modem.
51917911
4.3 m
(14 ft)
LINE
Telephone wall
box containing
dedicated telephone line or
CN701-A Acoustic
Coupler
N/A
Supplied with
internal modem.
61406110
3.2 m
(10.5 ft)
ASCII/PLATO
COMM
External modem
15 m
(50 ft)
Supplied with international terminal, optional
with domestic
terminal (option
799-11/YA254-A)
62940007 B
NOTES
1-17
TABLE 1-4.
CABLE
PART NO.
I
LENGTH
1
N/A
I
I N/A
I
ASCII/PLATO
COMM
PARALLEL
device
1 (5 ft)
1
N/A
I
I
I
I
I
I
I N/A
f
N/A
N/A
I
I
IMAX PERMIS- I
SIBLE LENGTH I
I
I
f
Long-line inter- 3000 m*
I
face of PLATO
(10 000 ft) I
site controller
I
or a terminal
I
multiplexer
I
I
7.6 m**
Peripheral
I
CONNECTS BETWEEN
EQUIPMENT
I/O CONNECTOR I
1
1
I
I
I
61408865 I 1.5 m
TERMINAL I/O CABLES (CONTO)
(25 ft)
NOTES
Supplied with
site controller
or multiplexer.
Same or shorter
1 cable supplied
with peripheral
device. Last
device in daisy
chain must have
terminator (part
no. 15632316).
I
I
I
I
I
I
I
I
SERIAL
Undefined
serialcommunication
device
15 m
(50 ft)
25-pin connector, part no.
10129658, with
contact pins,
1
part no. 620138011
or 62013802, mate
with SERIAL
connector.
VIDEO OUT
Undefinedvideo hardcopy
unit. or special
high-resolution
monitor
150 m***
(500 ft)
75-ohm coaxial
cable is
recommended.
*For data rates not e~eeding 1200 bps.
**Maximum length in daisy chain, including internal cabling.
***Maximum length is dependent on cable characteristics, signal termination, and
receiver design.
1-18
,
62940007 B
2
OPERATION
This section describes the function of the external and internal
controls and indicators of the terminal. For terminal operating
procedures, refer to the user's guide that covers the effective
application (a list of publication numbers appear in the
preface) •
EXTERNAL CONTROLS AND INDICATORS
The following paragraphs describe the function of the external
controls and indicators (figure 2-1). The external controls
include the keyboard, ON/OFF circuit breaker, BRIGHTNESS
control, TALK/DATA switch, RESET switch, and the selection
switches behind the protective door. The external indicators
consist of six light-emitting diodes (LEDs).
SELECTION SWITCHES
PROTECTIVE DOOR
(SHOWN OPEN)
TALK/DATA SWITCH
~~"":'----~-:---LEDS
(6)
03914
Figure 2-1.
62940007
External Controls and Indicators
2-1
KEYBOARD
The effect of the codes generated from the keyboard varies with
the application. The code that each key generates is described
in Theory of Operation, section 4.
ON/OFF CIRCUIT BREAKER
Pressing the circuit breaker to ON does the following:
•
Applies power to the terminal and sets logic circuits to
an initial state
•
If enabled by selection switches behind protective door,
initiates the resident diagnostics (diagnostics are
normally disabled except during maintenance)
•
Generates a loading of controlware from the selected
source
The crt filament requires approximately 45 seconds to warm up.
BRIGHTNESS CONTROL
This control adjusts video brightness.
TALK/DATA SWITCH
This slide switch has two functions:
•
2-2
When the optional internal modem is installed, placing
the switch in the TALK position disconnects the terminal
from the PLATO network and internally connects the
telephone line to the telephone plugged into the PHONE
jack, thus allowing voice use of the telephone. This
also occurs automatically when the terminal is powered
off. Returning the switch to the DATA position
reconnects the telephone line to the internal modem for
PLATO network communications.
62940007
If the telephone plugged into the PHONE jack is arranged
with an external modem for alternate operations in an
ASCII network (such arrangements are shown in Installation, section 3), the switch must be left in the TALK
position throughout those operations. This keeps the
internal modem disconnected and allows the telephone line
and external modern to be connected through the terminal.
•
In European applications requiring a switched Data Terminal Ready signal, the TALK/DATA switch serves as an
exclusion switch for the external communications equipment (no international units have internal moderns).
Under these circumstances, internal switch S2-1
(described later in this section) must be set for a
switched Data Terminal Ready signal. This causes the
resident loader program to only issue Data Terminal Ready
when the TALK/DATA switch is set to DATA. After controlware is loaded, this function is governed by the
controlware.
RESET SWITCH
Pressing the RESET switch does the following:
•
Resets most logic circuits
•
Lights all six LEDs on operator panel
•
If no controlware is loaded, initiates the resident diagnostics, if enabled, and generates a loading of controlware from the selected source
•
If controlware is loaded and operations are with the
PLATO network, the result varies with the length of the
reset:
Pressing the switch momentarily causes a checksum to
be performed on each major block of loaded controlware.
Any blocks in error are automatically reloaded,
and if three blocks are in error, a full reloading
occurs.
Pressing the switch for 3 seconds or longer initiates
a load the same as if no controlware were loaded.
62940007
2-3
•
If controlware is loaded and operations are with the Data
Services network, the result varies with the length of
the reset and the mode of operation:
In timeshare or graphics mode, the results of a
momentary or 3-second or longer pressing of the switch
corresponds to that described for PLATO network operations. The only difference being that any controlware
block found in error after a momentary pressing causes
a full (rather than partial) reload.
In PLATO mode, pressing the switch for 3 seconds or
longer causes the terminal to log off PLATO, perform a
checksum on controlware, and if any block is in error,
do a full reload.
Regardless of whether a reload
occurs or not, the terminal subsequentially enters
timesharing mode.
With a momentary pressing of the switch in PLATO mode,
a checksum is performed, and if all controlware blocks
are good, operation continues in PLATO mode. Otherwise, a block in error causes the terminal to log off
PLATO, do a full reload, and then enter timeshare mode.
SELECTION SWITCHES BEHIND PROTECTIVE DOOR
The setting of these switches (figure 2-2) effects controlware
loading, communication characteristics when in timeshare or
graphics mode, and the running of the resident diagnostics. A
selection is made by pressing the side of the switch as shown on
the decal on the back of the door.
Instructions for setting
. these switches are given in Checkout, section 3. Tables 2-1 and
2-2 collectively define their functions.
CAUTION
Do not use a "lead" pencil to set
rocker switches. Graphite dust from
the pencil can cause a switch
malfunction.
2-4
62940007 B
SWITCH DECAL
~OD~
~
L
J
NETWORK~
PARITY
C;~~ CIJ ~~~N
=
=
HALF o:::J FULL
=
=
=
=
=
c:o
LOUD
=
SKIP
=
c::o SOFT
CI::J KB
& TP
~~~B5~~ES:AL
~
=
INTCClEXT
NORMc:I:JSEL
LOAD SOURCE
ROCKER
SWITCHES
0390.
Figure 2-2.
Selection Switches Behind Protective Door
TABLE 2-1.
----- -
I
I
----r-.---------.--.-~--.--.-.-.- -·-·-·r-·-·--·-·-~-·..!·--\
I
I
- --.- ------.--r--.---·
SWITCH
\-~----- -~--
FUNCTION OF SWITCHES BEHIND DOOR
\NETWORK PARITY NO/YES
\
I
I
I
\
FUNCTION
.---.------.-
I
\
NOTES
-T------~
\This switch is only
IIf timeshare
\effective in timeshare
lor graphics
lor graphics mode.
\mode is run
\Setting switch to YES
\online with
lenables parity in com\Data Services
Imunications during thoselnetwork,
modes; setting switch tolswitch must
NO disables parity.
Ibe set to YES.
\
NETWORK PARITY ODD/
EVEN (9)
For this switch to be
IIf timeshare
effective, PARITY NO/YESlor graphics
switch must be set to
Imode is run
YES.
Then this switch
\online with
setting determines
\Data Services
whether terminal uses
Inetwork,
ODD or EVEN parity in
Iswitch must
communications during
Ibe set to
timeshare or graphics
I EVEN.
mode.
I
NETWORK HALF/FULL (8)
This switch setting is
only effective in timeshare or graphics mode.
With switch in HALF
position, keyboard data
is displayed simultaneously as it is transmitted.
In FULL
position, keyboard data
I
62940007 B
IIf timeshare
I
lor graphics
I
Imode is run
I
lonline with
I
IData Services I
Inetwork,
I
Iswitch must bel
Iset to HALF
I
Iposition.
I
2-5
TABLE 2-1.
I~-'----
I
I
FUNCTION OF SWITCHES BEHIND DOOR (CONTD)
---"--.---.- --.----.-----r--SWITCH
,--.-----------
I
FUNCTION
I
r-
I
I
----·-·-~·~~--~---~-·~T'--
I
I
I
IReserved (7)
I
Reserved for applications use.
I
I
I
I
ILOUD/SOFT (6)
I
NOTES
'~~--;.r---
is not displayed until
it returns from host
computer.
I
I
_._,,_._ . _-
-'~I
I
I
I
I
I
I
I
I
IUnless other- I
Iwise assigned, I
Iset switch 7 I
I to the left or I
ION position.
I
I
I
I
I
Determines whether terminal sounds a LOUD
lor SOFT alarm.
I
I
I
ISKIP/KB&TP (5)
I
I
I
I
I
I
I
I
I
I
IFor this switch to be
leffective, SKIP/TEST
I (4) switch must be set
Ito TEST. Setting of
Ithis switch then deterImines whether crt alignIment, keyboard, and
I touchpanel tests (KB&TP)
lare included in running
Idiagnostics or are
Ibypassed (SKIP).
Resident
diagnostics
are described
in Maintenance, section 6.
ISKIP/TEST (4)
I
I
I
I
I
I
I
I
I
I
Resident
diagnostics
are described
in Maintenance, section 6.
I
I
IWhen resident diagnosItics are to be run
Iduring maintenance,
Ithis switch is set to
ITEST. Resident diagI nostics then autoImatically run after a
Ipower on or when RESET
Iswitch is pressed (if
I controlware is loaded,
IRESET may have to be
Ipressed twice, each
Itime for 3 seconds or
Ilonger).
I
I
I
I
I
I
I
I
I
I
IConditions
Ithat cause
I alarm to
Isound varies
with application.
I
ILOAD SOURCE HOST/LOCAL
IThese switches,
Instructions
I (3),
I together with the
for loading is
I
I switches listed in
contained in
ILOAD SOURCE INT/EXT (2), Itable 2-2, determine
startup proceI
Ithe source and control- dure in termiI
Iware file that is
Inal operator's
ILOAD SOURCE NORM/SEL (1) laccessed during loading.lguide (refer
I
ITable 2-2 defines the
Ito preface for
I
Iselections.
Ipublication
I
I
Inumber).
2~ -~'---.'~-.-------'. -----~-~-'---··-·---------··------·---~~62940007 G
I
I
I
I
I
TABLE 2-2.
LOAD SWITCH SELECTIONS
-1
--- -
I~U)AD~ SOURCE
I
----- INTERNAi.-S~IITcH -SETTINGs*Tl~ x_~~~_~_
-~~I SWITCH SETTINGS I CONNECTED I
< I
-~ - -I - -- - - --I
IHOSTJIINT/rNORM/ NETWORK* I
I
I
I
LOCAL EXT I SEL
I S5-1 I S5-2 I S5-3
S5-4 I CONTROLWARE FILE AND SOURCE
-- -, --
HOST
~~-
X***INORM
-
-1--
-~
x***
x***
PLATO
OFF
ON
x***
x***
PLATO
ON
OFF
x***
x***
IFile 2 from PLATO network
I computer.
PLATO
OFF
OFF
x***
x***
IFile 3 from PLATO network
I computer.
Data
Services
x***
x***
ON
ON
Data
Ix***
Services I
Ix***
I
I
I
I
I
X***INORM
I
I
I
I
I
Data
Ix***
Services I
HOST Ix***INORM
I
I
I
Data
Services
HOST Ix***INORM
I
I
I
I
I
I
I
I
I
I
LOCALI EXT I NORM
LOCALIINT
I
IFile 0 from Data Services
Inetwork computer.
I
HOST Ix***INORM
I
I
IFile 1 from PLATO network
I computer.
I
X***INORM
I
I
IFile 0 from PLATO network
I computer.
ON
I
X***INORM
HOST
-- --
ON
I
I
HOST
-~-
I
X***INORM
HOST
-- - -
PLATO
I
I
HOST
~-
IrreleIvant
x***
x***
I
I
Ix***
ON
I
I
Ix***
I
I
Ix***
x***
Ix***
I
I
ION
I
I
I
I
I OFF
I
I
OFF
x***
I
I
I
I
I
NORM IIrreleIvant
OFF
IOFF
I
I
Ix***
I
I
I
x***
Ix***
I
I
IFile 1 from Data Services
Inetwork computer.
I
IFile 2 from Data Services
Inetwork computer.
I
IFile 3 from Data Services
network computer.
File on flexible disk in
associated flexible disk
drive.
File from optional ROM within
terminal.
x*** Ix*** SEL IRelevant Relevant upon Relevant upon With aid of displayed prompt,
I
lif host
file-entry
file-entry
load selection of flexible
I
lis
Idefault if
default if
disk, host, or internal ROM
I
Iselected Ihost is
Ihost is
is made via keyboard or
I
I
Iselected and Iselected and touchpanel. If host is seI
1
Iterminal is Iterminal is
lected, file number selection
I
1
Iconnected to Iconnected to is made either through key1
I
IPLATO networklData Serviceslboard or through settings of
1
I
I
I
I network
IS5-1/-2 or S5-3/-4 internal
1
I
I
I
I
I
Iswitches by default.
I
I
I
I
I
I
I
<*co~~ected means that communications a~e establi~ed with netwo~k:--For this to
be true, internal/external modem must be detecting a carrier and terminal must
be receiving network idle codes, that is, PLATO NOP codes in PLATO network;
ASCII CR, LF, or / (slash) codes in Data Services network.
**Internal switches S5-1 through -4 are set for the network files normally used
in the application.
***X = either eosition.
62940007
2-7
LIGHT-EMITTING DIODES (LEDS)
These LEDs on the operator panel serve two purposes:
•
During normal operation, they indicate networkcommunication status as defined in table 2-3.
•
When resident diagnostics are run, the indicators show
codes for detected errors. This is described in
Maintenance, section 6.
TABLE 2-3.
I
I
MEANING OF LEDS DURING NORMAL OPERATION
MEANING WHEN LIT
LED
,----------------+------------------------------------------
I
IDTR (Data
I Terminal Ready)
I
IDSR (Data Set
Ready)
Terminal is issuing Data Terminal Ready signal to internal/external modem.
Terminal is receiving Data Set Ready signal
from internal/external modem.
RTS (Request to
Send)
Terminal is issuing Request to Send signal
to internal/external modem.
RCV (Receive
Data)
Terminal is receiving data.
XMT (Transmit
Data)
Terminal is transmitting data.
ERR (Error)
ITerminal has detected a parity error in
Ireceived data or a loss of communications
thas occurred. Error condition is cleared
lupon receipt of a retransmission, a power
loff/on, or a reset.
I
INTERNAL CONTROLS AND INDICATORS
The following paragraphs describe the function of the controls
and indicators that are inside the terminal (figure 2-3). These
include the Communications Loopback switch; Refresh Memory Write
switch; Flood Screen switch; the S2, S5, and ROM selection
switches; the display board controls; and the power-supply board
controls and indicators.
2-8
62940007
VIDEO BOARD
POWER-SUPPLY BOARD
CONTROLS AND INDICATORS
DISPLAY BOARO CONTROLS
REFRESH MEMORY WRITE SWITCH:
CENTER:OFF
LEFT: WRITE ALL I'S
RIGHT: WRITE ALL O'S
COMMUNICATIONS
LOOPBACK SWITCH:
LEFT:NORMAL
RIGHT: TEST
(FOR SECONDARY CHANNEL ONLY)
55 SELECTION SWITCHES:
S5-1 THROUGH S5-8
(BOTTOM TO TOP,
RESPECTIVELY.)
~ CO:J":.:'~LER
- - - - - - - . ; - - 52 SELECTION SWITCHES:
S2-1 THROUGH S2-10
(BOTTOM TO TOP,
RESPECTIVEL Y)
VIDEO
BOARD
03913
Figure 2-3.
62940007 E
Internal Controls and Indicators
2-9
COMMUNICATIONS LOOP BACK SWITCH
The communications loopback switch will work only if network
communications are via an external modem that transmits data on
the secondary channel. (Only international units normally use
the secondary channel. The position of switch S2-7 indicates
whether the primary or the secondary channel is used.) The
communications loopback switch allows the quality of the
communications facilities to be tested by the host computer.
Operation is as follows:
o
With the switch in the TEST position, data received via
the ASCII/PLATO COMM interface is looped back as
secondary-channel transmit data.
o
With the switch in the NORM position, data is received as
normal.
REFRESH MEMORY WRITE SWITCH
NOTE
Operation of this switch destroys the
contents of the refresh memory.
This momentary three-position switch allows the refresh memory
to be tested manually. Holding the switch to one side or the
other either writes all Is (illuminate bits) or Os (blacken
bits) into .refresh memory. If the memory is operating properly,
the display area on the screen correspondingly becomes
completely illuminated or completely black. If this does not
occur, use of the following described Flood Screen switch can
verify whether video output or refresh memory is faulty.
FLOOD SCREEN SWITCH
This momentary three-position switch allows the video output to
be checked. Holding the switch to either side forces the video
output to a constant unblanking state, thus illuminating the
entire screen. This does not affect refresh memory nor stop
activity of logic circuits.
2-10
62940007 E
S2, S5, AND ROM SELECTION SWITCHES
These three blocks of switches are set to condition the terminal
for network communications and memory options that have been
installed.
Instructions for setting these switches are given in
Installation, section 3. A decal (figure 2-4), located inside
the hood, identifies the function of each switch and tables 2-4
and 2-5 collectively define their functions.
CAUTION
Do not use a ulead- pencil to set rocker
switches. Graphite dust from the pencil
can cause a switch malfunction.
SELECTION SWITCH INFORMATION
CONTROLLER MODULE (NEAR BOARD)
8 POSITION SWITCH LOCATED AT CARO POSITION C-13
RECEIVE/TRANSMIT RATE
~
DEFAULT OATA RATE FOR
{ON
ASCII COMMUNICATION NETWORK: - - - - - - ON
(SEE TABLE AT RIGHT)
ON
DEFAULT LOAD FILE NUMBER
{ON
FOR DATA SERVICES NETWORK' - - - - - - - (SEE TABLE AT RIGHT)
ON
DEFAULT LOAD FILE NUMBER FOR
{ON
PLAT~E~OT~~~~IC.NW.~H~~TWORK' - - - - - - ON
t::::J
55
=m
rn
[]J
rn
m
rn
3
m
m
75/
75
BPS
ON
OFF - - - - - ON
OFF - - - - - OFF ______ I-ON
OFF
',
300/
150/
150
BPS
600/
600
BPS
300
BPS
1200/ 2400/ 1200/ EXT
1200 2400
75 CLOCK
BPS
BPS
BPS INPUT
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
LOAD FILE NUMBER
o
OFF,
' ,
OFF - :.'0.. - .::: ~
OFF - - - :: :::: '"
ON
I
I
I I 2 I 3
ON I OFF I OFF
ON I OFF I ON I OFF
~.
~
CONTROLLER MODULE
10 POSITION SWITCH LOCATED AT CARD POSITION G-II
e=:j
BYTES OF PROGRAM MEMORY'------------ 16K
TOUCH PANEL PRESENT'- - - -- - - - - - - - - -- NO
LOOP ON DIAGNOSTIC TESTS: - - - - - - - - - - - - NO
r
ASCII/PLATO TRANSMIT CHANNEL' - - - SECONDARY
52
r=
[JQJ
rn
IT]
rn
m
m
N
ON
ON
rn
ASCII/PLATO COMMUNICATIONS DTR:---- SWITCHED
m
[J]
TRANSMISSION RATE TO
PLATO COMMUNICATION NETWORK: -- - - - - (SEE TABLE AT RIGHT)
rn
(FAR BOARD)
t:::::J
4 POSITION SWITCH
LOCATED AT CARD POSITION A-IO
32K
YES
YES
TRANSMIT RATE
PRIMARY
OFF - - - - - OFF - - - - - OFF ____ -_
75
BPS
120
BPS
ON
OFF
EXT
1200
CLOCK
BPS INPUT
X
X
X
X
ON
OFF
ON
ON
OFF
OFF
x = EITHER
POSITION
CONSTANT
'-'--
t:::J
c:::::J
ROM NOT
PRESENT
ROM
PRESENT
ROM
~
IROM II
IROM 2/
IROM
31
IROM
41
=
039HH
Figure 2-4.
62940007
Decal Inside Hood
2-11
TABLE 2-4.
FUNCTION OF INTERNAL SELECTION SWITCHES
SWITCH
S2-1
S2-2
\S2-3,-4,-5
S2-6
\S2-7
FUNCTION
Determines whether Data Terminal Ready signal of
ASCII/PLATO COMM interface or internal-modern
interface is constantly on or switched. A
switched Data Terminal Ready signal allows TALK/
\ DATA switch on operator panel to serve as an
exclusion switch for external equipment in
European applications.
Not used.
Selects transmission rate for PLATO network
communications.
For ASCII communications, position of switches is irrelevant.
Not used.
Determines whether primary-channel or secondarychannel RS-232-C/CCITT V.24/V.28 signals of
ASCII/PLATO COMM interface are used for transmitting data. Affected signals are listed in
table 2-5.
S2-8
S2-9
For CC629-A/B, indicates whether RAM expansion
Ioption
is installed (32K position) or not
installed (16K position).
(Locations on video
board for optional RAM are shown in Installation,
section 3.) The 32K position must be selected
for CC629-C/D.
IS5-1,-2,-3,-4IIf a file number is not entered through the keyboard, these switches designate the controlware
file that is accessed from the respective netw9rk
computer when loading from the host. Switches
S5-1 and -2 are set for the PLATO network file
normall Y used in the application~ and switches
\ S5-3 and -4 similarly set for the Data Services
network file.
For an overview of all the
switches that affect load source and file
selection, refer to table 2-2 which appears
earlier in this section.
2-12
62940007 E
I
TABLE 1-2.
0\
t.J
\0
COMM CONNJOC:'l'OR
PIN I
NUMBER
SIGNAL
.a:.
RJ1-241Lonq Line
Receive Return
o
RJ1-251Not Used
Iz.1
Applicable Switch
Settinqs
o
o
....a
ASCII/PLATO COMM CONNECTOR SIGNALS AND PINS (CONTD)
I
---r--
I
·1
ISIGNAL DIRECTION MINIMUM
MINIMUM
INTERNATIONAL
IN RELATION
VOLTAGE
RS-232 INTERFACE
EXTERNAL MODEM EXTERNAL
LONG FRONT PANEL
TO TERMINAL
LEVEL I PRIMARy CHANNELISEC. CHANNEL
FOR PLATO
IASCII MODEMI LINE IINDlCATIONS
o
Input
x
TABLE
NOTES
6
Open
S2-7 set to
primary
S2-7 set to
secondary
S2-3 and S2-5
set to on
S2-7 set to
secondary
S5-6, S5-7
and S5-8
set for
proper
rcv/trans
rate
S2-3,
S2-4
and
S2-5
set
for
proper
tran
rate
TABLE NOTES:
1. Primary/secondary channel is switch selectable.
Refer to table 2-5 for siqnals affected.
2. Request to Send siqnal of selected channel is qcverned by resident loader
pro~am
durinq controlware loadinq, then by controlware.
3. With PLATO network, internal/external transmit clock is switch selectable.
4. With ASCII network, use of an external transmit/receive clock is switch or controlware selectable.
5. Switch selectable - either constantly on or usually on and qoverned by resident loader proqram durinq controlware loadinq, then
by controlware.
6. Unique to lonq-line communications.
7. With a modem, these siqnals must be on for terminal to receive.
8. This pin is used for two different siqnals dependinq on the application. When it is used as the Data Siqnal Rate Selector, it
selects the modem for 1200 BPS operation. This is used outside the United States. +12 V - 1200 Baud 0 V - 600 Baud.
GENERAL NOTES:
• When usinq the XA247-B PLATO modem, no connections are made to this connector.
and the phone and line jacks onlyl Refer to fiqure 3-8.
The PLATO modem is connected via internal cables
• It a connection is made to the ASCII/PLATO Comm connector, the PLATO modem (if the terminal contains this option) must be
disconnected.
• The siqnals and levels listed above assume that the Baud Rate, Primary/Secondary and all other switches are set properly for the
mode of operation the terminal is workinq in. Refer to section 2 of this manual for swi tch settinqs.
• X indicates siqnal is used in this confiquration.
....
I
....
to.J
•
....
........
• 0 indicates an optional siqnal Which mayor may not be used dependinq on your application •
·J
indicates pins jumpered toqether to operate in this mode.
indicates that these leds liqht when the secondary channel is selected •
• All voltaqe levels referenced to pin 7 except 21-24 lonq line drivers and receivers •
.0
....t
i. ~
to.J
• * These siqnals may
....
•
...
to.J
This siqnal may be supplied.
be supplied.
If so, switches S2-3 and S2-4 must be set to "Off" position •
Both must be supplied toqether and S5-6, S5-7 and S5-8 must be set to the ·Off" position •
TABLE 2-4.
FUNCTION OF INTERNAL SELECTION SWITCHES (CONTD)
SWITCH
FUNCTION
S5-5
Not used.
S5-6,-7,-8
Selects receive/transmit rates for ASCII network
communications. After loading occurs, controlware can override this selection.
ROM SEL-l, -2, Each of these switches indicate whether an
-3,-4
optional 4K increment of ROM/EROM is installed.
(Locations on video board for optional ROM/EROM
are shown in Installation, section 3.)
TABLE 2-5.
ASCII/PLATO COMM
PIN NUMBER
INTERFACE SIGNALS AFFECTED BY SWITCH S2-7
SIGNAL
PRIMARY
SELECTED
SECONDARY
SELECTED
&11-2
Primary Channel
Transmit Data
Dynamic
Mark
RJl-14
Secondary Channel
Transmit Data
Mark
Dynamic
&11-4
Primary Channel
Request to Send
On*
Off
RJl-19
Secondary Channel
Request to Send
Off
On*
RJl-5
Primary Channel
C lear to Send
Must be
on to
transmi t
Ignored
RJl-13
Secondary Channel
Clear to Send
Ignored
Must be
on to
transmit
*Governed by resident loader program and controlware,
usually on.
62940007
2-13
DISPLAY BOARD CONTROLS
The controls on the display board provide horizontal-linearity,
horizontal-size, horizontal-frequency, vertical-linearity,
vertical-size, vertical-frequency, video-gain, and focus adjustment for the display. The use of these controls is described in
Maintenance, section 6.
POWER-SUPPLY BOARD CONTROLS AND INDICATORS
The controls and indicators on the power supply board
(figure 2-5) include two potentiometers, a 50/60-Hz switch, and
five LEDs. Their functions are as follows:
•
The potentiometers are for adjusting the +5-V and +55-V
power outputs. These adjustments are described in
Maintenance, section 6.
•
The setting of the 50/60-Hz switch determines whether the
vertical sync of the display is at a 50- or 60-Hz rate.
On a domestic terminal, the switch is to be set to the
60-Hz position; on an international unit, to the 50-Hz
position.
•
The +5-V, +55-V, +12-V, -5-V, and -12-V LEDs light
whenever the corresponding power outputs are energized.
However, this does not necessarily mean that they are
correct. The procedure for checking the outputs is in
Maintenance, section 6.
Figure 2-5.
2-14
Power~Supply
Board Controls and Indicators
62940007
INSTALLATION AND CHECKOUT
3
This section contains instructions on the crating, uncrating,
installation, and checkout of the terminal.
NOTE
Metric hand tools are required to
service the terminal.
CRATING
Figure 3-1 details the crating instructions to be followed when
the terminal is to be shipped.
Use only approved materials to
protect against shipping damage. Ship only by van or air.
Do
not ship via truck or ocean vessel. Approximate shipping weight
of the packaged terminal is 21 kg (46 lb) for the domestic unit,
and 24 kg (53 lb) for the international unit.
To obtain approved instructions and materials, contact the
nearest CDC representative or:
Control Data Corporation
Corporate Traffic
8100 34th Avenue South
Minneapolis, Minnesota 55440
UNCRATING
To uncrate the terminal, refer to figure 3-1 and do the
following:
1. Open top of exterior container.
2. Lift terminal with end frames attached from container.
Remove end frames.
3. Inspect terminal for shipping damage.
File promptly any
claim for damage with the transporter involved.
If a
claim is filed, save original packaging materials.
62940007 B
3-1
NOTES
1.
USE PREFABRICATED SHIPPING MATERIALS (CDC PART NUMBER 41038200) FOR PACKAGING.
2.
INTERLOCK FOAM BASE LEGS WITH END FRAMES.
3.
PLACE END FRAMES WITH BASE LEGS ON TERMINAL.
4.
PLACE TERMINAL WITH END FRAME CUSHIONING INTO EXTERIOR CONTAINER.
5.
LOCK "L" BLOCKS IN POSITION.
6.
SECURE POWER CABLE IN SLIT OF END FRAME AS SHOWN.
7.
CLOSE AND SEAL EXTERIOR CONTAINER WITH 3-IN, REINFORCED, BOX-SEALING TAPE.
END FRAME
~EXTERIOR
CONTAINER
034'7-1
Figure 3-1.
3-2
Terminal Packaging
62940007
INSTALLATION
This portion of the section contains the installation instructions for the terminal. These instructions are divided as
follows:
•
•
•
•
Preparing terminal
Installing options
Installing cabling
Setting internal switches
PREPARING TERMINAL
To prepare the terminal for installation, do the following:
1. Set terminal on flat surface where it is to be used. A
102 mm (4 in) clearance must exist around terminal for
ventilation.
2. Remove two screws from rear of hood and slide hood off
rear of terminal.
3. Check that internal cable connections are secure and that
there are no loose wires.
4. The following only applies to international units. If
installing a domestic unit, proceed to Installing
Options. Check whether power-cord plug mates with site
outlet. If not, replace plug as follows:
a. Cut power cord next to plug and strip insulation from
end of cord.
b. Install an appropriate plug on cord and connect:
•
Green/yellow wire to safety ground
•
Brown wire to hot
•
Blue wire to neutral
INSTALLING OPTIONS
The following paragraphs describe the installation of the RAM
expansion, ROM/EROM expansion, and internal modem/DAA options.
If none of these apply, proceed to Installing Cabling.
62940007 B
3-3
I
Installing RAM Expansion Option (Applies to CC629-A/B Units)
The RAM expansion consists of eight 16-pin MOS type integratedcircuit chips that plug into existing sockets on the terminal
video board. Observe the following caution when installing the
chips.
CAUTION
Follow precautionary rules for handling MOS type circuits as described
in section 6.
To install the chips, refer to figure 3-2 and do the following:
1. Remove video board from terminal per procedure 6 in
section 6.
2. Insert chips into 010 through 017 locations on video
board with dot or indentation at notched end of sockets.
NOTE
If ROM/EROM expansion is to be
installed, disregard the next step
and leave video board out.
3. Reinstall video board in terminal per procedure 6.
4. Refer to decal inside hood and set switch 52-10 on controller board to 32K position.
5. Refer to identification label that was packaged with
chips and enter that information on existing identification label at rear of terminal. Include part number,
equipment-identification code, and serial number.
6. Install RAM expansion identification label and FCO log in
area shown in figure 3-3.
3-4
62940007 E
~ a
0DODO0DOD 0~O ~D1ro
~DDDDDDDDD 0 00000
00000000~ =~~~ nnn
nOD 0Dim
J
LJ
(100000000000000 u
LJoODDDDDDDDDOOOOOODD
f iOO= 0 00000 00 000 000000
ill Dl1DQO OjlDllil 0000000
. Dl7
016
015
014
013
011
012
010
039/1-1
.
.
Figure 3-2.
Video Board Locations for RAM Expansion
EQUIPMENT
IDENTIFICATION
LABEL
EXISTiNG EQUIPMENT
IDENTIFICATION LABEL
03604-1
Figure 3-3.
62940007
Equipment Identification Label and FCC Log Placement
for Memory Expansion Options
3-5
Installing ROM/EROM Expansion Option
The ROM/EROM expansion consists of from one to four 24-pin MOS
type integrated-circuit chips that plug into existing sockets on
the terminal video board. Observe the following caution when
installing the chips.
CAUTION
Follow precautionary rules for handling MOS type circuits as described
in section 6.
To install the chips, refer to figure 3-4 and do the following:
1. Remove video board from terminal per procedure 6 in
section 6.
2. Each ROM/EROM expansion chip is marked with a number 1 to
4 that identifies its corresponding ROM socket.
Insert
chips into corresponding sockets with dot or indentation
at notched end of sockets.
3. Refer to decal inside hood and set ROM SEL switches on
video board to reflect which ROM sockets are now occupied.
4. Reinstall video board in terminal per procedure 6.
5. Refer to identification label that was packaged with
chips and enter that information on existing
identification label at rear of terminal.
Include part
number, equipment-identification code, and serial number.
6. Install ROM/EROM expansion identification label and FCO
log in area shown in figure 3-3.
3-6
62940007
NOTCH IN SOCKETS
ROM 3 SOCKET
ROM 4
Mr
ROM 2 SOCKET
'
SOCKET~_
_
ROM I SOCKET
___
(~
1---_ _ _----...
n 0 [lDlm
a
~ 0000000000 '0 -GTITI
~DDDDDDDDDD 0 00000
ROM SEL SWITCHES:
ROM I THROUGH ROM 4
(TOP TO BOTTOM,
RESPECTIVELY)
uDDDDDDDDDomDDDD
o DDDDD~DDDDDD 0
~il~~~~~~D~~~~~~~~~~
WOOOillDQD DlLDl1] 0000DOD
Figure 3-4.
03911- 2
Video Board Locations for ROM/EROM Expansion
Installing Internal Modem/DAA Option*
The internal modem/DAA option consists of two 4.3-m (l4-ft)
cables (proper cable for facilities is connected later in
Installing Cabling), two PC boards, and the parts necessary for
installing the boards in the terminal. To install the boards,
refer to figure 3-5 and do the following:
1. Remove two screws mounting ac entry panel (figure 3-5).
Leave wiring connected and raise ac entry panel and tilt
forward.
2. Remove ac entry cover plate from entry panel.
NOTE
Retain cover plate on site.
3. Install PC board containing telephone jacks as shown in
figure 3-5 and fasten to entry panel with two screws and
lockwashers.
*Internal modern is for PLATO network use only.
62940007 G
3-7
~
MOUN.TING
SCREW
ACENTRY
......
~COVER PLATE
GROUND SPRING
FCO LOG
CONTROLLER
BOARD
TO AJ5
CABLE TIES AT
STANDOFFS
\THREE PLACES)
MODEM IDENTIFICATION
LABEL
MONITOR CHASSIS
MOUNTING SCREW
(USE AS GROUND)
EXISTING EQUIPMENT
IDENTIFICATION LABEL
r.J...;!~---'--FCC
CERTIFICATION LABEL
LINE
GREEN--
VB J9
~:~;; ~ ~-;-- TERMINALS ON
'" "
MODEM BOARD
PHONE
HlH
~~~ i~ ~
RED - - =:::::==W>
IHK J9
Figure 3-5.
8
Internal Modem/DAA Installation
3-8
62940007 E
4. Place entry panel back in position and install mounting
screws, but do not tighten.
5. Slide entry panel to back of terminal so that grounding
springs on newly installed PC board are firmly against
hood-mounting post in base. Tighten entry panel mounting
screws.
6. Remove operator panel cable clamp from monitor chassis
(figure 3-6) and discard.
7. Fasten a ground wire to monitor chassis mounting screw
shown in figure 3-5. (Other end will be connected later.)
8. Position shield with copper-clad side outward as shown in
figure 3-6. Insert three provided standoffs and attach
shield to monitor chassis.
9. Run operator panel cable along outside of shield so it
will be between shield and modem board after board is
installed.
10. Insert fourth provided standoff through upper-right
corner of modem board (this is for proper spacing between
shield and board).
11. Install modem board as follows:
a. Position board as shown in figure 3-6.
b. Make sure operator panel cable is between shield and
board.
c. Align board so its three mounting holes line up with
standoffs on shield.
d. Press board into place by pushing it over three standoffs. Fourth standoff protrudes through clearance
hole in shield.
e. Insert cable ties (part number 94277400) through ends
of three standoffs (leave cable tie off fourth standoff) and lock each cable tie. (Cable ties ensure that
board stays securely attached to shield.)
f. Connect modem-board cable to AJ5 on controller board
with red stripe on cable pointing down.
12. Fasten other end of ground wire installed in step 7 to
ground (GND) terminal on modem board.
13. Refer to labeling and connect wires from telephone-jack
board to J2, J3, and J5 terminals on modem board
(figure 3-5).
62940007
3-9
III I
,,
0'
,
--.., ,
. ,,
,,
,
o
,,
NOTE THAT CHASSIS
______DOES
NOT EXTEND UP
~
.
BEHIND THIS
MOUNTING HOLE
-\:OPERATOR PANEL
CABLE
'\
,
MODEM BOARD
""
CRT
FRONT~
OPERATOR PANEL
CABLE CLAMP
~- (COMPONENT SIDE OUT,
\ ~I-
l
Y
u~L~0:; ; 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 ~ 1
\',
o
..
MOUNTING HOLES
(SEE MOUNTING DETAIL)
COPPER CLAD
SIDE OF SHIELD
\J
MONITOR CHASSIS
LOCATION OF
STANDOFFS
COMPONENT
SIDE
CABLE TIE
(THREE PLACES)
PIN 94277400
MODEM
STANDOFF
(FOUR PLACES)
[l
MONITOR CHASSIS
PRINTED CIRCUIT
SHIELD
COPPER CLAD SIDE
MODEM BOARD
MOUNTING DETAIL
Figure 3-6.
3-10
03603-'
Modern Shield and Board Installation
62940007 B
14. Refer to iden~ification label tha~ was packaged wi~h
parts and enter tha~ information on existing identification label at rear of ~erminal. Include part number,
equipment-identification code, and serial number.
15. Install modem identification label, modem FCO log, and
FCC (Federal Communications Commission) label in locations shown in figure 3-5.
INSTALLING CABLING
The following paragraphs describe the cabling for the communication ~rrangements listed below. This is done with illustrations
which show typical equipment setups. Refer to the paragraph
that is appropriate for the installation, and be sure to tighten
screws when connecting cables with connector re~ainers.
NOTE
The CDC CN701-A Acoustic Coupler,
which may be encountered in an
installation, is only a coupler.
Standard acoustic couplers are a
combination coupler and modem.
NOTE
The term Dataphone used on the following pages refers to a modem and is
a registered trademark of American
Telephone and Telegraph.
NOTE
In PLATO mode, FORWARD DATA, (CPU to
terminal) is always 1200 b/s.
Reverse data (terminal to CPU) is
switch selectable. Refer to tables
1-2, 2-1 and figure 2-4 for proper
switch settings and pin assignments.
•
•
•
•
Communications via external modem
Communications via internal modem
Communications via internal/external modem
Communications via long-line receiver/driver
Communications Via External Modem
To connec~ the terminal to an external modem, refer to
figure 3-7 and make applicable connections.
62940007 G
3-11
TERMINAL
CABLE PROVIDED
WITH EXTERNAL
MODEM
CABLE*
ASCII/PLATO
COMM
MODEM
WITH DAA
\ . REAR-PANEL CONNECTOR
FCC-RJ45
TELEPHONE JACK
10-_ _. ." " " - - -
TE L E PH 0 NE "'"---T'""....
WALL JACK
03910-3
-------------------MODEM-------------------------------____ TELEPHONE
,WALL JACK
TERMINAL
STANDARD'
ACOUSTIC
COUPLER
- - - - - - - - STANDARD ACOUSTIC COUPLER - - - - - - - - -03910-3
--MULTIBUTTON TELEPHONE
WITH EXCLUSION FUNCTION
CABLE""
TERMINAL
ASCII/PLATO
COMM
WESTERN ELECTRIC
212A DATA SET
\ . REAR-PANEL CONNECTOR
\ . CABLE PROVIDED
WITH TELEPHONE
TELEPHONE
WALL BOX
03910-4
-----------------DATAPHONE------------------------------*3.2-m (l0.5-ftl MODEM CABLE OR EQUIVALENT CABLE UP TO 15m (50ft) LONG
Figure 3-7.
3-12
Communications Via External Modem
62940007 E
Communications Via Internal Modern
To connect the internal modern to telephone facilities, refer to
figure 3-8 and make connections as applicable.
f
./""'TELEPHONE
...---..... ,
WALL JACK
CABLE 51917907"
r--------~==~~~~-------~
REAR-PANEL CONNECTORS
ILINE
,
TERMINAL
PHONE
CORD FROM)
TELEPHONE
ASCII/PLATO
COMM
03910
- - - - - - - D I R E C T CONNECTION - - - - - - - - - - - - END WITHOUT PLUG. CONNECT RED WIRE TO DATA
RING (DR) AND GREEN WIRE TO DATA TIP(Dn. LEAVE
YELLOW AND BLACK WIRES DISCONNECTED.
TELEPHONE
.....-<_.,WALL BOX,--.L..-..L.-_---''--........
CN701-A
ACOUSTIC
COUPLER
(
f
CABLE 51917911'*
I
,
LINE
. TERMINAL
ASCII/PLATO
COMM
~
.,~.
REAR-PANEL CONNECTORS
.. -.-:-----
~-
039'0-5
-----COUPLED INTERNAL M O D E M - - - - - - - - - - - -
f
~TELEPHONE
,-----i
WALL BOX
CABLE 519179""
~------------~------~~~~~~--------~
....._""'\
END WITHOUT PLUG. CONNECT RED
""AND GREEN WIRES TO DEDICATED
TELEPHONE LINE, LEAVE YELLOW
AND BLACK WIRES DISCONNECTED.
RED WIRE GOES TO RING, GREEN TO TIP.
,
REAR-PANEL CONNECTORS
ILINE
TERMINAL
PHONE
ASCII/PLATO
COMM
- - - - - - DEDICATED LINE - - - - - - - - - - - - - - ·tt
4.3-", (l4-ft) CAlLE PROVIDED WITH INTERNAL MODEM
Figure 3-8.
62940007
Communications Via Internal Modern
3-13
Internal/Ext~rnal
Communications Via
Modem
This type of arrangement is for alternate network operations.
When communicating with the PLATO network, the internal modem is
used~ when communicating with an ASCII network, the external
modem is used. Refer to figure 3-9 and make connections as
applicable.
,...--.,,
(
/TELEPHONE
WALL JACK
CABLE 51917907
**
,
REAR-PANEL CONNECTORS
TERMINAL
1
LINE
CORD FROM
TELEPHONE
~
ASCII/PLATO
COMM
----
',,~
..
.~'.------
CABLE*
STANDARD
ACOUSTIC
COUPLER
03910-1
_ _ _ _ _ DIRECT CONNECTED INTERNAL MODEM _ _ _ _ _ _ _ __
AND STANDARD ACOUSTIC COUP~ER
r - - -..... ,
/TELEPHONE
WALL BOX
~
r--"--...I---"--..&.......,
END WITHOUT PLUG. CONNECT RED WIRE TO DATA
RING (DR) AND GREEN WIRE TO DATA TIP(Dn. LEAVE
YELLOW AND BLACK WIRES DISCONNECTED.
**
CABLE
51917911 \
CN701-A
ACOUSTIC
COUPLER
\
(REAR-PANEL CONNECTORS
,
1
TERMINAL
.
CABLE " "
ASCII/PLATO
COMM
STANDARD
ACOUSTIC
COUPLER
03910-5
_ _ _ _ _ _ COUPLED INTERNAL MODEM AND _ _ _ _ _ _ _ _ __
STANDARD ACOUSTIC COUPLER
*
3.2-m (10.5 oft I )lODEM CABLE OR EQUIVALENT
CABLE UP TO 15 m (50 fI) LONG
Figure 3-9.
3-14
** 4.3-m (l4-ft) CABLE
PROVIDED WITH INTERNAL MODEM
Communications Via Internal/External Modem
(Sheet 1 of 2)
62940007 E
f
TELEPHONE
rWALL JACK
,...--.."
CABLE 51917907* -
~----------~=:~~~~----------------~
,
REAR-PANEL CONNECTORS
ILINE
TERMINAL
CORD FROM
TElEPHONE
CABLE·
ASCII/PLATO
COMM
I
WESTERN ELECTRIC
212A DATAPHONE
CABLE PROVIDED
WITH TELEPHONE
MULTIBUTTON TELEPHONE
WITH EXCLUSION FUNCTION
03910-2
_ _ _ _ _ _DIRECT CONNECTED INTERNAL MODEM _ _ _ _ __
AND DATAPHONE
END WITHOUT PLUG. CONNECT RED WIRE TO DATA
RING (DR) AND GREEN WIR. E TO DATA TIP(DT). LEAVE
YELLOW AND BLACK WIRES DISCONNECTED.
MULTIBUTTON
TELEPHONE WITH
EXCLUSION FUNCTION
(
CABLE
51917911
r-"--..a......-----''--a.....,
CN701-A
ACOUSTIC
COUPLER
**
~
REAR-PANEL CONNECTORS
LINE
CABLE
*
TERMINAL
ASCII/PLATO
COMM
I
WESTERN ELECTRIC
212A DATAPHONE
'---~'-- TELEPHONE
\
CABLE PROVIDED
WITH TELEPHONE
WALL BOX
03910-5
_ _ _ _ _ _ _COUPLED 'INTERNAL MODEM
AND DATAPHONE
----------
.. 3.2-mIl0.5-ft) MODEM CABLE OR EQUIVALENT
CAB1.E uP TO 15 m 150ft) LONG
Figure 3-9.
62940007 E
...
4.3-m 114-fl) CABLE PROVIDED WITH INTERNAL MODEM
Communications Via Internal/External Modem
(Sheet 2 of 2)
3-15
Communications Via Long-Line Receiver/Driver
The communication arrangements that use the long-line
receiver/driver are shown in figure 3-10. Connect the terminal
with the cable that came with the associated equipment. If the
cable has been previously used, remove any jumpers that may be
installed in the connector of the cable. The effective pin
assignments at the terminal with this type of communications is
as follows:
ASCII/PLATO COMM Connector
Pin
1
21
22
23
24
Signal
Protective Ground
Long Line Transmit
Long Line Transmit Return
Long Line Receive
Long Line Receive Return
SETTING INTERNAL SWITCHES
Before proceeding, obtain from the customer the requirements for
the network subscription. This information gives the
communication data rate and network controlware file that the
internal switches are set for.
To set the switches, do the following:
CAUTION
Do not use a "lead" pencil to set
rocker switches. Graphite dust from
the pencil can cause a switch
malfunction.
1. Refer to decal inside hood for switch positions and set
S2 and SS selection switches per table 3-1.
3-16
62940007
4-CONDUCTOR, 15-m(50-ftl CABLE PROVIDED WITH TERMINAL
MULTIPLEXER, NO JUMPERS ARE TO BE INSTALLED AT TERMINAL END.
TERMINAL
t----------,)
}---------,
TERMINAL
MULTIPLEXER
I
}-----.--,
I
I
I
ASCII/PLATO
COMM
]-, : l:
]----,
........---"IL"'--...
,....-_ _..,
DEDICATED
TELEPHONE
LINE
~"""---'
I
I
I
I
I
I
I
R'-E-A-R---P-A-N-E-L-C-O-N-N-E-CT-OR
I
L __ }
I
L ____
L_ .:-..:--=-: .:-_-:
MODEM
"-
TOOTHER
TERMINALS
----'
03910-4
- - - - - - - - - MULTIPLEXER - - - - - - - - - - - - -
*
4 -CONDUCTOR CABLE, UP TO 3000 m
(10000 ttl LONG, PROVIDED WITH PLATO SITE CONTROLLER.
NO JUMPERS ARE TO BE INSTALLED AT TERMINAL EN).
PLATO SITE
CONTROLLER
TERMINAL
r------
I
I
I
I LONG-LINE
I INTERFACE
I
:
r---..,.---, ...&._'--..JVI/I,---......
,
J- -
J-.,
-
-,
I
I
ASCII/ PLATO
COMM
I
I ::
I,
DEDICATED
TELEPHONE
LINE
-
}- _ ,
I
I
,
"R'-E-A-R---P-A-N-E-L-C-O-N-N-E-C-TO-R
L
_
I ___
L--}TO
OTHER
TERMINALS
L _____
0'910-4
DIRECT CONNECTION
WITH SITE -CONTROLLER
* MAXIMUM LENGTH
FOR DATA RATES NOT EXCEEDING 1200 BPS
Figure 3-10.
62940007
Communications Via Long-Line Receiver/Driver
3-17
TABLE 3-1.
SETTING S2 AND S5 SELECTION SWITCHES
I
PLATO NETWORK COMMUNICATIONS
VIA
VIA
VIA
INTERNAL
EXTERNAL
LONG
MODEM
MODEM
LINE
I
ASCII NETWORK
I
COMMUNICATIONS
I VIA EXTERNAL MODEM
T
S2-1
Set to
CONSTANT
For domestic Setting is
units, set
irrelevant
to CONSTANT.
For international
units,
setting
depends on
communications
equipment
(normally
SWITCHED) •
S2-2
Setting is
irrelevant
Setting is
irrelevant
S2-3,
-4,-5
Set according to subscription
requirements (normally 120
bps)
S2-6
Setting ts
irrelevant
Setting is
irrelevant
S2-7
Setting is
irrelevant
If modem
Setting is
uses secon- irrelevant
dary channel
for transmission
(normal for
international units),
set to
SECONDARY;
if not, set
to PRIMARY
3-18
I
For domestic units,
set to CONSTANT.
For international
units, setting
depends on communications equipment
(normally SWITCHED).
I
ISetting is ISetting is irrelelirrelevant Ivant
I
I
ISet accord- ISet accord-I Setting is irreleling to sub- ling to sub- vant
I scription
I scription
I requireIrequireIments (nor- ments
Imally 1200
(normally
bps for
1200 bps)
domestic
units,
75 bps for
international units)
Setting is
irrelevant
Setting is irrelevant
If modem uses secondary channel for
transmission (normal
for international
units), set to
SECONDARY; if not,
set to PRIMARY
62940007 B
TABLE 3-1.
SETTING S2 AND S5 SELECTION SWITCHES (CONTD)
PLATO NETWORK COMMUNICATIONS
VIA
I
VIA
I
VIA
INTERNAL
EXTERNAL
LONG
MODEM
MODEM
LINE
SWITCH
ASCII NETWORK
COMMUNICATIONS
VIA EXTERNAL MODEM
S2-8
Set to NO
Set to NO
Set to NO
Set to NO
S2-9
Set to YES
Set to YES
Set to YES
Set to YES
S2-l0
Set
CC629-A/B
units with
RAM expansion installed and
CC629-C/D
units to
32K. Set
CC629-A/B
units with
16K RAM to
16K.
Set
CC629-A/B
units with
RAM expansion installed and
CC629-C/D
units to
32K. Set
CC629-A/B
units with
16K RAM to
16K.
Set
CC629-A/B
units with
RAM expansion installed and
CC629.-C/D
units to
32K. Set
CC629-A/B
units with
16K RAM to
16K.
Set CC629-A/B units
with RAM expansion
installed and
CC629-C/D units to
32K. Set CC629-A/B
units with 16K RAM
to 16K.
S5-l,
-2
Set for file
to be used
in subscription.
If this involves more
than one,
set for
\ file that
will normally be
used.
Set for file
to be used
in subscription.
If this in
volves more
than one,
set for
file that
will normally be
used.
Set for
file to be
used in
subscription. If
this involves
more than
one, set
for file
that will
normally
be ·used.
Setting is irrelevant
S5-3,
-4
Setting is
irrelevant
Setting is
irrelevant
Setting is
irrelevant
Set for file that
will be used in subscription with Data
Services network.
If this involves
more than one, set
for file that will
normally be used.
If not subscribed .tol
Data Services network, setting is
irrelevant.
S5-5
Setting is
irrelevant
Setting is
irrelevant
Setting is
irrelevant
Setting is irrelevant
62940007 E
3-19
TABLE 3-1.
I
PLATO NETWORK COMMUNICATIONS
VIA
VIA
VIA
INTERNAL
EXTERNAL
LONG
MODEM
MODEM
LINE
SWITCH
S5-6,
7 ,-8
1-
SETTING S2 AND S5 SELECTION SWITCHES (CONTD)
Setting is
irrelevant
Setting is
irrelevant
ASCII NETWORK
COMMUNICATIONS
VIA EXTERNAL MODEM
ISetting is ISet according to
irrelevant
subscription
requir~ments
of Data
Services network.
If not subscribed
to Data Services
network, set for
requirements of
applicable network.
2. If no ROM/EROM expansion option has been installed,
verify that all four ROM SEL switches are set to ROM NOT
PRESENT position as shown on decal inside hood.
3. Verify that Communications Loopback switch is set to NORM
position (figure 3-11).
. COMMUNICATIONS
LOOPBACK SWITCH:
LEFT= NORMAL OR OFF
RIGHT: TEST OR ON
(FOR SECONDARY CHANNEL ONLY)
I
I
VIDEO
BOARD
03337-1
Figure 3-11.
3-20
Communications Loopback Switch
62940007 E
CHECKOUT
Do the following to check out the terminal and make ready for
use.
If any difficulties are encountered, refer to the SAMs in
section 6.
NOTE
Apply power to terminal per next
step before powering on connected
peripherals
1. Connect power cord to site outlet and press ON/OFF
circuit breaker to ON.
Depending on random settings of
switches behind protective door, this either starts an
attempted controlware load or a running of resident
diagnostics, and after approximately 45 seconds, a
message or pattern appears on the screen.
2. Disregard message or pattern and adjust BRIGHTNESS
control for proper intensity.
3. Run all resident diagnostics per procedure 2 in section 6
and check alignment pattern for acceptable display
quality.
If required, refer to procedure 22 for
definition of an acceptable display.
CAUTION
Do not use a "lead" pencil to set
rocker switches.
Graphite dust from
pencil can cause a switch
malfunction.
4. Refer to decal behind protective door and set the
switches listed in table 3-2.
The three LOAD SOURCE
switches not listed in the table are set later per the
applicable startup procedure mentioned in step 5.
62940007 B
3-21
TABLE 3-2.
SWITCH
SETTING SELECTION SWITCHES BEHIND DOOR
PLATO
SUBSCRIBED NETWORK
DATA SERVICES
NETWORK PARITY Setting is
NO/YES (10) irrelevant
OTHER
If network
uses parity
in communications, set to
YESJ if not,
set to NO
I
NETWORK 000/
EVEN (9)
Setting is
irrelevant
If preceding
1 isted switch
was set to
YES, set this
switch for
type of
parity used.
Otherwise,
setting is
irrelevant
I
NETWORK HALF/
FULL (8)
Setting is
irrelevant
If timeshare or
graphics mode is to
be run on subscription, set to HALF
If network
echoes data
back, set
to FULL, if
not, set to
HALF
Reserved (7)
See applications manual
See applications
manual
See applications manual
LOUD/SOFT (6)
Set for
desired level
of audio
alarm
Set for desired level Set for deof audio alarm
sired level
of audio
alarm
SKIP/KB&TP (5) Setting is
lirrelevant leffects running of
resident diagnostic-s during
maintenance
SKIP/TEST (4)
3-Z2
\
Set to SKIP
(disables
resident
diagnostics)
Setting is
irrelevant - effects
running of resident
diagnostics during
maintenance
Setting is
irrelevant effects running of
resident
diagnostics
tduring
maintenance
Set to SKIP. (disables Set to SKIP
resident diagnostics) (disables
resident
diagnostics)
62940007 E
5. If site is subscribed to PLATO network or Data Services
network, refer to terminal operator's guide (preface
lists publication number) and do the steps that follow.
If neither of these networks are subscribed to, refer to
the effective user's guide manual for startup procedure
and any system diagnostic that may apply.
a. Follow startup procedure in operator's guide and load
controlware for PLATO mode from host computer.
b. Refer to troubleshooting portion of operator's guide
and run quicklook portion of PLATO system diagnostic
(DIAG).
6. Replace hood and fasten with two screws.
62940007 B
3-23
THEORY OF OPERATION
4
This section contains a functional description of the major modules
of the terminal (figure 4-1). This includes the:
o
o
o
o
o
o
o
o
Controller board
Video board
Optional' modem/DAA board (PLATO network use only)
Operator panel
Touchpanel
Keyboard
Display monitor
Power supply board
TOUCHPANEL
TELEPHONE
LINE
INTERFACE
ASCII/PLATO
COMM INTERFACE
IKEYBOARD
1
[ ::--..1..- -:
[ Il J- ~ ~
----I
I MODEM I
I (OPTION) I
L_ -
-
TOUCHPANEL INTERFACE
OGIC
L
R.. • ... ~ ASCII 4f.
KEYBOARD INTERFACE
LOGIC
I
..
SERIAL
I/O
PARALLEL
I/O
COMM
DATA RATE
PLATO
GENERATION
... j.o"COMM ... ~ SERIAL
INTERFACE
F
LOGIC
•4~SERIAL I/O 4j.
~ X
[ --
1
I
[
PARALLEL
I/O LOGIC
COMMON INTERFACE LOGIC
MEMORY
INTERFACE
LOGIC
n
zao
t
MICROPROCESSOR
JOPERATOR
PANEL
MEMORY CONTROL LOGIC
16K
4K
16K
16K
EROM EROM RAM RAM
(OPT)
(OPT)
COMPOSITE
VIDEO
-- -
[
I
AC ENTRY
32K RAM VIDEO
REFRESH LOGIC
*
----
POWER SUPPLY
t)
DISPLAY MONITOR
62940007 E
i""
r
I
'I STANDARD ON CC629-C/D
Figure 4-1.
k~
-
03333 2
Terminal Block Diagram
4-1
CONTROLLER BOARD
This board contains a Z80A microprocessor that controls the
operation of the terminal by executing program instructions.
Upon a power on or reset, these instructions are provided by the
resident diagnostic/loader program. This continues until controlware is successfully loaded, or if a reset occurred with
controlware already loaded, until all necessary reloading is
completed. The diagnostic/loader program then relinquishes
control and the microprocessor executes the controlware
instructions.
The other circuits on the controller board support the microprocessor by handling communications, accumulating status information, monitoring interrupt conditions, and interfacing the
microprocessor with other modules. Through input/output
exchanges with these circuits, the microprocessor controls:
•
Read/write transfers with memory on video board
•
Communications with the connected network, attached
peripherals, and a serial-communication device that may
be attached
•
Keyboard and touchpanel entries
•
Lighting of LEDs on operator panel*
•
Input of external and internal switch settings
•
Input of the factory-set identification code of the
terminal
The circuits on the board that handle network communications are
divided in two groups, the PLATO communication circuits and the
ASCII communication circuits. The group of communication
circuits and interface used in network communications are
established by program instructions. For example, when controlware is to be loaded from a host network, the diagnostic/loader
program determines which interface and communication circuits
are applicable by scanning each interface that may be connected
to the network. An active Carrier Detect signal on the internal
modem interface or external modem interface, or receipt of PLATO
network NOP codes (21-bit blank words with only a start bit) on
the long-line interface stops the scanning and selects that
interface. In the case this is either the internal
*During resident diagnostics, the microprocessor controls all
LEDs on operator panel. During other operations, it controls
only the DTR and ERR LEDs, and the other four LEDs are driven by .
terminal/modem interchange.
4-2
62940007 B
modem or external modem interface, the program determines the
applicable communication circuits by distinguishing if the idle
codes received through the interface are PLATO network Nap codes
or ASCII CR, LF, or slash (/) codes from the Data Services
network.
The following paragraphs further describe the major circuits on
the board:
the microprocessor, PLATO communication circuits,
ASCII communication circuits, serial interface circuits, and the
parallel interface circuits.
MICROPROCESSOR
The controlling microprocessor chip contains the necessary logic
to decode and execute 158 different instructions.
In addition,
it automatically generates refresh cycles to rejuvenate the
dynamic program RAM on the video board.
In a refresh cycle, the
microprocessor gates a count from 0 to 12710 on its address
bus and issues a refresh pulse which strobes that internal row
in each of the RAM chips. One of these cycles occur following
each op-code fetch, while the instruction is being decoded.
Timing for the microprocessor is provided by a 4MHz clock pulse
from the video board, which establishes a 250 nanosecond state
time (reference time for operating speed). All instructions are
performed by stepping through a specific series of operations
applicable to a given instruction. Each operation, such as an
op-code fetch or an instructed input/output, takes from three to
six state times, and when required, additional state times are
inserted to synchronize the microprocessor with the slower
circuit or device. The additional state times (termed wait
states) are initiated by associated circuits, and each wait
state delays execution time and RAM refresh cycles accordingly.
The fetching of instructions and the input/output involved in
their execution is done over an 8-bit bidirectional data bus.
The memory origin/destination or purpose of each data-bus
exchange is dictated by the output that the microprocessor
places on its l6-bit address bus.
In addition, the microprocessor issues accompanying control signals that specify the direction of the exchange and whether memory or other type circuit is
being addressed.
The next paragraphs describe the read/write transfers and input/
output functions that are done via this interchange.
62940007
4-3
Read/Write Memory Transfers
The read/write memory transfers performed by the microprocessor
include instruction fetching and instructed reads and writes.
Instruction Fetching
The microprocessor automatically fetches (reads) a new instruction from memory on the video board after executing the previous
one. In portions of a program having no jump instructions,
op-code fetches occur from sequential address locations.
I
The address range dedicated exclusively for program storage is
from 0000 to 7FFF16. Between 0000 to OFFF16 and 4000 to 7FFF16
address assignments are shared by both ROM and RAM (4000 to 7FFF16
applies to memory expansion options if installed in CC629-A/B
units and to the standard additional 16K RAM in CC629-C/D units).
o
A power on or reset automatically selects ROM and causes
the microprocessor to do an op-code fetch from "address
000016. This leads the microprocessor into the resident
diagnostic/loader program contained in addresses 0000
through OFFF1 6 of ROM.
o
When the resident program has control, momentary deselection of ROM to do a read with RAM is accomplished via an
instruction sequence that uses a ROM read-through function. This function is described later in output 05 16
under Input/Output Functions.
o
When the resident program relinquishes control to the
controlware loaded in RAM, an instruction selecting RAM
is made via output 0016 as described under Input/Output
Functions.
Each op-code fetch from either ROM or
state.
RAM
requires one wait
Instructed Reads and Writes
When doing a memory read/write, the microprocessor reads/writes
from/to the memory address that is specified in the instruction
being executed. With a memory write, the executed instruction
also specifies the information that is written.
When a read or write is done in the display memory, from one to
six wait states occur during the operation. This results
because access to that memory is shared with the display refresh
circuits on the video board.
4-4
62940007
E
Input/Output Functions
The instructed input/output exchanges of the microprocessor control all operations of the terminal except the refresh of displayed data. These exchanges transfer data, control, and status
information over the data bus. The purpose of each exchange is
identified by the code on the address bus and the specified
direction in which the exchange is to occur.
Table 4-1 lists the input/output functions and the following
paragraphs describe the functions in numerical order.
TABLE 4-1 INPUT/OUTPUT FUNCTIONS
ADDRESS BUS
76543210
HEX
CODE*
x xlo 010 0 0 0
00
I
o
I
o
0
0
1
1
00
01
01
02
02
03
03
0 100
010 0
011 0 1
010 1
0 1 1 0
04
04
05
05
06
X X 0 0 0 110
06
o
X X 0 0 0 III
X X 0 0 0 III
XXOOlXXX'
X X 0 1 X X 0 0
07
07
o
I
I
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
010
010
010
010
010
010
010
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
0
0
Ix
X
X
X
X
X
X
X
X
X 0
X 0
X 0
X 0
X\O
xlO
xlO
XiI
XiI
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
1
1
1 X X 0 0
1 X X 0 1
1 X X 0 1
1 X X 1 0
1 X X 1 0
1 X XII
1 X XII
Y Y Y YIY
Y Y Y YIY
I
o
I
o
I
o
I
o
I
I
10
I
I
10
o
08
11
I
11
12
12
13
13
2Y,3Y
2Y,3Y
o
I
o
I
o
I
o
Read maintenance and load
switches
Load maintenance register
Read keyboard data
Load PLATO transmitter lower bits
Read touchpanel data
Load PLATO transmitter upper bits
Read lower ID
Bulk write/erase and
video enable/disable
Read upper ID
Load interrupt mask
Read internal switches
Miscellaneous control
Read communication
switches and status
Load ASCII communication
data rates
Read controller status
Load serial I/O data rate
Read PLATO communication data
Read ASCII communication
data
Load ASCII communication data
Read ASCII communication status
Load ASCII communication control
Read serial I/O data
Load serial I/O data
Read serial I/O status
Load serial I/O control
Input from parallel channel
Output to parallel channel
NOTES: X = Either 1 or 0
Y = External device address
*The hexadecimal codes listed are obtained by making X
62940007
=
4-5
0
Input 0016 - Read Maintenance and Load Switches
This function inputs an 8-bit word to the microprocessor that
indicates the settings of the switches listed in table 4-2.
TABLE 4-2.
DATA BUS WORD FOR INPUT 00 16
1 - - - - - - - - ·---
-T----
SWITCH
BIT
SETTING INDICATION
I
I
r----------.------
=
0
=
NORM, 1
0
=
INT, 1
LOAD SOURCE HOST/LOCAL
0
HOST, 1
=
LOCAL
3
SKIP/TEST
0
=
=
SKIP, 1
=
TEST
4
SKIP/KB
0
=
SKIP, 1
=
KB
5
Internal S2-10
(Bytes of Program Memory)
0
=
16K, 1
6
Internal S2-9
(Touchpanel Present)
0
=
NO, 1
7
Internal S2-8
(Loop on Diagnostic Tests)
0
= NO,
0
LOAD SOURCE NORM/SEL
1
LOAD SOURCE INT/EXT
2
&
TP
I
I
I
1
=
=
SEL
EXT
&
TP
32K
=
YES
=
YES
I
I
I
I
I
I
I
r
I
._---------- I
Output 0016 - Load Maintenance Register
This function loads the 8-bit output of the microprocessor into
a holding register.
Table 4-3 defines the meaning of the bits.
4-6
62940007 B
TABLE 4-3.
DATA BUS WORD FOR OUTPUT 00 16
BIT
MEANING
o
This bit drives ERR (Error) LED on operator panel.
Loading a 0 lights the LED. During a power on or reset,
the bit is a O.
1
During resident diagnostics, this bit drives XMT (Transmit Data) LED on operator panel. Loading a 0 lights the
LED. During other operations, the LED is driven by
the respective terminal/modern interface signal. During
a power on or reset, the bit is a O.
2
Same operation as bit 1, but drives Rev ( Receive Data)
LED.
3
Same operation as bit 1, but drives RTS ( Request to
Send) LED.
4
Same operation as bit 1, but drives DSR (Data Set
Ready) LED.
5
Same operation as bit 0, but drives DTR (Data Terminal
Ready) LED.
6
This bit controls the diagnostic features of the terminal. Loading a 0 conditions the terminal for~esident
diagnostics. During a power on or reset, the cit is
a o.
7
This bit signifies the type memory selected by the
program. Loading a 0 selects ROMi loading a 1 selects
RAM. During a power on or reset, the bit is a O.
Input 0116 - Read Keyboard Data
Input 0116 transfers 8 bits of data from the keyboard interface to the microprocessor. This data is only valid when a
keyboard data-ready status/interrupt is present.
62940007
4-7
Output 0116 - Load PLATO Transmitter Lower Bits
Output 011-6 loads 5 bits of data from the microprocessor in a
l3-bit ShIft register that serializes data to be sent to the
PLATO network. These bits are the parity bit (always even) and
the 4 least significant bits of the word. The other part of the
word is transferred via output 0216, and no transmission
occurs until those upper bits are loaded.
Output 0116 and output 0216 are only performed when the PLATO
transmitter is inactive, that is, a PLATO communications-request
status/interrupt is present.
Input 0216 -Read Touchpanel Data
Input 0216 transfers a word from the touchpanel interface to the
microprocessor. The format of this word is shown in figure 4-2.
The word gives the X/Y coordinates where the touch occurred on
the touchpanel.
Each coordinate may range from 00002 to 11112
(F16). The X columns sequentially run from 0 to F16, left to
right. The Y rows sequentially run from 0 to F16, bottom to top.
This data is only valid when a touchpanel data-ready status/
interrupt-is present.
Output 0216 - Load PLATO Transmitter Upper Bits
Output 0216 loads 6 bits of data from the microprocessor in
the PLATO transmit register. These bits are the 6 most significant bits of th~ word to be transmitted. Their loading initiates transmission and drops the PLATO communications-request
status/interrupt.
I
DATA BIT
----r--7-r-6-r-S-r4--r-3I" 2
r 1 T-o-I
I-TOtJCHPANELDATA-rxa-rX4"-rxrr-Xrr-Y8-n:rTY2 I Yl
r---
I
I
Figure 4-2.
4-8
X COLUMN
I
Y ROW
Data Bus Word for Input 0216
62940007 B
Input 03 16 - Read Lower ID
This function transfers the setting of the lower 8 bits of the
ID shunts to the microprocessor. These 16 shunts on the controller board are factory set to a unique code (and sealed) for
each terminal.
Output 0316 - Bulk Write/Erase and Video Enable/Disable
The operation of this function is dependent on data bits 0, 1,
and 2 as summarized in table 4-4. Data bits 2 through 7 are
ignored during this function.
TABLE 4-4.
BULK WRITE/ERASE AND VIDEO ENABLE/DISABLE FUNCTION
DATA BITS
X
2
1
0
0
0
1
1
0
1
0
1
1
1
1
=
OPERATION
I
I
I
I
I
I
I
I
I
I
I
I
I
I
0
X
Disable video
X
Enable video
0
Bulk erase and disable video
1
Bulk write and disable video
0
Bulk erase and enable video
1
Bulk write and enable video
Ei ther 1 or 0
This function with data bits land 2 both a 0 places the terminal in a nondisplay mode without affecting display memory contents.
In this mode, the video signal to the monitor and to the
VIDEO OUT interface is forced to the blanking state. The
intended use of this mode is to allow the display memory to be
used for extended program memory.
This function with data bit 2 a 0 and data bit 1 a 1 reenables
video to the monitor and to the VIDEO OUT interface (if previously disabled) without affecting display memory contents.
62940007
4-9
This function with data bit 2 a 1 initiates a hardware write or
erase of the complete display memory.
The state of data bit 0
determines whether all Is are written, giving a completely illuminated display (when video is not disabled), or alIOs are
written, giving a completely black display.
Following completion of the bulk write/erase operation, the state of data bit 1
determines whether video is disabled or enabled.
Input 0416 - Read Upper ID
This function does the same operation as input 03 16 except the
upper 8 bits are transferred.
Output 0416 - Load Interrupt Mask
Output 0416 loads the 8 bits from the microprocessor into the
interrupt mask register.
Each of these eight bits is associated
with one of the interrupt conditions monitored by the mask
register.
If the associated bit in the mask register is a I,
the incoming interrupt is allowed to pass and reach the microprocessor, otherwise it is blocked.
Each interrupt reaching the microprocessor generates an interrupt vector defining its level (interrupt trap address).
If
more than one interrupt level is active at the same time, all
except the one having the highest priority is blocked.
Table 4-5 lists the priorities, sources, data bit assignments,
and vectors of the interrupt conditions handled by the register.
TABLE 4-5.
MASKED INTERRUPT CONDITIONS
I
SOURCE
PRIORITY*
o
I
I INTERRUPT MASKI INTERRUPT VECTOR
I
(DATA BIT)
I (HEXADECIMAL CODE)
---rI
(Highest) PLATO comm-ready
status**
I
T7
1
PLATO comm-request
status**
4
2
I Keyboard data-ready
Istatus**
6
I
3
ITouchpanel data-ready
Istatus**
4
11/0 timeout status**
I
I
4-10
5
o
I
I
I
I
I
I
I
I
I
I
I
00
02
04
06
I
I
I
08
62940007 B
TABLE 4-5.
MASKED INTERRUPT CONDITIONS (CONTD)
I
PRIORITY* I
------,
I
I INTERRUPT MASKI INTERRUPT VECTOR I
I (DATA BIT) I (HEXADECIMAL CODE) I
SOURCE
I
I
1
-r------------r---------r----------5
Short interval - pro-I
vides an interrupt
I
every 833 microsec- I
onds when not masked I
6
External interrupt - I
peripheral connected I
to PARALLEL interface I
has data to exchange I
7 (Lowest)
Long interval - provides an interrupt
every 17.5 ms when
not masked
1
I
1
OA
3
OC
2
OE
1
I
I
I
I
I
I
I
------_._----_._-*Interrupts from a Z80A-SIO/2 communications controller chip
on controller board have higher priority than those listed.
The communications controller chip handles both ASCII and SERIAL
interface communications.
**Status conditions are described later under input 0716.
Input 0516 - Read Internal Switches
This function inputs an 8-bit word to the microprocessor that
indicates the settings of the S5-l through S5-8 switches on the
controller board (figure 4-2.1). The setting of S5-l is indicated by data bit 0, S5-2 by data bit 1, S5-3 by data bit 2,
etc. The state of the bits indicate switch positions, with 0
indicating an ON position and 1 indicating an OFF position. The
state of bit 4 representing S5-5 has no significance.
~
RECEIVE/TRANSMIT RATE
b
S5
m
m
m
m
DEFAULT LOAD FILE NUMBER
{ON
OFF .....
FOR DATA SERVICES NETWORK: - - - - - - - r2"1
...
(SEE TABLE AT RIGHT)
ON ~ OFF...
... ...
r;;-"'1
BPS
BPS
BPS
BPS
INPUT
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
...
BPS
300/
300
600/
600
BPS
1200/ 2400/ 1200/ EXT
1200 2400
75 CLOCK
LOAD FILE NUMBER
...
~ OFF - - "::... -:::: - ...
OFF
... - - - - - -
OJ
150/
150
BPS
DEFAULT DATA RATE FOR
{ON
OFF - - - - - ASCII COMMUNICATION NETWORK: - - - - - - ON
OFF - - - - - (SEE TABLE AT RIGHT)
ON [ ] ] OFF _____ _
DEFAULT LOAD FILE NUMBER FOR
{ON
PLATO COMMUNICATION NETWORK: - - - - - - ON
(SEE TABLE AT RIGHT)
75/
75
0
ON
I
ON
2
3
OFF
OFF
ON
OFF
ON
OFF
03915
Figure 4-2.1
62940007 B
Significance of S5 Switches
4-11
Output 0516 - Miscellaneous Control
Output 0516 loads the output from the microprocessor into a
control register. This output implements the features listed in
table 4-6 that are further explained in the following paragraphs.
TABLE 4-6.
DATA BUS WORD FOR OUTPUT 05 16
._-----_._---
------r
DATA BITI
CONTROL DESCRIPTION
I
I
0 1 = Sound alarm, 0 = do not sound alarm
1
1
= Reset
o
I/O timeout status/interrupt,
= do not reset
= clear
2
1
=
Set hardware flag, 0
3
1
=
Select PLATO communication circuits, 0
select
= do
not
4
1
=
Select ASCII communication circuits, 0
select
= do
not
5
1 = Select internal modem interface, 0 = do not select
6
1
7
1
=
=
hardware flag
Select external modem interface, 0
Select ROM read-through, 0
= do
= do
not select
not select
Data Bit 0 (Alarm) - The output function with bit 0 set to 1
triggers a 80-ms audible tone.
If bit 0 is not set, the alarm
does not sound. The alarm timer is retriggerable and a repeat
of the output function will keep the alarm sounding.
Data Bit 1 (I/O Timeout) - This bit controls the resetting of
I/O timeout status and interrupt. A 1 resets the status and
interrupt, and a 0 leaves the status and interrupt unchanged.
Data Bit 2 (Hardware Flag) - This bit controls the state of a
flip-flop which is read by the microprocessor through an input
0716 function.
A 1 sets the flip-flop and a 0 clears it.
This flip-flop automatically sets upon a power on and is not
affected by the RESET switch. Since these two conditions force
the microprocessor to start executing at address 0000, this
flip-flop can inform the microprocessor which condition actually
occurred.
4-12
62940007 B
Data Bit 3 (PLATO Circuits) and Data Bit 4 (ASCII Circuits) These bits designate which set of communication circuits are
used in network communications. Both bits cannot be set simultaneously or selection will be indeterminate. Bit 3 set to 1
selects the PLATO circuits, which automatically occurs upon a
power on. Bit 4 set to 1 selects the ASCII circuits. The
selection made is not affected by the RESET switch.
Data Bit 5 (Internal Modem) and Data Bit 6 (External Modem) When RS-232-C/CCITT V.24/V.28 signals are selected for network
communications (determined by output 0716), these bits designate the modem interface that is used. Both bits cannot be set
simultaneously or selection will be indeterminate. Bit 5 set to
1 selects the internal modem interface, which automatically
occurs upon a power on. Bit 6 set to 1 selects the external
modem interface. The selection made is not affected by the
RESET switch.
Data Bit 7 (ROM Read-Through) - This bit set to 1 causes the
memory accesses between the end of the next op-code fetch and
the beginning of the following op-code fetch to be from RAM even
though the program being executed is in ROM. The function
automatically terminates on the second fetch following the
output 0516 which initiated it.
Input 0616 - Read Communication Switches and Status
This function inputs an 8-bit word that indicates the settings
of seven switches and the status of the Data Set Ready signal of
the SERIAL interface. Table 4-7 defines the word.
62940007 B
4-13
TABLE 4-7.
r
BITI
I
o
I
I
SWITCH
I Switch 7 on
/operator panel
/
1 / NETWORK HALF/FULL
/
2 /Interna1 S2-1
I (ASCII/PLATO Com/munications DTR)
3
I
TALK/DATA
DATA BUS WORD FOR INPUT 0616
r
SETTING INDICATION OR MEANING
Reserved for applications use.
applications manual
o = HALF, 1 = FULL
o = SWITCHED, 1 = CONSTANT
o = TALK, 1 = DATA
o = ODD, 1 = EVEN
4
NETWORK PARITY
ODD/EVEN
5
NETWORK PARITY
NO/YES
o = NO,
6
Internal S2-6
None
7
See
1
= YES
Indicates whether Data Set Ready signal
is present on SERIAL interface. 0 = not
present, 1 = present
Output 06 16 - Load ASCII Communication Data Rates
This output, in conjunction with output 1116, establishes the
receive and transmit rates used by the Z80A-SIO/2 communications
controller chip for ASCII network communications. These communications are conducted through channel A of the chip.
Table 4-8 lists the receive rate selection and table 4-9 lists
the transmit rate selection.
Data bits 0 and 1 of the output
are not used. The divide-by factor that the Z80A-SIO/2 chip
uses on channel A is controlled through output 1116. Unless
rese1ected by controlware, the resultant rates match the selection made by internal switches S5-6, -7., and -8.
4-14
62940007 F
TABLE 4-S.
DATA BITS
7
6
5
1
1
I 0
I
1
011
ASCII RECEIVE DATA RATE SELECTION
RECEIVE DATA RATE (BPS)
WHEN
ZSOA-SIO/2 CLOCK MODE IS:
DIVIDE BY 161DIVIDE BY 321DIVIDE BY 64
I
19 200
9 600
4 SOO
9 600
4 SOO
2 400
4 SOO
2 400
1 200
I
1
010
I
o
111
2 400
1 200
600
o
1
1 200
600
300
o
I
I 0
I
011
600
300
150
o
010
300
150
75
1
I
I 1
I
I
1
EXT RCV CLK* EXT RCV CLK* EXT RCV CLK*
16
32
64
*Externa1 receive clock must be input to ASCII/
PLATO COMM connector (RJl-17) using an RS-232-C
compatible signal.
Note:
62940007
The ZSOA-SIO/2 communications controller may
also be operated in a divide-by-l mode with
an external receive clock providing the
external clock and receive data are bit
synchronized.
4-15
TABLE 4-9.
ASCII TRANSMIT DATA RATE SELECTION
DATA BITS
TRANSMIT DATA RATES (BPS)
WHEN
Z80A-SIO/2 CLOCK MODE IS:
DIVIDE BY l61DIVIDE BY 321DIVIDE BY 64
19 200
9 600
4 800
t
1
4 800
2 400
1
9 600
I
4
3
2
1
1
0
o
1
o
o
1
1
1
1 1
1
1 1
I
I 0
I
I 0
I
1
1 0
J
1 0
o
,
I
I
I
I
I
I
4 800
2 400
1 200
J
o
1
o
o
I
I
I
600
300
1
I
I
1
I
1
l
I
1
1
,
2 400
1 200
1 200
600
600
300
300
150
150
75
I
1
1 1
1
I
1
1
I
IEXT XMT CLK*IEXT XMT CLK* EXT XMT CLK*
1~~~1-=6~""";' I
32
64
t
1 *External transmit clock must be input to ASCII/
1
1
PLATO COMM connector (RJl-15) using an RS-232-C
compatible signal.
1
1 Note:
1
The Z80A-SIO/2 communications controller may
also be operated in a divide-by-l mode with
an external transmit clock.
1
1__________________________________________________
Input 07 16 - Read Controller Status
Input 0716 transfers status information from different interfaces to the microprocessor. Table 4-10 defines this word.
4-16
62940007
TABLE 4-10.
DATA BUS WORD FOR INPUT 0716
-1---------------·------------BIT
MEANING
o
PLATO communication-ready status - when set to 1, indicates
that PLATO receiver has clocked in 7 bits of serial data
and is ready to transfer them to microprocessor.
1
Hardware flag - indicates state of hardware flag flip-flop
which sets upon power on and is controlled by microprocessor through output 0516.
2
PLATO communication-request status - when set to 1, indicates that PLATO transmitter is inactive and can accept
data to transmit.
3
Keyboard data-ready status - this bit set indicates that
keyboard interface detected a key depression and is holding
the code to transfer to microprocessor.
4
Touchpanel data-ready status - when set to 1, indicates
that touchpanel interface has detected a touch and is
holding X/Y-coordinate data.
1
I
I 5
I
I
I
I 6
I
I
I 7
I
I/O timeout status - this bit set indicates that an I/O
exchange with an external device on PARALLEL interface was
not completed in the allotted time (54 microseconds +20%).
RESET switch - this bit is a 0 while RESET switch is
pressed.
Bulk busy - during a bulk write/erase operation, this bit
goes to a 1.
I
Output 0716 - Load Serial I/O Data Rate
Output 0716 does the following:
•
The state of data bit 0 determines which type of interface signals are used
network communications. With
the bit set to 1, long-line signals are selected, and
with the bit a 0, RS-232-C/CCITT V.24/V.28 signals are
selected.
•
Data bits 1, 2, 3, and 4 are not used.
in
62940007 B
4-17
•
Data bits 5, 6, and 7, in conjunction with output 1316,
establishes the receive/transmit rate that the Z80A-SIO/2
chip uses for SERIAL interface communications. These
communications are conducted through channel B of the
chip. The divide-by-factor used on channel B is
controlled through output 1316. Table 4-11 lists the
rate selection.
TABLE 4-11.
SERIAL INTERFACE DATA RATE SELECTION
-_._-----_._-DATA BITS
4
3
2
1
1
1
1
1
0
1
0
1
1
0
0
0
1
1
0
1
0
0
0
1
0
0
0
TRANSMIT DATA RATES (BPS)
AND
Z80A-SIO/2 CLOCK MODE
DIVIDE BY16~IVIDE-BY 3~DIVIDE BY 64
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
19 200
------- - - - - - - 9 600
4 800
9 600
4 800
2 400
4 800
2 400
1 200
2 400
1 200
600
1 200
600
300
600
300
150
300
150
75
150
75
37.5
-----------,--Input 0816 - Read PLATO Communication Data
Input 0816 transfers data from the PLATO receiver to the
microprocessor. This data is only valid when a PLATO
communication-ready status/interrupt is present. Three of these
transfers are required to input the entire 21-bit word received
from the PLATO network. The format of the transfer is described
later under PLATO Communication Circuits.
Input 1016 - Read ASCII Communication Data
This function inputs data received from the ASCII network.
ASCII receiver is in channel A of the Z80-SIO/2 chip.
4-18
The
62940007 B
Output 1016 - Load ASCII Communication Data
Output 1019 loads 8 bits of data from the microprocessor in a
buffer reglster for transmission to the ASCII network.
This
register and the register that serializes the transmit data are
in channel A of the Z80-SIO/2 chip.
Input 1116 - Read ASCII Communication Status
Input 1116 transfers 8 bits of status from channel A of the
Z80-SIO/2 chip to the microprocessor. There are two registers
in channel A that indicate the status of ASCII communications,
status register 0 and status register 1.
Each is separately
accessed by an output 1116 with data bits 2, 1, and 0 set to
0002 or 0012 respectively, followed by an input 1116'
Output 1116 - Load ASCII Communication Control
This function loads 8 bits of information into one of the seven
control registers in channel A of the Z80-SIO/2 chip. This is
in addition to the use of output 1116 with input 1116 to
access status registers.
The control registers of channel A are numbered 0 and 1 and 3
through 7.
Except for register 0, two outputs are required to
load a control register. The first output of 1116 contains
the binary register number in data bits 2, 1, and O. The second
output 1116 transfers the control word that is to be loaded in
the selected register. These control words dictate the word
format and divide-by factor for channel A.
Input 1216 - Read Serial I/O Data
Input 1216 transfers the data received from the SERIAL interface.
The receiver for the SERIAL interface is in channel B of
the Z80-SIO/2 chip.
Output 1216 - Load Serial I/O Data
Output 1216 loads 8 bits of data into a buffer register in
channel B of the Z80-SIO/2 chip for transmission on the SERIAL
interface.
62940007 B
4-19
Input 1316 - Read Serial I/O Status
This function preceded by an output l31 Q accesses status from
channel B of the Z80-SIO/2 the same as 1nput 1116 accesses
status from channel A. Channel B, however, contains one more
status register than channel A. This register is numbered
status register 2.
Output 1316 - Load Serial I/O Control
This function loads control information in channel B of the
Z80-SIO/2 the same as output 1116 loads channel A. Channel B,
however, contains eight control registers that are numbered 0
through 7.
Input 2Y/3Y16 - Input from Parallel Channel
This input function is denoted by address bus bit 5 being set to
1. The function transfers information from a peripheral device
to the microprocessor via the PARALLEL interface. This exchange
is described later under Parallel Interface Circuits.
Output 2Y/3Y16 - Output to Parallel Channel
This function results in an exchange like input 2Y/3Y16' but
in the opposite direction.
PLATO COMMUNICATION CIRCUITS
The following paragraphs describe the PLATO receiver and PLATO
transmi tter.
PLATO Receiver
The PLATO receiver operates asynchronously at 1200 bps and
assembles the 21-bit words from the PLATO network for transfer
to the microprocessor. The receiver begins operation when an
4-20
62940007
output 0516 from the microprocessor selects the PLATO communication circuits. This routes data from the selected interface
(internal modem, external modem, or long line) to the receiver
for word detection and word assembly.
Word Detection
The receiver detects words by monitoring the serial data input
of the selected interface for a start bit (figure 4-3). With
the internal modem or external modem interfaces, the respective
Data Set Ready and Carrier Detect signals must be on for monitoring to occur. When the receiver detects a start bit, that
and the following 20 bits are clocked in a 7-bit shift register
for word assembly.
P
A
S
R
T
A
R
T
d
..
..
SHIFT DIRECTION
I
T
Y
20BITS
IWORD=21 B I T S - - - - - - - - - · - - - - - t
NOMINAL 833 JJS BIT DURATION
*NONCONVENTIONAL BIT POLARITY
Figure 4-3.
03336-4
PLATO Receive Word Format
Word Assembly
Upon detecting a start bit, the receiver clocks the incoming
bits in the 7-bit shift register until the register is full.
Then the 7 bits in the register are parallel transferred to a
holding register and the PLATO communication-ready status/
interrupt is set. While the microprocessor inputs the contents
in the holding register through an input 0816, the next 7 bits
are clocked in the shift register and the process is repeated.
Three input 0816 transfers are required to input a complete
word (figure 4-4).
Data bit 7 of the first byte is set to a 1
when transferred, and then cleared to a 0 in bytes 2 and 3.
Parity of words is checked by the resident loader or loaded controlware, not the receiver.
62940007 B
4-21
INCOMING 21-81T WORD
S 19 18 17 16 15 14 13 12 II
SE
DATA
8US
T
7
10 09 08 07 06 05 04 03 02 01 00
S ERIAL
IN
S 19 18 17 16 15 14
6
5
4 3 2
1 0
FIRST BYTE
DATA
BUS
CL
OR
13 12 II 10 09 08 07
7 6
5
4
:3 2
I
0
SECOND BYTE
DATA
BUS
CL
OR
06 05 04 03 02 01 00
7 6 5 4
:3 2
THIRD BYTE
Figure 4-4.
I
0
03338-1
Receive PLATO Word Transfer
PLATO Transmitter
Like the PLATO receiver, the PLATO transmitter is enabled and
interconnected with the selected interface when an output 0516
selects the PLATO communication circuits. The setting of internal switches S2-3, -4, and -5 determines whether the transmitter
operates at 75, 120, or 1200 bps or is run by an external transmit clock on pin 15 of the ASCII/PLATO COMM connector. Operations include word transfer/serialization and word formatting.
Word Transfer/Serialization
Each PLATO transmit word requires two output transfers by the
microprocessor, an output 0116 that loads the lower 5 bits in
a shift register, and an output 0216 that loads the upper
6 bits in a second shift register (figure 4-5). The loading of
upper bits drops the normally active PLATO communicationrequest status/interrupt until the word is clocked from the
registers.
4-22
62940007 B
DATA BUS BITS
r-'-~--r-'-~--r-'--'LOAD
o
LOWER
=::j BITS
........,Ir'",'1"""==:;..
IGNORED
LOAD
UPPER
BITS
w
IGNORED
OS5I8-1
Figure 4-5.
Transmit PLATO Word Transfer
Word Formatting
As the 11 upper and lower bits are clocked from the registers,
the transmitter inserts a start bit preceding the word and a
stop bit at the end of the word (figure 4-6). The parity bit
for each word is included in the transfer of the lower 5 bits
and is not generated by the transmitter.
* CONVENTIONAL
BIT POLARITY
Figure 4-6.
03336-4
PLATO Transmit Word Format
ASCII COMMUNICATION CIRCUITS
The circuits for ASCII network communications in channel A of
the Z80A-SIO/2 chip are selected through microprocessor output
0516, which connects channel A with the selected interface.
The word format, parity, and divide-by factor for the channel
are specified through output 1116. The specified word format
62940007 B
4-23
is for receive/transmit words of one start bit, eight data bits,
and one stop bit. No parity bit is specified because parity
checking/generation is done by the resident loader or loaded
controlware, not the channel.
The divide-by factor established via output 1116 determines
whether the channel receive/transmit rates are 1/1, 1/16, 1/32,
or 1/64 the rate of separate input clocks. These clocks (one
for receiving, one for transmitting) are selected through output
0616. The selection includes internal clocks of 307.2, 153.6,
76.8, 38.4, 19.2, 9.6, and 4.8 kHz, or external receive/transmit
clocks from a modem. Except when reselected by controlware, the
receive/transmit rates derived from the selected input clocks
and divide-by factor are the default rates specified by internal
switches S5-6, -7, and -8.
The following paragraphs describe the ASCII receiver and ASCII
transmitter within channel A.
ASCII Receiver
To detect words, the receiver searches the serial data input of
the selected interface for a start bit. Except for the longline interface, the Carrier Detect and Data Set Ready signals of
the selected interface must be on for this input to occur. Upon
detecting a start bit (logical 1 to 0 transition), the receiver
clocks in the eight bits that follow (least significant bit
first) and the ending stop bit (figure 4-7). If a word has no
stop bit, an internal framing-error status bit is set that is
available to the microprocessor via output/input 1116.
Once a received word is assembled, it enters a three-stage,
first-in, first-out buffer within channel A, an internal
character-available status bit is set, and if enabled, an interrupt is issued to the microprocessor. An input 1016 transfers
the word from the buffer to the microprocessor.
L. EAST SIGNIFICANT \
DATA BIT
MA RKING LIN E
I
MOST SIGNIFICANT DATA B I T ' )
AS SEEN BY RECEIVER (MAY
BE THAT OR BE PARITY BIT
THAT PROGRAM CHECKS)
START r"1-":'o---rI--I-'""T"I--;:'t-:--'Ir---6-""Ir---7---:"-,r--ST-O-P--'TI-M-A-R-K-IN-G-L-I-N-E
~
4029-2
WITH AN EXTERNAL RECEIVE
CLOCK, DATA IS SAMPLED ON
THE FALLING EDGE OF THE
CLOCK (RJI-I7)
Figure 4-7.
4-24
\
AT LEAST
ONE BIT TIME
ASCII Receiver Word Format
62940007 B
ASCII Transmitter
The transmitter in channel A consists of a buffer register and a
shift register. A word for transmission is loaded in the buffer
register through output 1016. If the shift register is not
busy, the word is then transferred to the shift register for
serialization, an internal transmit-buffer empty status bit is
set, and if enabled, an interrupt is issued to the microprocessor.
In transferring a word to the shift register, the transmitter
inserts a start bit preceding the word and a stop bit at the end
of the word (figure 4-8).
LEAST SIGNIFICANT ' \
DATA BIT
MARKING LINE
I
MOST SIGNIFICANT DATA BIT
AS SEEN BY TRANSMITTER (MAY)
BE THAT OR BE PARITY BIT
THAT PROGRAM GENERATES)
START I-----=O:...-...,Ir--I -'"r1-~;;~""1r---6-""1'---7--=-'"rI-S-T-O-P"",r'"M-A-R-K-I-NG-L-IN-E
~
WITH AN EXTERNAL TRANSMIT
CLOCK, TRANSITIONS OCCUR
ON THE RISING EDGE OF THE
CLOCK (RJI-I5)
4029-2
Figure 4-8.
\
I BIT
ASCII Transmitter Word Format
SERIAL INTERFACE CIRCUITS
These circuits allow the terminal to interface with a serialcommunication device via RS-232-C/CCITT V.24/V.28 signals. Use
of the SERIAL interface is controlware dependent. The communication circuits for the interface are in channel B of the
Z80A-SIO/2 chip. Except for the following differences, the
operation of these circuits is identical to that of channel A,
which was described under ASCII Communication Circuits:
•
A separate set of microprocessor inputs and outputs
access channel B like channel A.
•
The receive/transmit words of channel B can contain 5, 6,
7, or 8 data bits.
•
•
Channel B has a common receive/transmit rate and has no
. provision for use of an external clock. Also, an additional 2.4 kHz clock is included in the clock selection.
The Carrier Detect and Data Set Ready signals of the
serial interface do not have to be on in order to receive
data.
62940007 B
4-25
PARALLEL INTERFACE CIRCUITS
These circuits handle the information exchanges between the
microprocessor and the peripheral devices connected to the
PARALLEL interface. Up to eight addressable devices can be connected to this interface in a daisy chain. Exchanges over the
interface are initiated through input 2Y/3Yl6 and output
2Y/3Yl6 and occur in bit-parallel fashion. The following
paragraphs describe the interface signals and timing involved in
these exchanges.
Interface Signals
The signal definitions for the PARALLEL interface are as follows:
•
Data Line 0 through Data Line 7 - These eight bidirectional lines carry the information from the terminal to
the external devices or vice versa, depending on the
External Write and External Read control signals. The
kind of information is defined by the six Address Lines,
which determine the device being communicated with and
the function taking place.
NOTE
Unless a device is requested to place
data on the Data Lines, its data line
drivers must be in the high impedance
state.
4-26
•
Address Line 0 through Address Line 5 - These six output
lines of the terminal determine the device to receive or
send data and the kind of function to be performed on the
data.
•
External write - When active, this control signal from
the terminal indicates that the information on the Data
Lines goes to the device defined by the Address Lines.
The device should get ready to receive data.
•
External Output - This control signal from the terminal
complements the External Write signal. External Write
defines the direction flow of data; External Output
active indicates that the data on the Data Lines is
stable and that the device defined by the Address Lines
is to act on it.
62940007
•
External Read - When active, this control signal from the
terminal indicates that the device defined by the Address
Lines is to place the requested information on the Data
Lines. Only at this time can the device turn on its data
line drivers.
•
External Ready - When active, this signal from the
addressed device indicates that the I/O exchange
initiated by the terminal has been completed (data was
received by the device during an output or placed on the
Data Lines by the device during an input).
•
Interrupt Line - This line is common to all devices on
the PARALLEL interface and any of them can activate it at
any time.
Its purpose is to notify the microprocessor
that a device has data to exchange. When the microprocessor services the interrupting device, the device
must deactivate this line.
Timing
Figures 4-9, 4-10, and 4-11 show the three possible cases of
interface timing for the output and input exchanges that are
described next. The microprocessor and interface circuits in
all three cases start the exchange in the same fashion.
The
difference between cases depends exclusively on the device
response.
All timing is referenced to the PARALLEL (RJ2) connector at the terminal.
The three cases described for an output exchange (no extra wait
states, extra wait states, and timeout) also apply to an input,
with the only difference being that the device must input the
requested data before 750 nanoseconds for no extra wait states
to occur.
Output Exchange
An output 2Y/3Y16 places the data and address code from the
microprocessor on the Data and Address Lines (shown by the
drivers going from tristate floating fo bipolar state). Fifty
nanoseconds later, the interface circuits drop the External
Write signal active low. At this time, the devices on the
interface start sampling the address code.
62940007
4-27
-1
250
t-
CLOCK (4 MHz)
REFERENCE ONLY
ADDRESS
----~(~------------~)~--------
DATA (OUTPUT)
----~(---------------)~---------
EXTERNAL WRITE
~~--------/
I
------~-+-2-5-0--,~ - - -O~T;U~ -7
INPUT
EXTERNAL OUTPUT
EXTERNAL READ
-
~~----------~/~-------->0-1 14-
DATA (INPUT)
-----------I--------~(-~I__~)~-----------
~1.~---750----~~~--~
SAMPLE EXT READY
--------~:----------"
\~---------I
I
1->0
EXTERNAL READY
NOTE: ALL TIMES IN NANOSECONDS.
03340
Figure 4-9.
External Input/Output Timing (No Extra Wait states)
Two-hundred-fifty nanoseconds after issuing External Write, the
interface circuits drop the External Output signal active low.
The data is stable at this time, and the addressed device uses
the External Output signal to latch the data.
From the beginning of output 2Y/3Yl6, the interface circuits
force the microprocessor to enter a series of wait states, each
250 nanoseconds long. This continues at least 750 nanoseconds
after the issue of External Write. At this time, the interface
circuits start sampling the External Ready line to determine
which of the following cases is applicable:
•
4-28
No extra wait states (figure 4-9) - If the device has
raised External Ready 750 nanoseconds after External
Write, the interface circuits release the microprocessor
so it can continue instruction execution.
62940007
•
Extra wait states (figure 4-10) - If the device has not
raised External Ready 750 nanoseconds after External
Write, the wait states continue until External Ready is
raised or the following timeout occurs.
•
Timeout (figure 4-11) - If the device has not raised
External Ready within 54 microseconds (+20%) after External Write, the interface circuits simulate receipt of
External Ready, release the microprocessor, and set the
I/O timeout status/interrupt to inform the microprocessor
that the exchange was not completed.
-t
250
r
CLOCK (4 MHz)
REFERENCE ONLY
ADDRESS
DATA (OUTPUT)
EXTERNAL WRITE
EXTERNAL OUTPUT
------.., - - - - INPUT
- - -- -
EXTERNAL READ
-I
-----.
- - - - - - - -,----
-
OUTPUT
250
I-
DATA (INPUT)
1
SAMPLE EXT READY
1---
~I
750 - -........ - - - - 4
1--_-.1_~_>_O_-..,
1
1.->0
EXTERNAL READY
---I!I
~~~_--II ~I
......- - - - <43.2JJ,s
------.-1:.
NOTE: ALL TIMES IN NANOSECONDS UNLESS STATED OTHERWISE.
Figure 4-10.
62940007
03341
External Input/Output Timing with Delayed
Device Ready (Extra Wait States)
4-29
-t
250
r-
CLOCK (4 MHz)
REFERENCE ONLY
ADDRESS
DATA (OUTPUT)
EXTERNAL WRITE
EXTERNAL OUTPUT
---------, - - - -INPUT
- - - -
-I
EXTERNAL READ
-
- -
- -
- - - - -
-,----
OUTPUT
------.
250
I-
DATA (INPUT)
I
I
1~1~~--750---~~~1
SAMPLE EXT READY
I
r---~
1-->0
I
14->0---..1
,-----
EXTERNAL READY
TIMEOUT STATUS
~1~~---54~S±20% -----~~~
03341-1
NOTE: ALL TIMES IN NANOSECONDS UNLESS STATED OTHERWISE.
Figure 4-11.
External Input/Output Timing with Device
Not Ready (Timeout)
Input Exchange
An input 2Y/3Yl6 places the address code from the microprocessor on the Address Lines and turns the data receivers on.
Fifty
nanoseconds later, the interface circuits drop the External Read
signal active low.
The devices then start sampling the address
code, and the addressed device subsequentially turns its data
drivers on and conditions the External Ready line.
4-30
62940007
As with an output, the microprocessor is forced into wait states
from the beginning of the operation until the receipt of External Ready (no extra-wait state or extra-wait state cases) or
until timeout occurs.
VIDEO BOARD
The video board contains the memory and display refresh circuits
of the terminal and provides the 4-MHz clock that drives the
microprocessor on the controller board. The following paragraphs describe the memory structure on the video board and the
display refresh it performs.
MEMORY STRUCTURE
Figure 4-12 shows the memory structure and address assignments.
The board contains ROM and RAM that serve as program memory and
RAM that serves as display-refresh memory.
".1
FFFFI6
RAM
~ ~~~ ~ ~ ~ ~~~~
[
------I.
800016 - - - - - _ - '-.
r-··--,
OPTIONAL I
7FFFI6--...
·,... - - - - ,
I OPTIONAL I
I
ROM
I
I
**
I
400016---.... 1.. __ ~ .J
I..
7-
I
RAM*"''',
_...I
------,
3FFF I6
I
I
------·r---.. . . --.. .
RAM
I
-
I
,
10001 6 - - - - - -... 1.----..--...1
·G
OFFFI6--...
ROM
0000 16- -.....
*
PROGRAM
MEMORY
I
...J
B----
*CONTAINS RESIDENT DIAGNOTIC/LOADER PROGRAM
**EXPANDABLE IN 4K INCREMENTS TO A TOTAL
OF 16K FOR ADDITIONAL RESIDENT PROGRAMS
03357-3
-tfiHf STANDARD ON CC629-C/D
Figure 4-12.
62940007 E
I
Memory Structure and Address Assignments
4-31
Program Memory
The basic program memory for the CC629-A/B consists of 4096
8-bit words of ROM that holds the resident diagnostic/loader
program and 16 384 8-bit words of RAM for controlware storage.
Through options, up to 16 384 words of ROM containing additional
resident programs can be added, in 4096 word increments, and 16
384 words more RAM added (CC629-C/D has extra RAM as standard).
The overlap of ROM and RAM addresses is handled through the
selection scheme described earlier under microprocessor
instruction fetching.
The program RAM requires that the microprocessor perform 128
refresh cycles every two milliseconds to keep the storage cells
of those chips active.
Display-Refresh Memory
These 32 768 8-bit words of RAM store the information that is to
be displayed. Each bit stored corresponds to a specific dot
position on the screen. Both the microprocessor and display
refresh circuits share access to this memory, with the display
refresh circuits having priority. No refresh cycles by the
microprocessor are necessary with this RAM because of the
sequential reads done by the display refresh circuits.
DISPLAY REFRESH
The following paragraphs describe the refresh-memory/display
relationship and display-refresh timing.
Refresh-Memory/Display Relationship
There is a direct relationship between the address of the
refresh memory where data is written and the coordinate where
the data is displayed. The relationship is:
o
4-32
Each refresh-memory address defines a memory location
where eight bits (dots) of information are stored. These
eight bits represent eight contiguous dots positioned on
a scan line, with data bit 0 (least significant) on the
left and data bit 7 (most significant) on the right
(figure 4-13). Sixty-four of these dot groups or columns
exist across the displayable area of the screen (columns 0
through 63).
62940007 E
COLUMN I
COLUMN 0
0
COLUMN 2
A
A
A.
"
I I I I
I I \' I
I t I 2 2 2 2 '~
0123456789012345678901234
I
I
2
I
3
SCAN
LINE
14
5
6
I
7
~;
9
10
~,
'\
I
I
\
DATA BIT 7
MEMORY ADDRESS 800816
DATA BITO
64 COLUMNS
AREA WHERE DATA
IS DISPLAYED
I
- 1 - -.....
I
I
:
i
I
512 SCAN LINES
t _______________ 3
04030
Figure 4-13.
Refresh-Memory/Display Relationship
•
The upper seven bits of the 16-bit refresh-memory address
define one of the 64 columns. The lower nine bits of the
address define one of the 512 scan lines that are within
a column (lines 0 through 511). Increasing the upper
7-bit segment by one refers to the next column to the
right~ and increasing the lower-bit segment by one refers
to the next lower line in a column.
•
The lowest refresh-memory address (800016) corresponds to
the upper-left corner of the displayable area (column 0,
line 0); and the highest address (FFFF16) corresponds to
the lower-right corner (column 63, line 511).
62940007 B
4-33·
As each refresh-memory address relates to an 8-dot horizontal
area on the screen, illumination of dots depend on the stored
bit values. A logical 1 in memory results in the corresponding
dot being illuminated, and a logical 0 results in it being black.
Display-Refresh Timing
The display refresh circuits generate a noncomposite video signal with separate line sync and field sync signals for the display monitor and a composite video signal that is output on the
rear-panel VIDEO OUT connector. Both sets of signals have the
following timing:
•
A 34.23-KHz scanning rate making scan line timing as
shown in figure 4-14. Scanning goes left to right across
the screen, then retraces left and down to the next line.
•
A 50- or 60-Hz frame-sync rate making frame timing as
shown in figure 4-15. The 50- and 60-Hz rates are
generated by internal clocks and are selected via the
50/60-Hz switch on the power supply.
WHITE---- - - - - -
r
BLACK-------,
SYNC------
----I
VIDEO
'~~-----------------------------~~L
_L-J
SLI tOi I
:
•
tSL = SYNC WIDTH
tVL
.. •
tUNE
I t021
.. ..
:
= 2.998 uSEC
t DJ = SYNC/VIDEO DELAY= 2.998 uSEC
t VL = VIDEO FIELD
= 21.248 uSEC
t D2 = VIDEO/SYNC DELAY= 1.972 uSEC
=29.216 uSEC (34.23 KHZ)
03358
Figure 4-14.
4-34
Scan Line Timing (Composite Video Signal)
62940007
LINE
5,)7
LINE 512
:7
.:.
ISF
~4
~LlNE2
.~
LINE I
60HZ
VIDEO WIDTH
t 03 VIDEO/SYNC DELAY
t SF FRAME SYNC
t 04 SYNC/VIDEO DELAY
FRAME TIME
50 HZ
(LINES)
(m SEC)
(LINES)
(m SEC)
512
19
4
25
14.959
0.555
0.117
0.730
512
73
4
96
14.959
2.133
0.117
2.805
570
16.653
685
20.013
03358
Figure 4-15.
Frame Timing (Compos i te Video Signal)
The internal modem/DAA (data-access arrangement) board is only
applicable for PLATO network communications and is selected for
operation through microprocessor output 0516. The board uses
the phase-coherent frequency-shift keying (FSK) type of
modulation/demodulation and operates asynchronously, full-duplex
on a two-wire telephone line. Major modulation/demodulation
characteristics are:
•
The analog transmitter operates from 0 to 150 bps and
generates a 390-Hz signal for a mark (logical 1) and a
490-Hz si~nal for a space (logical 0). Transmitter power
is -9 dBm (maximum) to -13 dBm (minimum).
•
The analog receiver operates from 0 to 1200 bps and
recognizes an incoming signal of 1300 Hz as a mark and
2100 Hz as a space. The power of incoming signals can
range from -10 dBm (maximum) to -43 dBm (minimum).
Carrier detect occurs for signals between 1100 and 2300 Hz.
Connection of the analog receiver/transmitter with the telephone
line is made through a relay on the board that is controlled by
the front-panel TALK/DATA switch.
Use of the TALK/DATA switch
is described in Operation, section 2.
62940007
4-35
OPERATOR PANEL
The operator panel consists of a printed-circuit board that is
mounted behind the bezel/keyboard cover. Attached to the board
are: the audible alarm, RESET switch, TALK/DATA switch, six
LEOs, and the ten selection switches that are behind the protective door.
Program access to the setting of switches on the
board occurs via microprocessor inputs 0016 and 0616' Output 0016 controls the LEOs when they are under microprocessor
control, and output 0516 controls the alarm.
TOUCH PAN EL
The touchpanel consists of a mylar panel with sixteen Y signal
lines in horizontal rows overlaying a glass panel with sixteen X
signal lines in vertical columns. These X/Y signal lines connect to the touchpanel-interface circuits on the controller
board. When the outer mylar surface is pressed against the
glass, the intersecting row and column signal lines effectively
short together and the interface circuits capture the X/Y coordinates for transfer to the microprocessor.
The touchpanel-interface logic operates basically as follows.
The upper 4 outputs of an initially free-running a-bit counter
are fed into a 1-of-16 decoder, which sequentially drives each
column (X) signal line to a logical low while leaving the others
high.
During the excitation of each column signal line, the
lower 4 outputs of the counter are used, via a 16-input multiplexer, to sequentially select each row (Y) signal line for sampling. Upon detecting a logical low row signal line, the logic:
•
Delays (debounces) the signal
•
Stops the counter
•
Sets the touchpanel data-ready status/interrupt
•
Passes the current counter outputs (X/Y coordinates) to
the microprocessor upon an input 0216
•
Enables the counter to continue scanning after the input
02 16 by the microprocessor
4-36
62940007 B
KEYBOARD
Except for the SHIFT and CTRL (Control) keys, each keyboard key
enables a shifted code (SHIFT key in use) and an unshifted code
(figure 4-16).
Either type code is increased by 8016 when the
CTRL key is in use. None of the actual keycodes are generated
by the keyboard itself. Rather, the basic codes are generated
by the keyboard interface circuits on the controller board and
are modified by the controlling program.
A counter in the keyboard-interface circuits outputs counts that
are equal to the unshifted codes assigned to keys.
The keyboard
decodes this output and indicates the state of the corresponding
key via a Strobe signal.
If the key corresponding to the
current count is being pressed, an active low Strobe signal
causes the keyboard interface circuits to:
•
Delay (debounce) the signal
•
Stop the counter
•
Set the keyboard data-ready status/interrupt
•
Pass the current counter output and state of SHIFT and
CTRL keys to the microprocessor upon an input 0116
•
Enable the counter to continue counting after the input
0116 by the microprocessor
'~~ mITJmmmmQCJmm~~~ilnl
UN~~~lED_oo
01
02
03
04
05
06
07
08
09
58
10
II
12
18
~~~mmmQQQQQQI~:).~~~
IF
OC
OE
51
57
45
52
54
59
55
49
4F
50
13
14
15
IC
••8
~~I~~m~~~O~~~·
~.E]mmm[jQQGJDmml~~lljj~
00
08
OA
OF
41
53
5A
44
58
46
43
47
56
48
42
4A
4E
48
40
4C
5F
5C
5E
16
50
17
18
10
19
IA
60
I~
40
02298-1
NOTE: SHADED AREAS INDICATE DIFFERENCE IN KEYCAP COLORS.
Figure 4-16.
62940007 B
Keyboard Codes and Legends
4-37
DISPLAY MONITOR
The monitor is a noncomposite display that is driven by standard
TTL/DTL logic-level inputs.
The display inputs are line sync,
field sync, and video information, which are provided by the
video board.
DC power for the display is provided by the power
supply board. The display consists of deflection electronics,
high voltage circuits, video electronics, cathode-ray tube (crt)
and necessary mechanical support components. Adjustments are
provided for size, centering, focus, brightness, and linearity.
All adjustments except brightness are factory set, but may be
adjusted by maintenance personnel.
POWER SUPPLY BOARD
The power supply board converts 120-V ac, 50/60-Hz input power
to regulated outputs of +5, -5, +12, -12, and +55 V. On international units, a stepdown transformer is associated with the
power supply board to reduce the 220 to 240 V ac to the required
120 V ac level. The +5, -5, +12, and -12 V power the terminal
logic circuits, and the +55 V powers the deflection and highvoltage circuits of the display monitor.
The circuits of the power supply board are divided in two sections, the section that develops +55 V and the section that
develops +5, -5, +12, and -12 V.
Each section contains separate
transformers and separate rectifier, filter, and regulator
circuits. The section for +5 V contains an additional
overvoltage-protection circuit. The circuit automatically shuts
off all outputs of that section when the +5-V output rises to
+5.5 to +6.8 V. The +5-V and +55-V outputs are adjustable.
4-38
62940007 B
DISPLAY MONITOR
The monitor is a noncomposite display that is driven by standard
TTL/DTL logic-level inputs. The display inputs are line sync,
field sync, and video information, which are provided by the
video board. DC power for the display is provided by the power
supply board. The display consists of deflection electronics,
high voltage circuits, video electronics, cathode-ray tube (crt)
and necessary mechanical support components. Adjustments are
provided for size, centering, focus, brightness, and linearity.
All adjustments except brightness are factory set, but may be
adjusted by maintenance personnel.
POWER SUPPLY BOARD
The power supply board converts 120-V ac, 50/60-Hz input power
to regulated outputs of +5, -5, +12, -12, and +55 V. On international units, a stepdown transformer is associated with the
power supply board to reduce the 220 to 240 V ac to the required
120 V ac level. The +5, -5, +12, and -12 V power the terminal
logic circuits, and the +55 V powers the deflection and highvoltage circuits of the display monitor.
The circuits of the power supply board are divided in two sections, the section that develops +55 V and the section that
develops +5, -5, +12, and -12 V. Each section contains separate
transformers and separate rectifier, filter, and regulator
circuits. The section for +5 V contains an additional
overvoltage-protection circuit. The circuit automatically shuts
off all outputs of that section when the +5-V output rises to
+5.5 to +6.8 V. The +5-V and +55-V outputs are adjustable.
62940007 E
4-38.1
I
DISPLAY MONITOR
The monitor is a noncomposite display that is driven by standard
TTL/DTL logic-level inputs. The display inputs are line sync,
field sync, and video information, which are provided by the
video board.
DC power for the display is provided by the power
supply board. The display consists of deflection electronics,
high voltage circuits, video electronics, cathode-ray tube (crt)
and necessary mechanical support components. Adjustments are
provided for size, centering, focus, brightness, and linearity.
All adjustments except brightness are factory set, but may be
adjusted by maintenance personnel.
POWER SUPPLY
B~RD
The power supply board converts 120-V ac, 50/60-Hz input power
to regulated outputs of +5, -5, +12, -12, and +55 V. On international units, a stepdown transformer is associated with the
power supply board to reduce the 220 to 240 V ac to the required
120 V ac level. The +5, -5, +12, and -12 V power the terminal
logic circuits, and the +55 V powers the deflection and highvoltage circuits of the display monitor.
The circuits of the power supply board are divided in two sections, the section that develops +55 V and the section that
develops +5, -5, +12, and -12 V.
Each section contains separate
transformers and separate rectifier, filter, and regulator
circuits. The section for +5 V contains an additional
overvo1tage-protection circuit. The circuit automatically shuts
off all outputs of that section when the +5-V output rises to
+5.5 to +6.8 V. The +5-V and +55-V outputs are adjustable.
62940007 F
4-39
I
DIAGRAMS
5
This section contains the logic diagram set for the terminal.
Instructions on how to interpret the logic diagrams are contained in the preliminary sheets of the diagram set.
The optional RAM expansion is a standard feature on CC629-C/D
terminals.
62940007 E
5-1
SHEET
NO
CROSS
REFERENCE
NUMBER
MODULE
LOCAT ION
LOGIC DIAGRAM TITlE
REV
......
Ww
Ww
~il5
I
r
LOGIC DIAGRAM SET CONTENTS SHEET
2
;:r
LOG ICOl AGRAN CONTROL SHEET 2
3
A
KEY TO DIAGRAMS - PHYSICAL LOCATION CODES
4
<:;
KEY TO DIAGRAMS - PHYSICAL LOCATION CODES
5
A
KEY TO SYMBOLS
~I!?
6
000
G
CABLI NG AND INTERCONNECTI ON 0 I AGRAI
1
DOl
\01
SCHEMATIC DIAGRAM, BCAS (ASCII 1ST POIER SUPPlY>
8
OOIA
H
SCHEMATI COl AGRAM, BCAO POIER SUPPLY
B
002
A
SCHEMATIC DIAGRAM. BCAO POIER SUPPLY
10
003
A
VIDEn CONTROLLER (OABO) EXTERNAL CONNECTIONS
11
004
A
SCHEMATIC. DISPLAY' LOGIC CABLE
12
005
C
o ISPLAY SCHEMATI C
13
00&
A
CONTROlLER MODULE (OACO) EXTERNAL CONNECTIONS
14
A
VIDEO CONTROLLER (OAIO) ILOCK OIA;RAM
15
A
CONTROLLER MODULE (OACO) BLOCK DIA;R41
~Z
Ow
_z
U'"
98
N
11
100
(.
SCHEMATI COl AGRAI, OAIO
17
101
A
SCHEMATI COl AGRAI, OAIO DOT Till.; CHAIN
11
102
A
SCHEIATIC OIAGRAI, OAIO
11
103
A
SCHEIATI COl AGRAI, OAIO VERTICAL TlIIN;, IEIORY IINOOI TIliNG
21
114
Go
SCHEIATIC OIAGRAI, OAIO IEIORY 111001 Till.;
21
105
A
SCHEMATI COl AGRAI, OABO VIDEO SHIfT RGTRS/IUX, DISPLAY DRIVE LOGIC'
22
108
Ci
SCHEIATIC OIAGRAI, OABO BULK IRITEIERASE, VIDEO DISABLE
2J
101
G
SCHEMATI COl AGRAI, OAIO PROCfSSOR IEIORY TlIIN;
I
24
III
A
SCHEIATIC OIAGUI. OlIO DISPLAY ADDRESS REGISTER, DISPLAY
IEIORY TiliNG
f
~
n
lOt
A
SCHEIATI COl AGRAI, OABO 0 ISPLAY IEIORY ADDRESS lUX
21
110
D
SCHEIATI COl AGRAI, OlBO 0 ISPLAY IEIORY
21
111
D
SCHEIATIC OIAGRAI, OliO PROCESSOR IEIORY
28
112
S
SCHEMATIC oIAGRAI , OlIO OATA IUS TRANSCEIVER, COIPOSITE VIDED.
IEIORY OUTPUT IUfFERS
28
113
A
SCHEIATIC OIAGRAI, OAIO PROGUIIEO (All
OSCILLAT~,
H~IZONTAL
CPU INTERfACE
TlIIN;
.:
I
i
~
if
i
c>
~
~
~
~
30
G
VIDEO CONTROLLER 100ULE OA80 POIER, GROUND AHO OECOUPlIN;
~
31
A
VIDEO DOT TIMING, CHARACTER TIliNG AND IEMORY IINOOrs
32
I
E-
LINE TIMING fiELD (50/60 HZ) TIliNG
114
33
%
C
DISPLAY MEMORY TlMIHG
~
34
200
G
SCHEMATIC DIAGRAM, OACO Z80 MI CROPROCESSOR, RESET LOGI C
<>
35
201
Co
SCHEMA TI COl AGRAM, OACO uP SIGNU 8UffERS
~
,-
c
z
(,)
•
5-2
62940007 F
SI£ET
_LE
LICATI.
NO.
2
3
4
LOGIC _
lin I
TITLE
St£ET
110.
CROSS
II[RJeCE
_R
IODULE
LOCAT IIII
lEV
LOGIC DIAGRAM TITLE
0\
IV
212
G I _TIC
11_. _
I. .T III
61
reo
J
SCHElm COl AGRMI, !AGO
213
Go
I _TIC
11_, _
III _
62
701
:r
SCHEIATiC OIAIlIIMI, !AGO
2U
Go I SCllEMTlC,IIACllIotI, IACI 110 ~, .. ~"L LED RG11I & DRIYU
83
702
J"
SCHEIATIC OIAIlIIAI, !AGO
39
205
(,
40
211
G I SCHEIATiC
41
207
1 G 1 SCHEIATIC
42
208
G
SCHEIATIC DIAGRAI, IACII
43
209
G
SCHEIATIC DIAGRAI, OACD LOIIB LIME IECEIVER,RS232 DRIVERS & RECEIVERS
44
210
Go
SCHEIATIC DIAGRAI, OACO PLATO RECEIVER LOGIC
45
211
G
SCHEIATIC DIAGRAI, DACD SERIAL BAUD RATE lUI, TOUCH PANEL CONTACT DETECT
46
21lA
Go
SCHEIAT! COl AGRAI, OACD COli CLOCK RATE SELECT, KEYBOARD BUFFERS,
ASCII/PLATO INTERFACE lUX
47
212
Go
48
212A
(, 1 SCHE.ATlC
49
213
SCHE.ATIC OIAGRAI, OACO TOUCH PANEL LOGIC Y-SCANNER
50
214
"'
Go
CONTROLLER 100ULE DACO PDIER, GROUND. OECOUPLING
51
A
PROCESSOR IEIORY CYCLES
52
A
PLATO RECEIVER Till"!;
53
.1 A
31
\0
.po.
0
0
0
DI
37
3.
-...J
I'1j
CI
BI
VI
AI I
SCliEIATIC DlU.IotI, IACI FUTIII( SELECT SlITCllES, 1.0. COOE _TS,
DIASRAI, DACI l U _ $_ _ • '*ITACT DETECTlOli LOSIC,
INTERRUPT IASl ISTR & E_EI
OIAUAII, OACD PLATO liT SHIFT IlECiSTElS, co. CLOClS,
INTERVAL TIlERS
~LAT8
_ICATI.S CONTROL
1 SCHEIATIC
DIAGRAI, OACD CD.UNICATlDH & SERIAL 118 INTERFACES
LONG LINE DRIVER
DIAGRAI, OACO TOUCH PANEL LOGIC I-SCANNER
PLATO TRANSIITTER TlIIMe
54
300
G
SCHEIATIC DIAGRQ, OADII OPERATORS PANEL
55
480
D
lEYIOMD
56
500
A I LOGIC 01 AU/otI, TOUCH ~AllEL (OPTIIIAl)
57
600
G
58
601
Go
1 IOOEI
59
602
A
I _ I orTlIIII: P8IU, -
60
603
G
IOOEI OPTI 011, TR_I TTER • DAA
OPTIIIII, MCEIVER
• IEC_L1Me
_ I LINE FILTER
COIII_
I
w
•
LOGIC DIAGRAM
CONTROL St£ET 2
15920
o
r/)
1&1
r/)
2
ct
8u
z
a::
0
C) ~ ~
o u
o 0
I- ..J
..J
>- ct
1&1 U
¥ (ii
>-
::c
0..(',1
OABO
TYPICAL PIN
NOIBERING FOR IC
PHYS ICAL LOCATi ON CODES
10 16
2
15
3
4
5
14
13
12
6
5-4
c
11
7
10
8
9
•
CIRCUIT MODULE LATOUT. THESE DRAWiNGS DEPICT THE
COMPONENT SIDE ASSEMBLY OF THE TlO LOGIC IODULES
DIAGRAMIED IN THIS LOGIC SET. THE ALPHANUMERIC
CODES AT THE BOTTDI OF THE SYIBOLS ARE THE PHYSICAL
LOCATION COOES. THESE NUMBERS CDRRESPONDE TO THOSE
SHOIH INSIDE THE LOGIC SYIBOL OUTLINES ON THE
01 AGIIAI SHEETS.
o
62940007
--
LOOPBACK
NOIIII
TEST
L -____~~~_ _ _ _-
N
H8
0
H7
09
RJI
IIH
OACD
TYPICAL PIN
NUIBERING FOR IC
P11YSlCAl LOCATION CODES
CIRCUIT MODULE LAYOUT. THESE DRAWINGS DEPICT THE
COMPON£llT SIDE ASSEMBLY OF THE TID LOGIC MODULES
DIAGRAMMED IN THIS LOGIC SEL THE ALPHANUIERIC
CODES AT THE BOnDI OF THE SYIBOLS ARE THE PHYSICAL
LOCAT11I1t CODES. THESE NUIBERS CORRESPONO TO THOSE
SHOIH INSIDE THE LOGIC SYMBOL OUTLJNES ON THE
01 AGRAI SHEETS.
D l~
12
II
10
9
o
62940007 D
5-5
•
Q
GENERAL P. C, BOARD INFORMATION
GENERAL LOGIC SYMBOL INFORMATION
INTEGRATED CIRCUIT LOGIC SYMBOL
[I] 140
B4A
...
EACH PRINTED CIRCUIT BOARD, UNDER IDEAL CONDITIONS WOULD BE
REPRESENTED ON ONE SHEET
HOWEVER, OU[ TO THE lARGE NUMBER OF
CIRCUITS lOCATED ON SOME BOARDS, MULTIPLE SHEETS MAY BE REOUIREO
THE BOARD TYPE IS II STEO AT THE BOTTOM OF EACH 0 I AGRAM SHEfT, THE
BOARD lOCATION WITHIN THE lOGIC CHASSIS MAY ALSO ACCOMPANY THE
BOARD TYPE
EACH SYMBOL ON THE DIAGRAM REPRESENTS A PORTION OF
AN INTEGRATED CIRCUIT. THE ENTIRE INTEGRATED CIRCUIT OR A DISCRETE
COMPONENT. EACH SYMBOL REFLECTS fHE lOGIC FUNCTION IDENTIFIER,
ELEMENT OR COMPONENT TYPE, AND THE ELEMENT OR COMPONENT lOCATION
ON THE BOARD. COMPONENT lOCATION IS DEfINED BY AN ALPHANUMERIC
MATRIX DEPENDING ON THE TYPE Of PRINTED CIRCUIT BOARD USED. fOR
INfORMATION ON THE COMPONENT OR ELEMENT TYPES USED IN THIS lOGIC
SET, REfER TO KEY TO lOGIC SYMBOLOGY MANUAL, CDC PUBLICATION
NUMBER B2172400
lOGIC fUNCTION IDENTifiER
ElEMENT TYPE
PACKAGE lOCATION ON BOARD
(PHYSICAL lOCATION CODE I
_
_
/l
:=1I}&
TAGGING INFORMATION
POlARITY INDICATOR
SIGNAlOEfINIlION
/
(£)
lL
000
333 A3_3 9
---14
140
3
~ :~:MENT
-READ
l
BOARD CONNECTOR
PIN NUMBER
/
»)---lL.
Q
I(')
~
& = AND
I
= OR
I = I NVERHR
X--Y = X(INPUTS) DECODED OR
ENCODED TO Y(OUTPUTS)
X/Y
SIGNAL ORIGIN
SIGNAL DESTINATION
BOARD CONNECTOR PIN NUMBER
BOARD CONNECTOR PIN NUMBER
BOARD lOCATION IN lOGIC CHASSIS
BOARD lOCATION IN lOGIC CHASSIS
= X(INPUT
lEVEl) CONVERTED
10 Y(OUTPUT lEVEl)
CROSS REFERENCE SHEET NUMBER
' - - - - - - CROSS REfERENCE SHEET NUMBER
ON BOARD, OFF SHEET TAGGING
N
8
QUALIFYING SYMBOLS
34B AB-B
PIN NUMBER
~o
QN
w 0-
NON-STANDARD ABBREVIATIONS
IN A lOGIC DIAGRAM SET HAVING MORE THAN ONE SHEET A HEXAGON IS USED TO INDICATE THAT THE SIGNAL
I S COM I NG fROM, OR GO I NG TO, ANOTHER SHEET Of THE SAME BOARD
(NOTE. EACH SIGNAL NAME IN TH I S
lOGIC SET HAS BEEN PRECEDED BY A "+" (INDICATING AN ACTIVE HI) OR A "-" (INDICATING AN ACTIVE LOll
r-+.:!R",EA",0'--_~0 ~~:
0
1T"E_ _
jf-....::J-W",R.w
004 0..-...:+!!,!RE",A!:.D----1f
OOB
004 01--.:.:+R
"'E"'AO'--_-1:
004
C.R. SHT. 004
N
C.R. SHT. 006
Q)-,-",W:!!.R,-,IT,,-E_~
C.R. SH!. OOB
ON SHEET TAGGING
VOLTAGE LEVELS
MISCELLANEOUS INDICATORS
ANALOG OR NON-lOG I C LE VElS
THE SMAll CIRCLES WITH ALPHA CHARACTERS INSIDE ARE USED TO
SHOW A SIGNAL PATH WITHOUT ACTUAllY RUNNING A LINE fROM ONE
POINT TO ANOTHER. A CIRCLE WITH AN ARROW POINTING AWAY fROM
IT IS THE SIGNAL OR GIN. IN DIRECT LINE WITH THE ORIGIN ARROW,
ANOTHER CIRCLE IS DRAWN WITH AN ARROW POINTING TOWARD IT, THIS
IS THE SIGNAL DESTINATION
NON-STANDARD lOG I C lEVEl
INTERVENING
lOGIC
3.
lOGIC LEVElS
on
lOGIC OPERATiON
HIGH (lOGICAL I) = +2.6 TO +5.0 VOLTS
lOW (lOGICAL 0) = 0.0 TO +045 VOLTS
SWITCHING POINT = +1.1 TO +1 9 VOLTS
TTL lOGIC OPERATION
HIGH (lOGICAL I) = +2.B TO +50 VOLTS
lOW (lOGICAL 0) = O.OV TO +0.45 VOLTS
SWITCHING POINT = +.B5V TO +/. 9 VOLTS
RESISTOR MODULES
SWITCH MODULES
~o-
REFERENCE DESIGNATION NO
(ENTIRE MODULE)
fr
rrr-
THE ClASS DESIGNATION lETTERS' 'TP
HAVE
NOT BEEN SHOWN ON THIS lOGIC SET
THEREFORE, THE TEST POINTS APPEAR AS fOllOWS
S2-I,B4
1!'
'irREFERENCE DESIGNATION NO
(INDIVIDUAL RESISTOR)
+5V
TEST POINTS
VAlUE
lOCATION Of RES ISTOR
MODULE ON THE BOARD
MODULE ON THE"""
BOARD
'oom"",
SWITCH POSITION ON MODULE
REfERENCE DESIGNATION NO
(ENTIRE MODULE)
R4B,47K,AI0
T
2 _MODULE PIN NO
u
5-6
62940007
4
3
2
8R I GHTNESS CONTROL
AC ENTRY PANEl
PIN 61408887
CJ\
AC ENTRi
CAlLE ASSEMBLY
51 HZ PIN 6140902
80 HZ PIN 6140896
N
\0
01:00
o
o
o
GROUND "RE ASSERL Y
50 HZ P/N 61391121
60 HZ NO GROUND "RE
Cll
H~O:;: ~~~~5427,LI--t-----------'
l31P3
50
60 NZ PIN 15165428
-...J
POIER CONNECTOR
CABLE ASSEMBLY
PIN 61408969
t:I
7
DISPLAY LOGIC
CABLE ASSEIBL Y
PIN 61408907
CR NO 004
)
9CAD
PJllfR SUPPL Y
CR NO 001 , 002
ASSEIBLY
PIN 90446204
3A CIRCUIT BREAKER
PIN 96837907
~
PI
DISPLAY ASSEMBLY
PIN 51916942
CR NO
005
TRANSFORMER ASSY
PIN 51918790
50 HZ UNITS ONLY
l51
DC POIER
CABLE ASSEMBLY
PIN 61408024
CR NO 003
c
OADO
OPERATOR PANEL
ASSEMBLY
PIN 90460877
CR NO 300
AlII
KEYBOARD
ASSEM8LY
PIN 51940B51
CR NO 400
r - -- - --- -
~C;-P~L- -
I
I
ASSEMBLY
PIN 15632062
CR NO 500
--,
I
I ... /17 ••
RP< Rr.M.
I
I
I
I
I
Bll
OA80
VIDEO CONTROLLER
ASSEMBLY
90446266
CR NO 100-114
OACD
CONTROLLER MODULE
CR NO 200-214
ASSEMBLY
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14 PIN INTEGRATED cns. PIN 14 = +5V, PIN I = GNO.
IS PIN INTEGRATED cns, PIN 16 +5V, PIN B GND,
24 PIN INTEGUTED CKTS. PIN 24 = +5V, PIN 11 = GND.
=
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UNLESS OTHERWISE SPECIfiED, All RESISTORS AIlE RATED
AT I '41 AND HAVE A TDLtRANCE Of 15%. RESISTANCE IS
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UNLESS OTHERWISE SPEClfJEO, All CAPACITORS ARE RATED
AT 25 _VDC AND HAVE A TOLERANCE Of +!O% AND -20%.
CAPACI fANCE IS SHDI. I. MICROfARADS UNLESS OTHERWISE
SPECifIED
4. UNLESS OTHERII SE 'NOTED ALL CIRCU IIS ARE PART Of OACO
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A::91:~4
Pluggable Chips on Video Board
~
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Figure 6-15.
62940007 B
03500·2
Pluggable Chip on Monitor Display Board
6-57
Procedure 9 - Checking and Adjusting Power Supply Voltages
To check/adjust power supply voltages, do the following.
If any
voltages are found bad, refer to SAM 3 for corrective action.
1. Remove terminal hood (procedure 3).
2. With power applied, adjust +5 V output as follows:
a. Measure for +5 V across capacitor C78 on controller
board (figure 6-16).
b. Insert adjustment tool of alignment tool kit (part
number 12263463) through +5-V access hole in monitor
chassis (figure 6-17).
NOTE
If the +5 V output rises to between
+5.5 to +6.8 V, that and all other
power supply outputs except +55 V will
automatically shut off.
c. Adjust potentiometer on power supply board for a +5 V
reading (+5+0.25 V is maximum allowable tolerance).
J
I
f
m
J
II
i ~-~:~UND
~GRDUND
-e7g
--12V
\"-____J
{....._ _...J7
t
)
03943
Figure 6-16.
6-58
Test Points for +5 V and -12 V on Controller Board
62940007
ADJUSTMENT
TOOL
-12-V LED
-5-V LED
+12-V LED------~~--~------~~+5-V LED
03460-3
_---~~--P:"---it~_:~·
+55-V ADJUSTMENT
+55-V LED
Figure 6-17.
Power Supply Board Adjustments
WARNING
Lethal voltages exist in the crt
monitor assembly. Use extreme caution when performing adjustments or
severe personal injury or loss of
life may result.
3. Adjust +55 V output:
a. Measure for +55 V at fuse on monitor display board.
For ground, use ground side of capacitor C35 (figure
6-18).
b. Insert adjustment tool through +55-V access hole in
monitor chassis.
c. Adjust potentiometer on power supply board for a +55 V
reading (+55 +1.10 V is maximum allowable tolerance).
62940007
6-59
+55V
Q~--~-
_GROUND
03500-3
Figure 6-18.
Test Points for +55 V on Display Board
4. Check that the following nonadjustable voltages are
present:
6-60
•
-12 +0.60 V across capacitor C79 on controller board
(figure 6-16)
-
•
-5 +0.25 V across capacitor C83 on video board
(figure 6-19
•
+12 +0.60 V across capacitor C66 on video board
(figure 6-19)
62940007
GROUNO~ nOD
a
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css
+ 12
Q,ollm _
fJ 00000000000
0 00000
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Figure 6-19.
03911- 5
Test Points for -5 V and +12 V on Video Board
Procedure 10 - Replacing Power Supply Board
To replace the power supply board:
1. Turn power off (procedure 1) and disconnect power cord
from site outlet.
2. Remove terminal hood (procedure 3).
3. Disconnect the following cables:
•
Keyboard cable from AJ2 on controller board (figure 6-12).
•
Touchpanel cables from AJ3 on controller board (figure 6-12).
•
Operator panel cable from AJ4 on controller board
(figure 6-12).
•
Board-edge connector from monitor display board.
62940007
6-61
4. If installed, remove internal modern board from monitor
chassis (procedure 21).
CAUTION
When removing and installing monitor
chassis, use care so that neck of
crt does not bump video board. Tilt
chassis so that neck is down, and do
not handle crt by its neck. Also
when installing chassis, use care to
prevent pinching touchpanel cables.
5. Remove six mounting screws (figure 6-20) and carefully
lift monitor chassis and place on a firm surface.
6. Disconnect three cables from power supply board.
7. Remove power-supply-board ground wire from ac entry panel.
8. Remove six mounting screws (figure 6-21) and remove power
supply board.
Figure 6-20.
6-62
Monitor Chassis Removal
62940007
Figure 6-21.
Power Supply Board kemoval
9. Install replacement power supply board in reverse procedure of preceding steps and set SO/60-Hz switch on
replacement board to appropriate position (60-Hz position
for a domestic unit; 50-Hz position for an international
unit). After installation, check and adjust power supply
voltages (procedure 9).
Procedure 11 - Replacing Line Filter, Power-Cord Receptacle, and
Stepdown Transformer
To replace line filter or power-cord receptacle:
1. Power off terminal (procedure 1).
2. Unplug power cord from site outlet and from receptacle on
ac entry panel.
3. Remove terminal hood (procedure 3).
62940007
6-63
4. If present, disconnect external cables from PHONE, LINE,
and VIDEO OUT connectors on ac entry panel.
5. Disconnect two slide-on connectors from LOAD side of line
filter (figure 6-22).
6. Disconnect cable from video board that goes to VIDEO OUT
connector.
7. Remove all ground wires from ground terminals on ac entry
panel except the one going to power cord receptacle.
8. Remove two screws that mount ac entry panel to terminal
base (figure 6-22).
AC ENTRY COVER PLATE
(PRESENT IF THERE IS
NO INTERNAL MODEM)
POWER-CORD
RECEPTACLE
jj
GROUND SPRING
BROWN
WIRE~
BLUE
03941-3
6-64
WIRE~
Figure 6-22.
AC Entry Panel Removal
62940007 B
9. If internal modern is present, raise entry panel and
remove two screws and lockwashers securing telephone-jack
PC board to panel. Then remove ac entry panel from unit.
10. Remove two screws securing line filter to panel.
Then
disconnect remaining slide-on connectors when filter is
free.
11. If replacing power-cord receptacle, remove receptacle
ground wire from panel.
Then remove two screws securing
receptacle.
12. Install replacement filter or receptacle in reverse procedure of preceding steps. When connecting slide-on connectors to filter, make sure that brown wires are
installed on top terminals and blue wires on bottom terminals.
If internal modem is present, also be sure that
ground springs on telephone-jack board are firmly against
hood-mounting post in base when securing ac entry panel.
To replace stepdown transformer (applicable only to international units):
1. Power off terminal (procedure 1) and unplug power cord
from site outlet.
2. Remove terminal hood and bezel (procedure 3).
3. Remove monitor chassis per procedure 10, steps 3 thru 5.
4. Disconnect from ON/OFF circuit breaker two slide-on connectors coming from transformer.
5. Disconnect transformer connector from Jl on power supply
board and remove connector ground wire from ac entry
panel.
6. Disconnect transformer ground wire from ac entry panel.
7. Remove four mounting screws and lift transformer from
unit (figure 6-23).
8. To install replacement transformer, perform reverse of
preceding steps.
62940007 B
6-65
03606
Figure 6-23.
Stepdown Transformer Removal (Applicable Only to
International Units)
Procedure 12 - Replacing ON/OFF Circuit Breaker
To replace ON/OFF circuit breaker:
1. Power off terminal (procedure 1) and unplug power cord
from site outlet.
2. Remove terminal hood and bezel (procedure 3).
3. Squeeze four side clips and remove circuit breaker out
opening (figure 6-24).
4. Disconnect four slide-on connectors from circuit breaker.
5. Refer to figure 6-24 and connect slide-on connectors to
replacement breaker. Make sure connections are correct.
6-66
62940007
6. position breaker so both terminals marked LINE are toward
front of unit, then press into opening until side clips
engage.
7. Replace bezel and hood (procedure 3).
TO POWER SUPPLY BOARD
(DOMESTIC UNIT)
OR
TO STEPDOWN TRANSFORMER
(INTERNATIONAL UNIT)
FROM
LINE FILTER
CIRCUIT
BREAKER
(REAR VIEW)
SIDE CLIPS
(TWO ON EACH SIDE)
03940
Figure 6-24.
ON/OFF Circuit Breaker Replacement
Procedure 13 - Replacing Keyboard Assembly
a~d
Components
To replace the keycaps, spacebar, keyboard, or keyswitches, perform the following steps as applicable:
To replace a keycap or spacebar:
1. Turn terminal power off (procedure 1).
2. Remove keycap or spacebar using chip removal tool (part
number 87365900).
3. Install new keycap or spacebar and press down until
firmly seated.
62940007
6-67
To replace keyboard:
1. Turn terminal power off (procedure 1) and disconnect
power cord from site outlet.
2. Remove terminal hood and bezel (procedure 3).
3. Disconnect keyboard cable from AJ2 on controller board.
4. Remove four screws mounting keyboard assembly to terminal
base (figure 6-25).
5. Install new keyboard assembly by reversing preceding
steps.
NOTE
Check that bezel does not bind key
caps on top or sides before tightening down.
If binding occurs, remove
bezel, loosen keyboard and reposition slightly.
03506-2
Figure 6-25.
6-68
Keyboard Assembly Removal
62940007 B
To replace a keyswitch (including Spacebar keyswitch), refer to
figure 6-26 and do the following:
1. Turn terminal power off (procedure 1) and remove keyboard
assembly as previously described in this procedure.
2. Remove keycap as described earlier in this procedure.
CAUTION
Use a low wattage soldering iron to
avoid damaging PC board. A vacuum
action desoldering tool or solder
wick is suggested when unsoldering
the switch.
3. Unsolder the contacts of switch and push on thickest contact to dislodge switch assembly from PC board and keyboard housing. Once switch assembly is free, pull it
from housing.
4. Position replacement switch assembly so its contacts are
aligned in same way as old switch.
5. Press replacement switch assembly down into opening of
keyboard housing until it bottoms. Make sure contacts
are exposed on back of PC board.
6. Solder each contact to PC board.
7. Replace keycap and reinstall keyboard.
CONTACTS (2)
Figure 6-26.
62940007
03632
Keyswitch Replacement
6-69
Procedure 14 - Replacing Operator Panel
To replace operator panel:
1. Power off terminal (procedure 1) and disconnect power
cord from site outlet.
2. Remove hood and bezel (procedure 3).
3. Remove touchpanel (procedure 20).
4. Remove screw holding alarm (figure 6-27).
5. Remove three screws holding operator panel.
6. To replace operator panel, perform reverse of preceding
steps and set selection switches on replacement panel to
same settings as on old panel.
REMOVE
THREE
SCREWS
c.L..._-\-_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _->.'1
\EMOVE ALARM SCREW
03508-1
Figure 6-27.
6-70
Operator Panel Removal
62940007
Procedure 15 - Replacing Operator Panel LEDs
To replace an LED on operator panel:
1. Turn terminal power off (procedure 1) and disconnect
power cord from site outlet.
2. Remove operator panel (procedure 14).
CAUTION
Use a low wattage soldering iron to
avoid damaging PC board. A vacuum
action desoldering tool or solder
wick is suggested when unsoldering
the LED.
3. Unsolder two leads of faulty LED and remove LED from
board.
4. Install replacement LED so that flat side is oriented the
same as other LEDs (figure 6-28).
If replacing CRI (ERR
LED), leave the space shown in figure 6-28 between base
of LED and surface of board.
For other LEDs, butt base
of LED against board.
5. Solder each lead to board.
6. Reinstall operator panel (procedure 14).
XMT
DSR
~_______________~PCBOARO
o IBBB888BBBBI
o
r----------,
:
o
I
ERR LED MOUNTED
rW1TH SHOWN SPACE
2.54 mm (0.10 in) --,
0.-
[{
~~--OTHER LEOs MOUNTED FLUSH
03509-2
Figure 6-28.
62940007
LEDs on Operator Panel
6-71
Procedure 16 - Replacing BRIGHTNESS Control
To replace BRIGHTNESS control:
1. Power off terminal (procedure 1) and disconnect power
cord from site outlet.
2. Remove hood and bezel per procedure 3, steps 1 through 8.
3. Pull BRIGHTNESS knob off and remove nut and washer from
front of BRIGHTNESS control.
4. Loosen touchpanel mounting clip below rear of BRIGHTNESS
control and move clip to one side.
5. Remove BRIGHTNESS control by carefully working it around
touchpanel and touchpanel mounting clip.
6. Slide pieces of clear sleeving back to expose lugs on
control.
CAUTION
Use a low wattage soldering iron. A
vacuum action desoldering tool or
solder wick is suggested to unsolder
wires from control.
7. Place replacement control next to bad one. Unsolder
wires one at a time and resolder to corresponding lugs on
replacement control.
8. Slide pieces of sleeving over lugs.
9. If an international unit, slip ground-wire lug over
control bushing.
10. Carefully install control in bezel opening by working it
around touchpanel.
11. Reposition touchpanel mounting clip and tighten.
12. Attach nut and washer to front of control.
13. Attach BRIGHTNESS knob and replace bezel and hood per
procedure 3.
6-72
62940007 B
Procedure 17 - Replacing Protective Door
To replace protective door on operator panel:
1. Power off terminal (procedure 1).
2. Remove hood and bezel (procedure 3).
3. Remove black bezel insert by breaking two metal keepers
that hold both bezel pieces together.
4. Insert new door and fasten both bezel pieces back
together using two new keepers.
5. Reinstall bezel and hood (procedure 3).
Procedure 18 - Replacing Matched Yoke/CRT or Display Board
To replace matched yoke/crt or display board:
1. Power off terminal (procedure 1) and disconnect power
cord from site outlet.
2. Remove terminal hood (procedure 3).
3. Disconnect touchpanel, operator panel, and keyboard
cables from controller board (figure 6-12).
4. Disconnect board-edge connector from display board.
5. If installed, remove internal modem board from monitor
chassis (procedure 21).
CAUTION
When removing and installing monitor
chassis, use care so that crt neck
is not bumped against video board.
Tilt the chassis so that neck is
down, and do not handle crt by its
neck. Also when installing chassis,
use care to prevent pinching touchpanel cables.
62940007
6-73
6. Remove six screws shown in figure 6-29 and carefully lift
chassis out of terminal. Set on firm surface to work on.
WARNING
Use care when handling crt as rough
handling, nicks, or scratches can
cause crt to implode. Wear heavy
gloves and safety goggles.
7. Refer to figure 6-29 and disconnect the following:
•
Socket from end of crt.
•
Yoke cable from S02 on display board.
•
If removing yoke/crt, also disconnect anode lead from
crt (fold back suction cup on two sides and squeeze to
remove) •
pm,,,===-'
1',
(l -ANODE
LEAD
~fa.:;~ REMOVE
~
.
I
-..
DOUBLER/'__~__~--~~~------~
BLEEDER ASSEMBLY
DISPLAY BOARD
CONNECTOR
Figure 6-29.
6-74
CRT Removal
62940007
To remove yoke/crt:
8. Remove four screws at front of chassis (figure 6-30) and
lift crt up and out.
9. Install replacement yoke/crt per reverse of preceding
steps, and after installation, perform video adjustments
(procedure 4).
REMOVE
REMOVE
03&10-1
Figure 6-30.
Front Chassis View
To remove display board:
10. Disconnect flyback-transformer lead and white wire of crt
socket from doubler/bleeder assembly.
11. Remove two screws and remove board.
12. Install replacement board per reverse of preceding
steps. When replacing board, align tongue on board with
slot on chassis. After installation, perform video
adjustments (procedure 4).
62940007
6-75
Procedure 19 - Replacing Voltage Doubler/Bleeder Assembly
To replace the voltage doubler/bleeder assembly, refer to figure 6-29 and do the following:
1. Turn terminal power off (procedure 1) and disconnect
power cord from site outlet.
2. Remove hood (procedure 3).
WARNING
Lethal voltages exist in the leads
of the doubler/bleeder assembly.
After turning off power, a period of
60 seconds is required for these
voltages to bleed off.
3. Disconnect anode lead from crt (to remove, fold back suction cup and squeeze).
4. Disconnect input lead from flyback transformer.
5. Remove doubler/bleeder assembly by loosening bottom
mounting screw and removing top screw.
If proper length
screwdriver is not available, remove yoke/crt (procedure 18) to access screws.
6. Replace assembly by reversing preceding steps. Be sure
to attach white wire of crt socket and black wire of
assembly to top mounting screw.
Procedure 20 - Replacing Touchpanel
To replace the touchpanel:
1. Turn terminal power off (procedure 1) and disconnect
power cord from site outlet.
2. Remove terminal hood and bezel (procedure 3).
3. Remove touchpanel from bezel by loosening four mountingbracket screws (figure 6-31).
6-76
62940007
LOOSEN
·
••
I
I
to
:-
.'
.:
I
_Q.J
. -....
......1 ~
"
LOOSEN
05512-1
Figure 6-31.
Touchpanel Removal
To install replacement touchpanel:
4. Place touchpanel in bezel opening with ribbon cable at
top.
5. Align touchpanel so that etched alignment marks on panel
(figure 6-32) are lined up with marks on bezel. Alignment marks on bezel are hard to see. Use a lead pencil
to highlight them.
6. Carefully tighten four brackets while holding touchpanel
to bezel. Check that touchpanel remains correctly
al igned.
7. Check front of touchpanel for dimples in mylar. Any
dimples caused by tightening touchpanel down too tight
may cause errors and requires loosening.
62940007
6-77
8. Reinstall bezel (procedure 3).
9. Connect touchpanel connectors to controller board (figure 6-12).
10. Reconnect power cord and turn power on.
11. Run resident diagnostics (procedure 2) and test touchpanel operation when alignment pattern appears. Also
check that border of alignment pattern coincides with
touchpanel grid. If misalignment exists, perform video
adjustments (procedure 4).
12. Place defective touchpanel in shipping carton which held
replacement (figure 6-32).
13. Replace hood (procedure 3).
TOUCHPANEL
SHIPPING
CARTON
~-....,-~~
TYPICAL
CROSS SECTION
OF PANEL IN
CARTON
ALIGNMENT
MARKS (10)
02319-2
Figure 6-32.
6-78
Touchpanel Alignment Marks
62940007
Procedure 21 - Replacing Internal Modem Board
TO replace internal modem board:
1. Power off terminal (procedure 1) and disconnect power
cord from site outlet.
2. Remove hood (procedure 3).
3. Disconnect wires from terminals on modem board.
4. Disconnect modem cable from controller board (figure 6-12).
5. Remove modem board by cutting cable ties and pulling
board off retainers.
6. Install new modem board by pressing board over retainers
and installing new cable ties (part number 94277400).
7. Refer to labeling and reconnect wires to J2, J3, and J5
terminals on modem board.
8. Connect ground wire to board GND terminal.
9. Reconnect modem cable to controller board (figure 6-12).
10. Replace hood (procedure 3).
Procedure 22 -
D~fining
Acceptable Display Quality
The following information is for reference whenever definitions
of acceptable display quality are required.
Brightness - the retrace and nonintensified scan lines should
not be visible. The intensity should be set high enough for a
display to be seen from at least 1 meter (3 feet) away, but not
so high that displayed data changes in size and symbols appear
defocused.
Focus - focus is to be adjusted for best resolution in the
center of the screen.
62940007
6-79
orthogonality and Linearity - with the resident-diagnostic
alignment pattern displayed (figure 6-33), the pattern should
appear square and coincide with the outer edges of the touchpanel grid. The point where the diagonals intersect should be
an equal distance from each edge of the square.
If the pattern
does not meet these requirements, perform procedures 4 and 5.
03633
Figure 6-33.
orthogonality and Linearity of Alignment Pattern
procedure 23 - Installing Numeric Cluster
1. Use the keycap removal tool (part number 71493510) to
remove the 12 keycaps boxed on figure 6-34. Make note of
the location of each key as a reference for installing
new keyset.
2. Install the numeric cluster keyset (part number 15632988)
so that each numeric cluster key is in the same location
as the corresponding key removed in step 1.
3. Keyboard assembly is now part number 51940852 and not
product number 51940851.
•
6-80
62940007
02854-4
Figure 6-34.
62940007E
Numeric Cluster on Keyboard
6-81
•
I
I
Procedure
Page
Procedure
Page
Procedure
Page
1
2
3
4
5
6
7
8
6-37
6-37
6-42
6-45
6-49
6-50
6-52
6-54
9
10
11
12
13
14
15
16
6-58
6-61
6-63
6-66
6-67
6-70
6-71
6-72
17
18
19
20
21
22
23
6-73
6-73
6-76
6-76
6-79
6-79
6-80
Figure
page
Figure
Page
Figure
Page
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-9
6-10
6-39
6-42
6-43
6-43
6-44
6-48
6-49
6-51
6-52
6-54
6-13
6-14
6-15
6-16
6-17
6-18
6-19
6-20
6-21
6-22
6-23
6-24
6-56
6-57
6-57
6-58
6-59
6-60
6-61
6-62
6-63
6-64
6-66
6-67
6-25
6-26
6-27
6-28
6-29
6-30
6-31
6-32
6-33
6-34
6-68
6-69
6-70
6-71
6-74
6-75
6-77
6-78
6-79
6-81
Table
Page
6-1
6-2
6-40
6-46
6-82
62940007 E
PARTS DATA
7
This section contains parts data information for the terminal.
This includes a genealogy chart, spare parts lists, and assembly
drawings with assembly parts lists.
TABLE 7-1.
COLUMN HEADING
EXPLANATION OF COLUMN HEADINGS OF COMPUTERGENERATED ASSEMBLY PARTS LISTS
EXPLANATION
FIND NO.
Identifies an electrical or mechanical parton an assembly drawing. If more than
one listing appears for a find number, refer to LI, WK IN, and WK OUT.
LI (Line Item)
Gives a chronological or historical record of the addition of a new part to a find
number. For example, 01 indicates that the part was the first one used, and 02
indicates the second, etc. See also WK IN and WK OUT.
PART NUMBER
Gives the Control Data Corporation part identification. Use this number when
ordering replacements.
CD (Check Digit)
Gives the information-control system a means of cross-checking the correctness of
a part number.
QUANTITY
Lists the total number of a part required to complete an assembly. The vertical
line near the center of the column acts as a decimal point. Numbers to the left of
the line are whole numbers. Those to the right of the line are tenths, hundredths,
and thousandths.
UIM (Unit of Measure)
Indicates how the information-control system counts or supplies a part.
PART DESCRIPTION
Describes the physical appearance, type, or name of a part.
MC (Material Code)
Supplies additional descriptive data to the information-control system.
YLD (Yield)
A 2-digit number that indicates the usable portion of any quantity of parts
expressed as a percentage.
ECO NO. IN
Engineering Change Order that adds a new part to an assembly. See also WK IN.
ECO NO. OUT
Engineering Change Order that deletes a part from an assembly. See also WK OUT.
SIN (Serial Number)
Used to specify an ECO's effectivity by serial number.
WK IN (Week In)
Lists the date when manufacturing begins using a new part and when it is available
for parts replacement. For example, 7222 mea.'1S a part is available of the 22nd
week of 1972.
WK OUT (Week Out)
Lists the date when manufacturing no longer uses a part in building an assembly.
See also WK IN. Do not order a part after its week-out date.
0643-2A
62940007
7-1/7-2
3
0'1
N
\0
~
o
o
o
-...J
tzl
EC
c
50 HZ ONLY (CC629-B)
CABLE ASSY (POIER CONN)61408989
CABLE ASSY (VIDEO OUTPUT)61408444
CABLE ASSY
CABLE ASSY (DISPLAY LOGiC) ....... 6140B907
CA8LE ASSY (LOGIC SIGNALS).. .. .61408025
CABLE ASSY (D.C. POWER).
.61408024
CA8LE ASSY (A. C. INPUT).
.. .. SEE TABLE
CABLE ASSY (A.C. ENTRY)..
.SEE TA8LE
A.C. POWER CORD..
..SEE TA8LE
REFERENCE DOCUMENTS
CC62s-A.B FIMARE ERS ..
. 16042871
CC629-A.B ENGINEERINl SPEC .......... 16042866
OPTIONS
lOGIC SET.
CONTROLWARE (OOINlINE LOADED)
MF401-J 1ST-III ASCII CONTROLWARE ...... 15632600
B
MF402-J ISHII PLATO CONTROLWARE.
.. 15632603
40003-200 MENORY EXPANS I ON OPTI ON .
(XA243-A MEMORY EXPANSION OPTION
40003-201 MODEM .
....
(IA247-B PLATO COMM NETWORK MODEM
40003-220 TIMESHARE ROM.
(XA281-A TIMESHARE ROM OPTION
799-11 MODEM CABLE.
(YA254-B MODEM CABLE OpTi ON
66306847
15632060)
66306848
15632424)
66313034
15632587)
66313986
15832984)
NUMER I C CLUSTER OPTI ON ....................... 15632987
(YA266-A KYBO CONV KIT 156329B8)
UNLIU on.wJSI SHelfli.
. ...................... 62201052
1PERATORS OOIOE ...
. 62040006
HARIl'I1ARE MAINTENANCE MANUAL
(sm AlII SUPPCIIT) ...
62940007
SPARE PARTS LISTS:
XA244-A TmlCll PANEL....
. 6630B094
11247-B MODEM OPT I ON
66313919
11243-1 MEMORY EXPANSION.
66308096
11281-A TIMESHARE ROM..
66313918
CC629-A. B. C.O ASCII 1ST-II .... 66312053
YA266-A NUMERIC CLUSTER ...... 66315463
DESIGN VERIFICATION TEST PLANI
REPORT ......................... 66312365
PRODUCT VERIFICATION TEST PLANI
REPORT .......................... 66312366
CONTROLWARE: .. .
.. ........... .
ASCII/PLATO ERS ............... . 16042872
ASC II IGRAPH I CS ERS ........... .. 16042873
ASCII/TIMESHARE ERS ........... . 16042874
PLATO ERS ..................... . 16042843
TITLE
DIMIMIIONS All ... 'MOIIS
tOtllNCII
A
-...J
I
w
•
GENEALOGY
1ST-ill 50
~
60 HZ
•
t.
-
REVISION RECORD
REV
"
-.J
liST-II I
(SEE TABLE)
I
01:00
I
l
I
-
DESCRIPTION
ECO
RElEASED CLASS
1'920"'8
DATE
DRFT
"f(
It-M-Bl
CHICO
-
APVD
~:/-
I HPC
I
ASCII 1ST-II
(SEE TABLE)
I
I
EC
I
TOUCH PANEL ASSY
15B32D621IA244-A
I
EC
I
ASCII IST-II
(SEE TABLE)
I
TLA
I
I
I:C ENTRY ASSY
J
6140BBB7
:
1
I
CD ASS! POIER
SUPPLY IAGO
90446293
I I I
CONTROLWARE (OOINLINE LOADED)
IF401-) 1ST-II I ASCII CONTROLWARE ...... 15&32600
IF402-) 1ST-III PLATO CONTROLWARE ..... 1'5632603
B
60 HZ
PROO-IOOEL NO.
HPC
EC/EQUIP. 10. NO,
110-1
6631494&
110-10
66314948
40003-24
66314951
151i32913!1ll!2!I-C
50 HZ
I
DISPLAY
51916942
15632976
15165428
15165427
61406910
NONE
61408982
61409025
Y
PROGRAMMED EROl
KEYBOARD ASSY
I
01940652
I
REFERENCE DOCUMENTS
CC629-A.B FlRMIARE ERS ....................... 16042B71
CC629-A.B ENGINEERING SPEC .................. 16042B&&
LOGIC SET ................................... &2201052
OPERATORS GUIOE ........................... ;. B204000&
HARolARE MAINTENANCE MANUAL (SITE AND SUPPORT) 62940007
CONTROL DATA 110 TERMINAL SUBSYSTEI USER
INSTALLATION ANO 01AGNoST1CS .ANUAL .......... &2940U4
SPARE PARTS LIST:
6&313933
OPTIONS
40003-201 100EI ; .......................... 6630&84B
(XA247-B PLATO COIIM NETIDRK MODEl 15632(24)
40003-220 TIMESHARE ROM ....................
(Xl261-A TIIESHARE ROIOPTION
799-11 MODEl CABLE ........................
(!A254-1 100EI CAlLE
IA244-A TOUCll PANEL ......................
XA247-B MODEl OPTI ON .....................
IA2Bl-A TIMESHARE ROM .....................
CC629-A.B,C.0 ASCII 1ST-II ...............
DESIGN VERIFICATION TEST PLANIREPORT ........
PRODUCT VERIFICATION TEST PLANIREPORT .......
CONTROL DATA 110 TERMINAL DIAGNOSTIC OISK/
MANUAL VERIFICATION TEST PLANIREPORT ........
CONTROLIARE:
6&313034
15&325B))
&&3139B6
15632914)
ASCII/PLATO ERS .............................
ASCH/GRAPHICS ERS ..........................
ASCII/TIMESHARE ERS ........................ ,
PLATO ERS ........ : .........................
UNLESS OTHERWiSe SPECIFIED
DIMENSIONS ARE IN
PLACE
±
\0
TOLERANCES
ANGLES
PlACE
±
±
M::------
01:00
-
I
I
A
-.J
I
BB3DB094
66313919
66313916
66312053
66312365
&B3123B&
&6314959
16042872
1&042173
16042874
1&042843
40003-24
B6315001
15632974
o
o
o
t:zl
I t
151i32975!1ll!2!1-O
A.C. POIER CORD
ASSY
INPUT)
ASSY
ENTRY)
I
o ASSY OPERATOR
PANEL DADO
90460877
110-1
66314947
TLA
CABLE
(A. C.
CA8LE
(A. C.
Ir
HCo ASSY VIDEO CON'
oABo
90446215
TRANSFORMER
5191B790
I
CD ASSY VIDEO ~J
CoNT MODULE 11TH
F1RMIARE 9044639
ASSY CONTROL
MODULE OACo
90460661
-~
CABLE ASSY
CABLE ASSY (DISPLAY LOGIC) •••• 61406907
CABLE ASSY (LOGIC SIGNALS) .... &140B025
CABLE ASSY (D. C. PoIER) ....... &140B024
CABLE ASSY (A.C. lNPUT) ....... SEE TABLE
CABLE ASSY (I.C. ENTRY) ....... SEE TABLE
A. C. POIER CORD ............... SEE TABLE
~
'"N
I
W
50 HZ ONLY (CCB29-0)
CABLE ASSY (POWER CONN) 614oB9&9
CABLE ASSY (VIDEO OUTPUT) 61406444
.
-
I
I
DETACHED LISTS
:--------
OWN
CHKO
ENGR
D. SAND
1/-"
II.UJJ:1~
lItQ~
MFG
11?¥':""
APVD
~
eQUIP.NO.
11,1t..&-
t,?.~1
/2'1'81
"'' ' '
·1tI",-
@8CONTRPlDATA
COR/'OR/ITION
TITLE
J
GENE.ALOGY CD 110
IST-DI. 50 ~ 100 HZ
"*-E3- cl 15920 IOWGNO 00315439 OF/
CC~2.9-C/D
ANGLE
THIRD
PROJECTION
SCALE
L
SHEET /
,
~PARE
A~CII
NOTES,
PART~ LI~T
I~T-II BA~IC'TERMINAL
1o.Quantities shown are those .used per' equipment. Quanti ties
EQUIPMENT
CC62'1A laO
CC62'1B 50
CC629C 60
'-,'-.,-,.-,.-,-v.-{;(;62 90 50
EQUIPMENT CONfIGURA TOR
1.5632331
15632333
15632973
15632975
HZ
HZ
HZ
HZ
TOP LEVEL AS~V
15632332
15632334
15632974
15632976
CC62'1B are under Heading B
CC629C are under Heading C
CC6290 are under Heading 0
'~~ _____________~___________l~C~OO~E~'DLE_NT
__l_~_E_E_T____~2_______l~~-'D_OC~UMUE~NUT~N~O~'~
_______i_R_E~~I'U__~
15'120
SPL
6631;>n."
COIq'OI!/\JION
Indicated parts are incluced as part of Keyboard Assy 51'140851. This Keyboard is the same as
PiN 51940852 with the exception, PiN 51940851 does not have the numeric cluster Keyset.
Indicated part is included as part of Display PC Assy 51'11'1804.
6.
5.
Indicated parts are included as part of OABD PC Assy '1044102610 for CC629A/B or Assy 90446390
for CC629C/0.
Indicated pants are included as part of OACD PC Assy '10460881·
7.
Xformer re quired for CC629B/0 only. Not used on CC62'1A I
8.
Other Applicable
~1'l1'1707
'I.
c.
Reference Documents,
- CDC PIN to vendor PIN cross Ref PL for Display Assy.
663080'14 66313'11'1
I
~:
-
~PL
for Touch Panel O'ption I ...'. ItI/5fw-1 15920
TA
DOCUMENT NO.
SHEET
CC629-A'B
1 Of 2
/
SHEET REVISION STATUS
REVISION RECORD
2 11
REV
PO
100 Itlc
ECO
~t'.. "5·$~
DRFT
RELEASED CLASS
!J
1\ IA A /347/-9f,
-h!cLE//5,
'!TLE
~C~H~KDL-~le~I~~~=4~~~/'~~~~lDA~
SPARE PARTS LIST
PREF'X'
I
I
DOCUMENT NO
RAEV
r~~.~NF~GG'=~T.~JI,.~Y,~13~.I<~~~~I~;-".~.?~:'C~OR/'ORI\~~~JIO~N~.
_ _ _rt.::Ec:..M-,O.:.:R-'Y-=E:.:.X.:..P:.:.A:.:.N::SI=ON~O::P'-T:.:I::O::N-'--_ _ _-+-~-'S"-P-'L'--..l_.!!6.!!61ii3!"O£8"-09..c6"------...L---i
~
rmST USED ON
,
. . . . .""T
or;. H.Itl,.....tt.
APPR
.
'S
6-27-7t
CeDE 1:'=:"1
SHEET
1i'!' •• ~I _ _ 15920
FC816A/B
1 of 2
SHEET REVISION SUTUS
REVISION RECORD
2
1
ECO
REV
-
~O"l.IO
ORFT
DESCRIPTION
RELEASED CLASS
DATE
APP
6-
NOTES. 1_ Quantity shown is that used per equipment.
2. EQUIPMENT CONFIGURATOR--------15632060
TOP LEVEL ASSErtBLY -----------15632061
r
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PART
NO.
IDENTIFICATION
1
~5153821
QUANTITY REQUIRED
CODE IDENT
15920
DOCUMENT NO.
SHEET
UNIT
OF
MEA5
8
I I
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2
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NOMENCLATURE
OR DESCRIPTION
DETACHED LISTS
IREA
66308096
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4116 RAM {16KJ
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62940007
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MFG
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EQUIPMENT CONFIGUIUTOR ------------15632567
TOP LEVEL ASSEMBLY ----------------15632588
I
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NO.
11
QUANTITY REQUIRED
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15632588
1
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15'1C!O
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66313918
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~~~~~~"~~I:ROm
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66315463
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CC629A1B
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SHEET REVISION STATUS
1 IREV
?
IA iA IA
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SPL
FIRST USED ON
,g./~ C~;~~~NT
It
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SPARE PARTS LIST
NUMERIC CLUSTER OPTION
l'II-S1
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1/3720-6.0
IDRFT
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DATE
APP
1-- 1,,-9-81 i,4'u:J.
--
i-- f--
NOTES, 1.
2.
----
Quantity shown is that used per equipment.
EQUIPMENT CONFIGURATOR -----------_ 15632987
TOP LEVEL ASSEMBLY ---------------- 1'5632988
r
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15920
QUANTITY REQUIRED
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NO.
1
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1
I
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1.
2.
This document lists the CDC part numbers which make up the Numeric Cluster conversion kit for
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Part number 66315465 is the CDC part number which makes up ~~ entire keycap
set (includes numeric cluster).
. I
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15632988
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1
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R25
RIO
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43
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4.
WITH THE
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PC IC 74LS393 OL 48 BIN COUNTER
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94360258!1
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PC RES FXO FM 402 OHM IP 1/4W
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009 01
94360295 13
1
PC RES FXO FM 976 OHM IP 1/4"
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PC liES FM 2.7K OHM 1/4W CAIIBON
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9436032411
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9431103411 1 4
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PC RES FXO FM 3010 OHM Ip 1/4.
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9436035515
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PC RES FXO FM 3140 OHM II' 1/4.
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016 01
9436035819
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PC RES FXO FM 4020 OHM IP 1/4"
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017 01
943110362!1
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PC RES FXO FM 4420 OHM IP 1/4.
P
018 01
94360369 1 6
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PC RES FXO FM 5230 OHIII II' 1/4.
P
P
019 01
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1
PC RES FKO FM 5900 OHM IP 1/4W
020 01
9436037817
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PC RES FXO FM 6490 OHM IP 1/4"
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01
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024 01
94360]87 8
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PC RES FXO fM 8060 OHM IP 1/4"
P
025 01
94360388 6
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PC RES· FXO FM 8250 OHM IP
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P
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94360389 4
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PC RES FXO FM 8450 OHM IP 1/4"
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027 01
94360393
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PC RES FXO FM 9310 OHM IP1/4W
P
0211 01
028 02
94360333 2
94360329 0
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PC RES fXD FM 2210 OHM IP 1/4"
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P
029 01
94360400
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PC RES fKO FM 10.0K OHM Ip 1/4"
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030 01
94360344
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PC RES fXO FM 2870 OHM IP 1/411
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031 01
94360"09 0
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032 01
94360416 5
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9436U429 8
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035 01
94360431 4
1
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036 01
94360435 5
1
PC RES fXO FM 23.2K OHM IP 1/4.
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037 01
94360441 3
1
PC RES FXO fM 26.1K OHM IP 1/4W
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038 01
94360445 4
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94360448 II
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94360382 9
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210
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....
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94360468i6
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94360489[2
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94360'93[4
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94360500i6
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P
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94402156[7
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056 01
94402172 [4
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057 01
94402161[7
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088 01
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089 01
94402148 4
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8101
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13756
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13850
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C2,C3
Cl
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COMMENT SHEET
\
MANUAL TITLE:
Information Systems Terminal III Hardware
Maintenance Manual (Site and Support Information)
PUBLICATION NO.:
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