62949100D_40003 203_PLATO_Floppy_Disk_Subsystem_Hardware_Maint_Mar1981 62949100D 40003 203 PLATO Floppy Disk Subsystem Hardware Maint Mar1981
62949100D_40003-203_PLATO_Floppy_Disk_Subsystem_Hardware_Maint_Mar1981 62949100D_40003-203_PLATO_Floppy_Disk_Subsystem_Hardware_Maint_Mar1981
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6Z949l00
I':J c:\ CONTR.OL DATA
\!:I r:J CORPO~TlON
CDC(!) 40003-203/204/205/206
PLATOC
I
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HEADLOAD. TIMING (HLT)
Figure 4-5.-
4-10
External Wiring of the CTC for Head-Load Timing
62949100
\
'''--_/
",
C
/'
(~
The other two CTCs of the integrated circuit are wired to allow
them to be used for timing as a real-time clock. There is a
circuit in the power supply that generates a pulse for every
period of line voltage that occurs. This pulse is wired to the
input of one of the CTCs (CTC2). The output of this CTC (CTC2)
is wired as the input of the fourth CTC (CTC3). Together, these
two CTCs provide a programmable down-counter 16 bits long
(figure 4-6).
CTC2 ZERO COUNTS
POWER
SUPPLY
60-Hz 150-Hz LINE CLOCK
-
COUNT
LINE CLOCKS
CTC2
-
COUNT CTC2
ZERO COUNTS
CTC3
-..
--
'W
o
ONE HALF OF THE CTC
INTEGRATED CIRCUIT
Figure 4-6.
03800
External Wiring of the CTC for Real-Time Clock
Note that it is possible to use the four CTC circuits in the CTC
IC as four distinct timers by ignoring the input enables
(selected only by program control) and use the four CTCs to
count down the 4-MHz clock input to the IC.
C)
95i9 INTERRUPT CONTROLLER
The 9519 interrupt controller can manage up to eight maskable
interrupt request inputs, resolve priorities, and supply up to
four bytes of programmable response for each interrupt. The
controller board only uses seven of these interrupts. They are:
0
(-~)
'-_..-/
o
•
•
•
•
•
•
•
•
IREQ7 Not Used
IREQ6 Line Clock
IREQ5 DMA End of Processes
IREQ4 1791 FDC Interrupt
IREQ3 Parallel I/O Data Out (to the terminal)
IREQ2 Parallel I/O Data In (from the terminal)
IREQI Read Status (to the terminal)
IREQO Write Command (from the terminal)
The interrupt network is shown in block diagram form in
figure 4-7.
62949100
4-11
9519
INTERRUPT
CONTROLLER
LINE CLOCK
9'517
~-EOP
f\
l\-
DMA
fDATA OUT
PARf;5EL - DATA IN
1791
Foe
~
-COMMAND
I REO 6
I REO 5
+
" I REO 4
" I REO 3
" I REO 2
J"I..
CHANNEL -STATUS
SIGNALS
f'.
-INTERRUPT
~
\. ...
>
>IOK
GROUP
INTERRUPT
I REO I
?
f\
zao
(INTERRUPT
J REO 0
El
EOl
L EI
~
INTERRUPT
'.
CTC
03801
Figure 4-7.
Flexible Disk Interrupt Network
EXTERNAL INTERFACE PIN ASSIGNMENTS
Tables 4-1 and 4-2 list the external interface pin assignments
for "the parallel I/O channel and slave drive unit channel,
respectively. Both of the interfaces use standard TTL-to-TTL
circuits and logic levels.
For external signal definitions,
refer to the applicable hardware maintenance manual listed in
the preface.
INTERNAL CONNECTOR PIN ASSIGNMENTS
Figure 4-8 shows the internal connector pin assignments for the
flexible disk subsystem.
For signal definitions, refer to the
9406 Flexible Disk Drive Hardware Maintenance Manual (publication
number is listed in the preface).
4-12
62949100
'
o
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Cj
TABLE 4-1.
PARALLEL I/O CHANNEL PIN ASSIGNMENTS
·---·--·----·--·-----·--·----r-----1l\ctIVe--·r .
Signal
I In/Out I Level I Pin
·----·-·-·----·-·-·-·------,------r------T
Data 20
I
Both
High
J6, J7-l5
Data 21
I
I
Both
High
J6, J7-l6
Data 22
Both
High
J6, J7-l7
Data 2 3
Both
High
J6, J7-l8
Data 24
Both
High
J6, J7-2l
Data 2 5
Both
High
J6, J7-22
Data 2 6
Both
High
J6, J7-23
Data 27
Both
High
J6, J7-24
+5 V (Terminator only)
o
(~.
,
U
o
Number
J6, J7-l3
Address 2 0
In
High
J6, J7-2
Address 21
In
High
J6, J7-3
Address 22
In
High
J6, J7-4
Address 2 3
In
High
J6, J7-5
Address 24
In
High
J6, J7-6
Not Used (in this device)
J6, J7-7
Not Used (in this device)
J6, J7-9
-External Write
In
Low
J6, J7-8
-External Read
In
Low
J6, J7-l0
-External Interrupt
Out
Low
J6, J7-l2
Not Used (in this device)
J6, J7-ll
Ground
J6, J7-l
Ground
J6, J7-l4
Ground
J6, J7-l9
Ground
J6, J7-20
Ground
J6, J7-25
".'
(~
62949100 C
4-13
I
...... ~--......,
/
/
TABLE 4-2.
SLAVE DRIVE UNIT CHANNEL PIN ASSIGNMENTS
Signal
In/Out
Active
Level
Pin Number*
-Read Data Composite
In
Low
J5-2
-Head Load
Out
Low
J5-4
-Track 00
In
Low
J5-6
-Index.
In
Low
J5-8
-Low Write Current
Out
Low
J5-l0
-Step
Out
Low
J5-l2
-Direction (Increase)
Out
Low
J5-l4
/~
(
-Write Enable
Out
Low
J5-16
-Write Data
Out
Low
J5-3l
-Unit Select 1
Out
Low
J5-33
-Unit Select 2
Out
Low
J5-29
-Unit Ready Status 1
In
Low
J5-50
-Unit Ready Status 2
In
Low
J5-48
-Write Protect
In
Low
J5-42
Out
Low
J5-40
In
Low
J5-38
-Head Select (low
high
= head
= head
1;
0)
-Write Fault
.....
(~
1,,_- "
i-'"
I
-Write Fault Reset
Out
Low
J5-36
-Diskette Type (Two Sided)
In
Low
J5-34
*Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, 18, 20, 22, 24, 26, 28,
30, 32, 35, 37, 39, 41, 43, 45, 47, and 49 are at logic
ground; pins 19, 21, 23, 25, 27, 44, and 46 are open.
4-14
62949100
\..
·_'"
C
I
I
c
NEUT
2
2
SAF GNO
3
3
HOT
AC ENTRY
66309318 60 HZ
6630931950 HZ
I
r-~
P8
-J3
P3
r-I
'--- r--
8ACKPLANE
98MD
90446143
J2
!2-- ~
o
1
1
8
4
5
8
4
5
AC HOT
HOT
NEUT
NEUT
SAf GNO
' - - f--'
~
POWER SUPPLY
9BKO
90446140
h
13
P
12
N
3
C
13
P
12
N
8
8
J
3
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7
7
H
4
0
I
A
2
H
4
0
I
A
2
B
B
5
E
6
f
9
K
14
R
15
S
10
L
5
E
6
L--
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9
K
14
R
15
S
10
l
P2
r-- f-1
1
8
4
5
I
8
4
5
I
'-- l DC
+24V
+24V
+24V
+24V
+12V
+12V
+5V
+5V
+5V
+5V
5V
-5V
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
GNO
1I NE SYNC
LINE SYNC
f----'
PI
JI
r - I-13
P
12
N
3
C
13
P
12
N
3
C
B
B
J
J
7
7
H
4
0
I
A
2
8
5
E
6
H
4
0
I
A
2
8
5
E
F
6
F
9
K
14
9
K
14
R
R
15
15
S
10
L
S
10
L
'-- e-
I
2
3
4
5
6
7
8
9
10
II
12
13
14'
15
16
I
2
3
4
5
6
7
8
9
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24
25.
26
21
28
17
18
19
20
21
n
30
31
J2
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
22
23
24
25
26
27
28
29
3D
31
32
33
34
3~
36
31
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
'-- ~
+12V
+12V
-5V
-5V
GND
GNO
+5V
+5V
r~ANNr
nA A ,0
eI
10
CHANNEL DATA , I
~nATA?-2
CHANNEL DATA 23
CHANNEL DATA 2'
-HRMINAI INHRRIIPT
CHANNEL DATA 25
- 00 TRACK 00
CHANNEL DATA 16
20
CONTROLLER
9BEO
90446124
-OOIlN~
CHAiiNFI DATA 11
- nn INnn Pili ~r
-CHANNEL WR I TE
_nn liN
R any?
-r.waNNrl Rran
-00 WRIH~
AnnRr~~ ,0
C~ANN
--nn nl~HTH Typr
CHANNEL ADDRESS 21
- 00 WRI TE FAULT
r~ANNr
3D
annRn~,2
- 00 RAW READ
CHANNEL ADORE SS 23
- 00 WRITE FAiilT~
r~-annRr~4
-00 WRITE DATA
-00 UNIBtlFr.T 1
- 00 HEAD SELrCT
-00 UNIT SELECT 2
- 00 HEAD LOAD
40
-00 LOW WRllE CUR
-00 WRITE ENABLE.
- 00 STEP
50
-00 DIRECTION
LINE SYNC
GNO
GNO
+5V
+5V
-
03932
Figure 4-8.
62949100
Internal Connector Pin Assignments
4-15
o
DIAGRAMS
G
This section contains logic and schematic diagrams for the controller board (9BED), power supply (9BKD), backplane (9BMD), and
ac power wiring of the flexible disk subsystem. For logic diagrams on the drive unit, refer to the 9406 Flexible Disk Drive
Hardware Maintenance Manual (publication number is listed in the
preface).
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CHANNEl ADDRESS 25
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SCHE.MATIC DIAGRAM (98MD)
(FDD CONTROLLER BACKPLANE)
A
-CHANNEL EXTERNAL READY
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BLACK
"- I -
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FAN MOTOR
16 GA
300V MAX
MOTHER BOARD
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DISK DRIVE MOTOR
50 HZ 220·:240 VAC
AC ENTRY
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(11'1 )
FAN MOTOR
18 GA
300V MAX
MOTHER BOARD
ilCD",
~~~
~~ ...
""
.....M
OTE
DISK DR I VE MOTOR
ALL WIRES ARE 18 GA. 600V UNLESS OTHERWISE MARKED
5-22
62949100
,
MAINTENANCE
6
This section provides information necessary to perform on-site
maintenance on the flexible disk subsystem. The material presented assumes familiarity with the PLATO system and basic maintenance techniques including use of common CE tools and test
equipment. The maintenance' information covers checks, adjustments, removal, and replacement of the field-replaceable components as directed by the associated structured analysis method
(SAM) listings for the subsystem.
Information is organized
under the following major headings:
•
General Maintenance Information
•
Diagnostic and Corrective Maintenance
GENERAL MAINTENANCE INFORMATION
o
The following paragraphs provide information that the customer
engineer should be familiar with before performing maintenance
on the terminal. Topics discussed are:
•
Suggested Emergency Maintenance Procedure
•
Safety Precautions
•
Maintenance Tools and Materials
•
MOS Circuit-Handling Precautions
•
Maintenance Aids
•
Location of Major Assemblies
SUGGESTED EMERGENCY MAINTENANCE PROCEDURE
The following procedure provides suggested 'steps forthecustomer engineer (CE) to follow when responding to a customer
request for maintenance on the subsystem.
o
o
62949100
6-1
Before Leaving For Customer Site
Before leaving for the customer site, the CE should call the
customer and talk to the person operating the subsystem at the
time the malfunction occurred, then:
1. Determine the following:
a. Type of symptoms subsystem exhibited to indicate that
a malfunction occurred.
b. Whether subsystem is operating and what symptoms, if
any, are present when an attempt is made to operate.
2. Decide course of action to take, for example:
a. Go to customer site and begin troubleshooting.
(,
... ....
,
,,-
b. Deduce that subsystem itself is probably not at fault
and most likely cause of problem is either terminal
communication lines or a power reduction or loss.
In
either case, CE can notify responsible party (common
carrier or customer) of problem.
c. Decide ~hat an error in operating procedure,' rather
than equipment failure, is probably cause of mal function, and notify customer of correct operating
procedure.
3. If a site maintenance trip is req~ired, CE should try to
determine a probable cause for failure and gather necessary tools, manuals, and spare parts that may be needed.
Upon Arriving At Customer Site
Upon arriving at the customer site, the CE should locate the
appropriate supervisory personnel and again talk to the subsystem operator concerning the malfunction, then:
1. Visually inspect subsystem for correct input/output and
power cable connections~
2. Verify that a malfunction does exist, and then begin to
troubleshoot subsystem.
6-2
6'2949100
C~'
_/
('
3. After source of malfunction is corrected, CE should:
o
a. Run diagnostic self-test routines and appropriate
PLATO DIAG tests to ensure that subsystem is
operational.
b. Demonstrate to customer that subsystem is now operating properly within system.
SAFETY PRECAUTIONS
WARNING
Observe the following safety precautions at all times.
Failure to do
so may cause equipment damage and/or
personal i~jury.
o
c
•
Hazardous voltages exist, in the subsystem.
attempt repair unless qualified to do so.
Do not
•
Exercise caution any time checks or adjustments are being
made to terminal when power is applied.
•
Always turn power off and disconnect ac power cord when
removing/replacing components or cables.
MAINTENANCE TOOLS AND MATERIALS
-_
(~
The maintenance procedures require the use of metric tools and
common CE test equipment. No special materials are required.
MOS CIRCUIT-HANDLING PRECAUTIONS
Special handling procedures are necessary for printed-circuit
cards containing metal-oxide semiconductor (MOS) integrated
circuits. These ICs are susceptible to damage from static
electricity. Observe the following precautions when handling
the controller board:
•
Turn power off before removing/installing or otherwise
connecting/disconnecting any circuits.
G
u
62949100
6-3
•
Ensure that any item that comes in contact with card is
electrically grounded.
•
Touch metal chassis frame to bleed off any accumulated
static charge before handling card and continue to touch
chassis while removing/installing card.
•
Handle card only by a noncircuit portion.
and circuit paths must not be touched.
•
Place card in a special conductive envelope whenever card
is removed from chassis.
Connector pins
MAINTENANCE AIDS
There is no scheduled maintenance for the subsystem.
In the
event of failure, the primary maintenance aids are the voltage
LED indicators, self-test routines, and DIAG Flexible Disk Diagnostic tests. These aids in conjunction with the SAM
troubleshooting listings are structured to isolate the failure
to a field-replaceable component/assembly and to provide a procedure number reference to the applicable maintenance procedure
to be used for correcting the malfunction. Refer to the Diagnostic and Corrective Maintenance heading for organization of
this material.
/"---',
(
.
",
..... /
,~.
(
,_
...../
LOCATION OF MAJOR ASSEMBLIES
Figure 6-1 shows the location of the major assemblies within the
subsystem.
/~
I
'\.....
DIAGNOSTIC AND CORRECTIVE MAINTENANCE
The following paragraphs describe the diagnostic self-test routines, the DIAG Flexible Disk Diagnostic tests, provide an
explanation of the SAM format used for troubleshooting information, and describe the organization of the SAMs and procedures.
DIAGNOSTIC SELF-TEST ROUTINES
The subsystem contains nine diagnostic tests stored in ROM. The
starting address is at 000016.
Diagnostic execution is under
control of the diagnostic control switches on the controller
,~
I
6-4
62949100
r",
~,-)
U
board.
Status of the diagnostic tests is indicated by the four
LEDs also located on the controller board.
Refer to section 2
for a detailed description of the diagnostic control switches
and LED indicators., The following paragraphs provide a description of the various test routines.
o
CONTROLLER
BOARD~
(MASTER UNITS ONLY)
03927-1
NOTE: COVER AND FRONT
PANEL REMOVED
FOR CLAR ITY.
C)
Figure 6-1.
Location of Assemblies in Subsystem
LED Test
All four LEDs light momentarily following a power application
and after a master reset to test the indicators.
Test 0 - ROM Checksum
o
o
The ROM checksum routine tests ROM for the correct checksum
value of the stored contents.
62949100 C
6-5
I
Test 1 - RAM Test
Test 1 checks RAM memory (as specified by the diagnostic control
switches) for correct operation. This test uses the diagnostic
control switches and LEDs to isolate to a failing RAM chip. The
first level of error detection is to a specific RAM bank, then
to the failing chip within that bank.
Test 2 - Interrupt Generator
Test 2 checks for interrupts by performing writes and reads to
the available registers in the interrupt controller IC.
Test 3 - Flexible Disk Controller
Test 3 checks the flexible disk controller IC by performing
writes and reads to all available registers in the IC.
Test 4 - DMA Test
Test 4 reads data from the flexible disk controller IC data
register to memory using DMA channels land 3.
Test 5 - I/O Loopback Test
Test 5 tests the basic I/O capabilities by interfacing the
input/output registers and transferring data via the I/O data
bus and checking status.
Test 6 - CTC Test
Test 6 checks the counter/timer circuit by loading a count value
and determining that .the proper interrupt is generated at
count O.
6-6
62949100
.
\ .........
o
u
Test 7 - Writing and Reading the Disk
Test 7 checks for a ready disk drive, then seeks side 1,
track 76, last sector and executes writes and reads using the
disk DMA channel.
This surface area is reserved on all diskettes; therefore, no alteration is made to stored disk data.
DIAG FLEXIBLE DISK DIAGNOSTIC TESTS
o
Testing can be performed using downline-loaded diagnostics from
the PLATO system.
Use lesson DIAG to call up the flexible disk
diagnostic tests. This diagnostic loads and tests information
via the terminal parallel I/O channel.
Two modes are tested,
DMA operations and interrupt routines.
Refer to checkout information in section 3 for details of diagnostic operation.
EXPLANATION OF SAM FORMAT
G
o
A SAM listing is a specialized format used to present troubleshooting information in a logical manner.
Figure 6-2 illustrates the basic SAM format.
Any applicable assumptions or
advisory information is provided in the header information of
the SAM.
To interpret a SAM, start at the top of the page and determine
the response for the first question posed. Then follow the
appropriate dashed line beneath the Y or N response. Answer the
next question, etc. until the action numbers are reached.
Perform the action(s} listed in that column in numerical order
to correct the problem.
ORGANIZATION OF SAMs AND PROCEDURES
The SAMs and maintenance procedures are organized in two
separate subsections of this manual as follows:
•
SAM Listings (section 6A)
•
Maintenance Procedures (section 6B)
o'·
0
I
62949100 C
6-7
I
FIRST TROUBLESHOOTING
QUESTION
FIRST ACTION TO BE
PERFORMED FOR A NO
RESPONSE TO STEP 002
"
SAM FTPI-I
, YES OR NO RESPONSE
FOR QUESTION BEING
ASKED
SAM STEP NUMBER
(USED FOR REFERENCING ONLY)
:[QD
002
(YN) Do all equipments in
Iilr
(procedure FTPl)7
I I
I Y N
I I I
~CD-r
003
FIRST ACTION TO BE
PERFORMED IN THIS
COLUMN
\'-.
UNDERLINE INDICATES
THE LAST ACTION OF A
NUMERICAL SEQUENCE
OF ACTIONS IN A GIVEN
COLUMN
004
II
on correctly)
Does any equipment
1':1) Check that termina~c power cord is plugged into
site outlet and that site power is availahle.
I I I
I
I
I
I
I
I
I
I
I
Check for tripped main circuit breaker on ac entry
assembly.
• If tripped and unable to reset, disconnect all
loans from ac entry assembly one at a time and
retry to isolate load fault.
• If circuit breaker still trips with loads disconnected, replace ac entry assembly.
005
Y N
Does display power on OK?
006
I I
I 1
1-
Go to SAM FTP3.
007
Y N
Does printer power on OK?
I I
008
I
@
Go to SAM FTP6.
Is there a form feed power problem?
Terminal equipments power on OK.
UNDERLINE ALSO USED
TO INDICATE THAT
ONLY ONE ACTIUN IS TO
BE PERFORMED
011
012
013
' '--- .'
Go to SAM FTP7.
Y
I
I
I
I
I
I
I
N
I
I
I
I
1
I
I
Does resident diagnostic execute following power on
application to terminal? Note - diagnostic LEOs Ll
and L2 should light during execution ann clear at
successful completion.
Check that diagnostic control switches are correctly
set. See section 2.
~@
INDICATES SAM IS
CONTINUED ON
PAGE 2, COLUMN B
62986800,
4A-l
03680
Figure 6-2.
6-8
SAM Example
62949100
c.,)
CI
o
SAMS
SECTION 6A
o
C)
c~,
C)
\'-..00
SAM 1-1
SAM 1
POWER FAULT ISOLATION
This SAM assumes that the ac power cord is plugged into a live
site outlet and is firmly seated at the rear ac connector of the
unit.
001
Y N
Does unit circuit breaker trip when power is applied?
Allow time to cool and retry before proceeding with
additional steps.
I
I
I
002
Y N
003
o
Are fan and drive motor running?
I
1
Check that connector J3 from ac entry panel is
plugged into backplane.
I
I
004
2
I
I
005
006
3
~
Check/replace circuit breaker.
I
5
008
Y N
010
Check power cord for continuity.
I
4
007
009
Check internal ac wiring connections (see ac power
wiring schematic in section 5).
Replace fan or drive unit (procedure 6) as applicable.
Are all LEDs on power supply lit?
I I
I 1
Replace power supply (procedure 5).
I
1
Check that correct power supply voltages are present.
Voltages should be:
• +5 V +0.1 V} Test points at front edge of
• -5 V +0.1 V
controller board.
• +12 V-+O.l V
.+24 V +0.5 V
Check at J4 of drive unit (see
procedure 5)
NOTE
The +5-V and +24-V outputs are adjustable.
Refer to procedure 5.
If correct voltages
are not obtained, replace power supply
(procedure 5).
2 2
A B
C)
62949100
6 A;"" 1
SAM 1-2
A B
1 1
011
012
013
I
I
I
I
I
I
I
I
I
Y N
Is Power indicator (LED 2 0 ) lit on controller board
I I (master uni ts only)?
I I
I 1 Replace controller board (procedure 4).
1-
1
Internal power checks are OK.
014
1
Check internal wiring visually for shorts.
015
2
Unseat power supply board and retry. If circuit breaker
no longer trips, replace power supply (procedure 5).
016
3
Unseat controller board (master units only) and retry. If
circuit breaker no longer trips, replace controller board
(procedure 4).
017
4
Disconnect J4 from disk drive unit and retry. If circuit
breaker no longer trips, replace disk drive unit (procedure 6).
I
I
I
I
I
I
I
I
I
018
5
Refer to ac power wlrlng schematic in section 5 and disconnect wiring/connectors from ac entry panel, line filter,
and transformer back to circuit breaker to isolate load
fault.
Replace defective item.
,/~,
i
\,-_.-/'
6A-2
62949100
SAM 2-1
~I
SAM 2
INTERNAL DIAGNOSTIC CHECKS (MASTER UNITS ONLY)
This SAM isolates faults detected by the internal diagnostic
tests. Refer to sections 2 and 3 for information on Diagnostic
Control Switches and LED Indicators, and to the Diagnostic
Self-Test Routines heading in section 6 for test descriptions.
C~)
001
Y N
002
I
I
I
I
I
I
I
003
I
If no LEDs light, check for power fault per SAM 1.
I
2
004
N Y
005
I I
I I
I I
I
I
006
N Y
I
(j
o
I
I
I
Do all four LEDs at front of controller board light
momentarily following a power application or a master
reset?
Replace controller board (procedure 4).
Is Error LED (2 3 ) lit and other LEDs off?
a ROM Checksum Test 0 error.)
I
Replace ROM chips, zao chip, or controller board
(procedure 4).
Is Error LED (2 3 ) and Power LED (2 0 ) lit?
a RAM memory Test 1 error.)
(Indicates
I
I
I
I
I
I
I
I
007
I
NOTE
Verify that switches 24 and 2 5 are
set correctly for number of RAM
banks present. See section 3, Subsystem Installation.
Replace controller board (procedure 4), or isolate and
replace bad RAM chip as follows:
I
I
I
I
I
I
I
I
I
I
o
o
(Indicates
o Place switch_ 21 up and switch 22 down to display
failing RAM bank in LEOs 20 through 22 (bank 0 is
row A, bank 1 is row B, bank 2 is row C, and bank 3
is row D).
0
Place switch 22 up to display failing bit {chip)
within bank in LEOs 2 0 through 22 (bit 0 is at
location 6, bit 7 is at location 1.. See figure 6B-4
for board layout).
0
Replace failing RAM chip and rerun internal diagnostic tests.
2
A
62949100 C
6A-3
SAM 2-2
A
1
1
008
N Y
009
1 1
I' 1
1 1
1
1
010
N Y
011
1 1
1 1
1 1
1
1
012
N Y
013
1 1
1 1
1 1
1
1
014
N Y
1 1
1 I
015
I 1
1
I
016
N Y
1 I
I I
017
1 1
1
1
018
N Y
1
I
I
1
019
Is Error LED (2 3 ) and Write LED (21) lit?
an Interrupt Generator Test 2 error.)
(Indicates
Replace controller board (procedure 4).
Problem with
9519 Interrupt Controller IC or support logic.
Is Error LED (2 3 ), Write LED (2 1 ), and Power LED (2 0 )
lit?
(Indicates a Flexible Disk Controller Test 3 error.)
Replace controller board (procedure 4).
Problem with
1791 Flexible Disk Controller IC or support logic.
Is Error LED (2 3 ) and Read LED (22) lit?
a DMA Test 4 error.)
Replace controller board (procedure 4).
9517 DMA IC or support logic.
(Indicates
Problem with
Is Error LED (2 3 ), Read LED (22), and Power LED (20)
lit?
(Indicates an I/O Loopback Test 5 error.)
Replace controller board (procedure 4).
support logic.
Problem with
Is Error LED (2 3 ), Read LED (22), and Write LED (21)
lit?
(Indicates a CTC Test 6 error.)
Replace controller board (procedure 4).
CTC IC.
Problem with Z80
Is Error LED (2 3 ), Read LED (2 2 ), Write LED (2 1 ), and
Power LED (2 0 ) lit?
(Indicates a Writing and Reading the
Disk Test 7 error.)
Verify correct diagnostic control switch settings (see
I section 3 of manual).
1
2
020
"'-- ...
'
Verify that flexible disk is properly formatted.
I
021
3
I
I
I
022
4
J
5
023
Verify that flexible disk is Write Protected (slot
covered).
If not Write Protected, set diagnostic control
switch 2 3 up.
Replace controller board (procedure
4)~
Replace disk drive unit (procedure 6).
I
I
I
3
(:.~
A
6A-4 .
62949100
(:~-~
C~)
A B
SAM
2-3
2
U
I,
024
N Y
I
I
I
I
025
Check that flexible disk is installed in drive unit
(procedure 2) and access door is closed.
1
I
I
026
Replace controller board (procedure 4).
2
I
027
Is Error LED (2 3 ) off, and Read LED (22), Write
LED (21), and Power LED (20) lit?
(Indicates that
controller logic is communicating with drive unit, but
test is not complete).
Disconnect slave unit (if applicable).
3
I
G
028
4
029
N Y
030
031
Replace disk drive unit (procedure 6)
I I
I 1
II
Is Power LED (2 0 ) lit and other LEDs off?
Indicates successful completion of resident diagnostic.
Diagnostic test error.
isolate failure.
Begin at step 001 of this SAM to
u
o
C)
(=-:J
62949100 C
6A-S
I
SAM 3-1
SAM 3
DIAG FLEXIBLE DISK DIAGNOSTIC CHECKS
This SAM provides fault isolation information for problems
detected by the DIAG Flexible Disk Diagnostics. Use of this SAM
assumes that the internal self-test diagnostics execute without
error. Refer to section 3, Checkout, for the procedure to be
used to load and execute the DIAG Flexible Disk Diagnostics.
001
002
003
N Y
I I
I I
I 1
I
I
I
N Y
I
Is there a terminal log-in or diagnostic loading
problem?
Refer to applicable terminal hardware maintenance
manual for troubleshooting information (see preface
for publication number).
Is there a Disk System Not Ready to Load or
Incorrect Load message displayed?
I
004
1
I
I
005
2
I
I
Try loading again by entering option 12 of display
prompts.
Check that power is applied to flexible disk subsystem
and last peripheral device connected to parallel I/O
channel.
I
006
3
I
I
I
I
007
4
I
I
008
5
I
I
I
009
6
Check that no flexible disk is installed in drive unit
of master or slave and perform a long master reset
(press and hold Master Reset switch longer than three
seconds). (l)
Check that Device Address switch of flexible disk subsystem is set correctly.
Check seating of I/O cable between terminal and
flexible disk subsystem and check that terminator is
installed at last peripheral device.
Reseat controller board.
I
010
7
Replace controller board (procedure 4).
I
011
8
012
N Y
Refei to applicable terminal hardware maintenance
manual for troubleshooting information (see preface
for publication number).
Is there a Bad Seek message displayed?
I I
2 2
A B
6A-6
62949100
c
o
u
A B
SAM 3-2
1 1
I
013
1
Verify that side of flexible disk entered for seek and
track number are valid (must seek only to side 0 on a
single-sided disk and to a maximum track number of 76).
014
2
Check that a correctly formatted flexible disk is being
used.
I
I
I
I
I
015
3
possible bad flexible disk, try another disk.
I
016
4
Reseat controller board.
I
017
5
Replace controller board (procedure 4).
I
o
018
019
7
020
N Y
022
023
024
025
026
o
027
028
029
030
031
032
033
034
o
o
Replace disk drive unit (procedure 6).
I
021
o
6
I
I
I
I
I
Refer to applicable terminal hardware maintenance
manual for additional troubleshooting information.
Is there a Comm Line test error?
I
1
Reseat controller board.
I
2
Replace controller board (procedure 4).
N Y
I
I
I
I
I
I
Is there a Device Address test error (Status Error)?
I
1
I
I
2
Check that device address entry being made matches
Device Address Switch setting.
Replace controller board (procedure 4).
N Y
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Is there a Media Test error?
Replace the diskette with known good formatted diskette.
Check power supply voltages per procedure 5.
Replace controller board (procedure 4).
Replace flexible disk driver (procedure 6).
N Y
I
I
I
I
I
I
I
I
Is there a Test Number of Sides test error?
I
1
I
I
2
Check flexible disk part number to verify that disk has
number of sides being assumed.
Reseat controller board.
I
3
Replace controller board (procedure 4).
I
3 3
A B
62949100 C
6A-7
•
A B
2 2
035
I I
I 4
I
Replace disk drive unit (procedure 6).
036
N Y
Is there a Head Loaded Test error?
037
038
039
040
I
I
I
I
I
I
I
I
1
"
'-
Reseat controller board.
I
2
Replace controller board (procedure 4).
I
3
N Y
I
Replace disk drive' unit (procedure 6).
Is there a Terminal Interrupt Test error?
Reseat controller board.
041
1
042
2
I
I
I
043
Replace controller board (procedure 4).
044
4
045
N Y
047
048
049
050
051
052
053
I
1
Is there a Line Sync Test error?
Reseat controller board.
I
2
Check seating of internal cables.
I
3
Replace controller board (procedure 4).
I
4
Replace power supply (procedure 5).
N Y
Is there an Index Pulse Test error?
I I
I 1
I I
I 2
11
(~"
',,--.
Reseat controller board.
6A-8
"
Replace controller board (procedure 4).
DIAG Flexible Disk Diagnostics executed OK.
(1) If a long master reset or power application is performed
with a system flexible disk installed, internal diagnostics will autoload from disk instead of terminal.
Therefore, flexible disk must be removed from drive
unit(s), or Switch 23, or Switch 27 must be up in
order to bypass test 7 or to bypass internal diagnostic
execution, respectively.
.
•
---',
Verify correct terminal operation.
If other devices
are connected to parallel I/O channel, verify that
interrupts work correctly to those devices.
I
I
I
046
,,-
.\.....
3
I
I
I
I
I
I
I
I
I
Check seating of parallel I/O cable and terminator
assembly.
62949100 C
('
~
SAM 3-4
A B
3 3
056
057
058
059
060
061
I
I
I
I
I
I
3
Replace controller board (procedure 4).
I
4
Replace power supply (procedure 5).
N Y
Is there an Index Pulse Test error?
I I
I 1 Reseat controller board.
I I
I 2 Replace controller board (procedure 4).
11
DIAG Flexible Disk Diagnostics executed OK.
o
o
c)
(~)
(1) If a long master reset or power application is performed
with a system flexible disk installed, internal diagnostics will autoload from disk instead of terminal.
Therefore, flexible disk must be removed from drive
unites), or Switch 2 3 , or Switch 27 must be up in
order to bypass test 1 ~r to bypass internal diagnostic
execution, respectively.
62949100
6A-9
(-~"
\" .... " .-"
c~)
(--)
c)
PROCEDURES
SECTION 6B
(j
o
~-
,
Proc~~~.E.~_.!._=_£~~~r AE.Pl !.£~ t io~/Remov~!.
This procedure assumes that the flexible disk subsystem is
plugged into the site ac outlet.
WARNING
Applying improper voltage to the
flexible disk subsystem can damage
components. Read label on back of
unit for proper voltage and
frequency.
NOTE
Correct operation of the IST parallel
interface channel requires that power
be applied to the last peripheral
device on the channel.
Last device
supplies +5 V to the terminator.
c)
1. First apply power to terminal .. Then apply power to disk
subsystem by pulling forward on Power On/Off switch
connecting rod (early units) or by pressing Power ON/OFF
switch to ON po~ition (later units).
See figure 6B-l.
o
Figure 6B-l.
o
o
Power On/Off Switch Location
2. Power on is indicated by LED 2 0 being lit (master units
only) •
62949100 C
6B-l
3. Remove power by pushing Power On/Off switch connecting
rod in (early units) or by pressing Power On/Off switch
to Off position (later units).
PLoc~~~~~2
- Flexible Disk Installation/Removal
Install flexible disk in drive unit per the following:
1. Apply power to disk subsystem (procedure 1).
2. Press door latch to open access door (figure 6B-2).
ACCESS DOOR
(OPEN)
WRITE-PROTECT SLOT
(WRITING ON FLEXIBLE DISK
IS DISABLED WHEN UNCOVERED)
DOOR LATCH
\....._ .../
(
\,-
0389.
Figure 6B-2.
6B-2
Diskette Installation/Removal
62949100
(~::,
3. Remove flexible disk from storage envelope.
(j
NOTE
If information is to be written onto
disk, Write-Protect slot must be
covered with tape that is opaque to
infrared light.
4. Hold flexible disk so that Write-Protect slot is to left
and slide disk into drive unit until solidly seated.
5. Close drive access door by pressing down on door until
latcheo.
o
6. To remove disk, press door latch to open door and remove
disk from drive.
Place flexible disk in storage envelope.
NOTE
Care should be taken in handling the
flexible disks.
Recommendations are:
• Do not use lead or grease pencils
when writing on flexible disk
jacket label as these items
deposit flakes.
Remove flexible
disk before writing on jacket.
o
• Do not fasten paper clips to
flexible disk jacket edges.
• Do not touch disk surface exposed
by jacket slot.
(
---.,
o
• Do not attempt to clean disk
surface in any manner.
• Keep flexible disk away from
magnetic fields and ferromagnetic
materials that may be magnetized.
• Protect flexible disk from
liquids, dust, and metallic
substances.
• Always place flexible· disk in its
protective jacket when not in use.
• Store flexible disks loosely in a
vertical position, not stacked.
r--.
(
V
'\
62949100
68-3
Procedure 3 -'Front Panel and Cabinet Hood Removal/Replacement
To remove the front panel or cabinet hood, refer to figure 6B-3
and perform the following:
1. Turn subsystem power off (procedure 1).
2. To remove front panel, remove two screws from panel and
tip bottom of panel forward to release.
3. To reinstall front panel, engage retaining slots at top
of panel, then tip panel down and install mounting screws.
4. To remove cabinet hood, first remove front panel, then
remove four screws from Nylon feet at bottom of unit and
two screws at rear of unit.
5. When reinstalling cabinet hood, install two screws at
rear of unit first before installing bottom screws and
Nylon feet.
CABINET HOOD REAR
MOUNTING HARDWARE~
\
..
..
------- at._._
-.---------~==------
\.. .. '
FRONT PANEL
MOUNTING HARDWARE
CABINET HOOD BOTTOM
MOUNTING HARDWARE
03892-1
Figure 6B-3.
Front Panel and Cabinet Hood Mounting Details
....... "
6B-4
62949100
('
\"'--
-
o
(j
Procedure 4 - Controller Board Removal/Replacement
Perform the following steps to remove/replace the controller
board and/or RAM, EROM, and Z80 chips. See figure 6B-4 for
board layout.
1. Turn subsystem power off (procedure 1).
2. Remove front panel (procedure 3).
3. Release controller board extractors and slide pc board
out of unit.
4. Remove master reset push button and install on replacement board.
This button is eccentric which allows for
some adjustment.
This adjustment is performed in step 6
of this procedure.
o
,
'
(BANK 3)
(BANK2)C
(BANK I) B
(BANK 0) A I
',
0
l
l
Dl
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o
03933-1
Figure 6B-4.
Controller Board Layout
5. When installing a replacement controller board, verify
that device address switch* and diagnostic control
o
o
*Normally set to address 7 if there is only one flexible disk
unit connected on the parallel I/O channel.
62949100 C
6B-5
•
switches are set correctly for subsystem operation (see
section 3 for switch settings).
If RAM options are
installed on a controller board that is being replaced,
transfer RAM chips to new controller board. Locations
for RAM options are:
I
•
1st RAM option - locations Cl, C2A, C2B, C3, C4A, C4B,
C5, and C6.
•
2nd RAM option - locations 01, 02A, 02B, 03, 04A, 04B,
OS, and D6.
•
3rd RAM option - locations AI, A2A, A2B, A3, A4A, A4B,
AS, and A6.
6. Slide controller board in and replace front panel
(procedure 3) •
7 • Rotate master reset push button unit until best fit is
achieved.
/,,...,"-- .......,
(
\.........
Procedure 5 - Power Supply Removal/Replacement
This procedure describes removal/replacement of the power supply
assembly. See figure 6B-5.
1. Turn ,subsystem power off (procedure 1).
2. Remove front panel (procedure 3).
3. Release power supply board extractors and slide assembly
out of unit.
4. After installing a replacement power supply assembly,
perform voltage adjustments as follows:
•
+5-V Adjustment
a. Connect meter leads as follows:
Master units- Attach meter leads to +5-V and
GNO test points at left front edge of controller
board.
Slave units - Remove disk drive unit from
cabinet by pulling drive unit forward until free
of slides. Set drive unit on its side, rotated
to the left, to allow access to connector J4 at
rear of drive PC board. Check that board connectors are seated firmly. Connect + meter lead
to J4 pin 2 (+5 V) and - meter lead to J4 pin 3
( ground)
(------
'"
6B-6
62949100 C
b. Apply power to unit.
c. Adjust top potentiometer on power supply board for
+5 V +0.1 V.
+5V
TEST POINT
GND
TEST POINT
+5 V ADJUSTMENT
o
I
I
o
CONNECTOR J4
DISK DRIVE
PC BOARD
'.irn--_ _ _ _ D1SK DRIVE
UNIT
o
Figure 6B-5.
•
Power Supply Voltage Adjustments
+24-V Adjustment
a. Turn power off.
b. Remove disk drive unit from cabinet by pulling
drive unit forward until free of slides but cables
remain firmly attached. Set drive unit on its
side, rotated 90° to the left, to allow access to
connector J4 at rear of drive PC board.
o
u
c. Connect + meter lead to J4 pin 4 (+24 V) and - lead
to J4 pin 6 (+24-V return).
,r---,
62949100 C
6B-7
I
d. Apply power to unit.
e. Adjust bottom potentiometer on power supply board
for +24 V +0.5 v.
f. Turn power off, disconnect meter leads, and reinstall drive unit. Check that cables do not bind
when installing drive unit.
Procedure 6 - Disk Drive unit Removal/Replacement
Refer to figure 6B-6 and perform the following steps to remove/
replace the disk drive unit.
1. Turn
~ubsystem
power off (procedure 1).
2. Remove front panel (procedure 3).
CAUTION
Do not set disk drive unit down with
PC board at bottom. Damage to PC
components may occur.
3. Remove disk drive unit from cabinet by pulling drive unit
forward until free of slides. Set drive unit on its side
and disconnect three cables from rear of unit.
4. Remove slides and shields (figure 6B-6) from existing
drive unit. The shields are to be installed on the
replacement drive as follows:
•
When replacement drive is a master unit (FA50l-A,B
PLATO Master Flexible Drive), both side and bottom
shields must be replaced.
•
When using the slave unit as the replacement
(BR80l-A,B PLATO Slave Flexible Drive), only the side
shield must be replaced (figure 6B-6).
5. Verify that drive pulley on replacement drive unit is
installed correctly for 50-Hz/60-Hz operation as
required.
Pulley must be reversed to change the rotating
speed of drive unit. Refer to figure 6B-7 for details.
6B-8
62949100 B
(~
'\...- ...
("')
-.,/
c)
6. Verify that Unit Select switch (DIP switches 1, 2, 3, and
4) and Ready switch (DIP switches 5, 6, 7, and 8) are set
as follows:
I
•
Master Unit - DIP switch 1 and 5 ON, r.emaining
switches OFF.
•
Slave Un{t - DIP switch 2 and 6 ON, remaining switches
OFF.
7. Remove cardboard head-protective flexible disk from drive
unit if replacement unit is being installed.
AC POWER CABLE
o
CONTROLLER HOUSING
SLIDE
c)
UNIT SELECT/READY
SWITCHES
BOTTOM SHIELD
(PLATO MASTER FLEXIBLE DISK DRIVE FA501-A, B ONLY)
03931-2
Figure 6B-6.
62949100 C
Disk Drive unit Installation
6B-9
PC BOARD .
~MOUNTING HARDWARE
,~1
/.
i,
~~
~
~DISKDRIVE
PC BOARD
03613-4
Note - Refer to the 9406 Flexible Disk Drive Assembly
Hardware Maintenance manual for additional information
if needed (see. preface for publication number).
Figure 6B-7.
6B-IO
Drive Pulley Details
62949100
PARTS DATA
7
This section contains the spare parts lists, genealogy charts,
and assembly drawings for the flexible disk subsystem.
Parts
data for the 9406 Flexible Disk Drive unit is contained in a
separate publication (see the preface for publication number).
NOTE
Parts list information is provided
under separate dividers for the
pre-production and production units.
Common parts list information is also
provided under a separate divider.
(-)
Table 7-1 explains the column headings on the'asembly
parts lists.
TABLE 7-1.
EXPLANATION OF COLUMN HEADINGS ON ASSEMBLY PARTS LISTS
COLUMN HEADING
EXPLANATION
FIND NO.
Identifies an electrical or mechanical part on 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 assemhly. 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 means a part is available of the 22n,d
week of 1972.
WK OUT (Week Out)
Lists the date when manufacturing no longer uses a part in building an
See also WK IN. Do not order a part after its week-out date.
assembly~
OS4:S-ZA
C)
62949100
7-1/7-2
~'''''''
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PARTS DATA FOR PRE-PRODUCTION UNITS ONLY
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NOTES:
TOP LEVEL ASSEMBLY
J.5.322Q.,
1.5.3221.0
EaUIP"ENT CON'IGURATOR
e:~UIP"ENT
3.5.32205
".SOU .OHZ
1.51.3220.
50HZ
""5018
THIS SPt. APPt.IES ONLY TO AIB01. EQUIP"ENTS
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C:ClDIIDINT
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DOCUM.NT NO.
... '.Tao ,."......
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~ ________________________~~_1~Sw'~2Ia__~~
__
··_T__~2~______~~~P~t.~__~.~.~3~oa~'~2=3~________L-__~
NOTES:
1.
Th •••
a. A unit
~r~ •• re
the total requir.d for a unit with no option. install.d.
hAve 3 RAn options of
32 RAn IC. in the unit.
o
~ould
a
RAn Ie. for .ach option for a total of
"ind Numbe.-s J. th.-u 7 and J.'" .,.. fe,. the .,Bt:D
Can~ 1h,.
Board.
U•• 'ind NuMb.r a for the 'AS01A <.OHZ unit .nd
u•• Find Numaar '" for the FAS01B <50HZ unit}.
"ind NUlllb.,. 1.0 i. for the 50HZ AC Entry onl),-
"ind NUlllba,. 11. is the signal ~.bl. uaad to ~onn.et the PLATO ,l.xibl.
Disk Sub.y.taM to the IST Terminal.
On. of these d.v1ee. is ~equired on the l4S~ dev1~e on the Plata IST Pa,.all.l I/O
chann.l daisy enain oonf1gura~1on.
o
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PREFIX I DOCUMENT NO.
PLATO SLAVE fLEXIBl.,.E DISK
SPL
7'16-~vj
IL-IJ_.SooI
CODE IDENT
BR810A/B
15920
SPL
66308921
~ISHEET
FIRST USED ON
SHEET REVISION STATUS
IRE,s
1
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REVISION RECORD
2
3
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DESCRIPTION
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NOTES:
EQUIPI1ENT
EQUIPMENT CONfIGURATOR
BR810A 60HZ
15632207
BR810B 50HZ
15632208
THIS SPL APPLIES ONLY TO A/SOL EQUIPMENTS.
--C
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I
CONTRPLOo\TA
COOE IDENT
15920
I
TOP LEVEL ASSEMBLY
15632211
15632212
I
I
SHEET
2
/
SPL
DET ACHED LISTS
/DOCUMENT NO.
/
66308921
RE~
n
~------------------------~--------~--------------~----~----------------~--~
NOTES:
1.
&
.&
&
These parts are the total required for a unit with no options installed
Use find number 1 {60HZ Power Cord} for the BR810A {60HZ unit} and find number 2
{50HZ Power Cord} for the BR810B {50HZ unit} •
Use find number 3 for the 50HZ AC Entry only.
find number 4 is the Signal Cable used to connect the BR810A or BR810B to the
fA501A or fA501B.
\
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I
i
o
62949100
7-5
I
FIND
PART
NO. IDENTIFICATION
1
!-----
QUANTITY REQUIRED
~~ ~~
CODE IDENT
15920
I
I I
DOCUMENT NO.
SHEET
3
UNIT
OF
MEAS
SPL
bb308921
NOMENCLATURE
OR DESCRIPTION
1
0
60Hz Power' Cord
1.£;1.... £;42 ...
0
1
50Hz Power CorcJ.
51918789
0
1
Step down Transformer
4
Ib140897b
1
1
Slave Signal Cable
95587103
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1
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1. £;1.1... 11"1 £;1,
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SPECIFICATIONS,
NOTES, OR MATERIAL.
11.£;1.... 1;421;
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ENGINEERING SPECIFICATION
SPARE PARTS II ST.. .
.66308S23
SCHEIATIC DIA'UI (S8KO).
. S0446138
SCHEMATIC DIAGRAtil (S8ID).
.90446141
SCHEMATIC DIAGRAM (SBED).
. ..
904462?8
TITLE
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GENEALOGY CHAR":'r
PLATO MA.5r£R FlEXIELE DISK
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REFERENCE
OOCUMENTS
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ENGI NEER I NG SPEC I FI CATION.... .
SPARE PARTS LIST..
. .66308921
SCHEMAT I C DIAGRAM (98KD).
.. 90446138
SCHEMATIC DIAGRAM (98MD).
. .90446141
TITLE
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A A ,A A /2754-"11.
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DESCRIPTION
RELEASED CLASS
DRFT
ADD F/i': 7
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. _ _ _ _ _ ._ _ _. _ _ _ _ -IL.-_ _..L...__---'L----I
TOP LEVEL ASSEMBLY ----- 15632574
DET ACHED LISTS
Ci
I
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CODE IDENT
COfIlTIPlD"JA _________________________L_ _ _15920
_____
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NOTES:
1.
I
SHEET
2
______________
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SPL
~
____
DOCUMENT NO.
~
66313409
I
REAV.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __L_ _
~~
These parts are the total required for a unit 'with no options installed.
~ Find number Z is the Signal Cable used to connect the BR810A Or BR8lOB to the
FA50lA or FA50IB.
o
62949100
7-25
I
PART
FIND
NO. IDENTIFICATION
CODE IDENT
15920
I I
I
DOCUMENT NO.
S PL
SHEET 3
'UNIT
QUANTITY REQUIRED
66313409
NOMENCLATURE
OR DESCRIPTION
MEAS
1
1 <;H,<;II;:><;
1
2.
61408976
1
Slave Signal Cable
3
96837907
1
Circuit Breaker
4
77618000
1
flexible Disk Assy
90446140
1
9BKD Power Supply
6
901146143
1
9BMD
1
SPECIF ICA TIONS,
NOTES, OR MATERIAL
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5
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TOP LEVEL ASSEMBLY ----- 15632575
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DATE
/ / 9-:;-09." I/;'c.!,
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DESCRIPTION
1275.RK "A."::,'S'( 0140902X"IN AREA SHOWN PER
C.DC '.)PEC 1012150B,
.&
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2.3.
ON TAB 2.I,C.EIllTER WIRES AND srRAP AS SH0VIN.
L
SEC..TION
B-B
B
Jt
2S
(1:)
5
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,
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DETAIL
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2.
SEC.TION
TAB 21
STUD E2. DETAI L
Al~4P3
.
FLl
A
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(5
2,5 (4)
TAB 2.2.
STUD El DETA.IL
w
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TAB 22.
AC ENTRY ASSY, FLEX DISK
E:._
L.~~i
'
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.
BUILD ARC
I
DIY.
0860 1
,I"NONOI 1I
"SSEMILY NUMln
: CD
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61409021 :51
PAl' NUMI"
r
DWG.
BID
I
DISCI'"'ON
lAC ENTRY, FLEX DISK 60HZ
QUANTITY
CD MI
T
'liNT DATI
ASSEMBLY PARTS LIST I TIf-\JT-80
230
u/M
STATUI
I MC
I
STATUI DATI
A REl
'AI' DISCI,n,OH
Me
I
09-03-80 1
flO
ICO. NO. IN
'AGI
T
T
"ll CHANGE NO.
TT
OOOl~J;Zl
ING. lIS'.
FlU OAT.
FA501A
ICO. NO. OUT
10-07-80
SIN
WI IN
WK OUT
I
1
PC BRACKET SWITCH/FILTER/XFORM
P
1
PC COVER SWITCH/FILTER
P
1
PC FILTER RFI
P
15012408:9
I
2
PC BSHG, SNAP-IN .500 H/H .3810
e
007 01
44674034:2
I
1
PC CONN POWER RECEPT
P
008 01
15164917:5
1
2
PC MSCR HEX-LK PLN M5X8MM STL Z B
009 01
91976625:3
I
4
010 01
51809101:2
1
011 01
51809103:8
1
014 01
91975669:2
I
2
PC wSHR HETRIC SCREW SZ 3
a
015 01
44674036:7
1
3
PC CONN PWR RECPT
P
016 01
51797218:S
I
3
PC LUG, NO.IO CRMP-R 22-1SAWG
a
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94277400:1 1
1
PC STRAP, CBL TIE TYP 1 TO 5/S
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01S 01
51906200:4
1
3
PC CONT, SKT 20-14GA .l30n STR
P
019 01
52810001:1 9
2 833 FT WIR ISGA STRo BRN 600V UL PVC 'II
52810020\9
1
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01
71492952 !8
1002'01
71492953 !6
004 01
15164356:6
DOS 01
00
'1
I
1
1
1
1
1
PC MSCR PAN PHL M3X6HM
B
1
020 FT TAPE-WIRE HARKING CHAR 1
B
020 FT TAPE-WIRE HARKING CHAR 3
B
1
1
1
1
1
/
1
I
1
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'II
1
021 01
5190600116
1
1
PC CONN, 3 SKT PLUG FIG 1 NYLON
P
024 01
91975724:5
1
2
PC NUT HEXAGON SZ 5HH
B
025 01
9197567118
6
PC WASHER EX TOOTH SZ 5
B
PC W/L AC ENTRY 60HZ
0
1
1
I
026 01
61409023\1
027 01
52810006:8
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BUILD ARC
I
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I
10860 1
r,
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REF
ASSEMIL' NUMln
2 833 FT WIR 18GA STRo BLU 600V Ul PVC
0
'AI' NUMln
I
1 OWG. I
DIICI'"'ON
BID lAC ENTRY, FLEX DISK 60HZ
IIV.
61409021 :51
CO MI
I
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ASSEMBL Y PARTS LIST I 10-07-80
230
:c 1
'II
QUANTITY
U/M
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I
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MC
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STATUS DATI
I
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'AGII
00014321
I 21
ENG. lUI'.
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09-03-80 1 FA501A
ICO. NO. IN
Eeo. NO. OUT
FlU DAT!
1 10-07-80
SIN
WI IN
WI( OUT
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028 01
1
930830 04 17
2
PC SPLICES 22-16
w
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62201057!7
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95643231 :4
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5180910210
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PC SCH DUG SO/60HZ
0
PC LUG, Q-CONN 22-18AWG FIG 5
P
1
4
1
020 FT TAPE-WIRE HARKING CHAR 2
a
020 FT TAPE-WIRE HARKING CHAR 4
a
333 FT TaG, NO. 2 INS BlK Ul PVC
a
1
032 01
51809104!6
033 01
24528636 1 4
I
0027 TOTAL LINES
1
1
I
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1
I
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1
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11
1
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1
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1
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ASSEMBL Y PARTS LIST I
230
t-A'''''''' NU.....
II
DI"I"TlON
: CD I IIV. I DWC. I
61409022:31 BID
AC ENTRY, FLEX DISK 50HZ
PAl' HUMin
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CD "I QUANTITY U/"
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I MC StATUS
A REL
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I 'AC. I
1I
PI'NT DATI
10-07-80
I
STATUS DAU
I
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09-03-80
ICO. NO. IN
I
ING.
FlU (HANGI NO.
00014321
usr.
fill DAti
FA50IA
ICO. NO. OUT
10-07-80
SIN
WI( OUT
WI( IN
I
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i
,
1001 101
i002 '01
!
7149295218
I
1
PC BRACKET SWITCH/FILTER/XFORM
P
71492953 Ii6
1
PC COVER SWITCH/FILTER
P
004 01
15164356:6
1
PC FILTER RFI
P
005 01
1501240819
I
3
PC 6SHG, SNAP-IN .500 M/H .3610
6
007 01
446H034! 2
1
PC CONN POWER RECEPT
P
PC MSCR HEX-LK PLN M5X6MM STL Z
8
I
I
I
I
008 01
1516491715
I
2
009 01
9197662513
I
4
010 01
5180910112
I
020 FT TAPE-WIRE MARKING CHAR 1
6
011 01
<;1140910318
I
020 FT TAPE-wIRE HARKING CHAR 3
8 ,
I
PC MSCR PAN PHL M3X6MH
B
I
I
I
P
012 01
5191878912
I
1
PC XFHR STEP DOWN 220!240V
013 01
OQ04020411
I
4
PC WSHR, NO.I0 DISHED LOCK STL
8
014 01
9197566912
I
2
PC WSHR METRIC SCREW SZ 3
8
015 01
446H03617
I-
3
PC CONN PWR RECPT
P
I
I
I
(j
I
016 01
5179721818
I
2
PC LUG, NO.I0 CRMP-R 22-18AWG
8
017 01
017 02
9427740011
9427740011
1
2
PC STRAP, CBL TIE TYP 1 TO 5/8
PC STRAP, C6L TIE TYP 1 TO 5/8
8
8
019 01
<;2810001! 9
2
020 01
5281002019
I
I
I
i
8041
FT wIR 18GA STRO BRN 600V UL PVC w
250 FT wIR 18GA STRD GRN YEL STRIPE
I
8041
14321
14321
W
I
022 01
5191896910
I
023 01
5187360014
I
024 01
9197572415
I
1
P
PC SWITCH VOLTAGE SELECTOR
I
001 OZ VARNISH INSUL RED GLPT
B
PC NUT HEXAGON SZ 5MM
B
I
6
I
ASSEMBL Y PARTS LIST
BUILD ARC 230
DIY.
DIIClI"IOH
I ASUMILY HUMin : CDI IEV_ I DWC_ I
61409022:31 BID lAC ENTRY, FLEX DISK 50HZ
08601
PAl' HUMin
'IFINDNO LI
'AI' DUClI"IOH
CD "I QUANTITY U/"
",-----
U
I MC
I
A
STATUS
REL
..C VlD
1025101
91975671 8
6
1026 '01
61409024 9
REf
027 01
52810006 8
1 166 FT WIR 18GA STRD BLU 600V UL PVC W
028 01
93083004 7
2
029 01
51758101 3
030 01
95643231 4
~
031 01
62201057 7
REE
032 01
51809102 0
033 01
51809104 6
034 01
62044200 4
PC WASHER EX TOOTH SZ 5
B
PC W/L AC ENTRY 50HZ
D
PC SPLICES 22-16
188 FT INS SLV CLR PVC HEAT SHRINK
1
PC LUG, Q-CONN 22-18AWG FIGS
PC SCH DIAG SO/60HZ
I
,IINT DATE
10-01-80
STATUS DAti
1
I
'AC' I
21
flU CHANGE NO.
00014321
ING. lUI',
fill DATI
09-03-80 1 FA501A
ICO. NO. IN
ECO. NO. OUT
10-07-80
SIN
WI( IN
WI( OUT
W
B
P
D
020 FT TAPE-WIRE MARKING CHAR 2
B
020 FT TAPE-WIRE MARKING CHAR 4
8
PC CLAMP-CABLE ADHESIVE 6ACK
I
I
B
0031 TOTAL LINES
(-~-'
~-j
o
62949100 C
7-41/7-42
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COMMON PARTS DATA APPLICABLE
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15 I
15144900 16
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PC IC 74LSZ45 OCTAL BUS
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WIRE LISTS
8
No wire lists are contained in this manual. The following wire
list document numbers are provided for reference purposes if
needed.
Document Number
Title
C)
Preproduction
Units
Production
Units
60-Hz AC Entry Panel Wiring
61408888
61409023 .
50-Hz AC Entry Panel Wiring
61408889
61409024
DC Cable Wiring (Backpanel)
61408890
61408890
AC Cable Wiring (Backpanel)
61408891
61408891
Signal Cable Wiring (Backpane1)
61408892
61408892
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MANUAL TITLE:
PLATO~ Flexible Disk Subsystem
Hardware Maintenance Manual
PUBUCAT10N NO.:
62949100
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REVISION: D·
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NAME·_____________________________________~---------------------------------
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eCMPANY: _________________________________________________________________
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OTY: _______________________ STATE: _ _ _ _
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