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13
14
15
XA10B
A
o
K
10
11
M
12
N
13
14
15
DRIVE CONTROL PCA
10 MIL SECTOR CYLINDER PCA
f,o~~2)
+5V
-ll ,--
-=?
r::
Im~--L
-
I
+5V
+5V
11
+5V
P2
-12V
+12V
INTERLOCK LINE
INTERLOCK LINE
LATCH DRIVE
SELECT ENABLE
LOAD SWITCH
NC
CARRIAGE RETRACTED
INITIAL TEST
ENERGIZE MOTOR RELAY
LONG DELAY TEST
ENERGIZE SERVO RELAY
NC
DRIVE FAULT LAMP
NC
DRIVE READY LAMP
NC
RESET
NC
ENCODER LAMP INTERLOCK
NC
NC
NC
RETRACT
DRIVE READY
AT HOME
NC
SERVO INHIBIT
DRIVE FAULT
POSITION MATCH
RESEEK HOME
HEADS LOADED
DRIVE SET CYLINDER
SEEK HOME
SEEK CHECK
NC
I
SELECT AND CONTROL AND OUTBUS 71
R!W UNSAFE
FIRST STATUS
R!W RESET
ACCESS READY
ATTENTION
NC
SPEED DOWN
NC
SPEED UP
NC
I
I
.I
I
RESET COUNTERS
NC
ILLEGAL ADDR ESS
INITIAL RESET
~
-12V
+12V
TO XA12A-C
FROM XA10A-5
TO J4-21
TOJ4-S
FROM XA12A-H
TOJ4-R
FROM XA12A-J
TO J4-P
FROM XA12A-K
TO J4-N
FROM XA12A-L
NC
FROM XAI2A-M
TOJ4-T
FROM XA12A-N
TO J4-16
FROM XA12A-P
TOJ4-17
FROM XA12A-R
TOJ4-18
FROM XA12A-S
TO J4-20
TOJ4-19
FROM XA12B-A
TO J4-Y
NC
TO J4-22
TO XA7B-C, J4-M
TO J4-Z
TO XA7B-D
TOJ4-L
TO XA7B-7
NC
FROM J3-14
NC
TO XA9B-7
NC
TO XA9B-8
NC
FROM XA9B-9
NC
FROM XA9B-l0
NC
TO XA9B-ll
TO XA12B-N
TO XA10B-12
TO XAI2B-P
TO XA10B-13
NC
FROM XA10B-14
FROM XA10B-S
TO XA10B-15
H
K
10
11
M
12
N
13
14
15
XA11B
P2
10
11
12
13
14
-12V
+12V
INTERLOCK LINE
DRIVESETHEAD~
I
SAR 1
SECTOR
I
DRIVE OUTBUSO
SAR 4
DRIVE OUTBUS 1
SAR B
DRIVE OUTBUS2
NC
DRIVE OUTBUS 3
SAR 16
DRIVE OUT BUS 4
SUB 16
DRIVE OUTBUS 5
SUB 32
DRIVE OUTBUS 6
SUB2
DR IVE OUTBUS 7
SUB 1
SUBS
SEEK
SUB CARRY
NC
SUB 64
HEAD 1
SUB 128
HEAD 1
HEAD 2
>TRACK 12B
NC
SECTOR TRANSDUCER
NC
VELOCITY COMMAND
NC
CARRY
NC
REVERSE COUNT
NC
FORWARD COUNT
NC
CYLINDER MATCH
SECTOR COMPARE
SPEED DOWN
SECTOR PU LSE
SPEED UP
NC
I
I
.... 1_5-;-.......... _ : _ _ _ _
~~:::::::
I
TO XA10A-6
FROM XA11A-5
NC
FROM XA10A-7
FROM XA14-5 OR J4-F
FROM J3-12
FROM XA 14-6 OR J4-E
FROM J3-11
FROM J3-13
TO XAllA-7
NC
TO XA7B-2, XA8A-ll/M, XA llA-8
NC
TO XA7B-3, XA8A-12/N, XA11A-9
FROM XA14-A OR J4-1
TO XA7B-4, XASA-131P, XA11A-l0
FROM J4-J OR XA14-2
TO XA7B-5, XABA-14/R, XAllA-l1
FROM J4-H OR XA14-3
TO XA7B-6, XABA-15/S, XAllA-12
FROM J4-9 OR XA14-1
TO XAllA-13
FROM XA14-B OR J4-1O
TOXAllA-14
FROM J4-A OR XAl4-C
TOXAllA-15
FROM J3-2
TO XA7B-B, XAllB-A
FROM J4-X OR XA14-4
TO XA7B-l
FROM J4-D OR XA14-7
FROM XA10B-2
FROM J4-C OR XA14-8
FROM XA10B-4
FROM J4-B OR XA14-9
TO XA10B-5
FROM J4-8 OR XA14-15
TO XA10B-6
TO J4-3, XA8B-7/H, XA14-20
FROM XA10B-7
TO J4-11, XABB-8IJ, XA14-11
TO XA10B-8
TO J4-V, XABB-9, XA14-12
FROM XAlOB-9
TO J4-W, XA8B-K, XAl4-13
FROM XAlOB-l0/L
TO J4-2, XA14-14
FROM XA10B-ll
TO J4-7 OR XA14-16
FROM XAllB-12
TOJ4-60R XA14-17
TO XA14-10
TO J4-4 OR XA14-19
FROM XA13-10
XA12A
I
D
H
K
10
11
M
12
N
13
14
15
XA12B
I/O MULTIPLEX PCA
A12 (07901-60007)
r:-----
P2
+5V
INTERLOCK LINE
NC
SE LECT ENABLE
SELECT2
SELECT B
SELECT 1
SELECT A
SOFTWARE PROTECT
DRIVE SET HEAD AND SECTOR
NC
DRIVE OUTBUSO
NC
DRIVE OUTBUS 1
CONTROL
DRIVE OUT BUS 2
SET HEAD AND SECTOR
DRIVE OUTBUS3
SET CYLINDER
DRIVEOUTBUS4
OUTBUS BIT 1
DRIVE OUTBUS 5
OUTBUS BIT 0
DRIVE OUTBUS 6
OUTBUS BIT 3
DRIVE OUTBUS 7
DATA PROTECT
SEEK
OUTBUS BIT 7
SELECT AND CONTROL
OUTBUS BIT4
DRIVE READY
OUTBUS BIT 5
DRIVE FAULT
OUT BUS BIT6
RESEEK HOME
OUTBUS BIT 2
DRIVE SET CYLINDER
SELECT AND DRIVE READY
SEEK CHECK
SELECT AND SECTOR PULSE
l
SELECT AND CONTROL AND OUTBUS 7
I
SELECT AND SECTOR COMPARE
FIRST STATUS
SELECT AND ACCESS READY
ACCESS READY
INBUS BIT 4
ATTENTION
INBUS BIT 2
SECTOR COMPARE
INBUS BIT 3
SECTOR PULSE
INBUS BIT 0
MULTIPLE SELECT OUTPUT
iNii'USBiT1
MULTIPLE SELECT INPUT
HP 13210A
CONTROLLER
INTERFACE
r=- -
CONNECTOR
(NOTES 1 AND 2)
XA14
OUTBUS BIT 1
CONTROL
SET HEAD AND SECTOR
OUTBUS BITO
SET CYLINDER
OUTBUS BIT 3
OUTBUS BIT7
OUTBUS BIT 4
OUTBUS BIT 5
OUTBUS BIT6
MULTIPLE SELECT OUTPUT
SELECT AND SECTOR PULSE
SELECT AND SECTOR COM PAR E
SELECT AND ACCESS READY
INBUS BIT 4
OUTBUS BIT 2
INBUS BIT 3
INBUS BIT 0
SELECT AND DRIVE READY
WRITE/READ DATA 1
(NOTE 2)
TO XA8B2/B, XA12A-13
(NOTE 21
TO XA8B-l/A, XA12A-l0
(NOTE 2)
TOXA12A·ll
(NOTE 2)
TO XA8B-3/C, XA12A-14
(NOTE 2)
TO XA12A-12
(NOTE 2)
TO XA8B-4/D, XA12A·15
(NOTE 2)
TO XA12B-2
(NOTE 2)
TOXA12A-5
(NOTE 2)
TO XA12A-6
(NOTE 21
TO XA8B-5/E, XA 12B-3
(NOTE 2)
TO XA12B-4
(NOTE 21
TO XA12B-5
(NOTE 2)
FROM XA12B-R
(NOTE 21
FROM XA12B-8
(NOTE 2)
FROM XA12B-9
(NOTE 2)
FROM XA12B·l0
(NOTE 21
FROM XA12B-l1
(NOTE 2)
TO XA8B-6/F, XA 12B-6
(NOTE 2)
FROM XA12B-12
(NOTE 2)
FROM XA12B·13
(NOTE 21
FROM XA12B·14
(NOTE 21
FROM XA 12B-15
(NOTE 2)
FROM XA 12B-7
FROMITO XABB-l0/L
WRITE/READ DATA 2
i----FROMITO XABB-lllM
R!W CLOCK (NOT USED)
NC
R!W CLOCK (NOT USEDI
WITH XABB-12/N
NC
WITH XABB-13/P
FROM J4-9
FROM J4-1
FROM J4-J
FROM J4-10
FROM J4-H
FROM J4-A
FROMJ4-X
FROM J4-F
FROM J4-E
FROM J4-D
FROM J4-C
FROM J4-B
TO J4-U, XA 12B-S
TO J4-11, XA8B-8/J
TO J4·V, XA8B-9
TO J4-W, XA8B-K
TOJ4-2
FROM J4-8
TO J4-7
TO J4-6
TO J4-5
TO J4-4
TO J4-3, XA8B·7/H
FROMITOXA7B-15/S
F ROMITO XA 7B-14/R
WITH XA7B-P
+5V
WITH XA7B·N
+5V
NOTES:
Maintenance
TERMINATION PCA (NOTES 1 AND 2)
A16(07901-60013)
r=-
OUTBUS BIT 1
A
CONTROL
10
11
12
13
14
15
16
17
18
19
20
21
22
23
23
AA
AA
24
24
BB
BB
SET HEAD AND SECTOR
OUTBUS BITO
SET CYLINDER
OUTBUS BIT3
OUTBUS BIT 7
OUTBUS BIT4
OUTBUS BIT5
OUTBUS BIT6
MULTIPLE SELECT INPUT (NOT USED ON A16)
SELECT AND SECTOR PULSE (NOT USED ON A 16)
SELECT AND SECTOR COMPARE (NOT USED ON A 16)
SELECT AND ACCESS READY (NOT USED ON A161
INBUS BIT 4(NOT USED ON A16)
OUTBUSBIT 2
INBUS BIT 2 (NOT USED ON A161
INBUS BIT 3 (NOT USED ON A161
INBUS BITO (NOT USED ON A16)
INBUS BIT 1 (NOT USED ON A16)
SELECT AND DRIVE READY (NOT USED ON A 161
WRITE/READ DATA 1
WRITE/READ DATA 2
R!W CLOCK A (NOT USEDI
+5V
R!W CLOCK B (NOT USED)
+5V
1.
IN MULTIPLE DRIVE GROUPS, THE XA14 CONNECTS WITH THE PREVIOUS DISC DRIVE AND
XA13 CONNECTS WITH THE NEXT DISC DRIVE; THE FIRST DISC DRIVE IN THE GROUP ACCEPTS
THE CONTROLLER INTERFACE AND THE LAST DISC DRIVE IN THE GROUP USES A 16 TO TER·
MINATE THE INTERFACE.
2.
TO AVOID POSSIBLE INTERFACE CONFLICT DUE TO OR-TIED TRACES, USE EITHER THE DISC
CONTROLLER OR THE DISC SERVICE UNIT BUT NOT BOTH.
3.
THE TERM "WITH" DENOTES CONNECTIONS NOT HAVING AN ASSIGNED SOURCE.
4.
THE TERM "OR" DENOTES OR·TIED CONNECTIONS HAVING MORE THAN ONE POSSIBLE SOURCE.
5.
"NC" MEANS "NOT CONNECTED."
Figure 5-24. Motherboard PC Assembly A5,
Schematic Diagram
5-29/5-30
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