Data General NOVA ECLIPSE 6234 Service Manual page 120

Data General Corporation (DGC) has prepared this manual for use by DGC personnel and customers as a guide to the proper installation, operation, and
maintenance of DGC equipment and software. The drawings and specifications contained herein are the property of DGC and.shall neither be reproduced in
whole or in part without DGC's prior written approval nor be implied to grant any license to make, use, or sell equipment manufactured in accordance herewith.
5 .1 CONTROLLER PCB REPLACEMENT
NOTE
The controller PCB for the disk subsystem is located in
the host CPU. Observe MOS caution when handling.
1. Power down the host computer (refer to the CPU FRU or
operator manual for the proper procedure}.
2. Remove any CPU panels required to expose the PCB.
3. Determine which CPU chassis slot the disk subsystem
controller PCB is in, note, and remove.
4. Check and match the replacement controller PCB jumpering against
the controller PCB just removed. See Figures 5-1 and 5-2 for
correct jumper locations.
FS-06762
JUMPER NOTES:
1. JUMPERS W1 AND W6 ARE DEVICE CODE SELECTION JUMPERS.
2. JUMPERS
we.
W11 AND W12 ARE IN.
3. JUMPERS W7 AND W10 ARE OUT.
4. W14 IS IN FOR ALL CPU'S EXCEPT MV /4000, 6000, 8000, 10000.
5. W13 IS IN FOR MV/4000, 6000, 8000, 10000.
6. IF ONE DISKETTE AND ONE HARD DISK ARE ATTACHED, W9 IS IN.
INSERT
JUMPER
FOR"1"
CONTROLLER
DEVICE CODE SELECT
JUMPER
DEVICE DEVICE
NUMBER CODE33 CODE 73
1
OUT
IN
2 IN
IN
3 IN
IN
4 OUT
OUT
5 IN
IN
6 IN
IN
Figure 5-1. 6234 CPU Controller Jumpering
015-000133
5-2
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