AT&T 3B2 Maintenance Reference Manual page 72
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Also See for 3B2:
- Off-line diagnostic manual (739 pages) ,
- Maintenance reference manual (422 pages) ,
- Operation manual (415 pages)
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SCSI Bus Peripherals
Figure 3-4 shows the front and rear views of a disk controller module (DCM/4E). The front
cover of the DCM contains the power switch and recessed label areas for SCSI identification
labels. The rear of the DCM contains connections to the SCSI bus, the di.sk modules, AC
power, and the soft-power control.
25-PIN DISK 0-3 OUT
SOFT POWER
JACKS
IDENTIFICATION
LABELS
@@
0
oc:::=:io
oc:::=:io
oc:::=:io
oc==:Jo
oc==:Jo
____ .,,.,.__ POWER
SWITCH
Figure 3-4.
SCSI disk controller module
3-12
AT&T 382 Computer Maintenance Reference Manual
37-PIN DISK
CONTROL OUT
SCSI ID
SCSI OUT
SCSI IN
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