Digital Equipment VAXstation 3100 Maintenance Manual page 173

152 Expansion Boxes
6.2.2 RRD40 Expansion Box Removal and Replacement
This section describes the removal and replacement procedure for the RRD40
compact disc expansion box. The RRD40 expansion box is a FRU. Remove
the RRD40 expansion box by disconnecting the cables and terminator
(if
installed) on the back of the box. Replace the RRD40 expansion box by
reconnecting the cables and terminator (if installed) on the back of the box.
Then set the SCSI address ID to the same as on the box you removed. To
test the box, switch on the power and run self-test (TEST 6) from the system
box.
llClll INTERFACE
8C81 UNIT NUMBEll SWITCH PACK
SCSI INTERFACE
CAllLI! CONNECTORS
POWEii SWITCH
VOL TAOI! II ELECTOR
MA ·XO•h•t •
Figure 6-17 RRD40 Expansion Box SCSI Address ID Setting
Address ID on
RiID40 Expansion Box Swlkh Settlnp
SCSI Bus 1 2 J
4
0
Off Off Off Off
1
Off Off On Off
2
Off On Off Off
3
Off On On Off
42
On Off Off Off
5
On Off On Off
61
On
On
Off Off
7
On On On Off
1
Reseived address ID for SCSI bus controller
2
Recommended address ID for the RRD40 compact disc drive