Digital Equipment VAXstation 3100 Maintenance Manual page 168

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Expansion Boxes
147
7. Set the switch settings on the new SCSI ID switch board to the same
position as on the old board you just removed. Figure 6-13 shows the
switch settings and the SCSI address ID each setting represents.
1 2 3
T1.iJJ
D
OPEN
Figure 6-13 RZ55 Expansion Box SCSI ID Switch Setting
6.1.3.3 RZ55 Expansion Box Power Supply Removal
1. Switch off power to the expansion box.
2. Unscrew the four cover screws and remove the expansion box cover
(Figure 6-5).
3. Remove the three shield screws (Figure 6-6).
4. Lift the shield up, disconnect the power cable from the resistor load board,
and remove the shield (with the resistor load board) from the expansion
box.
5. Remove the three drive mounting screws (Figure 6-7).
6. Slide the drive out part way and disconnect the power cable, the SCSI
switch cable, and the data cable from the drive.
7. Remove the drive from the box.