Digital Equipment VAXstation 3100 Maintenance Manual page 188

(
Expansion Boxes 167
6.3.3.3 Power Supply Removal
1.
Remove the TZK50 controller board (Section 6.3.3.1).
2. Disconnect the power cable on the resistor load board that comes from
the power supply.
3. Unscrew the five shield screws (Figure 6-26).
4. Disconnect the SCSI cable(s) from the back of the expansion box.
5. Lift the shield up and off of the main chassis.
6. Remove the three drive mounting screws (Figure 6-27).
7. Disconnect the power cable from the back of the drive.
8. Slide the drive back into the box, put the expansion box on its side, and
remove the four power supply screws (Figure 6--30).