Digital Equipment VAXstation 3100 Maintenance Manual page 189

168 Expansion Boxes
MAi · XOHl · ll
Figure 6-30 TK50Z Expansion Box Power Supply Screws
9. Replace the power supply by reversing the previous procedure.
6.3.3.4 SCSI ID Switch Board Removal
The SCSI ID switch board is on the inside back wall of the TK.50Z-GA
expansion box. It contains two switch packs. QpJy one is on the TK.50Z..GA
expansion box, and connects to the jumper connectors on
the TZK.50
controller
board. Follow this procedure
to
remove the switch board and reverse the
procedure to install it.
1. Switch off power to the expansion box.
2. Unscrew the four cover screws and remove the expansion box cover
(Figure Cr23).
3. Discon.net:t the SCSI ID switch cable from the SCSI
m
switch boa..rd,