Service manual

52 VAXstation 3100 (Model 76) System
5. Reverse the removal procedure to install the new RX23 drive.
CAUTION
To prevent possible damage to the RX23 SCSI bus data cable
during the installation procedure, do not place the cable across
the SCSI/FDI module connector tabs.
4.2.4 SCSI/FDI Adapter Removal
To remove the SCSI/FDI adapter:
1. Remove the system box cover (refer to Section 4.2.1).
2. Locate the SCSI ID switches 1, 2, and 3 as shown in Figure 4–14.
Record the SCSI ID switch positions so that you can set the ID
switches on the SCSI/FDI replacement board to the same positions.
Usually, the switches are set to 5, as shown in Figure 4–14.
NOTE
If for some reason the SCSI ID jumpers have been tampered
with before the board has been replaced, refer to Table 4–4 for
the SCSI/FDI adapter switch settings.
Table 4–4 SCSI/FDI Adapter Switch Settings
SCSI ID 1 2 3
0UpUpUp
1 Down Up Up
2 Up Down Up
3 Down Down Up
4 Up Up Down
5 Down Up Down
6 Up Down Down
7 Down Down Down