Removing The Main Logic Board - Digital Equipment DIGITAL Server 7100 1200 Service Maintenance Manual

FRU Replacement

Removing the Main Logic Board

1. Turn off the server.
2. Disconnect all external cables from the I/O expansion modules located at the
rear of server.
3. Unlock and remove the left side panel.
4. Disconnect all cables from the main logic board.
5. Record EISA/PCI, CPU, and memory slot assignments before removing
modules.
6. Remove the expansion boards, CPU module, and memory module.
7. Remove the four screws securing the main logic board to the chassis (A,
Figure 5-24).
8. Loosen the six standoff screws (B, Figure 5-24).
9. Slide the main logic board to the right to release it from the standoffs.
10. Remove the main logic board from the chassis.
11. Configure switch J35 on the new main logic board.
12. If the new main logic board does not have a battery/RTC, remove the
battery/RTC from the old main logic board and replace it on the new main
logic board.
5-52