Technical data

FRU Replacement
5-50
Removing and Replacing 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 all ISA and PCI slot assignments before removing the expansion
boards.
6. Remove the expansion boards, processor module, and video/Ethernet
daughter card.
7. Remove the screws securing the main logic board to the chassis (A, Figure
5-24).
8. Loosen the 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 SW1 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.
13. Align the main logic board over the seven standoff screws and then slide it to
the left.
14. Reinstall and tighten the screws removed in step 7.
15. Tighten the standoff screws loosened in step 8.
16. Using the side panel label as a reference, reconnect all cables to the main
logic board.
17. Using information recorded in step 5, reinstall the expansion boards,
processor module, and video/Ethernet daughter card to their original
configuration.