Specifications

Removal and replacement procedures 48
10.
Remove the power supply backplane.
To replace the component, reverse the removal procedure.
IMPORTANT: Be sure to align the two retaining guides on the chassis with the holes on the power supply
backplane when replacing it.
System board
IMPORTANT: If replacing the system board or clearing NVRAM, you must re-enter the server serial number
through RBSU ("Re-entering the server serial number and product ID" on page 50).
To remove the component:
1. Power down the server (on page 16).
2. Unlock and open the front bezel ("Front bezel" on page 19) (tower servers only).
3. Extend or remove the server from the rack ("Extending the server from the rack" on page 16).
4. Remove the access panel ("Access panel" on page 20).
5. Remove the redundant fan cage (if installed) ("Redundant hot-plug fan cage" on page 30).
6. Remove all expansion boards ("Expansion board" on page 33).
7. Remove the center wall ("Center wall" on page 35).
8. Disconnect all cables.
9. Loosen the two thumbscrews securing the system board to the chassis.
10. Slide the system board toward the front of the chassis to release it from the six retaining guides.