Lenovo 5457 Installation And Service Manual page 314

15. If you are instructed to return the system board, follow all packaging instructions, and use any
packaging materials for shipping that are supplied to you.
Attention: Make sure to place the socket covers for the microprocessor sockets on the system board
before returning the system board.
To remove the system board on the 5U server model with hot-swap power supplies, complete the following
steps. For 4U server models with non-hot-swap power supplies, please see the above sub-section.
1. Read the safety information in
2. Turn off the server and all attached devices; then, disconnect all power cords and external cables.
3. Unlock and remove the side cover (see
4. Carefully turn the server on its side so that it is lying flat, with the system board facing up.
Attention: Do not allow the server to fall over.
5. Rotate the rear adapter-retention bracket to the open (unlocked) position.
6. Remove the hard disk drive fan duct (see
7. Remove the microprocessor and heat sink (see
289).
Attention: Remove the socket covers from the microprocessor sockets on the new system board and
place them on the microprocessor sockets of the system board you are removing.
8. Disengage the cables from any retention-clips.
9. Note where each cable is connected; then, disconnect all cables from the system board.
Attention: Disengage all latches, release tabs or locks on cable connectors when you disconnect all
cables from the system board. Failing to release them before removing the cables will damage the cable
sockets on the system board. The cable sockets on the system board are fragile. Any damage to the
cable sockets may require replacing the system board.
10. Remove any of the following components (in addition to others that might not be listed) that are installed
on the system board and put them in a safe, static-protective place:
• Adapters (see "Removing an adapter" on page
• DIMMs (see "Replacing a memory module" on page
• Battery (see "Removing the system battery" on page
• USB embedded hypervisor flash device (see
on page 219).
11. Remove the seven screws that secure the system board to the chassis.
Lenovo System x3100 M5 Installation and Service Guide
302
"Safety" on page v and
"Removing the side cover" on page
"Removing the hard disk drive fan duct" on page
"Removing the microprocessor and heat sink" on page
256).
"Removing the USB embedded hypervisor flash device"
"Installation guidelines" on page
173).
264).
269).
31.
214).