System Board
Description Spare part number
System board 669973-001
The system board is secured with nine screws.
To remove the system board:
1. Prepare the computer for disassembly (see
Preparing to Disassemble the Computer
on page 37).
2. Remove the rear cover (see
Rear Cover on page 38).
3. Remove the system board cover (see
System Board Cover on page 69).
4. Remove the memory module (see
Memory on page 45).
5. Remove the WLAN module (see
WLAN Module on page 47).
6. Disconnect all cables from the system board, noting their location for reinstallation.
7. Remove the nine screws (circled in image) that secure the system board to the computer.
8. Lift the system board straight up and out of the computer.
To install the system board, reverse the removal procedures.
System Board 73
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