When replacing the system board, be sure to remove the following components from the defective system
board and install on the replacement system board:
●
Memory module (see
Memory modules on page 44)
●
WLAN/Bluetooth module (see
WLAN/Bluetooth combo card on page 46)
●
WWAN module (see
WWAN module on page 48)
●
Processor (see
Processor on page 79)
Remove the system board:
1. Position the computer upright with the front toward you.
2. Disconnect the display cable (1) from the system board.
3. Disconnect the battery connector cable from the system board (2).
4. Remove the 3 Phillips PM2.5×4.0 screws (3) that secure the system board and the optical drive
extension board to the computer.
5. Lift the right side of the system board up at an angle (1).
Component replacement procedures 69
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