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When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
SIM card (see
SIM on page 44)
●
Memory module (see
Memory modules on page 45)
●
WLAN module (see
WLAN/Bluetooth combo card on page 48)
●
WWAN module (see
WWAN module on page 46)
Remove the system board:
1. Position the computer upright with the front toward you.
2. Disconnect the display cable (1) and the power cable (2) from the system board.
3. Remove the 2 Phillips PM2.0×4.0 screws (1) that secure the system board to the base enclosure.
72 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts