
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 |