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NOTE: When replacing the system board, be sure that the following components are removed from
the defective system board and installed on the replacement system board:
●
SIM (see
SIM on page 46)
●
Memory module (see
Memory module on page 55)
●
RTC battery (see
RTC battery on page 73)
●
Heat sink (see
Heat sink on page 77)
Remove the system board:
1. Remove the two Phillips PM2.0×3.4 screws (1) that secure the system board to the top cover.
2. Lift the rear edge of the system board (2) and swing it up and forward until it rests upside down in
front of the computer.
3. Release the ZIF connector to which the TouchPad cable is connected, and then disconnect the
TouchPad cable (1) from the system board.
76 Chapter 4 Removal and replacement procedures