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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:
●
RTC battery (see
RTC battery on page 70)
●
Memory modules (see
Memory module on page 71)
●
WLAN module (see
WLAN module on page 65)
●
Modem module (see
Modem module on page 95)
Remove the system board:
1. Disconnect the power connector cable (1) from the system board.
2. Remove the two Phillips PM2.5×5.0 screws (2) that secure the system board to the computer.
3. Use the optical drive connector (1) to lift the right side of the system board until it rests at an angle.
4. Release the system board (2) by sliding it to the right at an angle until the connectors on the left side
of the system board disengage from the base enclosure.
5. Remove the system board (3).
Component replacement procedures 107