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:

●Fans (see Fan on page 55)

●Memory module (see Memory module on page 60)

●Heat sink (see Heat sink on page 61)

Remove the system board:

1.Disconnect the webcamera/microphone module cable (1) from the system board.

2.Disconnect the display panel cable (2) from the system board.

3.Release the display panel cable (3) from the heat sink. (The display panel cable is attached to the heat sink with double-sided tape.)

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Chapter 4 Removal and replacement procedures