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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:
●
Memory module (see
Memory module on page 35)
●
WLAN module (see
WLAN module on page 37)
●
Heat sink (see
Heat sink on page 56)
●
Processor (see
Processor on page 58)
Remove the system board:
1. Position the computer right-side up, with the front toward you.
2. Open the computer.
3. Release the ZIF connector (1) to which the TouchPad cable is connected, and then disconnect the
TouchPad cable (2) from the system board.
4. Disconnect the power connector cable (3) from the system board.
5. Close the computer.
6. Turn the computer upside down, with the battery bay toward you.
7.
Remove the Phillips PM2.5×5.0 screw (1) that secures the display panel cable ground loop (2) to
the computer.
8. Release the display panel cable (3) from the retention clip (4) attached to the system board.
54 Chapter 4 Removal and replacement procedures