e. Keyboard (see Keyboard on page 65)
f. Base enclosure (see
Base enclosure on page 73)
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 modules (see
Memory module on page 59)
●
Heat sink (see
Heat sink on page 82)
NOTE: You do not have to remove the heat sink to remove the system board.
●
Solid-state drive (see
Solid-state drive (SSD) on page 56)
●
WLAN module (see
WLAN module on page 63)
●
WWAN module (see
WWAN module on page 61)
Remove the system board:
1. Position the computer upright and open as far as possible.
2. Release the ZIF connector (1) to which the fingerprint reader cable is connected, and then disconnect
the fingerprint reader cable (2) from the system board.
3. Close the computer and position it upside down.
4. Disconnect the smart card reader cable (1) from the smart card reader.
5. Disconnect the VGA/USB board cable (2) from the system board.
6. Disconnect the power button board cable (3) from the system board.
7. Release the display panel cable from the routing channel (4) attached to the system board, and then
disconnect the display panel cable (5) from the system board.
8. Disconnect the speaker cable (6) from the system board.
Component replacement procedures 93
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