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 65)
●
Memory module (see
Memory modules on page 74)
●
WLAN module (see
WLAN module on page 78)
●
WWAN module (see
WWAN module on page 76)
●
Modem module (see
Modem module on page 85)
●
Processor (see
Processor on page 93)
Remove the system board:
1. Position the computer right-side up, with the front toward you.
2. Lift the Touchpad connector latch (1) and disconnect the Touchpad cable (2).
3. Lift the fingerprint reader connector latch (3) and disconnect the fingerprint reader cable (4).
4. Disconnect the power connector cable (5).
5. Remove the display cable from the rubber routing path mounted on the computer (1).
110 Chapter 4 Removal and replacement procedures
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