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d. Fan (see Fan on page 64)
e. Heat sink (see
Heat sink on page 65)
f. Keyboard (see
Keyboard on page 68)
g. Bottom cover (see
Bottom cover from top cover on page 71)
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 43)
●
Memory module (see
Memory modules on page 56)
●
WLAN module (see
WLAN module on page 60)
●
WWAN module (see
WWAN module on page 58)
●
Modem module (see
Modem module on page 63)
●
Processor (see
Processor on page 67)
Remove the system board:
1. Position the computer right-side up, with the front toward you.
2. Disconnect the following cables from the system board (as necessary):
●
(1): Antenna cables from the rubber clamp
●
(2): Lid sensor board cable
●
(3): Display cable
●
(4): Webcam cable
●
(5): Fingerprint reader cable
●
(6): RTC battery cable
Component replacement procedures 91