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 65)
●
WLAN module (see
WLAN module on page 76)
●
WWAN module (see
WWAN module on page 70)
●
Modem module (see
Modem module on page 97)
●
Processor (see
Processor on page 104)
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:
●
(1) Bluetooth module cable
●
(2) USB connector module cable
●
(3) RJ-45 cable
●
(4) SIM board cable
●
(5) Power cable
3. Lift the rear edge of the system board (1) until it rests at an angle.
Component replacement procedures 107