Remove the system board:
1. Disconnect the following cables from the system board:
(1) Display infrared camera cable
(2) WLAN antenna cables
NOTE: The #1/white WLAN antenna cable connects to the WLAN module "#1/Main" terminal. The #2/
black WLAN antenna cable connects to the WLAN module "#2/Aux" terminal.
(3) WWAN antenna cables
NOTE: The #5/red WWAN antenna cable connects to the WWAN module #5/Main terminal. The #6/blue
WWAN antenna cable connects to the WWAN module #6/Aux terminal.
(4) Display panel cable
(5) Audio jack ZIF connector cable
(6) Card reader board ZIF connector cable
(7) Speaker cable
(8) Keyboard backlight ZIF connector cable
(9) Keyboard ZIF connector cable
(10) Fingerprint reader board ZIF connector cable
2. Remove the SIM card slot insert (1) (if present).
44 Chapter 5 Removal and replacement procedures
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