e. Card reader board (Card reader board on page 59)
f. Battery (Battery on page 64)
When replacing the system board, be sure to remove the following components (as applicable) from the
defective system board and install on the replacement system board:
●
Memory modules (Memory modules on page 35)
●
WLAN/Bluetooth module (WLAN/Bluetooth combo card on page 37)
●
WWAN module (WWAN module on page 39)
●
M.2 solid-state drive (M.2 solid-state drive on page 43)
Remove the system board:
1. Position the computer upright on a at surface and open the display as far as possible.
2. Disconnect the following cables from the system board:
(1): Display cable
(2): Power connector cable
(3): Hard drive connector cable (ZIF)
3. Remove the 2 Torx T8 2.5×4.0 screws (1) that secure the system board to the computer.
4. Lift the bracket from atop the USB-Type C port (2).
The USB bracket is available using spare part number L01051-001.
5. Rotate the left side of the system board upward (3).
68 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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