NOTE: Transfer the reusable WLAN absorbers to the new system board while replacing the system board.
2. Replace the screw (M2x4) securing the system board in place.
3. Connect the camera cable, display cable, battery cable, speaker cable, click pad flexible flat cable, USH daughter board
flexible flat cable (for models shipped with a USH daughter board), RTC cable, finger print reader power button cable,
Darwin cables, and P cable, on the system board.
4. Connect camera and display cables on the system board.
5. Replace the six screws (M2x3) securing the display, camera, and USB Type-C brackets.
Next steps
1. Install the heat-sink.
2. Install the 3-cell battery or the 4-cell battery, whichever is applicable.
3. Install the M.2 2230 solid-state drive.
4. Install the base cover.
5. Follow the procedure in After working inside your computer.
WLAN-antenna module
Removing the WLAN-antenna module
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
1. Follow the procedure in Before working inside your computer..
2. Remove the base cover.
3. Remove the M.2 2230 solid-state drive.
4. Remove the WWAN card.
5. Remove the 3-cell battery or the 4-cell battery, whichever is applicable.
6. Remove the system board.
About this task
NOTE:
When removing the system board to replace or access other parts, the system board can be removed without
removing the heat sink. This will help in simplifying the procedure and preserve the thermal bond between the system board
and heat sink.
NOTE: This procedure applies only to computers shipped with a WLAN-antenna module that is installed on the palm-rest
and keyboard assembly.
The following images indicate the location of the WLAN-antenna module and provide a visual representation of the removal
procedure.
Removing and installing Field Replaceable Units (FRUs)
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