Figure 62. System board
4. Align and place the USB Type-C bracket on the system board.
5. Replace the three (1.6x3) screws to secure the USB Type-C bracket to the system board.
6. For systems shipped with WWAN, route the WWAN antenna cables through their routing guides on the system board.
7. Disconnect the following from their connectors on the system board:
- Display cable
- Camera cable
- Proximity sensor cable
- Darwin (D1) antenna cable (for systems that shipped with the WWAN card)
- Left-speaker cable
- Right-speaker cable
- Touchpad-FPC cable
- Power-button FPC (for systems shipped without fingerprint reader) or USH I/O-board FPC cable (for systems shipped
with a fingerprint reader)
NOTE:
The connector for the display cable features a latch that locks it in place on the system board which technicians
must flip open in order to connect the display cable to the system board..
8. Align and place the WWAN Darwin cable bracket on the system board.
9. Tighten the (M1.6x2) screw to secure the WWAN Darwin cable bracket to the system board.
10. Align and place the display cable/Type-C bracket on the system board.
11. Replace the two (M1.6x3) screws to secure the display cable/Type-C bracket in place.
12. Adhere the left and right mylar stickers on the system board.
Next steps
1. Install the battery.
2. Install the heat sink.
3. Install the left fan.
4. Install the right fan.
5. Install the WWAN card if applicable.
6. Install the solid state drive.
7. Install the base cover.
78
Removing and installing Field Replaceable Units (FRUs)
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