Dell NOT22428 Owner's Manual page 90

Steps
1. Align and place the system board on its slot on the palm-rest assembly.
2. Replace the three screws (M2x3) that secure the system board to the palm-rest assembly.
3. Connect the sensor board-cable to the connector on the system board.
4. Connect the display cable to the connector on the system board.
5. Route the display cable through the routing guides on the system board.
6. Connect the fan cable to the connector on the system board.
7. Connect the touchpad cable to the connector on the system board and close the latch.
8. Connect the USH cable to the USH module and close the latch.
9. Connect the coin-cell battery cable to the connector on the system board.
10. Adhere the black flap near the antenna cables and cover the sensor board-cable.
11. Place the display-cable bracket over the display cable.
12. Replace the two screws (M2x3) that secure the display-cable bracket to the palm-rest assembly..
13. Place the Type-C bracket on its slot on the palm-rest assembly.
14. Replace the three screws (M2x4) that secure the Type-C bracket to the palm-rest assembly..
Removing and installing Field Replaceable Units (FRUs) 89