Dell NOT22422 Owner's Manual page 97

Steps
1. Align and place the system board on the palm-rest assembly.
2. Replace the nine (M2x4) screws to secure the system board to the palm-rest assembly.
3. Align and place the PC bridge support bracket on the system board.
4. Replace the two (M2x4) screws to secure the PC bridge support bracket in place.
5. Connect the power button with fingerprint reader FPC cable, right speaker cable, front LED FPC cable, and left speaker
cable to the connectors on the system board.
6. Adhere the SD-card reader daughterboard FPC/USH and SD-card reader daughterboard FPC cable and touchpad FPC cable
on the palm-rest assembly.
7. Connect the touchpad FPC cable to the connector on the touchpad module.
8. For systems shipped with a USH module, connect the USH and SD-card reader daughterboard FPC cable to the connector
on the USH and SD-card reader daughterboard.
9. For systems shipped without a USH module, connect the SD-card reader daughterboard FPC cable to the connector on the
SD-card reader daughterboard.
10. Align and place the display FPC interposer board on the system board.
NOTE: The pins on the interposer board are very fragile. Avoid contact with the pins on the board, instead handle the
board by lifting and holding from the edges or the sides.
11. Connect the display FPC cable to the connector on the system board.
12. Replace the two (M1.4x4) T5 Torx screws to secure the display FPC in place.
13. Flip close the display FPC cover.
96 Removing and installing Field Replaceable Units (FRUs)