Dell NOT22422 Owner's Manual page 92

15. For systems shipped without a USH module, disconnect the SD-card reader daughterboard FPC cable from the connector on
the SD-card reader daughterboard.
16. For systems shipped with a USH module, disconnect the USH and SD-card reader daughterboard FPC cable from the
connector on the USH and SD-card reader daughterboard.
17. Disconnect the touchpad FPC cable from the connector on the touchpad module.
18. Peel the SD-card reader daughterboard FPC/USH and SD-card reader daughterboard FPC cable and touchpad FPC cable
from the palm-rest assembly.
19. Disconnect the power button with fingerprint reader FPC cable, right speaker cable, front LED FPC cable, and left speaker
cable from the connectors on the system board.
20. Remove the two (M2x4) screws that secure the PC bridge support bracket in place.
21. Remove the PC bridge support bracket from the system board.
22. Remove the nine (M2x4) screws that secure the system board to the palm-rest assembly.
23. Remove the system board off the chassis.
NOTE: Replacement of the system board requires further removal of the touchpad FPC and SD-Card reader daughter
board FPC/USH and SD-Card reader daughterboard FPC. Refer disassembly procedures of touchpad and SD card
reader daughterboard FPC/USH and SD-card reader daughterboard FPC for more information.
Removing and installing Field Replaceable Units (FRUs) 91