HP Compaq NC6140 Maintenance And Service Manual page 124

Removal and Replacement Procedures
6. Remove the four Phillips PM1.5×4.0 screws 1 that secure the
LED board to the switch cover.
7. Remove the LED board 2.
8. If it is necessary to replace the LED board cable 3,
disconnect the cable from the LED board.
Removing the LED Board
Reverse the above procedure to install the LED board.
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