Dell P28E Service Manual page 35

4 Lift the latches and disconnect the keyboard cable and keyboard-
backlight cable (optional) from the system board.
NOTE: The keyboard-backlight cable is present only if the laptop
shipped with a backlit keyboard.
1 keyboard-backlight cable
3 keyboard cable
5 Lift the keyboard, along with the cables, off the palm-rest assembly.
2 latch
4 keyboard
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