HP Compaq Presario,Presario R4000 Maintenance And Service Manual page 112

Removal and Replacement Procedures
13. Lift the rear edge of the keyboard cover 1 and swing it
forward until it rests on the keyboard.
14. Release the zero insertion force (ZIF) connector to which the
volume board cable is attached and disconnect the volume
board cable 2 from the system board.
15. Remove the keyboard cover.
Removing the Keyboard Cover, Compaq Presario R4000 Models
Reverse the above procedure to install the keyboard cover.
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