FHP DV1400 - Manual (Page 144)

Removal and Replacement Procedures
Maintenance and Service Guide 5–31
14. Release the ZIF connector 1 to which the keyboard cable is
connected and disconnect the keyboard cable 2 from the
system board.
Disconnecting the Keyboard Cable, HP Compaq nx4820 and
Compaq Presario V2400 Models Only
15. Remove the keyboard.
Reverse the above procedure to install the keyboard.