HP Pavilion DM4-1050 Maintenance And Service Manual page 76

8. Release the ZIF connector to which the TouchPad button board cable is connected and disconnect
the cable from the system board (2).
9. Release the ZIF connector to which the fingerprint reader board cable is connected and disconnect
the cable from the system board (3).
10. Remove the top cover from the base enclosure.
Reverse this procedure to install the top cover.
66 Chapter 4 Removal and replacement procedures