HP Pavilion dm4 Maintenance And Service Manual page 80

6. Disconnect the following cables from the system board:
(1) Display panel cable
(2) Rear speaker cable
(3) Front speaker cable
(4) Power connector cable
7. Remove the Phillips PM2.5×6.6 screw (1) and the Phillips PM2.0×3.6 screw (2) that secure the
system board to the base enclosure.
8. Lift the front edge of the system board (3) until it rests at an angle.
72 Chapter 4 Removal and replacement procedures