HP 650 Maintenance And Service Manual page 73

Remove the system board:
1. Disconnect the following cables from the system board.
(1) Speaker cable
(2) Optical drive connector cable
(3) Display panel cable
(4) USB board cable
(5) Power connector cable
2. Remove the three Phillips PM2.5×6.0 screws (1) that secure the system board to
the base enclosure.
3. Lift the right side of the system board (2) until it rests at an angle.
64 Chapter 4 Removal and replacement procedures