HP Compaq 6820s Maintenance And Service Manual page 70

Remove the following screws:
3.
(1) One Torx T8M2.5×6.0 screw that secures the system board to the base enclosure
(2) Three Torx T8M2.5×6.0 screws that secure the battery connector board to the base enclosure
(3) Four Torx T8M2.5×4.0 screws that secure the optical drive connector board to the base enclosure
(4) One Phillips PMM2.0×6.0 screw that secures the system board to the base enclosure
Flex the left side of the base enclosure (1) until the external monitor connector (2) is clear of the
4.
opening in the base enclosure.
Lift the rear edge of the system board (3) until it rests at an angle.
5.
Remove the system board (4) from the base enclosure by sliding it back.
6.
62 Chapter 4 Removal and replacement procedures