HP Compaq 6520s Maintenance And Service Manual page 71

Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board.
2.
Remove the Phillips PM2.0×6.0 screw (1) and the Torx T8M2.5×4.0 screw (2) that secure the system
3.
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.
Component replacement procedures 63