HP 540 Maintenance And Service Manual page 75

Remove the system board:
1. Remove the RJ-11 jack (1) from the clip built into the base enclosure and remove the RJ-11 jack
cable from the hook (2) built into the base enclosure.
2. Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board.
3. Remove the two Phillips PM2.0×6.0 screws (1) and the Torx T8M2.5×4.0 screw (2) that secure the
system board to the base enclosure.
4. Flex the left side of the base enclosure (1) until the external monitor connector (2) is clear of the
opening in the base enclosure.
5. Lift the rear edge of the system board (3) until it rests at an angle.
Component replacement procedures 67