HP 550 Maintenance And Service Manual page 76

2. Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board.
3. Remove the following screws:
(1) Two Phillips PM2.0×6.0 screws
(2) Two Torx T8M2.0×4.0 screws
(3) One Torx T8M2.5×4.0 screw
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.
68 Chapter 4 Removal and replacement procedures