HP Compaq 6520s Maintenance And Service Manual page 77

When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
●
Memory module (see
●
WLAN module (see
●
Processor (see Processor on page
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 Phillips PM2.0×6.0 screw (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.
Memory module on page
WLAN module on page
74)
43)
40)
Component replacement procedures 67