HP ProBook 6545b Maintenance And Service Manual page 150

Removal and replacement procedures
Remove the system board:
1. Disconnect the following cables:
❏
Bluetooth module cable 1 from the system board
❏
Modem module cable 2 from the modem module
❏
External monitor cable 3 from the system board
2. Remove the three slotted Torx T8M2.5×7.0 screws 1 and 2 that secure the system board to the base
enclosure. The front-most screw 2 is present only on HP Compaq 6545b and 6540b computer models.
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