HP ProBook 4535s Service Manual page 74

Remove the speaker assembly:
1. Position the top cover upside-down with the front toward you.
2. Remove the Quick Launch board cable from atop the right speaker (1).
3. Remove the power button board cable from atop the left speaker (2).
4. Remove the four Phillips PM2.0×4.0 screws (3) that secure the speakers to the computer.
5. Lift the speaker from the top cover (4) while removing the cable from its routing path in the top
cover (5).
Reverse this procedure to install the speaker assembly.
66 Chapter 4 Removal and replacement procedures