HP Pavilion DV4-2155 Maintenance And Service Manual page 87

Remove the audio board and cable:
1. Disconnect the audio board cable 1 from the system board.
2. Release the audio board cable 2 from the base enclosure.
3. Remove the two Phillips PM2.5×3.0 screws 3 that secure the audio board to the system board.
4. Lift the rear edge of the audio board 4 so that the audio connectors slide out of the openings in the base
enclosure, and then remove the audio board and cable.
Reverse this procedure to install the audio board.
Maintenance and Service Guide
Removal and replacement procedures
4–45