HP Compaq NC4400 Maintenance And Service Manual page 142

Removal and Replacement Procedures
2. Disconnect the speaker cable 1 from the system board and
route the cable under the infrared board cable 2.
3. Remove the two Torx8 T8M2.0×5.0 screws 3 that secure the
speaker to the computer.
4. Remove the speaker 4.
Removing the Speaker
Reverse the above procedure to install the speaker.
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