Acer 4720Z - Manual (Page 67)

Chapter 3 61
Removing the Audio Board
4. Remove the screw fastening the audio board.
5. Remove the audio board.
Disassembling the Upper Case Assembly
Removing the Bluetooth Module
1. Remove the two screws fastening the Bluetooth module.
2. Disconnect the Bluetooth cable to remove the Bluetooth module.
Removing the Speakers
3. Remove the three screws fastening the speakers.
4. Remove the speakers.