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74 Chapter 3
11. Remove the screw holding the audio board.
12. Detach the audio board from the lower case as shown.
13. Disconnect the audio cable from the audio board.
14. Detach the bluetooth module from the lower case.
15. Take out the microphoner from the lower case. (Tear off the tape fastening the microphone before you
remove the speaker from the lower case).
16. Remove the four screws fastening the speaker set.
17. Take out the speaker from the lower case.
18. Remove two screws holding the subwoofer to the lower case. (The left one can be removed, the right one
can only be loose).
19. Remove the subwoofer from the lower case.
20. Then detach the modem cable from the lower case. (Please notice that the main board has been removed
in previous step).