3. TROUBLE SHOOTING
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3.8.4 Main Mic
Main Mic located on Lower FPCB.
It’s operating voice call(except speakerphone), voice recording, camcorder recording
START
Check the Mic signal by test mode
or Voice recording.
Change Main Board
Reconnect or change FPCB connector.
Voice signal OK?
Check Mic hole & rubber to
make the voice signal?
Yes
Yes
Yes
Yes
Check parts about Mic Bias
Mic works well?
Change MIC10000 or MT6577(U201).
Mic works well?
No
No
No
No
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