3. TROUBLE SHOOTING
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3.10.3 Main MIC troubleshooting
Main MIC signal is generate by MEMS MIC on Lower FPCB.
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Check the MIC signal by Loopback test
or camcorder recprding.
Change the Low FPCB.
Is vioce signal OK?
Change the WCD9302(U1600).
is vioce signal OK?
Change the MIC hole and clean up.
is vioce signal OK?
No
No
No
Yes
Yes
Yes
START
Change the Main PCB