3. TROUBLE SHOOTING
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Case B. No Sound from Ear-mic
START
Check the Mic signal by Voice recording.
Yes
Yes
Yes
No
No
No
Check parts about Mic Bias(1.8V)
works well ?
Change the WCD9320(U10000)
Is receiver Sound OK?
END
END
END
Change The main PCB
Check the touch FPCB
Mic is OK?
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