3. TROUBLE SHOOTING
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3.8.3 Main MIC troubleshooting
A Main MIC is located on Lower FPCB.
It operates in case of voice call (handset), voice recording, camcorder recording
START
Check the MIC signal by
receiver Loop back test
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Is Speaker sound OK?
Change the WCD9320(U10000)
Is voice signal ok?
END
END
END
END
END
END
Change The main PCB
Check the MIC mesh filter, rubber.
Is voice signal ok?
Check the MIC hole to make clear the
voice signal path Is voice signal ok?
Change the Main MIC.
Is voice signal ok?
Check the Lower FPCB
Is voice signal ok?