LG -E960 Service Manual page 127

4.10. 3 Main MIC troubleshooting
Main MIC signal is generate by MEMS MIC on Lower FPCB
4.10. 3 Main MIC troubleshooting
Main MIC signal is generate by MEMS MIC on Lower FPCB
LGE Internal Use Only
Start
Check the MIC signal by Loop back test or
Check the MIC signal by Loop back teat or
Camcorder Recording
camcorder recording
NO
Check the MIC
Check the MIC hole to make
hole to make
clear the voice signal path Is
clear the voice
voice signal ok?
signal path. Is
voice signal OK?
No
NO
Check the low FPCB
And check the voice signal
Check the Low
Is voice signal ok?
FPCB. And check
the voice signal.
Is voice signal OK?
No
NO
Change the WCD9310(U5001)
Is voice signal ok?
Change the
WCD9310(U5001).
Is the voice No
signal OK?
Change The main PCB
NO
Change the Main PCB
Main MIC
START
Yes
Yes
Yes
WCD9310(U5001)
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4. TROUBLE SHOOTING
YES
END
END
END
YES
END
END
YES
END
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