3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
3.10.4 SUB MIC troubleshooting
Sub MICsignal is generate by MEMS MIC
LGE Internal Use Only
4. 12. 5 Ear-MIC troubleshooting
Ear MIC control signal is generate by MT6323(U4100).
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Earphone recognition fail
START
Check the MIC signal by Loopback test
Check the mic hold and clean up.
Is voice signal OK?
Change the mic(MIC6101).
Is voice signal OK?
Change the MT6323(U4100).
Is voice signal OK?
Change the main PCB
END
END
END
No
No
No
Yes
Yes
Yes