4. TROUBLE SHOOTING
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4.12. 4 SUB MIC troubleshooting
Sub MIC control signals are generated by LDO(U10001), and Power is supplied by Battery (VBAT).
Check the Sub MIC
Yes
No
START
Speaker phone call is OK?
END
Check the TP1
Bias range 1.8V~2.2V
OK?
Speaker phone call is OK
END
Change The VCAM FPCB