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9-9. MIC Working
Mic does not work
Is there ant signal
The voltage of
R513 is about 1.6V?
Is there any signal
at R501,R505?
No
at C526?
Yes
No
Yes
No
Yes
END
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Is there ant signal
at C526?
Yes
Is there ant signal
at C526?
Yes
Check the path around MIC bias circuit
Check U502
9-18
Flow Chart of Troubleshooting
No
Replace slide FPCB connector
No
Replace sub key & mic FPCB connector
Change MIC module
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