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Flow Chart of Troubleshooting
9-4. Microphone Part - Phone MIC
Phone mic. does not work
Yes
Not OK
Check the connection
Resolder MIC
from MIC
OK
Not OK
Check the circuit
Resolder TA400, R405, R406
OF MIC_BIAS part
OK
Not OK
Check the circuit
Resolder C413, C409, C417, L404,
of MIC part
L405, R407
OK
No
Is Phone MIC working?
Replace MIC
Yes
END
9-7
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