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Flow Chart of Troubleshooting
9-8
9-5. Microphone Part
Check the connection
from MIC
C230 = 2.1V ?
Resolder MIC
Check the path around MIC bias circuit
END
No
Yes
Yes
Yes
Yes
No
No
Replace the MIC
Microphone does not work
Check the MIC
Check the circuit
from
UCP200
to MIC
Yes
Check the path from Main IC to MIC
No