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Flow Chart of Troubleshooting
9-12
9-5. Microphone Part
Microphone does not work
Yes
Resolder MIC
Check the connection
from MIC
No
Check the circuit related C503
Check the EAR_JACK_IN
= H ?
Yes
Check the path from Main IC to MIC
Check the circuit
from UCD300 to MIC
No
Yes
Replace the MIC
Check the MIC
No
Yes
END
