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Flow Chart of Troubleshooting
7-10
7-5. Microphone Part
Replace the MIC
No
Check the MIC
Yes
Microphone does not work
Check the JACK_EN signal
No
Check U601, U602 PIN 1
= ' H' ?
No
Yes
Yes
Yes
Yes
No
END
Resolder the C603, C607, R601, R604
R630, R631
Resolder MIC
Check the circuit
from U200 to MIC
Check the connection
from MIC