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5-5 Microphone Part
Microphone does not work
Yes
No
J102 pin 4, 5 = short? Resoler J102
Yes
No
U103 pin 2 (AVCC3.0) 3.0V? Check the circuit related to U103
Yes
No
Check the circuit from U110 to MIC101
Resolder the R146,R157,R150,R155, C163,C161,C164
Yes
No
Check the tension of MIC Module Replace the Mic or Mic Holder
Yes
END
Flow Chart of Troubleshooting and Circuit Diagrams
5-9
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