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