SGH-N500 Flow Chart of Troubleshooting and Circuit Diagrams
5-9
5-5 Microphone Part
Microphone does not work
Resoler U400
U400 pin 4, 5 = short?
U622 pin 3 (AVCC) 3.0V?
Check the circuit
from U467 to MIC1
Check the circuit related to U622
END
Resolder the
R444,R445,R446,R447,
C446,C450,C451
Yes
No
Yes
Yes
Yes
No
No
Check the tension of MIC Module
Replace the Mic or Mic Holder
No
Yes