![background image](http://html.mh-extra.com/html/samsung/sgh-t500/sgh-t500_service-manual_1191142036.webp)
Flow Chart of Troubleshooting and Circuit Diagrams
5-9
5-5 Microphone Part
Microphone does not work
Resolder EAR400
EAR400 pin 4, 5 = short?
U102 pin 5 (AVCC) 2.5V?
Check the circuit
RC Filter to MIC1
Check the circuit related to U102
END
Resolder the
R422,R423,R423,R429,
C415,C417,C416,C420
Yes
No
Yes
Yes
Yes
No
No
Check the tension of MIC Module
Replace the Mic or Mic Holder
No
Yes