Samsung SGH-E390 - Microphone Troubleshooting

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Flow Chart of Troubleshooting
9-8
9-5. Microphone Part
Resolder the R701 and R702
Check the connection status
of MIC(MIC600)
Check the resistors
R701 & R702
Re-Solder the Mic (MIC600)
END
No
Yes
Yes
Yes
Yes
No
Check MIC_BIAS
='H'?
No
Resolder R600, TA600, R603, R604
Microphone does not work
Check the MIC
No
Replace the microphone
Yes