Microphone Part - Samsung SGH-E740S Service Manual

Flow Chart of Troubleshooting

9-5. Microphone Part

Microphone does not work
Check the connection
Check the circuit
from UCP200 to MIC
Check F500, PIN 5
Check the MIC
Yes
of MIC
Yes
Yes
= "H"
Yes
Yes
END
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No
Resolder MIC
No
Resolder the TA602, R605, R608, R609
No
Check the JACK_IN signal
No
Replace the MIC
9-10