Samsung SGH-E100 Service Manual page 31

5. Microphone Part
Microphone does not work
Check the connection
from MIC
Check the circuit
from U504 to MIC
Check the MIC
Yes
Yes
Yes
Yes
END
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SGH-E100 Flow Chart of Troubleshooting
No
Resolder MIC
No
Resolder the C508, C515, R502, R504, R507
No
Replace the MIC
7-9
and R509