Samsung SGH-E250D W Service Manual page 34

9-5. Microphone Part
Microphone does not work
Check the connection
from MIC
Check the circuit
from UCP200 to MIC
Check F500 PIN 8
Check the MIC
Yes
Yes
Yes
= ' H' ?
Yes
Yes
END
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No
Resolder MIC
No
Resolder the C514, C520, R516, R519
No
Check the JACK_IN signal
No
Replace the MIC
9-9
Flow Chart of Troubleshooting