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Samsung GT-M3710L Service Manual page 15

Gsm telephone

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Flow Chart of Troubleshooting
9-5. Microphone Part
Microphone does not work
Yes
No
Check the connection
Resolder MIC
from MIC
Yes
Check the path from Main IC to MIC.
No
(MIC401 for Loud call mode,
Check the circuit
HEA400 for Headset call mode.
from
UCP200
to MIC
MIC400 for every other cases.)
Yes
No
Check the MIC
Replace the MIC
Yes
END
9-9
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization

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