Y
END
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5-5
SGH-Q200 Flow Chart of Troubleshooting and Circuit Diagrams
5-5. Microphone Part
Micro Phone does not work
Y
N
Y
check the contact status
of microphone.
Refabricate or change the
microphone holder.
Y
N
Check audio switch
U401 circuitry
Change U401
N
Check the reference
voltage on mic path
C410 2.5 V
Resolder or change
R427, C410, R407, C404, R403, R405