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Y
END
SAMSUNG Proprietary-Contents may change without notice
5-5
SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram
5-5. Microphone Part
Microphone does not work
Y
N
Y
check the connection
from CN201
Resolder or change CN201
or change LCD-Keypad PCB
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, R410, R407, C404, R403, R405