![background image](http://html.mh-extra.com/html/samsung/sgh-q208/sgh-q208_service-manual_1190998027.webp)
Y
END
SAMSUNG Proprietary-Contents may change without notice
5-5
SGH-Q208 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