![background image](http://html.mh-extra.com/html/samsung/sgh-z130/sgh-z130_service-manual_1190232013.webp)
SAMSUNG Proprietary-Contents may change without notice
SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
2-
10
This Document can not be used without Samsung's authorization
2-1-5. Microphone Part
Micro-phone does not work
Is the assembled status of
Microphone O.K?
YES
Reassemble the
microphone
NO
Check the DC bias voltage on
Mic path.
The voltage of R242 is
2.6V
±
10%?
NO
Check the path around MIC
Bias circuit
Is microphone OK?
NO
Check U100
END
YES
YES
YES