SGH-P730 Flow Chart of Troubleshooting and Circuit Diagrams
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8
5.Directional MIC Part
Directional MIC does not work
*
When you play MPEG file, if Audio is not active
Check MIC "+" terminal,
Bias Voltage = 2.6V?
Yes
Resolder R249
No
Check pin21 of U200,
Voltage = 1.76V?
Yes
Resolder C244
No
Change directional MIC
Yes