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Flow Chart of Troubleshooting
9-13
9-5. Microphone Part
Phone MIC does not work
YES
Check the signal
C521 of U502
Solder C521, L500 again
Not OK
OK
Check all power source
related U502
Not OK
Resolder or
r
eplace U502
OK
Is
MIC working?
Replace Mic(MIC500) or PBA
No
Yes
END
Summary of Contents for GT-B7300B
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