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F low Chart of Troubleshooting
7. Receiver Part
Receiver does not work
Yes
No
Resolder or replace U505
U505 pin 14 = Battery Volt?
Yes
No
Replace U302
U505 pin 10(AMP_SD) = "L"?
Yes
No
Check the soldering of the
Modify the speaker wire soldering
speaker wire
Yes
No
Replace the Receiver
Is Receiver working?
Yes
END
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