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Flow Chart of Troubleshooting
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7-15
7. Receiver Part
U505 pin 14 = Battery Volt?
Resolder or replace U505
END
No
Yes
Yes
Receiver does not work
Is Receiver working?
Replace the Receiver
No
Yes
No
Replace U302
Yes
Check the soldering of the
speaker wire
No
Modify the speaker wire soldering
Yes
U505 pin 10(AMP_SD) = "L"?