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Flow Chart of Troubleshooting
9-11
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9-1-5. Receiver Part (Voice)
YES
NO
NO
Is there voice signal at
R509, R510?
Is the terminal of Receiver
OK?
No sound from Receiver
Replace the receiver
Check UCP301
YES
END
YES
Check LCD module
YES
Is the voice signal at pin
#5, #10 of U501?
YES
NO
Check U501