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Flow Chart of Troubleshooting
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3-12
3-1-5. Receiver Part
3-1-6. Speaker Part
Is the terminal of Receiver O.K?
NO
Replace the Receiver(same
Speaker)
IS there any signals at the
Pin #P11,#N12 of UCP201?
NO
Check UPC201,
R312,R313
There is no sound from the Receiver
YES
YES
END
Is the terminal
of Speaker O.K?
Replace the Speaker
YES
NO
END
There is no sound from the Speaker
YES
IS there any signals at the
Pin #P14#P15 of UCD301?
Check UCD 301
NO
NO
NO
YES
YES
YES
IS there any signals at the
L301 , L302?
Check U302
IS there any signals at the
Pin #4, #16 of U301?
Check U301