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Flow Chart of Troubleshooting and Circuit Diagrams
3-12
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3-1-6. Speaker Part
There is no sound from speaker
Replace the Speaker
Check the U302
END
The terminal of Speaker is OK
There is signal
@ U302 pin #2
There is signal
@ U304 R331
Check the U304
Check the UCP100
The type of sound from
the Speaker is Melody.
Check the U300
Are there any signal
at the pin #12,24 of U304 ?
The type of sound from
the Speaker is Media File?
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES