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9-1-6. Speaker Part
Speaker does not work
U501 pin C3 = H
Is Speaker working?
Yes
Yes
C403 = 2.6V ?
Yes
C404 = VDD/2
Yes
Yes
END
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No
Resolder or replace UCP401
No
Replace UCP401
No
Replace UCP401
No
Change the Speaker
9-12
Flow Chart of Troubleshooting
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