Speaker Part(Melody) - Samsung SGH-Z560 Service Manual

Flow Chart of Troubleshooting
9-4. Speaker Part (Melody)
Speaker does not work
Yes
No
Battery Volt >= 3.5V
Change battery
Yes
No
LCD J9 = 4.0V pulse
Resolder J9 pad
signal?
Yes
No
Is Speaker working?
Change the Speaker
Yes
No
Check the circuit
Change or Resolder C20,C21,R6,R7
from UCP100 to U5(LCD)
(on the LCD module)
Yes
Change the PBA
Yes
END
9-7
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