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Flow Chart of Troubleshooting
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9-7
9-4. Speaker Part (Melody)
LCD J9 = 4.0V pulse
signal?
Speaker does not work
Resolder J9 pad
END
No
Yes
No
Change battery
Change the PBA
Yes
No
Yes
Is Speaker working?
Yes
Change the Speaker
Yes
Battery Volt >= 3.5V
Change or Resolder C20,C21,R6,R7
(on the LCD module)
Check the circuit
from UCP100 to U5(LCD)
Yes
No
Summary of Contents for SGH-Z560
Page 29: ...8 PCB Diagrams 8 1 Top ...
Page 30: ...PCB Diagrams 8 2 Bottom ...