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Flow Chart of Troubleshooting
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9-11
9-6. Speaker Part(Melody)
)
U600 pin#6 (C605) and
pin#28 (C603) = 2.8V?
Speaker does not work
Check the Clock signal at
Pin#2 of U600
(19.2MHz)
Check the clock generation circuit
(related to U600 and U400)
END
No
Yes
No
Resolder or replace U600
U600 pin 17,20 ≒ 2.6V
(When UCP300 operate)
Check UCP300
Yes
No
Check the
signals of
speaker input
Check the circuit related to
memody signal
Yes
No signal
Is Speaker working?
No
OK
Change the Speaker
Yes
Yes
Summary of Contents for SGH-ZV50
Page 36: ...8 PCB Diagrams 8 1 Top ...
Page 37: ...PCB Diagrams 8 2 Bottom ...