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Flow Chart of Troubleshooting
9-14
9-8. Speaker Part
C534, C536 ≥ 2V?
(When MP3 file is played)
Speaker does not work
U501 Pin 1A, 2A ≥ 2V?
(When MP3 file is played)
Resolder U501, C534, C536
END
No
Yes
No
Check UCP300
HDC600 Pin 56, 58 ≥ 2V?
(When MP3 file is played)
Resolder U500
Yes
No
Check the signals of
speaker input
Check the circuit related to
melody signal
Yes
No signal
Is Speaker working?
No
OK
Change the Speaker
Yes
Yes
Содержание SGH-Z720M
Страница 44: ...8 PCB Diagrams 8 1 Top ...
Страница 45: ...PCB Diagrams 8 2 Bottom ...