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SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
2-1-6. Speaker Part
There is no sound from speaker
Check the wave of
the pin of U301's clock
The pin #32 of U301
The pin #15 of U301
Are there any signal
at the pin #4 of U301?
Are there any signal
at the pin #1,2 of CN502 ?
Is speaker working
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19.2MHz ?
≒
YES
2.6V
≒
3.3V ?
≥
YES
YES
YES
YES
END
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NO
NO
NO
NO
NO
2- 12
Check OSC801 and
U802
Check the U500
Check the U301
Check the U302
Replace the speaker
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