Sharp SGH-C130 - Manual (Page 46)

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Flow Chart of Troubleshooting
10-12
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10-1-5. Receiver Part
10-1-6. Speaker Part
There is no sound from the Receiver
Is the terminal of Receiver
O.K ?
No
Replace the Receiver
Yes
No
Yes
Check U107,R192,193
Is there any signals at
the pin#A11 and
pin#N12 of U107 ?
END
①
②
There is no sound from the Buzzer
Is the terminal of Speaker
O.K ?
Replace the Speaker
Is there any signals at
the pin#A13 and
pin#N12 of U107 ?
Check U107,R198,R199
END
Yes
Yes
Yes
Yes
No
No