Receiver Part; Speaker Part - Samsung SGH-X830 Service Manual

Flow Chart of Troubleshooting

9-1-5. Receiver Part

There is no sound from the Receiver
Is the terminal of Receiver
Is there any signals at
the pin#P11 and
pin#N12 of U100 ?

9-1-6. Speaker Part

There is no sound from the Buzzer
Is the terminal of Speaker
Is there any signals at the
Pin#J6 & J7 of U405 ?
Are there any signals at
the L401, L402
Is there any signals at
the pin#3 and pin#9 of
Yes
O.K ?
Yes
Yes
END
Yes
O.K ?
Yes
Yes
Yes
U403 ?
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Replace the Receiver
No
Check U100,R420,R425,U403
No
Replace the Speaker
No
Check U405
No
Check U404
No
Check U403
9-8
①
②
③
④