Speaker Part - Samsung SGH-C250 Service Manual

Flow Chart of Troubleshooting
3-1-5. Receiver Part
There is no sound from the Receiver
Is the terminal of
Receiver O.K ?
Is there any signals at
the pin# P11 and
pin#N12 of UCP101 ?
Is there any signals at
the pin# 3 and pin# 9 of
UCP104 ?

3-1-6. Speaker Part

There is no sound from the Speaker
Is the terminal of Speaker
Is there any signals at
the pin#17 and pin#18
Is there any signals at
the pin# 3 and pin# 9 of
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Yes
Yes
Yes
Yes
END
Yes
O.K ?
Yes
of U106 ?
Yes
UCP104 ?
Yes
END
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No
Replace the Receiver
No
Check UCP101,R140,141
No
Check U104
No
Replace the Speaker
No
Check UCP106,C191,C192
No
Check
3-12
①
②
③
④
U104