Speaker Part - Samsung SGH-S342i Service Manual

5. Speaker Part

There is no sound from the Speaker
Is the terminal of Speaker
Are there any signals at
the C502,C503
No Is there any signals
at the pin#5 and
pin#7 of U400 ?
The pin#4 of
Check the
U400 is "Low"
U401
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O.K ?
Yes
Yes
Yes
The type of sound
from the Speaker is
Yes
No
Yes
Check the U200
Check the U400
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SGH-S342i Flow Chart of Troubleshooting
No
Replace the Speaker
No
Check LCD or Replace CN500
No
Melody
Is there any signals
at the pin#2 and
pin#10 of U400 ?
No
The pin#4 of
U400 is "High"
END
2-5
No
Yes
Check the
U401
Yes