Speaker Part; There Is No Sound From Speaker - Samsung SGH-E316 Service Manual

6. Speaker Part

There is no sound from Speaker

Is the terminal of Speaker O.K.?
Are there any signals
at the C211,C235?
Is there any signals
No
at the pin#5 and pin#7
Check the U101
U100 is "Low"
SGH-E316 Flow Chart of Troubleshooting and Circuit Diagrams
Yes
Yes
Yes
The type of sound from
the Speaker is Melody
of U100?
Yes
No
The pin#4 of
Yes
Check the U302
Check the U100
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No
Replace the Speaker
No
Check LCD or Replace CN201
No
Is there any signals
at the pin#2 and
pin#10 of U100?
No
The pin#4 of
U100 is "High"
Yes
END
5-8
No
Yes
Check the U102