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6. Speaker Part
There is no sound fromSpeaker
Y es
The pin#4 of
U 1001 is
" L ow"
N o
C heck U 1001
Is the term inal of Speaker
O .K .?
Y es
A re there any signals
at the pin#20 of C N 1001,
pin#19 of C N 1001
The type of sound
fromthe Speaker is
Y es
A re there any signals
at the pin#5 and
pin#7 of U 1001?
Y es
C heck U 1000
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This Document can not be used without Samsung's authorization
SG H- X450 F low Chart of Troubleshooting
N o
N o
C heck L C Dor R eplace C N 1001
Y es
M elody
A re there any signals
at the pin#2 and
pin#10 of U 1001?
N o
N o
Y es
E N D
7- 7
R eplace the Speaker
N o
Y es
The pin#4 of
U 1001 is
" H igh"
N o
C heck U 500
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