6.4 Backlight can’t be turned on
Black Screen
Check VCC
5V
Power Fail
Check VCC3.3V and
VCC1.8V
Check
FB103
Check Reset
Waveform
Check C151
Check Crystal
pin(96,97)waveform
Check
Check CCFL
Enable
Check
pin10 of
Invert fail
U104 fail
Check R147,R111,R112,
and Q106
NG
OK
OK
OK
OK
NG
OK
OK
NG
NG
NG
Check Crystal
Waveform
Check
FB102
NG
Confidential - Do Not Copy
V
X2450W/WM
-
LED-1
ViewSonic Corporation
74
Summary of Contents for VS13518-1W
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Page 29: ...Disassembly Procedure Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 28 ...
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Page 34: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 33 ...
Page 35: ...Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 34 ...
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Page 85: ...9 PCB Layout Diagrams Confidential Do Not Copy VX2450W WM LED 1 ViewSonic Corporation 84 ...
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