ViewSonic VA1930wm-1 User Manual

ViewSonic Corporation Confidential - Do Not Copy VA1930wm-1
43
5. Backlight can’t be turned on
U105 FAIL
Black screen
Check pin4 of
CN101
Check CCFL-
Enable(pin 85)
of U105
Check crystal (pin 96,97)
waveform of U105
Check reset (pin84) of
U105
Check power supply
for U105
Check power
supply:pin 1,2 of
CN101
Check R167,Q106,
R108,R110
Inverter Fail
Check
X101,C153,C154
Check C144,R172
Check FB102,FB103,
FB105,FB106
Power fail
NG
NG
NG
NG
NG
NG
YES
YES
YES
YES
YESYES

ViewSonic VA1930wm-1 Specifications

General

Brand	ViewSonic
Model	VA1930wm-1
Category	Monitor
Language	English