ViewSonic VG750 Service Manual - Page 24
Change, Panel, Uniformity, cable, directly
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UPC - 766907539325
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Is screen scrolling ? Yes No 4 Change VGA Cable Ye Change Main Board Yes Is screen flickering ? Yes / Change Np Main Board Change LCD Panel> No Yes 4 4 C) s LCD line defective . Yes ►/ Change LCD Panel No Yes 4 Yes Adjust "H.size "Fine tune" or "Auto Image Adjust" Yes '0 Change Main Board Yes 41 Bad Uniformity ? No Yes Change Ye Inverter Board Yes Change LCD Panel Yes Adjust "H.size" Have line bar or noise. Yes "Fine tune" or "Auto Image Adjust" No Yes 4 Ghost image ? No 4 Yes ► Connect VGA" cable to the PC directly Yes End Change Main Board Yes Check the Compatibility on the computer/ Yes CF:eedback info. to ViewSonic 5-3 ViewSonic Corporation CONFIDENTIAL - DO NOT COPY
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C)
Is
screen
scrolling
?
No
4
Is
screen
fl
ickering
?
No
4
s
LCD
line
defective
.
No
4
Yes
Change
VGA
Cable
Ye
Change
Main
Board
Yes
/
Main
Board
LCD
Panel>
Np
Yes
Change
Change
Yes
4
Yes
►/
Change
LCD
Panel
Bad
Uniformity
?
Yes
Yes
Yes
Adjust
"H.size
"Fine
tune"
or
"Auto
Image
Adjust"
Yes
Change
Main
Board
Change
Ye
Change
Inverter
Board
LCD
Panel
No
Yes
Have
line
bar
or
noise.
No
4
Ghost
image
?
No
4
End
Adjust
"H.size"
Yes
"Fine
tune"
or
"Auto
Image
Adjust"
Yes
Yes
Connect
VGA"
►
cable
to
the
PC
directly
Yes
Yes
Change
Main
Board
Yes
Check
the
Compatibility
on
the
computer/
Yes
C
F:eedback
info.
to
ViewSonic
'0
Yes
41
5-3
ViewSonic
Corporation
CONFIDENTIAL
-
DO
NOT
COPY