![background image](http://html.mh-extra.com/html/viewsonic/vg170mvlcds23724-3w/vg170mvlcds23724-3w_service-manual_1021066010.webp)
6. Trouble Shooting Flow Chart
YES
NO
ON
OFF
GREEN
Hsync,Vsync
o
r DE error
ORANGE
OSD no respones
Too dim
The brightness is
different between upper
and lower side of panel
Pa
r
t
ial
picture without
Color
Vertical,Horizontal
None synchronousness
A few of colorfully
Vertical lines
Even(or odd) vertical
Line is dark
Check SW board S1~S5
Check OSD adjustment
Check inverter
Check backlight
Check signal cable
Check I/F board
Check LCD panel
Check LCD panel
Check I/F board
Check SW board
JP1
Check inverter
Check I/F board
Check
power
LED
Check display
resolution
Check inverter
Check I/F board CN1
Check LCD cable
Check I/F board CN1
Check LCD panel J1
Check I/F board
A dark picture
or a picture
full of
colorfully
vertical lines
Does
picture
display
Back-light
On or off?
RGB SIGNAL
ERROR
7
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG170m