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Table 3-2. Troubleshooting
Problem
Possible cause
The power
The video signal cable
indicator is amber,
is loose or disconnected
but there is no
from the system or
image.
monitor.
The monitor brightness
and contrast are at the
lowest setting.
One or more of the
This is a characteristic
pixels appear
of the LCD technology
discolored.
and is not an LCD
defect.
•
Fuzzy lines in
•
Image setup has no
text or a
been optimized.
blurry image.
•
Your system
•
Horizontal or
Display Properties
vertical lines
setting have not
through the
been optimized.
image.
Suggested action
Be sure the video cable is
connected with the system
properly.
Adjust the brightness and
contrast setting on the OSD
menu.
If there are more than five
pixels missing, contact the
Support Center.
t
Adjust the resolution
settings on your system to
match the native resolution
for this monitor: 3840 x
2160 at 60 Hz.
Perform automatic image
setup. If automatic image
setup does not help, perform
manual image setup.
When working in the native
resolution, you may find
additional improvements by
adjusting the Dots Per Inch
(DPI) setting on your
system.
Reference
"Connecting and
turning on your
ThinkVision 28" on
page 1-4
"Adjusting your
monitor image" on
page 2-3
"Service and Support"
on page A-1
"Adjusting your
monitor image" on
page 2-3
" Selecting a supported
display mode" on page
2-14
See the Advanced
section of your
system's display
properties.
3-4
Chapter 3.