Lenovo LI2821 Wide LCD Monitor - Manual (Page 30)

Table 3-2. Troubleshooting
Problem Possible cause Suggested action Reference
The power
indicator is
orange, but there
is no image. The video signal cable
is loose or disconnected
from the system or
monitor. Be sure the video cable is
connected with the system
properly. "Connecting and
turning on your
monitor"on page 1-6
The monitor brightness
and contrast are at the
lowest setting. Adjust the brightness and
contrast setting on the OSD
menu.
"Adjusting your
monitor image"on page
2-3
One or more of the
pixels appear
discolored. This is a characteristic
of the LCD technology
and is not an LCD
defect. If there are more than five
pixels missing, contact the
Support Center. Appendix A."Service
and Support"on page
A-1
• Fuzzy lines in
text or a
blurry image.
• Horizontal or
vertical lines
through the
image.
• Image setup has not
been optimized.
• Your system
Display Properties
setting have not
been optimized.
Adjust the resolution
settings on your system to
match the native resolution
for this monitor: 1920 x
1080 at 60 Hz(VGA),3840 x
2160 at 30Hz(HDMI), 3840
x 2160 at 60Hz(DP)
"Adjusting your
monitor image"on page
2-3
Perform automatic image
setup. If automatic image
setup does not help, perform
manual image setup. "Selecting a supported
display mode"on page
2-8
When working in the native
resolution, you may find
additional improvements by
adjusting the Dots Per Inch
(DPI) setting on your
system. See the Advanced
section of your
system’s display
properties.
Manual image setup
If automatic image setup does not establish the image that you prefer, perform manual image
setup.
Note: Have your monitor powered on for about 15 minutes, until the monitor warms up.
1. Press at the bottom of the monitor to open the OSD menu.
2. Use or to select and press to access.
3. Use or to select manual and press to access.
4. Use or to select Clock and Phase adjustment.
• Clock (pixel frequency) adjusts the number of pixels scanned by one
horizontal sweep. If the frequency is not correct, the screen shows vertical
stripes and the picture does not have the correct width.
• Phase adjusts the phase of the pixel clock signal. With a wrong phase
adjustment, the picture has horizontal disturbances in light picture.
5. When the image no longer looks distorted, save the Clock and Phase adjustments.
6. Press
to leave the OSD menu.
Chapter 3.
3-4