Lenovo Li2341t Wide Flat Panel Monitor - Manual (Page 24)

Chapter 3. 3-4
Table 3-2. Troubleshooting
Problem Possible cause Suggested action Reference
The power indicator is
amber, 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 1-4
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.
"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
2-7
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.
Press 1. at the bottom of the monitor to open the OSD menu.
Use 2. or to select and press to access.
Use 3. or to select manual and press to access.
Use 4. or to select Clock and Phase adjustment.
When the image no longer looks distorted, save the Clock and Phase adjustments. 5.
Press 6. to leave the OSD menu.
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.