Manual Image Setup - Lenovo ThinkVision X24-20 User Manual

Table 3-2. Troubleshooting
Problem
The power indicator is
amber, but there is no
image�
One or more of the
pixels appear discolored�
• Fuzzy lines in text or a
blurry image�
• Horizontal or vertical
lines through the
image�

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 to open the OSD menu�
2� Use or
3� Use or
4� Use or
5� When the image no longer looks distorted, press Enter to save the adjustments of Clock and
• 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�
Phase�
6� Press
Possible cause
The video signal cable
is loose or disconnected
from the system or
monitor�
The monitor brightness
and contrast are at the
lowest setting�
This is a characteristic
of the LCD technology
and is not an LCD
defect�
• Image setup has not
been optimized�
• Your system Display
Properties setting have
not been optimized�
to select and press
to select manual and press
to select Clock and Phase adjustment�
to leave the OSD menu�
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�
Adjust the resolution
settings on your system
to match the native
resolution for this
monitor: 1920 x 1080 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�
to access�
to access�
Reference
"Connecting and turning
on your monitor"on
page 1-4
"Adjusting your monitor
image"on page 2-3
Appendix A�"Service
and Support"on page
A-1
"Adjusting your monitor
image"on page 2-3
"Selecting a supported
display mode"on page
2-7
See the Advanced
section of your system's
display properties�
Chapter 3. 3-4