Lenovo 61B4MAT1EU Manuale d'uso - Pagina 29
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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.(For VGA [analog] only)
Note: Have your monitor powered on for about 15 minutes, until the monitor warms up.
1.
Press
2.
Use
or
3.
Use
or
4.
Use
or
•
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, press Enter to save the adjustments of Clock
and Phase.
6. Press
to leave the OSD menu.
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 open the OSD menu.
to select
and press
to select Manual and press
to select Clock or Phase adjustment.
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
1200 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 1-5
"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
2-8
See the Advanced
section of your
system's display
properties.
3-4
Chapter 3.