Lenovo ThinkVision LT2934z 29-inch Panorama AH-IPS WLED Backlit LCD VoIP Profess - Page 36

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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 1-8 The monitor brightness Adjust the brightness and "Adjusting your and contrast are at the contrast setting on the OSD monitor image"on page lowest setting. menu. 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 • Image setup has not Adjust the resolution "Adjusting your text or a been optimized. settings on your system to monitor image"on page • blurry image. • Horizontal or Your system Display Properties match the native resolution for this monitor: 2560 x 2-3 vertical lines setting have not 1080 at 60 Hz. through the been optimized. Perform automatic image " Selecting a supported image. setup. If automatic image display mode"on page setup does not help, perform 2-9 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. 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 to open the OSD menu. 2. Use or to select and press to access. 3. Use or to select and press to access. 4. Use or to select Clock or 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, select Save to save the adjustments of Clock and Phase. 6. Press to leave the OSD menu. Chapter 3. 3-4

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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 1-8
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
This is a characteristic
If there are more than five
Appendix A."Service
pixels appear
of the LCD technology
pixels missing, contact the
and Support"on page
discolored.
and is not an LCD
defect.
Support Center.
A-1
•
Fuzzy lines in
text or a
blurry image.
•
Horizontal or
vertical lines
through the
•
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: 2560 x
1080 at 60 Hz.
"Adjusting your
monitor image"on page
2-3
Perform automatic image
" Selecting a supported
image.
setup. If automatic image
display mode"on page
setup does not help, perform
2-9
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.
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
to open the OSD menu.
2.
Use
or
to select
and press
to access.
3.
Use
or
to select
and press
to access.
4.
Use
or
to select
Clock
or
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, select
Save
to save the adjustments of
Clock
and
Phase
.
6.
Press
to leave the OSD menu.
Chapter 3.
3-4