Lenovo ThinkVision Pro2840m Wide Flat Panel Monitor - Manual (Page 23)

Table3-2.Troubleshooting(continued)
Problem Possible cause Suggested action Reference
Screen is blank
and power
indicator is
steady amber or
flashing green
The monitor is in
Standby/Suspend
mode
● Press any key on the keyboard
or move the mouse to restore
operation.
● Check the Power options
settings on your computer.
“Understanding power
management” on page
2-7
The power
indicator is
green, 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 power
indicator is
green, but there
is no image.
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
discoloured
This is a characteristic
of the LCD
technology and is not
an LCD defect.
If there are more than five pixels
missing, contact the Customer
Support Centre.
Appendix A, “Service and
Support” on page A-2
● 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:
3840 x 2160 at 60 Hz.
“Adjusting your monitor
image” on page 2-3
● 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.
Perform automatic image setup.
If automatic image setup does
not help, perform manual
image setup.
“Selecting a supported
display mode” on page 2-6
● 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.
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.
The image is not
acceptable when
switching to
dual mode
It has not set the
optimum resolution
for each mode
● Use ThinkVision Duo
software to optimize the dual
screen operation
● Adjust graphic card resolution
manually
“Using the direct access
controls” on page 2-3
2-3 ThinkVision Pro2840m Flat Panel Monitor User’s Guide