Lenovo D27-40 27" Monitor User Manual
Page 23
Chapter 3
Reference information
3-3
Table 3-2. Troubleshooting (continued)
Problem
Possible cause
Suggested action
Reference
Screen is blank
and power
indicator is steady
amber or flashing
White.
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.
management” on page
The power
indicator is White,
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.
page 1-3
The monitor
brightness and
contrast are at the
lowest setting.
Adjust the brightness and
contrast setting on the OSD
menu.
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
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: 1920x1080 at 60 Hz.
on page 3-4
Perform automatic image
setup. If automatic image
setup does not help, perform
manual image setup.
display mode” on page
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.
controls” on page 2-6