Lenovo ThinkVision P27u-20 User Manual page 32

3-2 P27u-20 Flat Panel Monitor User's Guide
Table 3-1. Troubleshooting (continued)
Problem
Screen is blank and The monitor is in
power indicator is Standby/Suspend
breathing white. mode
The power indicator The video signal cable
is white, but there is is loose or
no image. disconnected from the
system or monitor.
The monitor
brightness and
contrast are at the
lowest setting.
One or more of the This is a characteristic
pixels appear of the LCD
discoloured technology and is not
an LCD defect.
Fuzzy lines in text
 
or a blurry image.
Horizontal or

vertical lines
through the image.

Possible cause
Press any key on the

keyboard or move the
mouse to restore operation.
Check the Power options

settings on your computer.
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
Customer Support Centre.
Your system Adjust the resolution settings
Display Properties on your system to match the
setting have not native resolution for this
been optimized. monitor:
3840 x 2160 at 60 Hz.
Your system When working in the native
Display Properties resolution, you may find
setting have not additional improvements by
been optimized. adjusting the Dots Per Inch
(DPI) setting on your system.
Suggested action
"Understanding power
management" on page
2-9
"Connecting and turning
on your monitor" on
page 1-3
"Explore your monitor"
on page 2-1
Appendix C, "Service and
support" on page
C-1
"Explore your monitor"
on page 2-1
See the Advanced section
of your system's display
properties.
Reference