Lenovo ThinkVision T23i-30 23" Monitor User Manual
Page 31
3-4 T23i-30 Flat Panel Monitor User’s Guide
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
Check the Power options
settings on your computer.
management” on page
2-10
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 1-5
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
A-1
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:
1920 x 1080 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.
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.