Lenovo 4449HB1 User Manual - Page 21
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Troubleshooting
If you have a problem setting up or using your monitor, you might be able to solve it
yourself. Before calling your dealer or Lenovo, try the suggested actions that are
appropriate to your problem.
Table 3-2. Troubleshooting
Problem
Possible cause
The words "Out
The system is set to a
of Range" are
display mode which
shown on the
is not supported by
screen, and the
the monitor
power indicator
is flashing green
The image
The video signal cable
quality is
is not connected with
unacceptable
the monitor or system
completely
The color settings
may be incorrect
The automatic image
setup function was
not performed
The power
•
The monitor's
indicator is not
power switch is
lit and there is
not switched on
no image
•
The power cord is
loose or
disconnected
•
There is no power
at the outlet
Screen is blank
The monitor is in
and power
Standby/Suspend
indicator is
mode
steady amber or
flashing green
Suggested action
If you are replacing an
old monitor, reconnect it
and adjust the display
mode to within the
specified range for your
new monitor
If using a Windows
system, restart the system
in safe mode, then select a
supported display mode
for your computer
If these options do not
work, contact the Support
Center
Be sure the signal cable is
firmly plugged into the
system and monitor
Select another color
setting from the OSD
menu
Perform automatic image
setup
•
Be sure the power
cord is connected
properly
•
Be sure the outlet has
power
•
Power on the
monitor
•
Try using another
power cord
•
Try using another
electrical outlet
•
Press any key on the
keyboard or move
the mouse to restore
operation
•
Check the Power
Options settings on
your computer
Reference
"Selecting a
supported display
mode" on page 2-7
"Connecting and
turning on your
monitor" on page 1-3
"Adjusting your
monitor image" on
page 2-3
"Adjusting your
monitor image" on
page 2-3
"Connecting and
turning on your
monitor" on page 1-3
"Understanding
power management"
on page 2-8
3-3
Chapter 3.