Table of Contents
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
Table 4-2:
Solving common problems
Problem
Screen is blank or
video is flashing.
Image appears
blurred,
indistinct, or too
dark.
Check Video Cable
is displayed on
screen.
Input Signal Out
of Range is
displayed on
screen.
The monitor is
off, but it did not
seem to enter
into Sleep mode.
On-Screen Menus
are Locked is
displayed.
Possible cause
Power cord is disconnected.
Monitor is off.
Video cable is improperly connected.
System is in Sleep mode.
Video card is incompatible.
Brightness is too low.
Monitor video cable is disconnected.
Video resolution and/or refresh rate are set higher
than what the monitor supports.
The monitor's power saving control is disabled.
The monitor's OSD lock function is enabled.
Solution
Connect the power cord.
Power the power button.
NOTE: If pressing the Power
button has no effect, press
and hold the power button
for 10 seconds to disable the
Power button lockout
feature.
Connect the video cable
properly.
Press any key on the
keyboard or move the
mouse to exit Sleep mode.
Open the OSD menu and
select the Input Control
menu. Set Auto-Switch Input
to Off and manually select
the input
Open the OSD menu and
select Brightness to adjust
the brightness scale as
needed.
Connect the appropriate
video signal cable between
the computer and monitor.
Be sure that the computer
power is off while you
connect the video cable.
Change the settings to a
supported setting.
Open the OSD menu and
select Power Control > Auto-
Sleep Mode and set auto-
sleep to On.
Press and hold the Menu
button on the front bezel to
10 seconds to disable the
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