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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.
Power Button is
Locked is Displayed
26
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.
The monitor's power button is locked.
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 OSD lockout
function.
Press and hold the power
button for 10 seconds to disable
the power button lock function.
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