3
Support and troubleshooting
Solving common problems
The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
Problem
Possible Cause
Solution
Screen is blank or video is
flashing.
Power cord is disconnected.
Connect the power cord.
Power
button is turned off.
Press the back bezel
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.
Video cable is improperly connected.
Connect the video cable properly. Refer to
Connecting the
cables on page 6
for more information.
System is in sleep mode.
Press any key on the keyboard or move the mouse to
inactivate the screen blanking utility.
Video card is incompatible.
Open the OSD menu and select the Input Control menu. Set
Auto-Switch Input to Off and manually select the input.
Image appears blurred,
indistinct, or too dark.
Brightness is too low.
Open the OSD menu and select Brightness to adjust the
brightness scale as needed.
Input Signal Not Found is
displayed on the screen.
Monitor video cable is disconnected.
Connect the appropriate video signal cable between the
computer and monitor. Be sure that the computer power is off
while connecting the video cable.
Input Signal Out of Range is
displayed on screen.
Video resolution and/or refresh rate
are set higher than what the monitor
supports.
Change the settings to a supported setting (see
Preset display
resolutions on page 20
).
The monitor is off but it did
not seem to enter into a low-
power sleep mode.
The monitor's power saving control is
disabled.
Open the OSD menu and select Power Control, select Auto-
Sleep Mode, and then set auto-sleep to On.
OSD Lockout is displayed.
The monitor's OSD Lockout function
is enabled.
Press and hold the
Menu
button on the rear panel for 10
seconds to disable the OSD Lockout function.
Power Button Lockout is
displayed.
The monitor's Power Button Lockout
feature is enabled.
Press and hold the
Power
button for 10 seconds to unlock the
Power
button function.
Button lockouts
Holding down the
Power
button or
Menu
button for ten seconds will lock out the functionality of the buttons.
You can restore the functionality by holding the buttons down again for ten seconds. This functionality is only
available when the monitor is powered on, displaying an active signal, and the OSD is not open.
16
Chapter 3 Support and troubleshooting
Summary of Contents for 27b
Page 1: ...User Guide ...
Page 4: ...iv About This Guide ...
