HP DreamColor Z27x Professional Display - Manual (Page 71)

B 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 on front panel of the
monitor is turned off. Press the front panel 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 Setting Up the
Monitor on page 5 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 compatibility. Open the OSD menu and select the Video Input menu.
Set Input Auto-Switch Source to Disable and manually
select the input.
Monitor will not turn on. Master power switch on rear panel
of the monitor is turned Off. Turn the master power switch to On.
Image appears blurred,
indistinct, or too dark. Brightness is too low. Open the OSD menu and select Color Space > Adjust
Luminance to adjust the luminance scale as needed.
Check Video Cable is
displayed on 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
Recognizing Preset Display Resolutions on page 61 ).
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 Management > Auto-
Sleep and set auto-sleep to Enable .
OSD Lockout is displayed. The monitor's OSD Lockout
function is enabled. Press and hold the bottom Menu button for 10 seconds
to disable the OSD Lockout function.
Power Button Lockout is
displayed. The monitor's Power Button
Lockout function is enabled. Press and hold the power button for 10 seconds to
unlock the power button function.
Bezel button LEDs are not
on. By default, the Bezel button LEDs
are set to fade out when not in
use. To set the bezel button LEDs so that they are always on,
open the OSD menu and select
Menu and Message
Control > Bezel Button Auto-Fade > Disable (Always
On) .
Bezel button LEDs are
always on but are too
bright or too dim. Bezel button auto-fade has been
turned off in the OSD and the
brightness needs adjustment. Open the OSD menu and select Menu and Message
Control > Bezel Button Brightness and adjust the
brightness value.
Solving Common Problems 63