Support And Troubleshooting - HP L7014 Maintenance And Service Manual

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.
Input Signal Not Found 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.
OSD Lockout is displayed.
Power Button Lockout is
displayed.
Possible Cause
Power cord is disconnected.
Power button is turned off.
Computer power is turned off.
Video cable is not connected.
System is in sleep mode.
Video card is incompatible.
Brightness is too low.
Monitor video
cable is
disconnected.
No video signal.
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
Lockout function is
enabled.
The monitor's power
button lockout function
is enabled.
Solution
Connect the monitor power cord.
Press the monitor 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.
Turn on power to the computer.
Connect the DisplayPort video cable between the
computer and monitor. Be sure the computer power is off
while you connect the video cable.
Press any key on the keyboard or move the mouse to
exit sleep mode.
Replace the video card or connect the DisplayPort
cable to the computer's onboard DisplayPort.
Open the OSD menu and select Brightness to adjust
the brightness scale as needed.
Connect the DisplayPort video cable between the
computer and monitor. Be sure that the computer power
is off while you connect the video cable.
Be sure the computer has sent out a video signal.
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 monitor bezel for
seconds to disable the OSD Lockout function.
Press and hold the monitor power button for seconds to
disable the power button lockout function.
17