Support And Troubleshooting; Solving Common Problems - HP VH240a User Manual

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Support and troubleshooting

Solving common problems

The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
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.
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 Lockout
function is enabled.
The monitor's Power Button
Lockout feature is enabled.
Solution
Connect the power cord.
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.
Connect the video cable properly. See
Connecting the cables on page 4
information.
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 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. See
Preset display resolutions on page 21
information.
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
for 10 seconds to disable the OSD Lockout
function.
Press and hold the power button for 10 seconds
to disable the Power Button Lockout feature.
Solving common problems
for more
for more
15