HP VH240a User Guide - Page 21

Support and troubleshooting, Solving common problems

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3 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. Possible Cause Power cord is disconnected. Monitor is off. Video cable is improperly connected. System is in sleep mode. Video card is incompatible. Image appears blurred, indistinct, or too dark. Input Signal Not Found is displayed on screen. Brightness is too low. Monitor video cable is disconnected. 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. 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. Power Button The monitor's Power Button Lockout is displayed. 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 for more 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 for more 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 15

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Solving common problems
15
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.
Monitor is 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. See
Connecting the cables on page 4
for more
information.
System is in sleep mode.
Press any key on the keyboard or move the
mouse to exit sleep mode.
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 screen.
Monitor video cable is
disconnected.
Connect the appropriate video cable between
the computer and monitor. Be sure that the
computer power is off while you connect 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 21
for more
information.
The monitor is off
but it did not seem
to enter into sleep
mode.
The monitor’s power saving
control is disabled.
Open the OSD menu and select
Power Control
>
Auto-Sleep Mode
and 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 monitor
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 disable the Power Button Lockout feature.