Support And Troubleshooting; Solving Common Problems; Button Lockouts - HP S240n 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.
Check Video Cable is
displayed on the screen.
Input Signal Out of Range is
displayed on screen.
The monitor is off but it did
not seem to enter into a low-
power sleep mode.
OSD Lockout is displayed.
Power Button Lockout is
displayed.

Button lockouts

Holding down the
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.
Possible Cause
Power cord is disconnected.
Power button is turned 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.
Power button or Menu button for ten seconds will lock out the functionality of the buttons.
Solution
Connect the power cord.
Press the rear panel Power button.
NOTE: If pressing the Power
hold the Power button for 10 seconds to disable the Power
Button Lockout feature.
Connect the video cable properly. Refer to
cables on page 7 for more information.
Press any key on the keyboard or move the mouse to
inactivate the screen blanking utility.
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 signal cable between the
computer and monitor. Be sure that the computer power is off
while connecting the video cable.
Change the settings to a supported setting (see
resolutions on page 23).
Open the OSD menu and select Power Control, selectAuto-
Sleep Mode, and then set auto-sleep to On.
Press and hold the Menu button on the side panel for 10
seconds to disable the OSD Lockout function.
Press and hold the Power button for 10 seconds to unlock the
Power button function.
Solving common problems
button has no effect, press and
Connecting the
Preset display
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