HP L1908w HP L1750, L1950, L1710, and L1908w LCD Monitors - User Guide - Page 41

Troubleshooting, Solving Common Problems - monitor problems

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A 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. Power cord is disconnected. Connect the power cord. Power switch 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 lock-out feature. Video cable is improperly connected. Screen blanking is active. Image appears blurred, indistinct, or too dark. Brightness and contrast are too low. Connect the video cable properly. Refer to Chapter 3, Setting Up the Monitor on page 5 for more information. Press any key on the keyboard or move the mouse to inactivate the screen blanking utility. Press the -/Adjust button on the front panel. If this does not correct the image, press the Menu button to open the OSD Menu, and adjust the brightness and contrast scales as needed. Image is not centered Position may need adjustment. Press the Menu button to access the OSD menu. Select Image Control/Horizontal Position or Vertical Position to adjust the horizontal or vertical position of the image. Check Video Cable is displayed on screen. Monitor video cable is disconnected. Connect the DVI-D signal cable to the DVI connector on the computer (select models), or the VGA cable to the VGA connector on the computer. Be sure that the computer power is off while connecting the video cable. Input Signal Out of Range. Change Settings to 1280 x 1024 @ 60Hz or Input Signal Out of Range. Change Settings to 1440 x 900 @ 60Hz is displayed on screen. Video resolution and/or refresh rate are set higher than what the monitor supports. Restart the computer and enter Safe Mode. Change the settings to a supported setting (see Recognizing Preset Display Resolutions on page 42). Restart the computer so that the new settings take effect. HP Display LiteSaver doesn't turn off The Activity Extension time the monitor screen. has not elapsed. The default Activity Extension value is set to 10 minutes. The HP Display LiteSaver will wait to detect no input or movement from the keyboard or mouse for 10 consecutive minutes after the Display Off time has passed, before the monitor enters into lowpower mode. For example, if the Display Off time is set to 5 minutes from the current time and the Activity Solving Common Problems 35

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A
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.
Power cord is disconnected.
Connect the power cord.
Power switch 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 lock-out feature.
Video cable is improperly
connected.
Connect the video cable properly. Refer to Chapter
3,
Setting Up the Monitor
on page
5
for more
information.
Screen blanking is active.
Press any key on the keyboard or move the mouse
to inactivate the screen blanking utility.
Image appears blurred, indistinct, or
too dark.
Brightness and contrast are
too low.
Press the
—/Adjust
button on the front panel. If this
does not correct the image, press the
Menu
button
to open the OSD Menu, and adjust the brightness
and contrast scales as needed.
Image is not centered
Position may need adjustment.
Press the
Menu
button to access the OSD menu.
Select
Image Control/Horizontal Position
or
Vertical
Position
to adjust the horizontal or vertical position
of the image.
Check Video Cable
is displayed on
screen.
Monitor video cable is
disconnected.
Connect the DVI-D signal cable to the DVI connector
on the computer (select models), or the VGA cable
to the VGA connector on the computer. Be sure that
the computer power is off while connecting the video
cable.
Input Signal Out of Range. Change
Settings to 1280 x 1024 @ 60Hz
or
Input Signal Out of Range. Change
Settings to 1440 x 900 @ 60Hz
is
displayed on screen.
Video resolution and/or refresh
rate are set higher than what
the monitor supports.
Restart the computer and enter Safe Mode. Change
the settings to a supported setting (see
Recognizing
Preset Display Resolutions
on page
42
). Restart
the computer so that the new settings take effect.
HP Display LiteSaver doesn't turn off
the monitor screen.
The Activity Extension time
has not elapsed.
The default Activity Extension value is set to 10
minutes. The HP Display LiteSaver will wait to detect
no input or movement from the keyboard or mouse
for 10 consecutive minutes after the Display Off time
has passed, before the monitor enters into low-
power mode. For example, if the Display Off time is
set to 5 minutes from the current time and the Activity
Solving Common Problems
35