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Chapter 4 Troubleshooting
Problems
Possible cause and remedy
7. The screen is too bright or too dark.
• Adjust using <Brightness> or <Contrast>. (The LCD
monitor backlight has a fixed life span. When the screen
becomes dark or begins to flicker, contact your local
dealer.)
• Turn on the Auto EcoView function. (see
) The
monitor detects the environmental brightness to adjust
the screen brightness automatically.
8. Afterimages appear.
• Afterimages are particular to LCD monitors. Avoid
displaying the same image for a long time.
• Use the screen saver or power save function to avoid
displaying the same image for extended periods of time.
9. Green/red/blue/white dots or defective dots remain
on the screen.
• This is due to LCD panel characteristics and is not a
failure.
10. The display image is appeared in lengthwise.
• Check whether the kind of cables connected with the
monitor and the PC. (Connect the monitor and cables
correctly by referring to “Connecting Cables” in Setup
Manual (page 3).)
11. The adjustment menu does not appear.
• Check whether the operation lock function works. (
)
12. The auto-adjustment function does not work
correctly.
• This function does not work when digital signal is input.
• This function works correctly when an image is fully
displayed over the display area.
It does not work properly when an image is displayed
only on a part of the screen (DOS prompt window, for
example) or when a black background (wallpaper, etc.) is
in use.
This function does not work correctly with some graphics
boards.
13. No audio output
• Check whether volume is set to “0”.
• Check the settings of the PC and the audio playback
software.
Touch panel problems
Problems
Possible cause and remedy
14. Cursor position is not correct. / Cursor jumps.
• Turn off and on the monitor. If the symptom is not
improved, perform the calibration on the monitor.
• Touch with one finger only.
15. No touch sound.
• The touch sound may not be output from the external line
out of the PC depending on the hardware configuration.
• Under Windows 7, touch sound is only output through
the audio output terminal of the PC. To hear touch sound,
connect speakers.