Troubleshooting - NEC MultiSync EX231Wp User Manual

Troubleshooting

No picture
• The signal cable should be completely connected to the display card/computer.
• The monitor does not support DisplayPort converter signal.
• The display card should be completely seated in its slot.
• Front Power Switch and computer power switch should be in the ON position.
• Check to make sure that a supported mode has been selected on the display card or system being used.
(Please consult display card or system manual to change graphics mode.)
• Check the monitor and your display card with respect to compatibility and recommended settings.
• Check the signal cable connector for bent or pushed-in pins.
• If the front LED is dark blue, check the status of the IPM mode (see page 12) or Human sensor (see page 11).
Power Key does not respond
• Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.
• When something is stuck on the bezel, key becomes unresponsive.
Image Persistence
• Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence
occurs when a residual or "ghost" image of a previous image remains visible on the screen. Unlike CRT monitors, LCD
monitors' image persistence is not permanent, but constant images being displayed for a long period of time should be
avoided. To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example, if
an image was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to
erase the image.
NOTE: As with all personal display devices, NEC DISPLAY SOLUTIONS recommends displaying moving images and using a
moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.
Message "OUT OF RANGE" is displayed (screen is either blank or shows rough images only)
• Image is displayed only roughly (pixels are missing) and OSD warning "OUT OF RANGE" is displayed: Either signal clock or
resolution is too high. Choose one of the supported modes.
• OSD warning "OUT OF RANGE" is displayed on a blank screen: Signal frequency is out of range. Choose one of the
supported modes.
Image is unstable, unfocused or swimming is apparent
• Signal cable should be completely attached to the computer.
• Use the OSD Image Adjust controls to focus and adjust display by increasing or decreasing the fine total. When the display
mode is changed, the OSD Image Adjust settings may need to be re-adjusted.
• Check the monitor and your display card with respect to compatibility and recommended signal timings.
• If your text is garbled, change the video mode to non-interlace and use 60Hz refresh rate.
LED on monitor is not lit (no blue or amber colour can be seen)
• Power Switch should be in the ON position, Power cord and AC adapter should be connected.
• Increase LED BRIGHTNESS adjustment.
Picture is not as bright
• Make sure ECO MODE and AUTO BRIGHTNESS are turned off.
• If the brightness fluctuates make sure AUTO BRIGHTNESS is turned off.
• Signal cable should be completely attached.
Display image is not sized properly
• Use the OSD Image Adjust controls to increase or decrease the H. SIZE.
• Check to make sure that a supported mode has been selected on the display card or system being used.
(Please consult display card or system manual to change graphics mode.)
No Video
• Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).
• Some video cards do not output video signal when monitor is turned OFF/ON or disconnect/connect from the AC power cord
under low resolution with DisplayPort.
Brightness difference during multiple monitor usage
• Change Auto Brightness to OFF and adjust brightness.
NOTE: When Auto Brightness is set to ON, the monitor automatically adjusts brightness to the environment.
When condition is difference, monitor brightness will be difference.
Human sensor does not work
• If human icon on SENSOR SETTING (HUMAN SENSING) is located on yellow bar, it is detected that there is person.
• Make sure there is no object in front of Human sensor.
• Make sure there is no equipment which radiating infrared rays in front of monitor.
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