NEC AS191, AS171 user manual Troubleshooting

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Troubleshooting

No picture

The signal cable should be completely connected to the display card/computer.

The display card should be completely seated in its slot.

Check 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.

Check the signal input.

Power Button does not respond

Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.

Image persistence

Image persistence is when a “ghost” of an image remains on the screen even after the monitor has been turned off. 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 the monitor off for as long as an 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 using a screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.

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 60 Hz refresh rate.

Picture is not as bright

Make sure ECO MODE is turned off.

LED on monitor is not lit (no green or amber color can be seen)

Power Switch should be in the ON position and power cord should be connected.

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

If no video is present on the screen, turn the Power button off and on again.

Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).

English-14

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Contents AccuSync AS171 AccuSync AS191 Index English-16Registration Information DeclarationDeclaration of the Manufacturer English-1Canadian Department of Communications Compliance Statement FCC InformationDeclaration of Conformity English-2Recommended use Safety Precautions and MaintenanceEnglish-3 Cleaning the LCD Panel Cleaning the CabinetErgonomics English-4Contents Quick StartRemove Monitor Stand for Mounting TiltEnglish-6 Connecting a Flexible Arm SpecificationsRemoving the Base English-7Controls Basic function at pressing each key ButtonOSD structure English-8Brightness English-9OSD Warning English-10Monitor Specifications AccuSync AS171 Monitor SpecificationsEnglish-11 Monitor Specifications AccuSync AS191 Monitor English-12Features English-13Troubleshooting This display is designed for both you and the planet TCO DisplaysEnglish-15 Manufacturer’s Recycling and Energy Information Disposing of your old NEC productEnergy Saving Weee Mark European Directive 2002/96/EC