NEC LCD2490WUXI User Guide

 32

To realize the maximum ergonomics benefits, we recommend the following:

•  Adjust the Brightness until the background raster disappears.

•  Do not position the Contrast control to its maximum setting.

•  Use the preset Size and Position controls with standard signals.

•  Use the preset Color Setting.

•  Use non-interlaced signals with a vertical refresh rate more than 60Hz.

•  Do not use primary color blue on a dark background, as it is difficult to see 

and may produce eye fatigue to insufficient contrast.

For more detailed information on setting up a healthy work environment, write 

the American National Standard for Human Factors Engineering of Visual Dis-

play Terminal Workstations – ANSI-HFS Standard No. 100-1988 – The Human 

Factors Society, Inc. P.O. Box 1369, Santa Monica, California 90406.

•  When the liquid crystal panel becomes dusty or dirty, wipe gently with a 

soft cloth.

•  Do not rub the LCD panel with hard or coarse material.

•  Do not apply pressure to the LCD surface.

•  Do not use OA cleaner as it will cause deterioration or discolor the LCD 

surface.

•  Unplug the power supply.

•  Gently wipe the cabinet with a soft cloth.

•  Dampen a cloth with a neutral detergent and water, wipe the cabinet and 

then dry with a soft cloth.

NOTE:  Many plastics are used on the surface of the cabinet.  DO NOT clean 

 

with benzene, thinner, alkaline detergent, alcoholic system detergent,  

 

glass cleaner, wax, polish cleaner, soap powder, or insecticide.  Do  

 

not place rubber or vinyl against the cabinet for long periods. These  

 

types of fluids and fabrics can cause the paint to deteriorate, crack,  

 

or peel.