Lenovo NetVista A20 (English) Quick Reference - Page 16
Glare and lighting, Air circulation, Electrical outlets and cable lengths
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Adjust the monitor so that the top of the screen is at, or slightly below, eye level. Place the monitor at a comfortable viewing distance, usually 51 to 61 cm (20 to 24 in.), and position it so that you can view it without having to twist your body. Glare and lighting Position the monitor to minimize glare and reflections from overhead lights, windows, and other light sources. Place the monitor at right angles to light sources whenever possible. Reduce overhead lighting, if necessary, by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains or blinds to block the sunlight. You might have to adjust the Brightness and Contrast controls on the monitor as the lighting changes throughout the day. Where it is impossible to avoid reflections or to adjust the lighting, place an antiglare filter over the screen. However, these filters might affect the clarity of the screen image; try them only after you have exhausted other methods of reducing glare. Dust compounds problems associated with glare. Clean your monitor screen periodically using a soft cloth moistened with a nonabrasive, liquid glass cleaner. Air circulation Your computer and monitor produce heat. The computer fan pulls in fresh air and forces out hot air. The monitor lets hot air escape through vents. Blocking the air vents can cause overheating, possibly resulting in malfunction or damage. Place the computer and monitor so that nothing blocks the air vents; usually 51 mm (2 in.) of air space is sufficient. Also, make sure the vented air is not blowing on someone else. Electrical outlets and cable lengths The location of electrical outlets and the length of device power cords and cables might determine the final placement of your computer. When arranging your workspace: v Avoid the use of extension cords. Whenever possible, plug the computer power cord directly into an electrical outlet. v Keep power cords and cables neatly routed away from walkways and other areas where they might be accidentally dislodged. For more information about power cords, see "Power cord notice" on page 43. 2 Quick Reference