ViewSonic EP4220, User Manual

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CAUTION:
Immediately unplug your monitor from the wall outlet and refer servicing to qualified service personnel
under the following conditions:
• When the power supply cord or plug is damaged.
• If liquid has been spilled, or objects have fallen into the monitor.
• If the monitor has been exposed to rain or water.
• If the monitor has been dropped or the cabinet damaged.
• If the monitor does not operate normally by following operating instructions.
Recommended Use
CAUTION:
• For optimum performance, allow 20 minutes for warm-up.
• Rest your eyes periodically by focusing on an object at least 5 feet away. Blink often.
• Position the monitor at a 90° angle to windows and other light sources to minimize glare and
reflections.
• Clean the LCD monitor surface with a lint-free, nonabrasive cloth. Avoid using any cleaning
solution or glass cleaner!
• Adjust the monitor’s brightness, contrast and sharpness controls to enhance readability.
• Avoid displaying fixed patterns on the monitor for long periods of time to avoid image persistence
(after image effects).
• Get regular eye checkups.
Ergonomics
To realize the maximum ergonomic benefits, we recommend the following:
• Use the preset Size and Position controls with standard signals.
• Use the preset Color Setting.
• Use non-interlaced signals.
• Do not use primary color blue on a dark background, as it is difficult to see and may produce eye
fatigue due to insufficient contrast.