Dell™ Latitude™ X200 System Infor mation Guide 11• When preparing to remove a memory module from the system board,turn off the computer, disconnect the AC adapter cable, and then wait5 seconds before proceeding to help avoid possible damage to thesystem board.• Clean the display with a soft, clean cloth and commercial windowcleaner that does not contain wax or abrasives. Apply the cleaner to thecloth; then stroke the cloth across the display in one direction, movingfrom the top of the display to the bottom. If the display containsgrease or some other contaminant, use isopropyl alcohol instead ofcommercial window cleaner.• If your computer gets wet or is damaged, follow the proceduresdescribed in "Solving Problems" in the User’s Guide. If, after followingthese procedures, you confirm that your computer is not operatingproperly, contact Dell. (See "Getting Help" in the User’s Guide for theappropriate telephone number.)Ergonomic Computing HabitsCAUTION: Improper or prolonged keyboard use may result ininjury.CAUTION: Viewing the display or external monitor screen forextended periods of time may result in eye strain.For comfort and efficiency, observe the following ergonomic guidelineswhen setting up and using your computer:• This is a portable computer and is not designed for continuousoperation as office equipment. For extended use in an office, anexternal monitor and external keyboard are recommended.• Position your computer directly in front of you as you work.• Adjust the tilt of the computer’s display, its contrast and/or brightnesssettings, and the lighting around you (such as overhead lights, desklamps, and the curtains or blinds on nearby windows) to minimizereflections and glare on the display.• When using an external monitor with your computer, set the monitorat a comfortable viewing distance (usually 510 to 610 millimeters [20to 24 inches] from your eyes). Make sure the monitor screen is at eyelevel or slightly lower when you are sitting in front of the monitor.• Use a chair that provides good lower-back support.
