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•When you disconnect a cable, pull on its connector or on its strain-relief loop, not
on the cable itself. As you pull out the connector, keep it evenly aligned to avoid
bending any connector pins. Also, be fore you connect a cable make sure both
connectors are correctly oriented and aligned.
•Handle components with care. Hold a component such as a memory module by
its edges, not its pins.
•When removing a memory module from the system board or disconnecting a
peripheral device from the computer, wait 5 seconds after turning off the com-
puter before removing the memory module or disconnecting the device to help
avoid possible damage to the system board.
•Before you clean your computer, turn it off, unplug it from its power source, and
remove the battery pack(s).
•Clean your computer with a soft cloth dampened with water rather than with liq-
uid or aerosol cleaners.
•Clean the display with a soft, clean cloth and commercial window cleaner that
does not contain wax or abrasives. Apply the cleaner to the cloth; then stroke the
cloth across the display in one direction, moving from the top of the display to the
bottom. If the display contains grease or some other contaminant, use isopropyl
alcohol instead of commercial window cleaner.hese chapters a
•If your computer gets wet or is damaged, follow the procedures described in
Chapter 2, “Troubleshooting Your Computer.” If, after following these proce-
dures, you confirm that your computer is not operating properly, contact Dell
Computer Corporation. (See Chapter 4, “Getting Help,” for the appropriate tele-
phone number.)
Ergonomic Computing Habits CAUTION: Improper or prolonged keyboard use may result in injury.
CAUTION: Viewing the display or external monitor screen for extended
periods of time may result in eye strain.
For comfort and efficiency, observe the following ergonomic guidelines when setting
up and using your computer:
•Position your computer directly in front of you as you work.
•Adjust the tilt of the computer’s display, its contrast and/or brightness settings,
and the lighting around you (such as overhead lights, desk lamps, and the cur-
tains or blinds on nearby windows) to minimize reflections and glare on the
display.
•When using an external monitor with your computer, set the monitor at a com-
fortable viewing distance (usually 510 to 610 millimeters [20 to 24 inches] from
your eyes). Make sure the monitor screen is at eye level or slightly lower when
you are sitting in front of the monitor.
•Use a chair that provides good lower-back support.
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