Before Cleaning Your Computer; Computer, Keyboard, And Monitor; Mouse - Dell Precision Workstation 450 User Manual

Before Cleaning Your Computer

CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the
Shut down the computer through the Start menu.
1
Ensure that your computer and attached devices are turned off. If your computer and
2
attached devices did not automatically turn off when you shut down your computer,
turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
Disconnect any telephone or telecommunication lines from the computer.
3
Disconnect your computer and all attached devices from electrical outlets, and then
4
press the power button to ground the system board.

Computer, Keyboard, and Monitor

• Use a vacuum cleaner with a brush attachment to remove dust from the slots and
holes on your computer and between the keys on the keyboard.
NOTICE: Do not wipe the monitor screen with any soap or alcohol solution. Doing so may
damage the antiglare coating.
• To clean your monitor screen, lightly dampen a soft, clean cloth with water. If possible,
use a special screen-cleaning tissue or solution suitable for the monitor's antistatic
coating.
• Wipe the keyboard, computer, and plastic part of the monitor with a soft cleaning
cloth moistened with a solution of three parts water and one part liquid dishwashing
detergent. Wipe off stubborn stains with a cloth lightly moistened with isopropyl
alcohol.
Do not soak the cloth in the solution or let the solution drip inside your computer or
keyboard.

Mouse

If your screen cursor skips or moves abnormally, clean the mouse. To clean a non-optical
mouse:
Turn the retainer ring on the underside of your mouse counterclockwise, and then
1
remove the ball.
240 Cleaning Yo ur Computer
System Information Guide
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