Dell Precision T7400: Cleaning Your Computer Computer, Keyboard, and Monitor Mouse (Non-Optical)

Cleaning Your Computer

CAUTION: Before you begin any of the procedures in this section, follow the

safety instructions in the

Product Information Guide

.

Computer, Keyboard, and Monitor

CAUTION: Before you clean your computer, disconnect the computer from the

electrical outlet. Clean your computer with a soft cloth dampened with water. Do

not use liquid or aerosol cleaners, which may contain flammable substances.

• Use a vacuum cleaner with a brush attachment to gently remove dust from

the slots and holes on your computer and from between the keys on the

keyboard.

NOTICE: Do not wipe the display screen with a 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 water.

Do not soak the cloth or let water drip inside your computer or keyboard.

Mouse (Non-Optical)

1

Turn the retainer ring on the underside of your mouse counterclockwise,

and then remove the ball.

2

Wipe the ball with a clean, lint-free cloth.

3

Blow carefully into the ball cage to dislodge dust and lint.

4

Clean the rollers inside the ball cage with a cotton swab moistened lightly

with isopropyl alcohol.

5

Recenter the rollers in their channels, as needed. Ensure that fluff from

the swab is not left on the rollers.

6

Replace the ball and retainer ring, and then turn the retainer ring clockwise

until it clicks into place.

Quick Reference Guide 23