Dell Dimension XPS 50 Reference Manual page 24

1-6 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide
To clean the exterior of the computer, monitor, and keyboard, perform the following
steps:
1. Place the strap around your wrist and attach the other end to an unpainted metal
surface on the chassis, such as the power supply bracket, that is connected to
chassis ground.
2. Turn off the computer, monitor, and any other attached devices, and disconnect
them from their power sources.
3. Use the vacuum cleaner to remove any dust from the slots and holes on the com-
puter and between the keys on the keyboard.
4. Moisten a soft cleaning cloth with a solution of three parts water and one part liq-
uid dishwashing detergent.
Do not soak the cloth in the solution; you must not let the solution drip inside the
computer or keyboard.
5. Use the moistened cloth to wipe the computer cover, the keyboard, and the exte-
rior of the monitor.
If the screen cursor skips or moves abnormally, clean your mouse by performing the
following steps:
1. Turn the retainer ring counterclockwise to 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. Look for a buildup of dirt on the rollers inside the ball cage. This buildup usually
appears as a stripe running around the middle of the roller.
5. If dirty, clean the rollers using a cotton swab moistened lightly with isopropyl
alcohol.
After cleaning, make sure the rollers are still centered in their channels. Make
sure that fluff from the swab is not left on the rollers.
6. Replace the ball and retainer ring.