Dell Technical Support Policy (U.s. Only); Touch Pad; Cleaning An Optical Mouse - Dell Inspiron 1521 Owner's Manual

Wipe the keyboard, computer, and monitor plastics with a soft cleaning cloth moistened with a solution of three parts water and one part dishwashing
l
detergent.
Do not soak the cloth or let water drip inside your computer or keyboard.

Touch Pad

1. Shut down and turn off your computer (see
2. Disconnect any attached devices from the computer and from their electrical outlets.
3. Remove any installed batteries (see
4. Moisten a soft, lint-free cloth with water, and wipe it gently across the surface of the touch pad. Do not allow water from the cloth to seep between the
touch pad and the surrounding palm rest.
Mouse
NOTICE: Disconnect the mouse from the computer before cleaning the mouse
If your screen cursor skips or moves abnormally, clean the mouse.
Cleaning a Non-Optical Mouse
1. Clean the outside casing of the mouse with a cloth moistened with a mild cleaning solution.
2. Turn the retainer ring on the underside of your mouse counterclockwise, and then remove the ball.
3. Wipe the ball with a clean, lint-free cloth.
4. Blow carefully into the ball cage or use a can of compressed air to dislodge dust and lint.
5. If the rollers inside the ball cage are dirty, clean the rollers with a cotton swab moistened lightly with isopropyl alcohol.
6. Recenter the rollers in their channels if they are misaligned. Ensure that fluff from the swab is not left on the rollers.
7. Replace the ball and retainer ring, and turn the retainer ring clockwise until it clicks into place.

Cleaning an Optical Mouse

Clean the outside casing of the mouse with a cloth moistened with a mild cleaning solution.
Media
NOTICE: Always use compressed air to clean the lens in the optical drive, and follow the instructions that come with the compressed air product. Never
touch the lens in the drive.
If you notice problems, such as skipping, with the playback quality of your media, try cleaning the discs.
1. Hold the disc by its outer edge. You can also touch the inside edge of the center hole.
NOTICE: To help prevent damage to the surface, do not wipe in a circular motion around the disc.
2. With a soft, lint-free cloth, gently wipe the bottom of the disc (the unlabeled side) in a straight line from the center to the outer edge of the disc.
For stubborn dirt, try using water or a diluted solution of water and mild soap. You can also purchase commercial products that clean discs and provide
some protection from dust, fingerprints, and scratches. Cleaning products for CDs are also safe to use on DVDs.
Dell Technical Support Policy (U.S. Only)
Turning Off Your Computer).
Battery Performance).