Dell 1200 owner manual Mouse Non-Optical, CDs and DVDs, 139

Mouse (Non-Optical)

1Turn the retainer ring on the underside of your mouse counterclockwise, and then remove the ball.

2Wipe the ball with a clean, lint-free cloth.

3Blow carefully into the ball cage to dislodge dust and lint.

4Clean the rollers inside the ball cage with a cotton swab moistened lightly with isopropyl alcohol.

5Recenter the rollers in their channels, as needed. Ensure that fluff from the swab is not left on the rollers.

6Replace the ball and retainer ring, and then turn the retainer ring clockwise until it clicks into place.

Touch Pad

1Shut down and turn off your computer.

2Disconnect any attached devices from the computer and from their electrical outlets.

3Remove any installed batteries (see "Removing the Battery" on page 36).

4Moisten 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.

CDs and DVDs

NOTICE: Always use compressed air to clean the lens in the CD/DVD 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 CDs or DVDs, try cleaning the discs.

1Hold the disc by its outer edge. You can also touch the inside edge of the center hole.

NOTICE: To avoid damaging the surface, do not wipe in a circular motion around the disc.

Appendix

139