142 Appendixw w w . d e l l . c o m | s u p p o r t . d e l l . c o m • Moisten a soft, lint-free cloth with water and wipe the computer and keyboard. Do not allowwater from the cloth to seep between the touch pad and the surrounding palm rest.Touch Pad1 Shut down and turn off your computer. See "Turning Off Your Computer" on page 105.2 Disconnect any attached devices from the computer and from their electrical outlets.3 Remove any installed batteries. See "Battery" on page 108.4 Moisten a soft, lint-free cloth with water, and wipe it gently across the surface of the touchpad. Do not allow water from the cloth to seep between the touch pad and the surroundingpalm rest.Floppy DriveNOTICE: Do not attempt to clean drive heads with a swab. You might accidentally misalign the headswhich prevents the drive from operating.Clean your floppy drive using a commercially available cleaning kit. These kits containpretreated floppies to remove contaminants that accumulate during normal operation.CDs and DVDsNOTICE: Always use compressed air to clean the lens in the CD/DVD drive, and follow the instructionsthat 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, trycleaning the discs.1 Hold 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.2 With a soft, lint-free cloth, gently wipe the bottom of the disc (the unlabeled side) in astraight 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 alsopurchase 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.FCC Notices (U.S. Only)Most Dell computers are classified by the Federal Communications Commission (FCC) as Class Bdigital devices. To determine which classification applies to your computer, examine all FCCregistration labels located on the bottom, side, or back panel of your computer, on card-mountingbrackets, and on the cards themselves. If any one of the labels carries a Class A rating, your entirecomputer is considered to be a Class A digital device. If all labels carry an FCC Class B rating asdistinguished by either an FCC ID number or the FCC logo, ( ), your computer is considered tobe a Class B digital device.book.book Page 142 Wednesday, October 26, 2005 1:00 PM