Buick 1993 Roadmaster Owner's Manual page 151

cassette has no improvement
in
s.ound quality, clean the
tape player.
Clean your tape player with a wiping-action,
non-abrasive cleaning cassette, and follow the directions
provided with it.
Cassettes are subject to wear and the sound quality may
degrade over time. Always make sure that the cassette
tape is in good condition before you have your tape
player serviced.
Care of Your Compact Discs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust. If the surface of a disc is soiled, dampen a
clean, soft cloth in a mild, neutral detergent solution and
clean it, wiping from the center to the edge.
Be sure never to touch the signal surface when handlin
discs. Pick up discs by grasping the outer edges ,or .the
edge'of the hole and the outer edge.
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Fixed Mast Antenna
The fixed mast antenna can withstand most car washe
without being damaged. If the mast should ever becom
slightly bent, you can straighten it out by hand. If the
mast is badly bent, as it might be by vandals, you should
replace
it.
Check every once in a while to be sure the mast is still
tightened to the fender.
Power Antenna Mast Care
Your power antenna will look its best and work well if
it's cleaned from time to time.
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