Oldsmobile 1995 88 Owner's Manual page 155

Cassette Tape Player Care
A tape player that is not cleaned regularly is subject to
reduced sound quality, ruined cassettes, or a damaged
mechanism. Tape cassettes that are not properly stored
in their plastic cases away from contaminants, direct
sunlight, and extreme heat may not operate properly and
could cause premature failure of the tape player.
Cassettes are subject to wear and the sound quality may
degrade over time. Always verify that the cassette tape
is in good condition and that the tape player is clean
before obtaining service on your tape player.
Your tape player should be cleaned with every 50 hours
of use to provide the best performance. Your radio may
display Cln to remind you that you have used your tape
player for 50 hours without re-setting the tape clean
time. If you notice a reduction in sound quality,
regardless of when the tape player was last cleaned, try
playing a different cassette tape to see if the tape or the
tape player is at fault. If this other cassette results in no
improvement in sound quality, clean the tape player.
Proper tape player cleaning should be done with a
scrubbing-action, non-abrasive cleaning cassette. This is
a wet-type cleaning system that uses a cleaning cassette
with pads which scrub the tape head as the hubs
of the
cleaner cassette turn. This type of cleaner may display
an error message and eject the cartridge. This is normal
and is the result of an added feature in the tape player
that detects broken tapes. If an error occurs, you will
need to insert the cleaning cassette at least three times
thoroughly clean the tape player.
You may prefer to use a non-scrubbing action wet-type
cleaner. This type of cleaner uses a cassette with a fabric
belt which cleans the tape head. This type of cleaning
cassette will not cause an error, but it may not clean the
tape player as thoroughly as the scrubbing-type cleaner.
Follow the instructions with the cleaning cassette to
properly clean the tape player. Cleaning cassettes are
available in most stores that sell audio products and a
scrubbing action cleaning cassette is available from your
retailer.
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