Buick 2000 Park Avenue Owner's Manual page 184

CLN: If this message appears on the display, the
cassette tape player needs to be cleaned. It will still play
tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See "Care of
Your Cassette Tape Player" in the Index. After you clean
the player, press and hold EJECT for five seconds to
reset the CLN indicator. The radio will display
show the indicator was reset.
Your cassette tape player automatically reduces
background noise from tapes encoded with Dolby NR.
You may turn Dolby NR off by pressing the number
six preset.
Playing a Compact Disc
Insert a disc partway into the slot, label side up. The
player will pull it in. The disc should begin playing.
If you want to insert a CD while the ignition or the radio
is off, first press EJECT or RECALL.
If you're driving on a very rough road or if it's very hot,
the disc may not play and an error code may appear on
the display. When the road becomes smooth or the
temperature returns to normal, the disc should play.
If the disc comes out, it could be that:
D
E20: The disc is upside down.
---
to
D
E20: It is dirty, scratched or wet.
D
E20: There's too much moisture in the air.
(Wait about an hour and try again.)
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer. If your radio
displays an error number, write it down and provide it to
your dealer when reporting the problem.
PREV (1): Press this button to go to the start of the
current track, if more than eight seconds have played.
If you hold the button or press it more than once, the
player will continue moving back through the disc.
The sound will mute while seeking.
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