Kenwood KDC-4009 Instruction Manual page 29

as
Disc Changer
Bele el C-tyaleloy diate MCIite (1
SOLUTION
Clean the CD.
play, but another one plays
instead.
The CD is upside-down.
Load the CD with the labeled side up.
The disc is severely scratched.
Try another disc instead.
Remove whatever is touching it.
The CO is scratched or dirty.