Yamaha CD-C600BL Owner's Manual page 16

PLAYABLE DISC AND FILE FORMAT
■ Handling compact discs
• Always handle with care so that the playing surface is
not scratched. Do not warp discs.
• To keep clean the playing surface, wipe with a clean,
dry cloth. Do not use any type of disc cleaner, spray, or
any other chemical-based liquid.
• Do not wipe with a circular motion; wipe straight
outward from the center.
• Use a soft-tipped pen when writing on the label side of
the disc.
• When a disc is not being used, remove it from this unit
and store in an appropriate case.
• Do not expose discs to direct sunlight, high
temperature or high humidity for a long time.
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