Sony PCV-RX640 - Manual (Page 63)

Cleaning CD or DVD media
 Fingerprints and dust on the surface of a disc may cause read errors. Proper care of the disc is essential to maintain
its reliability. Do not use solvents such as benzine, thinner, commercially available cleaners or anti-static spray, as
they may cause damage to the disc.
 For normal cleaning, hold the disc by its edge and use a soft cloth to wipe the surface from the center out.
 If the disc is badly soiled, moisten a soft cloth with water, wring it out well, and use it to wipe the surface of the disc
from the center out. Wipe off any remaining moisture with a dry soft cloth.
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