On Handling Discs; On Using Headphones - Sony Vaio VGC-RC300 Series User Manual

On Handling Discs

Do not touch the surface of the disc.
Do not drop or bend the disc.
Fingerprints and dust on the surface of a disc may cause read errors. Always hold the disc by its edges and central hole,
as shown below:
Proper care of the disc is essential to its continuous reliability. Do not use solvents (such as benzine, thinner, alcohol,
commercially available cleaners, or anti-static spray) which 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.
Never affix an adhesive label on discs. This will affect the use of the disc irreparably.

On Using Headphones

Preventing hearing damage – Avoid using headphones at high volume. Hearing experts advise against continuous, loud
and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use.
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Precautions