On Using Headphones - Sony VAIO VGC-LS30 Series User Manual

An 8cm disc adapter exclusively designed for your model is provided for use of 8cm discs on your computer.
Be sure to attach the adapter to an 8cm disc before using it on your computer. Not using the supplied adapter or using
a similar kind of the adapter with the disc may cause a disc recognition error or result in a stuck disc, a damaged disc,
or a malfunction of your computer.
Remove the adapter from an 8cm disc when not using the disc. Keeping the adapter attached may deform the disc.
Do not leave the adapter in a place subject to high temperatures to avoid deformation. Use of the deformed adapter
with an 8cm disc may cause a disc recognition error or result in a stuck disc, a damaged disc, or a malfunction of your
computer.
Not all types of the 8cm disc can fit into the adapter.

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