Lenovo Ultra Slim DB66, Руководство пользователя

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Media storage method
▶ Temperature: 25 °C, Humidity: 50% (on the basis of the disc specifications ISO10995)
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Avoid radical changes of temperature or humidity.
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Avoid exposure to light for a long time (especially sunlight or ultraviolet)
▶ Use a dry-type pen for labeling.
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Do not attach a sticker label.
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Put the disc in a protective case and store it upright. Avoid storing it horizontally for a long
time.
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Do not bend the disc.
▶ Protect the writing surface. Do not touch or mark the surface.
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Check the writing surface of the disc before recording and if there are any impurities, wipe
them away starting from the inside (but not along the circle).
▶ When holding the disc, hold it by at the outer edge or on the hole at the center.
Caution
The preservation period may differ depending on the storage conditions.
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