Toshiba AT10-A ユーザーズマニュアル

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The number of possible pixel failures of your display is defined
according to ISO 9241-307 standards. If the number of pixel failures is
less than this standard, they will not be counted as defect or failure.
Battery is a consumption product, since the battery time depends on
the usage of your tablet. If the battery can not be charged at all, then it
is a defect or failure. The changes in battery time is not a defect or
failure.
User's Manual
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