AGPtek K1 Bedienungsanleitung Seite 10

it.
Change the USB cable.
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Disconnect the player, restart the computer, and then reconnect
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the player.
Connect your player to another USB port on your computer.
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If the player has not been used for a long period of time, charge
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the player for about 10 minutes, after which it should start
operating normally again.
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