Renkforce MPF337 Operating Instructions Manual page 63

Never use the product immediately after it has been brought from a cold into
a warm room. The accruing condensation may destroy the product.
Please wait until the product has reached room temperature. This may take
several hours.
Ensure that no cables are pinched or caught during operation.
Make sure that the insulation of the whole product is neither damaged nor destroyed. Check
the product for damage prior to each use!
The product must NOT be used if you notice any damages.
Damage to the multimedia player may cause an explosion or the burning of the
built-in storage battery.
In this case take the product to a specialised workshop and discontinue the
use.
During operation place the product in a position to prevent it from falling.
Valuable or scratch sensitive furniture surfaces should be protected from damage with suitable
covers before placing the multimedia player on them.
Protect the device from scratches, dust and dirt during transport.
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