Huawei EchoLife HG520s, Руководство пользователя

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Operating Requirements:
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Do no let a child operate the device without guidance.
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Do not let a child play with the device or any accessory. Swallowing
the accessories may lead to peril.
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Use the accessories provided or authorized by the manufacturer
only.
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The power supply of the device shall meet the requirements of the
input voltage of the device.
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Before plugging or unplugging any cable, shut down the device and
disconnect it from the power supply.
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While plugging or unplugging any cable, make sure that your hands
are completely dry.
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Do not tread on, pull or over-bend any cable. Otherwise, the cable
may be damaged, leading to malfunction of the device.
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Do not use an old or a damaged power cable.
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During lightning weather, stop using the device and disconnect it
from the power supply. Unplug the power plug and the ADSL twisted
pair, to avoid lightning strike.
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If the device is not used for a long time, disconnect it from the power
supply and unplug the power plug.
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In any of the following cases, stop using the device, disconnect it
from the power supply and unplug the power plug immediately:
there is smoke emitted from the device, or there is some abnormal
noise or smell. Contact the specified maintenance center for repair.
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Avoid any object (such as metal shavings) from entering the device
from the heat dissipation intakes.
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Do not scratch or abrade the shell of the device. This may lead to
malfunctions of the device. The shed painting material may also
lead to skin allergy.
Cleaning Requirements:
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Before cleaning the device, stop using it and disconnect it from the
power supply.
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Use a piece of soft cloth to clean the device.