Safety Precautions
EchoLife HG850
Service Manual
6
Huawei Technologies Proprietary
Issue 02 (2007-05-30)
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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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Do not look directly into the optical interface on the device. Otherwise, your eyes
may be injured.
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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.
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Keep the power plug clean and dry. Using a dirty or wet power plug may lead to
electric shock or other perils.
Battery Usage Requirements:
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If a battery cannot be fit in the device, do not press it with force. Otherwise, the
battery may leak or explode.
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If any battery leaks, emits smoke, or gives off abnormal smell, stop using it
immediately.
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