Yealink VC400 User Manual page 162

User Guide for the VC400 Video Conferencing System
Environmental Requirements
Place the device in a well-ventilated place. Do not expose the device to direct

sunlight.
Keep the device dry and free of dust.
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Place the device on a stable and level platform.
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Please do not place any heavy objects on the device in case of damageand and

deformation caused by the heavy load.
Keep at least 10 cm between the device and the closest object for heat dissipation.
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Do not place the device on or near any inflammable or fire-vulnerable object, such

as rubber-made materials.
Keep the device away from any heat source or bare fire, such as a candle or an

electric heater.
Keep the device away from any household appliance with a strong magnetic field or
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electromagnetic field, such as a microwave oven or a refrigerator.
Operating Requirements
Do not let a child operate the device without guidance.
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Do not let a child play with the device or any accessory in case of accidental

swallowing.
Please only use 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. Please only use the surge protection power socket provided.
Before plugging or unplugging any cable, ensure that your hands are completely
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dry.
Do not spill liquid of any kind on the product or use the equipment near water, for

example, near a bathtub, washbowl, kitchen sink, wet basement or near a swimming
pool.
Do not tread on, pull, or over-bend any cable in case of malfunction of the device.
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During a thunderstorm, stop using the device and disconnect it from the power

supply. Unplug the power plug and the Asymmetric Digital Subscriber Line (ADSL)
twisted pair (the radio frequency cable) to avoid lightning strike.
If the device is left unused for a rather long time, disconnect it from the power

supply and unplug the power plug.
When smoke or an abnormal noise or smell is emitted from the device, disconnect

the device from the power supply, and unplug the power plug immediately. Contact
the specified maintenance center for repair.
Do not insert any object into equipment slots that is not part of the product or

auxiliary product.
Before connecting a cable, connect the grounding cable of the device first. Do not
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disconnect the grounding cable until you disconnect all other cables.
Cleaning Requirements
Before cleaning the device, stop using it and disconnect it from the power supply.
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Use a piece of soft, dry and anti-static cloth to clean the device.
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