Yealink CP920 User Manual page 168

User Guide for the CP920 HD IP Conference Phone
Environmental Requirements
Place the device at a well-ventilated place. Do not expose the device under 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 heavy objects on the device in case of damageand deformation
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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 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 the accessories provided or authorized by the manufacturer.
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The power supply of the device must meet the requirements of the input voltage of

the device. Please use the provided surge protection power socket only.
Before plugging or unplugging any cable, make sure that your hands are
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completely 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 there is smoke emitted from the device, or some abnormal noise or smell,
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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 have disconnected all other cables.
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