Yealink CPW90 Handbuch Seite 11

• The power supply of the device shall 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 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.
• 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, 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 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.
• Use a piece of soft, dry and anti-static cloth to clean the device.
• Keep the power plug clean and dry. Using a dirty or wet power plug
may lead to electric shock or other perils.
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