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SmartNode 4520 & 4110 Series User Manual About this guide
Preventing electrostatic discharge damage
When starting to install interface cards place the interface card on its shielded plastic bag if you lay it on your bench.
For units with an external power adapter, the adapter shall be a listed Lim-
ited Power Source.
Hazardous network voltages are present in WAN ports regardless of whether
power to the SmartNode is ON or OFF. To avoid electric shock, use caution
when near WAN ports. When detaching the cables, detach the end away from
the SmartNode first.
Before opening the chassis, disconnect the telephone network cables to avoid
contact with telephone line voltages. When detaching the cables, detach the
end away from the SmartNode first.
Do not work on the system or connect or disconnect cables during periods of
lightning activity.
In accordance with the requirements of council directive 2002/
96/EC on Waste of Electrical and Electronic Equipment (WEEE),
ensure that at end-of-life you separate this product from other
waste and scrap and deliver to the WEEE collection system in
your country for recycling.
Electrostatic Discharge (ESD) can damage equipment and impair
electrical circuitry. It occurs when electronic printed circuit cards
are improperly handled and can result in complete or intermit
-
tent failures. Do the following to prevent ESD:
•
Always follow ESD prevention procedures when removing
and replacing cards.
•
Wear an ESD-preventive wrist strap, ensuring that it makes
good skin contact. Connect the clip to an unpainted surface
of the chassis frame to safely channel unwanted ESD voltages
to ground.
•
To properly guard against ESD damage and shocks, the wrist
strap and cord must operate effectively. If no wrist strap is
available, ground yourself by touching the metal part of the
chassis.
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WARNING
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CAUTION