Cisco Universal Broadband Router Cisco uBR10012 Manual - Page 12
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Safety Information and Warnings
while the housing is open.
(To see translations of the warnings that appear in this publication, refer to the appendix "Translated
Safety Warnings" in the installation guide that accompanied this device.)
Take care when connecting units to the supply circuit so that wiring is not overloaded.
Warning
(To see translations of the warnings that appear in this publication, refer to the appendix "Translated
Safety Warnings" in the installation guide that accompanied this device.)
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
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Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent failures. The AC PEMs contain a printed
circuit card that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding and connectors
are integral components of the carrier. Although the metal carrier helps to protect the cards from ESD,
use an antistatic strap each time you handle the modules.
Following are guidelines for preventing ESD damage:
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For safety, periodically check the resistance value of the antistatic strap. The measurement should be
Caution
between 1 and 10 megohms.
AC Power Entry Module for the Cisco uBR10012 Universal Broadband Router
12
Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
Disconnect all power and external cables before moving a chassis.
Do not work alone when potentially hazardous conditions exist.
Never assume that power has been disconnected from a circuit; always check.
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.
Before removing a card from the chassis, connect the equipment end of the strap to a bare metal,
unpainted surface on the chassis or rack-mount.
Handle components by the carrier edges only; avoid touching the card components or any connector
pins.
When removing a module, place it on an antistatic surface or in a static-shielding bag. If the module
will be returned to the factory, immediately place it in a static-shielding bag.
Avoid contact between the modules and clothing. The wrist strap protects the card from ESD
voltages on the body only; ESD voltages on clothing can still cause damage.
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