Cisco Cisco uBR-MC3Gx60V-RPHY Broadband Processing Engine Installation Guide

IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you 
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar 
with standard practices for preventing accidents. Use the statement number provided at the end of 
each warning to locate its translation in the translated safety warnings that accompanied this device. 
Statement 1071
SAVE THESE INSTRUCTIONS

Follow these basic guidelines when working with any electrical equipment: 

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. 

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are 
improperly handled, can result in complete or intermittent failures. The AC-input power shelf and its AC 
power modules 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 anti-static strap each time you handle the modules. 

Following are guidelines for preventing ESD damage:

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. Make sure that the chassis and/or rack has a 
grounding cable installed. (For more information, see the 

Cisco uBR10012 Universal Broadband 

.)

Handle components by the carrier edges only; avoid touching the card components or any connector 
pins.

When removing a module, place it on an anti-static 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.

For safety, periodically check the resistance value of the anti-static strap. The measurement should be 
between 1 and 10 megohms.