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8 Cisco 7513, Cisco 7513-MX, and Cisco 7576 Card Cage and Backplane Assembly Replacement Instructions
Installation Safety, ESD Precautions, and Tools Required
In addition, use the guidelines that follow when working with any equipment that is connected to
telephone wiring or other network cabling:
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
• Never touch uninsulated telephone wires or terminals unless the telephone line is disconnected
at the network interface.
• Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are
handled improperly, can result in complete or intermittent failures.
Following are guidelines for preventing ESD damage:
• Always use an ESD-preventive wrist strap or ankle strap and ensure that it makes good skin
contact.
• When removing or installing an ESD-sensitive component, connect the equipment end of a
ground strap to an unpainted surface of the chassis, such as the chassis frame.
• If you are returning a replaced part to the factory, immediately place it in a static shielding bag
to avoid ESD damage to the board.
• The wrist strap onlyprotects the board from ESDvoltages on the body;ESD voltages onclothing
can still cause damage.
Warning For safety, periodically check the resistance value of the antistatic strap. The
measurement should be between 1 and 10 megohms.
Tools Required
You need the following tools to install or replace the backplane and card cage assembly:
• 1/4-inch flat-blade screwdriver to loosen the captive screws on the power supplies and card cage
• Number 1 Phillips or 1/4-inch, flat-blade screwdriver to remove any blank processor module
carriers (fillers) and to tighten the captive installation screws that secure the processor module in
its slot
• Spare card cage assembly—includes the card cage with the chassis interface (attached) and dual
arbiter (attached)
• ESD-preventive wrist strap
• Small piece of masking or clear cellophane tape to mark the new EEPROM device
• Antistatic packaging in which the old card cage assembly should be placed