Safety Guidelines; Preventing Electrostatic Discharge - Cisco PRP-2 Installation And Configuration Manual

Preparing for Installation

Safety Guidelines

Before you perform any procedure in this publication, review the safety guidelines in this section to
avoid injuring yourself or damaging the equipment.
The following guidelines are for your safety and to protect equipment. The guidelines do not include all
hazards. Be alert.
Note Review the safety warnings listed in the Regulatory Compliance and Safety Information for
Cisco 12000 Series Internet Router publication (Document Number 78-4347-xx) that accompanied your
router before installing, configuring, or maintaining a line card.
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Preventing Electrostatic Discharge

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Electromagnetic interference (EMI)
shielding is an integral component of the line card. We recommend using an ESD-preventive strap
whenever you are handling network equipment or one of its components.
The following are guidelines for preventing ESD damage:
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Warning For safety, periodically check the resistance value of the ESD strap. The measurement should be
between 1 and 10 megohms.
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Keep the work area clear and dust free during and after installation. Do not allow dirt or debris to
enter into any laser-based components.
Do not wear loose clothing, jewelry, or other items that could get caught in the router while working
with line cards.
Cisco equipment operates safely when it is used in accordance with its specifications and product
usage instructions.
If you plan to replace a PRP, back up your current configuration file to a remote server or to Flash
memory before you remove the PRP. This prevents you from having to reenter all your current
configuration information manually. To back up the file, copy your configuration file to a Flash disk
or access a remote server.
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.
Connect the equipment end of the connection cord to an ESD connection socket on the router or to
bare metal on the chassis.
Handle PRPs by the captive installation screws, the provided handle, ejector levers, or the line card
metal carrier only; avoid touching the board or connector pins.
Place removed PRPs board-side-up on an antistatic surface or in a static shielding bag. If you plan
to return the component to the factory, immediately place it in a static shielding bag.
Avoid contact between the PRPs and clothing. The wrist strap protects the board from ESD voltages
on the body only; ESD voltages on clothing can still cause damage.
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