Cisco Systems XR 12000 Series Manual De Usuario

The following sections provide information about preparing to install line cards:

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.

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.

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.

Before working with laser optics, read the 

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:

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 Ethernet line cards 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 Ethernet line cards 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.