Cisco 2851 - Integrated Services Router Установка и модернизация - Страница 10

Просмотреть онлайн или скачать pdf Установка и модернизация для Сетевой маршрутизатор Cisco 2851 - Integrated Services Router. Cisco 2851 - Integrated Services Router 21 страница. Power up and initial configuration procedures
Также для Cisco 2851 - Integrated Services Router: Информационный лист (20 страниц), Руководство пользователя (25 страниц), Краткое руководство по эксплуатации (47 страниц), Конфигурация (10 страниц)

•

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when

electronic printed circuit cards are improperly handled and can result in complete or intermittent

failures. Always follow ESD-prevention procedures when removing and replacing cards. Ensure that the

router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring

that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely

channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the wrist

strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the

metal part of the chassis.

For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and

Caution

10 megohms (Mohms).

Items in the Fan Replacement Kit

The fan replacement kit contains the following items:

•

Installation might require some tools and equipment that are not provided as standard equipment with

the router. The following tools and parts are required for a typical router installation:

•

Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers

If an electrical accident occurs, proceed as follows:

Use caution, and do not become a victim yourself.

–

Turn off power to the system.

–

If possible, send another person to get medical aid. Otherwise, determine the condition of the

–

victim and then call for help.

Fan unit (three fans connected together as one unit)

Additional replacement screws (a few extra screws are provided in case you misplace the original

screws)

Installing and Upgrading Fans in the Cisco 2821 and Cisco 2851 Series Routers document (this

document)

Number 2 Phillips screwdriver

ESD-preventive wrist strap

Antistatic mat

78-18643-02