Cisco 7000 Manual - Halaman 5

Jelajahi secara online atau unduh pdf Manual untuk Beralih Cisco 7000. Cisco 7000 13 halaman. Front chassis panel and led board and replacement

Prerequisites

Safety Guidelines

Cisco 7000 Front Chassis Panel and LED Board and Replacement 5

LED board

LEDs

Figure 4

LED Board

Before you begin an installation, review the safety guidelines in this section to avoid

injuring yourself or damaging the equipment.

The following guidelines will help to ensure your safety and protect the equipment. This

list is not inclusive of all potentially hazardous situations, so be alert.

Always turn all power supplies OFF and disconnect power cords before removing

the top front chassis panel. Dangerous current levels are present on the backplane

when power is on.

Do not work alone when potentially hazardous conditions exist.

Carefully examine your work area for possible hazards such as moist ﬂoors,

ungrounded power extension cables, and missing safety grounds.

Before beginning any procedures requiring access to the chassis interior, locate the

emergency power-off switch for the room in which you are working.

Never assume that power has been disconnected from a circuit; always check.

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 lightening 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 has

been disconnected at the network interface.

Use caution when installing or modifying telephone lines.

LED board

spring

Board locking

Backplane connector

LED board

brackets