Cisco Systems 7500 Series Manual De Usuario

6-12

Cisco 7500 Series Installation and Configuration Guide

OL-5008-03 B0

Chapter 6 Maintaining Your Cisco 7507 and Cisco 7507-MX Router

Maintenance Procedures for the Cisco 7507 and Cisco 7507-MX

Warning

Before working on a chassis or working near power supplies, unplug the power cord on AC units;
disconnect the power at the circuit breaker on DC units.

Removing and Replacing the Chassis Interface in the Cisco 7507 and Cisco 7507-MX

The chassis interface (CI) (shown in

Figure 6-9

) provides environmental monitoring and logic functions

for the Cisco 7507 and Cisco 7507-MX. The CI is a printed circuit board mounted to the noninterface
processor side (rear) of the backplane. The CI plugs directly into the backplane through the edge
connector on the CI and a connector on the rear of the backplane. The chassis interface ships as a spare
part as Product Number MAS-7500CI=. Replace the CI only if it fails.

Figure 6-9

7500 Series Chassis Interface

Use the following procedure to remove the CI:

Step 1

Turn off the system power switch and disconnect the power cable from the power source.

Step 2

Attach an ESD-preventive strap (your own or the one supplied with the FRU) between you and an
unpainted chassis surface.

Step 3

Remove the front panels. (See Step 1 through Step 6 in the procedure for removing front cover panels in
the

“Removing and Replacing the Cisco 7507 and Cisco 7507-MX Front Chassis Panels” section on

page 6-6

Step 4

Locate the CI board on the rear of the backplane. (See

Figure 6-8

Step 5

Carefully remove the CI from its backplane connector.

Note

If necessary, gently rock the CI from side to side very slightly to dislodge the pins from the backplane
connector.

Step 6

Place the CI in an antistatic bag.

This completes the CI removal procedure.

H2877

Chassis interface

Standoff
screw holes