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

Maintenance Procedures for the Cisco 7507 and Cisco 7507-MX

Step 8 If the power supply bay is to remain empty, install a power-supply filler plate over the opening and secure it with a mounting screw. This protects the inner chassis and the connectors in the rear of the bay from dust and exposed current levels when the chassis is powered on.

Note If you plan to replace an AC-input power supply, install it using the procedure in the “Cisco 7507 and Cisco 7507-MX Installation Considerations” section on page 3-14.

If you plan to replace a DC-input power supply, install it using the procedure in the “Installing Cisco 7507 and Cisco 7507-MX Power Supplies” section on page 3-14. Rewire it using the procedure in the “Connecting Power to the Cisco 7505 DC-Input Power Supply” section on page 3-9.

This completes the power supply removal procedure.

Removing and Replacing the Cisco 7507 and Cisco 7507-MX Front Chassis Panels

This section provides the procedures for removing and replacing the chassis top front panel and bottom front panel so you can access internal chassis components or replace panels that have been damaged.

The bottom front chassis panel is vented and works with the chassis blower to draw cooling air into the chassis. If the bottom panel is not installed correctly, or if it is cracked or broken, the flow of cooling air can be redirected and might cause overheating inside the chassis. Replace panels if they are cracked or broken, or if damage prevents them from fitting on the chassis properly.

Always shut down the system before removing the chassis top front panel. With the top front panel removed, 100A of current is exposed on the front of the backplane and around the power supply wiring harnesses.

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.

Note You must remove the bottom front panel before you can remove the top front panel. The EMI shielding around the outer edge of the top front panel acts as a spring and compresses when you push the panel into the chassis to keep the panel fitted tightly into the chassis opening.

Use the following procedure to remove the front panels:

Step 1 Grasp the bottom edge of the bottom chassis panel and pull the panel out about 1 inch (2.54 cm). Place your fingers behind the sides of the panel and pull it off the chassis.

Cisco 7500 Series Installation and Configuration Guide

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Cisco Systems manual Cisco 7500 Series Installation and Configuration Guide