Removing And Replacing The Cisco 7507 And Cisco 7507-Mx Front Chassis Panels - Cisco 7500 Series Configuration Manual

Maintenance Procedures for the Cisco 7507 and Cisco 7507-MX
If the power supply bay is to remain empty, install a power-supply filler plate over the opening and secure
Step 8
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.
If you plan to replace an AC-input power supply, install it using the procedure in the
Note
Cisco 7507-MX Installation Considerations" section on page
If you plan to replace a DC-input power supply, install it using the procedure in the
7507 and Cisco 7507-MX Power Supplies" section on page
"Connecting Power to the Cisco 7505 DC-Input Power Supply" section on page
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.
Before working on a chassis or working near power supplies, unplug the power cord on AC units;
Warning
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
6-6
Chapter 6 Maintaining Your Cisco 7507 and Cisco 7507-MX Router
3-14.
3-14. Rewire it using the procedure in the
"Cisco 7507 and
"Installing Cisco
3-9.
OL-5008-03 B0