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Cisco MGC Software Release 7 Operations, Maintenance, and Troubleshooting Guide
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Chapter7 Maintaining the Cisco Catalyst 5500 Multiswitch Router
Replacing Hardware Components
Warning
Keep hands and fingers out of the power supply bays. High voltage is present on the power backplane
when the system is operating.
Figure 7-11 Handling a DC Power Supply
Step 8 If the bay is to remain empty, install a blank power supply filler plate (Cisco part number 700-00177-01)
over the opening and secure it with the mounting screws. This protects the inner chassis from dust and
prevents accidental contact with live voltage at rear of the bay.
Caution Always install a filler plate over an empty power supply bay to protect the inner chassis and connectors
from dust or other contamination and to prevent possible contact with the high current levels of those
connectors when the chassis is powered on.
Step 9 Reinstall the power supply terminal block cover.
Installing a DC-Input Power Supply
Follow these steps to install a DC-input power supply:
Step 1 Verify that power is off to the DC circuit on the power supply you are installing.
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC
circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit
breaker in the OFF position.
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.
Step 2 Connect the switch to the CO ground through the CO ground connector shown in Figure7-10. Remove
the adhesive strip covering the CO ground connector on the switch.
Use the following guidelines when connecting the switch to the CO ground:
•The ground wire lug must be less than or equal to 0.320 in. (8.1 mm) to fit within the ground
connector.
H7805
INPUT
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