Removing an AC-Input Power Supply

Chapter 7 Maintaining the Cisco Catalyst 5500 Multiswitch Router

Replacing Hardware Components

Follow these steps to remove an AC-input power supply:

Note In systems with redundant power supplies, the faulty supply can be replaced while the system is operating.

Step 1 Turn off the power switch on the power supply you are removing (see Figure 7-7).

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected.

Caution Failure to turn off the power supply could result in equipment damage.

Figure 7-7 AC-Input Power Supply Front Panels

Power connection

AC	FAN	OUTPUT
OK	OK
		FAIL

Metal prongs

Power switch

Captive screw

H11764

Step 2 Disconnect the power cord from the power source.

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 3 Disconnect the power cord from the power supply being removed.

Step 4 Using a flat-blade screwdriver, loosen and remove the captive installation screws (see Figure 7-7).

Caution Use both hands to install and remove power supplies.

Step 5 Grasp the power supply handle with one hand and place your other hand underneath to support the bottom of the supply, as shown in Figure 7-8(Cisco Catalyst 5000 supply shown).

Cisco MGC Software Release 7 Operations, Maintenance, and Troubleshooting Guide

	OL-0542-06	7-9