Cisco Systems 4500 manual Removing and Replacing the Power Supply

Chapter 4 Removing and Replacing FRUs

Removing and Replacing the Power Supply

This chapter tells you how to remove and replace Catalyst 4500 series field-replaceable units (FRUs). The information is presented in these sections:

•Removing and Replacing the Power Supply, page 4-2

•Removing and Replacing the Chassis Fan Assembly, page 4-18

•Replacing Backplane Modules on a Catalyst 4507R or 4510R Switch, page 4-24

For instructions on installing and replacing supervisor engine and switching modules, refer to the Catalyst 4500 Series Module Installation Guide.

Removing and Replacing the Power Supply

This section describes how to remove and install the AC-input power supply and DC-input power supply for the Catalyst 4500 series switches. This information is presented in the following sections:

•Required Tools, page 4-5

•Removing an AC-Input Power Supply, page 4-5

•Installing an AC-Input Power Supply, page 4-8

•Removing a DC-Input Power Supply, page 4-11

•Installing a DC-Input Power Supply, page 4-16

Warning Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034

Figure 4-1and Figure 4-2show the AC-input power supplies. Figure 4-3and Figure 4-4show a the DC-input power supplies. Locate your power supply and notice the location of the captive installation screws.

Note The power supplies are hot-swappable, so in redundant mode you will not need to power down the switch to replace or upgrade most power supplies. In combined mode some slots may lose power during an upgrade or power supply replacement.

	Catalyst 4500 Series Switches Installation Guide
4-2	78-14409-08