Cisco CATALYST 4500 7 SLOT CHASSIS FAN NO POWER SUPPLY REDUNDANT SUPCAPABLE Техническое Руководство

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Catalyst 4500 Series Switches Installation Guide
78-14409-08
Chapter 4      Removing and Replacing FRUs
Removing and Replacing the Power Supply
Removing a DC-Input Power Supply
This section describes how to remove a DC-input power supply.
Required Tools
You will need the following tools to perform this procedure:
A Phillips screwdriver 
A 10-mm wrench/socket
Removal Procedure
Warning
Before performing any of the following procedures, ensure that power is 
removed from the DC circuit. 
Statement 1003
Follow these steps to remove a DC-input power supply:
Step 1
Turn off the in-line power switch. (Single input only. The triple-input power 
supply does not have this switch.) 
Step 2
Turn off the main power switch.
Step 3
Verify that power is off to the DC circuit on the power supply you are removing.
Step 4
Loosen the screw on the terminal block cover and remove it from the terminal 
block (see 
). The triple-input power supply has two 
screws on the cover.