Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 265

Chapter 4 Removal and Replacement Procedures
Required Tools
The following tools are required for the power supply removal and installation procedures:
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•
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Additional tools might be necessary to install the lugs on the source DC and the ground cables.
Additionally, the lugs for the source DC cables and the ground cable are not provided; you must obtain
them on your own.
Removing a 6000 W DC-Input Power Supply
Warning Before performing any of the following procedures, ensure that power is removed from the DC
circuits. To ensure that all power is removed, locate the circuit breakers or fuses on the DC power
lines that service the DC circuits. Turn OFF the DC power line circuit breakers and remove the DC
power line fuses. Statement 322
Warning Voltage is present on the backplane when the system is operating. To reduce risk of an electric shock,
keep hands and fingers out of the power supply bays and backplane areas. Statement 166
Note With the 6000 W DC-input power supply, you have the option of removing the Input Power Module
(IPM) without disconnecting the DC-input wires and the ground wires. You can then replace your power
supply and insert the fully-wired IPM. Read through this procedure carefully before removing your
power supply.
To remove a DC-input power supply, follow these steps:
Step 1 Verify that power is off to the DC circuit connected to the DC-input power supply you are removing. As
an added precaution, place the appropriate safety flag and lockout devices at the source DC power circuit
breaker, or place a piece of adhesive tape over the circuit breaker handle to prevent accidental power
restoration while you are working on the circuit.
Turn the power switch to the Off (0) position on the power supply you are removing
Step 2
Turning the power switch off also disengages a pawl that unlocks the power supply from the chassis.
OL-5781-08
Number 2 Phillips-head screwdriver
1/4-inch open-ended wrench or 1/4-inch nutdriver
Wire cutters to cut the cable tie-wraps
Removing and Installing the DC-Input Power Supplies
Catalyst 6500 Series Switches Installation Guide
(Figure 4-41).
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