4-31
Catalyst 6500 Series Switches Installation Guide
OL-5781-04
Chapter 4 Removal and Replacement Procedures
Removing and Installing the DC-Input Power Supplies
Removing and Installing a 4000 W DC-Input Power Supply
This section covers the power supply removal and installation procedures for the 4000 W DC-input
power supply and is divided into the following topics:
• Required Tools, page 4-31
• Removing a 4000 W DC-Input Power Supply, page 4-31
• Installing a 4000 W DC-Input Power Supply, page 4-35
Required Tools
Use a flat-blade or number 2 Phillips-head screwdriver to perform these procedures. Additionally, wire
cutters may be necessary to cut cable tie-wraps.
Removing a 4000 W DC-Input Power Supply
Warning
When installing the unit, always make the ground connection first and disconnect it last.
Statement 42
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
Follow these steps to remove a 4000 W DC-input power supply:
Step 1 Verify that power is off to the DC circuit connected to the DC-input power supply that you are removing.
As an added precaution, place the appropriate safety flag and lockout devices at the source 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.
Step 2 Turn the power switch to the Off (0) position on the power supply that you are removing. (See
Figure 4-24.) Turning off the power switch also disengages a pawl that unlocks the power supply from
the chassis.
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