Cisco 8540 User Guide - Page 43

Removing the DC Power Supply

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Chapter 3 Maintaining the Chassis Replacing Power Supplies Removing the DC Power Supply To remove a DC power supply, follow these steps: Step 1 Step 2 Step 3 Verify that the power is off to the DC input line furnishing power to the power supply you are removing. Turn off the power switch on the power supply you are removing. (See Figure 3-3.) Remove the terminal block cover by removing the two screws at the top and bottom of the terminal block. (See Figure 3-3.) Figure 3-3 DC Power Supply 17116 Terminal block cover Power switch o INPUT OK FAN OUTPUT OK FAIL LEDs Captive screw Warning When installing the unit, the ground connection must always be made first and disconnected last. Step 4 Step 5 Step 6 Disconnect the input wires from the terminal block. Loosen the captive screw on the power supply with a screwdriver. Grasp the power supply handle with one hand. Slowly pull the power supply out of the chassis toward you. While holding the power supply handle with one hand, place your other hand underneath to support the bottom of the supply. (See Figure 3-2.) 78-6134-03 Catalyst 8540 Chassis Installation Guide 3-5

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3-5
Catalyst 8540 Chassis Installation Guide
78-6134-03
Chapter 3
Maintaining the Chassis
Replacing Power Supplies
Removing the DC Power Supply
To remove a DC power supply, follow these steps:
Step 1
Verify that the power is off to the DC input line furnishing power to the power
supply you are removing.
Step 2
Turn off the power switch on the power supply you are removing. (See
Figure 3-3.)
Step 3
Remove the terminal block cover by removing the two screws at the top and
bottom of the terminal block. (See Figure 3-3.)
Figure 3-3
DC Power Supply
Warning
When installing the unit, the ground connection must always be
made first and disconnected last.
Step 4
Disconnect the input wires from the terminal block.
Step 5
Loosen the captive screw on the power supply with a screwdriver.
Step 6
Grasp the power supply handle with one hand. Slowly pull the power supply out
of the chassis toward you. While holding the power supply handle with one hand,
place your other hand underneath to support the bottom of the supply. (See
Figure 3-2.)
Terminal
block
cover
Captive screw
o
17116
Power
switch
LEDs
INPUT
OK
FAN
OK
OUTPUT
FAIL