Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 167

Chapter 5 Removal and Replacement Procedures
Verify that power is off to the DC circuit connected to the DC-input power supply you are removing.
Step 1
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.
Figure 5-43
7
9
1
Terminal block cover
2
DC power cable terminal block
3 Ground
4 Status LEDs
5
Power switch
With the PWR-6000-DC power supply, you have the option of removing the Input Power Module (IPM)
Note
without disconnecting the DC-input wires and the ground wires. You can then replace your power supply
and insert the fully-wired IPM. To use this option, do not perform steps 3 through 6 and go to step 7.
Step 3 Remove the two A4 screws securing the terminal block cover, and remove the cover from the power
supply
OL-4503-26
DC-Input Front Panel for 6000-W DC-Input Power Supply
1
2
CI SC O SY
ST EM S, IN
C
1
5
6
(Figure 5-43).
3
8
9
2
3
IN PU T
4
OK
FA N
OU TP UT
OK
FA IL
4
6
Captive installation screw
7
Input Power Module (IPM)
8 IPM captive screws
9 IPM latches
Cisco 7600 Series Router Installation Guide
Removing and Replacing the Power Supply
(Figure 5-43).
5-39