Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 156

Removing and Replacing the Power Supply
Figure 5-31
If the power supply bay is to remain empty, install a blank power supply filler plate (Cisco part number
Step 7
700-03104-01) over the opening, and secure it with the captive installation screws.
Removing a PWR-4000-DC Power Supply from a Cisco 7609 Router or a Cisco 7609-S Router
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Voltage is present on the backplane when the system is operating. To reduce risk of an electric shock,
Warning
keep hands and fingers out of the power supply bays and backplane areas.
Follow these steps to remove a DC-input power supply:
Step 1 Verify that power is off to the DC circuit connected to the DC-input power supply you are removing.
Step 2 Turn the power switch to the Off (0) position on the power supply you are removing
Turning the power switch off also disengages a pawl that unlocks the power supply from the chassis.
Cisco 7600 Series Router Installation Guide
5-28
Handling a DC-Input Power Supply
I
0
INPU T
FAN OUT PUT
OK
OK
FAIL
Chapter 5 Removal and Replacement Procedures
(Figure 5-32).
OL-4503-26