Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 141

Chapter 5 Removal and Replacement Procedures
Figure 5-13
Power Supply 2
Supply 1
If the power supply bay is to remain empty, install a blank power supply filler plate (Cisco part number
Step 4
800-28728-01 for the Cisco 7603-S router) over the opening and secure it with the captive installation
screws.
Removing PWR-2700-DC/4 Power Supply from a Cisco 7604 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:
Verify that power is off to the DC circuit connected to the DC-input power supply you are removing.
Step 1
Remove the four screws securing the terminal block cover, and slide the cover off the terminal block
Step 2
(Figure
OL-4503-26
Cisco 7603-S Router—Handling an DC-Input Power Supply
(redundant)
Power
5-14).
Removing and Replacing the Power Supply
Cisco 7600 Series Router Installation Guide
5-13