Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 173

Chapter 5 Removal and Replacement Procedures
If the LEDs indicate a power problem, see the
Installing a PWR-1500-DC Power Supply in a Cisco 7603-S Router
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Follow these steps to install a DC-input power supply:
Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation
instructions, see the
Verify that power is off to the DC circuit connected to the DC PEM for the power supply you are
Step 2
installing.
Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as
Step 3
shown in
supply is fully seated in the bay.
Figure 5-50
Power Supply 2
(redundant)
Power
Supply 1
Tighten the power supply captive installation screws
Step 4
OL-4503-26
"System Ground Connection" section on page
Figure 5-50. Slide the power supply into the power supply bay. Make sure that the power
Handling the Power Supply
Removing and Replacing the Power Supply
"Identifying Startup Problems" section on page
3-19.
(Figure 5-51).
Cisco 7600 Series Router Installation Guide
4-2.
5-45