Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 172

Removing and Replacing the Power Supply
Figure 5-48
Power Supply 2
(redundant)
Power
Supply 1
Tighten the power supply captive installation screws
Step 4
Figure 5-49
Warning Power supply captive installation screws must be tight to ensure protective grounding continuity.
In a system with dual power supplies, connect each power supply to a separate input line. In case of a
Caution
line failure, the second source will most likely still be available.
Verify that all connections to the DC PEM are secure.
Step 5
Remove the tape from the circuit breaker switch handle, and restore power by moving the circuit breaker
Step 6
switch handle to the On (|) position.
Verify power supply operation by checking that the power supply front panel LEDs are in the following
Step 7
states:
INPUT OK LED is green
•
FAN OK LED is green
•
OUTPUT FAIL LED is not lit
•
Cisco 7600 Series Router Installation Guide
5-44
Handling the Power Supply
Power Supply Captive Installation Screws
Status LEDs
Captive installation screws
Chapter 5 Removal and Replacement Procedures
(Figure 5-49).
OL-4503-26