Cisco Systems Cisco 12006, Cisco 12406 - page 265

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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Chapter 6 Maintaining the Router
Removing and Replacing an AC PDU
Caution The system must be powered off to remove and replace the PDU. Notify the
network administrator and other appropriate personnel that all routing traffic
stops while replacements take place.
Step 1 Power off both power supplies by setting the power switches to the Off (0)
position.
Step 2 Unplug the power supply cords from their AC outlets.
Step 3 Power off the circuit breakers assigned to the AC outlets.
Step 4 Loosen the captive screw on each ejector lever and pivot the levers open to unseat
the power supply from its PDU connector (Figure 6-11).
• It is not necessary to remove the power supply from its bay.
• Repeat this step for the second power supply.