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Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
Chapter 5 Replacing Cisco ASR 9000 Series Router Components
Removing and Replacing Power System Components
Step 4 Verify that the (green) Power Input indicator on the front of the power module goes on. If the indicator
does not light, see Troubleshooting the Power Subsystem, page 4-7.
Disconnecting AC Power
Follow these steps to disconnect an individual AC power cord:
Step 1 Power OFF (0) the circuit breaker assigned to the AC power source you are disconnecting.
Step 2 Loosen the retainer bracket holding the AC power cord to the power tray receptacle.
Step 3 Unplug the AC power cord from the power tray receptacle.
Caution Do not turn off the switch on the power tray to remove AC power cords. An individual AC power cord
can be unplugged while the system is powered from other AC power sources.
If it becomes necessary to disconnect all AC power from the router, follow these steps:
Caution Do not disconnect all power from the router to replace components, including power modules. See
Removing and Replacing Power System Components, page 5-12.
Step 1 Set the power switch at the rear of the Version 1 AC power tray to the OFF (0) position. For Version 2
and Version 3 AC power trays, set the power switch at the front of the to the OFF (0) position.
Step 2 Power OFF (0) the circuit breakers assigned to the AC power sources you are disconnecting.
Caution To ensure that power remains off while you are performing this procedure, lock-out/tag-out the circuit
breaker switch in the OFF (0) position until you are ready to turn it on.
Step 3 Loosen the retainer bracket holding the AC power cords to the power tray receptacle.
Step 4 Unplug the AC power cords from the power tray receptacles.
Reconnecting AC Power
Follow these steps to reconnect an individual AC power cord to a power tray:
Step 1 Power OFF (0) the circuit breaker assigned to the AC power source you are reconnecting.
Step 2 Plug the AC power cord into the power tray receptacle.
Step 3 Close and tighten the retainer bracket holding the AC power cord to the power tray receptacle.
Step 4 Power on the AC power source circuit breaker.