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:
Procedure
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.
Do not turn off the switch on the power tray to reconnect AC power cords. An individual AC power
cord can be plugged in while the system is powered from other AC power sources.
Caution
Reconnecting AC Power
If power has been totally disconnected from the router, follow these steps to reconnect AC power to the AC
power tray:
Procedure
Step 1 Verify that the power switch at the rear of the Version 1 AC power tray is set to the OFF (0) position. For
Version 2 and Version 3 AC power trays, verify that the power switch at the front of the power tray set to the
OFF (0) position.
Step 2 Check that the circuit breaker assigned to the AC power source you are connecting is set to OFF (0).
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.
Caution
Step 3 Plug the AC power cords into the power tray receptacle (Figure 1).
Step 4 Close the retainer bracket to secure the AC power cord plug to the power tray receptacle.
Step 5 Power on the AC power source circuit breaker.
Step 6 Set the power switch at the rear of the AC power tray to the ON (1) position.
The following procedure is only to be used when reconnecting power to all power trays in a system
that has been powered down completely.
Caution
Replacing Cisco ASR 9000 Series Router Components
18
Replacing Cisco ASR 9000 Series Router Components
Reconnecting AC Power
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