Procedure
Step 1 Slide the power module into the bay until it mates with its backplane connector.
Step 2 Move the handle up.
Step 3 Tighten the screw that secures the power module using a 7/16 hex socket and torque wrench with the torque
set to 50 in-lb.
To prevent damage to the power tray backplane connector, do not use excessive force when inserting
the power module into the power tray.
Caution
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.
Disconnecting AC Power
Follow these steps to disconnect an individual AC power cord:
Procedure
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.
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.
Caution
Disconnecting AC Power
If it becomes necessary to disconnect all AC power from the router, follow these steps:
Procedure
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.
Do not disconnect all power from the router to replace components, including power modules. See
Removing and Replacing Power System Components, on page 12.
Caution
Step 2 Power OFF (0) the circuit breakers assigned to the AC power sources you are disconnecting.
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
Replacing Cisco ASR 9000 Series Router Components
17
Replacing Cisco ASR 9000 Series Router Components
Disconnecting AC Power
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