Activating The Dc Power Supply; Removing And Replacing The Dc Power Supply - Cisco ASR 903 Installing Manual

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Installing the Cisco ASR 903 Router

Activating the DC Power Supply

Perform the following procedure to activate the DC power supply:

Step 1

Remove the tape from the circuit-breaker switch handle, and restore power by moving the circuit-breaker switch handle

to the On (|) position.

Step 2

Verify power supply operation by checking if the power supply front panel LEDs are in the following states:

• INPUT OK LED is green

• OUTPUT FAIL LED is green

If the LEDs indicate a power problem, see Troubleshooting.

If you are installing a redundant DC power supply, ensure that each power supply is connected to a separate power source

in order to prevent power loss in the event of a power failure.

If you are installing a redundant DC power supply, repeat these steps for the second power source.

This section provides information about removing and replacing the DC power supply in the Cisco ASR 903

Router.

The Cisco ASR 903 Router power supplies are hot-swappable. If you have installed redundant power

Note

supply modules, you can replace a single power supply without interrupting power to the router.

To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power

Caution

supply has been removed or replaced.

Follow these steps to remove and replace the DC power supply on the Cisco ASR 903 Router:

Step 1

Verify the circuit breaker connected to the power supply that has to be replaced.

Step 2

Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional precaution,

tape the circuit-breaker switch in the Off position.

Step 3

Slip on the ESD-preventive wrist strap that was included in the accessory kit.

The power supplies are not fed by both power units. Shutting off the incorrect power supply may cause a traffic

Note

outage.

Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide

Removing and Replacing the DC Power Supply

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