Cisco Systems ASR 903 manual Removing and Replacing the AC Power Supply

Chapter 3 Installing the Cisco ASR 903 Router

Installing the Power Supply

•OUTPUT FAIL LED is green

Step 4 If the LEDs indicate a power problem, see the Chapter 5, “Troubleshooting”for troubleshooting information.

Step 5 If you are installing a redundant power supply, repeat these steps for the second power source.

Note If you are installing a redundant AC 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.

Removing and Replacing the AC Power Supply

			This section describes how to remove and replace the AC power supply.
		Note	The Cisco ASR 903 Router power supplies are hot-swappable. If you have installed redundant power
			supply modules, you can replace a single power supply without interrupting power to the router.
	Caution		To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power
			supply has been removed or replaced.
Warning			When you install the unit, the ground connection must always be made first and disconnected last.
			Statement 1046
Warning			Before performing any of the following procedures, ensure that power is removed from the DC circuit.
			Statement 1003
Warning			Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
			Statement 1030
Warning			Installation of the equipment must comply with local and national electrical codes. Statement 1074
			Follow these steps to remove and replace the AC power supply:
		Step 1	Disconnect the power cord from the power source. Do not touch the metal prongs on the power cord
			when it is still connected to the power supply.
		Step 2	Remove the power cord from the power connection on the power supply. Do not touch the metal prongs
			embedded in the power supply.
		Step 3	Loosen the captive installation screws.
		Step 4	Grasp the AC power supply with one hand, and slide it part of the way out of the chassis. Place your
			other hand underneath the power supply, and slide it completely out of the chassis.
			Cisco ASR 903 Router Hardware Installation Guide
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