Removing And Replacing A Dc Power Supply - Cisco ASR 902U Hardware Installation Manual

Removing and Replacing a DC Power Supply

Removing and Replacing a DC Power Supply
This section provides information about removing and replacing a DC power supply in the Cisco ASR 902
Router.
Note The Cisco ASR 902 Router power supplies are hot-swappable. If you have installed redundant power
supplies, 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 DC power supply on the Cisco ASR 902 Router:
Step 1 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 2
Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 3 Switch the power supply circuit-breaker switch to the Off (O) position.
Step 4 Pull the terminal block plug connector out of the terminal block head in the power supply.
Step 5 Loosen the captive screws on the DC power supply.
Step 6
Grasping the power supply handle with one hand, pull the power supply out from the chassis while supporting it with
the other hand.
Step 7 Replace the DC power supply within 5 minutes. If the power supply bay is to remain empty, install a blank filler plate
(Cisco part number A900-PWR-BLANK) over the opening, and secure it with captive installation screws.
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
90
Installing the Cisco ASR 902 Router