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Chapter 1
Cisco uBR7225VXR Overview
Power Supplies
The Cisco uBR7225VXR router is equipped with the 300W AC-input power supply and the maximum
AC-input power with single or dual power supply configuration is 300W.
The power supply contains a main power switch, Input OK and Output OK LEDs, AC-input power
receptacle, and a two-hole grounding lug for the AC-input power supply. The grounding lug at the
rear-bottom portion of the chassis provides a ground connection for electrostatic discharge (ESD)
equipment.
The Cisco uBR7225VXR router supports an optional, second power supply for load-sharing and power
redundancy. If you purchased a Cisco uBR7225VXR router and you want to install a second power
supply, you must order the second power supply separately.
A handle on the AC-input power supply unit provides a grip point for removing and replacing the power
supply.
A single captive installation screw secures the power supply to the chassis and seats the power supply in
the router midplane. The AC-input power supply has a receptacle for an AC-input power cable. A
modular power cable connects the AC-input power supply to the site AC power source.
Detailed instructions for handling and replacing the Cisco uBR7225VXR universal broadband router
power supply is available in Cisco uBR7200 Series Universal Broadband Router AC Power Supply
Replacement Instructions.
This document is available on Cisco.com at the following URL:
http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/installation/4848pwra.html
The AC-input power supply has an electrical current rating of 4A for the Cisco uBR7225VXR.
Note
Figure 1-8
4
1
2
OL-17309-01
(Figure 1-8 on page 1-13
Cisco uBR7225VXR AC-Input Power Supply
1
3
Power switch
Handle
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
shows the faceplate of the AC-input power supply.)
PWR-UBR7 225VXR-AC
100-240 VAC
4-2 A
50-60 Hz
Output
Input
OK
OK
AC-input receptable
3
4
Captive installation screw
Hardware Component Descriptions
2
1-13
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Troubleshooting
