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Cisco uBR7200 Series Universal Broadband Router AC Power Supply Replacement Instructions
78-4848-06
AC-Input Power Supply Overview
The Cisco uBR7225VXR power supply device does not have a cable retention clip.
Figure 1 Cisco uBR7225VXR AC-Input Power Supply
The Cisco uBR7225VXR power supply shuts itself down when the input AC voltage, the output DC
voltage, or the internal temperature of the chassis exceeds allowable tolerances. When this occurs, one
or both of the power supply front panel LEDs will turn red. The Cisco uBR7225VXR power supply must
then be reset by manually switching the power switch off and then back on to allow it to recover.
Cisco uBR7246 and Cisco uBR7246VXR
The power supply contains a main power switch, OK LED, and either an AC-input power receptacle, or
two hardwired DC-input power leads and three M5 grounding connectors (depending on the type of
installed power supply). Adjacent to the lower power supply bay, two M5 chassis grounding receptacles
provide a chassis ground connection for electrostatic discharge (ESD) equipment or a two-hole
grounding lug for the AC-input power supplies.
The Cisco uBR7246VXR and Cisco uBR7246 support an optional, second power supply for load sharing
and power redundancy. If you purchased a Cisco uBR7246VXR or Cisco uBR7246 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. (Figure 2 shows the faceplate of the Cisco uBR7246VXR and Cisco uBR7246 AC-input power
supply.)
Two captive installation screws secure the power supply to the chassis and seat the power supply in the
router midplane. A Power OK LED indicates that the power supply is delivering +5 VDC to 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. A cable-retention clip secures the
power cable to the AC-input power supply.
Note Each AC-input power supply has an electrical current rating of 7A.
270538
uBR7225-VXR
uBR7225-VXR
AC-input
receptacle
Captive
installation
screw
Power
switch
Handle