Chapter 6 Maintaining the Router
Removing and Replacing AC and DC Power Subsystem Components
6-14
Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
The following tools and equipment are required to remove and install power
equipment:
• Number 1 Phillips screwdriver
• 3/16-inch flat-blade screwdriver
• An ESD-preventive wrist strap
Installation Guidelines
The Cisco 12006 and Cisco 12406 series routers support online insertion and
removal (OIR). If you are replacing a redundant power supply, you can remove
and install the power supply while the system remains powered on without
causing an electrical hazard or damage to the system. This feature enables you
replace a power supply while the system maintains all routing information and
ensures session preservation.
However, to maintain operational redundancy, proper cooling, and meet EMI
compliance standards, you must have both working power supplies installed.
When you remove a failed power supply with the router in operation, perform the
replacement as quickly as possible. Make sure you have the tools and the
replacement power supply ready before beginning the removal and installation
procedure.
Power Supply and PDU Compatibility
Cisco 12006 and Cisco 12406 series routers are available with either an AC or DC
power supply system. The two types of power supplies for these systems are:
• Original power supplies (rated at 1400 watts) that shipped with earlier
systems
• Enhanced capacity power supplies (rated at 1900 watts) that ship with current
systems and upgrade kits
Removal and replacement procedures are the same for either type of power
supply, but because of their power capacity and physical differences, you cannot
mix different types of power supplies in the chassis.