Cisco Systems Cisco 12816 Manuale Utente

This section contains removal and replacement procedures for the AC and DC 
power systems used with the Cisco 12016, Cisco 12416, and Cisco 12816 series 
routers. If you ordered an upgrade kit, you can use these same procedures to 
upgrade all of the power system components.

The illustrations in this procedure represent both original and upgraded power 
supplies and power shelves shipping with the Cisco 12016 series routers. 
Depending on your system, these components may not look exactly like those in 
your chassis, but the removal and replacement procedures are essentially the 
same. Multiple illustrations are presented to represent original and new models 
where appropriate.

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

The Cisco 12016 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 all three (standard) or four (optional) 
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.