Cisco 7206 - VXR Router Installation Manual page 22

Physical Description
Figure 1-3
Chassis
grounding
receptacles
Note The network processing engine does not support OIR. You must power down the Cisco 7206 before
removing the network processing engine from the router.
The network processing engine has no external connectors or LEDs. There is a handle for removing and
installing the network processing engine and two captive installation screws for securing it to the chassis.
The Cisco 7206 router comes equipped with one 280W AC-input or one 280W DC-input power supply.
A fully configured Cisco 7206 router operates with only one installed power supply; however, a second,
optional power supply of the same type provides hot-swappable, load-sharing, redundant power.
Figure 1-3
power supply filler plate is installed over the second power supply bay.)
Do not mix power supplies in the Cisco 7206. In dual power supply router configurations, both power
Caution
supplies must be of the same type (two AC-input power supplies or two DC-input power supplies).
The power supply has the router's main power switch and either an AC-input power receptacle or a
hardwired DC-input power cable (depending on the type of installed power supply).
Adjacent to the power supply bays are two chassis grounding receptacles that provide a chassis ground
connection for ESD equipment or a two-hole grounding lug (refer to
Three internal fans draw cooling air into the chassis and across internal components to maintain an
acceptable operating temperature. (Refer to
located in the subchassis.
To ensure the proper flow of cooling air across the internal components, make sure blank port adapters
Caution
are installed in unoccupied port adapter slots, and power supply filler plates are installed in unoccupied
power supply bays.
Cisco 7206 Installation and Configuration Guide
1-4
Cisco 7206 Router—Rear View
Power supply
filler plate
Network processing engine
or network services engine
Power switch
shows the rear of a Cisco 7206 router configured with a single AC-input power supply. (A
Internal fans
AC-input
receptacle
NETWORK PROCESSING ENGINE-150
AC-input
power supply
Figure 1-3.) The three fans are enclosed in a tray that is
Chapter 1 Product Overview
Figure 1-3).
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