Chassis - Cisco Router 7204 Installation And Configuration Manual

Chapter 1 Product Overview
Physical Description
Figure 1-16 Internal Air Flow—Top View
Power supply end
Exhaust Inlet
air airflow
Port adapter end
The left and right sides of the chassis must remain unobstructed to ensure adequate air flow and prevent
overheating inside the chassis; we recommend at least three inches of clearance. (See the "Site
Requirements" section on page 2-4 in the chapter Chapter 2, "Preparing for Installation.")
Temperature sensors on the network processing engine and I/O controller monitor the internal air
temperature and send warning messages when the internal air temperature approaches a specified
threshold. If the internal temperature exceeds the specified threshold, the system environmental monitor
shuts down all internal power to prevent equipment damage from excessive heat.

Chassis

The Cisco 7204 chassis, shown in Figure 1-17, has four slots for the port adapters, one slot for the I/O
controller, and one bay for the subchassis. To replace the chassis, you must remove all of the internal
components, including the subchassis.
Note Because you must remove all the internal components when replacing the chassis, refer to the
configuration notes that explain how to remove and replace the internal components. These documents
are available on Cisco.com.
Cisco 7204 Installation and Configuration Guide
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