Cisco Systems Cisco 7204 Manual De Usuario

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 

 in the chapter 

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.

The Cisco 7204 chassis, shown in 

, 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. 

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.

H6237

Power supply end

Port adapter end

Inlet

airflow

Exhaust

air