Fan Tray And Blower Assembly Overview - Cisco 7500 Series Configuration Manual

Chapter 1 Cisco 7500 Series Product Overview
Figure 1-30
Standoff
screw holes
The CI isolates the CPU and system software from chassis-specific variations, and is attached directly
to the front (noninterface processor side) of the system backplane.
The functions of the CI are as follows:
•
•
•
•
In the Cisco 7513 and Cisco 7513-MX, a hard shutdown is achieved by disabling the power source.
Note
In the Cisco 7576, both routers share the same power source. In the Cisco 7576, when one router
senses a problem requiring a hard shutdown, the RSP and all interface processors installed in that
router (only) are powered off. In the first 14 temperature cycles, the RSP and interface processors are
powered back on once the temperature of the system falls below a certain temperature setpoint. At
the fifteenth temperature cycle, this temperature setpoint is changed to a very low value, preventing
the affected router from powering back up.
This achieves a hard shutdown of one router without affecting the other router. The RSP and interface
processors will remain disabled until the power is manually recycled. This allows you to choose a
suitable time to recycle the power when it will not adversely affect your users.
For CI maintenance information, see
section on page
7507-MX" section on page
Cisco 7513-MX, and Cisco 7576" section on page
ships as Product Number MAS-7500CI=.)

Fan Tray and Blower Assembly Overview

Blower and fan tray assemblies cool the interior of the Cisco 7505 router chassis. It may be difficult to
determine whether or not the fans or blowers are operating in noisy, air-conditioned rooms. If you
determine that they are not operating, contact a customer service representative immediately. There are
no installation adjustments that you should make if the fan or blower assembly does not function
properly at initial startup.
OL-5008-03 B0
7500 Series Chassis Interface
Chassis interface
Report backplane type and arbiter type
Monitor power supply and fan and blower status
Monitor the temperature sensors on the RSP
Provide router power up/down control and power supply power-down control
5-11, "Removing and Replacing the Chassis Interface in the Cisco 7507 and Cisco
6-12, and
Standoff
screw holes
"Removing and Replacing the Chassis Interface in the Cisco 7505"
"Removing and Replacing the Chassis Interface in the Cisco 7513,
7-14. (For all Cisco 7500 series routers, a spare CI
Cisco 7500 Series Installation and Configuration Guide
Fan Tray and Blower Assembly Overview
1-51