Removing And Replacing The Fan Assembly Module - Cisco Universal Broadband Router uBR10012 Hardware Installation Manual

Removing and Replacing the Fan Assembly Module

Figure 5-4
Replace the front cover (see
Step 5
Removing and Replacing the Fan Assembly Module
The Cisco uBR10012 chassis should not be run without a working fan assembly module for more than
Caution
three minutes. To prevent the possibility of the system overheating, be sure that the replacement fan
assembly module is out of its box and packaging, so it is ready to install as soon as the defective module
is removed.
The fan assembly module does not need to be replaced when it is operating normally. However, if either
of the two failure LEDs come on, the fan assembly module should be replaced:
•
•
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
5-6
Air Filter Inserted into the Front Cover
"Replacing the Front
SINGLE FAN FAILURE—This yellow LED indicates that one of the four fans in the module has
failed. The module can still provide enough cooling to safely operate the Cisco uBR10012 chassis,
but it might begin operating the fans in its high-speed mode to do so. If this LED lights, the fan
assembly module should be replaced as soon as is conveniently possible.
MULTIPLE FAN FAILURE—This yellow LED indicates that two or more fans in the module have
failed, and that the module is no longer able to consistently cool the Cisco uBR10012 chassis. To
prevent overheating the chassis and possible damage to the line cards and other modules, the fan
assembly module should be replaced immediately.
Chapter 5 Maintaining the Cisco uBR10012 Router
Cover").
OL-18259-09