Cisco XR 12410 - Manual (Page 167)

4-37
Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Chapter 4 Troubleshooting the Installation
Troubleshooting the Cooling Subsystem
Troubleshooting the Cooling Subsystem
You may need to troubleshoot the cooling subsystem if an overtemperature
condition occurs. The cooling subsystem of the router consists of a blower module
in the chassis and a fan in each of the power supplies. The blower module and the
power supply fans circulate air to maintain acceptable operating temperatures
within the router (
Figure 4-11 ).
This section contains information to troubleshooting the cooling subsystem and
includes:
• Blower Module Operation, page 4-38
• Power Supply Operation, page 4-38
• Overtemperature Conditions, page 4-39
• Isolating Cooling Subsystem Problems, page 4-40
Figure 4-11 Cooling Air Flow
Air exhaust
Line card and RP card cage
Room air
Air filter
Switch fabric card cage
Blower module
Power supplies
50396