Bridge/Router Installation and Configuration Guide

Chapter 5 Troubleshooting the Installation
Troubleshooting the Cooling Subsystem
5-36
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
1 Clock Scheduler Card
3 Switch Fabric Cards
1 8-port OC3 POS controller (8 POs).
1 OC12 POS controller (1 POs).
1 OC48 POS E.D. controller (1 POs).
7 OC48 POS controllers (7 POs).
1 Ethernet/IEEE 802.3 interface(s)
17 Packet over SONET network interface(s)
507K bytes of non-volatile configuration memory.
20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
8192K bytes of Flash internal SIMM (Sector size 256K).
Router#show controller fia
Fabric configuration: Full bandwidth nonredundant
Master Scheduler: Slot 17
Troubleshooting the Cooling Subsystem
The cooling subsystem of the router consists of an upper and lower blower module
in the chassis and a fan in each of the power supplies. The blower modules and
the power supply fans circulate air to maintain acceptable operating temperatures
within the router (
Figure 5-8).
This section contains information to troubleshooting the cooling subsystem and
includes:
• Blower Module Operation, page 5-38
• Power Supply Operation, page 5-38
• Overtemperature Conditions, page 5-39
• Isolating Cooling Subsystem Problems, page 5-39