Blower Module Faults - Cisco 10000 Series Troubleshooting Manual

Chapter 2 PEM Faults and Blower Failures

Blower Module Faults

The blower module is critical to the operation of the Cisco 10000 series router. Severe overheating can
result in system failure. The blower module contains a redundant array of fans in a single shelf unit.
Figure 2-3
Figure 2-3
Table 2-5
Table 2-5
Symptom
Fans OK LED on blower
module fails to power on
FAN FAILURE LED is lit
MULTI-FAN FAILURE
LED is lit
Fans run but the system
overheats
OL-0439-02
shows the blower module front panel and its LED indicators.
Blower Module
FA NS
FA N
OK MU LT I-
FA ILU RE
FA N
FA ILU RE
CA UT IO
Wh en ho
N
t sw ap pin
rem ov al
g thi s fan
an d rep
be do ne tra y,
lac em en
in un de
sys tem t mu st
r two mi
sh utd ow nu tes or
n wil l oc
cu r.
lists the blower module fault indications and recommended actions.
Blower Module Fault Indications and Recommended Action
Steps to Take
Make sure the blower module is fully inserted into the chassis.
1.
If you use DC PEMs, make sure the wiring is not reversed.
2.
Replace the blower module.
3.
Replace the blower module.
Replace the blower module.
Make sure that all intake and exhaust vents on the front and rear
1.
of the chassis are free of blockages.
Make sure that the ambient temperature and other environmental
2.
factors in the system area are within the ranges specified in the
"Using the show environment Command for Basic
Troubleshooting" section on page
3. Make sure all line cards and blank faceplates are in place. The
cooling system cannot operate effectively unless the chassis is
fully enclosed.
Check the air filter, and if necessary clean or replace it.
4.
5. Reduce the ambient temperature of the area surrounding the router
chassis.
1-3.
Cisco 10000 Series Router Troubleshooting Guide
Blower Module Faults
2-5