Cisco 12416 Installation And Configuration Manual page 274

Troubleshooting the Cooling Subsystem
Make sure the blower modules are operating properly when you power on the
Step 1
system.
•
Eject and reseat the blower module making sure the captive screws are securely
Step 2
tightened.
If the blower module still does not function, go to Step 3.
Check for –48 VDC power by looking at the LED indicators on each power
Step 3
supply:
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•
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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To determine if a blower module is operating, check the two LED indicators
on the blower module front panel:
OK (green)—The blower module is functioning properly and receiving
–
–48 VDC power, indicating that the cables from the chassis backplane to
the blower module are good.
Fail (red)—A fault is detected in the blower module. Replace the blower
–
module.
If neither indicator is on and the blower is not operating, there may be a
–
problem with either the blower module or the –48 VDC power supplied
to the blower module. Go to Step 2.
If the Pwr OK indicator is on and the Fault indicator is off on each power
supply, it indicates that the blower is receiving –48 VDC.
If the blower module is still not functioning, there could be a problem
–
with the blower module controller card or an undetected problem in the
blower module cable. Replace the blower module.
– If the new blower module does not function, contact a Cisco customer
service representative for assistance.
If the Fault indicator is on, the power supply is faulty. Replace the power
supply.
If the Temp and Fault indicators are on, an overtemperature condition exists.
Verify that the power supply fan is operating properly.
–
If the fan is not operating, replace the power supply.
–
Contact your Cisco representative if replacing the power supply does not
fix the problem.
Chapter 5 Troubleshooting the Installation
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