Cisco 12416 Installation And Configuration Manual page 242

Troubleshooting the Power Subsystem
Make sure the router is powered on and that all power cords are connected
Step 2
properly:
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Check the power supply status LED indicators:
Step 3
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
5-8
Power cords on the back panel of the power shelf are secured in place with
their retention clips.
Power cords at the power source end are securely plugged into their own
AC power outlet.
The source AC circuit breaker is switched on.
PWR OK (green)—Indicates the power supply is operating normally, and the
source AC voltage is within the nominal operating range of 200 VAC to
240 VAC. This indicator lights when the power supply is properly seated in
position.
FAULT (yellow)—Indicates the system detected a fault within the power
supply or the incoming voltage is too low. This indicator remains off during
normal operation.
If the indicator is on:
Check that the source voltage is within the correct range: 170 to 262 VAC
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Remove and then apply power to the power supply by disconnecting its
–
power cord. If the indicator remains on, replace the existing power supply
with a spare.
If the spare power supply also fails, the problem could be a faulty power
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shelf backplane connector. Power off the router and contact a Cisco
service representative for assistance.
TEMP (yellow)—Indicates that the power supply is in an overtemperature
condition, causing a shut-down to occur.
If the temp indicator is on, the fault indicator is also on.
Note
Verify that the power supply fan is operating properly.
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Verify that the blower modules are operating properly.
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– If the power supply fan and blower modules are operating properly,
replace the existing power supply with a spare.
Chapter 5 Troubleshooting the Installation
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