14 1200-Watt DC-Input Power Supply Replacement Instructions
Checking the Installation
Step 4
Verify that the output fail LED stays off.
•
If the output fail LED goes on, move the power supply to the other bay if possible and
turn the power switch ON (|). If the LEDs go on properly when the supply is installed
in the other bay, suspect a faulty backplane power connector.
•
If the output fail LED goes on when the power supply is installed in the other bay,
suspect a power supply failure or an adverse environmental condition (the power supply
has detected an overvoltage or overtemperature condition and has shut down).
•
If two power supplies are installed, and the output fail LED goes on only on one power
supply, assume that the power supply or DC source (for that supply) is faulty.
•
If the output fail LED lights on two supplies that are connected to the same DC source,
suspect that the DC source is faulty, or that an overvoltage or overtemperature condition
is causing the power supplies to shut down.
•
If the output fail LED lights on two supplies that are connected to separate DC sources,
assume that an overvoltage or overtemperature condition is causing the power supplies
to shut down.
If the power supply fails to operate properly after several attempts to initialize it, contact a service
representative for assistance. If the power supply fails (and you need to order a replacement) and you
did not record the type of power supply in your chassis, you will have to check the chassis in order
to make this determination.
Timesaver
The system can identify which type of power supplies are in your chassis: DC-input or
AC-input. As a general precaution, use the show environment all command and note the type of
power supply indicated in each of your chassis (indicated as either “1200W DC” or “1200W AC”).
Record and save this information in a secure place.
This completes the power supply installation. Refer to the Cisco 7513 Hardware Installation and
Maintenance publication for installation troubleshooting procedures, and to the Router Products
Command Reference publication for descriptions and examples of software features and commands.
