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Installing Field Replaceable Units
Step 4
Verify that the power supply is receiving power by checking that the LED is on and is amber or red. For more
information about the power supply LEDs and the conditions that they indicate, see
When you first activate the power supply, you can verify the functionality of the LED by checking that LED
turns on for a couple of seconds. If the LED is flashing amber or red, check the power connections on the
power supply and the power source.
Connecting to a DC Power Source
To connect the DC power supply directly to one or two DC power sources, follow these steps:
Warning
Warning
Procedure
Step 1
Prior to connecting the power supply to a power source, ensure that the chassis is properly grounded.
Step 2
Plug the DC power cable into the DC power supply.
Step 3
Turn off the power at the circuit breakers for the portions of the DC grid power that you are connecting to
and verify that all of the LEDs on the DC grid power supplies are off.
Step 4
Depending on the power supply installed, install the two cables from the DC power supply to the DC power
source as follows:
• If you are using C9K-PWR-1600WDC-R or C9K-PWR-930WDC-R, do the following:
Before performing any of the following procedures, ensure that power is removed from the DC
circuit.Statement 1003
Hazardous voltage or energy may be present on DC power terminals. Always replace cover when terminals
are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1075.
a. If the unconnected end of each power cable is not stripped off of its insulation for the last 0.75 inches
(19 mm), use wire strippers to remove that amount of insulation.
b. Attach the negative cables to the negative terminals of a DC power source, and attach the positive
cables to the positive terminals of the same power source.
Cisco Catalyst 9500 Series Switches Hardware Installation Guide
Connecting to a DC Power Source
Power Supply
LEDs.
75
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Troubleshooting
