Installing A Dc Power Supply - Cisco Nexus 93120TX Installation Manual

Replacing Modules
• There must be an earth ground connection to the chassis that you are installing the replacement module.
Step 1
If the power supply slot has a blank filler panel, remove it from the slot by moving its release latch to the left and pulling
the panel out of the slot.
Step 2 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle,
align the back end of the power supply (the end with the electrical connections) to the open power supply slot and slide
the power supply all the way into the slot until it clicks into place.
Step 3 Test the installation by trying to pull the power supply out of the slot without using the release latch.
If the power supply does not move out of place, it is secured in the slot. If the power supply moves, carefully press it all
the way into the slot until it clicks in place.
Step 4
Attach the power cable to the electrical outlet on the front of the power supply.
Step 5 Connect the other end of the power cable to an AC power source if it is not already connected to a power source.
• For no power redundancy, connect one power supply to one power source.
• For n+1 power redundancy, connect two power supplies to one or two power sources.
• For n+n power redundancy, connect each of two power supplies to a different power source.
Depending on the outlet receptacle on your power distribution unit, you might need the optional jumper cable
Note
to connect the switch to your outlet receptacle.
Step 6
Verify that the power supply is operational by verifying that the power supply
what the power supply LEDs indicate, see

Installing a DC Power Supply

This topic is for installing the 48-V DC power supply into switch chassis. .
If the switch has two power supplies, you can replace one power supply while the other one provides power
to the switch. If you have only one power supply in the switch, install the replacement power supply in the
open slot before removing the original power supply.
Before You Begin
• The circuit breaker for the DC power source for the power supply must be turned off.
• The power supply that you are installing must be capable of using the same airflow direction as the fan
• A DC power source must be within reach of the power cable that will be used with the replacement
To ground the chassis, see Grounding the Chassis, on page
Power Supply LEDs, on page
trays installed in the same switch
power supply. If you are using n+n power redundancy, there must be a separate power source for each
power supply installed in the chassis. Otherwise, only one power source is required.
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Cisco Nexus 93120TX NX-OS Mode Switch Hardware Installation Guide
Installing a DC Power Supply
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LED is green. For information on
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