Installing Or Replacing A 3-Kw Dc Power Supply - Cisco Nexus 9508 Hardware Installation Manual

Replacing or Installing Modules, Fan Trays, and Power Supplies
• If you are using the n+n redundancy mode, you must connect the power cable to the same power source as used
by the other power supplies in the same set of power supply slots in the chassis. The power cables for slots 1
through 4 must be connected to one power source and the power cables inslots 5 through 8 must be connected
to another power source.
i) If you connected the power supply to a DC power source do the following:
1 Turn on the circuit breaker for the DC power source.
2 Turn on the power supply by setting the power switch to on (1).
j) Verify that the OK LED turns on and eventually becomes green.

Installing or Replacing a 3-kW DC Power Supply

Before You Begin
• The power source must be installed within reach of the power cables.
• The power source must meet the power specifications required by the switch.
• There are one or two power sources available. If using n+n redundancy, there must be two power sources
• Prepare an antistatic surface or antistatic bag for the power supply that you are removing.
Step 1 Open the packaging for the new 3-kW DC power supply and inspect the module for damage.
If the module is damaged, contact the Technical Assistance Center (TAC).
Step 2 If you are installing the module in an empty slot, remove the blank filler plate that is already in that slot by unscrewing
its captive screw and pulling it out of the slot.
Step 3
If you are replacing a power supply that is currently in the chassis, remove the existing module from the chassis by
following these steps:
a) Turn off the power to the power supply that you are replacing as follows:
1 Shut off the power supply by setting its power switch to 0.
2 Shut off the power from the power source by turning off the circuit breaker for each of the two input lines to the
power supply.
Verify that the LEDs on the power supply turn off.
b) Disconnect the power cables from the power supply as follows:
1 Remove the three screws on the safety cover for the terminal box located on the front of the power supply and
pull the cover off the terminal box as shown in the following figure.
Note
available. Otherwise, only one power source is required.
The terminal box has four slots for four power terminals (ordered as negative [-], positive [+], positive
[+], and negative [-]). Each terminal has two nuts that you use to fasten a power cable to the terminal.
Installing or Replacing a 3-kW DC Power Supply
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
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