Cisco Nexus 9508 NX-OS Hardware Installation Manual page 114

Installing or Replacing a 3-kW DC Power Supply
• The power source must meet the power specifications that the switch requires.
• 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. Do this action
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 that is located on the front of the power supply.
Then pull the cover off the terminal box as shown in the following figure.
Note
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
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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.
Replacing or Installing Modules, Fan Trays, and Power Supplies