Cisco Nexus 9508 NX-OS Hardware Installation Manual page 117

Replacing or Installing Modules, Fan Trays, and Power Supplies
The lever clicks when you rotate it all the way to the front of the power supply. Be sure that the power supply is
fully inserted into the slot. The front of the power supply is even with the surface of the chassis.
b) Connect the power cables to the power supply as follows:
1. Verify that the circuit breakers for both input lines from the DC power source are turned off.
2. Use a torque screwdriver to unscrew three screws on the cover for the terminal box that is located on the front
of the power supply. Then lift off the cover as shown in the following figure.
1
The terminal box has four slots for four power terminals (ordered as negative [-], positive [+], positive
Note
[+], and negative [-]). Each terminal has two nuts that you use to fasten a power cable to the terminal.
3. Remove the two nuts from each terminal post in each slot of the terminal box.
4. Place each of the lugs for the two positive cables on the terminal posts for the positive slots (two middle slots)
of the terminal box and fasten each lug using two nuts. Tightened the nuts to 40 in-lb (4.5 N·m) of torque.
5. Place each of the lugs for the two negative cables on the terminal posts for the negative slots (two side slots) of
the terminal box and fasten each lug using two nuts. Tightened the nuts to 40 in-lb (4.5 N·m) of torque.
6. Replace the safety cover on the terminal box and fasten it in place using its three screws.
c) Power up the power supply as follows:
1. Turn on the power source circuit breaker for both input lines.
Remove 3 screws from the
safety cover.
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
Installing or Replacing a 3-kW DC Power Supply
2 Remove the cover.
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