Replacing A Power Supply Module; Removing An Ac Power Supply - Cisco Nexus 9396TX Installation Manual

Replacing a Power Supply Module

Note
d) Verify that the STS LED turns on and becomes green.
If the STS LED does not turn on, slide the module out of the chassis, and visually check the electrical connectors on
the back side of the chassis for damage. If damaged, contact Cisco Technical Assistance for help. If undamaged,
repeat the previous step to reinstall the module.
e) Secure the fan module to the chassis by screwing in the captive screw to the chassis. Tighten the screw to 5 to 7 in-lb
(0.56 to 0.79 N·m).
Replacing a Power Supply Module
The switch requires two power supplies for redundancy. With one power supply providing the necessary
power for operations, you can replace the other power supply during operations so long as the new power
supply has the same airflow direction as the other modules in the chassis.
You can replace a power supply with another supported power supply that has the same power source type
as the other installed power supply. Additionally, the airflow direction of the power supply must match or
conform to the airflow direction of the installed fan modules. For the airflow direction used by the switch,
see the coloring of the fan modules.

Removing an AC Power Supply

To remove an AC power supply, you must first disconnect the power cable and then remove the module from
the chassis.
Before you begin
• To replace a power supply during operations, you must have a functioning power supply providing power
• Ensure that the chassis is grounded. For grounding instructions, see
Step 1 Pull the power cord out from the power receptacle on the power supply to be removed and verify that the LED turns off.
The LED might be on and amber colored to indicate that the input power has been disconnected.
Note
Step 2 Remove the power supply from the chassis by pushing and holding its thumb latch to the left and pulling the power supply
part way out of the chassis.
Step 3 Place your other hand under the power supply to support it while you slide it out of the chassis.
Either place the power supply on an antistatic surface or pack it in its packing materials.
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If you are not able to push the module all the way into the slot, carefully slide the module out of the slot
and check its electrical connectors for damage. If damaged, contact Cisco Technical Assistance for help.
If undamaged, repeat this step to reinstall the module.
to the switch while you replace the other power supply. If there is only one power supply installed in the
switch and you need to replace it, install the new power supply in the open slot and power it up before
removing the original power supply.
Replacing Modules
Grounding the Chassis, on page 24.