Cisco Nexus 3400-S, Hardware Installation Manual

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You can attach the ESD device to any earth ground or grounded object, such as a grounded rack or ground connection
on a chassis.
Step 2 Remove the fan module that you are replacing as follows:
a) On the fan module that you are removing, unscrew the two captive screws on the front of the fan module until each
screw is free of the chassis.
b) Holding the handle, pull the module out of the chassis and set it on an antistatic surface or in a antistatic bag.
Do not touch the electrical connectors on the back side of the module and prevent anything else from coming
into contact with and damaging the connectors.
Caution
Step 3 Install the replacement fan module as follows:
a) Hold the fan module with two hands. One hand holding its handle, and one hand supporting the weight of the fan
module. Align the back of the fan module (the side with the electrical connectors) to the open fan slot in the chassis.
b) Slide the fan module into the slot until it clicks in place.
c) Verify that the Status (STS) LED turns on and becomes green.
Replacing an AC Power Supply
You can replace an AC power supply during operations so long as there is another power supply installed and
operating during the replacement. The switch requires only one power supply for operations, so you can hot
swap the redundant power supply during operations. If there is only one power supply installed in the chassis,
you can replace it by installing the new power supply in the open power supply slot before removing the other
power supply. The module number can be found on the chassis.
Before you begin
• Verify that you have an ESD wrist strap or other device to prevent ESD damage to the components that
you touch.
• Verify that you have an antistatic surface or bag for placing the power supply module that you remove
from the chassis.
• Verify that the replacement power supply module has the correct direction of airflow (it has the same
coloring as the other fan and power supply modules in the same chassis). Otherwise the switch can
overheat and shut down.
Step 1
Attach an ESD wrist strap or other ESD device to your body and an earth ground to prevent ESD damage.
You can attach the ESD device to any earth ground or grounded object, such as a grounded rack or ground connection
on a chassis.
Step 2 Remove the power supply as follows:
a) Pull the power cord out from the power receptacle on the power supply to be removed and verify that the OK LED
turns off.
b) 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.
Cisco Nexus 3400-S Hardware Installation Guide
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Replacing Modules
Replacing an AC Power Supply