Cisco Nexus 93120TX Hardware Installation Manual page 45

Replacing Modules
To prevent electrostatic discharge (ESD) damage to the module electronics, do not touch the electrical
Caution
connectors on the back side of the module. Also, to prevent any damage to the electrical connectors, prevent
them touching anything that can bend or break them.
d) Place the removed module on an antistatic surface or in an antistatic bag. If possible, repack the module in its packing
materials for safe shipping or storage.
Step 2 Follow these steps to replace the missing fan module within two minutes to avoid a shutdown.
a) Remove the replacement fan module from its packing materials and place it on an antistatic surface.
Hold the module by its handle and do not touch the electrical connectors on its backside. Also, to protect the electrical
connectors, avoid letting them come in contact with anything other than the electrical connectors inside the chassis.
b) Verify that you have the right fan module for the chassis. The correct fan module has one of the following part
numbers:
• N9K-C9300-FAN3-B (port-side exhaust airflow direction and a blue stripe)
• N9K-C9300-FAN3 (port-side intake airflow direction and a burgundy stripe)
Be sure that the airflow direction of the new fan module matches the airflow direction of the other fan and
Note
AC power supply modules already installed in the chassis. Port-side intake airflow is indicated with burgundy
or green coloring, and port-side exhaust airflow is indicated with blue or gray coloring. Power supplies
with dual-direction airflow (airflow direction is set by the fan modules) have white coloring.
c) Position the fan module in front of the open fan slot (be sure that the backside of the module with the electrical
connectors is positioned to enter the slot first) and slide the module all the way into the chassis until its front side
comes in contact with the chassis. For the last 0.2 inches (0.5 cm), carefully mount the module onto the chassis
connectors by pushing more firmly, but do not force the module if it does not move further (excessive force can
damage the connectors).
If you are not able to push the module all the way into the slot, carefully slide the module out of the slot
Note
and check its electrical connectors for damage. If damaged, contact Cisco Technical Assistance for help.
If undamaged, repeat this step to reinstall the module.
1 Holding the handle on the fan module, slide its
connector end into the fan slot until the front of the
fan module is touching the chassis.
2 Screw in the captive screw to attach the module to
the chassis.
Cisco Nexus 93120TX NX-OS Mode Switch Hardware Installation Guide
Replacing a Fan Module During Operations
35