Replacing A Fan Module; Step - Cisco Nexus 9396PX Hardware Installation Manual

Replacing a Fan Module

Step 8

Holding the replacement module by its two handles, position the module with the electrical components on its backside
facing the open uplink-module slot.
Step 9 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 and
Note
check its electrical connectors for damage. If damaged, contact Cisco Technical Assistance for help. If undamaged,
repeat Step 6 to reinstall the module.
Step 10
Screw in both captive screws on the front of the module to secure the module to the chassis. Tighten each screw to 8
in-lb (0.9 N·m).
Step 11 Verify that the Status (STS) LED turns on and becomes amber.
Step 12 Reconnect each of the uplink cables and verify that the LED for each port becomes green.
Under each set of two uplink ports, there is an Active (ACT) LED that indicates whether the ports are active for this
switch. Connect cables to only the active ports.

Replacing a Fan Module

The switch requires that three fan modules always be installed in the chassis to maintain the designed airflow.
You can remove one fan module temporarily to replace it with another fan module within two minutes to
avoid a shutdown, but if the replacement fan module is not available, leave the original fan module in the
chassis.
All fan and power supply modules must have the same airflow direction or else an error can occur with the
switch overheating and shutting down. You can determine the airflow direction of a fan module by the color
of the stripe on the front of the module. A blue stripe indicates a port-side exhaust airflow direction and a
burgundy stripe indicates a port-side intake airflow direction. To avoid over heating the switch, make sure
that the fan modules on port-side exhaust modules are located in a cold aisle or make sure that the fan modules
on port-side intake chassis are located in the hot aisle.
Before You Begin
Before you can replace a fan module, ensure that both of the following conditions exist:
• There are two functioning fan modules in the other fan slots. In order to replace a fan module during
• The replacement fan module must have the same airflow direction as the other modules in the chassis.
Cisco Nexus 9396PX NX-OS-Mode Switch Hardware Installation Guide
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operations, there must be two fan modules circulating air in the chassis at all times. The other fan module
is redundant and can be replaced.
If the other modules have blue coloring, the replacement fan module must have blue coloring. If the
other modules have a burgundy coloring (or the DC power supplies have green coloring), the replacement
fan module must have burgundy coloring.
Replacing Modules