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Replacing Modules
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Replacing a 4 (RU) Fan Module
The fan module is designed to be removed and replaced while the system is operating without causing an
electrical hazard or damage to the system if the replacement is performed within one minute.
If you do not have the appropriate replacement fan module, leave the original fan module in its slot to preserve
the designed airflow for the switch until you have the replacement fan module. The module number can be
found on the chassis.
Caution
Before you begin
• Verify that you have an ESD wrist strap or other device to prevent ESD damage for components that
• Verify that you have an antistatic surface or bag for placing the fan module that you remove from the
• Verify that the replacement fan module has the correct direction of airflow (it has the same coloring as
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.
Replacing a 4 (RU) Fan Module, on page 29
Replacing an AC Power Supply, on page 30
Replacing a Supervisor Module, on page 31
Installing or Replacing a Line-Card Expansion Module (LEM), on page 34
Replacing a Switch Card, on page 36
The fans might be turning when you remove the fan assembly from the chassis. Keep fingers, screwdrivers,
and other objects away from the openings in the fan assembly's housing.
you touch.
chassis.
the other fan and power supply modules in the same chassis).
C H A P T E R
Cisco Nexus 9408 NX-OS Mode Switch Hardware Installation Guide
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