Chapter 3
Maintaining the Chassis
Replacing the Fan Assembly
3-8
Catalyst 8540 Chassis Installation Guide
78-6134-03
Removing the Fan Assembly
To remove the existing chassis fan assembly, follow these steps:
Step 1
Locate the fan assembly on the left side of the module cage, above the power
supply. (See Figure 3-4.)
Step 2
Use a flat-blade screwdriver to loosen each of the two captive installation screws
by turning them counterclockwise. Do not attempt to completely remove them.
Step 3
Grasp the fan assembly with both hands and pull it toward you and away from the
backplane using steady pressure until it frees the backplane.
Step 4
Lift the fan assembly out of the chassis and put it in a safe place.
Proceed to the following section to reinstall a fan assembly immediately if the
power has not been turned off.
Caution
Never operate the system if the fan assembly is not functioning
properly or if a fan assembly is not quickly reinstalled. An
overtemperature condition can result in severe equipment damage.
