Installing The Fan Assembly - Cisco Catalyst 4900M Installation Manual

Removing and Replacing the Fan Assembly
Caution
Step 1
Step 2

Installing the Fan Assembly

Step 1
Step 2
Step 3
Step 4
Cisco Catalyst 4900M Switch Installation Guide
3-26
Never operate the system for an extended period if the fan assembly is removed
or if it is not functioning properly. An over-temperature condition can cause
severe equipment damage.
Follow these steps to remove the existing fan assembly:
Loosen the two captive installation screws on the fan assembly by turning them
counterclockwise.
Grasp the fan assembly with both hands and pull it outward; gently move it side
to side if necessary to unseat it from the backplane. Slide it out of the chassis and
place it in a safe place.
Follow these steps to install the new fan assembly:
Hold the fan assembly with the captive screws on the left.
Place the fan assembly into the fan assembly bay so it rests on the chassis, and
then lift the fan assembly up slightly, aligning the top and bottom guides.
Slide the fan assembly into the chassis until the two captive installation screws
make contact with the chassis.
Using a screwdriver, tighten the two captive installation screws by turning them
clockwise.
Chapter 3 Installing the Switch
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