Cisco Catalyst 8500 Series Hardware Installation Manual page 56

Removing the Fans
• Remove the power supplies before you remove the chassis top cover.
Procedure
Step 1 Remove the chassis top cover by performing the following steps:
a) Remove the twelve top surface screws on the chassis cover.
b) Remove the five screws from the left side of the chassis and five screws from the right side of the chassis.
c) Lift the chassis cover.
Step 2 Position the chassis so that you have the most comfortable access to the chassis to remove the fans.
The fans are located at the rear of the chassis.
Step 3
Unplug the six fan connectors from the motherboard.
Step 4 Remove the three screws from the rear of the chassis as shown in the following figure.
Step 5 Rotate the fan tray slightly forward, and then lift it out of the chassis.
Cisco Catalyst 8500 Series Edge Platforms Hardware Installation Guide
46
Removing and Replacing FRUs