Checking The Installation; Finding The Fan Serial Number - Cisco Catalyst 6840 Series Hardware Installation Manual

Replacing the Fan Tray

Checking the Installation

Procedure
Step 1 Listen for the fans; you should immediately hear them operating. If you do not hear them, ensure that the fan
tray is inserted completely in the chassis and that the faceplate is flush with the switch back panel.
Step 2
Verify that the Fan LED is green. If the LED is amber, one or more of the fans are faulty.
If after several attempts the fans do not operate or if you experience trouble with the installation (for instance,
if the captive installation screws do not align with the chassis holes), contact a Cisco customer service
representative for assistance.

Finding the Fan Serial Number

If you contact Cisco Technical Assistance, you need to know the fan serial number. This figure shows where
the serial number is located. You can also use the show version privileged EXEC command to see the serial
number. For more information, refer to Fan Tray LED
Catalyst 6840-X Switch Series Hardware Installation Guide
Checking the Installation
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