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ProCurve 9408sl Routing Switch Fan Assembly 

Replacement Instructions

This booklet describes the procedures to replace the fan assembly in your ProCurve 9408sl Routing 
Switch. The fan assembly consists of two separate items: a fan control module, and the fan itself. 
Both items must be replaced in the event of a fan failure. Because the ProCurve 9408sl has redundant 
fan assemblies, you can replace a fan and fan control module while the chassis is powered on and 
running. The fans and fan control modules are located on the rear panel of the ProCurve 9408sl 
chassis. 

To replace a fan assembly, you need the following:

A new fan assembly, which you can order from HP after the warranty period. A new fan assembly 
(part # J8680-80003) can be ordered from the HP Parts Store (Online Shopping) web page (URL 
www.hp.com/buy/parts).

A small flathead screwdriver

A small Phillips screwdriver

An ESD wrist strap. If your ESD wrist strap has a “banana plug”, it can be plugged into the ESD 
connector on the ProCurve 9408sl chassis, located in the upper right corner of the chassis rear.

Replacing the Fan Assembly Procedure

Remove the fan control module: 

1.

Put on the ESD strap and ground yourself by inserting the plug into the ESD connector located 
in the upper right corner of the chassis rear.

2.

Using the Phillips screwdriver, loosen the two screws that secure the fan control module 
(marked “FCM A” or “FCM B”) to the chassis rear.

© Copyright 2005 Hewlett-Packard 
Development Company, L.P. The 
information contained herein is subject to 
change without notice.

Part Number: 5991-2188

Edition 1, September 2005

   *5990-

Fan Assembly Installation Precautions

 WARNINGS

WARNING

: To reduce risk of electric shock, the ESD wrist strap must have a series 1 meg 

ohm resistor.

WARNING

: When removing the fan module, the fan may still be spinning. Be careful to not 

accidentally insert your fingers into the fan while removing it from the chassis.

Cautions

Attach a properly grounded ESD wrist strap to your wrist when handling the fan and fan 
control module. Do not touch the components or edge connectors on any printed circuit 
boards, or the pins on any connectors. Otherwise, damage due to static discharge could 
occur.

To avoid overheating the ProCurve 9408sl chassis, remove only one fan or fan control module 
at a time. A minimum of one fan must remain operational at all times. Do not remove both 
fan assemblies from the chassis at one time.

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