Before You Begin - Sun Microsystems Enterprise 450 Guide

Removing and Replacing the CPU
Air Guide
An air guide is installed on all 501-5673 main logic boards. The following sections
describe how to remove and replace the CPU air guide.
Caution – The air guide is essential for proper system cooling. Do not start up the
system without the air guide installed.
How to Remove the CPU Air Guide
You must remove the air guide before removing or installing CPU modules.
Caution – This procedure must be performed by a qualified service-trained
maintenance provider. Persons who remove any of the outer panels to access this
equipment must observe all safety precautions and comply with skill-level
requirements, certification, and all applicable local and national laws.

Before You Begin

Complete these tasks, as described in the Ultra Enterprise 450 Server Owner's Guide:
"How to Power Down the System"
"How to Remove the Left Side Panel"
"How to Avoid Electrostatic Discharge"
en-8 Sun Enterprise 450 Server 480-MHz CPU Module Guide • August 2000