3.6.1 Before You Begin

Complete these tasks:

• "2.1 How to Power Off the System"

• "2.4 How to Position the System for Service"

• "2.6 How to Remove the System Cover"

• "2.8 How to Avoid Electrostatic Discharge"

The system supports one and two CPU module configurations. When replacing or installing CPU modules, you must fill the CPU slots in the following order.

For further information about CPU modules, see your Sun Enterprise 220R Server Owner's Guide.