4-2 Sun Fire X2250 Server Service Manual • April 2009
■Alcohol pads (for CPU replacement by service personnel only)
■5 mm nut driver (for motherboard replacement by service personnel only)
4.2 Installation Precautions
Before removing the system’s top cover,read the following sections. These sections
contain important electrostatic discharge (ESD) precautions, along with
preinstallation and postinstallation instructions.

4.2.1 ESD Precautions

ESD can damage your processor,disk drives, expansion boards, and other
components. Always observe the following precautions before you install a system
component.
■Do not remove a component from its protective packaging until you areready to
install it.
■Weara wrist strap and attach it to the system chassis ground, or to any metal part
of the system, before handling components.
■Press the Power button on the front of the chassis to turn offpower before
removing or replacing any of the system components.

4.2.2 Preinstallation Instructions

Always perform the following steps before you install any component:
1. Turn off the system and all of the peripherals connected to it.
Caution – Failure to properly turn offthe system before you start installing
components can cause serious component damage.
Caution – Follow the ESD precautions described in Section4.2.1, “ESDPrecautions”
on page 4-2 when handling a system component.