Safety information Additional information resources

Overview

This guide contains instructions for replacing the following customer replacement units (CRUs):

vPower supply

vSystem board

vMicroprocessor

vHard disk drive

vMemory modules

Safety information

Do not open your computer or attempt any repair before reading the “Important safety information” in the Quick Reference that was included with your computer. If you no longer have this copy of the Quick Reference, you can obtain one online from the IBM Web site at http://www.ibm.com/pc/support.

Additional information resources

If you have Internet access, the most up-to-date manuals for your computer are available from the World Wide Web. To access this information, point your browser to: http://www.ibm.com/pc/support

Type your machine type and model number in the Quick path field, and click Go.

Tools required

To replace some CRUs in your computer, you might need a flat-blade or Phillips screwdriver. Additional tools might be needed for certain CRUs.

Handling static-sensitive devices

Static electricity, although harmless to you, can seriously damage computer components and CRUs.

When you are replacing a CRU, do not open the static-protective package containing the new CRU until the defective CRU has been removed from the computer and you are ready to install the new CRU.

When you handle CRUs and other computer components, take these precautions to avoid static-electricity damage:

vLimit your movement. Movement can cause static-electricity to build up around you.

vAlways handle CRUs and other computer components carefully. Handle adapters, memory modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry.

vPrevent others from touching the CRUs and other computer components.