Overview

This guide is intended to be used by customers who are replacing Customer Replaceable Units (CRUs) as well as trained service personnel who are replacing Field Replacement Units (FRUs). In this guide, CRUs and FRUs will often be referred to as parts.

This guide does not include procedures for all parts. It is expected that cables, switches, and certain mechanical parts can be replaced by trained service personnel without the need for step-by-step procedures.

Note: Use only the parts provided by Lenovo™.

This guide contains instructions for replacing the following parts:

vPower supply

vSystem board

vMicroprocessor

vMemory modules

vAdapter

vHard disk drive

vOptical drive

vDiskette drive

vKeyboard

vMouse

vInternal speaker

Safety information for replacing CRUs

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 Support Web site at http://www.lenovo.com/think/support.

Safety information for replacing FRUs

Do not attempt any repair before reading the “Important safety information” in the Hardware Maintenance Manual (HMM) for the computer. You can find the HMM on the Support Web site at http://www.lenovo.com/think/support.

Additional information resources

If you have Internet access, the most up-to-date information for your computer is available from the World Wide Web.

You can find the following information:

vCRU removal and installation information

vPublications

vTroubleshooting information

vParts information