Second Edition (February 2006) © Copyright Lenovo 2006. Portions © Copyright International Business Machines Corporation 2006. All rights reserved. GOVERNMENT USERS ­ RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software­Restricted Rights at FAR 52. 227-19, when applicable, or under Rights in Data-General, FAR 52. 14 (Alternate III). Contents About this manual. 19 Introduction. Important service information. Strategy for replacing FRUs. How to use error messages. Diskette compatibility matrix. Safety notices: multilingual translations. Safety information. General safety. Electrical safety. Safety inspection guide. Handling devices that are sensitive to discharge. Grounding requirements. Laser compliance statement. electrostatic. General descriptions. Read this first. What to do first. Related service information. Service Web site. Restoring the pre-installed system...