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IBM Mobile Systems ThinkPad i Series 1400 (2611) Hardware Maintenance Manual S10L-9952-02 August 1999 Before using this information and the product it supports, be sure to read the general information under "Introduction" on page 1, "Read This First" on page 20 (for Part I), and "Read This First" on page 106 (for Part II). Third Edition (August 1999) The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimers or express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes in the products or the programs described in this publication at any time. Requests for technical information about IBM products should be made to your IBM Authorized Dealer or your IBM Marketing Representative. © Copyright International Business Machines Corporation 1999, 1998. All rights reserved. Note to US Government Users -- Documentation related to restricted rights -- Use, duplication, or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp. Preface About This Manual This manual contains service and reference information for IBM ThinkPad i Series 1400 (2611) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. The manual is divided into sections as follows: The Introduction section provides general information, guidelines, and safety information required to service computers. The product-specific section includes service, reference, and product-specific parts information. ­ Part I (begins on page 19) covers the following ThinkPad i Series 1400 models: 2611-411, 2611-435, 2611-451, 2611-410, 2611-434, 2611-450, 2611-436-JP Part II (begins on page 105) covers the following ThinkPad i Series 1400 models: 2611-472, 2611-452, 2611-412, 2611-476, 2611-456, 2611-40M, 2611-40A, 2611-49M, 2611-43M, 2611-40T, 2611-49A, 2611-43A, 2611-40C, 2611-49T, 2611-43T, 2611-40H, 2611-49C, 2611-43C, 2611-40K, 2611-49H, 2611-43H, 2611-40F, 2611-49K, 2611-43K, 2611-49F, 2611-47F ­ Important This manual is intended for trained servicers who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing an IBM ThinkPad product, be sure to review the safety information under "Safety Notices (Multi-lingual Translations)" on page 4 and "Safety Information" on page 11. Related Publications