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S10L-9624-00 IBM Mobile Systems ThinkPad 380Z (2635) Computer Hardware Maintenance Manual August 1998 Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page 100. First Edition (August 1998) 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 disclaimer 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 to the products or the programs described in this publication at any time. It is possible that this publication may contain references to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country. 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 1998. All rights reserved. Note to U.S. 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. ThinkPad 380Z Read This First . . . . . . . . . . . . . . . Screw Tightening Information . . . . . . . Product Overview . . . . . . . . . . . . . . Checkout Guide . . . . . . . . . . . . . . Audio Checkout . . . . . . . . . . . . . Diskette Drive Checkout . . . . . . . . . Fan Checkout . . . . . . . . . . . . . . Keyboard or Auxiliary Input Device Checkout Memory Checkout . . . . . . . . . . . . Power Systems Checkout . . . . . . . . Status Indicator Checkout . . . . . . . . System Board and CPU Card Checkout . . TrackPoint Checkout . . . . . . . . . . . Optional Device Checkout . . . . . . . . . . Port Replicator Checkout . . . . . . . . . External Monitor Self-Test . . . . . . . . Power Management Features . . . . . . . . Standby Mode . . . . . . . . . . . . . . Suspend Mode . . . . . . . . . . . . . Hibernation Mode . . . . . . . . . . . . Port Replicator Power Overload . . . . . Symptom-to-FRU Index . . . . . . . . . . . Numeric Error Codes . . . . . . . . . . . Beep Symptoms . . . . . . . . . . . . . Function-Related Symptoms . . . . . . . Indicator-Related Symptoms . . . . . . . Infrared-Related Symptoms . . . . . . .