
Before using this information and the  product it supports,
be sure to read the general  information under “Read This
First” on page 19.
First Edition (November 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 CORPO-
RATION 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; there-
fore, 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 improve-
ments or changes in 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 pro-
grams), 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 Corpo-
ration 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.
 Important 
This manual is intended for trained  servicers who are
familiar with ThinkPad products. Use this  manual
along with the advanced diagnostic tests  to trouble-
shoot 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.