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Maintenance Manual
Extensa
TM
900 Series
Notebook Computers
9813715-0001
December 1996
Copyright © 1996 Texas Instruments
All Rights Reserved
Extensa
TM
900 Series Notebook Computers
Maintenance Manual
TI Part No. 9813715-0001
Original Issue: December 1996
Changes may be made periodically to the information in this publication. Such
changes will be incorporated in new editions of this manual.
No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical,
photocopy, recording, or otherwise, without the prior written permission of
Texas Instruments.
The equipment, as well as the programs that TI has created to use with them,
are tools that can help people better manage the information used in their
business; but tools — including TI products — cannot replace sound judge-
ment nor make the manager's business decisions.
Consequently, TI cannot warrant that its products are suitable for any specific
customer application. The manager must rely on judgement of what is best for
his or her business.
Address all correspondence regarding orders to:
Texas Instruments
P.O. Box 6102, M/S 3255
Temple, Texas 76503
Extensa is a trademark of Texas Instruments. The icons in the Windows Notebook and
Startup groups are copyrighted by Texas Instruments.
IBM and PS/2 are registered trademarks, and OS/2 is a trademark of International
Business Machines Corporation.
Microsoft, Windows and MS-DOS are registered trademarks of Microsoft Corporation..
Intel and Pentium are registered trademarks of Intel Corporation.
Cirrus is a registered trademark of Cirrus Logic, Inc.
Ethernet is a registered trademark of Xerox Corporation.
IRDA is a trademark of Infra Red Data Association.
Sound Blaster is a trademark of Creative Technology, Ltd.
SimulSCAN is a trademark of Cirrus Logic, Inc.
SCSI is a registered trademark of Security Control Systems, Inc.
Synaptics is a registered trademark of Synaptics, Inc.
Phillips is a tegistered trademark of Phillips screw Company.
TranXit is a trademark of Puma Technology, Inc.
Cyrix is a registered trademark of Dakota Systems, Incorporated.
CHIPS is a registered trademark of Chips Technologies, Inc.
AudioRack is a trademark of ESS Technology, Inc.
Preface
Introduction
This manual provides installation, operation and servicing data for the Extensa
TM
900
Series Notebook Computers.
Intended Audience
This manual is primarily intended for use by qualified service technicians but contains
information useful to non-technical users.
Contents
This manual contains six sections and one appendix that are common to all Extensa
900 Series Notebook Computers (differences described as they are covered):
¨
Section 1: General Description -
Introduces the main features of the Extensa
900 Series Notebook Computers; identifies all options, provides physical and
electrical specifications.
¨
Section 2: Installation -
Describes how to unpack, install options and begin
using the notebook.
¨
Section 3: Operating Instructions
- Describes the notebook computer
operating controls and indicators and basic operating procedures required to
support maintenance operations.
¨
Section 4: Theory of Operation
- Provides a block diagram level theory of
operation for the Extensa Series Notebooks.
¨
Section 5: Troubleshooting Procedures
- Provides troubleshooting
procedures for the notebook computer series.
¨
Section 6: Field Service
- Provides preventive and corrective maintenance
procedures for the notebook computer series including FRU removal/
replacement procedures.
¨
Appendix A: Notebook Schematic Diagrams
- Provides schematic diagrams
for the Extensa 900 Series Notebook Computer.
¨
Appendix B: MPB Schematic Diagrams
- Provides schematic diagrams for the
Extensa 900 Series Mobile Productivity Base.
Preface
ix
 Other Manuals About the System
The following documents provide additional information related to the Extensa
Notebook Computer Series:
¨
Extensa Series Notebook Computers Users Guide
- Contains user reference
information for the Extensa 900 Series Notebook Computers.
¨
PC-Doctor Help
and
Technical Reference
(online)
Ordering Parts and Supplies
To order a copy of any TI publication or to order option kits, spare parts or supplies for
your system, contact your TI reseller:
Telephone Toll-free:
1-800-TI TEXAS
.
x
Preface
 Contents
Paragraph
Page
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
Intended Audience- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
Contents - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -viii
Ordering Parts and Supplies - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -viii
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1
Product Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
Internal LCD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
External CRTs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
Display Hot Key Sequences - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-4
Software Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-4
- - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-5
900 Series Connectivity Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-5
- - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-7
Memory Expanson - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-7
PCMCIA Card Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-7
Mobile Productivity Base Option - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-7
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-10
- - - - - - - - - - - - - - - - - - - - - - - - - 1-11
- - - - - - - - - - - - - - - - - - - - - - - - - - 1-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-12
Standard Test Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-12
Power On Self Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-13
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-14
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-17
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
Unpacking Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
- - - - - - - - - - - - - - - - - - - - 2-2
Installing Main Memory Expansion (Optional) - - - - - - - - - - - - - - - - - - - - 2-2
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-3
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-4
Contents
iii
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