extensa 450.pdf

Maintenance Manual

Extensa tm 450 Series

Notebook Computers

9805725-0001

November 1995

Extensa 450 Series Notebook Computers

Maintenance Manual

TI Part No. 9805725-0001

Original Issue: November 1995

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 Incorporated.

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

judgement 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 Incorporated

P.O. Box 6102, M/S 3255

Temple, Texas 76503

Extensa 450, TravelMate, 5000, 4000M, 4000E, 4000 and BatteryPro are trade-

marks of Texas Instruments Incorporated. The icons in the Windows Notebook and

Startup groups are copyrighted by Texas Instruments Incorporated.

BitCom and BitFax are trademarks of BIT Software, Inc.

Hayes is a registered trademark and SmartModem2400 is a trademark of Hayes Mi-

croComputer Products Inc.

IBM, OS/2, AT PS/2, and VGA are trademarks of International Business Machines

Corporation.

Intel, and IntelDX4 are trademarks of Intel Corporation

Lotus is a trademark of Lotus Development Corporation

MNP is a registered trademark and Microcom is trademark of Microcom Inc.

Microsoft and Windows 95 are trade marks of Microsoft Corporation.

Ethernet is a registered trademark of Xerox Corporation.

NetWare is a registered trademark of Novell, Inc.

UNIX is a registered trademark of American Telephone and Telegraph.

SimulSCAN is a trademark of Cirrus Logic, Inc.

Contents

Preface

Section 1 General Description

1.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Product Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3 International Product Versions. . . . . . . . . . . . . . . . . . . . . . 1-2

1.4 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.4.1 External Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.4.2 Touchpad Pointing Device . . . . . . . . . . . . . . . . . . . . . 1-6

1.4.3 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.4.4 Standard Power Features. . . . . . . . . . . . . . . . . . . . . . 1-8

1.4.5 Wireless Connection With Serial Infrared Port . . . . . . 1-9

1.4.6 Preloaded Software . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.4.7 Notebook Expansion Capabilities . . . . . . . . . . . . . . . . 1-9

1.5 Standard Test Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.6 Notebook Assemblies and Subassemblies. . . . . . . . . . . . . . 1-10

1.6.1 Cover-Display Assembly . . . . . . . . . . . . . . . . . . . . . . 1-11

1.6.2 System Base Assembly . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.7 Extensa 450 Series Notebook Specifications. . . . . . . . . . . . 1-12

1.8 Agency Approvals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Section 2 Installation

2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Unpacking Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 Installing Notebook Options . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3.1 Installing Dual Inline Memory Module(s) . . . . . . . . . . 2-1

2.3.2 Installing PCMCIA Options. . . . . . . . . . . . . . . . . . . . . 2-3

2.3.3 Installing the Port Adapter . . . . . . . . . . . . . . . . . . . . 2-4

2.3.4 Installing the Optional Numeric Keypad . . . . . . . . . . 2-5

2.4 Installing the Battery Pack(s ) . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.5 Installing External Devices . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Contents iii

2.5.1 Installing an External Keyboard/Mouse . . . . . . . . . . . 2-6

2.5.2 Installing External Parallel Printer . . . . . . . . . . . . . . . 2-8

2.5. 3 Installing External Serial Port Device . . . . . . . . . . . . . 2-8

2.5. 4 Installing External VGA Monitor . . . . . . . . . . . . . . . . . 2-10

2.5.5 Installing SIR Devices . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.6 Installing the AC Power Adapter . . . . . . . . . . . . . . . . . . . . 2-11

2.7 Initial System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.8 Configuring the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.9 Making Backups of System Software. . . . . . . . . . . . . . . . . . 2-13

2.10 Loading Application Software . . . . . . . . . . . . . . . . . . . . . . 2-13

Section 3 Operating Instructions

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Notebook Controls and Indicators . . . . . . . . . . . . . . . . . . . . 3-1

3.2.1 LCD Brightness Control . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.2.2 Button Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.2.3 Cover Release Latch . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.2.4 Touch Pad Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.2.5 Keyboard Mode LEDs. . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3 Operating Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.1 Floppy Drive Operating Procedures . . . . . . . . . . . . . . 3-4

3.3.2 Installing/Removing PCMCIA Options . . . . . . . . . . . . 3-4

3.3.3 Computer Hot Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3.4 Responding to Low Battery Conditions. . . . . . . . . . . . 3-5

3.3.5 Minimizing Power Usage . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3.6 Recharging the Battery Packs . . . . . . . . . . . . . . . . . . 3-6

3.3.7 Restoring Missing System Files . . . . . . . . . . . . . . . . . 3-6

3.3.8 Rebuilding the System Software. . . . . . . . . . . . . . . . . 3-6

Section 4 Theory of Operation

4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Notebook Functional Description . . . . . . . . . . . . . . . . . . . . 4-1

4.2.1 Processor/Memory Subsystems . . . . . . . . . . . . . . . . 4-1

4.2.2 I/O Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.2.3 Video Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

iv Contents

4.2.4 Hard Disk Subsystem . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.2.5 Floppy Diskette Drive Subsystem. . . . . . . . . . . . . . . . 4-9

4.2.6 PCMCIA Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4.2.7 Power Subsystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Section 5 Troubleshooting Procedures

5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Overview of Fault Isolation Process . . . . . . . . . . . . . . . . . . 5-1

5.3 Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.3.1 Troubleshooting a Power Supply Problem . . . . . . . . . 5-3

5.3.2 Troubleshooting a Display Problem . . . . . . . . . . . . . . 5-5

5.3.3 Fault Isolation Using Selftest . . . . . . . . . . . . . . . . . . . 5-5

5.3.4 PCMCIA Modem Problems. . . . . . . . . . . . . . . . . . . . . . 5-5

5.3.5 Fault Isolation Using Diagnostics . . . . . . . . . . . . . . . . 5-6

Section 6 Field Service

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.1 Cleaning the Computer . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.2 Protecting the Disk Drives . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.3 Handling the Computer Battery Pack. . . . . . . . . . . . . 6-2

6.2.4 Restoring System Software. . . . . . . . . . . . . . . . . . . . . 6-2

6.3 Required Tools and Equipment . . . . . . . . . . . . . . . . . . . . . 6-3

6.4 Notebook Field-Replaceable Parts and Assemblies. . . . . . . . 6-3

6.4.1 Cover-Display Assembly . . . . . . . . . . . . . . . . . . . . . . 6-3

6.4.2 System Base Assembly . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.5 FRU Removal and Replacement Procedures . . . . . . . . . . . . 6-6

6.5.1 Removing/Replacing the Notebook Battery Pack . . . . . 6-6

6.5.2 Removing/Replacing PCMCIA Options . . . . . . . . . . . . 6-7

6.5.3 Removing/Replacing the Floppy Drive . . . . . . . . . . . . 6-7

6.5.4 Removing/Replacing the Hard Drive . . . . . . . . . . . . . 6-7

6.5.5 Removing/Replacing the Keyboard Assembly . . . . . . . 6-8

6.5.6 Removing/Replacing the Heat Sink . . . . . . . . . . . . . . 6-8

6.5.7 Removing/Replacing Memory Modules (DIMMS) . . . . 6-9

6.5.8 Removing and Replacing the Cover-Display Assembly 6-10

Contents v

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