Text preview for : ext510sg.pdf part of Acer Extensa 510 Extensa 51x Series Notebook Computers



Back to : ext510sg.pdf | Home

Maintenance Manual

Extensa 51x Series Notebook Computers
9811755-0001
April 1996

TM

Copyright (©) 1996 Texas Instruments Incorporated All Rights Reserved -- Printed in U.S.A. Extensa 51x Series Notebook Computers Maintenance Manual TI Part No. 9811755-0001 Original Issue: April 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 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 judgment 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 judgment 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 is a trademark of Texas Instruments. The icons in the Windows Notebook and Startup Groups are copyrighted by Texas Instruments. Intel and Pentium are registered trademarks of Intel Corporation. PS/2 is a registered trademark, and IBM, AT and VGA are trademarks of International Business Machines Corporation. Microsoft and Windows are registered trademarks of Microsoft Corporation. IRDA is a trademark of Infra Red Data Association. SimulSCAN and Cirrus are trademarks of Cirrus Logic, Inc.

Contents
Preface 1 General Description
1.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 . . . . 1.3 . . . . Product Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 International Product Versions . . . . . . . . . . . . . . . . . 1-2

1.4 . . . . Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 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 . . . . . . . . . . . . . . . . . . . 1-9 1.4.5 . . . Preloaded Software. . . . . . . . . . . . . . . . . . . . . . . . 1-9 1.4.6 . . . Notebook Expansion Capabilities . . . . . . . . . . . . . 1-10 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 . . . . . . . . . . . . . . . . . . . . 1-12 1.7 . . . . Extensa 51x Series Notebook Specifications . . . . . . . 1-12

1.8 . . . . Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

2

Installation
2.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.2 . . . . 2.3 . . . . Unpacking Instructions . . . . . . . . . . . . . . . . . . . . . . 2-1 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 Optional Numeric Keypad . . . . . . 2-4

2.4 . . . . Installing the Battery Pack(s) . . . . . . . . . . . . . . . . . . 2-4 2.5 . . . . Installing External Devices . . . . . . . . . . . . . . . . . . . . 2-5

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

Contents

iii

2.5.2 . . . Installing External Parallel Printer . . . . . . . . . . . . 2-7 2.5.3 . . . Installing External Serial Port Device . . . . . . . . . 2-8 2.5.4 . . . Installing External VGA Monitor. . . . . . . . . . . . . . 2-9 2.5.5 . . . Installing External Microphone . . . . . . . . . . . . . . 2-10 2.5.6 . . . Installing External Audio Input Devices . . . . . . . . 2-10 2.5.7 . . . Installing External Audio Output Devices. . . . . . . 2-10 2.6 . . . . Installing the AC Power Adapter . . . . . . . . . . . . . . . 2-10

2.7 . . . . Initial System Checkout . . . . . . . . . . . . . . . . . . . . . . 2-11 2.8 . . . . Configuring the System . . . . . . . . . . . . . . . . . . . . . . . 2-11 2.9 . . . . Making Backups of System Software . . . . . . . . . . . . . 2-11 2.10 . . . Loading Application Software . . . . . . . . . . . . . . . . . . 2-11

3

Operating Instructions
3.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 . . . . Notebook Controls and Indicators . . . . . . . . . . . . . . . 3-1 3.2.1 . . . Button Switches. . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2.2 . . . Cover Release Latch . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2.3 . . . Touchpad Controls. . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2.4 . . . Keyboard Mode LEDs . . . . . . . . . . . . . . . . . . . . . . 3-3 3.3 . . . . Operating Procedures . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.1 . . . Floppy Drive Operating Procedures . . . . . . . . . . . 3-3 3.3.2 . . . Installing/Removing PCMCIA Options . . . . . . . . . 3-4 3.3.3 . . . Computer Hot Keys . . . . . . . . . . . . . . . . . . . . . . . 3-4 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. . . . . . . . . . . . . . . . 3-5 3.3.7 . . . Restoring Missing System Files . . . . . . . . . . . . . . 3-6 3.3.8 . . . Rebuilding the System Software . . . . . . . . . . . . . . 3-6

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 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

iv Contents

4.2.3 . . . Video Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 4.2.4 . . . Hard Disk Subsystem . . . . . . . . . . . . . . . . . . . . . 4-5 4.2.5 . . . Floppy Diskette Drive Subsystem . . . . . . . . . . . . . 4-5 4.2.6 . . . PCMCIA Subsystem . . . . . . . . . . . . . . . . . . . . . . . 4-6 4.2.7 . . . Power Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

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 Self Test . . . . . . . . . . . . . . . 5-5 5.3.4 . . . PCMCIA Modem Problems . . . . . . . . . . . . . . . . . . 5-5 5.3.5 . . . Fault Isolation Using Diagnostics . . . . . . . . . . . . 5-6

6

Field Service
6.1 . . . . 6.2 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 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 . . . Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 6.4.2 . . . System Base Assembly . . . . . . . . . . . . . . . . . . . . . 6-5 6.5 . . . . Notebook Subassembly Removal and . . . . . . . Replacement Procedures . . . . . . . . . . . . . . . . . . . . . 6-7 6.5.1 . . . Removing/Replacing the Notebook Battery Pack . 6-7 6.5.2 . . . Removing/Replacing the Keyboard Assembly . . . . 6-8 6.5.3 . . . Removing/Replacing the Heat Sink . . . . . . . . . . . 6-9 6.5.4 . . . Opening/Replacing the Upper Case Assembly . . . 6-10 6.5.5 . . . Removing/Replacing the Floppy Disk Assembly . 6-11 6.5.6 . . . Removing/Replacing the Hard Drive . . . . . . . . . . 6-11 6.5.7 . . . Removing/Replacing DIMM Modules . . . . . . . . . . 6-13

Contents

v

6.5.8 . . . Removing and Replacing the Display Assembly . . 6-13 6.5.9 . . . Removing and Replacing the Inverter Board . . . . . . . or Contrast Board . . . . . . . . . . . . . . . . . . . . . . . . 6-13 6.5.10 . . Removing/Replacing the Touchpad Assembly . . . 6-14 6.5.11 . . Removing/Replacing the Smart Battery Board . . . . . . . Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15 6.5.12 . . Removing/Replacing the Charger/Power Supply . . . . . . . Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6-15 6.5.13 . . Removing/Replacing the Main Board . . . . . . . . . . 6-15 6.5.14 . . Removing/Replacing the Pentium Chip . . . . . . . . 6-16

A Self Test Error Messages
A.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

B PC-Doctor Diagnostics
B.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 B.2 . . . . Starting PC-Doctor . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 B.3 . . . . Mouse Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 B.4 . . . . PC-Doctor Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 B.4.1 . . . Online Help (?) . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 B.4.2 . . . Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 B.4.3 . . . Interactive Tests Menu . . . . . . . . . . . . . . . . . . . . . B-3 B.4.4 . . . Hardware Info Menu . . . . . . . . . . . . . . . . . . . . . . B-4 B.4.5 . . . Utility Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4 B.5 . . . . Quitting PC-Doctor . . . . . . . . . . . . . . . . . . . . . . . . . . B-5 B.6 . . . . Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

vi Contents

Preface
Introduction
This manual provides installation, operation and servicing data for the ExtensaTM 51x 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 multiple reference appendices including:

· · · · · · · ·

Section 1: General Description -- Introduces the main features of the notebook family; provides a list of physical and electrical specifications. Section 2: Installation -- Describes how to unpack, install options and cable up the notebook computer in a desktop environment. Section 3: Operating Instructions -- Describes the notebook operating controls and indicators and modes of operation. Section 4: Theory of Operation -- Describes detailed theory of operation for Extensa Series notebooks. Section 5: Troubleshooting -- Provides troubleshooting procedures for the Extensa 51x Series notebooks. Section 6: Field Service -- Provides corrective maintenance procedures for the notebook computer. Appendix A: Self Test Error Messages Appendix B: PC-Doctor Reference Data

Preface vii

Other Manuals About the System
The following documents provide additional information related to the Extensa 51x Series:

· · ·

Extensa Series Notebook Computer User's Reference Manual contains reference information regarding the Extensa Series Notebook Computer software including the TI custom utilities. Windows® 95 Help (online) 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 or: Telephone Toll-free: 1-800-TI TEXAS

viii Preface

1 General Description
1.1
Introduction
This manual contains field and factory level servicing information for the Texas Instruments ExtensaTM 51x Series of Notebook Computers (Figure 1-1). This section provides a general overview and specifications for the Extensa 51x Series Notebook Computers.

Figure1-1 Extensa 51x Series Notebook Computer

1.2

Product Models

The two initial offerings in the 51x Series are differentiated by the software installed on the system at the factory. The Model 510 contains Windows® 95 and the Model 515 includes Windows 95 and a variety of applications as summarized in Table 1-1. Each model may contain either the 540 million byte hard disk drive (-00xx part number suffix) or 810 million byte hard drive (-01xx part number suffix).

General Description 1-1

Table 1-1 Extensa 51x Series Notebook Computers

Model 510 ·
U.S. Version Windows 95 or Windows for Workgroups Non U.S. Versions Windows 95

Model 515
Windows 95 Plus Microsoft Works, Quicken SE, Lotus Organizer, and Microsoft Entertainment Pack

·

1.3

International Product Versions

The Extensa 51x Series Notebooks are available in one of 15 domestic and international configurations as listed in Table 1-2. Table 1-2 Notebook Domestic/International Configurations

Configuration
Domestic UK German French Spanish Swiss/German Italian Portuguese Western European

P/N Suffix
-0001 -0002 -0003 -0004 -0005 -0006 -0007 -0008 -0009

Configuration
Swedish Swiss/French Danish Norwegian Finish Belgium Austrian Asia Pacific Latin American Chinese

P/N Suffix
-0010 -0011 -0012 -0013 -0014 -0015 -0016 -0017 -0018 -0019

1.4

Product Overview

All members of the Extensa 51x Series are high performance notebooks powered by the 100 MHz PentiumTM processor and Windows 95 Operating System software. As a standard feature, all members of the Extensa 51x family also contain the following features:

· · ·
1-2

8 MB of EDO RAM memory (user-expandable to 40 MB) 128 bytes of battery-backed up CMOS RAM 1 MB of video RAM

General Description

· · · · · · · · · ·

540 or 810 Million Byte Hard Drive (user replaceable) Support for two PCMCIA Type I or II options or one Type III PCMCIA option card Ergonomic keyboard with palm rest (2.7 mm travel); built-in touchpad pointing device Most standard external device interfaces including serial, parallel, PS/2®, and external VGATM. 3.5-inch, 1.44 MB Floppy Drive 10.4 inch Dual Scan Color LCD AC Adapter with autosensing (100 VAC to 240 VAC, 50 to 60 Hz); 34 Watts of DC output power 10.8 Volt, 2400 mAH capacity, Nickel-Metal Hydride (NiMH); Standard Duracell DR35 battery pack Built-in monaural speaker with ESS1688 sound solution Three audio jacks: Line-In, Line-Out, and Microphone-In.

General Description 1-3

Cover Release Button Five Status LEDs Primary Battery Pack (Accessible from Right Side) Standby/Suspend Button Speaker Setup Button Power On/Off Button Type I /11 or III PCMCIA Slot Touchpad Select Buttons Touchpad Pointing Device

Hard Drive (Accessible from Underneath)

Audio Line/Mic Jacks

Hard Drive Cover

HDD Release Latches

VGA, Serial and Parallel Connector Door PS/2 Connector Power In Connector

Primary Battery Cover

Floppy Drive Assembly

Figure 1-2 Extensa 51x Series Features

1-4

General Description

1.4.1

External Ports

As shown in Figure 1-3, the notebook computer contains the following external ports:

· · · · · ·

9-Pin Serial Port for attaching any RS-232 type serial device to the Notebook 25-Pin Parallel Port for attaching bidirectional parallel devices Audio Line-In, Line-Out, and Microphone-In 15-Pin External VGA Monitor Port for attaching an external monitor 6-Pin PS/2 Port to attach an external Keyboard or Mouse AC Adapter Connector for attaching the AC Adapter to the notebook

Audio Line Output External Microphone Input Serial Port AC Adapter Connector External VGA Port Parallel Port Audio Line Input

External PS/2 Port (Mouse/Keyboard Port)

Figure 1-3 Notebook External Ports

General Description 1-5

1.4.2

Touchpad Pointing Device

All members of the Extensa family feature a built-in touchpad pointing device located near the center of the keyboard palmrest. With light pressure, the cursor can quickly be positioned to the desired point; a quick double tap on the touchpad and you have selected an object. Two select buttons (switches) are located along the front edge of the notebook .

T o u c h p ad Pointing Device

Select Buttons

Figure1-4 Extensa Touchpad

1.4.3

Keyboard

The Extensa Series Keyboard is an IBMTM enhanced-type keyboard with the standard character and function keys plus 12 programmable function keys (F1 through F12). Using the Special Function (Fn) key which assigns multiple functions to keys, the keyboard can emulate the IBM 101/102 keyboards. The keyboard features a special keyboard interface chip that can detect multiple levels of key input (good simulation of N-key rollover for up to 10 keys). Some of the major features of the keyboard include:

·
1-6

Integrated numeric keypad

General Description

· · ·

"Inverted T" Cursor Control Key layout

The notebook keyboard is available in the following versions: U.S. English Keyboard, TI Part No. 9811398-0001- This version (also known as the domestic version) is generally used in the United States and Canada. International versions include: · · · · · · · · · · · · United Kingdom Keyboard, TI Part No. 9811398 -0002 German Keyboard, TI Part No. 9811398 -0003 French Keyboard, TI Part No. 9811398 -0004 Spanish Keyboard, TI Part No. 9811398 -0005 Swiss Keyboard, TI Part No. 9811398 -0006 Italian Keyboard, TI Part No. 9811398 -0007 Portuguese Keyboard, TI Part No. 9811398 -0009 Swedish Keyboard, TI Part No. 9811398 -0010 Denmark Keyboard, TI Part No. 9811398 -0012 Norwegian Keyboard; TI Part No. 9811398 -0013 Belgium Keyboard, TI Part No. 9811398 -0014 Finish Keyboard, TI Part No. 9811398 -0015

n

Note: The Extensa Series Notebook Computer User's Reference Manual contains descriptions of keyboard special function keys. A six-pin Mini-DIN connector can attach to either an external PS/2 keyboard (or 101 Keyboard via an adapter), PS/2 Mouse, or the optional PS/2 Numeric Keypad.

General Description 1-7

E sc

F1

F2

F3

F4

F5

F6

NumLock

F7

F8

PrtSc

SysRq

F9

F10

F11
Pause

F12
Break

ScrLock

PgDn

Pg Dn

Inser t

Delet e

1 Q

@ 2
W A

%

3 E

4 R

5 T F

^ 6
Y G H B

& 7
7

8
8

9
9

0 O
6

U
4

I
5

P

{
[

}
]

Ca ps Lock Shift

S X

D

J
1

K
2

L
3

Enter

Z

C

V

N

M
0 0
Home

Shift

Fn

C tr l

Alt

End

Figure1-5 Extensa Keyboard

1.4.3.1

Controls and Indicators

As shown in Figure 1-6, Extensa Series Notebook Computers contain a set of three buttons (switches) and five LED displays just above the keyboard including:

· · · ·

Power, Setup, and Standby/Suspend Buttons (Switches) Sleep Mode Indicator. This LED lights when the notebook is in Sleep Mode. Hard Drive Activity Indicator. This LED lights when the notebook is accessing the hard drive (read or write). Num Lock indicator. This LED lights when you press the NumLk key to toggle on the numeric keypad lock function. When the LED is On, the embedded numeric keyboard keys generate ATTM keypad characters and functions when pressed in conjunction with the Shift key. When the indicator is Off, pressing the Fn key with the appropriate keys provides cursor movement, paging and other functions in the normal mode. Caps Lock indicator. This LED indicates that the keyboard is locked in the uppercase mode. To switch to the lowercase mode, press the Caps Lock key. Scroll Lock indicator. This LED lights to indicate that the keyboard is locked in the scroll mode. Standby Indicator. Lights when Notebook is in Standby mode.

· · ·

1-8

General Description

Caps Lock Num Lock Hard Drive Activity Sleep Mode

Scroll Lock

Status LEDs

Touchpad Pointing Device

Standby/Suspend Button Setup Button

Charging LED

Power LED Power On/Off Button

Touchpad Select Buttons

Figure1-6 Extensa Series Controls and Indicators

1.4.4

Standard Power Features

Notebook power for the Extensa 51x Series Notebook Computers is provided by an AC Adapter and a rechargeable 10.8 V, 2400 mAh Duracell DR35 nickel metal hydride (NiMH) battery pack that installs in a bay near the front of the notebook (right side). All members of the Extensa 51x family feature a powerful Power Management subsystem (hardware and software) that provides longer portable operation and protection of files during low battery conditions.

1.4.5

Preloaded Software

All members of the Extensa 51x Notebook family are preloaded with the Windows 95 Operating System. In addition, the Extensa Model 515 is shipped from the factory with the following software application packages installed on the hard drive:

General Description 1-9

· · · ·

Microsoft Works Quicken SE Lotus Organizer Microsoft Entertainment Pack No. 4

1.4.6
· · · · · · ·

Notebook Expansion Capabilities

Expansion capabilities built into the Extensa notebook series include: User installable expansion RAM memory (to a maximum of 40 MB); notebook accepts either fastpage mode or EDO RAM modules. A Cable-Connect PS/2 Numeric Keypad option, TI Part No. 2581381-0001, can be attached to the external PS/2 Port. A parallel device can be attached to the notebook's external 25-pin parallel port (EPP/ECP compatible). Serial RS-232 Port for attaching any serial device External VGA Port for driving an external color monitor Third Party External PS/2 keyboard (or external mouse) Three audio jacks (line-in/out and microphone in)

1.5

Standard Test Features

The Extensa Series Notebook Computers use modular design and built-in test features to reduce the mean time to repair. A power on self test automatically verifies the operational state of the primary circuits and a powerful suite of diagnostic tests are available to further test selected parts of the system.

1.6

Notebook Assemblies and Subassemblies

The Extensa Series Notebooks are modular in design and can be disassembled for maintenance purposes using a standard set of flat-bladed, Phillips-head and hexagonal screwdrivers. The major assemblies that comprise a typical notebook in the Extensa family are shown in Figure 1-7 and briefly described in the following paragraphs.

1-10

General Description

Memory Expansion Sockets

Floppy Drive Assembly Charger/Power Supply Board Speaker Assembly Top Case Assembly To uc hPa d Assembly

Display Assembly

LED/Switch Board Assembly Main Board Assembly

Battery Board

Pentium CPU

Hard Drive Cover

Hard Drive Assembly Hard Drive O uter C ov er Battery End Co ve r

Battery P ac k Floppy Drive Assembly

Bottom View

Figure 1-7 Notebook Assemblies

1.6.1

Cover-Display Assembly

The Cover-Display Assembly contains the LCD screen and associated high voltage power supply and video circuitry. The Cover-Display Assembly contains several field-replaceable components including:

· · · ·

LCD Assembly Cable Assemblies Inverter Board Contrast Board General Description 1-11

The Display Assembly attaches to the System Base Assembly through four top mounted screws.

1.6.2

System Base Assembly

As shown in Figure 1-7, the majority of the notebook's field-replaceable units (FRUs) are located in the system base assembly. These FRUs include:

· · · · · · · · · · ·

Main Board Assembly Hard Disk Drive Assembly Up to two Dual Inline Memory Modules Floppy Drive Assembly Power Supply Board Assembly Battery Board Assembly Battery Pack Assembly Top Case Assembly Touchpad Assembly Keyboard Assembly (removed in Figure 1-7 for clarity) Battery Board Assembly

1.7

Extensa 51x Series Notebook Specifications

Specifications for the Extensa 51x Series Notebooks are provided in Table 1-3.

1-12

General Description

Table 1-3 Extensa 51x Notebook Features

Specifications
Memory:

Model 510

Model 515

Standard: Maximum
Display LCD Type: Simultaneous LCD/Ext. VGA Video RAM Size: Video Bus

8 MB 40 MB

8 MB 40 MB

10.4" Dual Scan Color Yes 1 MB VLBUS with Graphics Accelerator

10.4" Dual Scan Color Yes 1 MB VLBUS with Graphics Accelerator

Keyboard/Point Device

Ergonomic Keyboard Built-In Touchpad
Storage

Yes Yes

Yes Yes

Floppy Drive: Hard Drive:
Interfaces

3.5", 1.44 MB 540 or 810 Million Byte

3.5", 1.44 MB 540 or 810 Million Byte

Serial (RS-232) Port Parallel Port (EPP/ECP), Yes External VGA Port External PS/2 Port
PCMCIA Support Software

Yes Yes Yes Yes Type I/II/III U.S. Version: Dual Load Non-U.S. Versions: Windows 95 only (International Load) 297 mm (L) x 45.5 mm (H) x 215 mm (W) 11.7" (L) x 1.7" (H) x 8.2" (W) Approx. 5.9 lbs. (2.68 kg)*

Yes Yes Yes Yes Type I/II/III Windows 95, plus application software (Refer to Table 1-1) 297 mm (L) x 45.5 mm (H) x 215 mm (W) 11.7" (L) x 1.7" (H) x 8.2" (W) Approx. 5.9 lbs. (2.68 kg)*

Physical Characteristics

Dimensions: Weight

* Weight specifications do not include AC Adapter

General Description 1-13

1.8
· · · · · · ·

Agency Approvals

All Extensa 51x Series products meet the following standards: Underwriter's Lab (UL) Standard 1950 (safety) Underwriter's Lab (UL), CN Listed (C22.2 No. 950) (safety) EN60950, TUV Rheinland (safety) FCC CFR 47, Part 15, Subpart J, FCC Level B (EMI/RFI ) Canadian Department of Communications (DOC) ICES Class B (EMI/RFI) CISPR-22/EN55022 Class B (EMI/RFI) CE Mark

1-14

General Description

2 Installation
2.1
Introduction
This section contains unpacking and preparation for use instructions for the Extensa 51x Series Notebook Computers.

2.2

Unpacking Instructions

The packaging diagram for the notebook computer is shown in Figure 2-1. Unpack the computer using the following instructions: 1. 2. 3. 4. Carefully cut the tape that seals the top flap of the shipping carton. Remove the computer and the accessories from the main shipping carton. Remove all protective coverings from the computer. Remove the holding tape and open up the accessory box; remove the contents.

n

Note: Save the shipping containers and packaging for later reuse.

2.3

Installing Notebook Options

If you have no options to install at this time, skip to Paragraph 2.3. Otherwise, continue with Paragraph 2.3.1.

2.3.1

Installing Dual Inline Memory Module(s)

n c

Note: If not installing RAM Expansion option at this time, skip to the next paragraph.

Caution: The Dual Inline Memory Module contains components that are sensitive to static electricity. When handling the module and the internal parts of the computer, protect against static electricity by using wrist or ankle grounding straps and grounded working mats. When moving or storing items, use the anti-static bags supplied with the items.

1. 2.

Ensure that the notebook is powered off and that the AC Adapter and internal battery pack is removed from the notebook. Remove the DIMM module(s) from its shipping container. Installation 2-1

3. 4. 5.

Release the Keyboard by pulling the keyboard release tabs forward (tabs are located underneath the Ctrl and right arrow keys). Disengage the Keyboard using a straight blade screwdriver and gently lifting up along the front edge of the keyboard. Using the back edge of the keyboard as a hinge, lift the front edge of the keyboard up and lay it against the display.

6. Insert the edge of the DIMM Board into the lower connector (refer to Figure 2-1). Use a rocking motion to fully insert the module. Push downward on each side of the DIMM module until it snaps in place. 7. 8. Repeat the procedure in Step 6 (upper connector) to install the second DIMM module. Replace the keyboard assembly and any other components removed in Step 1.

This completes the expansion memory module installation procedure.

1 Slide Keyboard Release Tabs toward front of notebook.

Using a small flat blade screwdriver, gently pry keyboard up along the front edge.

2 Tilt the keyboard back against the display Insert the SIMM modules into the two Main Board memory connectors

Figure 2-1

Installing Additional Memory

2-2 Installation

2.3.2

Installing PCMCIA Options

The Notebook has provisions for two Type I/Type II or one Type III PCMCIA option card. Use the following procedure to install a PCMCIA option: 1. 2. 3. 4. Review the installation instructions supplied with the PCMCIA option card(s). Open the PCMCIA compartment cover on the left side of the notebook. To insert a PCMCIA card, align the card with the socket and slide the card into the socket until it locks into place. To eject a PCMCIA card, first ensure that the notebook is not accessing the memory card or device. Under Windows 95, go to the Control Panel, PC Card, and direct the card to stop before removing card.

PCMCIA Connector Door

Figure 2-2

Installing PCMCIA Options

Installation 2-3

2.3.3

Installing the Optional Numeric Keypad

An optional numeric keyboard can be attached to the notebook via the notebook PS/2 connector as shown in Figure 2-3.

External PS/2 Port (Mouse/Keyboard Port)

External Numeric Keypad Option
Figure 2-3 Installing the Numeric Keypad option

2.4

Installing the Battery Pack(s)

The standard configuration of the Extensa Notebook is equipped with a single battery pack that is inserted from the front right side of the computer. To remove or replace the battery pack, follow the steps below. 1. 2. Power off the notebook, being sure to save your data first. Locate the battery door (right side of notebook near the front). Press the battery door inward and slide the door toward the front of the notebook; remove the battery door. Insert a new or recharged battery pack into the battery compartment bay. Make sure that the contacts are facing up and to the rear of the compartment. Check the label (facing up when inserted) indicating the positive and negative poles of the battery.

3.

2-4 Installation

c

Caution: There is danger of explosion if the battery is incorrectly replaced. Replace the battery only with the same or an equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

2.5

Installing External Devices

Most external devices connect to the Notebook via the connectors on the rear of the notebook (refer to Figure 2-4 for port assignments).

Audio Line Output External Microphone Input Serial Port AC Adapter Connector External VGA Port Parallel Port Audio Line Input

External PS/2 Port (Mouse/Keyboard Port)

Figure 2-4

Extensa Port Assignments

Installation 2-5

2.5.1

Installing an External Keyboard/Mouse

As shown in Figure 2-5, the notebook has provisions for two external PS/2 compatible devices (keyboard, mouse, etc.) that may be attached to the notebook. The pinouts for the 6-pin Mini-DIN connectors are also provided in Figure 2-6.

Figure 2-5

PS/2 Port Assignments/Pinouts

To install an external keyboard or external PS/2 mouse on the notebook, use the following procedure: 1. 2. 3. 4. Ensure that the notebook is powered off. Locate the external PS/2 port at the rear of the notebook (refer to Figure 2-5). Attach the PS/2 cable from your mouse and/or keyboard cable to the PS/2 port. Power on any other peripheral devices you may have connected to the notebook, and then power up the notebook.

2-6 Installation

2.5.2

Installing External Parallel Printer

The Notebook is equipped with a bidirectional, ECC/EPP compatible, 25-pin parallel printer port. The connector pinouts and connector location are shown in Figure 2-6. If you will be using a parallel interface, connect the 25-pin male connector of your printer cable to the 25-pin female parallel port on your notebook. Refer to the manual which accompanied your printer for instructions on configuring your operating environment

Figure 2-6

Parallel Port Location/Pinouts

Installation 2-7

2.5.3

Installing External Serial Port Device

The notebook contains an RS-232 serial port with a male DB-9 connector as shown in Figure 2-7. The serial ports are used to interconnect such devices as:

· · ·

External Modem Serial Printer Any device that uses an RS-232 interface

To connect a printer to the notebook, ensure that both the notebook and the printer are turned off.

c

Caution: Never connect a parallel device to a serial port or a serial device to a parallel port or video port; this may cause damage to the Notebook and/or peripheral device. If you are uncertain of what type connector the external device has, refer to the technical manual for the external device.

SERIAL PORT PINOUTS PIN 1 2 3 4 5 6 7 8 9 SIGNAL DCD (CARRIER DETECT) RXD (RECEIVE DATA) TXD TRANSMIT DATA) DTR (DATA TERMINAL READY) GND (GROUND) DSR (DATA SET READY) RTS (REQUEST TO SEND) CTS (CLEAR TO SEND) RI (RING INDICATOR)

1 6

2 7

3 8

4 9

5

Figure 2-7

Serial Port Location/Pinouts

2-8 Installation

2.5.4

Installing External VGA Monitor

The notebook is capable of driving both its internal LCD display and an external VGA monitor (LCD only, simultaneous, or VGA only). The external monitor connector pinouts and connector locations are shown in Figure 2-8. To install an external monitor with the notebook, use the following steps: 1. 2. 3. Ensure that both the notebook and the external monitor are turned off. Locate the 15-pin female VGA port on the rear of the notebook. Attach the appropriate end of the monitor cable to the VGA port on your notebook. If the monitor cable connectors have retaining screws, tighten them down. If necessary, connect the monitor power cable to the monitor, and plug the monitor power cable into an electrical outlet. Power on the monitor, as well as any other peripheral devices connected to the notebook; then power up the notebook.

4. 5.

5 10 15

4 9

3 8

2 7

1 6 11

14

13

12

EXTERNAL VGA CONNECTOR PINOUTS PIN 1 2 3 4 5 6 7 8 9 10 11, 12 13 14 15 SIGNAL NAME RED VIDEO GREEN VIDEO BLUE VIDEO NOT USED GROUND RED RETURN GREEN RETURN BLUE RETURN NOT USED GROUND NOT USED HORIZONTAL SYNC VERTICAL SYNC NOT USED DIRECTION OUTPUT OUTPUT OUTPUT

INPUT INPUT INPUT

OUTPUT OUTPUT

Figure 2-8

External Monitor Port Pinouts

Installation 2-9

2.5.5

Installing External Microphone

An external microphone can be attached to the notebook using the leftmost audio connector (when viewed from the rear of the notebook). When the external microphone is installed and the unit powered up, the internal microphone is disabled.

2.5.6

Installing External Audio Input Devices

The middle audio jack on the rear of the notebook allows you to connect an external sound source (e.g. tape player, radio, etc. ) to the notebook.

2.5.7

Installing External Audio Output Devices

The rightmost audio jack (when viewed from the rear of the notebook) provides an audio line output cable of driving external headphones, speakers or an external amplifier.

2.6

Installing the AC Power Adapter

Use the following procedures to connect the AC Adapter to the system:

c

Caution: Use only the AC Adapter supplied with the computer; other adapters can damage the unit.

1.

Remove the AC adapter from the packaging. Connect the round coaxial connector supplied with the notebook to the power receptacle on the rear of the notebook as shown in Figure 2-9. Connect the female side of the AC Power cord to the AC Adapter and connect the male end to a grounded AC outlet

2.

AC Adapter AC Po wer (120VAC to 230 VAC, 50 to 60 Hz)

. 2-10 Installation

Figure 2-9

AC Adapter Installation

2.7

Initial System Checkout

After you've installed all internal options and external cabling, you're ready for system checkout and software configuration. To check out the system, set the power switch on the notebook to the On (I) position which initiates the notebook self test. During self test execution, the computer checks the operation of all key hardware including memory and CPU (and displays copyright and version number data during test execution). Upon successful conclusion of self test, the computer automatically loads its operating system and Windows environment. If self test fails to complete and an error message is displayed, try powering down the computer for a couple of minutes and turning power back on to repeat self test. If the error message persists, refer to Section 6 for troubleshooting information.

2.8

Configuring the System

The first time you power up the notebook, it automatically runs the Setup Program which prompts you for country name and printer type. You will exit Windows and the notebook begins unzipping files and preparing the software for use.

2.9

Making Backups of System Software

The Notebook is preloaded with Windows 95 or Windows for Workgroups operating system software. Prior to extended use of the notebook, create a backup set of diskettes containing the system software for use in the event you have to rebuild the software system ( you can restore your system using the Restore Utility and a set of backup diskettes).

2.10 Loading Application Software
For assistance in loading Application Software, refer to Chapter 5 in the Extensa Series Notebook Computer User's Reference Manual.

Installation 2-11

3 Operating Instructions
3.1
Introduction

The first two subsections describe the Extensa 51x Series Notebook operating controls and indicators. The remainder of this section contains a summary of computer operations related to notebook maintenance including how to restore system software.

n

Note: For additional operating instructions, refer to the Extensa Series Notebook Computer Users Guide.

3.2
· · · · ·

Notebook Controls and Indicators

The Extensa Series Notebooks are equipped with the following controls and indicators: Group of five LEDs just above the keyboard (Sleep Mode, Hard Drive Activity, Num Lock, Caps Lock and Scroll Lock) Power, Setup, and Standby/Suspend buttons adjacent to the status LEDs Power LED and Charge LED indicators on the left rear corner of the notebook Touchpad and two select buttons at base of keyboard Combination key sequences on keyboard to control brightness, contrast and volume (refer to Paragraph 3.3.3).

These controls and indicators are shown in Figure 3-1 and described in greater detail in the following paragraphs.

Operating Instructions 3-1

Caps Lock Num Lock Hard Drive Activity Sleep Mode

Scroll Lock

Status LEDs

Touchpad Pointing Device

Standby/Suspend Button Setup Button

Charging LED

Power LED Power On/Off Button

Touchpad Select Buttons

Figure 3-1 Extensa Series Controls and Indicators

3.2.1
·

Button Switches

The notebook contains two button switches above the keyboard including: Power On/Off Switch - Alternate action, button type switch that controls power to the unit. Pressing the Power button causes power to be applied to the notebook and power up self test to be run. The PWR LED (left rear corner of notebook) glows green and the computer then loads Windows 95. When the Power button is pressed again, the Notebook powers down and all data in RAM memory is lost. Standby/Suspend Button Switch - an alternate action touch switch that invokes the save to disk feature and places the unit in Standby Mode (if previously On) or On if previously in Standby Mode.

·

3.2.2

Cover Release Latch

The Notebook contains one Cover Release latch. To open the notebook, slide the Release Mechanism to the right and lift up on the front edge of the notebook cover.

3-2 Operating Instructions

3.2.3

Touchpad Controls

The Extensa 51x Series Notebook Computers are equipped with a built-in mouse device called "the Touchpad" physically located at the bottom of the keyboard (refer to Figure 3-1). The cursor is positioned by touching and dragging your finger in the direction you want the cursor to go. The select functions are performed either by tapping the touchpad or by pressing the two buttons (switches) at the bottom of the keyboard. You can change the operation of the pad by changing values in the mouse section of the Windows 95 Control Panel. Once your cursor is in the proper place and you want to select, use the left button to click or double-click just as you would a mouse.

3.2.4

Keyboard Mode LEDs

The Notebook contains three "keyboard mode" indicators just above the keyboard on the left side (notebook cover open). These LEDs include:

· ·

CAP (Caps Lock) Indicator - This LED indicates that the keyboard is locked in the Uppercase mode. To switch to the Lowercase mode, press the Caps Lock key on the keyboard. NM (NM Lock) Indicator - This LED lights when you press the Fn-F7 (numbly) keys to toggle on the numeric keypad lock function. When the LED is On, the embedded numeric keyboard keys generate AT-keypad characters and functions when pressed in conjunction with the Fn key. When the NM indicator is Off, pressing the Fn key with the appropriate keys provides cursor movement, paging and other functions in the normal mode. When the NM indicator is On, the embedded numeric keypad becomes a temporary numeric keypad that does not require you to press any other key. SCROLL (Scroll Lock) Indicator - This LED lights to indicate that the keyboard is locked in the scroll mode.

·

3.3

Operating Procedures

Some of the operating features useful for notebook maintenance are provided in the following paragraphs. For additional operating instructions, refer to the Extensa Series Notebook Computer User's Manual.

3.3.1

Floppy Drive Operating Procedures

To avoid damaging the floppy drive drive, and to protect data, take the following precautions:

· ·

Never turn off or reset the notebook while the floppy activity indicator is lit. Keep the AC adapter at least 6 inches away from your drive. Operating Instructions 3-3

· · · · · · ·

Insert the floppy into the floppy drive slot with the label side up and the metal-shutter end first. Gently push the floppy into the floppy drive slot until the floppy clicks into place. To remove a floppy, press the eject button until the floppy pops out. Never force open the access shutter on a floppy. Always remove a floppy from the floppy drive before turning off the computer. Never transport the computer with a floppy in the floppy drive. Doing so can damage the drive head. If a floppy appears to be damaged, try to make a copy of it, and immediately discard it. Keep all floppies, when not in use, in a disk storage box to protect them from damage or loss.

3.3.2
· · ·

Installing/Removing PCMCIA Options

PCMCIA cards are inserted and ejected in much the same way as diskettes: Type I, Type I or Type III PCMCIA options may be installed in the compartment on the left side of the notebook. To insert a PCMCIA card, align the card with the socket and slide the card into the socket until it locks into place. To eject a PCMCIA card, go to the Windows 95 Control Panel, select PC Card, and select the card to stop; then press the release button and remove the PCMCIA option.

3.3.3
· · · ·

Computer Hot Keys

The Extensa Series recognizes the following hot key sequences: Ctrl-Alt-Del (warm boot) Ctrl-Alt-Esc (Enter setup screen); to use, power up notebook and press F8 at "Starting Windows 95" message. Select Command Prompt Only; then press Ctrl-Alt-Esc. Fn-F2 (in combination with Fn and left/right arrow keys)(Screen brightness and contrast adjustments); Fn-Esc to get out of adjustment routine. Fn-F5 (in combination with Fn and left/right arrow keys)(Audio volume control); Fn-Esc to get out of adjustment routine; Fn-F1 for help.

3-4 Operating Instructions

3.3.4

Responding to Low Battery Conditions

The computer generally will notify you when you are reaching a low battery condition by the following actions:

· · ·

Four short beeps per minute (unless battery warning is disabled) The battery low warning is automatically disabled when the AC Adapter is installed on the notebook, regardless of the charge condition of the battery pack. If the AC adapter is not plugged in within three minutes of a detected battery low condition, the notebook enters Suspend mode (if low battery suspend is specified in setup). When the notebook enters Suspend mode, it issues one beep, saves contents of RAM to disk and powers down the unit. The Notebook returns to the normal operating mode when the power switch is activated. The unit then recovers RAM information from the hard drive and restores the unit to its previous "On" condition.

·

3.3.5

Minimizing Power Usage

The following actions can minimize power usage and protect your work during the critical minutes before you shut the system down or replace on the battery packs with a fully charged pack:

· · ·

Press Ctrl-Standby to shut off the alarm (if its enabled) Save RAM Disk (if using RAM Disk feature) Press Standby/ Suspend button to put the computer in Standby/Suspend mode whenever you are not actively using the computer. This will save all your work and remember the application and file you were previously using when you return to the On condition. Power down the system if you do not need the computer

·

3.3.6
1. 2. 3.

Recharging the Battery Packs

The battery pack may also be charged in the notebook as follows: Install the battery pack in your computer (if not already installed). Connect the AC Adapter as described in Section 2. To fully charge the battery pack, leave it charging in the Notebook until the Charge LED extinguishes (approximately 90 minutes).

Operating Instructions 3-5

3.3.7

Restoring Missing System Files

When you power up the Notebook, it automatically checks for certain key files that must be present for normal system operation. If any of these files are accidentally erased as indicated by error message, insert the Windows 95 Startup diskette and reboot the system. This will allow you to boot up and troubleshoot your system.

3.3.8

Rebuilding the System Software

In the event of a hard drive replacement or system board replacement which resulted in loss of system software, you may need to rebuild the entire system software structure. The following items are required to rebuild the system software:

· ·

Set of backup diskettes of the system software or Windows 95 Startup diskette Operational Notebook

Insert the Windows 95 Startup diskette in the Notebook floppy drive and power up the system.

n

Note: For additional operating procedures, refer to the Extensa Series Notebook Computer User's Manual.

3-6 Operating Instructions

4 Theory of Operation
4.1 4.2
· · · · · · ·

Introduction Notebook Functional Description

This section describes the notebook theory of operation.

Functionally, the notebook computer consists of the following major subsystems: Processor and Memory Subsystem I/O Subsystem Video Subsystem Hard Disk Subsystem Floppy Disk Subsystem PCMCIA Subsystem Power Subsystem

A functional block diagram of the Extensa Notebook is shown in Figure 4-1.

4.2.1

Processor/Memory Subsystems

The Processor function, housed on the Main Board, is implemented with a 100 MHz Intel Pentium Processor. The processor operates in conjunction with RAM and ROM Memory on the Memory Board and other control logic on the Main Board to process software instructions (BIOS, Windows 95, and Applications). The memory subsystem, implemented on the Main Board and optional Dual Inline Memory Modules, provides 8 MB (expandable to 40 MB) of fast DRAM memory, 128 bytes of CMOS RAM (battery backed up) and 256 KB of Flash ROM for system and video BIOS storage. Tables 4-1 through 4-3 contain the Notebook I/O address map, DMA channel assignments and IRQ interrupt level assignments respectively.

Theory of Operation

4-1

PCMCIA Option Slot(s)

PCMCIA Adapter

State Machine & Glue Logic Intel 100 MHz Pentium Processor System Controller

SD BUS

Drivers/ Receivers

RS-232 Serial Port

XD BUS

MAIN BOARD
Clock Generator

M e mo ry Board RAM Expansion Modules
XD BUS

SYSTEM & VGA BIOS

Super I/O Controller

Internal Floppy Drive

Internal Hard Drive Parallel Port

512KB Video RAM Input From AC Adapter Power Supply Section

Video Controller
C&T 65540

Keyboard/PS2 Mouse Logic

Internal Tou chp ad

EXTERNAL VGA MONITOR Inverter Board
Located internal to the LCD Assembly

Internal Keyboard

Internal LCD Display 640 X 480 VGA LCD

Figure 4-1

Notebook Functional Block Diagram

4-2

Theory of Operation

4.2.2

I/O Subsystem

The I/O subsystem, implemented with an NS87334 VJG Super I/O Controller Chip, provides for such functions as internal Hard Drive control, floppy drive control, and serial and parallel ports. The Super I/O Controller includes the following features:

· · ·

100 percent compatible with ISA, EISA, and Micro-channel architectures Built-in Floppy Disk Controller Software compatible with the DP8473, the 765A and N82077 · · · · · ·
16-byte FIFO (default disabled) Burst and Non-burst modes Perpendicular Recording drive support New high-performance internal digital data separator (no external filter components required) Low-power CMOS with enhanced power-down mode Automatic media-sense support

·

Two UARTs · · ·
Software compatible with the PC16550A and PC16450 MIDI compatible Infrared support on UART2 (IRDATM-compliant)

·

Bidirectional Parallel Port · · · · · ·
Enhanced Parallel Port (EPP) compatible Extended Capabilities Port (ECP) compatible, including level 2 support Bidirectional under either software or hardware control Compatible with ISA, EISA, and Micro Channel architectures Ability to multiplex FDC signals on parallel port pins for external FDD Includes protection circuit against damage caused when printer is powered up, or operated at higher voltages

·

Integral IDE controller ·
Provides a complete IDE interface with DMA control (except for optional buffers)

Theory of Operation

4-3

· ·

Integral address decoder - provides selection of all primary and secondary ISA addresses including COM1-4 and LPT1-3. Enhanced Power Management Function · · · · ·
Special configuration registers for power down Enhanced programmable power-down and wake-up modes Auto power-down and wake-up modes 3 special pins for power management Typical current consumption during power-down is less than 10A

4.2.3

Video Subsystem

The video subsystem, implemented on the Main Board and on the LCD Display Unit, displays text, graphics and drives an external VGA port. The video subsystem is implemented with a Chips and Technology high performance flat panel/RT VGA controller and supporting logic and video RAM (1 MB). The major features of the VGA controller include:

· ·

Highly integrated design (flat panel / CRT VGA controller, RAMDAC, clock synthesizer) Multiple Bus Architecture Integrated Interface · · ·
Local Bus (32-bit CPU Direct and VL) PCI Bus EISA/ISA (PC/AT) 16-bit Bus

· · · · · · ·
4-4

Advanced frame buffer architecture uses available display memory, maximizing integration and minimizing chip count Integrated programmable linear address feature accelerates GUI performance High performance resulting from zero wait state writes (write buffer) and minimum wait state reads (internal asynchronous FIFO design) Supports panel resolutions up to 800 x 600 SMARTMAP intelligent color to gray scale conversion enhances text legibility Text enhancement feature improves white text contrast on flat panel displays Fully Compatible with IBM VGA

Theory of Operation

4.2.3.1

External VGA Drive Capability

On the Extensa notebook, the external VGA port is provided by the port adaptor fixture in the form of a 15-pin, female, D-type connector which can be used to drive an external CRT (up to 1024 x 768 x 256 colors.

4.2.4

Hard Disk Subsystem

The Hard Disk Subsystem, controlled by the IDE interface compatible NS87334 VJG Super I/O Controller on the Main Board, provides disk storage for all system software and user files. The Extensa 51x Series Notebooks are equipped with either a 540 or 810 million byte drive. During the manufacturing process, Texas Instruments formats the hard disk and then loads all supplied software including Windows 95.

c c

Caution: Formatting the disk drive erases any data that may be stored on the disk. Therefore, do not attempt a format of the hard disk unless the computer self test and diagnostics confirm that the disk has not been formatted. A Hard Drive activity LED is located along the top of the notebook. This LED lights during hard drive read/write accesses.

Caution: The notebook should not be moved when the HDD icon is lit to prevent accidental damage to the hard drive.

4.2.5

Floppy Diskette Drive Subsystem

The Floppy Diskette Drive Subsystem consists of a Floppy Controller and the Floppy Diskette Drive. The Floppy Diskette Drive can read/write standard 3.5-inch diskettes.

Theory of Operation

4-5

4.2.6

PCMCIA Subsystem

The notebook is equipped with an on-board PCMCIA host adapter PCMCIA Controller) and sockets to support Type I, Type II or Type III options. The PCMCIA Controller has the following features:

· · · · · · · · · · · · · · · · ·

Single-chip PCMCIA host adapters Direct connection to ISA (PC AT) Bus Direct connection to PCMCIA 2.0 Bus PCMCIA 2.0- and JEIDA 4.1-compliant 82365SL-compatible register set, ExCA-compatible Automatic Low-power Dynamic Mode for lowest power consumption Programmable Suspend Mode Five programmable memory windows per socket Two I/O windows per socket Programmable card access cycle timing 8- or 16-bit CPU interface 8- or 16-bit PCMCIA interface support ATA disk interface support Automatic flash memory timing support Easy host interface using ISA I/O addresses 03E0h, 03E1h Mixed-voltage (3.3V or 5V) operation Dual-socket-interface, 208-pin QFP

4.2.7
· · · ·
4-6

Power Subsystem

The Power Subsystem consists of the following major parts: Power Management (hardware and software components) AC Adapter Primary Battery Board Primary Battery Pack

Theory of Operation

4.2.7.1

Power Management

The notebook is equipped with a power management function that minimizes battery usage for prolonged battery operation and automatically recharges the batteries when the notebook is used with an AC adapter. The power management modes and warnings include the following:

· · · · ·

LCD standby mode Hard disk standby mode System standby/suspend mode Battery-low warning Standby/suspend upon battery low

4.2.7.2

AC Adapter

The notebook uses an AC adapter with built in over voltage and short circuit protection. The adapter can withstand a continuous short-circuit to DC output without damage to the notebook logic components. The adapter operates in Shutdown mode shorting Vo trail and resets to the normal Power mode after the fault condition is removed.

4.2.7.3

Primary Battery Pack

The Extensa Series Notebooks use the Duracell DR35 as the primary battery pack. Specifications for the Primary Battery Pack are provided in Table 4-4.

Theory of Operation

4-7

Table 4-4 Primary Battery Pack Specifications

Function
Battery type Cell structure Nominal voltage Cell energy capacity Typical Minimum Nominal rated capacity Operating Temperature_ Discharge Charge Charge and discharge cycles Weight Battery discharge time

Specifications
NiMH (Nickel Metal-Hydride) 9 cells per pack (in series) 10.8 V 2400 mAH 2500 mAH 2330 mAH 27 Watt-hours -20 to 50°C (at 95%RH) 0 to 45°C (at 95%RH) 500 (minimum) 470 grams 3 hours (with APM) Battery charge time

4-8

Theory of Operation

5 Troubleshooting Procedures
5.1
· · ·

General

This section provides the following information: Overview of the fault isolation process Guidelines for isolating computer malfunctions to replaceable subassemblies Instructions for executing diagnostics and interpreting error messages

5.2
·

Overview of Fault Isolation Process

The fault isolation process (summarized in Figure 5-1) consists of the following: Quick Check of the following: · ·
Notebook power system (including battery packs and AC Adapter connections) - refer to Paragraph 5.4. Switch settings (ensure Power switch is On, and press Standby switch to ensure that Notebook is not in Standby mode; press Shift to ensure the notebook is not in Auto-Suspend mode. All external cabling (if any) Check LCD Contrast adjustment (refer to Section 3)

· ·

· ·

Record and attempt to resolve any displayed error messages/LED indications (refer to Paragraph 5.3 and Table 5-1) Record and attempt to resolve any series of beeps emitted from the notebook indicating test failure (refer to Table 5-2)

Troubleshooting 5-1

START

COMPUTER TROUBLE INDICATION ?
Y S E

NO

WHEN POWER SWITCH SET TO ON,, NO INDICATION OF POWER; SCREEN DARK, STATUS LED's EXTINGUISHED

DEAD COMPUTER SYMPTOMS ? NO

YES

SEE PARAGRAPHS 5.3.1 & 5.3.2

SET POWER SWITCH TO ON. SELFTEST AUTOMATICALLY RUNS

RUN SELF TEST

ERROR MESSAGE ?
NO

YE S

SEE PARAGRAPH 5.3.3

MODEM PROBLEM ?

YES

SEE PARAGRAPH 5.3.4

NO RUN DIAGNOSTICS

DIAGNOSTICS ERROR MSG ? NO

YES

See Appendix B (PC Doctor)

Figure 5-1 Troubleshooting Flowchart

5-2 Troubleshooting

· · · · ·

Try rebooting the system (Ctrl-Alt-Del); restore system from diskettes, if necessary. If the computer is capable of running the Setup program; check the serial and parallel port configurations, and other features that may affect system operation. Run Diagnostics to further isolate problem area (refer to Paragraph 5.3.5). For indicated hardware failures, cycle power and repeat self test to verify that a hard failure has occurred. Remove and replace suspect hardware (as described in Section 6 of this manual) and retest the system using the diagnostic tests as described in Paragraph 5.3.5.

The detailed block diagram, shown in Figure 5-2, is useful in performing fault analysis of various internal subsystems. For example, an LCD hardware problem can be traced to either the LCD, Inverter Board, VR Board, or Battery Board. Other subsystem problems can be isolated in a similar fashion using the detailed block diagram as a troubleshooting tool.

5.3

Troubleshooting Procedures

The built-in self test program and the disk resident diagnostics program (PC-Doctor) are useful tools in computer troubleshooting. However, if the computer has a power, keyboard or display problem, you should first solve this problem before running diagnostics. If the computer powers up and displays messages on the LCD or emits a series of beeps, skip to Paragraph 5.4.3 for further instructions.

5.3.1

Troubleshooting a Power Supply Problem

If the computer does not power up when the Power Switch is set to the ON position, you most likely have a malfunction in the power subsystem (loss of power at the AC Outlet, faulty AC Adapter, discharged Battery Packs, or faulty Power Supply Board). With a power problem, all LEDs are extinguished, the LCD screen is blank, the system does not respond when the standby switch is pressed several times consecutively and no drive activity can be heard. The computer is unable to load software and displays no visible signs of activity. To fault isolate a power problem, check the following:

·

AC Adapter and Battery - Plug in the AC adapter and double check all connections on the Adapter and computer. Ensure that the Notebook Power switch is set to the On position and that the system is not in Standby or sleep mode.

Troubleshooting 5-3

· · ·

Measure the voltage at the AC Outlet or plug in a known good appliance (EG. a lamp) to verify that voltage is present. If the voltage is OK, try replacing the AC Adapter Check to see that the battery pack is installed correctly (try using a recharged battery pack if battery is discharged). If the AC outlet voltage, AC Adapter, and battery packs test normal, but the computer will not power up, replace the Power Supply Board and/or Battery Board as described in Section 6.

PCMCIA Option Slot(s)

PCMCIA Adapter

State Machine & Glue Logic Intel 100 MHz Pentium Processor System Controller

SD BUS

Drivers/ Receivers

RS-232 Serial Port

XD BUS

MAIN BOARD
Clock Generator

M e mo ry Board RAM Expansion Modules
XD BUS

SYSTEM & VGA BIOS

Super I/O Controller

Internal Floppy Drive

Internal Hard Drive Parallel Port

512KB Video RAM Input From AC Adapter Power Supply Section

Video Controller
C&T 65540

Keyboard/PS2 Mouse Logic

Internal Tou chp ad

EXTERNAL VGA MONITOR Inverter Board
Located internal to the LCD Assembly

Internal Keyboard

Internal LCD Display 640 X 480 VGA LCD

Figure5-2 Troubleshooting Block Diagram

5-4 Troubleshooting

5.3.2

Troubleshooting a Display Problem

If the LCD remains blank when you turn on the computer, and the status indicators light, check the following controls on the display (refer to Figure 3-1):

·

LCD Standby mode - If the LCD backlight remains off, even with the Brightness and Contrast Controls set to their highest positions (refer to Section 3), the LCD may be in Standby Mode. Press the Standby or Power button to resume the system. Notebook Set for External Monitor - use CMOS Setup to reset notebook. LCD - Replace the cover-display assembly as described in Section 6 of this manual. Low battery - Use a fully charged battery.

· · ·

5.3.3

Fault Isolation Using Self Test

When the computer is first powered up, it automatically performs a self test of its central hardware and memory functions. During self test (which lasts for a few seconds), the display shows copyright and version number information.

n

Note: Some procedures in this paragraph require you to use keystroke sequences, such as Ctrl-Alt-Del. To execute a keystroke sequence such as this, you must press all three keys simultaneously.

5.3.3.1

Self Test Error Messages

Upon successful completion of the self test, the computer automatically loads its operating system and other built-in utilities. If the self test fails to complete successfully, the display shows one of the error messages described in Appendix A.

5.3.4

PCMCIA Modem Problems

If an optional PCMCIA modem does not work properly, check the following items:

· ·

Proper installation of any PCMCIA options (check Modem settings under Control Panel). Dialing problem or wrong number - Try dialing a number that you have previously dialed successfully.

Troubleshooting 5-5

· ·

Faulty phone line - Connect a telephone to the line and listen for a dial tone. Software program - Check to ensure that you have installed the software correctly.

5.3.5

Fault Isolation Using Diagnostics

PC-Doctor, supplied with the Extensa Series Notebooks, is a powerful diagnostics tool that can help you scan an internal RAM system for viruses, determine the hardware configuration of a local or remote system, benchmark its performance, analyze the performance of all subsystems, and perform a suite of interactive and non-interactive tests on attached devices. The test results are stored in a log which can be printed out (by pressing F2) or saved in a disk file (by pressing F3). Features of the diagnostic program are accessed through a series of pull-down menus and basic keyboard keys (cursor keys to move highlighted pointer, Enter key to select a highlighted feature, Esc key to cancel a function and move back one level). PC-Doctor is typically user friendly but if you don't understand a feature, context-sensitive "help" information is available at any time by pressing the F1 function key; pressing the F1 function key twice accesses the online Technical Reference Manual for PC-Doctor. A powerful set of utilities within PC-Doctor (that can be run locally or remotely) simplify the task of determining system configuration data, allocating and using system memory, IRQ and DMA use, what device drivers are installed, what COM and LPT ports are assigned and what ports are available, identifying partitioning data for fixed disk drive(s), determining the VGA setup information, reading the software interrupts/interrupt vectors, etc. Functionally, PC-Doctor includes the following:

·

Group of nine non-Interactive diagnostic tests that perform a non-destructive test of the major hardware functions in the notebook (Processor, Memory, System board, video section, serial and parallel ports (when loopback adapters are installed), hard disk and floppy disk. Group of seven Interactive tests (require operator input) for testing the keyboard, video sections, sound subsystem, mouse, joystick, diskette drive, printer subsystem and SCSI/CD-ROM Drive subsystems. Utility that provides detailed system information such as configuration data, allocation and use of system memory, IRQ and DMA use, what device drivers are installed, what COM and LPT ports are assigned and what ports are available, partitioning data for fixed disk drive(s), VGA setup information, software interrupts and interrupt vectors.

· ·

5-6 Troubleshooting

·

Group of special purpose utilities to run other tests from PC-Doctor, perform a virus scan of the internal RAM system, edit configuration files, surface scan hard drives, measure system performance, open a DOS prompt, provides terminal access to devices connected to serial ports, supports memory debug operations, enables remote operations, permits deep discharge of notebook batteries and provides an extensive test reporting function.

The PC-Doctor diagnostic program contains a group of nine non-Interactive diagnostics, available from the Diagnostics heading in the main menu, that permits testing various hardware sections without operator input. You can select one, several, or all tests from the Diagnostics menu. These tests are non-destructive; the serial and parallel port tests require disconnecting ex