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Maintenance Manual
TM
Extensa 900 Series
Notebook Computers
9813715-0001
December 1996
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Copyright © 1996 Texas Instruments All Rights Reserved TM Extensa 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, witho
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Preface Introduction TM This manual provides installation, operation and servicing data for the Extensa 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 t
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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
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Contents Paragraph Page Preface Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii Intended Audience- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii Contents - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii Other Manuals About the System- - - - - - - - - - - - - - - - - - - - - -
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Contents (continued) Paragraph Page Section 2 Installation (continued) Installing External Notebook Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-5 Installing the Mobile Productivity Base (Option) - - - - - - - - - - - - - - - - - - - 2-5 Docking the Notebook to the MPB - - - - - - - - - - - - - - - - - - - - - - - - 2-5 Cabling to the MPB - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-6 Ins
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Contents (continued) Paragraph Page Section 4 Theory of Operation Introduction- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1 Notebook Functional Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1 System Processor - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-3 Memory Subsystem- - - - - - - - - - - - - - - - -
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Contents (continued) Paragraph Page Section 6 Troubleshootig Procedures (continued) General Fault Isolation Procedures - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-12 Fault Isolation Using Diagnostics - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-13 PC-Doctor (In DOS Mode or DOS Windows) - - - - - - - - - - - - - - - - - - - - - 5-13 Supporting Online Documentation- - - - - - - - - - - - - - - -
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Contents (continued) Paragraph Page Section 6 Field Service (continued) Removing/Replacing the MPB Battery - - - - - - - - - - - - - - - - - - - - - - - - -6-33 Removing/Replacing the MPB Housing- - - - - - - - - - - - - - - - - - - - - - - - -6-34 Removing/Replacing the Docking Cable - - - - - - - - - - - - - - - - - - - - - - - -6-35 Removing/Replacing the Docking Mechanism - - - - - - - - - - - - - - - - - - - -6-36 Removing/Replac
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1 General Description 1.1 Introduction TM This manual contains field and factory level servicing information for the Extensa 900 Series Notebook Computers (Figure 1-1) marketed by Texas Instruments. This section provides a general overview of the Extensa 900 Series, describes the standard and optional features, and identifies the major assemblies and subassemblies. This section also contains detailed functional and environmental specifications for the Extensa 900 Series Notebook Computers
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♦ Powerful PCI Bus architecture ♦ 16 MB main memory (expandable to 80 MB using 8 MB, 8 MB, 16 MB, 32 MB or 64 MB EDO 64-bit type small outline dual inline memory module (soDIMM) upgrades) ♦ 256 KB Level-2 cache memory ♦ Built-in 2.5-inch IDE high capacity (1.35 GB or greater) Hard Disk Drive ♦ External Floppy Drive Module (attaches to the Parallel Port) ♦ Advanced video features - DSTN or TFT internal color display - Simultaneous display with external CRT - 2.0 MB video memory - F
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LCD Power Switch Right Speaker Status Indicators Right Battery Lock FIR Port Battery Left Audio and Touchpad Pack Speaker Bottom of Unit Mic Jacks HDD Left Access Battery Cover Lock VGA Port Expansion Serial Memory Port PC Acess Cover Card Parallel Slots Port PS/2 AC Adapter Port Connection Figure 1-2 900 Series Notebook External Features 1.2.1 Video Display Features The Extensa 900 Series Notebooks contain large screen internal LCD displays and can TM simultaneously drive the internal LCD an
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1.2.1.1 Internal LCD The Extensa 900 Series Notebooks contain one of the following LCDs (model dependent): ♦ 12.1-inch DSTN display (900CD Only) ♦ 11.3-inch TFT 1.2.1.2 External CRTs The Extensa 900 Series Notebooks are equipped with a 15-pin SVGA connector that can drive an external CRT (either alone or simultaneously with the internal LCD). When the notebook is set to the SimulSCAN mode, a minimum resolution of 800 x 600 x 256 colors is supported. When operating in the External CRT
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1.2.2 Keyboard Features The Extensa 900 Series Notebooks contain a built-in 86/87-key keyboard (Figure 1-3) ® compatible with the IBM enhanced 101/102-key keyboard. The keyboard contains 12 programmable function keys, an embedded numeric keypad (Figure 1-4) and dedicated control keys (hot keys). Figure 1-3 Embedded Numeric Keypad 1.2.3 Software Features As a standard feature, the Extensa 900 notebooks are factory loaded with dual load ® (Windows 95 or Windows for Workgroups) software to al
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1.2.4 Standard Peripheral Devices As standard features, the Extensa notebooks include an internal IDE hard drive, an external 3.5-inch floppy disk drive and built-in touchpad (mouse device). 1.2.5 900 Series Connectivity Features As standard features, the Extensa 900 Series notebooks includes most standard desktop ports including a serial port, parallel port, PS/2 port, and external VGA port. The 900 Series also includes a fast infrared (FIR) port and an expansion bus connector fo
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Table 1-2 900 Series External Ports Port Assignment Description External VGA Port 15-pin Female connector used to attach an external SVGA monitor to the notebook. Serial Port 9-pin Male connector used to attach an RS-232 serial device to the notebook. Parallel Port 25-pin Female connector used to attach a bidirectional printer or an external floppy disk drive (requires special cable for use with floppy disk drive). 6-pin Circular connectors used to attach external keyboard/mouse devices to
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1.2.7 Memory Expansion The notebook comes standard with 16 MB of RAM expandable to a maximum of 80 MB using soDIMM modules (available in 8, 16, 32 or 64 MB sizes). Access to the expansion socket is accommodated via a removable panel on the bottom of the notebook as shown in Figure 1-5. Expansion Memory Access Cover Figure 1-5 Memory Expansion Features 1.2.8 PCMCIA Card Options The Notebook contains an onboard PCMCIA Controller and two 64-pin sockets that can accept up to two credi
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Figure 1-6 Installing PCMCIA Card Options 1.2.9 Mobile Productivity Base Option The Mobile Productivity Base (Figure 1-7) provides a port replicator function with separate External Keyboard and Mouse ports, plus powerful desktop expansion features including a Modular Bay for CD-ROM or Floppy Disk Drive and provisions for an Advanced PCI Card option. These features are summarized in Table 1-4. Table 1-4 Mobile Productivity Base Expansion Features Expansion Feature Description Media Bay CD
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Notebook Connector Secondary Battery Audio Jacks Advanced PCI Option Slot Media Bay (Floppy or CD-ROM Drive) Two PS/2 Ports Standard for both External Notebook Keyboard and Mouse Ports Figure 1-7 Mobile Productivity Base (MPB) Features 1.2.9.1 Docking and Undocking Docking and undocking of the Mobile Productivity Base is controlled by a latch and lever on the left side of the base as shown in Figure 1-8. The latch releases the lever; the lever is extended 90 degrees outward to rel
