Texas Instruments 570CD 4.2.8 , 4.2.9

• 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

4.2.8 Sound Subsystem (Model Dependent)

Some models of the Extensa 57x Series notebooks are equipped with a

16-bit stereo sound system including:

•Built-in microphone and stereo sp ea kers

•Stereo line input (5-pin jack, DIP)

•Stereo Line Output (5-pin jack, DIP)

•External microphone input (5-pin jack, DIP)

•Audio chipset

The sound subsystem is physically implemented on the IR/Sound Board.

4.2.9 Power Subsystem

The Power Subsystem consists of the following major parts:

•Power Management (hardware and software components)

•AC Adapter

•Power Supply Board

•Nickel Metal Hydride (NiMH) Battery Pack

•Optional Secondary Battery Pack (Lithium Ion) if not using the Media

Bay for a floppy drive or CD-ROM Drive

4.2.9.1 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 ad apter.

4-8 Theory of Operation

Contents

Main Page Contents Preface 1 General Description 2 Installation 3 Operating Instructions 4 Theory of Operation 5 Troubleshooting Procedures 6 Field Service A Self Test Error Messages B PC-Doctor Diagnostics Preface Introduction Intended Audience Contents Other Manuals About the System Ordering Parts and Supplies 1 General Description 1.1 1.2 Features Model 570CD Model 570CDT Model 1.3 Configuration P/N Suffix Configuration P/N Suffix 1.4 Page 1.4.1 1.4.2 1.4.3 Glidepad Select Buttons n 1.4.3.1 Controls and Indicators n 1.4.4 ^ 1.4.5 n 1.4.6 1.4.7 1.5 1.6 1.6.1 1.6.2 1.7 Specifications Page Specifications Models 570CD/575CD Models 570CDT/575CDT 1.8 2 Installation 2.1 2.2 n 2.3 c n 2.3.1 2.3.2 2.3.3 2.4 c 2.5 2.5.1 Page 2.5.2 2-6 Installation Figure 2-3 Parallel Port Location/Pinouts 2.5.3 c 2.5.4 2.5.5 2.6 c AC Adapter 2.7 AC Power (120VAC to 230 VAC, 50 to 60 Hz) 2.8 2.9 2.10 3 Operating Instructions n 3.1 3.2 3.2.1 3.2.2 3.3 3.3.1 Page 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.3.7 3.3.8 3.3.9 Page 4 Theory of Operation 4.1 4.2 4.2.1 MAIN BOARD 4-2 Theory of Operation System Controller 82C557 Figure 4-1 Notebook Functional Block Diagram Address Range Device Controller Channel Address Function Priority Interrupt Number Interrupt Source n 4.2.2 4.2.3 4.2.4 c 4.2.5 4.2.6 4.2.7 4.2.8 4.2.9 Page 4.2.9.4 DC-DC Converter/Battery Charger Circuit 5 Troubleshooting Procedures 5.1 5.2 SEE PARAGRAPH 5.3.3 Figure 5-1 Troubleshooting Flowchart See Appendix B (PC-Doctor) 5-2 Troubleshooting Procedures 5.3 5.3.1 recharged battery pack if battery is discharged) 5-4 Troubleshooting Procedures Figure 5-2 Troubleshooting Block Diagram n 5.3.3 5.3.4 5.3.5 Page Interactive Tests Supporting Online documentation Page 5.3.5.3 Running PC-Doctor n 5.3.5.4 Quitting PC-Doctor n 6 Field Service c 6.1 6.2 6.2.1 c 6.2.2 6.2.3 6.2.4 6.3 c 6.4 and Assemblies 6.4.1 Page 6.4.2 Page Item No. 6.5 c Procedures n 6.5.1 Pack 6.5.3 6.5.4 Modules (DIMMs) 6.5.5 6.5.6 6.5.7 Assembly 6.5.8 6.5.9 6.5.10 6.5.11 n 6.5.12 6.5.13 6.5.14 6.5.15 c Appendix A Self Test Error Messages A.1 Error Messages A-1 Table A-1 Self Test Error Messages Error Message Corrective Action Table A-2 POST Checkpoint List A-2 Error Messages Checkpoint No. Description Error Messages A-3 Checkpoint No. Description A-4 Error Messages Page B PC-Doctor Diagnostics B.1 PC-Doctor Diagnostics B-1 B.2 B.3 Table B-1 PC-Doctor Key Assignments B-2 PC-Doctor Diagnostics Table B-2 Test Selection Menu Special Keys B.4 n B.5.1 B.5.2 B.5.3 B.5.4 B.5.5 B.6 B-6 PC-Doctor Diagnostics B.7