Texas Instruments 570CD 6.5.8 , 6.5.9 , 6.5.10

6. Lift the status LCD assembly out of the unit.

7. Reinstallation of the status LCD assembly is the reverse of Steps 1

through 6.

6.5.8 Removing/Replacing the Top Case Assembly

To remove and replace the top case assembly assembly, perfor m the

following procedure:

1. Remove the keyboard assembly as described in Paragraph 6.5.5.

2. Remove the display assembly as described in Paragraph 6.5.6.

3. Remove the LCD status assembly as described in Paragraph 6.5.7.

4. Unplug the small cable located next to the keyboard ZIF connector.

5. Flip the unit over and remove the eight screws from the base. Do Not

remove the flat head screw at the rear of the unit next to the switch.

Note: You do not need to remove the two screws holding the RAM

access door to the base assembly.

6. Remove the screw to the right of the display cable inter face board

(located behind the status LCD assembly).

7. Turn the unit over and lift the rear of the top case assembly one to

two inches; then pull the top case tow a rds you while keeping the base

in place.

8. Reinstallation of the top case assembly is the reverse of Steps 1

through 7 above.

6.5.9 Removing/Replacing the Glidepad Assembly

To remove/replace the glidepad assembly, perform the following procedure :

1. Remove the top case assembly as described in Paragraph 6.5.8.

2. Flip the top case assembly over and lay it on a flat surface.

3. Remove the four screws that secure the glidepad board assembly to

the plastics.

4. Carefully lift the glidepad board out of the plastics. Note that the

glidepad is tethered to the button board by a cable and LIF

connectors.

5. Replacement of the glidepad assembly is the reverse of Steps 1

through 4 above.

6.5.10 Removing/Replacing the IR/Sound Assembly

To remove and replace the IR/sound assembly, perform the follow ing

procedure:

1. Remove the top case assembly as described in Paragraph 6.5.8.

6-12 Field Service

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