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1.12 Power Supply
1 Hardware Overview
Satellite A40 Maintenance Manual (960-458)
1-33
1.12 Power Supply
The power supply supplies many different voltages to the system board and performs the following
functions:
1.
Checks power input to determine:
•
Whether the AC adaptor is connected to the computer.
•
Whether the battery pack is installed and supplying power.
2.
Checks power supply’s internal controls:
•
Battery pack charging: start, stop and voltage supplied to the battery pack.
•
Power supply system: Power supplied from a DC power source (AC adaptor).
•
Faulty power supply: Executes forced shutdown if needed.
•
Logic: Power supply to various circuits
•
Charging current to PWM control IC for battery pack charging
3.
Controls the following aspects of the logic system
•
Power supply to gate arrays
•
Power on/off
4.
Indicates the following:
•
DC IN (sets LED to orange or blue)
•
Battery icon (sets LED to orange or blue)
•
Faulty power supply by low battery
5.
Interface for the following:
•
BIOS via EC/KBC
•
Function mode of power supply
6.
Detects the following:
•
Input voltage to logic system
•
Input voltage, overvoltage and input/output to battery pack
•
Battery pack’s internal temperature
•
Input voltage to DC power supply (output from AC adaptor)
The power supply output rating is specified in Table 1-11.
Содержание Satellite A40
Страница 11: ...Satellite A40 Maintenance Manual 960 458 xi ...
Страница 12: ...Chapter 1 Hardware Overview ...
Страница 13: ...1 Hardware Overview 1 ii Satellite A40 Maintenance Manual 960 458 ...
Страница 16: ...1 Hardware Overview Satellite A40 Maintenance Manual 960 458 1 v ...
Страница 54: ...Chapter 2 Troubleshooting Procedures ...
Страница 55: ...2 Troubleshooting Procedures 2 ii Satellite A40 Maintenance Manual 960 458 ...
Страница 59: ...2 Troubleshooting Procedures 2 vi Satellite A40 Maintenance Manual 960 458 ...
Страница 120: ...2 14 SD Card Slot Troubleshooting 2 Troubleshooting Procedures Satellite A40 Maintenance Manual 960 458 2 61 ...
Страница 121: ...Chapter 3 Tests and Diagnostics ...
Страница 122: ...3 Tests and Diagnostics 3 ii Satellite A40 Maintenance Manual 960 458 ...
Страница 140: ...3 Tests and Diagnostics 3 6 Keyboard Test 3 16 Satellite A40 Maintenance Manual 960 458 PRESS Enter KEY ...
Страница 212: ...3 29 Thermal Radiation Control Test 3 Tests and Diagnostics Satellite A40 Maintenance Manual 960 458 3 85 ...
Страница 213: ...Chapter 4 Replacement Procedures ...
Страница 214: ...4 Replacement Procedures 4 ii Satellite A40 Maintenance Manual 960 458 ...
Страница 384: ...Appendices ...
Страница 385: ...Appendices App ii Satellite A40 Maintenance Manual 960 458 ...
Страница 388: ...Appendices Satellite A40 Maintenance Manual 960 458 App v Appendix I Reliability I 1 ...
Страница 392: ...Appendices Satellite A40 Maintenance Manual 960 458 App ix ...
Страница 398: ...Appendices Appendix A Handling the LCD Module A 6 Satellite A40 Maintenance Manual 960 458 ...
Страница 438: ...Appendices Appendix E Key Layout E 4 Satellite A40 Maintenance Manual 960 458 ...
Страница 440: ...Appendices Appendix F Wiring Diagrams F 2 Satellite A40 Maintenance Manual 960 458 ...
Страница 442: ...Appendices Appendix G BIOS Rewrite Procedures G 2 Satellite A40 Maintenance Manual 960 458 ...
Страница 444: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 Satellite A40 Maintenance Manual 960 458 ...
Страница 446: ...Appendices Appendix I Reliability I 2 Satellite A40 Maintenance Manual 960 458 ...