1.12 Power Supply
1 Hardware Overview
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 green)
•
Battery icon (sets LED to orange or green)
•
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 1-10.
TECRA M2V Maintenance Manual (960-476)
1-31
Содержание Tecra M2V
Страница 1: ...Toshiba Personal Computer TECRA M2V Maintenance Manual TOSHIBA CORPORATION File Number 960 476 ...
Страница 10: ...x TECRA M2V Maintenance Manual 960 476 ...
Страница 11: ...Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 ii TECRA M2V Maintenance Manual 960 476 ...
Страница 50: ...1 Hardware Overview 1 13 Batteries 1 36 TECRA M2V Maintenance Manual 960 476 ...
Страница 51: ...Chapter 2 Troubleshooting Procedures ...
Страница 52: ...2 Troubleshooting Procedures 2 ii TECRA M2V Maintenance Manual 960 476 ...
Страница 56: ...2 Troubleshooting Procedures 2 vi TECRA M2V Maintenance Manual 960 476 ...
Страница 110: ...2 Troubleshooting Procedures 2 14 SD Card Slot Troubleshooting 2 54 TECRA M2V Maintenance Manual 960 476 ...
Страница 111: ...Chapter 3 Tests and Diagnostics ...
Страница 112: ...3 Tests and Diagnostics 3 ii TECRA M2V Maintenance Manual 960 476 ...
Страница 195: ...Chapter 4 Replacement Procedures ...
Страница 196: ...4 Replacement Procedures 4 ii TECRA M2V Maintenance Manual 960 476 ...
Страница 200: ...4 Replacement Procedures 4 vi TECRA M2V Maintenance Manual 960 476 ...
Страница 274: ...4 Replacement Procedures 4 23 LCD unit FL inverter 4 74 TECRA M2V Maintenance Manual 960 476 ...
Страница 296: ...4 Replacement Procedure 4 26 Fluorescent Lamp 4 96 TECRA M2V Maintenance Manual 960 476 ...
Страница 297: ...Appendices ...
Страница 298: ...Appendices App ii TECRA M2V Maintenance Manual 960 476 ...
Страница 304: ...Appendices App viii TECRA M2V Maintenance Manual 960 476 ...
Страница 310: ...Appendices Appendix A Handling the LCD Module A 6 TECRA M2 Maintenance Manual 960 468 ...
Страница 356: ...Appendices Appendix E Key Layout E 2 TECRA M2V Maintenance Manual 960 476 ...
Страница 360: ...Appendices Appendix G BIOS rewrite procedures G 2 TECRA M2V Maintenance Manual 960 476 ...
Страница 362: ...Appendices Appendix H EC KBC rewrite procedures H 2 TECRA M2V Maintenance Manual 960 476 ...
Страница 364: ...Appendices Appendix I Reliability I 2 TECRA M2V Maintenance Manual 960 476 ...