1.7 Power Supply
1 Hardware Overview
PORTEGE M100 Maintenance Manual (960 -452)
1-15
1.7 Power Supply
The power supply distributes 27 different voltages to the system board and performs the
following functions:
1.
Input port mana gement
•
AC adaptor connection
•
Battery pack installation
•
The voltage of AC adaptor (both IN and OUT)
2.
Power supply internal control
•
Battery pack charging status (ON/OFF)
•
Controls DC voltage output by the of AC Adaptor
•
Regulates power supply to system components (load and logic circuits)
•
Controls circuit breakers in event of a power supply malfunction
3.
Management of power to logic circuits
•
Controls power to the CPU
•
Regulates power supplied to gate arrays
•
Controls ON/OFF power
4.
Status indicators
•
DC IN LED
•
Battery LED
5.
External device interface
•
Monitors I
2
C bus connections through EC/KBC on the system board.
•
Transmits the power supply mode.
6.
Monitors power output
•
Power to systems components (load and logic circuits)
•
Battery pack voltage, overvoltage and I/O current
•
Battery pack internal temperature
•
PWRGD from the CPU; 100 signal (power supply healthy)
Summary of Contents for Portege M100
Page 8: ...viii PORTEGE M100 Maintenance Manual 960 452 3 29 IEEE1394 Test Program 3 91 ...
Page 11: ...PORTEGE M100 Maintenance Manual 960 452 xi ...
Page 12: ...Chapter 1 Hardware Overview ...
Page 13: ...1 Hardware Overview 1 ii PORTEGE M100 Maintenance Manual 960 452 ...
Page 36: ...Chapter 2 Troubleshooting Procedures ...
Page 37: ...2 Troubleshooting Procedures 2 ii PORTEGE M100 Maintenance Manual 960 452 ...
Page 42: ...2 Troubleshooting Procedures PORTEGE M100 Maintenance Manual 960 452 2 vii ...
Page 102: ...Chapter 3 Tests and Diagnostics ...
Page 103: ...3 Tests and Diagnostics 3 ii PORTEGE M100 Maintenance Manual 960 452 ...
Page 107: ...3 Tests and Diagnostics 3 vi PORTEGE M100 Maintenance Manual 960 452 ...
Page 140: ...3 Tests and Diagnostics 3 14 Expansion Test 3 32 PORTEGE M100 Maintenance Manual 960 452 ...
Page 160: ...3 23 SETUP 3 Tests and Diagnostics PORTEGE M100 Maintenance Manual 960 452 3 51 13 PC Card ...
Page 204: ...Chapter 4 Replacement Procedures ...
Page 205: ...4 Replacement Procedures 4 ii PORTEGE M100 Maintenance Manual 960 452 ...
Page 313: ...Appendices Appendices ...
Page 314: ...Appendices App ii PORTEGE M100 Maintenance Manual 960 452 ...
Page 320: ...Appendices App viii PORTEGE M100 Maintenance Manual 960 452 ...
Page 326: ...Appendices Appendix A Handling the LCD Module A 6 PORTEGE M100 Maintenance Manual 960 452 ...
Page 336: ...Appendices Appendix B Board Layout B 10 PORTEGE M100 Maintenance Manual 960 452 ...
Page 382: ...Appendices Appendix G BIOS Rewrite Procedures G 2 PORTEGE M100 Maintenance Manual 960 452 ...
Page 384: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 PORTEGE M100 Maintenance Manual 960 452 ...
Page 386: ...Appendices Appendix I Reliability I 2 PORTEGE M100 Maintenance Manual 960 452 ...