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1.7 Power Supply
1 Hardware Overview
libretto U100 Maintenance Manual
(960-520)
[CONFIDENTIAL]
1-19
1.7 Power
Supply
The power supply supplies different voltages to the system board.
The power supply microcontroller has the following functions.
1.
Judges that the DC power supply (AC adapter) is connected to the computer.
2.
Detects DC output and circuit malfunctions.
3.
Controls the battery icon, and DC IN icon.
4.
Turns the battery charging system on and off and detects a fully charged battery.
5.
Turns the power supply on and off.
6.
Provides more accurate detection of a low battery.
7.
Calculates the remaining battery capacity.
8.
Controls the transmission of the status signal of the main battery.
The power supply output rating is specified in Table 1-9.
Table 1-9 Power supply output rating (1/2)
Name Voltage
(V)
Use
PPV 0.940
–0.81
CPU (VCC)
PTV 1.05
CPU (VCCP), GMCH, ICH4-M
1R8-P1V 1.8
CPU (VCCA0)
1R35-P1V 1.35/1.2
GMCH (1.2V in power saving mode)
A1R35-P1V 1.35/1.2
GMCH (VCCASM) (1.2V in power saving mode)
2R5-B2V 2.5
GMCH, DDR-SDRAM
Q2R5-B2V 2.5
GMCH (VCCQSM)
MR1R25-B1V 1.25
SO-DIM DDR-SDRAM (VREF), GMCH
1R25M-B1V 1.25
On Board DDR SDRAM (VREF)
1R5-S1V 1.5
ICH4-M
S3V 3.3
ICH4-M, EC/KBC
M5V 5
ICH4-M, Temperature reset IC, LEDs
Содержание libretto U100 Series
Страница 10: ...x CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 38: ...1 Hardware Overview 1 9 AC Adapter 1 24 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 39: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Страница 40: ...2 Troubleshooting Procedures 2 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 44: ...2 Troubleshooting Procedures 2 vi CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 113: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Страница 114: ...3 Tests and Diagnostics 3 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 3 ...
Страница 220: ...3 Tests and Diagnostics 3 29 SETUP 3 102 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 221: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
Страница 222: ...4 Replacement Procedures 4 ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 226: ...4 Replacement Procedures 4 vi CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 295: ... CONFIDENTIAL Appendices ...
Страница 296: ...Appendices App ii CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 304: ...Appendices App x CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 310: ...Appendices Appendix A Handling the LCD Module A 6 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 324: ...Appendices Appendix B Board Layout B 14 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 366: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 368: ...Appendices Appendix F Wiring Diagrams F 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 372: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...
Страница 374: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL libretto U100 Maintenance Manual 960 520 ...