Toshiba A20-S259 Maintenance Manual - Page 40
Power Supply, Controls DC voltage output by AC Adaptor
View all Toshiba A20-S259 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 40 highlights
1 Hardware Overview 1.9 Power Supply 1.9 Power Supply The power supply distributes many different voltages to the system board and performs the following functions: 1. Input port management • 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 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 I2C 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 1-26 Satellite A20 Maintenance Manual (960-444)