Power Supply - Toshiba PORTEGE A200 series Maintenance Manual

1 Hardware Overview
1.6

Power Supply

The power supply supplies 19 different voltages to the system board.
The power supply micro controller 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.
Table 1-6 lists the power supply output specifications.
Table 1-6 Power supply output specifications(1/2)
Name Voltage [V]
PPV 1.308-0.748
PTV 1.05
1R35-P1V 1.35
1R25-P1V 1.25
MR1R25-
1.25
B1V
1R5-P1V 1.5
1R5-S1V 1.5
2R5-B2V 2.5
P3V 3.3
E3V 3.3
BT-P3V 3.3
S3V 3.3
P5V
1-16
CPU,GMCH, ICH4-M
CPU, GMCH, ICH4-M
GMCH
DDR-SDRAM termination
GMCH, DDR-SDRAM
TV, GMCH, IVH4-M
ICH4-M
GMCH, DDR-SDRAM
Clock Generator, Thermal Sensor, GMCH, SDRAM(SPD), TV,
IEEE1394, ICH4-M, AD1981B, mini-PCI, EC/KBC, LCD,
SD card Power, KINNERTH
YEBISUSS, PC Card Power, mini-PCI, MDC
Bluetooth
ICH4-M, EC/KBC, Flash Memory, PSC
CRT, ICH4-M, FL inverter, LEDs, HDD, ODD, KB, PAD,
5
Bluetooth Power
Use
PORTEGE A200 Maintenance Manual (960-499)
1.6 Power Supply