Toshiba QOSMIO F20

1.7 Power Supply 1 Hardware Overview
QOSMIO F20 Maintenance Manual (960-526) [CONFIDENTIAL] 1-27
1.7 Power Supply
The power supply supplies twenty-five different voltages to the system board.
The power supply microcontroller has the following functions.
1. Judges if 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 1-9 lists the power supply output rating.
Table 1-9 Power supply output rating (1/2)
Power supplied ( Yes/No)
Name
Voltage
[V] Power OFF
Suspend mode
Power OFF
Boot mode
No
Battery
Use
PPV
1.308-
0.748
No No No
CPU
PTV
1.05
No No No
CPU, MCH/GMCH, ICH6-M
1R5-P1V 1.5
No No No
CPU, MCH/GMCH, ICH6-
M,WW Tuner, (ExpressCard)
1R8-B1V 1.8
Yes No No
MCH/GMCH, DDR2-SDRAM
2R5-P2V 2.5
No No No
MCH/GMCH, ICH6-M
MR0R9-B0V 0.9
Yes No No
MCH/GMCH, DDR2-SDRAM
0R9-P0V 0.9
No No No
DDR2-SDRAM
ICH1R5-S1V 1.5
Yes Yes No
ICH6-M
ICH-S3V 3.3
Yes Yes No
ICH6-M
ICH-S5V 5
Yes Yes No
ICH6-M
P3V 3.3
No No No
Clock Generator, Thermal
Sensor, SDRAM (SPD),
ICH6-M,PCI7411, Mini-PCI,
WW Tuner, FWH, AD1981B,
Super I/O,GPU,
(ExpressCard)
E3V 3.3
Yes Yes/No No
PCI7411, PC Card Power,
IEEE1394, Mini-PCI, MDC,
ICH6-M, (ExpressCard)