1.8 Batteries
1 Hardware Overview
1.7 Power
Supply
The power supply unit provides many different voltages for the system board and performs the
following functions:
1.
Power input monitor
y
Checks whether the DC power supply (AC adapter) is connected to the computer.
y
Checks whether the battery pack is connected to the computer.
y
Monitors the DC power supply input voltage (AC Adapter output voltage).
2.
Power supply's internal control
y
Turns on and off the battery pack charging power supply.
y
Issues a charging current instruction to the PWM control IC of the battery pack charging
power supply.
y
Controls the supply of DC power supply input (AC Adapter output) to the power supply
unit.
y
Controls the supply of power to the system block (load/logic circuit side).
y
Controls forced shutdown if the power supply malfunctions.
3.
Logic circuit control
y
Instructs the gate array to enable/disable tuning the power on.
y
Controls power-on/off operation.
4.
Status display
y
Turns on the Power LED (in Blue or AMBER).
y
Battery indicator (in Blue or AMBER or AMBER Flash).
5.
External interface
y
Performs communication through the I2C bus (via the internal EC/KBC).
y
Transfers the power supply operation mode.
6.
Output monitor
y
Monitors the voltage output to the system block (load/logic circuit side).
y
Monitors the voltage, over voltage, input/output current of the battery pack.
y
Monitors the internal temperature of the battery pack.
y
Monitors the supply voltage from the AC adapter.
Qosmio F40/F45 Maintenance Manual
27
Summary of Contents for Qosmio F40
Page 6: ...Chapter 1 Hardware Overview ...
Page 7: ...1 Hardware Overview 1 1 Features Qosmio F40 F45 Maintenance Manual 2 ...
Page 29: ...1 Hardware Overview 1 5 HD DVD ROM Qosmio F40 F45 Maintenance Manual 24 ...
Page 35: ...2 Troubleshooting 2 概要 Chapter 2 Troubleshooting 2 i Qosmio F40 F45 Maintenance Manual ...
Page 64: ...Chapter 3 Diagnostic Programs ...
Page 67: ......
Page 119: ...3 Diagnostic Programs 3 10 Peripheral 52 QosmioF40 F45 dynabook Qosmio F40 Maintenance Manual ...
Page 131: ...Chapter 4 Replacement Procedures 4 1 ...
Page 132: ...4 Replacement Procedures 4 ii Qosmio F40 F45 Maintenance Manual ...
Page 215: ...6000 1 次 Appendices ...