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1 Hardware Overview
1.5 Power Supply
18
TOSHIBA NB100 Maintenance Manual
1.5 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 Green).
y
Battery indicator (in Green).
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.
Содержание NB 100 Series
Страница 10: ...4 Replacement Procedure vi TOSHIBA NB100 Maintenance Manual Installing the Touch Pad Board 4 39 ...
Страница 12: ...Chapter 1 Hardware Overview TOSHIBA NB100 Maintenance Manual i ...
Страница 13: ...1 Hardware Overview ii TOSHIBA NB100 Maintenance Manual ...
Страница 20: ...1 1 Features 1 Hardware Overview Figure 1 2 Computer Block Diagram TOSHIBA NB100 Maintenance Manual 9 ...
Страница 21: ...1 Hardware Overview 1 1 Features Figure 1 3 System Board Configurations 10 TOSHIBA NB100 Maintenance Manual ...
Страница 32: ...2 Troubleshooting TOSHIBA NB100 Maintenance Manual 2 i 2 概要 Chapter 2 Troubleshooting ...
Страница 34: ...2 Troubleshooting TOSHIBA NB100 Maintenance Manual 2 iii ...
Страница 56: ...2 10Cooling Module 2 Troubleshooting TOSHIBA NB100 Maintenance Manual 2 21 ...
Страница 57: ...Chapter 3 Diagnostic Programs ...
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Страница 93: ...3 5 System Test 3 Diagnostic Programs TOSHIBA NB100 Maintenance Manual 33 ...
Страница 112: ...3 Diagnostic Programs 3 8 Video 52 TOSHIBA NB100 Maintenance Manual ...
Страница 116: ...3 Diagnostic Programs 3 10 Peripheral Check whether the orange led works normally 56 TOSHIBA NB100 Maintenance Manual ...
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Страница 124: ...Chapter 4 Replacement Procedures ...
Страница 125: ...4 Replacement Procedures 4 ii TOSHIBA NB100 Maintenance Manual ...
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Страница 175: ...6000 1 次 Appendices ...
Страница 184: ...Appendices Apx B Board Layout B 2 TOSHIBA NB100 Maintenance Manual Figure B 2 Board layout back ...