1 Hardware Overview
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Satellite L450/Pro L450/L450D/Pro L450D Maintenance Manual
1-12
1.4
Power Supply
The power supply unit provides constant voltage 19V for the system board and performs the
following functions:
1.
Power input monitor
Checks whether the AC adapter (DC power supply) is connected to the computer.
Checks whether the battery pack is connected to the computer.
Monitors the DC power supply input voltage (AC Adapter output voltage).
2.
Power supply's internal control
Turns on and off the battery pack charging power supply.
Issues a charging current instruction to the PWM control IC of the battery pack charging
power supply.
Controls the supply of DC power supply input (AC Adapter output) to the power supply
unit.
Controls the supply of power to the system block (load/logic circuit side).
Controls forced shutdown if the power supply malfunctions.
3.
Logic circuit control
Instructs the gate array to enable/disable tuning the power on.
Controls power-on/off operation.
4.
Status display
Battery indicator (in green or amber).
DC-IN indicator (in green color)
5.
External interface
Performs communication through the I2C bus (via the internal EC/KBC).
Transfers the power supply operation mode.
Содержание Satellite L450 series
Страница 1: ...Toshiba Personal Computer Satellite Maintenance Manual TOSHIBA CORPORATION CONFIDENTIAL ...
Страница 14: ...Chapter 1 Hardware Overview ...
Страница 17: ......
Страница 33: ...Chapter 2 Troubleshooting Procedures 2 ...
Страница 34: ......
Страница 82: ...3 Tests and Diagnostics 1 Chapter 3 Tests and Diagnostics ...
Страница 84: ...3 Tests and Diagnostics 3 3 19 1st HDD Test 33 3 19 2nd HDD Test 35 3 21 Read DMI 39 3 22 Write DMI 39 ...
Страница 98: ...3 Tests and Diagnostics 17 Memory Write Test Memory Read Write Test ...
Страница 104: ...3 Tests and Diagnostics 23 2 If the Magnetic switch test pass it will show below display ...
Страница 107: ...3 Tests and Diagnostics 26 If an error is detected and a test fails the following message displays ...
Страница 119: ...3 Tests and Diagnostics 38 If the picture shows as below it means he HDD function is NG ...
Страница 123: ...Chapter 4 Replacement Procedures ...
Страница 187: ...B 4 CONFIDENTIAL Low Cost Los Angeles 10AL Maintenance Manual PJP1 AC Adaptor conn PJP2 Battery conn ...
Страница 209: ...3 Thai TI Keyboard Figure TI keyboard 4 Korean KO Keyboard Figure KO keyboard ...
Страница 210: ...5 United Kingdom UK Keyboard Figure UK keyboard 6 US International UI Keyboard Figure UI keyboard ...
Страница 211: ...7 Hebrew HB Keyboard Figure HB keyboard 8 Danish DM Keyboard Figure DM keyboard ...
Страница 212: ...9 Swiss SW Keyboard Figure SW keyboard 10 Arabic ARE Keyboard Figure ARE keyboard ...
Страница 213: ...11 Czech CZ Keyboard Figure CZ keyboard 12 Russian RU Keyboard Figure RU keyboard ...
Страница 214: ...13 Portuguese PO Keyboard Figure PO keyboard 14 Slovakian SL Keyboard Figure SL keyboard ...
Страница 215: ...15 Italian IT Keyboard Figure IT keyboard 16 French FR Keyboard Figure FR keyboard ...
Страница 216: ...17 German GR Keyboard Figure GR keyboard 18 Greek GK Keyboard Figure GK keyboard ...
Страница 217: ...19 Canada French CF Keyboard Figure CF keyboard 20 Hungarian HG Keyboard Figure HG keyboard ...
Страница 218: ...21 Spanish SP Keyboard Figure SP keyboard 22 Turkish TR Keyboard Figure TR keyboard ...
Страница 219: ...3 Turkish F TF F Keyboard Figure TF F keyboard 24 Swedish SD Keyboard Figure SD keyboard ...
Страница 220: ...25 Belgian BE Keyboard Figure BE keyboard 26 Yugoslavian YU Keyboard Figure YU keyboard ...
Страница 221: ...27 Norwegian NW Keyboard Figure NW keyboard 28 Scandinavian ND Keyboard Figure ND keyboard ...
Страница 222: ...29 Canadian Multinational AC Keyboard Figure AC keyboard 30 Canadian Bilingual CB Keyboard Figure CB keyboard ...
Страница 223: ...31 Japanese JP Keyboard Figure JP keyboard 32 Romania RO Keyboard Figure RO keyboard ...
Страница 224: ...32 Bulgaria BU Keyboard Figure BU keyboard ...