Toshiba PSLC8U-03L023 Maintenance Manual - Page 35
Power Supply, Hardware Overview - ac adapter
UPC - 883974187171
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1.7 Power Supply 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 Green or AMBER). y Battery indicator (in Green 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. Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300 Maintenance Manual 19