5B1.6 Pow
ly
1 Hardware Overview
er Supp
Satellite L350D/Satellite Pro L350D/EQUIUM L350D/SATEGO L350D Maintenance Manual
21
1.6 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.
Summary of Contents for Satellite L350D series
Page 13: ...Chapter 1 Hardware Overview ...
Page 63: ...Chapter 3 Diagnostic Programs ...
Page 66: ......
Page 130: ...Chapter 4 Replacement Procedures 4 1 ...
Page 193: ...6000 1 次 Appendices ...