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Chatper 1 Hardware Overview
30 Satellite L20 Maintenance Manual (960-Q01)
1.7 Power Supply
The power supply supplies 23 different voltages to the system board.
The power supply microcontroller has the following functions.
1. Judges if the DC power supply (AC adapter) is connected to the computer.
2. Detects DC output and circuit malfunctions.
3. Controls the battery icon, and DC IN icon.
4. Turns the battery charging system on and off and detects a fully charged battery.
5. Turns the power supply on and off.
6. Provides more accurate detection of a low battery.
7. Calculates the remaining battery capacity.
8. Controls the transmission of the status signal of the main battery.
Table 1-11 lists the power supply output specifications.
Table 1-9 Power supply output rating
Name
Power supply （Yes/No）