Toshiba Satellite A80 Maintenance Manual page 28

1.5 Power Supply
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Battery and temperature
2. AC adaptor and battery check
The EC checks the following by A/D converted values:
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Battery installed
The EC checks the following by GPIO values:
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AC adaptor connected
3. Abnormal check
The EC determines whether the condition is abnormal, and if so, stores an error code into
the error register.
4. Input port management
The EC monitors the following input signal status:
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System power ON/OFF status
5. Beep and LED control
Beep is caused by the low battery status.
The EC controls the following two kinds of LED
DC IN LED (one color: Blue or Green(by sku))
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Green = indicates AC adaptor is connected
Battery LED (two colors: Green & Orange ? Blue & Orange )
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Blue or Green solid = The battery is fully charged.
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Orange = The computer is quick-charging the battery / The battery is low.
6. Power ON/OFF sequence
When power is turned on or off, the EC starts the power on or off sequence.
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SQ0-4 = power ON sequence
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SQ5-B = power OFF sequence
7. Battery charging control
The EC controls the following.
Satellite A80 Series Maintenance Manual
1 Hardware Overview
1-15