Toshiba Tecra A3 Maintenance Manual page 29

1 Hardware Overview
6. Power ON/OFF sequence
When power is turned on or off, the EC starts the power on or off sequence.
•
SQ0-4 = power ON sequence
•
SQ5-B = power OFF sequence
7. Battery charging control
The EC controls the following.
• The quick charging ON/OFF
• The detection of full charge
8. Detection of the low battery
The EC detects the low battery point by the gas gauge.
•
LB10M = The system will be driven by the battery for 12 more minutes.
•
LB0
•
LB1
•
LB2
9. New battery installation
When a new battery is installed, the EC communicates with the E
read information of the newly installed battery.
10. Battery capacity calculation
The EC reads battery remaining and percentage capacity from the battery through SMBus.
1-20
= The battery won't be able to drive the system after 3 minutes.
= The battery can drive the system only during the suspend process.
= The battery cannot drive the system.
1.5 Power Supply
2
PROM in the battery to
Tecra A3/S2 Series Maintenance Manual