Power and PowerUp Modes
Real time clock battery
The Real Time Clock (RTC) battery provides power for the internal real time clock and calendar. It also maintains the system configuration.
The RTC battery is charged when the power of the computer is on.
If the RTC battery becomes completely discharged, the system loses this data and the real time clock and calendar stop working. The following message appears when you turn on the power:
S *** Bad RTC battery ***
Check system. Then press [F1] key
The computer’s RTC battery is a lithium ion battery and should be replaced only by your dealer or by a TOSHIBA service representative. The battery can explode if not properly replaced, used, handled or disposed of. Dispose of the battery as required by local ordinances or regulations.
You can change the setting of RTC by pressing F1 key. Refer to
Chapter 9, Troubleshooting, for details.
Care and use of the Battery Pack
The Battery Pack is a vital component of portable computing. Taking proper care of it will help ensure longer operating time on battery power as well as a longer life for your Battery Pack. Follow the instructions in this section carefully to ensure safe operation and maximum performance.
Safety precautions
Mishandling of batteries can cause death, serious injury or property damage. Carefully observe the following advisories:
Danger: Indicates an imminently hazardous situation, which could result in death or serious injury, if you do not follow instructions.
Warning: Indicates a potentially hazardous situation, which could result in death or serious injury, if you do not follow instructions.
Caution: Indicates a potentially hazardous situation, which if not avoided, may result in moderate or minor injury or property damage.
Note: Provides important information.
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