Toshiba A9 用户指南

106

Your computer has an internal real-time clock (RTC) battery. The 
RTC battery powers the System Time Clock and BIOS memory 
used to store your computer’s configuration settings. When fully 
charged, it maintains this information for up to a month when the 
computer is powered off.

The RTC battery may have become completely discharged while 
your computer was shipped, resulting in the following error 
message during startup:

BAD RTC BATTERY
BAD CHECKSUM (CMOS)
CHECK SYSTEM

The above error message may vary by computer model.

The RTC battery does not charge while the computer is turned off 
even when the AC adaptor is charging the computer. The RTC battery 
charges when the computer is powered on.

If the RTC battery is low, the real-time clock and calendar may 
display the incorrect time and date, or stop working.

To recharge the RTC battery, plug the computer into a live electrical 
outlet and leave the computer powered on for 24 hours.

It is seldom necessary to charge the RTC battery because it charges 
while the computer is on. If the RTC battery is low, the real-time 
clock and calendar may display the incorrect time and date or stop 
working.

When Hibernation mode is enabled and the RTC battery is 
completely discharged, a warning prompts you to reset the real-time 
clock.

The computer can be used while the RTC battery is being charged, 
although the charging status of the RTC battery cannot be 
monitored.

NOTE

NOTE