Owner manual

6-4 User’s Manual
Power and Power-Up 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.
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:
When this error appears, the following action is recommended.
1. Plug in AC over 24 hours.
2. Press F2 to enter BIOS setup menu.
3. Set correct time and date.
■ The battery pack is a lithium ion battery, which can explode if not
properly replaced, used, handled or disposed of. Dispose of the battery
as required by local ordinances or regulations. Use only batteries
recommended by TOSHIBA as replacements.
■ Do not remove the Battery Pack while the computer is in Standby
mode. Data is stored in RAM, so if the computer loses power,
it will be lost.
■ Battery type (depending on the model purchased):
PA3395U-1BAS/PA3395U-1BRS
ERROR 0271:Check date and time settings.
WARNING 0251:System CMOS checksum bad -
Default configuration used.
Press <F1> to resume, <F2> to Setup.
The computer's RTC battery is a lithium 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.
If you still see error message after above action, please get contact with
TOSHIBA service.