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User’s Manual 6-5
Satellite U500/U500D, Satellite Pro U500/U500D
If the following message is displayed on the LCD:
ERROR 0271: Check date and time settings.
WARNING 0251: System CMOS checksum
bad-Default configuration used.
Press [F1] to resume, [F2] to setup.
The charge in the RTC battery is getting low or has been exhausted. You
will need to set the date and time within the BIOS setup using the following
steps:
1. Press F2 key - the BIOS setup screen will be displayed.
2. Set the date in System Date.
3. Set the time in System Time.
4. Press F10 key. Confirmation message will appear.
Press Enter key. BIOS setup will terminate and the computer will be
rebooted.
Care and use of the battery pack
This section provides the important safety precautions in order to handle
your battery pack properly.
Refer to the enclosed Instruction Manual for Safety and Comfort for
detailed precautions and handling instructions.
After configuring the date and time it is recommended that you switch the
computer on and then leave it in this state so that the Real Time Clock
battery can be charged.
■ Make sure the battery is securely installed in the computer before
attempting to charge the battery pack. Improper installation could
generate smoke or fire, or cause the battery pack to rupture.
■ Keep the battery pack out of reach of infants and children. It can cause
injury.
■ The battery pack is lithium ion battery, which can explode if not
replaced, used, handled or disposed of properly. Dispose of the battery
as required by local ordinances or regulations. Use only batteries
recommended by TOSHIBA as replacements.
■ Charge the battery pack only in an ambient temperature between 5 and
35 degrees Celsius. Otherwise, the electrolyte solution might leak,
battery pack performance might deteriorate and the battery life might
be shortened.
■ Never install or remove the battery pack without first turning off the
power and disconnecting the AC adaptor. Never remove the battery
pack while the computer is in Sleep Mode. Data could be lost.