Toshiba NB505 Manuel D’Utilisation

Page de 137
User’s Manual
6-7
NB500/NB505/NB520/NB525/NB550D/NB555D Series
Real Time Clock
Keyboard
Keyboard problems can be caused by the setup and configuration of the 
computer - please refer to the sectio
 in Chapter 3, 
Operating Basics, for further information.
Problem
Procedure
The following 
message is 
Displayed on the 
screen:
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 Real Time Clock (RTC) battery 
has run out - you will need to set the date and time 
in the BIOS setup application by using the following 
steps:
1. Turn on the computer.
2. Press the F2 key when the TOSHIBA Leading 
Innovation >>>  screen appears - the BIOS 
setup application will load.
3. Set the date in the System Date field.
4. Set the time in the System Time field.
5. Press F10 - a confirmation message will be 
displayed.
6. Press the ENTER key - the BIOS setup 
application will end and the computer will 
restart.
Problem
Procedure
Some letter keys 
produce numbers 
Check that the numeric keypad overlay is not 
activated - press the FN + F11 hot key and try 
typing again.
Output to screen is 
garbled
Please refer to your software's documentation to 
ensure that its is not remapping the keyboard in any 
way (remapping involves changing or reassigning 
the function of each key).
If you are still unable to use the keyboard, you 
should contact your reseller, dealer or service 
provider.