Toshiba NB505 User Manual

Page of 137
User’s Manual
5-3
NB500/NB505/NB520/NB525/NB550D/NB555D Series
Power indicator
Check the Power indicator to determine the power status of the computer - 
the following indicator conditions should be noted:
Battery
This section explains battery types, use, recharging methods and handling.
Battery types
The computer has different types of batteries.
Battery pack
When the AC adaptor is not connected, the computer's main power source 
is a removable lithium ion battery pack, also referred to in this manual as 
the main battery. You can purchase additional battery packs for extended 
use of the computer away from an AC power source although you should 
not change the battery pack while the AC adaptor is connected.
Before you remove the battery pack, save your data and shut down the 
computer, or place the computer into Hibernation Mode. Please be aware 
that, when placing the computer into Hibernation Mode, the contents of 
memory will be saved to the hard disk drive, although for safety sake, it is 
best to also save your data manually.
Real Time Clock (RTC) battery
The Real Time Clock (RTC) battery provides power for the internal real 
time clock and calendar function and also maintains the system 
configuration while the computer is turned off. If the RTC battery becomes 
completely discharged, the system will lose this information and the real 
time clock and calendar will stop working - in this instance the following 
message will be displayed when you turn on the power:
S
ERROR 0271: Check date and time settings.     WARNING 
0251: System CMOS checksum bad - Default configuration 
used.   Press <F1> to resume, <F2> to Setup.  
You can change the Real Time Clock settings by turnin on the computer 
while pressing the F2 key and then release F2 key when the TOSHIBA 
Green
Indicates power is being supplied to the computer 
and the computer is turned on.
Blinking amber
Indicates that the computer is in Sleep Mode and 
that there is sufficient power available (AC adaptor 
or battery) to maintain this condition. In Sleep 
Mode, this indicator will turn on for two seconds 
and off for two seconds.
No light
Under any other conditions, the indicator does not 
light.