Toshiba NB500 Series User Manual page 100

Problem
AC adaptor doesn't
power the computer
Battery
If you suspect a problem with the battery, you should check the status of
the DC IN/Battery indicator.
Problem
Battery doesn't
power the computer
User's Manual
NB500/NB505/NB520/NB525/NB550D/NB555D Series
Procedure
Check the connections to make sure that the power
cord/adaptor is firmly connected to the computer
and a working power outlet.
Check the condition of the cord and terminals. If the
cord is frayed or damaged it should be replaced,
while if the terminals are soiled, they should be
cleaned with a clean cotton cloth.
If the AC adaptor still does not power the computer,
you should contact your reseller, dealer or service
provider.
Procedure
The battery may be discharged - connect the AC
adaptor to recharge the battery.
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