Toshiba 4000 User Guide

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If Something Goes Wrong
Resolving a hardware conflict
The power cable and AC adapter work correctly, but the 
battery won’t charge.
The main battery may not be making a good electrical connection. 
Turn off the computer, remove the battery and confirm that its 
contacts are clean. If they are dirty, clean the contacts with a soft, 
dry cloth and replace the battery.
The battery may be too hot or too cold to charge properly. Its 
temperature needs to be in the range 41 degrees to 95 degrees 
Fahrenheit (5 degrees to 35 degrees Celsius.) If you think this is 
the probable cause, let the battery reach room temperature and try 
again.
If the battery has completely discharged, it will not begin charging 
immediately. Leave the AC adapter connected, wait 20 minutes 
and see whether the battery is charging.
If the battery icon is glowing after 20 minutes, let the computer 
continue charging the battery for at least another 20 minutes 
before you turn on the computer.
If the battery icon doesn’t glow after 20 minutes, the battery may 
have reached the end of its useful life. Try replacing it.
The battery appears not to power the computer for as long 
as it usually does.
If you frequently recharge a partially charged battery, it may not 
charge fully. Let the battery discharge completely, then try 
charging it again.
Check the power-saving features in Power Saver. Have you added 
a device, such as a PC Card or memory module, that takes its 
power from the battery? Is your software using the hard disk 
more? Is the display power set to turn off automatically? Is the 
battery fully charged to begin with? All these conditions affect 
how long the charge lasts.