TravelMate 4400 Service Guide
Page 72
... the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). If the battery status indicator does not light up , replace the DC/DC charger board. If the charge indicator still does not light up , remove the battery pack and let it return to switch board FPC is still less...
... the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). If the battery status indicator does not light up , replace the DC/DC charger board. If the charge indicator still does not light up , remove the battery pack and let it return to switch board FPC is still less...