FIC a440 服务手册

 

Hardware Functional Overview 

 
4-14 

FIC A440 Series Service Manual 

4.16

4.16

4.16

4.16    Power Subsystem

Power Subsystem

Power Subsystem

Power Subsystem    

The Power Subsystem consists of the following major sections: 

4.16.1  AC Power Adapter 

The computer is equipped with a 50W universal AC power adapter that converts AC voltage 
(100 to 240VAC, 47 to 63Hz) into DC voltage used to operate the notebook and charge the 
batteries.  
 

4.16.2  Internal Battery Pack 

The computer utilizes Nickel Metal Hydride (NiMH) or Lithium-Ion (Li-Ion) that provides 
DC power for the notebook and real time clock battery on the motherboard when the AC 
Adapter is not connected to the computer. 
 
The normal charging time for the Li-Ion battery is around 2.5 hours when computer is turn off 
while it should take around 8 hours when the computer is running. Running time of battery is 
around 2 to 2.5 hours. 

4.16.3  DC-DC Module of Motherboard 

The DC-DC module receives approximately 12VDC from the battery pack and uses this input 
voltage to generate multiple regulated output voltages to provide power for all internal 
notebook board assemblies.  

4.16.4  LCD Inverter Board Assembly 

The LCD Inverter Board Assembly is located in the LCD Panel Assembly. It converts the 
+12VDC input directly from the Battery Pack into a high voltage AC output used to light the 
CCFT (Cold-Cathode Fluorescent Tube).