6-7 
 
2.  Unscrew the two M3 nuts to remove the battery interface board. 
 
 
 
6.4 Disassembling the Front Housing Assembly 
 
NOTE 
  To disassemble the equipment, place the equipment on a work surface free 
from foreign material, avoiding damaging the screen. 
  Remember to install the screen support pad properly during reassembly. 
  Operations relating to optional parts may not apply to your equipment. 
 
 
6.4.1 Removing the Main Board 
  Disconnect the cable between the main board and keypad board. Unscrew the 
four M3×6 screws and remove the main board, as shown below: