Boards 
J012/J013/J014 3-44  SM 
 
3.6.4 DUPLEX UNIT DETECTION BOARD 
 
Preparation: 
  Remove platen or ADF. ( 3.2.4, 3.2.5) 
  Raise the scanner unit to full upright. ( 3.2.7) 
  Remove: (1) paper cassette, (2) paper output tray, (3) right cover, (4) left cover, (5) 
scanner unit, (6) rear cover ( 3.2.8, 3.2.10, 3.2.12, 3.2.7, 3.2.15) 
1.  Remove screws [1], [2] (x2).  
2.  Disconnect the PCB [3] (x1) 
Rev. 09/09/2009