Swapping the Engine Unit 
J012/J013/J014 3-68  SM 
3.11 SWAPPING THE ENGINE UNIT 
The engine unit includes the main engine components and does not include the: 
 ADF. Unit  
 Scanner unit 
  Main CTL board in the scanner unit 
To swap the engine unit: 
1.  Remove the ADF. ( 3.2.5)   
2.  Remove the scanner unit ( 3.2.14)   
3.  Replace the engine unit.