Interchange Unit (D371) 
D017/D018/D019/D020 1-28  SM 
 
2.  Open the right cover [A] of the copier. 
3.  Remove the right upper cover [B] ( x 3) 
4.  Remove the front right cover [C] (hook) 
5.  Slide out the exit cover [D]. 
 
6.  Install the interchange unit [A] (x 2). 
7.  Connect the two harnesses [B].