Image Transfer 
SM 4-25 M018/M019 
Replacement 
& 
Adjustment 
 
 
6.  Remove the mylar fixing three hooks of the waste toner bottle set sensor. 
7.  Waste toner bottle set sensor [C] (hooks, x 1) 
 
  When reinstalling the waste toner bottle set sensor, connect it to the white 
connector of the harness. 
http://www.manuals4you.com