Development 
SM 3-21 G179 
Replacement 
Adjustment 
3.6 DEVELOPMENT 
3.6.1 DEVELOPMENT FILTER 
1. PCDU ( PCDU (Photoconductor and Development Unit)) 
2.  Open the PCDU. ( Drum) 
 
3.  Upper development cover [A] ( x2) 
4.  Development filter [B] 
3.6.2 DEVELOPMENT ROLLER 
1. PCDU ( PCDU (Photoconductor and Development Unit)) 
2.  Open the PCDU. ( Drum) 
3.  Upper development cover ( Development Filter) 
 
4.  Development roller [A] 
 
  Work carefully to avoid scratching or nicking the development roller.