Image Quality
Phaser 3435 5/08 3-5
IQ 2 Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below. 
Figure 1 
No  Roller  Abnormal image period  Kind of abnormal image 
1  OPC Drum  75.5mm  White spot, Block spot 
2  Charge Roller  37.7mm  Black spot 
3  Supply Roller  44.9mm  Horizontal density band 
4  Develop Roller  35.2mm  Horizontal density band 
5  Transfer Roller  47.1mm  Black side contamination/transfer fault 
6  Heat Roller  77.8mm  Black spot and fuser ghost 
7  Pressure Roller  62.8mm / 50.24mm  Black side contamination