Periodic Defective Image - Xerox Phaser 3450 Service Manual

6.5 Periodic Defective Image

If the delinquent image regularly occurs in the printed-paper, it is due to delinquent or damaged roller.
Refer to the table in below and check the condition of the roller.
No Roller
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Developing Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
R11
R12
Defective image
95 mm
38 mm
45 mm
49 mm
57 mm
82 mm
92 mm
6
7
솔레노이드 솔레노이드
<Rollers Layout>
Typical defect
white spot on black image or black spot
light or dark horizontal image band
horizontal image band
Black spot and image ghost
black spot on the backside
8
2
3
4
1
5
OPC Drum
1
Charge Roller
2
Supply Roller
3
Developing Roller
4
Alignment & Adjustments
black spot
image ghost
Transfer Roller
5
Heat Roller
6
Pressure Roller
7
Cleaning Roller
8
Service Manual
6-19