Iq 18 Periodic Defective Image - Xerox PHASER 3124 Service Manual

Image Quality

IQ 18 Periodic Defective Image

If a mark or other printing defect occurs at regular intervals on the page it may be caused by a
damaged or contaminated roller. Measure the repetition interval and refer to the table below to
identify the roller concerned.
No
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Developing Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
8 Feed Roller
3-20
Table 1: Periodic Defective Image
Roller Defective Image
75.5mm (2.97 inches)
37.7mm (1.48 inches)
47.5mm (1.87 inches)
35.2mm (1.39 inches)
46.2mm (1.82 inches)
77.7mm (3.06 inches)
75.4mm (2.97 inches)
57mm (2.24 inches)
White spots on a black image or vice versa
Black spots
Light or dark horizontal image bands
Horizontal image bands
Ghost image
Black spots or ghost image
Black spots on the back page
Black spots
09/06
Typical Defect
PHASER 3124 / PHASER 3125