Ricoh SP 330SFN, Service Manual

Page: 235 / 333

Image Quality
SM 6-27 M0C3/M0C4/M0C5/M0C6/M0C7
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6.6 IMAGE QUALITY
6.6.1 PROBLEM AT REGULAR INTERVALS
Image problems may appear at regular intervals that depend on the circumference of certain
components. The following diagram shows the possible symptoms (black or white dots at
regular intervals).
1. Paper feed direction
2. Problems at regular intervals
Problems Intervals Defective parts
Problems with the printed result
(other than black or white dots)
29.8 mm Charge roller
37.7 mm Registration roller
45.8 mm Transfer roller
94.2 mm Fusing unit (Pressure roller)
93.1 mm Fusing unit (Hot roller)
100.5 mm Paper feed roller
Black or white dots 27.0 mm AIO (Development roller)
75.3 mm AIO (OPC drum)