Ricoh M281 Series Service Manual page 555

3. Select [Drum Refresh] -> Press [OK]
4. Select [OK].
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).
[A]: Paper feed direction
[B]: Problems at regular intervals

29.9 mm intervals: Charge roller

36.8 mm intervals: Registration roller

44.9 mm intervals: Development roller

61.2 mm intervals: Transfer roller

94.2 mm intervals: Drum

94.2 mm intervals: Pressure roller

109.9 mm intervals: Hot roller
SM 6-117
Troubleshooting Guide
D255/D256/M281/M282