Problem At Regular Intervals - Ricoh Gim-MF1a Field Service Manual

6. Troubleshooting

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 or other
problems).
Problems
Problems with the printed result
(other than black or white dots)
Black or white dots
The LED head contains 26 LED chips, each covering a line 8 mm wide. If a line 8 mm wide extending in
the paper feed direction appears, an LED chip may be damaged. If so, replace the LED head.
178
Intervals
29.9mm
37.7mm
45.8mm
112mm
94mm
100.5mm
35.6mm
94.4mm
Defective parts
Charge roller
Registration roller
Image transfer roller
Fusing pressure roller
Fusing roller
Paper feed roller
Development roller
Drum