Ricoh Gim-MF1a, Field Service Manual

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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 Intervals Defective parts
Problems with the printed result
(other than black or white dots)
29.9mm Charge roller
37.7mm Registration roller
45.8mm Image transfer roller
112mm Fusing pressure roller
94mm Fusing roller
100.5mm Paper feed roller
Black or white dots
35.6mm Development roller
94.4mm Drum
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.
6. Troubleshooting
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