Problem At Regular Intervals; Blank Print - Ricoh D117 Service Manual

Troubleshooting Guide

6.3.2 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
Abnormal image at 33.6-mm intervals: Charge roller

Colored spots at 40.82-mm intervals: Image transfer roller

Colored spots at 20.9-mm intervals: Development roller

Abnormal image at 55.4 (center) or 55.0 (end)-mm intervals: Paper transfer roller

Colored spots at 75.4-mm intervals: OPC drum

Spots at 78.5-mm intervals: Pressure roller

Spots at 78.5-mm intervals: Fusing belt


6.3.3 BLANK PRINT

Symptom
No image is printed.
D117/D118
Possible cause
Defective laser unit
Defective PCDU
Defective image transfer
belt unit
Incorrect action of paper
transfer roller
Defective HVPS
Defective BICU
6-88
Necessary actions
Replace the laser unit.
Replace the PCDU.
Replace the image transfer
belt unit.
Check the guide and the
paper transfer roller.
Replace HVPS.
Replace the BICU.
SM