Image Problems; Overview; Image Problem - Ricoh G165 Service Manual

Rev. 07/2008

4.3 IMAGE PROBLEMS

4.3.1 OVERVIEW

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).
Abnormal image at 24-mm intervals: Image transfer belt unit
Colored spots at 38-mm intervals: AIO cartridge (Development roller)
Abnormal image at 60-mm intervals: Transfer roller
Colored spots at 75-mm intervals: AIO cartridge (OPC drum)
Abnormal image at 110-mm intervals: Fusing unit (Pressure roller)
Abnormal image at 114-mm intervals: Fusing unit (Heat roller)

4.3.2 IMAGE PROBLEM

Print out a mono-color pattern (all K, C, M, or Y), which will clarify if the cause is a problem
with one of the AIOs, Image transfer belt, image transfer roller, or the fusing unit.
Occurs with 1-3 colors: AIO unit(s) failure
Occurs with all four colors: Image transfer belt, transfer roller or fusing unit failure
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4.3.3 SUPPLEMENTARY INFORMATION ON COLOR
REGISTRATION
The "Color Registration" in User Tools only includes a "fine adjustment". However, there
is also a color registration in SP mode for the G165, G166, and G167 models and
Engine Maintenance mode for the G181, G183, and G184 models. These modes are
used to perform both a fine adjustment and a coarse adjustment.
Therefore, if the color registration requires adjusting, perform the following procedure:
SM 4-19 G165/G166/G167/G181/G183/G184
Image Problems