Canon iR C3200 Series Service Manual page 801

Cause
When the machine is left alone for a long time, the level of charge on the toner tends to decrease.
Field Remedy
Generate about 10 prints of solid images of the color in question using A3 paper.
16.3.2.4.9 Color shift/Uneven density (rough texture): when continuously generating an image with
low color ratio
Symptom
The hues are not appropriate or the density is not even when images with a low color ratio have been generated
continuously.
Cause
The toner inside the developing assembly has remained unconsumed without being stirred for a long time, thus
increasing the charge of the toner and, ultimately, causing re-transfer or mixing of colors.
Field Remedy
Set '1'to the following in service mode: COPIER>OPTION>BODY>DEVL-PTH.
Adverse effect of setting it to'1' the life of the toner container will decrease.
16.3.2.4.10 Yellow spots or yellow ghosting on skin colored-area
Symptom
Yellow spots or yellow ghosting on skin colored-area
Description
This symptom appears only on copied images, not on printed ones.
Cause
Main Controller PCB Ass'y is faulty.
Field Remedy
Replace the Main Controller PCB Ass'y with a new one.
16.3.2.4.11 Light density at center of halftone image: appreciable after feeding transparencies in a
high humidity environment
Symptom
In a high humidity environment, the middle of a halftone image tends to become low in density after passage of
a transparency.
Cause
The coating agent on the surface of the transparency sticks to the ITB, making transfer of toner from the ITB to
paper difficult.
Chapter 16
0002-3406
0002-3590
0002-4638
16-27