Canon iR C3200 Series Service Manual page 820

Chapter 16
16.3.2.7.4 47mm horizontal line on Bk image: when the amount of toner deposited on the drum
changes abruptly over the entire length of the drum axis
Symptom
An abrupt change occurs in the amount of toner deposited over the entire length of the drum axis when
monochrome image is made. It is a 47-mm horizontal line.
Cause
An abrupt change (increase) has occurred in the amount of toner on the photosensitive drum, causing uneven
rotation of the drum and, ultimately, a discrepancy in exposure.
Field Remedy
Set'1'to the following in service mode:COPIER>OPTION>BODY>BK-4CSW.
16.3.2.7.5 47-mm horizontal line at the leading edge of paper
Symptom
A 47-mm horizontal line occurs in the leading edge of paper.
Cause
A yellow pattern made in blank (for progress in image) has occurred uneven rotation of the drum and ultimately,
causing a discrepancy in exposure.
Field Remedy
Set '2'to the following in service mode:COPIER>OPTION>BODY>TMC-SLCT.
16.3.2.7.6 An abrupt change occurs in the amount of toner deposited over the entire length of the
drum axis. It is a 100-mm horizontal line.
Symptom
An abrupt change occurs in the amount of toner deposited over the entire length of the drum axis. It is a 100-
mm horizontal line.
Cause
An abrupt change (increase) has occurred in the amount of toner on the intermediate transfer belt, causing
uneven rotation of the belt and, ultimately a discrepancy in primary transfer.
Field Remedy
Set '2'for the following in service mode: COPIER>OPTION>BODY>Y-PTN.adverse effect of setting it to '2'
the white area and the image on the paper tend to show a yellowish hue.
16-46
0002-3421
0002-3423
0002-3426