Image Is Partly Missing (Image Rendering Problem) - Kyocera TASKalfa 1800 Service Manual

(12) Image is partly missing.
Print example
Defective part
Paper
1
Drum unit
2
Transfer roller unit Check if the transfer roller is
3
Fusing
temperature set-
ting
4
1. Flawed or dirty drum unit.
2. Deformed or dirty transfer roller on its surface.
Check description
1. Check that the paper has
moisture absorbed.
2. Check that the paper has
stored in a humid place.
Check the print image on paper
has a problem at an interval
equivalent to the circumference
of the drum (94mm)
deformed or contaiminated on its
surface.
Check the value of the U161.
(see page 1-3-55)
Cause of trouble
1. If the paper is damp, replace.Choose a dry
place to store paper.
2. If necessary, install a cassette heater.
(see page 1-2-19)
If the print image on paper has a problem at an
interval equivalent to the circumference of the
drum, exexcute drum refreshing
(System Menu > Adjustment/Maintenance).
If the transfer roller unit is deformed or contam-
inated, replace the transfer roller unit.
1. Choose a paper weight appropriate for the
weight of the paper actually being used, if
the fusing temperature was set low using
U161.
2. Perform U161 for an appropriate fusing
temperature.
1-4-81
2NC/2NF/2NG/2NN/3P7/3P8/3P9
Corrective Action