Kyocera TASKalfa 6501i Service Manual page 586

(23) Dirty reverse side of paper.
Print example
Defective part
Conveying guide
1
Fuser pressure
roller
2
Transfer belt unit
3
Check description
Check if the conveying guide is
dirty with toner.
Check that a foreign object is
stuck on the fuser pressure
roller.
Check if the transfer belt is dirty
with toner on its surface.
If the conveying guide is dirty with toner, clean
the conveying guide, the developer unit and
the cooling ducts.
1. If a foreign object exists, clean the fuser
pressure roller.
2. If the paper and the paper weight setting do
not match, choose the proper paper weight
setting.
1. Clean the transfer belt.
2. Reset U106 Bias settings to its default.
1-4-226
Corrective Action
2N8/2N7