Background Stain
Symptom Possible cause Necessary actions
The reverse side of the paper is
not clean.
Unclean paper transfer roller Clean the paper transfer roller.
Unclean paper path Clean the paper path.
Unclean registration roller Clean the registration roller.
Defective fusing unit Replace the fusing unit.
No Printing on Paper Edge
Symptom Possible cause Necessary actions
Images are not printed in the
areas around the paper edges.
Defective PCDU Replace the PCDU.
Defective toner cartridge Replace the toner cartridge.
Defective image transfer belt
unit
Replace the image transfer belt
unit.
Image transfer belt not
contacting PCDU
Check the image transfer belt
unit.
Image not centered when it should be
Symptom Possible cause Necessary actions
Images do not come to the
center.
Incorrect installation of paper Install the paper correctly.
Incorrect paper guide position
Adjust the paper guide
correctly.
Incorrect margin setting Adjust the margin setting.
Defective BICU Replace the BICU.
Incorrect installation of paper
tray
Uninstall the paper tray units
and re-install them.
6. Troubleshooting
718
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