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6.3.18 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.
6.3.19 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.
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