Troubleshooting for Image Quality Problems
D0CA/D0C9/D0C8/D0CB 6-150 SM
Symptom Possible cause Necessary actions
They get weaker and weaker. Defective
transfer unit
Replace the
transfer unit.
6.12.20 UNFUSED OR PARTIALLY FUSED PRINTS
Symptom Possible cause Necessary actions
Some parts of images are not
fused very well.
Non-standard paper in
use
Use recommended paper.
Incorrect media type
mode
Select an appropriate mode for
the media.
Defective fusing unit Replace the fusing unit.
6.12.21 IMAGE SKEW
Symptom Possible cause Necessary actions
Images are
skewed
Incorrect
installation of
paper
Install the paper correctly.
Incorrect paper
guide position
Adjust the paper guide correctly.
• When adjusting the paper width, use the right side
guide only, with the green clip. Do not hold the left
side guide at this time, or skew will occur.
Defective
registration roller
Repair the paper feed unit.
Incorrect action of
paper transfer
roller
Check the paper transfer roller.
Defective BiCU
(PCB1)
Replace the BiCU (PCB1).
Incorrect
installation of
paper tray
Uninstall the paper tray units and re-install them.
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