Xerox WorkCentre Pro 423 Service Manual page 268

WorkCentre Pro 423/428
Moiré
C - 23
Copy sample
Symptom
Moiré
(Copied patterns have interference fringe when the printed Document is copied.)
Cause
Moiré is generated when a printed
Document is copied in the auto
density or manual density mode.
Moiré is generated when a printed
Document is copied for two
generations in the photo mode.
Moiré is generated when a printed
Document is copied in the photo
mode.
j0hn3026
Corrective action
• Recommend the customer to use photo mode
when a patterned Document is copied.
• Instruct the customer that copying for two
generations may cause Moiré.
• Recommend
the customer to
magnification.
• Rotate the Document setting. (90 degrees)
3-24 CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING
Poor fusing
C - 24
Copy sample
Symptom
Poor fusing
(Images on copies that can easily be removed by rubbing using a finger.)
Cause
Moisture of paper/special paper
Fuser
• Too low Fuser Temperature
setting
change
Fuser
• Flaws in or deformation of Heat
Roller or Pressure Roller
Power
• Power voltage is too low.
3.3 Image Quality Troubleshooting
j0hn3027
Corrective action
• Replace paper.
• Instruct the customer to store paper in dry places.
• Check NVM setting.
(Diag: [20-100 to 106])
• ReplaceFuser.
• Change the voltage.