White Horizontal Lines Or Bands; Missing Parts Of Images; Dirty Background - Ricoh M022 Service Manual

6. Troubleshooting

White Horizontal Lines or Bands

Symptom
White lines or bands appear in
images of all toner colors.

Missing Parts of Images

Symptom
6
Some parts of images are
missing.

Dirty Background

Symptom
Backgrounds of one CMYK color
are too dense.
Backgrounds of more than one
CMYK are too dense.color
720
CÓPIA NÃO CONTROLADA
Possible cause
Defective PCDU
Defective image transfer belt unit
Defective paper transfer roller
Possible cause
Defective PCDU
Defective image transfer belt unit
Defective paper transfer roller
Defective fusing unit
Possible cause
Defective PCDU
Defective HVPS
CÓPIA NÃO CONTROLADA
Necessary actions
Replace the PCDU.
Replace the image transfer belt
unit.
Replace the paper transfer roller.
Necessary actions
Replace the PCDU.
Replace the image transfer belt
unit.
Replace the paper transfer roller.
Replace the fusing unit.
Necessary actions
Replace the PCDU.
Replace the HVPS.