White Horizontal Lines Or Bands; Missing Parts Of Images; Dirty Background; Partial Cmy Color Dots - Ricoh G092 Service Manual

4.3.7 WHITE HORIZONTAL LINES OR BANDS

Symptom
White lines or bands appear
in images of all toner colors.
They are vertical to the
paper feed direction.

4.3.8 MISSING PARTS OF IMAGES

Symptom
Some parts of images are
missing.

4.3.9 DIRTY BACKGROUND

Symptom
Backgrounds are too dense.
Of one CMYK color
Of more than one CMYK
color

4.3.10 PARTIAL CMY COLOR DOTS

Symptom
Unexpected dots of the
same color appear at
irregular intervals.

4.3.11 DARK IRREGULAR STREAKS ON PRINTS

Symptom
Unexpected streaks appear
at irregular intervals.
SM
Possible cause
Defective PCU
Defective transfer belt unit
Defective transfer roller
Possible cause
Defective PCU
Defective transfer belt unit
Defective transfer roller
Defective fusing unit
Possible cause
Defective PCU
Defective high voltage supply
board
Possible cause
Defective PCU
Defective transfer belt unit
Defective fusing unit
Possible cause
Defective transfer belt
4-13
TROUBLESHOOTING GUIDE
Necessary actions
Replace the PCU.
Replace the transfer belt
unit.
Replace the transfer roller.
Necessary actions
Replace the PCU.
Replace the transfer belt
unit.
Replace the transfer roller.
Replace the fusing unit.
Necessary actions
Replace the PCU.
Replace the high voltage
supply board.
Necessary actions
Replace the PCU.
Replace the transfer belt
unit.
Replace the fusing unit.
Necessary actions
Replace the transfer belt
unit.
G081/G092