G160 Service Manual
Symptom
White lines or bands appear in
images of all toner colors.
Missing Parts of Images
Symptom
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
Partial CMY Color Dots
Symptom
Unexpected dots of the same
color appear at irregular
intervals.
Dark Irregular Streaks on Prints
Symptom
Unexpected streaks appear at
irregular intervals.
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
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23-Feb-06
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 (1 or 2).
Necessary actions
Replace the PCU.
Replace the transfer belt unit.
Replace the fusing unit.
Necessary actions
Replace the transfer belt unit.