Ricoh G104, Service Manual

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TROUBLESHOOTING GUIDE
G104 4-24 SM
4.3.7 WHITE HORIZONTAL LINES OR BANDS
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
White lines or bands appear
in images of all toner colors.
Defective transfer roller Replace the transfer roller.
4.3.8 MISSING PARTS OF IMAGES
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
Defective transfer roller Replace the transfer roller.
Some parts of images are
missing.
Defective fusing unit Replace the fusing unit.
4.3.9 DIRTY BACKGROUND
Symptom Possible cause Necessary actions
Backgrounds are too dense.
Of one CMYK color Defective PCU Replace the PCU.
Of more than one CMYK
color Defective high voltage supply
board Replace the high voltage
supply board (1 or 2).
4.3.10 PARTIAL CMY COLOR DOTS
Symptom Possible cause Necessary actions
Defective PCU Replace the PCU.
Defective transfer belt unit Replace the transfer belt
unit.
Unexpected dots of the
same color appear at
irregular intervals.
Defective fusing unit Replace the fusing unit.
4.3.11 DARK IRREGULAR STREAKS ON PRINTS
Symptom Possible cause Necessary actions
Unexpected streaks appear
at irregular intervals. Defective transfer belt Replace the transfer belt
unit.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA