Missing CMY Color
Symptom Possible cause Necessary actions
C, M, or Y is missing. Defective PCDU Replace the PCDU.
Loose connection between
printer cartridge and BCU
Replace the drum positioning
cover.
Image transfer belt not
contacting PCDU
Check the belt tension unit.
Defective the drum motor: CMY Replace the drum motor: CMY.
Defective BCU Replace the BCU.
Light Print
Symptom Possible cause Necessary actions
Printed images are too weak. Loose connection between
paper transfer roller and HVPS
Check the connection between
the paper transfer roller and the
HVPS.
Dust in the laser beam path Clean the laser beam path.
Image transfer belt not
contacting PCDU
Check the image transfer belt
unit.
Defective PCDU Replace the PCDU.
Defective paper transfer roller Repair the paper transfer roller.
Defective fusing unit Replace the fusing unit.
Defective BCU Replace the BCU.
Repeated Spots or Lines on Prints
Image problems may appear at regular intervals that depend on the circumference of certain
components.
The following diagram shows the possible symptoms (black or white dots at regular intervals).
6. Troubleshooting
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