Symptom | Possible cause | Necessary actions |
|---|---|---|
A dark line in one CMY color appears. The line is parallel to the paper feed direction. | Defective PCDU | Replace the PCDU. |
A dark line in any color (not C, M, or Y) appears. The line is parallel to the paper feed direction. | Dust in the laser beam path | Clean the laser beam path. |
Defective image transfer belt unit | Replace the image transfer belt unit. | |
Defective fusing unit | Replace the fusing unit. |