Specifications

Troubleshooting Drum Check - 8
Drum Check
Interrupting a print cycle and inspecting the photosensitive drum
can help isolate the cause of print quality problems. If the image
on the surface of the drum exhibits the same problem as the
printed page, the fault is before the drum, probably somewhere in
the scanning system. If the image on the drum is okay, the fault is
after the drum, probably in the fuser assembly, transfer corona,
or high-voltage power supply.
Note: Refer to “Roller Diameters” in this chapter for further
quick-check troubleshooting tips.