User Guide

Print quality troubleshooting tools
Repetitive defects measurements
Use a ruler to measure occurrences of repetitive image defects to help solve image quality problems.
Place the ruler next to the first occurrence of the defect on the page. Find the distance between identical
defects and use the figure below to identify the component that is causing the defect.
Distance between defects Product components that cause the defect
32 mm Duplex reverse roller or duplex re-pickup roller
38 mm Input accessory feed roller
42 mm Output roller, intermediate output roller
43 mm Fuser output roller
44 mm Primary charging roller, cassette separation roller, registration roller, output
accessory feed roller 1, re-pickup roller
47 mm Transfer roller
48 mm Feed roller
57 mm Developer roller, output accessory feed roller 2
75 mm Fuser film
79 mm
94 mm Pressure sensitive drum, pressure roller
98 mm Cassette pickup roller
NOTE: The primary charging roller, photosensitive drum and developing roller cannot be cleaned. If
these rollers are indicated, replace the toner cartridge.
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