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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
32 mm
38 mm
42 mm
43 mm
44 mm
47 mm
48 mm
57 mm
75 mm
94 mm
98 mm
NOTE:
The primary charging roller, photosensitive drum, and developing roller cannot be cleaned. If
these rollers are indicated, replace the toner cartridge.
ENWW
Product components that cause the defect
Duplex reverse roller or duplex re-pickup roller
Input accessory feed roller
Output roller, intermediate output roller
Fuser output roller
Primary charging roller, cassette separation roller, registration roller, output
accessory feed roller 1, re-pickup roller
Transfer roller
Feed roller
Developer roller, output accessory feed roller 2
Fuser film
Pressure sensitive drum, pressure roller
Cassette pickup roller
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Troubleshooting
