Image Problems
Overview
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).
• Abnormal image at 24-mm intervals: Paper feed roller
• Abnormal image at 25.5-mm intervals: Image transfer belt unit
• Colored spots at 27-mm intervals: Print cartridge (Development roller)
• Abnormal image at 30-mm intervals: Charge roller
• Abnormal image at 38-mm intervals: Registration roller
• Abnormal image at 60-mm intervals: Transfer roller
• Colored spots at 76-mm intervals: Print cartridge (OPC drum)
• Abnormal image at 110-mm intervals: Fusing unit (Pressure roller)
• Abnormal image at 115.5-mm intervals: Fusing unit (Heat roller)
Checking a Sample Printout
Print out a mono-color pattern (all K, C, M, or Y), which will clarify if the cause is a problem with one of
the AIOs, the image transfer belt, image transfer roller, or the fusing unit. A sample page is provided with
the printer driver's CD. You can print the sample page from the printer driver's CD. Before printing, you
have to adjust the printer driver settings to make the problem become obvious. For details about adjusting
the settings, refer to "Printer Driver Setting for Printing a Sample" described below.
• Occurs with 1-3 colors: AIO unit(s) failure
• Occurs with all four colors: Image transfer belt, transfer roller or fusing unit failure
6. Troubleshooting
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