Horizontal Lines and Spots Appear Periodically

Cause

Solution

Reference

If lines or spots in a specific color occur in approximately 94 mm (3.7 in) intervals, the green tube of the image drum is damaged or dirty.

Lightly wipe the image drum with a soft tissue paper.

Replace the image drum if it is damaged.

Replacing the Image Drum

If lines or spots in various colors occur in approximately 94 mm (3.7 in) intervals, the fuser unit is damaged or dirty.

Replace the fuser unit.

Replacing the Fuser Unit

If the interval of lines or spots are approximately 50 mm (2 inches), some parts inside of the belt unit are broken.

Replace the belt unit.

Replacing the Belt Unit

If the intervals of lines or spots are approximately 40mm (1.6inches) or 58mm (2.3inches), the part in the image drum is damaged.

Replace the image drum.

Replacing the Image Drum

If the intervals of lines or spots are approximately 37 mm (1.5 inches), there may be foreign objects in the image drum.

Open and close the front cover, and then print again.

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If the intervals of lines or spots are approximately 31mm (1.2inches), the resist roller is dirty.

Open the front cover, and wipe the resist roller with a soft tissue paper.

Cleaning the Resist Roller

The image drum has been exposed to light.

Place the image drum back into the machine, and then do not use for a few hours. If the problem persists, replace the image drum.

Replacing the Image Drum

The paper feed path is dirty.

Print a few test pages.

Test Printing from the Printer