Table 13. Solving image-quality problems Problem Cause Solution Scanned images have black dots or streaks in top and bottom margins. There is ink, glue, white-out, or some other substance on the contact image sensor. See chapter 3, “Maintenance.” There is a problem in the contact image sensor. Replace the contact image sensor. Scanned text is not clear. The contrast, resolution, or brightness needs to be adjusted before scanning. Adjust the resolution, contrast and brightness setting(s) from the toolbox on the Document Manager. The original is on colored paper. If the original was on colored paper, including brown recycled paper, the text might not be clear.
Try adjusting the resolution, contrast, and brightness settings from the toolbox on the Document Manager. There is a problem in the contact image sensor. Replace the contact image sensor. EN Image formation troubleshooting 163