Table 5-3. Solving image quality problems Problem Cause Solution Scanned text is not clear. The contrast, resolution, or brightness needs to be adjusted before scanning. Adjust the resolution, contrast and/or brightness setting(s) from the tool box on the Document Assistant. The original is on colored paper. If the original was on colored paper, including brown recycled paper, the text may not be clear. Try adjusting the resolution, contrast, and/or brightness settings from the tool box on the Document Assistant. There is a problem in the contact image sensor. Replace the contact image sensor. C4224-90962 Image formation troubleshooting 133