Problem solvingWorkCentre 5019/5021User Guide11-6Image quality problemsIf the image quality of the printout is poor, use the table below to find our most likely cause, and takethe action required.If the image quality remains poor after taking the required action, contact our Customer SupportCenter.Symptom Possible cause RemedyCopies are dirty. Is the document glass orthe document coverdirty?Clean the document glass or the documentcover.Refer to Cleaning the document cover anddocument glass on page 10-9.Is the document atransparent type such asa transparency medium?When copying highly translucent documents,dirt on the document cover shows up in thecopy. Place a sheet of white paper over thedocument before copying.Is the document oncolored or rough paper, ora blueprint?Adjust the copy density or remove thebackground paper color before copying.Refer to Lighten/Darken on page 5-15.Is the document onglossy printing paper?Glossy printing paper easily sticks to thedocument glass, and shadows can resemble dirtin the copy. Place a transparency or transparentfilm under the document before copying.Black linesappear in copies.Is the document feeder'snarrow glass strip dirty?Clean the narrow glass strip.Refer to Cleaning the document presser andnarrow glass strip on page 10-10.Copies are toodark.Is the copy density set toa high value?Adjust the copy density.Refer to Lighten/Darken on page 5-15.Copies are toolight.Is the document light?Is the copy density set toa low value?The copy isslightly out ofposition.Is the paper loaded in thecorrect position such asthe paper's leading edgedrifted away from thecorners of the tray?Load paper correctly, and align the paper guidesto the paper.Refer to Loading paper in Trays 1 and 2(optional) on page 4-7.Refer to Loading paper in the Bypass tray onpage 4-9.
