Ricoh SP C252SF Operating Instructions - Page 320
Select [CMY + K] for [Gray Reproduction] in the printer
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10. Troubleshooting Problem Solution White spots appear. The surrounding registration roller or paper tray can become dirty with paper dust if you use paper other than standard paper. Wipe any paper dust off both the paper tray and registration roller. See page 291 "Cleaning the Registration Roller and Paper Tray". Colorless dots appear on solid color printouts. Change the paper type currently selected in the Paper Type settings, and then print. Eg. [Recycled Paper] to [Thin Paper] to [Plain Paper]. See page 78 "Specifying Paper Type and Paper Size Using Control Panel". White streaks or color streaks appear. Toner is almost empty. If an error message appears on the control panel, replace the print cartridge of the color indicated. See page 273 "Replacing the Print Cartridge". The backs of printed sheets are blemished. • When removing a jammed sheet, the inside of the printer may have become dirty. Print several sheets until they come out clean. • If document size is larger than paper size, e.g. A4 document on B5 paper, the back of the next printed sheet may become dirty. Black gradation is not natural. Only when using PostScript 3 Select [CMY + K] for [Gray Reproduction] in the printer driver's dialog box. See the printer driver Help. Solid lines are printed as broken lines. Only when using PostScript 3 Change the [Dithering] setting in the printer driver's dialog box. See the printer driver Help. 318