[. . . ] Samsung Electronics is not responsible for any direct or indirect damages, arising from or related to use of this manual. · ML-4550, ML-4551N, and ML-4551ND are trademarks of Samsung Electronics Co. , Ltd. · Samsung and Samsung logo are trademarks of Samsung Electronics Co. , Ltd. · Centronics is a trademark of Centronics Data Computer Corporation. [. . . ] See page 10. 1. Condition The printer prints, but the text is wrong, garbled, or incomplete. Possible cause The printer cable is loose or defective. Suggested solutions Disconnect and reconnect the printer cable. If possible, attach the cable and printer to another computer and try a print job that you know works. Check the application's printer selection menu to ensure that your printer is selected. If printing from Windows (any version), exit to a DOS prompt and verify functionality with the following command: At a C:\ prompt, type Dir LPT1, and press Enter. (This assumes you are connected to LPT1. ) Exit Windows and reboot the computer. Turn the printer off and then back on again. The computer may have insufficient random-access memory (RAM). The page layout is too complex. The wrong printer driver was selected. The software application is malfunctioning. Simplify the page layout and remove any unnecessary graphics from the document. See page 10. 1. The operating system is malfunctioning. The page orientation setting may be incorrect. The paper size and the paper size settings do not match. Change the page orientation in your application. Ensure that the paper size in the printer driver settings matches the paper in the tray. Or, ensure that the paper size in the printer driver settings matches the paper selection in the software application settings you use. If printing on special media, use the multi-purpose tray and open the rear cover. If printing on special media, use the multi-purpose tray and open the rear cover. Special print media, such as thick paper, should not be printed using the output tray (face-down). The illustrations print incorrectly in Adobe Illustrator. Pages print, but are blank. The toner cartridge is defective or out of toner. The setting in the software application is wrong. Redistribute the toner cartridge. Contact a service representative. The paper keeps jamming. There is too much paper in the tray. An incorrect type of paper is being used. Select Download as Bitmap in the Advanced Options window of the graphic properties. Print the document again. An incorrect output method is being used. There may be debris inside the printer. 9. 10 <Troubleshooting> Solving print quality problems Dirt inside of the printer or improper paper loading may reduce print quality. Condition Light or faded print Suggested solutions If a vertical white streak or faded area appears on the page: · The toner supply is low. If this does not improve print quality, install a new toner cartridge. · The paper may not meet paper specifications (for example, the paper is too moist or too rough). [. . . ] For details, see "Printing Multiple Pages on One Sheet of Paper" on the next column. Printing a Document When you print with a Macintosh, you need to check the printer software setting in each application you use. Follow these steps to print from a Macintosh. 1 2 3 Open a Macintosh application and select the file you want to print. Open the File menu and click Page Setup (Document Setup in some applications). Choose your paper size, orientation, scaling, and other options and click OK. Make sure that your printer is selected. Mac OS 10. 3 Mac OS 10. 3 4 5 6 Open the File menu and click Print. [. . . ]