Troubleshooting User guide68Problems with the print qualityProblem Corrective actionPrint is faulty The inserted document is too thick. Use a document with the cor-rect thickness. Refer to the section Paper specifications, page 85and the chapter Print media, page 29.Print is too pale The ribbon exhausted or the ribbon cassette is not correctly fitted.Refer to the chapter Changing the ribbon cassette, page 33.Smudged print The ribbon is damaged (e.g. frayed). Change the ribbon asdescribed in the chapter Changing the ribbon cassette, page 33.Dots within characters aremissing1. Check whether the ribbon is damaged. To do so check the rib-bon cassettes functionality by turning the green tension gear indirection of the arrow on the cassette; check if the ribbon itselfis torn or has holes etc. If necessary replace the ribbon cas-sette; see the chapter Changing the ribbon cassette, page 33.2. Check whether the print head is damaged. To do so print out astatus page (see Printing out the status page, page 53) andcheck if under the lines representing the software versions all24 lines are present. Every line represents one of the 24 nee-dles of the print head. If not so, replace the print head; see thechapter Replacing the print head, page 39.We recommend to use genuine ribbon cassettes only.In case of a damaged print head, please contact yourdealer.Prints undefined characters 1. Check that the interface plug is correctly connected to the com-puter and to the printer.2. Check that the proper emulation and the correct character setis selected in the menu; see section Emulation type, page 61,Epson, page 62, IBM, page 62 and Olivetti, page 62.3. Check the length of the interface cable; see the chapterInterfaces, page 127.
