Oki ML621 ML620, ML621 Users' Guide - English - Page 69
Maintenance
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Chapter 5: Maintenance Replacing the Ribbon Cartridge Important! Make sure you have the correct replacement ribbon for your printer. The wrong ribbon will not print when installed in your printer. Look for the printer model number on the ribbon package. Ribbon Cartridge Handling Leave unused ribbon cartridges in their packages until needed. Careful; the ribbon ink may cause permanent stains. Ribbon ink on skin or clothing can usually be removed with soap and water. 1. Make sure the printer is turned OFF. . Open the access cover, set the Paper Thickness lever to position 10 and center the printhead. CAUTION! The printhead may be HOT! . Holding the sides of the ribbon guide, slope it up and out to remove it from the carriage. Make sure the Ribbon Guide is aligned with the cutaway on the Pull Up Roller Assembly. ML620/ML621 User's Guide 69