Oki MICROLINE 720 Handbook

Contents

56Ploblem Solving,The I-Prime signal is sent over the parallel interface (pin 31) and will automaticallyoverride any settings you have made using the front panel buttons. To eliminate thisproblem, enter the program MENU (hold SHIFT button while pressing SEL/MENUbutton) and change the I-Prime item (in the Parallel I/F group) to Invalid.…the Print Quality and Character Pitch buttons on the front panel won’t work?The Operator Panel Function item on the printer MENU can be used to disable thesebuttons. If the printer is part of a customized system or if it is used by a number ofpeople, the system manager may have used this option to make sure the printer isalways set properly.…static electricity causes the paper to stick?In cold, dry weather, static charges can build up on continuous-form paper. This canmake the paper cling to the paper separator. If you have this problem during high-volume printing jobs, try moving the single sheet paper guides on the separator to-gether so that the paper rests on the guides rather than on the separator itself.MaintenanceThis section explains how to change ribbons, clear paper jams and clean your printer.Replacing the Ribbon CartridgeWhen replacing the ribbon, be sure to use only ribbons specifically for use withMICROLINE 720/721 printers. For best results,use genuine OKI ribbons.1. Turn printer off.2. Disengage and swing open access cover.Caution! Be careful not to touch theprinthead: it may be hot!