Oki C942 C911dn/C931dn/C931DP/C941dn/C941DP/C942 Troubleshooting Guide - Engli - Page 6

Contents Manual Configuration 2 Reading the Manual 3 Symbols...3 Keys, Buttons, and Symbols 3 Illustrations...4 Screens...4 Inscriptions...5 1 Troubleshooting 9 Troubleshooting solutions procedure 10 Paper jams 11 Checking messages (if a paper jam occurs 11 Removing jammed paper 14 If paper messages are displayed 36 If replace consumables messages are displayed 38 If other messages are displayed 40 Printing Troubles 46 Unable to print...46 Printer driver malfunctions 50 Print quality is poor 52 Paper feed is poor 57 When image disturbance occurs 58 Adjusting the print result 58 2 Maintenance 59 Replacing consumables and maintenance unit 60 Consumables and maintenance unit service life 60 When the replacement period is approaching 62 Replacing toner cartridges 63 Replacing Image Drums 66 Replacing belt units and transfer roller units 69 Replacing fuser units 75 Replacing waste toner boxes 77 Replacing paper feed rollers 79 Device Maintenance 87 Cleaning device surfaces 87 Cleaning LED heads 87 Cleaning feed rollers 93 - 6 -