Konica Minolta bizhub 20 bizhub 20 User Guide - Page 149
Cleaning the corona wire
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Cleaning the corona wire C If you have print quality problems, clean the corona wire as follows: a Turn off the machine. Unplug the telephone line cord first, disconnect all cables, and then unplug the power cord from the electrical socket. b Open the front cover and slowly take out the drum unit and toner cartridge assembly. c Clean the corona wire inside the drum unit by gently sliding the blue tab from right to left and left to right several times. 1 Note Be sure to return the blue tab to the home position (a) (1). If you do not, printed pages may have a vertical stripe. d Put the drum unit and toner cartridge assembly back in the machine. IMPORTANT • We recommend that you place the drum unit and toner cartridge assembly on a clean, flat surface with a sheet of disposable paper or cloth underneath it in case you accidentally spill or scatter toner. • Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold water at once. • To prevent damage to the machine caused by static electricity, DO NOT touch the electrodes shown in the illustration. e Close the front cover. 140