Hy all! I have a bizhub 500 and for the few months it doesn't display the message :"Replace toner cartridge". Every time when it about 30 000 copies, I need to check if it has toner in the bottle. The copy/print is lightning and sometimes is good. Then it start to give me the code 2403. I cleaned the sensor and then replaced. No succed. Then code 2804 - I look at toner unit supply. It's full and has to much toner. I thought the developer unit has a problem. I changed it and change the developer, drum and cleaning blade. Nothing change. The machine doesn't display the message, has 2403 code every time when try to get toner. And the copy/print is very light.
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