I removed all toners and imaging drum. installed each toner, no noise. installed imaging drum last. when printing test page, noise was observed, sound coming front front left of printer (I walked around the printer and it was not difficult to notice where noise was coming from. inspected printer after removing imaging drum, normal. inspected imaging card, seems to be normal. prints are normal. never a paper jam problem
Error 7410 - Drum unit non- installing error
The drum unit is not installed or not installed properly.
Install the drum unit (See page P.1-5-10 of your operation guide). See image below.
The numbers after 7410- are the number of pages printed on this printer.
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after replacing toners and drum printer is printing very very light.
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