View Full Version : Konica C450

03-15-2008, 08:40 PM
Eror code 2557, even I'd change a new K/ IU,I'd carry out thr gradation ,& image stabilization, it allow to print for about 200 pages, then 2557 error shows, Need help, please advise. Thanks

03-16-2008, 08:22 PM
Imaging Unit IU410 K?? and Toner TN310 K ??

03-21-2008, 07:56 PM
I had a similar problem once were the toner supply one way bearing was slipping and not supplying toner to the black unit. look at the TC level in level history, if it is lower than the other units execute ATDC toner supply for the black. One run should bring it up. If it does not you need to check out the one way bearing between the black and cyan units toner drive. toner motor rotates one way to tone black and the other to tone cyan. the same with yellow and magenta. Its not as hard as it looks, about 8 screws and the front cover comes off to reveal the mechanism.

03-23-2008, 08:20 PM
Thankyou , Itis indeed a very helpful technically, ,I'll checkout & workon it.