Konica Minolta Minolta Di 650 Di 551 Di 5510 Di 7210 Copier Toner 604a "1450 code" Questions

...error code c-1450 on di551 a rat entered by back of machine. l tried to check the cables but seems to be good.tell me what can i do to rectify this problem. C1450 Sequence timeout. Good luck with ...

when I put on the power button, all the lights like, Alarm, Drum and Data are all lighted. They do not go off. I can't print. It was not like this before. Formally, when you put on the power button, ...