I was called out to the machine because it had an error code, SC322. I was able to reset the code but after I did the machine would warm up I watched the heater lamp come on. Yet the display read please wait auto start. It would never code out and would never allow me to make a copy. I replace the harddrive, the Laser Diode Unit, the Power source board, the BICU board, and the IOB board and the problem persists. I'm stumped and was wondering if anyone has ran across this problem and do they have a solution to fix it. Any help appreciated. Thank you.

Office Equipment & Supplies - Ricoh - Aficio 450 Copier