Code 641 had error code sc 670, shut down unplug for 3 minutes, reboot then recived code sc 641

SOURCE: showin cover open but doesnt indicate plus sc code 670

Check the fuse FU1 y FU2 in the power supply board FU1 display open door Without saying as. The flat cable of the laser also can cause the fault of open door,
cut or badly connected this also it can be indicate door opened without indicating as.
El cable plano del laser cortado o mal conectado, tambien puede provocar la falla de puerta abierta sin indicar cual de ellas está abierta.

SOURCE: Aficio 450 Copier: what is the meaning of sc 670 on 1035 machine...

DEFECTIVE BICU PWB OR DEFECTIVE CONTROLLER PWB THIS IS GOING TO BE EXPENSIVE 1000.00 OR MORE