Good evening colleagues, I have received a Samsung CLX3175 multifunction with the system error on the screen, I do not have the service manual or how to access the service mode, could you tell me what the problem may be ?, I notice that the fuser does not take temperature, But I don't know if it's because of the failure. From already thank you very much.

Hello, I have checked the thermal fuses and one was open, I already solved it, but now it prints me in black if the copy is monochrome or yellow if it is color, I already cleaned the loading roller and check the grounding of the drum, any idea ??