DC controller subsystem The DC controller is responsible for coordinating the entire printing process. The DC controller enables the drive circuitry for the laser beam and coordinates print data from the formatter with paper size, laser beam motion, the high voltage system, fuser temperature, and motors. The DC controller also shares machine status information with the formatter so that proper diagnostic messages appear on the control panel. An overview is shown in Figure 5-36. Figure 5-36 DC controller PCB 132 Theory of operation C7085-90921