DC controller operations The DC controller controls the operational sequences of the product systems. Figure 1-10 DC controller block diagram Table 1-9 DC controller controlled components 14 Chapter 1 Theory of operation ENWW Engine controller Motor AC input Fan Low-voltage power supply Solenoid Fuser Photointerrupter DC controller Switch High-voltage Print cartridge power supply Optional paper-feeder Laser/scanner Formatter Control panel Formatter Control panel Component Designator Description Motor M8001 Main motor M8002 Fuser motor Fan FM1 Main fan FM2 Sub fan Solenoid SL1 Tray 1 (multipurpose tray) pickup solenoid SL2 Cassette (Tray 2) pickup solenoid