Table 1-7 DC controller controlled components (continued) Component Designator Description Solenoid SL1 Pickup solenoid SL2 Duplex reverse solenoid NOTE: Duplex models only. Photointerrupter PS701 Fuser delivery sensor PS702 Media-width sensor PS751 Top-of-Page (TOP) sensor PS901 Main-motor rotation-number sensor Switch SW501 Cartridge-door switch SW502 Power switch Fan FM1 Main Fan 14 Chapter 1 Theory of operation ENWW