Brother International HL-1660E Service Manual - Page 18

1.2 Main Drive The power necessary for driving the printer is supplied by the main motor, the paper feed motor and the scanner motor. The main motor is controlled by the main motor drive signal (MDRIVE) output from the main PCB, and the paper feed motor is controlled by the paper feed motor drive signal output from the main PCB, and the scanner motor is controlled by the scanner motor drive signal (SDRIVE) output from the main PCB. Main motor Main motor drive signal (MDRIVE) Main PCB Drum gear Photosensitive drum Fixing unit Paper delivery rollers Paper feed motor Paper feed motor drive signal MP tray pick-up roller solenoid drive signal (MPSOL) MP tray pick-up roller solenoid MP tray pick-up roller Tray1 pick-up roller solenoid drive signal (PUCL1) Tray1 pick-up roller solenoid Tray1 pick-up roller Scanner motor drive signal (SDRIVE) Scanner motor Scanner unit Scanning mirror Note: There are cases, in the following pages, that a main motor is referred to as a DC motor, but they are identical. Figure 2.2 II - 2