Laser/scanner system The laser/scanner system receives VIDEO signals from the ECU and formatter and converts the signals into latent images on the photosensitive drum. The main components of the laser/scanner are the laser unit and the scanner motor unit. The DC controller sends signals to the laser/scanner to control the functions of these components. Figure 1-12 Laser/scanner system ENWW Engine-control system 19 Photosensitive drum BD sensor Laser unit Scanning mirror Scanner motor unit signal CONTROL signal OR CONTROL MOT signal signal SCANNER VIDEO LASER BDI DC controller Engine controller Formatter DC controller Engine controller DC controller Formatter