Basic operation The product routes all high-level processes through the formatter, which stores font information, processes the print image, and communicates with the host computer. The basic product operation comprises the following systems:
● The engine-control system, which includes the power supply and the DC controller printed circuit assembly (PCA) ● The laser/scanner system, which forms the latent image on the photosensitive drum ● The image-formation system, which transfers a toner image onto the paper ● The media feed system, which uses a system of rollers and belts to transport the paper through the product ● Option (optional paper feeder) Figure 1-1 Relationship between the main product systems The interconnect board (ICB) provides connections from the formatter to the following components:
● DC controller (DCC) ● Scan control board (SCB) ● Control panel, USB walk-up port, USB hardware integration pocket through a USB cable The formatter receives +12 volts from the low-voltage power supply (LVPS). The automatic document feeder/scanner receives 24 volts from the scanner power supply, which is powered by an AC line from the LVPS. The intermediate paper transport unit (IPTU) receives +24 volts and 3.3 volts from the DCC. 2 Chapter 1 Theory of operation ENWW Engine control system Laser/scanner system Image-formation system Media-feed system Option Laser/scanner system Option