B. Outline of the Electrical CircuitryThe machine’s major electrical mechanisms are controlled by the microprocessor onthe DC controller PCB:• Controlling copying sequence• Controlling high-voltage• Controlling scanner drive• Controlling pick-up/feeding• Controlling the lens motor (X, Y)• Controlling the blanking exposure LED• Controlling the analog signal inputsThermistor signalPotential sensor signalAmbient temperature signalManual feed size signalThe machine’s control panel is equipped with a dedicated CPU (Q937) whichcontrols the keys, LEDs, and LCD on the control panel.The machine communicates with the RDF and the sorter using the communicationsIC on its DC controller PCB and the communications IC (IPC) on the controller PCB ofeach accessory. (IPC communication 2).Figure 2-102 is a block diagram which shows the relationship between the machine’smajor circuits.COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV.0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 2 BASIC OPERATION2-2
