B. Outline of the Electrical CircuitryThe copier’s principal electrical mechanisms are controlled by the microprocessor onthe DC controller PCB. The microprocessor reads the input signals from the sensors andoperation keys according to the stored program and generates signals used to drive suchloads as motors, solenoids, and lamps.The microprocessor is capable of reading both digital and analog signals because ofits built-in A/D converter.Figure 2-102COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 2 BASIC OPERATION2-2SensorAE sensor PCBMain thermistorSub thermistorControl panelPower switchControl card (accessory)SensorDC controller PCBCassette Driver PCB(accessory)Composite power supplyHigh-voltagecircuitADF (accessory)Sorter (accessory)Scanning lampheater switchOptionspowersupplyToner leveldetection PCBBias PCB DevelopingcylinderTransfer currentStatic eliminatorPrimary crrentMain motorPre-exposure lampMotorScanning motorLens motorFixing film moorFan Heat exhaust fanChange solenoidMultifeeder holding platesolenoidBlank shutter solenoidPrimary charging rollerCreaning solenoidTransfer charging rollerreversting solenoidRegistration clutchDelivery clutchMultifeeder pick-up clutchMotor Cassette unit motorCassette pick-up clutchCLCLSLLAM1HVCPUQ301CPUQ305ROMQ307RAMQ314(for IPCcommuni-cation)+5V+24V+34V(accessory)
