CHAPTER 2 BASIC OPERATIONCOPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)2-2Figure 2-102SensorQ101CPUQ900CPUScanning lampFixing heaterContactPCBHigh-voltagecircuitblock+5V+24VMain motordriver PCBSolenoidToner leveldetection PCBSide blankinglampScanner/lens drive motorPre-exposurelampScanner cooling fanCounterPowerswitchMainmotorSensor/switch ADF loadControlpanelThermistorAE sensorPCB• Scanner home position detection• Lens home position detection• Pre-registration roller paperdetection• Delivery paper detection• Vertical path roller paper detection• Waste toner detection• Scanner thermistor• Fixing thermistor Compositepower supply PCBDC controller PCB• Primary charging roller• Developing cylinder• Transfer charging roller• Static eliminator• Pickup clutch solenoid• Registration clutch solenoid• Lens drive solenoid• Multifeeder pickup solenoid• Cassette pickup solenoid• Primary charging roller cleaning solenoidADFB. Outline of Electrical CircuitryThe machine's major electric mechanisms are controlled by the microprocessor mounted onthe DC controller PCB, which reads input signals from sensors and operating keys according to theinstructions of the program stored in advance and sends signals used to drive motors, solenoids,lamps, and other loads as needed.
