Chapter 22-39F-2-492.8.2.2 Operation of each block 0013-8420/ i-SENSYS LBP5360 / i-SENSYS LBP5300a. CPU(IC1001)The CPU, which is composed of 16-bit single-chip microcomputer with built-in ROM and RAM, is utilized in the printer. It controls the following printeroperations which are totally programmed in the built-in ROM of CPU.1) Printer engine sequence2) ASIC3) Fixing unit4) Solenoids5) Sensors and switches6) Fixing control circuit (Relay drive)b. ASIC (IC1010)The ASIC (Application Specific IC) is used to interface to the IC, memory, external device, and etc. It controls the following printer operations in response tothe commands from the CPU.1) Communication with video controllerDC controller PCBCassette paper sensorMulti-purpose tray papersensorPaper feeder paper sensorTop of page sensor+3.3V+5V+24VAC inputIC1007EEPROMIC1002Reset ICMemory controllerDrum motorsOne-sided paper sensorPaper loop sensorCassette presence sensorVideo controller PCBMM Duplexing feed motorColor misregistration/image density sensorDeveloping estrangementsolenoidMulti-purpose traypick-up solenoidCassette pick-up solenoidTransfer rollerestrangement solenoidFixing paper sensorDelivery tray paper fullsensorM ETB motorPaper feeder ( Option)Duplesing reverse motorMMFixing motorFeed motorEnvironment sensorPaper feeder media sensorFixing pressure releasesensorDrum home positionsensorToner level sensorPaper feeder pick-upsolenoidLeser/Scanner unitsScanner motorsBD PCBsLaser/driversCartridge setting failuresensorSLFixing controlcircuitMLow-voltagepower supplycircuitSLSLSLSLIC801DUPLEXCPUSLFANIC802Duplexing reverse paper sensorDuplexing flapper solenoidDuplesx cooling fanDevelopong estrangementsensorDuplexing driver PCBDriver ICIC803Multi-purpose tray mediaposition sensorLow-voltage power supply unitPrimary charging rollersDeveloping cylindersPhotosensitve drumsMemory tagsAttraction rollerHigh-voltage powersupply circuitTransfer rollersETB unitEP cartridgesIC1010ASICIC1001CPUFixing unitExhaust fanIC401