Panasonic KX-FLB802CX Service Manual

11KX-FLB802CX/KX-FLB812CX/KX-FLB802CXS/KX-FLB812CXS6.2. GENERAL BLOCK DIAGRAMThe following is an outline of each device IC on the digital board.SOC(IC600)Mainly Performing program working and the image processing.CPU:ARM9 DSP:Quatro DMA FunctionMain Function1) SDRAM Controller2) USB Controller with PHY.3) SCANNER I/F4) Printer I/F5) I/O Port6) System Bus I/F7) Serial I/FG/A (IC604)Controls the operation panel I/F.Controls the LSU I/F.Controls FANs, LEDs and Sensors and analog I/F.Control the motor (DC motor and Stepping Motor)Real Time Clock circuitControls the high Voltage Unit controlContains A/D converterFlash ROM (IC602)This 64 Mbit FLASH ROM contains all of the program instructions on the unit operations.Synchronous Dynamic RAM (IC601)This memory is used for Program working and Image processing.Modem (IC607)Performs the modulation and the demodulation for FAX communication.Detect the CALLED ID signal.Read SectionCIS Unit to read transmitted documents.CIS Unit connected to FLATBED transit Unit.Scan data is converted by Analog Front End on Digital Board.Motor DriverDrives the DC motor for Printing.Drives the Stepping Motor for Auto Document Feeder and CIS carriage.LSU (Laser Scanning Unit)Forms the images on the OPC drum by rotating polygon motor and reflecting the laser beam against polygon.Analog BoardComposed of ITS circuit and NCU circuit.Sensor SectionComposed of 13 sensors (switches). (contains optional parts)Power Supply Board SectionSupplies +3.3V, +6V, 12V and +24V to the digital unit and controls the Heat Lamp.High Voltage Power Supply BoardSupplies bias need for the printing operation: bias of the Drum, developing and transcription.Fixing UnitComposed heat lamp, thermistor and thermostats.