COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 1 BASIC OPERATION1-2 RCCD/APPCBADFScannermotorReader controller PCBController unitPrinter unitInverterPCBLA2M3IC5021(IPC comm-unication 2 )IC5016(ROM)IC5025(CPU)IC5008IC5009(RAM)IC5027(EEPROM)F01-202-01 Major PCBsT01-202-01 List of Control Items2. Outline of Electrical Circuitry2.1 OutlineThe major mechanisms of the reader unit are controlled by the CPU on the reader control-ler PCB.The functions of the major ICs are as indicated in the following table.2.2 Reader Controller PCBNameCPURAMEEP-ROMROMDescription• Controls the sequence of scanneroperations.• Controls the original size detectionmechanism.• Controls the CCD.• Controls the communications withthe ADF.• Stores service mode data.• Stores user mode data.• Stores control data.• Backs up RAM data.• Stores control programs.• Controls the scanning lamp.• Controls shading correction.• Controls service mode.• Controls the communications withthe main controller.Download Free Service Manual at http://printer1.blogspot.com
