Chapter 44-14.1 Construction4.1.1 Construction and Mechanisms 0006-6582iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 /The machine's main controller block consists of the following and has the following functions:T-4-1F-4-14.1.2 Construction and Functions 0008-8054iR2230 / / iR3530 /The machine's main controller block consists of the following components arranged as shown:T-4-2Item DescriptionMain controller PCB Controls system operation, memory, printer unit output,image processing, printer unit image input processing,rendering, color LCDcontroller, card printer unit interface, fax imageprocessing, etc.SRAM Retains service mode settings (by SRAM), HDDmanagement informationImage memory (SDRAM) Temporarily retains image data (256 MB; 512 MBmax.)BOOTROM Stores boot programHDD Stores system software, retains image data forBox/Fax function (20 GB)USB port USB2.0 interfaceEthernet port (10/100Bsae-T) Ethernet interfaceItem DescriptionMain controller PCB controls system; controls memory; controls printer outputimageprocessing control, reader image input processing, renderingprocessing; controls color LCD controller, card readerinterface; controls fax image processingSRAM retains service mode settings and HDD managementinformation (SRAM)Image memory (SDRAM) temporarily retains image data256 MBBOOTROM stores boot programHDD (optional) stores system softwarestores image data for Box/Fax functions20 GBUSB port USB2.0 interfaceMain controller PCBUSB portRiser boardBoot ROMSRAMEthernet10/100BASE-THard disk driveDC controller PCBReader unitImage memory (SDRAM)
