Product spec and featureService Manual 2-29 Samsung ElectronicsSystem MemoryUsed as a Printing buffer for printing, a Scan buffer for scanning, a ECM Buffer for SystemWorking Area.▪ Type DDR2 SDRAM▪ Bus 16-bit 166MHz▪ Size 128 MBCRU ControlUsed to store the printing and operating information into a Security EEPROM in 4 CRUs, Y,M,Cand K Imaging Cartridge, respectively by the CHORUS3.▪ Access I2C Bus Ch.100 KHz▪ Security Size 2K-bitSystem Information ControlUsed to store the system operating information needed at printing into a EEPROM in the Main Controller bythe CHORUS3.▪ Access I2C Bus Ch.1 400KHz▪ EEPROM Size 64KbitOPE InterfaceUsed to control the OPE by the CHORUS 3 and the UART interface is used to communicate between theboth.I/O PortUsed to receive or transmit some data from/to the Host.▪ USB Device USB2.0 High speed 480Mbps▪ Network Ethernet 10/100-Base TxEngine ControlUsed to control all parts to be required at printing by the CHORUS 3.▪ Sensors Paper EmptyPaper RegistrationWaste Toner BottlePaper ExitTemperature sensorsBin-FullEtc.▪ Clutches(Solenoid) Paper Pick UpPaper RegistrationEtc.▪ Motor 1 BLDC▪ LSU▪ Fuser Control the Fuser’s temperature▪ HVPS Control the high voltage outputs▪ ADC Reading the Fuser’s temperature and the high voltage outputs’ feedback▪ Cover Open Sensing
