Chapter 6 Principles of OperationChapter 6 Principles of Operation CONTENTSVersion 3 2008.05.303.8.1 Major functions........................................................................................................................ 6 - 363.8.2 Reference diagram ................................................................................................................. 6 - 373.8.3 Data Flow................................................................................................................................ 6 - 383.9 Duplex............................................................................................................................................. 6 - 403.9.1 Major functions........................................................................................................................ 6 - 403.9.2 Reference diagram ................................................................................................................. 6 - 413.10 550 Paper Feeder ......................................................................................................................... 6 - 423.10.1 Major functions (Paper Cassette) ......................................................................................... 6 - 423.10.2 Reference diagram ............................................................................................................... 6 - 423.10.3 Multiple paper feed prevention.............................................................................................. 6 - 433.10.4 Reference diagram ............................................................................................................... 6 - 433.10.5 Bottom Plate Moving............................................................................................................. 6 - 443.10.6 Major functions (Feeder)....................................................................................................... 6 - 463.10.7 Reference diagram ............................................................................................................... 6 - 474. MODES .....................................................................................................................6 - 484.1 Operation Modes ............................................................................................................................ 6 - 485. Control .......................................................................................................................6 - 495.1 Control of Paper Size...................................................................................................................... 6 - 495.2 Selective Control on Paper Cassette .............................................................................................. 6 - 495.3 PRINTHEAD Light Quantity Control ............................................................................................... 6 - 495.4 Process Control .............................................................................................................................. 6 - 505.4.1 Potential Control ..................................................................................................................... 6 - 505.4.2 Toner Density Control ............................................................................................................. 6 - 515.4.3 High Area Coverage Mode ..................................................................................................... 6 - 515.4.4 Admix Mode ............................................................................................................................ 6 - 515.4.5 ADC Sensor Adjustment ......................................................................................................... 6 - 515.5 Color Registration Control............................................................................................................... 6 - 525.6 Fuser Control .................................................................................................................................. 6 - 535.6.1 Fuser temperature control....................................................................................................... 6 - 535.6.2 Cooling down .......................................................................................................................... 6 - 535.6.3 Sensor Warm-up..................................................................................................................... 6 - 536. Drive Transmission Route .........................................................................................6 - 546.1 PHOTOCONDUCTOR (PC)/DEVELOPER (DEV) DRIVE.............................................................. 6 - 546.2 TONER DISPENSER (Y, M, C, K).................................................................................................. 6 - 606.3 FEED DRIVE ASSEMBLY .............................................................................................................. 6 - 626.4 DRIVE ASSY DUP.......................................................................................................................... 6 - 646.5 DRIVE ASSY OPT FDR.................................................................................................................. 6 - 66
