Dell 2130cn Service Manual page 766

Chapter 6 Principles of Operation CONTENTS
3.9.1 Major functions........................................................................................................................ 6 - 38
3.9.2 Reference diagram ................................................................................................................. 6 - 40
3.9.3 Data Flow................................................................................................................................ 6 - 41
3.10 Duplex........................................................................................................................................... 6 - 43
3.10.1 Major functions...................................................................................................................... 6 - 43
3.10.2 Reference diagram ............................................................................................................... 6 - 43
3.10.3 Removing DUPLEX .............................................................................................................. 6 - 44
3.11 250 Paper Cassette ...................................................................................................................... 6 - 46
3.11.1 Major functionsÅiPaper CassetteÅj ...................................................................................... 6 - 46
3.11.2 Reference diagram ............................................................................................................... 6 - 46
3.11.3 Multiple Sheet Feed Prevention............................................................................................ 6 - 47
3.11.4 Reference diagram ............................................................................................................... 6 - 47
3.11.5 Major functions (Paper Feeder) ............................................................................................ 6 - 48
3.11.6 Reference diagram ............................................................................................................... 6 - 49
4. MODES .....................................................................................................................6 - 50
4.1 Operation Modes ............................................................................................................................ 6 - 50
5. Control .......................................................................................................................6 - 51
5.1 Control of Paper Size...................................................................................................................... 6 - 51
5.2 ROS Light Quantity Control ............................................................................................................ 6 - 51
5.3 Process Control .............................................................................................................................. 6 - 52
5.3.1 Potential Control ..................................................................................................................... 6 - 52
5.3.2 Toner Density Control ............................................................................................................. 6 - 53
5.3.3 High Area Coverage Mode ..................................................................................................... 6 - 53
5.3.4 Admix Mode ............................................................................................................................ 6 - 53
5.3.5 ADC Sensor Adjustment ......................................................................................................... 6 - 53
5.4 Color Registration Control............................................................................................................... 6 - 54
5.5 Fuser Control .................................................................................................................................. 6 - 55
5.5.1 Fuser temperature control....................................................................................................... 6 - 55
5.5.2 Cooling down .......................................................................................................................... 6 - 55
5.5.3 Sensor Warm-up..................................................................................................................... 6 - 55
6. Drive Transmission Route .........................................................................................6 - 56
6.1 DRIVE ASSY MAIN ........................................................................................................................ 6 - 56
6.2 DRIVE ASSY MAIN and DRIVE ASSY SUB DRIVE ...................................................................... 6 - 60
6.3 TONER DISPENSER (Y, M, C, K).................................................................................................. 6 - 66
6.4 DRIVE ASSY SUB .......................................................................................................................... 6 - 68
6.5 DRIVE ASSY DUP.......................................................................................................................... 6 - 72
6.6 DRIVE ASSY OPTION FDR ........................................................................................................... 6 - 74
Chapter 6 Principles of Operation