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4.7.15
Transfer roller ................................................................................................. 4-62
4.7.16
Separation needle............................................................................................ 4-62
4.7.17
Transfer unit..................................................................................................... 4-63
4.7.18
Temperature/humidity sensor (S25) ................................................................ 4-63
4.8
DEVELOPMENT SYSTEM ............................................................................................. 4-64
4.8.1
Process unit ..................................................................................................... 4-64
4.8.2
Developer unit.................................................................................................. 4-65
4.8.3
Removing developer material ......................................................................... 4-65
4.8.4
Filling developer unit with developer material.................................................. 4-66
4.8.5
EPU memory board (EPU) .............................................................................. 4-67
4.8.6
Auto-toner sensor (S8) .................................................................................... 4-67
4.8.7
Drum thermistor (THMS4) ............................................................................... 4-68
4.8.8
Guide roller / Developer sleeve ....................................................................... 4-68
4.8.9
Mixer ................................................................................................................ 4-72
4.8.10
Replacement of oil seal ................................................................................... 4-74
4.9
FUSER UNIT................................................................................................................... 4-75
4.9.1
Fuser unit......................................................................................................... 4-75
4.9.2
Fuser roller unit / Pressure roller unit............................................................... 4-76
4.9.3
Separation finger ............................................................................................. 4-77
4.9.4
Fuser roller....................................................................................................... 4-78
4.9.5
Heater lamp ..................................................................................................... 4-79
4.9.6
Center / Side / Edge thermistor (THMS1/THMS2/THMS3) ............................. 4-80
4.9.7
Fuser center / Fuser front thermostat (THMO1/THMO2)................................. 4-81
4.9.8
Pressure roller ................................................................................................. 4-84
4.9.9
Exit sensor (S9) ............................................................................................... 4-86
4.9.10
Installation of the fuser unit fuse (service part) ................................................ 4-87
4.10 PAPER EXIT SECTION/REVERSE SECTION............................................................... 4-88
4.10.1
Reverse unit..................................................................................................... 4-88
4.10.2
Paper exit unit.................................................................................................. 4-89
4.10.3
Exit motor (M10) .............................................................................................. 4-90
4.10.4
Offset gate home position sensor (S24) .......................................................... 4-91
4.10.5
Exit roller.......................................................................................................... 4-91
4.10.6
Reverse motor (M14) ....................................................................................... 4-92
4.10.7
Reverse gate solenoid (SOL1) ........................................................................ 4-93
4.10.8
Reverse sensor (S23)...................................................................................... 4-94
4.10.9
Offset gate motor (M13)................................................................................... 4-95
4.10.10 Reverse roller .................................................................................................. 4-95
4.10.11 Upper transport roller....................................................................................... 4-96
4.11 AUTOMATIC DUPLEXING UNIT (ADU)......................................................................... 4-97
4.11.1
Automatic Duplexing Unit (ADU) ..................................................................... 4-97
4.11.2
ADU entrance sensor (S11)............................................................................. 4-98
4.11.3
ADU exit sensor (S10) ..................................................................................... 4-99
4.11.4
ADU motor (M5)............................................................................................. 4-100
4.11.5
ADU opening / closing switch (SW5) ............................................................. 4-101
4.11.6
ADU clutch (CLT1)......................................................................................... 4-102
4.11.7
ADU lower transport roller ............................................................................. 4-104
4.11.8
ADU upper transport roller............................................................................. 4-104
4.12 Installation and Replacement of Options ...................................................................... 4-106
4.12.1
MR-3022 (Reversing Automatic Document Feeder (RADF)) ........................ 4-106
4.12.2
KD-1025 (Paper Feed Pedestal (PFP)) ......................................................... 4-108
4.12.3
KD-1026 (Large Capacity Feeder (LCF)) ...................................................... 4-110
4.12.4
MJ-1032 (Finisher)......................................................................................... 4-112
4.12.5
MJ-1033 (Finisher)......................................................................................... 4-115
4.12.6
MJ-1101 (Finisher)......................................................................................... 4-117
4.12.7
MJ-1106 (Finisher)......................................................................................... 4-118
4.12.8
KN-2520 (Bridge unit) .................................................................................... 4-121
4.12.9
MJ-5006 (Job separator) ............................................................................... 4-123
4.13 Damp Heater Kit (MF-4550U/E) Installation Procedure ................................................ 4-125
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