2MH/2MJ/2MK/2ML
1-5-10 Others..................................................................................................................................1-5-49
(1) Detaching and refitting the main motor...........................................................................1-5-49
(2) Direction of installing the left cooling fan motor,
right cooling fan motor and power source fan motor ......................................................1-5-50
1-5-11 Document processor ...........................................................................................................1-5-51
(1) Detaching and refitting the DP rear cover and DP front cover .......................................1-5-51
(2) Detaching and refitting the DP drive PWB......................................................................1-5-52
(3) Detaching and refitting the feed pulley and forwarding pulley........................................1-5-53
(4) Detaching and refitting the separation pad assembly.....................................................1-5-56
1-6 Requirements on PWB Replacement
1-6-1 Upgrading the firmware .........................................................................................................1-6-1
1-6-2 Remarks on control PWB replacement..................................................................................1-6-2
2-1 Mechanical Construction
2-1-1 Paper feed/conveying section ...............................................................................................2-1-1
(1) Cassette paper feed section.............................................................................................2-1-1
(2) MP tray paper feed section...............................................................................................2-1-2
(3) Paper conveying section ..................................................................................................2-1-3
2-1-2 Drum section .........................................................................................................................2-1-4
(1) Drum section ....................................................................................................................2-1-4
(2) Main charger unit..............................................................................................................2-1-5
2-1-3 Optical section .......................................................................................................................2-1-6
(1) Scanner unit .....................................................................................................................2-1-6
(2) Image scanner unit (ISU)..................................................................................................2-1-7
(3) Laser scanner unit............................................................................................................2-1-9
2-1-4 Developing section ..............................................................................................................2-1-11
2-1-5 Transfer/separation section .................................................................................................2-1-13
2-1-6 Cleaning section ..................................................................................................................2-1-14
2-1-7 Fuser section .......................................................................................................................2-1-16
2-1-8 Paper exit section ................................................................................................................2-1-18
2-1-9 Duplex/conveying section....................................................................................................2-1-20
2-1-10 Document processor ...........................................................................................................2-1-21
(1) Original feed section.......................................................................................................2-1-21
(2) Original conveying section..............................................................................................2-1-22
(3) Original switchback/eject sections..................................................................................2-1-23
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ............................................................................................................2-2-1
(1) PWBs................................................................................................................................2-2-1
(2) Switches and sensors.......................................................................................................2-2-3
(3) Other electrical components.............................................................................................2-2-4
(4) Document processor ........................................................................................................2-2-5
2-3 Operation of the PWBs
2-3-1 Power source PWB ...............................................................................................................2-3-1
2-3-2 Control PWB..........................................................................................................................2-3-4
2-3-3 Scanner PWB ......................................................................................................................2-3-11
2-3-4 DP drive PWB......................................................................................................................2-3-14