2KW/2KX
(5) Detaching and refitting the middle transfer drive unit ..................................................... 1-5-42
1-5-10 Optical section ..................................................................................................................... 1-5-44
(1) Detaching and refitting the laser scanner unit ................................................................ 1-5-44
(2) Detaching and refitting the scanner unit ......................................................................... 1-5-47
1-5-11 Document processor ........................................................................................................... 1-5-51
(1) Detaching and refitting the document processor ............................................................ 1-5-51
(2) Detaching and refitting the DP paper feed pulley unit .................................................... 1-5-55
(3) Detaching and refitting the DP separation pad............................................................... 1-5-59
(4) Detaching and refitting the DP drive PWB...................................................................... 1-5-60
1-5-12 Others .................................................................................................................................. 1-5-61
(1) Detaching and refitting the paper conveying unit ........................................................... 1-5-61
(2) Detaching and refitting the operation panel.................................................................... 1-5-63
(3) Direction of installing the principal fan motors ................................................................ 1-5-64
1-6 Requirements on PWB Replacement
1-6-1 Upgrading the firmware ......................................................................................................... 1-6-1
1-6-2 Remarks on engine 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............................................................................................... 2-1-3
(3) Paper conveying section .................................................................................................. 2-1-5
2-1-2 Drum section ......................................................................................................................... 2-1-7
2-1-3 Developing section ................................................................................................................2-1-9
2-1-4 Optical section .....................................................................................................................2-1-11
(1) Image scanner section ................................................................................................... 2-1-11
(2) Laser scanner section .................................................................................................... 2-1-14
2-1-5 Transfer/Separation section ................................................................................................ 2-1-16
(1) Intermediate transfer unit section ................................................................................... 2-1-16
(2) Secondary transfer roller section.................................................................................... 2-1-18
2-1-6 Fuser section ....................................................................................................................... 2-1-19
2-1-7 Eject/Feedshift section ........................................................................................................2-1-21
2-1-8 Duplex conveying section.................................................................................................... 2-1-23
2-1-9 Document processor ...........................................................................................................2-1-25
(1) Original feed section.......................................................................................................2-1-25
(2) Original conveying section.............................................................................................. 2-1-27
(3) Original switchback/eject sections.................................................................................. 2-1-29
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ............................................................................................................ 2-2-1
(1) PWBs................................................................................................................................2-2-1
(2) Switches and sensors....................................................................................................... 2-2-4
(3) Motors............................................................................................................................... 2-2-6
(4) Others...............................................................................................................................2-2-8
(5) Document processor ........................................................................................................ 2-2-9
2-3 Operation of the PWBs
2-3-1 Power source PWB ...............................................................................................................2-3-1
2-3-2 Engine PWB ..........................................................................................................................2-3-3
2-3-3 Main PWB............................................................................................................................2-3-13
2-3-4 Drum relay PWB ..................................................................................................................2-3-20
2-3-5 DP drive PWB......................................................................................................................2-3-23
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