Kyocera 255b, Service Manual

Page: 13 / 291

2K3/2L3-1
1-5-12 Others.................................................................................................................................. 1-5-37
(1) Detaching and refitting the language sheet .................................................................... 1-5-37
(2) Detaching and refitting the conveying unit...................................................................... 1-5-38
(3) Detaching and refitting the eject fan motor..................................................................... 1-5-40
(4) Direction of installing the principal fan motors ................................................................ 1-5-40
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) Conveying section ............................................................................................................ 2-1-4
2-1-2 Drum section ......................................................................................................................... 2-1-5
2-1-3 Developing section ................................................................................................................ 2-1-7
2-1-4 Optical section ....................................................................................................................... 2-1-9
(1) Image scanner section ..................................................................................................... 2-1-9
(2) Laser scanner section .................................................................................................... 2-1-11
2-1-5 Transfer/Separation section ................................................................................................ 2-1-12
2-1-6 Fuser section ....................................................................................................................... 2-1-13
2-1-7 Eject/Feedshift section ........................................................................................................ 2-1-15
2-1-8 Duplex conveying section.................................................................................................... 2-1-17
2-1-9 Document processor ........................................................................................................... 2-1-19
(1) Original feed section.......................................................................................................2-1-19
(2) Original conveying section.............................................................................................. 2-1-21
(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....................................................................................................... 2-2-4
(3) Motors............................................................................................................................... 2-2-6
(4) Others............................................................................................................................... 2-2-7
(5) Document processor (PWBs and sensors) ...................................................................... 2-2-8
(6) Document processor (Motors and clutches)..................................................................... 2-2-9
2-3 Operation of the PWBs
2-3-1 Main PWB.............................................................................................................................. 2-3-1
2-3-2 Engine PWB .......................................................................................................................... 2-3-7
2-3-3 Power source PWB ............................................................................................................. 2-3-15
2-3-4 Operation panel PWB main ................................................................................................. 2-3-19
2-3-5 DP main PWB
(Model with document processor as standard).................................................................... 2-3-24