2DA/2DB-1
2-1 Mechanical construction
2-1-1 Paper feed section ............................................................................................................................... 2-1-1
2-1-2 Optical section ...................................................................................................................................... 2-1-4
(1) Original scanning ............................................................................................................................ 2-1-5
(2) Image printing ................................................................................................................................. 2-1-6
2-1-3 Drum section ........................................................................................................................................ 2-1-8
2-1-4 Developing section ............................................................................................................................. 2-1-10
(1) Formation of magnetic brush ........................................................................................................ 2-1-11
(2) Single component developing system .......................................................................................... 2-1-12
2-1-5 Transfer and separation sections ....................................................................................................... 2-1-13
2-1-6 Fixing section ..................................................................................................................................... 2-1-15
(1) Fixing temperature system ........................................................................................................... 2-1-16
(2) Fixing temperature control based on ambient temperature .......................................................... 2-1-16
2-1-7 Exit and switchback sections ............................................................................................................. 2-1-17
2-1-8 Duplex section .................................................................................................................................... 2-1-18
(1) Paper conveying operation in duplex copying .............................................................................. 2-1-19
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ........................................................................................................................... 2-2-1
(1) PCBs .............................................................................................................................................. 2-2-1
(2) Switches and sensors ..................................................................................................................... 2-2-2
(3) Motors ............................................................................................................................................. 2-2-4
(4) Other electrical components ........................................................................................................... 2-2-5
2-3 Operation of the PCBs
2-3-1 Power source PCB ............................................................................................................................... 2-3-1
2-3-2 Main PCB ............................................................................................................................................. 2-3-4
2-3-3 Engine PCB .......................................................................................................................................... 2-3-8
2-3-4 Printer board PCB .............................................................................................................................. 2-3-14
2-3-5 Operation unit PCB ............................................................................................................................ 2-3-18
2-3-6 CCD PCB ........................................................................................................................................... 2-3-21
2-4 Appendixes
Timing chart No. 1 .......................................................................................................................................... 2-4-1
Timing chart No. 2 .......................................................................................................................................... 2-4-2
Timing chart No. 3 .......................................................................................................................................... 2-4-3
Timing chart No. 4 .......................................................................................................................................... 2-4-4
Chart of image adjustment procedures .......................................................................................................... 2-4-5
Maintenance parts list .................................................................................................................................... 2-4-8
Periodic maintenance procedures .................................................................................................................. 2-4-9
General wiring diagram ................................................................................................................................ 2-4-11
fineline6
