Chapter 33-13.1 Construction3.1.1 Functional Construction 0008-0985iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / iR3530 /The machine may broadly be divided into the following functional blocks: general control system, original exposure system, reader control system, printer controlsystem, laser exposure system, image formation system, pickup/feed system, fixing/delivery system. For detailed discussions of the individual blocks, see the chap-ters that follow.F-3-1T-3-13.1.2 Major PCB Wiring diagram 0008-0984iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / iR3530 /The following is a wiring diagram showing the relationship among major PCBs:[A] General Control System [1] HDDmain controller PCB [2] accessories PCB[B] Original Exposure System [3] photosensitive drum[C] reader Control System [4] chargingreader controller PCB [5] developing[D] Printer Control System [6] transferDC controller PCB [7] fixing[E] Laser Exposure System [8] delivery/reversal/duplex assembly[F] Image Formation System [9] pickup control[G] Fixing/Delivery System [10] cassette 1[H] Pickup/Feed System [11] cassette 2[A]MN-CON[D]DC-CON[H][G][10][11][9][6][7][3][E][F][8][C] R-CON[B][2][1][4][5]
