Canon iPF750 series Service Manual page 8

Contents
2.1.1 Printer Diagram........................................................................................................................................................2- 1
2.1.2 Printer Diagram........................................................................................................................................................2- 2
2.1.3 Print Signal Sequence .............................................................................................................................................2- 3
2.1.4 Print Driving .............................................................................................................................................................2- 4
2.2 Firmware .................................................................................................................................................... 2- 6
2.2.1 Operation Sequence at Power-on............................................................................................................................2- 6
2.2.2 Operation Sequence at Power-off............................................................................................................................2- 7
2.2.3 Print Control .............................................................................................................................................................2- 8
2.2.4 Print Position Adjustment Function ........................................................................................................................2- 14
2.2.5 Head Management ................................................................................................................................................2- 14
2.2.6 Printhead Overheating Protection Control .............................................................................................................2- 14
2.2.7 Pause between Pages ...........................................................................................................................................2- 14
2.2.8 White Raster Skip ..................................................................................................................................................2- 14
2.2.9 Sleep Mode............................................................................................................................................................2- 14
2.2.10 Hard Disk Drive ....................................................................................................................................................2- 14
2.3 Printer Mechanical System....................................................................................................................... 2- 16
2.3.1 Outline....................................................................................................................................................................2- 16
2.3.1.1 Outline.................................................................................................................................................................................... 2- 16
2.3.2 Ink Passage ...........................................................................................................................................................2- 17
2.3.2.1 Ink Passage ........................................................................................................................................................................... 2- 17
2.3.2.2 Ink Tank Unit.......................................................................................................................................................................... 2- 18
2.3.2.3 Carriage Unit.......................................................................................................................................................................... 2- 20
2.3.2.4 Printhead................................................................................................................................................................................ 2- 24
2.3.2.5 Purge Unit .............................................................................................................................................................................. 2- 25
2.3.2.6 Maintenance Cartridge........................................................................................................................................................... 2- 30
2.3.2.7 Air Flow .................................................................................................................................................................................. 2- 31
2.3.3 Paper Path .............................................................................................................................................................2- 33
2.3.3.1 Outline.................................................................................................................................................................................... 2- 33
2.3.3.2 Paper Path ............................................................................................................................................................................. 2- 34
2.3.3.3 Cutter Unit.............................................................................................................................................................................. 2- 36
2.4 Printer Electrical System .......................................................................................................................... 2- 37
2.4.1 Outline....................................................................................................................................................................2- 37
2.4.1.1 Overview ................................................................................................................................................................................ 2- 37
2.4.1.2 Overview ................................................................................................................................................................................ 2- 39
2.4.2 Main Controller.......................................................................................................................................................2- 41
2.4.2.1 Main controller PCB components .......................................................................................................................................... 2- 41
2.4.2.2 Main controller PCB components .......................................................................................................................................... 2- 42
2.4.2.3 HDD expansion PCB components......................................................................................................................................... 2- 43
2.4.3 Carriage Relay PCB...............................................................................................................................................2- 44
2.4.3.1 Carriage PCB components .................................................................................................................................................... 2- 44
2.4.4 Maintenance Cartridge Relay PCB ........................................................................................................................2- 44
2.4.4.1 Maintenance cartridge relay PCB components...................................................................................................................... 2- 44
2.4.5 Power Supply.........................................................................................................................................................2- 45
2.4.5.1 Power supply block diagram .................................................................................................................................................. 2- 45
2.5 Detection Functions with Sensors ............................................................................................................ 2- 46
2.5.1 Sensors for covers .................................................................................................................................................2- 46
2.5.2 Ink passage system ...............................................................................................................................................2- 47
2.5.3 Carriage system.....................................................................................................................................................2- 50
2.5.4 Paper path system .................................................................................................................................................2- 52
2.5.5 Others ....................................................................................................................................................................2- 54
Chapter 3 INSTALLATION
3.1 Transporting the Printer.............................................................................................................................. 3- 1
3.1.1 Transporting the Printer ...........................................................................................................................................3- 1
3.1.1.1 Transporting the Printer ........................................................................................................................................................... 3- 1
3.1.2 Reinstalling the Printer.............................................................................................................................................3- 3
3.1.2.1 Reinstalling the Printer............................................................................................................................................................. 3- 3