Canon imagePROGRAF iPF8400 Service Manual

Contents
Contents
2.1 Basic Operation Outline ................................................................................................................................................2-1
2.1.1 Printer Diagram............................................................................................................................................................................ 2-1
2.1.2 Print Signal Sequence................................................................................................................................................................... 2-2
2.1.3 Print Driving................................................................................................................................................................................. 2-3
2.2 Firmware........................................................................................................................................................................2-5
2.2.1 Operation Sequence at Power-on .................................................................................................................................................2-5
2.2.2 Operation Sequence at Power-off ................................................................................................................................................ 2-6
2.2.3 Print Position Adjustment Function............................................................................................................................................. 2-7
2.2.4 Head Management........................................................................................................................................................................2-7
2.2.5 Printhead Overheating Protection Control ................................................................................................................................... 2-7
2.2.6 Pause between Pages.................................................................................................................................................................... 2-7
2.2.7 White Raster Skip......................................................................................................................................................................... 2-7
2.2.8 Sleep Mode................................................................................................................................................................................... 2-7
2.2.9 Hard Disk Drive ........................................................................................................................................................................... 2-8
2.3 Printer Mechanical System............................................................................................................................................2-9
2.3.1 Outline.......................................................................................................................................................................................... 2-9
2.3.1.1 Outline.............................................................................................................................................................................................................2-9
2.3.2 Ink Passage................................................................................................................................................................................. 2-10
2.3.2.1 Ink Passage....................................................................................................................................................................................................2-10
2.3.2.1.1 Overview of Ink Passage.......................................................................................................................................................................2-10
2.3.2.2 Ink Tank Unit................................................................................................................................................................................................2-11
2.3.2.2.1 Structure of Ink Tank Unit....................................................................................................................................................................2-11
2.3.2.3 Carriage Unit.................................................................................................................................................................................................2-13
2.3.2.3.1 Functions of Carriage Unit....................................................................................................................................................................2-13
2.3.2.3.2 Structure of Carriage Unit.....................................................................................................................................................................2-14
2.3.2.4 Printhead .......................................................................................................................................................................................................2-16
2.3.2.4.1 Structure of Printhead ...........................................................................................................................................................................2-16
2.3.2.5 Purge Unit .....................................................................................................................................................................................................2-17
2.3.2.5.1 Functions of Purge Unit........................................................................................................................................................................2-17
2.3.2.5.2 Structure of Purge Unit .........................................................................................................................................................................2-20
2.3.2.6 Maintenance Cartridge..................................................................................................................................................................................2-22
2.3.2.6.1 Maintenance Cartridge..........................................................................................................................................................................2-22
2.3.2.7 Air Flow........................................................................................................................................................................................................2-23
2.3.2.7.1 Air Flow................................................................................................................................................................................................2-23
2.3.3 Paper Path...................................................................................................................................................................................2-24
2.3.3.1 Outline...........................................................................................................................................................................................................2-24
2.3.3.1.1 Overview of Paper Path ........................................................................................................................................................................2-24
2.3.3.2 Paper Path .....................................................................................................................................................................................................2-25
2.3.3.2.1 Structure of Feed Roller Unit................................................................................................................................................................2-25
2.3.3.3 Cutter Unit ....................................................................................................................................................................................................2-26
2.3.3.3.1 Structure of Cutter Unit.........................................................................................................................................................................2-26
2.4 Printer Electrical System .............................................................................................................................................2-27
2.4.1 Outline........................................................................................................................................................................................ 2-27
2.4.1.1 Overview.......................................................................................................................................................................................................2-27
2.4.2 Main Controller..........................................................................................................................................................................2-29
2.4.2.1 Main controller PCB components.................................................................................................................................................................2-29
2.4.3 Carriage Relay PCB ................................................................................................................................................................... 2-31
2.4.3.1 Carriage relay PCB components...................................................................................................................................................................2-31
2.4.4 Head Relay PCB.........................................................................................................................................................................2-31

Canon imagePROGRAF iPF8400 Specifications

General

Internal storage capacity	250 GB