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Canon W6400 Series Service Manual Page 43

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Contents
2.1 Basic Operation Outline.................................................................................................................................................2-1
2.1.1 Printer Block Diagram ................................................................................................................................................................. 2-1
2.1.2 Print Signal Sequence .................................................................................................................................................................. 2-1
2.1.3 Print Driving ................................................................................................................................................................................ 2-3
2.2 Firmware ........................................................................................................................................................................2-5
2.2.1 Power On/Off............................................................................................................................................................................... 2-5
2.2.2 Power Off..................................................................................................................................................................................... 2-5
2.2.3 Print Control................................................................................................................................................................................. 2-6
2.2.4 Print position adjustment ............................................................................................................................................................. 2-7
2.2.5 Head Management ....................................................................................................................................................................... 2-8
2.2.6 Overheating Protection Control of Printhead .............................................................................................................................. 2-8
2.2.7 Pause between Pages.................................................................................................................................................................... 2-8
2.2.8 White Raster Skip ........................................................................................................................................................................ 2-8
2.2.9 Sleep Mode .................................................................................................................................................................................. 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................................................................................................................................................................................... 2-9
2.3.2.1 Ink Passage......................................................................................................................................................................................................2-9
2.3.2.1.1 Overview of the ink passage ...................................................................................................................................................................2-9
2.3.2.2 Ink Tank Unit ................................................................................................................................................................................................2-10
2.3.2.2.1 Structure of ink tank unit.......................................................................................................................................................................2-10
2.3.2.3 Carriage Unit .................................................................................................................................................................................................2-11
2.3.2.3.1 Carriage functions .................................................................................................................................................................................2-11
2.3.2.3.2 Structure of carriage ..............................................................................................................................................................................2-12
2.3.2.4 Printhead .......................................................................................................................................................................................................2-13
2.3.2.4.1 Structure of printhead............................................................................................................................................................................2-13
2.3.2.5 Purge Unit .....................................................................................................................................................................................................2-14
2.3.2.5.1 Functions of purge unit .........................................................................................................................................................................2-14
2.3.2.5.2 Structure of purge unit...........................................................................................................................................................................2-16
2.3.2.6 Maintenance Cartridge ..................................................................................................................................................................................2-18
2.3.2.6.1 Maintenance cartridge ...........................................................................................................................................................................2-18
2.3.2.7 Air Flow ........................................................................................................................................................................................................2-19
2.3.2.7.1 Air flow .................................................................................................................................................................................................2-19
2.3.3 Paper Path .................................................................................................................................................................................. 2-19
2.3.3.1 Outline...........................................................................................................................................................................................................2-19
2.3.3.1.1 Overview of paper path .........................................................................................................................................................................2-19
2.3.3.2 Paper Path......................................................................................................................................................................................................2-23
2.3.3.2.1 Structure of feed rollers.........................................................................................................................................................................2-23
2.3.3.3 Cutter Unit.....................................................................................................................................................................................................2-24
2.3.3.3.1 Structure of cutter unit...........................................................................................................................................................................2-24
2.4 Printer Electrical System..............................................................................................................................................2-25
2.4.1 Outline........................................................................................................................................................................................ 2-25
2.4.1.1 Overview .......................................................................................................................................................................................................2-25
2.4.2 System Controller ...................................................................................................................................................................... 2-26
2.4.2.1 System controller components ......................................................................................................................................................................2-26
2.4.3 Engine Controller....................................................................................................................................................................... 2-27
2.4.3.1 Engine controller components.......................................................................................................................................................................2-27
2.4.4 Carriage Relay PCB................................................................................................................................................................... 2-28
2.4.4.1 Carriage relay PCB components ...................................................................................................................................................................2-28
2.4.5 Head Relay PCB ........................................................................................................................................................................ 2-28
2.4.5.1 Head relay PCB components ........................................................................................................................................................................2-28
2.4.6 Power Supply ............................................................................................................................................................................. 2-29
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