Canon 2163B002 service manual Basic Operation Outline, Firmware, Printer Diagram, Print Driving

Chapter 2

2.1 Basic Operation Outline

2.1.1 Printer Diagram

A printer diagram is shown below.

		J502
Lift cam sensor
	Multi sensor	J501	relay PCB
			Head
Printhead(L)	Printhead(R)

J201	J801			J105
J203	J803	Carriage relay PCB		J104
J202	J802
				J101
J101	J701
				J103
J102	J702
				J102
J103	J703
		J201	J202

J3601 J3602 J3401 J3501 J3502

					Ink detection sensor
							J108
J3201
		J101		Ink tank ROM PCB(L)
					Ink tank
			Y, PC, C, PGY, GY, MBK
J2402						Valve motor(L)
	Valve open/closed detection sensor(L)
				Ink tank cover switch(L)
				Agitation cam sensor(L)
						Ink tank
					PM, M, BK, R, G, B
		J101		Ink tank ROM PCB(R)
J3202

Linear encoder
Carriage cover sensor
Upper cover lock solenoid(L)	J2702
Upper cover lock solenoid(R)
Upper cover lock switch(L)	J3001
Upper cover lock switch(R)
Carriage motor	J3150
Feed motor	J2801
Operation panel	J2601
Power supply	J1801

Media take up relay PCB	J101	J3003
J102
J101
Media take-up PCB

J103	J102
	Media take-up motor

Media take-up on/off sensor

Media take-up paper detection sensor

Head management sensor

PCB

J108

Ink detection sensor

Main controller

J2502

Valve motor(R)

Valve open/closed detection sensor(R)

Ink tank cover switch(R)

Agitation cam sensor(R)

J3002

Humidity sensor

Carriage HP sensor

Lift motor

J2501

Pressure release switch

Purge motor

Pump encoder

Pump cam sensor

Media sensor

Feed roller encoder

Feed roller HP sensor

J2701

Spool clutch

Suction fan

Mist fan(R)

Mist fan(L)

Maintenance cartridge ROM PCB

J3301

J2

J1

Maintenance cartridge relay PCB

F-2-1

2.1.2 Print Driving

During printing, print signals and control signals are issued to the printhead via the carriage relay PCB and Head relay PCB in order to discharge ink from the nozzles.

On a printhead, six arrays of nozzles are provided in six arrays in a staggered pattern. This printer uses a pair of printheads.

(The Y, PC, C, PGy, Gy, MBk, PM, M, Bk, R, G, B nozzles are mounted in this order from the left.)

Even-numbered nozzle data and odd-numbered nozzle data -- which are print signals -- are sent to each nozzle array in sync with the data sending clock and data latch pulse timings.

Drive control signals include a Heat Enable signal and a Sub Heat Enable signal. The Heat Enable signal is used to discharge ink from nozzles. The Sub Heat Enable signal is used to raise the printhead temperature to a suitable value to maintain the ink discharge amount constant.

2.2 Firmware

2.2.1 Operation Sequence at Power-on

The sequence of printer operations, from power-on to transition to online mode, is flowcharted below. The printer takes less than 1 minute to initialize itself(*).

* Excluding the times spent supplying inks and cleaning the printhead after leaving the printer for extended periods of time

2-1