Canon 2163B002 service manual Main Controller Main controller components

Chapter 2

Maintenance cartridge

relay PCB

Ink tank

Purge motor

Valve motor

Carriage motor

Fans

Solenoids

		Printhead
	Head relay PCB
		Temperature
		read control
		DI Sensor
		read control
Multi sensor		Multi sensor
		control
	Carriagerelay PCB
		Image data
		demodulating
		Printhead drive
		power generation
		Interface	Host computer
		control
Image data control
		Operation panel	Operation panel
Remaining ink		control
detection		Sensor	Sensors
		detection
			Feed motor
		Motor control	Lift motor
		Fans control	Media take-up PCB
		Solenoids control	Motor control
Maincontroller		EEPROM control
			Media take-up
			motor

Power supply

+5.1V generation AC inlet

+32V generation

F-2-17

2.4.2 Main Controller

2.4.2.1 Main controller components

IC1	IC3203
IC601	IC2802
IC602
IC603	IC2900
IC604	IC3900
IC701 IC2	IC3100 IC802

F-2-18

a) ASIC(IC1,IC2)

The ASIC(IC1/IC2) with a 32/16-bit internal bus is driven in sync with the 132/66 MHz external clock. It supports the following functions:

Image processing unit

This unit converts the RGB multi-bit image data or CMYK multi-bit data received from the host computer through the interface connector to the binary image data for the ink colors used.

DMA controller

This controller controls the input interfaces such as the USB and expansion card slot as well as DMA transfer of the data to be stored in the DIMM.

Image data generation/output function

This function generates image data for color printing from the received image data and the mask pattern (corresponding to print mode) stored in the DIMM, and store the generated image data in another DIMM. It also outputs the generated image data to the carriage relay PCB.

Interrupt controller

This controller receives and processes internal interrupts and external interrupts from the USB, image processing unit, and expansion card slot.

Timer function

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