Canon IR2800, IR3300, IR2200 manual Image Processing System

CONTENTS

5.3 Sensors		2-24R	5.3.3	Removing the Original Cover
5.3.1	Removing the Original Detec-			Sensor	2-25R
	tion Unit	2-24R	5.4 PCBs		2-26R
5.3.2	Removing the HP Sensor		5.4.1	Removing the Inverter PCB
	........................................	2-24R		........................................	2-26R

CHAPTER 3 IMAGE PROCESSING SYSTEM

1	Outline		...........................................	3-1R
2	Analog Image Processing			3-2R
	2.1	Outline		3-2R
	2.2	Driving the CCD		3-2R
	2.3	Gain Correction and Offset Correc-
		tion of the CCD Output		3-3R
	2.4	A/D Conversion of the CCD Output
		................................................		3-3R
3	Digital Image Processing			3-4R
	3.1	Outline		3-5R
	3.2	Shading Correction		3-5R
	3.2.1		Outline	3-5R
	3.2.2		Shading Adjustment	3-6R
	3.2.3		Shading Correction	3-6R

3.2.4Edge Gain Correction (ADF in

		use)	3-6R
3.3	Auto Density Adjustment (AE)
	................................................		3-7R
3.3.1		Outline	3-7R
3.3.2		ABC Circuit	3-7R
3.4	Related Service Mode		3-8R
4 Disassembly and Assembly			3-9R
4.1	External Covers		3-10R

4.1.1 External Covers 3-10R

4.1.2Removing the Reader Right

Cover 3-10R

4.1.3Removing the Copyboard Glass

........................................ 3-11R

4.1.4After Mounting the Copyboard

Glass	3-11R
4.2 CCDs	3-12R

4.2.1Removing the CCD Unit 3-12R

4.2.2Points to Note When Replacing

the CCD Unit	3-13R
4.3 Frames	3-14R

4.3.1Removing the Left ADF Base

Unit 3-14R

4.3.2Removing the Reader Upper

Frame 3-14R

4.3.3Mounting the Reader Upper

Frame	3-15R
4.4 PCBs	3-16R

4.4.1Removing the Reader Control-

ler PCB 3-16R

4.4.2When Replacing the Reader

Controller PCB 3-16R

R2 COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001