Technical information

ManualsBrandsCanon ManualsAll in One PrinterFY8-13FW-000DADF-A1

2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

CONTENTS

CHAPTER 3 IMAGE PROCESSING SYSTEM

5.3 Sensors .................................. 2-24R

5.3.1 Removing the Original

Detection Unit ................. 2-24R

5.3.2 Removing the HP

Sensor ............................. 2-24R

5.3.3 Removing the Original

Cover Sensor .................. 2-25R

5.4 PCBs ..................................... 2-26R

5.4.1 Removing the Inverter

PCB ................................ 2-26R

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

Correction 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

3.2.4 Edge 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

4.1.2 Removing the Reader

Right Cover ..................... 3-10R

4.1.3 Removing the

Copyboard Glass ............ 3-11R

4.1.4 After Mounting the

Copyboard Glass ............ 3-11R

4.2 CCDs .................................... 3-12R

4.2.1 Removing the CCD Unit . 3-12R

4.2.2 Points to Note When

Replacing the CCD Unit . 3-13R

4.3 Frames ................................... 3-14R

4.3.1 Removing the Left ADF

Base Unit ........................ 3-14R

4.3.2 Removing the Reader

Upper Frame ................... 3-14R

4.3.3 Mounting the Reader

Upper Frame ................... 3-15R

4.4 PCBs ..................................... 3-16R

4.4.1 Removing the Reader

Controller PCB ............... 3-16R

4.4.2 When Replacing the

Reader Controller PCB ... 3-16R