
Contents
Contents
5.1 Construction ...................................................................................................................................................................5-1
5.1.1 Specifications/controls/functions ................................................................................................................................................. 5-1
5.1.2 Major Components....................................................................................................................................................................... 5-2
5.1.3 Configuration of Control System................................................................................................................................................. 5-3
5.1.4 Reader Controller PCB ................................................................................................................................................................ 5-4
5.2 Basic Sequence ..............................................................................................................................................................5-5
5.2.1 Basic Sequence at Power-On ....................................................................................................................................................... 5-5
5.2.2 Basic Sequence at Start Key ON (book mode/1 original) ........................................................................................................... 5-5
5.2.3 Basic Sequence at Start Key ON (ADF mode/1 original) ........................................................................................................... 5-5
5.3 Various Control..............................................................................................................................................................5-6
5.3.1 Controlling the Scanner Drive System ........................................................................................................................................ 5-6
5.3.1.1 Overview .........................................................................................................................................................................................................5-6
5.3.1.2 Scanner Motor Control....................................................................................................................................................................................5-6
5.3.2 CCD ............................................................................................................................................................................................. 5-8
5.3.2.1 Overview .........................................................................................................................................................................................................5-8
5.3.3 Enlargement/Reduction.............................................................................................................................................................. 5-11
5.3.3.1 Magnifications in Main Scanning Direction .................................................................................................................................................5-11
5.3.3.2 Magnification in Sub Scanning Direction.....................................................................................................................................................5-11
5.3.4 Detecting the Size of Originals .................................................................................................................................................. 5-12
5.3.4.1 Overview .......................................................................................................................................................................................................5-12
5.3.4.2 Control Details ..............................................................................................................................................................................................5-12
5.3.4.3 Detection Operation Overview .....................................................................................................................................................................5-14
5.3.5 Dirt Sensor Control .................................................................................................................................................................... 5-15
5.3.5.1 Overview .......................................................................................................................................................................................................5-15
5.3.5.2 White Board Dust Detection Control ............................................................................................................................................................5-17
5.3.6 Image Processing ....................................................................................................................................................................... 5-18
5.3.6.1 Overview .......................................................................................................................................................................................................5-18
5.3.6.2 CCD Drive ....................................................................................................................................................................................................5-18
5.3.6.3 Gain Correction and Offset Correction of CCD Output ...............................................................................................................................5-18
5.3.6.4 A/D Conversion of CCD Output...................................................................................................................................................................5-19
5.3.6.5 Shading Correction (overview) .....................................................................................................................................................................5-19
5.3.6.6 Shading Adjustment ......................................................................................................................................................................................5-19
5.3.6.7 Shading Correction........................................................................................................................................................................................5-19
5.4 Parts Replacement Procedure.......................................................................................................................................5-20
5.4.1 CCD Unit ................................................................................................................................................................................... 5-20
5.4.1.1 Removing the CCD Unit ...............................................................................................................................................................................5-20
5.4.1.2 When Replacing the CCD Unit.....................................................................................................................................................................5-21
5.4.2 CCD Cover Unit ........................................................................................................................................................................ 5-21
5.4.2.1 Removing the CCD Cover Unit ....................................................................................................................................................................5-21
5.4.3 Copyboard glass......................................................................................................................................................................... 5-21
5.4.3.1 Removing the Copyboard Glass....................................................................................................................................................................5-21
5.4.3.2 When Replacing the Copyboard Glass .........................................................................................................................................................5-22
5.4.3.3 Removing the ADF Reading Glass ...............................................................................................................................................................5-23
5.4.3.4 When Replacing the ADF Reading Glass .....................................................................................................................................................5-23
5.4.4 Reader Controller PCB .............................................................................................................................................................. 5-24
5.4.4.1 Points to Note Before Replacing the Reader Controller PCB.......................................................................................................................5-24
5.4.4.2 Removing the Reader Controller PCB ..........................................................................................................................................................5-24
5.4.4.3 After Replacing the Reader Controller PCB .................................................................................................................................................5-24
5.4.5 LED Driver PCB........................................................................................................................................................................ 5-25
5.4.5.1 Removing the LED Driver PCB ...................................................................................................................................................................5-25
5.4.6 Scanner Motor............................................................................................................................................................................ 5-25
5.4.6.1 Removing the Scanner Motor .......................................................................................................................................................................5-25
5.4.7 Copyboard Cover Open/Close Sensor ....................................................................................................................................... 5-25
Содержание 3225
Страница 1: ...Jul 3 2008 Service Manual iR3245 3235 3230 3225 Series ...
Страница 2: ......
Страница 6: ......
Страница 25: ...Chapter 1 Introduction ...
Страница 26: ......
Страница 28: ......
Страница 64: ......
Страница 65: ...Chapter 2 Installation ...
Страница 66: ......
Страница 120: ......
Страница 121: ...Chapter 3 Basic Operation ...
Страница 122: ......
Страница 124: ......
Страница 128: ......
Страница 129: ...Chapter 4 Main Controller ...
Страница 130: ......
Страница 132: ......
Страница 134: ...Chapter 4 4 2 F 4 1 1 5 8 9 11 14 12 3 4 10 2 13 7 15 16 17 ...
Страница 152: ......
Страница 153: ...Chapter 5 Original Exposure System ...
Страница 154: ......
Страница 184: ......
Страница 185: ...Chapter 6 Laser Exposure ...
Страница 186: ......
Страница 188: ......
Страница 197: ...Chapter 7 Image Formation ...
Страница 198: ......
Страница 227: ...Chapter 8 Pickup Feeding System ...
Страница 228: ......
Страница 232: ......
Страница 244: ...Chapter 8 8 12 For iR3245 3235 3230 F 8 14 1 2 3 4 ...
Страница 261: ...Chapter 8 8 29 10 11 12 13 14 3 1 2 4 5 4 4 1 2 3 5 4 1 2 3 5 5 4 1 2 3 5 4 1 2 3 5 ...
Страница 278: ......
Страница 279: ...Chapter 9 Fixing System ...
Страница 280: ......
Страница 282: ......
Страница 297: ...Chapter 10 External and Controls ...
Страница 298: ......
Страница 302: ......
Страница 315: ...Chapter 10 10 13 2 Uncheck SNMP Status Enabled F 10 11 ...
Страница 342: ......
Страница 343: ...Chapter 11 MEAP ...
Страница 344: ......
Страница 346: ......
Страница 397: ...Chapter 12 e maintenance imageWARE Remote ...
Страница 398: ......
Страница 400: ......
Страница 408: ......
Страница 409: ...Chapter 13 Maintenance and Inspection ...
Страница 410: ......
Страница 412: ......
Страница 424: ...Chapter 13 13 12 ...
Страница 425: ...Chapter 14 Standards and Adjustments ...
Страница 426: ......
Страница 428: ......
Страница 433: ...Chapter 14 14 5 Execute the following in Service Mode ADF white level adjustment COPIER FUNCTION CCD DF WLVL1 2 3 4 ...
Страница 436: ......
Страница 437: ...Chapter 15 Correcting Faulty Images ...
Страница 438: ......
Страница 440: ......
Страница 465: ...Chapter 16 Self Diagnosis ...
Страница 466: ......
Страница 468: ......
Страница 493: ...Chapter 17 Service Mode ...
Страница 494: ......
Страница 498: ......
Страница 690: ......
Страница 691: ...Chapter 18 Upgrading ...
Страница 692: ......
Страница 694: ......
Страница 738: ...Chapter 18 18 44 ...
Страница 739: ...Chapter 19 Service Tools ...
Страница 740: ......
Страница 741: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools 19 1 19 1 2 Oils and Solvents 19 1 ...
Страница 742: ......
Страница 744: ......
Страница 745: ...Jul 3 2008 ...
Страница 746: ......