Contents
Contents
5.1 Construction ...................................................................................................................................................................5-1
5.1.1 Specifications, Control Mechanisms, and Functions................................................................................................................... 5-1
5.1.2 Major Components....................................................................................................................................................................... 5-1
5.1.3 Construction of the Control System............................................................................................................................................. 5-2
5.1.4 Reader Controller PCB ................................................................................................................................................................ 5-3
5.2 Basic Sequence ..............................................................................................................................................................5-4
5.2.1 Basic Sequence of Operations at Power-On ................................................................................................................................ 5-4
5.2.2 Basic Sequence of Operations in Response to a Press on the Start Key (book mode, 1 original)............................................... 5-4
5.2.3 Basic Sequence of Operations in Response to a Press on the Start Key (ADF mode, 1 original)............................................... 5-5
5.3 Various Control Mechanisms.........................................................................................................................................5-6
5.3.1 Controlling the Scanner Drive System ........................................................................................................................................ 5-6
5.3.1.1 Overview .........................................................................................................................................................................................................5-6
5.3.1.2 Reader Motor Control .....................................................................................................................................................................................5-6
5.3.2 Contact Image Sensor (CIS) ........................................................................................................................................................ 5-8
5.3.2.1 Overview .........................................................................................................................................................................................................5-8
5.3.2.2 Analog Control Inside the Contact Image Sensor (CIS).................................................................................................................................5-9
5.3.3 Enlargement/Reduction................................................................................................................................................................ 5-9
5.3.3.1 Changing the Magnification in Main Scanning Direction ..............................................................................................................................5-9
5.3.3.2 Changing the Magnification in Sub Scanning Direction ................................................................................................................................5-9
5.3.4 Controlling the Scanning Lamp ................................................................................................................................................. 5-10
5.3.4.1 Scanning Lamp..............................................................................................................................................................................................5-10
5.3.4.2 Overview .......................................................................................................................................................................................................5-10
5.3.4.3 Activation Control.........................................................................................................................................................................................5-10
5.3.4.4 Error Detection..............................................................................................................................................................................................5-10
5.3.5 Detecting the Size of Originals .................................................................................................................................................. 5-10
5.3.5.1 Overview .......................................................................................................................................................................................................5-10
5.3.5.2 Points of Original Size Detection..................................................................................................................................................................5-11
5.3.5.3 Overview of Detection Operation .................................................................................................................................................................5-11
5.3.6 Dirt Sensor Control .................................................................................................................................................................... 5-13
5.3.6.1 Overview .......................................................................................................................................................................................................5-13
5.3.7 Image Processing ....................................................................................................................................................................... 5-15
5.3.7.1 Overview .......................................................................................................................................................................................................5-15
5.3.7.2 Driving the CCD ...........................................................................................................................................................................................5-15
5.3.7.3 Gain Correction and Offset Correction for the CCD Output ........................................................................................................................5-16
5.3.7.4 A/D Conversion of the CCD Output.............................................................................................................................................................5-16
5.3.7.5 Shading Correction (outline).........................................................................................................................................................................5-16
5.3.7.6 Shading Adjustment ......................................................................................................................................................................................5-16
5.3.7.7 Shading Correction........................................................................................................................................................................................5-16
5.4 Parts Replacement Procedure.......................................................................................................................................5-17
5.4.1 Copyboard Glass........................................................................................................................................................................ 5-17
5.4.1.1 Removing the Copyboard Glass....................................................................................................................................................................5-17
5.4.1.2 After Replacing the Copyboard Glass...........................................................................................................................................................5-17
5.4.1.3 Removing the ADF Reading Glass ...............................................................................................................................................................5-17
5.4.1.4 After Replacing the ADF Reading Glass ......................................................................................................................................................5-18
5.4.2 Reader Controller PCB .............................................................................................................................................................. 5-18
5.4.2.1 Before Replacing the Reader Controller PCB ..............................................................................................................................................5-18
5.4.2.2 Before Removing the Reader Controller PCB ..............................................................................................................................................5-18
5.4.2.3 Removing the Reader Controller PCB..........................................................................................................................................................5-18
5.4.2.4 After Replacing the Reader Controller PCB.................................................................................................................................................5-19
5.4.3 Inverter PCB .............................................................................................................................................................................. 5-20
5.4.3.1 Before Removing the Inverter PCB ..............................................................................................................................................................5-20
5.4.3.2 Removing the Inverter PCB ..........................................................................................................................................................................5-20
5.4.4 Scanner Motor............................................................................................................................................................................ 5-21
Summary of Contents for iR C2880 series
Page 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series ...
Page 2: ......
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Page 23: ...Chapter 1 Introduction ...
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Page 53: ...Chapter 2 Installation ...
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Page 127: ...Chapter 3 Basic Operation ...
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Page 137: ...Chapter 4 Main Controller ...
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Page 161: ...Chapter 5 Original Exposure System ...
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Page 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69 ...
Page 189: ...Chapter 6 Laser Exposure ...
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Page 207: ...Chapter 7 Image Formation ...
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Page 257: ...Chapter 8 Pickup Feeding System ...
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Page 303: ...Chapter 9 Fixing System ...
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Page 321: ...Chapter 10 Externals and Controls ...
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Page 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled ...
Page 337: ...Chapter 10 10 11 F 10 11 ...
Page 359: ...Chapter 11 MEAP ...
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Page 401: ...Chapter 12 RDS ...
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Page 411: ...Chapter 13 Maintenance and Inspection ...
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Page 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4 ...
Page 421: ...Chapter 14 Standards and Adjustments ...
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Page 431: ...Chapter 15 Correcting Faulty Images ...
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Page 459: ...Chapter 16 Self Diagnosis ...
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Page 481: ...Chapter 17 Service Mode ...
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Page 571: ...Chapter 18 Upgrading ...
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Page 603: ...Chapter 19 Service Tools ...
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Page 609: ...Aug 29 2006 ...
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