Ricoh VT6000, VT3800 Service Manual

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RICOH GROUP COMPANIES

C223/C228

SERVICE MANUAL

PN: RCSM3800

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SERVICE MANUAL

C223/C228

RICOH GROUP COMPANIES

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C223/C228

SERVICE MANUAL

PN: RCSM3800

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It is the reader's responsibility when discussing the information contained within this document to maintain a level of confidentiality that is in the best interest of Ricoh Corporation and its member companies.

NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY

FASHION AND DISTRIBUTED WITHOUT THE PRIOR

PERMISSION OF RICOH CORPORATION.

All product names, domain names or product illustrations, including desktop images, used in this document are trademarks, registered trademarks or the property of their respective companies.

They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies. No such use, or the use of any trade name, or web site is intended to convey endorsement or other affiliation with Ricoh products.

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WARNING

The Service Manual contains information regarding service techniques, procedures, processes and spare parts of office equipment distributed by Ricoh Corporation. Users of this manual should be either service trained or certified by successfully completing a Ricoh Technical Training Program.

Untrained and uncertified users utilizing information contained in this service manual to repair or modify Ricoh equipment risk personal injury, damage to property or loss of warranty protection.

Ricoh Corporation

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LEGEND

PRODUCT CODE COMPANY

GESTETNER RICOH SAVIN

C223 5385 (VT3800) 3300DNP C228 5390 (VT6000) 3400DNP

DOCUMENTATION HISTORY

REV. NO. DATE COMMENTS

1 7/97 Updated Pages 2 4/98 C228 Addition

3/96 Original Printing

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Rev. 4/98

OVERALL MACHINE INFORMATION

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. GUIDE TO COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3. MECHANICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . 1-6

4. DRIVE LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

5. ELECTRICAL COMPONENT DESCRIPTIONS . . . . . . . . . . . . . . 1-12

6. PRINTING PROCESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

7. MAJOR DIFFERENCES BETWEEN THE VT3600 AND

THE VT3800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

DETAILED SECTION DESCRIPTIONS

1. MASTER EJECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.2 MASTER EJECT ROLLER ROTATION MECHANISM . . . . . . . . . . . . . . . . . . 2-2

1.3 MASTER EJECT ROLLER DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . 2-3

1.4 MASTER EJECT CLAMPER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

1.5 PRESSURE PLATE UP/DOWN MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . 2-7

1.6 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2. SCANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.2 SCANNER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

2.3 PLATEN COVER POSITION DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

2.4 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.4.1 Platen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.4.2 ADF Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

3. MASTER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

3.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

3.2 MASTER FEED CLAMPER OPENING MECHANISM . . . . . . . . . . . . . . . . . 2-20

3.3 MASTER FEED MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

3.4 MASTER WRAPPING MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

3.5 CUTTER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

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3.6 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

4. PAPER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

4.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

4.2 PAPER TABLE UP/DOWN MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

4.3 FEED ROLLER PRESSURE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

4.4 PAPER SEPARATIO N MEC HAN I SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

4.5 PAPER F EED ROLLER/UPPER SEPARATION ROLLER MECHANISM . . 2-34

4.6 SECOND FEED ROLLER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

4.7 PAPER SIZE DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38

4.8 SEPARATION RO LL ER PR ESSUR E RELE ASE MECHANISM . . . . . . . . . 2-41

4.9 PAPER TABLE SIDE ADJUSTMENT MECHANISM . . . . . . . . . . . . . . . . . . . 2-42

4.10 NOISE REDUCTION COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

4.11 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44

5. PRINTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45

5.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45

5.2 PAPER DETECTION AND PRINTING PRESSURE

ON/OFF MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46

5.3 PRINTING PRESSUR E RELE ASE MECHANISM . . . . . . . . . . . . . . . . . . . . 2-47

5.4 QUALITY START OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48

5.5 PRINTING PRESSURE ON/OFF MECHANISM FOR A4/LT DRUM . . . . . . . 2-49

5.6 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50

6. DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

6.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

6.2 DRUM ROTATION MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52

6.3 DRUM LOCK MECHANISM 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53

6.4 DRUM LOCK MECHANISM 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

6.5 DRUM LOCK MECHANISM 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55

6.6 DRUM CONNECTION MECHANISM/DRUM LOCK MECHANISM 4 . . . . . . 2-56

6.7 INK SUPPLY MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57

6.8 INK KNEADING MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58

6.9 DRUM MASTER DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

6.10 INK DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61

7. DELIVERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

7.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

7.2 EXIT PAWL DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64

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7.3 VACUUM UNIT DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65

7.4 EXIT PAWL AIR PUMP MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66

7.5 WING GUIDE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67

7.6 PAPER DELIVERY TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68

7.6.1 Master Eject Unit Lock Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68

7.6.2 Paper Delivery Table Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69

7.7 ELECTRICAL TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70

8. IMAGE POSITIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71

8.1 OVERALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71

8.2 IMAGE POSITIONING MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71

8.3 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73

9. IMAGE PROCESSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-74

9.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-74

9.2 CCD (CHARGE COUPLED DEVICE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75

9.3 A/D CONVERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76

9.3.1 Inversion and Amplification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-77

9.3.2 A/D Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-77

9.3.3 Shading Distortion Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78

9.3.4 Original Background Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-79

9.3.5 Peak Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-79

9.3.6 Black Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80

9.3.7 White Peak Limit Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80

9.4 BINARY PROCESSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-81

9.4.1 MTF Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-82

9.4.2 Main Scan Magnification And Image Shift Processing . . . . . . . . . . . . . . 2-85

9.4.3 Binary Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-87

9.4.4 Photo Data Compensation Processing . . . . . . . . . . . . . . . . . . . . . . . . . . 2-88

9.4.5 Half-tone Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-90

9.4.6 Line/Photo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-95

9.4.7 Multi-copy Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-96

9.4.8 Shadow Detection in Platen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-97

9.4.9 Make-up Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-98

9.5 MASTER MAKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-106

9.5.1 Thermal Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-106

9.5.2 Thermal Head Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-107

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9.5.3 Thermal Head Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-108

10. OTHERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-109

10.1 TEST SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-109

10.2 MASTER MAKING AND PRINTING AREAS . . . . . . . . . . . . . . . . . . . . . . . 2-110

10.3 PAPER MISFEED DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-114

11. COMBINATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-115

3. INSTALLATION

1. INSTALLATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.1 OPTIMUM ENVIRONMENTAL CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.2 ENVIRONMENTS TO AVOID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

1.3 POWER CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

1.4 ACCESS TO THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

2. ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3. INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4. MAKE-UP FUNCTION BOARD INSTALLATION

PROCEDURE (OPTION) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

4. SERVICE TABLES

1. SERVICE REMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

2.1 MAINTENANCE TABLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

2.1.1 Lubrication Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

2.1.2 User’s Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

2.1.3 Periodic Inspection (every 6 months) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

2.1.4 Periodic Inspection (every 12 months) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

2.2 SERVICE CALL CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

2.3 DIP SWITCHES, LEDs, VRs, TPs (ON THE MAIN CONTROL PCB) . . . . . . 4-10

2.3.1 DIP Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

2.3.2 Photodiodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

2.3.3 VRs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

2.3.4 TPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

2.4 EXPECTED LIFE OF PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

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2.5 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

3. SERVICE PROGRAM MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

3.1 SERVICE PROGRAM MODE OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

3.1.1 Service Program Mode Access Procedure (for technicians). . . . . . . . . . 4-13

3.1.2 Service Program Mode Access Procedure (for users) . . . . . . . . . . . . . . 4-14

3.1.3 Change Adjustment Values or Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

3.2 SERVICE PROGRAM TABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

3.3 THERMAL HEAD TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

3.4 COMMAND SHEET CHECK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

3.5 INPUT/OUTPUT CHECK MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

3.5.1 Input Check Mode Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

3.5.2 Output Check Mode Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

3.5.3 Input Check Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

3.5.4 Output Check Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

3.6 USER CODE MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

3.6.1 User Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

3.6.2 How To Use a User Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

4. DRUM INTERCHANGEABILITY. . . . . . . . . . . . . . . . . . . . . . . . . . 4-43

5. REPLACEMENT AND ADJUSTMENT

1. EXTERIOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1.1 EXTERIOR COVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

2. SCANNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

2.1 SCANNER POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

2.2 EXPOSURE LAMP REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

2.3 SCANNER TIMING BELTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

3. OPTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

3.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

3.2 PREPARATION FOR ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

3.3 REDUCTION RATIO ADJUSTMENT (MOIRE ADJUSTMENT) . . . . . . . . . . . . 5-8

3.4 FOCUS ADJUSTMENT (MTF ADJUSTMENT). . . . . . . . . . . . . . . . . . . . . . . . . 5-9

3.5 READIN G START POSITION IN THE MAIN SCAN

DIRECTION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

3.6 SCAN LINE POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

SM v C223/C228

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Rev. 4/98

3.7 SHADING PLATE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

3.8 WHITE LEVEL AND BLACK LEVEL ADJUSTMENT . . . . . . . . . . . . . . . . . . 5-13

3.9 MAIN-SCAN IMAGE POSITION ADJUSTMENT (PLATEN MODE). . . . . . . . 5-14

3.10 SUB-SCAN IMAG E MAG NI FI CAT ION

ADJUSTMENT (PLATEN MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

4. MASTER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

4.1 THERMAL HEAD VOLTAGE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . 5-15

4.2 BELT TENSION ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

4.3 RIGHT AND LEFT CUTTER SWITCHES ADJUSTMENT . . . . . . . . . . . . . . . 5-17

4.4 THERMAL HEAD ALIGNMENT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-18

4.5 CUTTER UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

4.6 THERMAL HEAD REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

4.7 THERMAL HEAD DRIVE PCB REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

5. MASTER EJECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

5.1 MASTER EJECT SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

5.2 MASTER EJECT SOLENOID POSITION ADJUSTMENT . . . . . . . . . . . . . . 5-23

5.3 AIR KNIFE MOTOR SAFETY SWITCH ADJUSTMENT . . . . . . . . . . . . . . . . 5-24

5.4 MASTER EJECT UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

5.5 MASTER EJECT SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

5.6 MASTER EJECT BELTS/ROLLERS REMOVAL . . . . . . . . . . . . . . . . . . . . . 5-27

6. PAPER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28

6.1 PAPER TABLE OPEN SWITCH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . 5-28

6.2 PAPER TABLE HEIGHT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

6.3 PAPER FEED ROLLER PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . . 5-30

6.4 LOWER GUIDE PLATE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

6.5 SEPARATION PLATE PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . . 5-33

6.6 FEED LENGTH OF THE PAPE R FEED RO L LER ADJU ST ME NT . . . . . . . 5-34

6.7 PAPER FEED SECTOR G EAR ST OP PER CL EARAN CE

ADJUST MENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

6.8 SECOND FEED ROLLER SECTOR GEAR STOPPER

CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36

6.9 FEED LENGTH OF THE SECOND FEED ROLLER ADJUSTMENT. . . . . . . 5-37

6.10 SECOND FEED ROLLER START TIMING . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

6.11 PAPER FEED ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

6.12 PAPER FEED ROLLER UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

6.13 UPPER SEPARATI O N ROL LER REMO VAL . . . . . . . . . . . . . . . . . . . . . . . 5-42

C223/C228 vi SM

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6.14 SEPARATION PLAT E/ L O WE R SEPAR AT I ON

ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43

6.15 PAPER FEED TABLE REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-44

7. PRINTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45

7.1 PAPER DETECTION ARM CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . 5-45

7.2 PRESS ROLLER POSITION ADJUSTMENT 1 . . . . . . . . . . . . . . . . . . . . . . . 5-46

7.3 PRESS ROLLER POSITION ADJUSTMENT 2

(FOR THE A4/LT DRUM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-47

7.4 PRESSURE TIMING ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48

7.5 PRINTING PRESSURE ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49

7.6 PRINTING PRESSURE SOLENOID CLEARANCE ADJUSTMENT . . . . . . . 5-50

7.7 MASTER PRESS SHEET SOLENOID POSITION ADJUSTMENT . . . . . . . . 5-51

7.8 PRESS ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52

8. DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53

8.1 MAIN DRIVE BELT TENSION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . 5-53

8.2 DRUM MASTER SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54

8.3 PRINTING SPEED ADJU S TM EN T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55

8.4 DRUM STOPPER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-56

8.5 MASTER FEED CLAMPER CAM ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 5-57

8.6 MASTER EJECT CLAMPER CAM ADJUSTMENT . . . . . . . . . . . . . . . . . . . 5-58

8.7 INK DETECTION PIN ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-59

8.8 INK ROLLER GAP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-60

8.9 INK ROLLER POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-61

8.10 INK SUPPLY SOLENOID ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 5-62

8.11 INK DETECTION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-63

8.12 INK ROLLER BLADE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64

8.13 DRUM SCREEN REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-65

8.14 DRUM DRIVE BELT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-66

9. DELIVERY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-70

9.1 FIRST PAPER EXIT SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . 5-70

9.2 SECOND PAPER EXIT SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . 5-71

9.3 EXIT PAWL CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-72

9.4 EXIT PAWL TIMING ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-73

9.5 PAPER EXIT PAWL AIR PUMP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-74

9.6 TRANSPORT UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-75

SM vii C223/C228

Page 19

Rev. 7/98

10. IMAGE POSITIONING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76

10.1 IMAGE POSITION ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76

6. TROUBLESHOOTING

1. ELECTRICAL COMPONENT PROBLEMS . . . . . . . . . . . . . . . . . . 6-1

2. IMAGE AND PAPER FEED PROBLEMS. . . . . . . . . . . . . . . . . . . . 6-5

2.1 IMAGE QUALITY PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

2.2 PAPER FEED PROBLEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

7. DOCUMENT FEEDER C526

1. OVERALL MACHINE INFORMATION . . . . . . . . . . . . . . . . . . . . . 7-1

1.1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

1.2 MECHANICAL COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

1.3 ELECTRICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

2. SECTIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

2.1 DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

2.2 PAPER FEED AND SEPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

2.3 ORIGINAL SIZE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

2.4 ORIGINAL MISFEED DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

2.5 ADF OPEN/CLOSE DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

2.6 ADF POSITION DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

3. INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

3.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

3.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

4. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

4.1 USER’S MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

4.2 PERIODIC INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

5. REPLACEMENT AND ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . 7-12

5.1 ADF UNIT REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

5.2 ADF COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

5.3 ADF UPPER UNIT REMO VA L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

5.4 SEPARATION ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

C223/C228 viii SM

Page 20

Rev. 4/98

5.5 ORIGINAL SET SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

5.6 ORIGINAL REGISTRATION SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . 7-17

5.7 PICK-UP ROLLER AND FEED ROLLER REMOVAL . . . . . . . . . . . . . . . . . 7-18

5.8 SCAN LINE SENSOR REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

5.9 ORIGINAL EXIT SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19

5.10 ADF COVER SENSOR REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

5.11 TRANSPORT ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

5.12 ADF MOTOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

5.13 PICK-UP TORQUE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

5.14 SHUTTER TORQUE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24

5.15 SEPARATION ROLLER TORQUE ADJUSTMENT . . . . . . . . . . . . . . . . . . 7-25

5.16 ORIGINAL SKEW ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

5.17 ORIGINAL SEPARATION PRESSURE ADJU S TM EN T . . . . . . . . . . . . . . . 7-27

5.18 ADF HEIGHT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28

5.19 IMAGE SCAN MAGNIFICATION ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . 7-29

5.20 IMAGE CENTER ADJUSTMENT (SIDE-TO-SIDE) . . . . . . . . . . . . . . . . . . . 7-29

5.21 SCANNER LEADING EDGE REGISTRATION ADJUSTMENT. . . . . . . . . . 7-29

8. DOCUMENT FEEDER C550

1. OVERALL MACHINE INFORMATION . . . . . . . . . . . . . . . . . . . . . 8-1

1.1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

1.2 MECHANICAL COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

1.3 ELECTRICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

2. SECTIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

2.1 DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

2.2 PAPER FEED AND SEPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

2.3 ORIGINAL SIZE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

2.4 ORIGINAL MISFEED DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

2.5 ADF OPEN/CLOSE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

2.6 ADF POSITION DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

3. INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

3.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

4. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

4.1 USER’S MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

SM ix C223/C228

Page 21

Rev. 4/98

4.2 PERIODIC INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

5. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 8-12

5.1 ADF COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

5.2 ADF UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13

5.3 SEPARATION ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14

5.4 PICK-UP ROLLER AND FEED ROLLER REMOVAL . . . . . . . . . . . . . . . . . . 8-15

5.5 TRANSPORT ROLLER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

5.6 ORIGINAL REGISTRATION SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . 8-17

5.7 ADF POSITION SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18

5.8 ORIGINAL SET SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19

5.9 SCAN LINE SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20

5.10 ORIGINAL EXIT SENSOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20

5.11 ADF MOTOR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21

5.12 PICK-UP TORQUE AND SHUTTER TORQUE ADJUSTMENT . . . . . . . . . 8-22

5.13 SEPARATION ROLLER PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . 8-23

5.14 SEPARATION TORQUE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24

5.15 ORIGINAL SKEW ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24

5.16 ADF HEIGHT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25

5.17 IMAGE SCAN MAGNIFICATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 8-26

5.18 IMAGE CENTER ADJUSTMENT (SIDE-TO-SIDE) . . . . . . . . . . . . . . . . . . . 8-26

5.19 SCANNER LEADING EDGE REGISTRATION ADJUSTMENT . . . . . . . . . 8-27

9. LARGE CAPACITY TRAY C563

1. OVERALL MACHINE INFORMATION . . . . . . . . . . . . . . . . . . . . . . 9-1

1.1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

1.2 MECHANICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

1.3 ELECTRICAL COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

1.4 BASIC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

2. DETAILED SECTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . 9-7

2.1 TRAY SHIFT MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

2.2 PAPER SIZE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

2.3 CASSETTE LOADING MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

2.3.1 BOTTOM PLATE DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

2.3.2 CASSETTE LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

C223/C228 x SM

Page 22

Rev. 4/98

3. INSTALLATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

3.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

3.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

4. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19

4.1 SERVICE REMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19

4.2 PM TABLE (Every 6 months) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19

5. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 9-20

5.1 TRAY DRIVE BELT TENSION ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . 9-20

5.2 HORIZONTAL ADJUSTMENT OF THE BOTTOM PLATE . . . . . . . . . . . . 9-21

5.3 IMAGE POSITION INDICATOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 9-22

5.4 COVER OPEN SWITCH BRACKET POSITION ADJUSTMENT . . . . . . . . . 9-23

10. PCRIP-10 PRIPORT CONTROLLER

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

1.1 SYSTEM REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

1.2 INSTALLATION PROCEDURE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

1.3 PARTS LISTING: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

1.4 CABLING BETWEEN PCRIP-10 AND COMPUTER . . . . . . . . . . . . . . . . . . . 10-6

1.5 SYSTEM VERIFICATION AND DEFAULT CONFIGURATION . . . . . . . . . . . 10-8

1.6 CABLE PIN-OUT DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

1.7 RAM UPGRADE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

USER’S GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-19

1.8 REGULATORY NOTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

1.9 TRADEMARKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

1.10 HARDWARE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

1.11 PRIPORT CONTROLLER CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . 10-24

1.12 CONFIGURATION OF IBM PC AND COMPATIBLES. . . . . . . . . . . . . . . . 10-24

1.13 CONFIGURATION OF MACINTOSH COMPUTERS. . . . . . . . . . . . . . . . . 10-28

1.14 APPLICATION SO FTW AR E SET -UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-29

1.15 PRIPORT CONTROLLER OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30

1.16 COMMONLY ASKED QUESTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31

1.17 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-34

1.18 APPENDIX A - DIAGNOST IC ST AT U S PAG E . . . . . . . . . . . . . . . . . . . . . 10-37

SM xi C223/C228

Page 23

Rev. 7/98

TAPE MARKER C532

1. SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

2. BASIC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

2.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

2.2 DRIVE AND CUTTING MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

2.3 MANUAL CUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

3. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5

3.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5

3.2 INSTALLATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6

4. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 11-8

4.1 CUTTER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

4.2 CUTTER HOME POSITION SENSOR REPLACEMENT . . . . . . . . . . . . . . . 11-9

4.3 TAPE CUT LENGTH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10

C228 SERVICE MANUAL

OVERALL MACHINE INFORMATION

1. OVERALL MACHINE INFORMATION . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 SPECIFICATI ONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 MAJOR DIFFERENCES BETWEEN THE C223 AND THE C228 . . . . . . . . . . . 1-4

DETAILED SECTION DESCRIPTIONS

2. DETAILED SECTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 MASTER EJECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 MASTER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.1 MASTER FEED MECHANISMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.2 THERMAL HEAD PRESSURE RELEASE MECHANISM . . . . . . . . . . . . . 2-4

2.3 PAPER FEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.3.1 PAPER FEED R O LL ER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.3.2 PAPER SEPAR AT I ON PLAT E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.4 PRIN T ING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.4.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Printing Pressure Cam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Paper Detection and Printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

C223/C228 xii SM

Page 24

Rev. 4/98

Quality Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.4.2 PAPER DETEC T I ON AND PRINT I NG PRESSURE ON/OFF

MECHA N IS M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.5 IMAGE PROCESSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.5.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.5.2 MASTER MAKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.5.3 TH ERMAL HEAD PRO TECTIO N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.6 PAPER MISFEE D DETEC T I ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

INSTALLATION

3. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 INSTALLATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1.1 OPTIMUM ENVIRONMENTAL CONDITIONS. . . . . . . . . . . . . . . . . . . . . . 3-1

3.1.2 EN V I R ON MENTS TO AVOID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.1.3 POWER CONNECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.1.4 ACCESS TO THE MACHINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2 ACCESSORY CHECK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4. SERVICE TABLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 SERV I C E R EM ARKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 SERV I C E TABLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.2.1 MA I N TENANCE TABLE S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Lubrication Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

User’s Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Periodic Inspection (every 6 months). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Periodic Inspection (every 12 months). . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.2.2 SERVICE CALL CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.2.3 DIP SWITCHES, LEDS, VRS, TPS

(ON THE MAIN CONTROL PCB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Photodiodes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

VRs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

TPs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.2.4 EXPECTE D LIFE OF PAR TS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.2.5 SPECIAL TO O LS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.3 SERV I C E PR OGRAM MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.3.1 SE R VICE PROGRAM M O D E OPERATION . . . . . . . . . . . . . . . . . . . . . . 4-13

Service Program Mode Access Procedure (for engineers) . . . . . . . . . . . 4-13

Service Program Mode Access Procedure (for users). . . . . . . . . . . . . . . 4-14

Change Adjustment Values or Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

SM xiii C223/C228

Page 25

Rev. 12/2000

4.3.2 SERVICE PROGRAM TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4.3.3 THERMAL HEAD TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

4.3.4 COMMAND SHEET CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

4.3.5 INPUT/OUTPUT CHECK MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Input Check Mode Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Output Check Mode Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Input Check Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

4.3.6 USER CODE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

User Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

How To Use a User Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

5. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 MASTER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1.1 THERMAL HEAD VOLTAGE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 PAPER FEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.2.1 SECOND FEED ROLLER START TIMING . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.2.2 PAPER FEED ROLLER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.3 DELIVERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.3.1 EXIT PAWL TIMING ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.4 PAPER FEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.4.1 FEED LENGTH OF THE SECOND FEED ROLLER ADJUSTMENT . . . . 5-7

6. C228 POINT TO POINT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 6-1

C223/C228 xiv SM

Page 26

Page 27

IMPORTANT SAFETY NOTICES

PREVENTION OF PHYSICAL INJURY

1. Before disassembling or assembling parts of the printer and peripherals, make sure that the power cord is unplugged.

2. The wall outlet should be near the copier and easily accessible.

3. If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on, keep hands away from electrified or mechanically driven components.

HEALTH SAFETY CONDITIONS

1. If you get ink in your eyes by accident, try to remove it with eye drops or flush with water as first aid. If unsuccessful, get medical attention.

2. If you ingest ink by accident, induce vomiting by sticking a finger down your throat or by giving soapy or strong salty water to drink.

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS

1. The printer and its peripherals must be installed and maintained by a customer service representative who has completed the training course on those models.



CAUTION

The RAM board has a lithium battery which can explode if handled incorrectly. Replace only with the same type of RAM board. Do not recharge or burn this battery. Used RAM boards must be handled in accordance with local regulations.



ATTENTION

La carte RAM comporte une pile au lithium qui présente un risque d'explosion en cas de mauvaise manipulation. Remplacer la pile uniquement par une carte RAM identique. Ne pas recharger ni brûler cette pile. Les cartes RAM usagées doivent être éliminées conformément aux réglementations locales.

Page 28

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL

1. Dispose of replaced parts in accordance with local regulations.

2. Used ink and masters should be disposed of in an envionmentally safe manner and in accordance with local regulations.

3. When keeping used lithium batteries (from the main control boards) in order to dispose of them later, do not store more than 100 batteries (from the main control boards) per sealed box. Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build-up.

Page 29

TAB INDEX FOR C223 / C228

OVERALL MACHINE INFORMATION

C228 OVERALL INFORMATION

LARGE CAPACITY TRAY C563

DETAILED SECTION DESCRIPTION

C228 DETAILED DESCRIPTIONS

PCRIP-10 PRIPORT CONTROLLER

INSTALLATION

C228 INSTALLATION

TAPE MARKER

Rev. 4/98

TAB POSITION 1

TAB POSITION 2TAB POSITION 3TAB POSITION 4

SERVICE TABLES AND PROCEDURES

C228 SERVICE TABLES

REPLACEMENT AND ADJUSTMENT

C228 REPLACEMENT AND ADJUSTMENT

TROUBLESHOOTING

C228 POINT TO POINT DIAGRAM

DOCUMENT FEEDER C562

TAPE MARKER C532

TAB POSITION 5TAB POSITION 6

DOCUMENT FEEDER C550

TAB POSITION 7

TAB POSITION 8

Page 30

Page 31

OVERALL MACHINE

INFORMATION

Page 32

Page 33

SPECIFICATIONS

1. SPECIFICATIONS

Configuration: Table-top Master Processing: Digital Printing Process: Fully automatic one-drum stencil system Original Type: Sheet/Book Original Size: Maximum 307 mm x 432 mm (12.0" x 17.0") Reduction Ratios: Inch version:

93%, 77%, 74%, 65% Metric version: 93%, 87%, 82%, 71%

Enlargement Rati os: Inch version:

155%, 129%, 121% Metric Version: 141%, 122%, 115%

Zoom: From 50% to 200% in 1% steps

Overall

Machine

Information

Directional Magnification: Vertical: From 50% to 200% in 1% steps

Horizontal: From 50% to 200% in 1% steps Image Mode: Line, Photo, Line/Photo Color Printing: Drum unit replacement system

(Red, Blue, Green, Brown, Yellow, Purple,

Navy, and Maroon) Master Feed/Eject: Roll master, automatic feed/eject Leading Edge Margin: 5 mm (0.2") Trailing Edge Margin: 3 mm (0.12") Printer Paper Size: Maximum 297 mm x 432 mm (11.6" x 17.0")

Minimum 90 mm x 148 mm (3.6" x 5.8") Printing Ar ea : A3 drum

When using A3 paper:

More than 290 mm x 410 mm, 11.4" x

16.1"

When using 8

" x 11" paper:

1/2

More than 290 mm x 415 mm, 11.4" x

16.3"

A4 drum

More than 290 mm x 204 mm, 11.4" x 8.0" Print Paper W ei g ht: 47.1 g/m2 to 209.3 g/m2 (12.5 lb to 55.6 lb) Printing Speed: 60, 75, 90, 105, 120 sheets/minute (5 steps) First Copy Time

(Master Process Time):

SM 1-1 C223

Less than 23.5 seconds (A3, 11" x 17")

Less than 19.0 seconds (A4, 8

" x 11")

1/2

Page 34

SPECIFICATIONS

Second Copy time (First Print Time):

Less than 26.5 seconds (A3, 11" x 17")

Less than 21.5 seconds (A4, 8

" x 11")

1/2

Paper Feed Table Capacity: 1,000 sheets (80g/m2, 20 lb) Paper Delivery Table

Capacity:

1,000 sheets (66. 3 g/m2, 17.6 lb)

1,000 sheets (80g/m2, 20 lb) Power Source: 120 V, 50/60 Hz, 3.6 A (for N. America)

220/240 V, 50/60 Hz, 2.0 A (for Eu rope, Asia) Power Consumpt i on : 120 V, 50/60 Hz, 400 W (f or N. Am e r i ca)

220/240 V, 50/60 H z, 40 0 W (f or Eu r op e, Asi a) Weight: 120 V version: 125 kg (275.5 lb)

220/240 V version: 125 kg (275.5 lb)

Cabinet: 23.5 kg (51.8 lb) Dimensions (W x D x H):

Width Depth Height

Stored 719 mm, 28.4" 698 mm, 27.5" 646 mm, 25.5" Stored with

document feeder Set up 719 mm, 28.4" 698 mm, 27.5" 644 mm, 25.4" Set up with cabinet 719 mm, 28.4" 698 mm, 27.5" 1,072 mm, 42.3" Set up with

document feeder Set up with cabinet

and document feeder

719 mm, 28.4" 698 mm, 27.5" 676 mm, 26.7"

1,331 mm, 52.5" 698 mm, 27.5" 666 mm, 26.3"

1,331 mm, 52.5" 698 mm, 27.5" 1,092 mm, 43.0"

Original Scanning Time: 2.5 ms/line Pixel Density: 400 dpi Master Eject Box Capacit y: More than 50 masters under low temperatur e

More than 60 masters at 23 °C, 73°F

More than 60 master s un de r high t emp er a tu r e Paper Separation: Friction roller/center separation system Feed Table Side Plate

88 mm to 336 mm (3.46" to 13.2") Movement:

Side Registration:

±10 mm Vertical Regi stration: More than +15 mm, –2 0 m m , + 0. 59 ", –0. 79 " Ink Supply: Automatic ink supply system Paper Delivery: Air knif e/vacuum delivery

C223 1-2 SM

Page 35

Rev. 2/97

SPECIFICATIONS

Print Counter: 7 digi ts Supplies: Master Thermal master 320 mm width

370 masters/roll (w i th A4 dr u m) 226 masters/roll (w i th A3 dr u m) (VT-II L master)

Max. run length 2000 pr ints

Ink 1000 cc ink pack (black)

600 cc ink pack (Red, Blue, Gree n, Br ow n , Ye l low , Purple, Navy, Maroon)

Optional Equipment Large Capacity Tray (LCT-4000)

Master Counter (6 digits)

Make Up Function, Type 40

Automatic Document Feeder, Type 20

Automatic Document Feeder, Type 50

Tape Marker, Type 20

PCRIP-10 Priport Controller

Overall

Machine

Information

SM 1-3 C223

Page 36

GUIDE TO COMPONENTS

2. GUIDE TO COMPONENTS

1. Platen Cover

Lower this cover over an original before printing.

2. Original Holder

A convenient place for holding originals while operating the machine.

3. Original Table Release Lever

Use to open the original table unit when installing the master.

4. Feed Roller Pressure Lever

Use to adjust the contact pressure of the paper feed roller according to paper thickness.

5. Separation Roller Pressure Levers

Use to adjust the separation roller pressure to prevent double feed.

6. Paper Feed Table

Set blank paper on this table for printing.

7. Paper Feed Side Plates

Use to prevent paper skew.

8. Side Plate Fine Adjustment Dial

Use to shift the paper feed table sideways

9. Paper Feed Table Down Key

Press to lower the paper feed table.

10. Front Door

Open for access to the inside of the machine.

C223 1-4 SM

Page 37

GUIDE TO COMPONENTS

1. Master Eject Unit Open Button

Press to remove misfed paper or a misfed master.

2. Master Cut Button

Press this button to cut the master paper leading edge after installing a new master roll.

3. Pressure Release Lever

Use to install the master roll.

8. Ink Holder

Set the ink cartridge in this holder.

9. Paper Delivery Table

Completed prints are delivered here.

10. Small Size Paper Delivery End Plate

Use to align the leading edges of

" x 11" or

prints that are A4, 8 smaller.

1/2

Overall

Machine

Information

4. Operation Panel

Operator controls and indicators are located here.

5. Drum Rotation Button

Press to return the drum to the home position.

6. Drum Unit Lock Lever

Lift to unlock and pull out the drum unit.

7. Drum Unit

The master is wrapped around this unit.

11. Paper Delivery End Plate

Use to align the leading edges of prints larger than A4, 8

12. Paper Delivery Side Plates

Use to align the prints on the paper delivery table.

13. Master Eject Container Cover

Open when removing the master eject box.

14. Main Switch

Use to turn the power on or off.

" x 11".

1/2

SM 1-5 C223

Page 38

MECHANICAL COMPONENT LAYOUT

3. MECHANICAL COMPONENT LAYOUT

25 24

123456

1820

141516

1. Drum Unit

2. Lens

3. CCD

4. Reverse Roller

5. Master Feed Roller

6. Platen Roller

7. Thermal Head

8. Master Roll

9. Master Making Unit

10. Upper Separation Roller

11. Paper Feed Roller

12. Paper Table

13. Separation Plate

14. Lower Separation Roller

15. 2nd Feed Roller

16. Doctor Roller

17. Press Roller

18. Ink Roller

19. Paper Exit Pawl

20. Transport Unit

21. Paper Delivery Table

22. Master Eject Box

23. 1st Eject Roller

24. 2nd Eject Roller

25. Master Eject Unit

26. Exposure Lamps

27. Original Exit Tray

C223 1-6 SM

Page 39

4. DRIVE LAYOUT

DRIVE LAYOUT

18 17

Overall

Machine

Information

4 5

15 14

1. Scanner Belt

2. Scanner Motor

3. Image Position Motor

4. Master Eject Motor

5. Drum Drive Gear

6. Drum Unit Gear

7. Drum Drive Pulley

8. Main Drive Belt

9. Transport Belt

10. Printing Pressure Pulley

11. Printing Pressure Gear

11 10

12. Idle Gear

13. Idle Pulley

14. Main Motor

15. Paper Table Drive Motor

16. Paper Feed Cam Gear

17. Master Feed Motor

18. Timing Belt

19. Platen Roller Gear

20. Master Transport R olle r Gea r

21. Reverse Roller Gear

SM 1-7 C223

Page 40

DRIVE LAYOUT

1. Scanner Unit Safety Switch

2. Paper Table Down Button

3. Paper End Sensor

4. Paper Width Sensors (4)

5. Paper Table Open Switch

6. Paper Length Sensor

7. Paper Table Safety Switch

8. Paper Table Height Sensor

9. Image Processing PCB

10. Transformer

11. Paper Table Lower Limit Sensor

12. Front Door Safety Switch

13. Printing Pressure Sensor

14. 1st Paper Exit Sensor

15. Vacuum Fan Motor

16. Power Supply Unit

17. 2nd Paper Exit Se nso r

18. Test Switch

19. Circuit Breaker

20. Delivery Table Open Switch

21. Main Switch

22. Air Knife Motor Safety Switch

23. Master Counter

24. Total Counter

25. Operation Pa ne l

26. Drum Rotati on LED

27. Drum Rotation Button

28. Drum Unit Safety Switch

29. Main Control PCB

C223 1-8 SM

Page 41

DRIVE LAYOUT

Overall

Machine

Information

30. Master Eject Unit Safety Switch

31. Ink Supply Solenoid

32. Master Press Sheet Sole no i d

33. 2nd Drum Positio n Se nso r

34. Noise Filter

35. 1st Drum Position Sensor

36. Printing Pressure Solenoid

37. Main Motor

38. Drum Rotati on Sen sor

39. Paper Feed Solenoid

40. Paper Table Drive Motor

41. Detection Pin Release Solenoid

42. AC Drive PCB

43. Ink Detection PCB

44. Master Cut Button

45. Image Positionin g Motor

46. Master Feed Clamper Solenoid

47. Drum Lock Soleno id

48. Master Eject Clamper Solenoid

49. Drum Master Se nso r

SM 1-9 C223

Page 42

DRIVE LAYOUT

50. Master Buckle Sensor

51. Master Feed Motor

52. Left Cutter Switch

53. Master Buckle Fan Motor

54. Pressure Plate Motor

55. Lower Pressure Plate Sensor

56. Upper Pressure Plate Sensor

57. Full Master Box Sensor

58. Master Eject Se nso r

C223 1-10 SM

59. Master Eject So len oi d

60. Air Knife Motor

61. Master Eject Box Switch

62. Master Eject Motor

63. Reverse Roller Clutch

64. Cutter Motor

65. Master End Senso r

66. Right Cutter Switch

67. Thermal Head

Page 43

DRIVE LAYOUT

Overall

Machine

Information

68. Scanner Hom e Po siti o n Se nso r

69. Xenon Lamps (2)

70. Scanner Motor

71. CCD PCB

72. Platen Cover Position Sensor

73. Xenon Lamp Stabilizer

74. A/D Conversion PCB

75. Original Sensor

76. ADF Set Switch

SM 1-11 C223

Page 44

ELECTRICAL COMPONENT DESCRIPTIONS

5. ELECTRICAL COMPONENT DESCRIPTIONS

P to P Location

N-16

E-4

K-16

E-10 M-13

L-16

M-13

E-13

INDEX

NAME FUNCTION

No.

Motors

15 Vacuum Fan Motor Provides suction to ensure that the

paper is held firmly on the transport belt.

37 Main Motor Drives paper feed, drum printing,

and paper delivery unit components.

40 Paper Table Drive Motor Raises and lowers the paper feed

table.

45 Image Positioning Motor Changing the relative timing of the

paper feed roller and the drum to

adjust the vertical image position. 51 Master Feed Motor Feeds the master to the drum. 53 Master Buckle Fan Motor Provides suction to ensure that the

master is stored in the master box

during the master eject operation. 54 Pressure Plate Motor Raises and lowers the pressure

plate in the master eject mechanism. 60 Air Knife Motor Drives the fans to separate the

leading edge of the paper from the

drum. 62 Master Eject Motor Sends the used master into the

master eject box. 64 Cutter Motor Drives the mechanism to cut the

master. 70 Scanner Motor Drives the 1st and 2nd scanners.

SERVICE PROGRAM

OUT-6

OUT-26 & 32

OUT-18 &19

OUT-24 & 25

OUT-34 OUT-40

OUT-4

OUT-7

OUT-3

OUT-22 & 23

OUT-37

1-14

L-18

K-16

L-16

M-16

L-16

Solenoids

31 Ink Supply Solenoid Releases the spring clutch to

activate the ink supply pump. 32 Master Press Sheet

Solenoid

Inserts the mylar sheet between the

press roller and the drum during a

quality start operation. 36 Printing Pressure

Solenoid

Engages the pressure on/off lever

when a paper misfeed occurs. 39 Paper Feed Solenoid Releases the sector gears to feed

the paper. 41 Detection Pin Release

Solenoid

Releases the detection pin arm to

apply printing pressure during a

quality start operation. 46 Master Feed Clamper

Solenoid

Opens the master clamper to

capture the leading edge of the

master during master feed. 47 Drum Lock Solenoid Prevents the drum unit from being

removed during a printing run, or

when the drum is not in the home

position.

OUT-12

OUT-38

OUT-14

OUT-15

OUT-13

C223 1-12 SM

Page 45

ELECTRICAL COMPONENT DESCRIPTIONS

P to P Location

M-16

E-6

J-16

J-16 J-16

E-4

E-5

N-16

F-3 L-16

J-14

F-5

K-14

M-14

I-16

M-14

E-3

INDEX

NAME FUNCTION

No.

Master Eject Clampe r

Solenoid

Opens the master clamper to eject

the master. 59 Master Eject Solenoid Presses the lower master eject roller

against the drum surface to capture

the used master

Switches

1 Scanner Unit Safety

Switch

Cuts off the power line of the main

and paper table drive motor when

the scanner unit is open.

2 Paper Table Down Button Instructs the CPU to turn on the

paper table drive motor to lower the

paper table.

5 Paper Table Open Switch Checks if the paper table is opened. 7 Paper Table Safety

Switch

Stops the lowering of the paper feed

table to prevent users from catching

their fingers under it, by cutting the

ac power. It is also closed when the

paper feed table is closed. 12 Front Door Safety Switch Informs the CPU when the front

door is open, and cuts off the power

line to the paper table drive motor. 18 Test Switch Disables the front door, paper table,

master eject unit, and scanner unit

safety switches. 20 Delivery Table Open

Checks if the delivery table is open.

Switch 21 Main Switch Turns the power on or off. 22 Air Knife Motor Safety

Switch

Cuts off the power line of the air knife motor when the master eject unit is open.

27 Drum Rotation Button Instructs the CPU to rotate the drum

at 10 rpm.

28 Drum Unit Safety Switch Checks if the drum unit is set

correctly.

30 Master Eject Unit Safety

Switch

Cuts off the power line when the master eject unit is open.

44 Master Cut Button Instructs the CPU to feed a short

strip of master paper and cut the master paper.

52 Left Cutter Switch Detects when the cutter is at the left

side (operation side).

61 Master Eject Box Switch Checks if the master eject box is set

properly.

66 Right Cutter Switch Detects when the cutter is at the

right side (non-operation side).

76 ADF Set Switch Detects if the optional document

feeder cover is closed.

SERVICE PROGRAM

OUT-16

OUT-17

IN-22

IN-19

IN-50

IN-38

IN-24

IN-33

IN-23

IN-47

Overall

Machine

Information

Sensors

K-16

3 Paper End Sensor Informs the CPU if there is paper on

IN-18

the paper table.

J-16

4 Paper Width Sensors (4) Informs the CPU of the printer paper

width.

IN-13 16

SM 1-13 C223

Page 46

ELECTRICAL COMPONENT DESCRIPTIONS

Rev. 2/97

P to P Location

K-16

K-14

J-16

H-14

H-16 H-16 L-13 K-13

J-14

H-16

L-13

J-16

J-16 L-13

D-3

E-3

INDEX

NAME FUNCTION

No.

6 Paper Length Sensor Informs the CPU of the printer paper

length.

8 Paper Table Height

Sensor 11 Paper Table Lower Limit

Sensor

Informs the CPU when the paper table is at the paper feed position.

Informs the CPU when the paper table is at the lowest position.

13 Printing Pressure Sensor Informs the CPU when printing

pressure is applied. Also, detects

paper misfeeds. 14 1st Paper Exit Sensor Detects paper misfeeds. 17 2nd Paper Exit Sensor Detects paper misfeeds. 33 2nd Drum Position Sensor Checks the position of the drum. 35 1st Drum Position Sensor Checks the position of the drum

(home position). 38 Drum Rotation Sensor Supplies timing pulses to the CPU

based on the rotation of the main

motor. 49 Drum Master Sensor Informs the CPU if there is a master

on the drum. 50 Master Buckle Sensor Informs the CPU when the master is

buckling. 55 Pressure Plate Lower

Position Sensor

Informs the CPU when the pressure

plate in the master eject mechanism

is at the lower limit position. 56 Pressure Plate Upper

Position Sensor

Informs the CPU when the pressure

plate in the master eject mechanism

is at the upper limit position. 57 Full Master Box Sensor Informs the CPU when the master

eject box is full of masters. 58 Master Eject Sensor Detects used master misfeeds. 65 Master End Sensor Informs the CPU when the master

roll in the master making unit has

run out.

Scanner Home Position

Sensor

72 Platen Cover Position

Sensor

Informs the CPU when the 1st

scanner is at home position.

Detects when the platen cover or

the optional document feeder is

opened more than 25 degrees

above the exposure glass. 75 Original Sensor Detects when an original is placed

on the exposure glass.

SERVICE PROGRAM

IN-17

IN-21

IN-20

IN-35

IN-41 IN-42 IN-37 IN-36

IN-44

IN-25

IN-32

IN-31

IN-34

IN-43 IN-26

IN-45

IN-46

IN-48

Printed Circuit Boards

A-6

9 Image Processing PCB Control the image processing

performance.

E-6

29 Main Control PCB Controls all machine functions both

directly and indirectly through other

boards.

E-5

42 AC Drive PCB Controls the ac components using

relays.

I-13

43 Ink Detection PCB Informs the CPU when ink is present

in the drum.

C223 1-14 SM

Page 47

ELECTRICAL COMPONENT DESCRIPTIONS

P to P Location

A-2

C-4

M-16

F-4 F-8

F-3 O-14 K-14

F-2

M-13 D-10 B-1 B-2

INDEX

NAME FUNCTION

No.

71 CCD PCB Converts the reflected light intensity

into an analog signal.

74 A/D Conversion PCB Converts the CCD analog signal into

a digital signal.

Counters

23 Master Counter Keeps track of the total number of

masters made. 24 Total Counter Keeps track of the total number of

prints made.

Others

10 Transformer Steps down the wall voltage. 16 Power Supply Unit Provides power for all dc

components. 19 Circuit Breaker Cuts the ac line off. 25 Operation Panel Interfaces the CPU and the operator. 26 Drum Rotation LED Lights the LED green when the

drums stops at the home position.

Lights the LED red when the drum

is not in the home position 34 Noise Filter Filters out electrical noise from the

ac power input line. 63 Reverse Roller Clutch Transfers drive to the reverse roller. 67 Thermal Head Creates the master using heat. 69 Xenon Lamps (2) Illuminates the original. 73 Xenon Lamp Stabilizer Stabilizes the power supplied to the

xenon lamps.

SERVICE PROGRAM

OUT-9

OUT-10

OUT-5

OUT-21

Overall

Machine

Information

SM 1-15 C223

Page 48

PRINTING PROCESS

6. PRINTING PROCESS

Rev. 2/97

Master Ejection

Paper Delivery

1. Master Ejection/ Scanning/ Master Making:

Scanning

Shown with optional ADF attached

Master Making/ Master Feed

Paper Feed

Printing

At the start of the master making cycle, the machine will eject the used master that is wrapped around the drum into the master eject box.

At the same time, the machine will scan the original on the expo sur e glass ( r ef l ect ed lig ht to the CCD via the mirrors and the lens. The scanned image is transferred onto the master using a thermal head.

While the old maste r is be i ng eject ed , th e ne w master is stored in a box.

2. Master Feed: After the old master has been ejected , th e ne w master is fed to the drum and wrapped around it. At the same time, the new master is cut.

3. Paper Feed: Ind i vi du al she et s of pa pe r are fed to the drum.

4. Printing: The paper fed from th e pa pe r fee d m ech an is m is pressed against the surface of the drum. This will transfer the ink onto the printer paper through the drum scr een and the master.

5. Paper Deliver y: Th e exi t paw l an d ai r knife are used to peel the printed paper off the drum, and eject the paper onto the paper delivery table.

C223 1-16 SM

Page 49

Rev. 7/97

MAJOR DIFFERENCES BETWEEN THE VT3600 AND THE VT3800

7. MAJOR DIFFERENCES BETWEEN THE

VT3600 AND THE VT3800

The VT3800 was developed ba sed on the VT3 60 0. The following table lists the major differences between the VT3800 and the

VT3600.

No. Item Remarks

1 Exposure Lamp The exposure lamp has been changed from a fluorescent

lamp to two xenon lamps.

2 Master Buckle

Mechanism

3 Quality Start A quality start mechanism has been added to minimize

4 Platen Roller Holding

Method

5 Leading Edge Margin The leading edge margin has been reduced from 8 mm to 5

6 Separation Roller

Shaft

7 Noise Reduction

Cover

8 Paper Size Sensors The paper size detection board has been eliminated. The

9 Optional Equipment Large Capacity Tray LT4000

10 Line/Photo Mode To allow clear prints of originals having line and photo areas,

11 Economy Mode If "Economy" mode is selected on the operation panel, a

12 CS Mode Customers can register three of seven frequently used user

13 Scanner Lock Lever To facilitate operation, the shape of the scanner lock lever

The master process time has been reduced as a result of the new master buckle mechanism. The master making process will start at the same time as the master eject operation.

wasted prints after a long idle interval. To ensure the correct platen roller positioning, the platen

roller is held by two screws instead of two levers.

mm. The drum screens and printing pressure cam have been changed.

The diameter of the separation roller shaft has been increased. Due to this modification, the paper feed vibration noise has been reduced.

The noise reduction cover has been added to reduce paper feed noise.

paper size sensors send the signals directly to the main control board.

ADF (50 Sheets)

Line/Photo mode has been added. Photo mode is processed using Error Diffusion, which is similar to the CAPIX method used in the VT3600.

lower thermal head energy is applied when a master is made. As a result, the image will be lighter than normal and ink consumption will be reduced.

SP modes in the CS mode. The setting can be recalled using the new CS mode key.

has been changed.

Overall

Machine

Information

14 Paper Return

Mechanism

15 Cassette Size

Detection

16 Paper Feed Motor The paper feed motor has been changed from an ac motor

SM 1-17 C223

The paper return mechanism (a solenoid and a dc motor) has been eliminated.

The cassette size detection board (reed switch) has been eliminated.

to a dc motor.

Page 50

MAJOR DIFFERENCES BETWEEN THE VT3600 AND THE VT3800

No. Item Remarks

17 Original Tray Cover To prevent the originals from dropping when the ADF is

opened, a cover has been added on the original tray.

18 Base Pads The shape of the base pads has been changed so that they

can be used for both the normal table and the table for the LCT (Large Capacity Tray).

C223 1-18 SM

Page 51

DETAILED SECTION

DESCRIPTIONS

Page 52

Page 53

MASTER EJECT

1. MASTER EJECT

1.1 OVERALL

At the end of the printing cycle, the used master will remain wrapped around the drum to prevent th e ink on the drum surface from drying. When the Master Making key is pressed to make a new master, the used master will then be ejected fr om the drum.

The master is pulled off the drum, and is fed through the eject rollers and into the master eject box. A pressure plate will then compact the used master.

[D]

[G]

[C]

[A]

[F]

Drum

[E]

[B]

•

The drum [B] rotates in reverse (opposite to the printing direction).

•

The master eject rollers [A] rotate.

•

The lower eject roller [C] is moved forward and is pressed against the surface of the drum.

•

The curled trailing edge of the used master is captured, and will pass between the uppe r [E] and lower [F] eject rollers. The master [D] is peeled off the drum and will be dumped into the master eject box [G].

Detailed

Section

Descriptions

[H]

•

The pressure plate [H] will compact the ejected master [I].

[I]

SM 2-1 C223

Page 54

MASTER EJECT

1.2 MASTER EJECT ROLLER ROTATION MECHANISM

Rev. 7/97

[I]

[J]

[H]

[G]

[A]

[B]

[E]

[F]

[B]

[C]

[D]

[E]

[F]

When an origina l is i n pla c e an d th e M ast er Maki n g key is pressed, the main motor will start turning at 22 rpm in the reverse direction. As a result, the drum will also turn in reverse direction (compared with the rotation direction during printing).

At this moment, if the drum master sensor detects that there is a master on the drum, the master eject motor [A] starts rot ating. Drive is transmitted to gear [E] and to the up pe r fi rs t eject rollers [G] thr o ug h th e ti mi n g be l t [B ] an d gears [C] and [D]. Gear [F] will drive the lower first eject rollers [H]. The belts [I] will transmit the drive from the first eject rollers to the upper and lower second eject rollers [J].

(If the drum master sensor had detected that no master was wrapped around the drum when the Master Making key is pressed, the machine will skip the master eject process and will go directly to the master making process.)

After the master eject process is completed, the drum will return to its home position. The master eject rollers then stop rotating.

There are five rollers on each eject roller shaft. (only four illustrated)

C223 2-2 SM

Page 55

MASTER EJECT

1.3 MASTER EJECT ROLLER DRIVE MECHANISM

[H]

[G]

[A]

[E]

[F]

[B]

[D]

[C]

Detailed

Section

Descriptions

The drum position is dete cte d by th e fir st [G] and second [H] drum positio n sensors. When the drum reaches its home position, the first drum position sensor [G] is actuated by the interrupter [F] located on the rear side of the drum.

To eject the master, the drum will turn in reverse direction (opposite to the printing direction). When the dr um is 70° past the 1st drum position sensor, the master eject solenoid [A] is energized and the supporter [C] on the upper eject roller shaft [D] will pivot away from the drum. This will force the lower first eject roller, [E] to be pressed against the surface of the drum.

The drum will momentarily stop rotating for 150 milliseconds when the trailing edge of the master is about 5mm from the master eject rollers to ensure the capture of the used master

As the drum rotates, the curled trailing edge of the master [B] will pass between the upper and lower first eject rollers. The first eject rollers will then peel the used master off the drum.

SM 2-3 C223

Page 56

MASTER EJECT

[A]

[B]

[C]

[D]

When the drum is 109 degree past the 1st drum position sensor, the master eject solenoid [A] is turned off, moving the lower first eject rollers [C] away from the drum .

Shortly after the leading edge of the ejected master has passed between the upper and lower first eject rollers, the master eject sensor [B] is activated. The used master will then be dumped into the master eject box [D].

C223 2-4 SM

Page 57

MASTER EJECT

Print key on

First Drum Position Sensor

Master Eject Solenoid

Sensor ON Check

70°

Drum Rotation

Reverse Reverse

Master Eject Sensor

Master Eject Motor

Misfeed Indicator Lights

39° 18°

50° 50°

68°

Forward

[Master Eject Misfeed Detection]

The misfeed indicator for the master eject section will blink during the following conditions:

1: The master eject sensor is not activated and the drum has rotated

an additional 50 degrees (still in reverse direction and after the de-activation of the master eject solenoid). The machine will know that the eject rollers have failed to capture the master. The drum will return 68 degrees (in the printing direction) to repeat the master eject process again. The master eject solenoid will again be energized while the drum rotates another 18 degrees to try to capture the trailing edge of the master.

Detailed

Section

Descriptions

If the master eject sensor again fails to detect the master, the drum will return to its home position and the misfeed indicator will blink.

2: The drum finishes its rotation for the mast er ej e cti n g pro cess an d

returns to the home position, but the master eject sensor does not turn off. This means that the master is still positioned between the master eject rollers, the misfeed indicator will blink.

SM 2-5 C223

Page 58

MASTER EJECT

1.4 MASTER EJECT CLAMPER MECHANISM

[G]

[F]

[B]

[A]

[E]

[C]

[D]

When the drum has rotated 306° (in the revers e dir e cti o n) pa st th e 1st dr um position sensor, the master eject clamper solenoid [A] will energize and lever [B] will move counterclockwise a short distance as shown. This will move the cam [D] inwards towards the drum. The drum rotation will bring the clamper sector gear [E] against the cam [D]. Gear [F] will turn counterclockwise as it engages the clamper sect or ge ar , thu s ope nin g th e mast er cl amp er [G ]. This will release the leading edge of the master from the drum.

The drum will continue rotating until the interrupter at the rear of the drum has traveled 13 degrees past the first drum position sensor. Then, the main motor will turn off. A half a second later, the master eject clamper solenoid [A] will turn off and the spring [C] will pull the cam [D] back to its initial position. The drum will then rotate forward to its home position.

C223 2-6 SM

Page 59

1.5 PRESSURE PLATE UP/DOWN MECHANISM

[B]

[M]

[C]

[L]

[D]

[K]

[E]

[F]

[G]

MASTER EJECT

[A]

Detailed

Section

Descriptions

[I]

[H]

[J]

Pressure Plate Down

When the interrupter located at the rear of the drum interrupts the first drum position sensor (this will occur at the completion of the master eject process), the pressure plate motor [B] will rotate. This will drive the gear [H] clockwise by means of gears [C], [D], [E], and [F].

Pin [I] on gear [H] will move the link [G] downward until the link interrupter [L] interrupts the lower pressure plate sensor [J]. The spring [M] will pull down on the pressure plat e an d the ejected master in th e m ast er ej e ct bo x is compressed by the pressure plate [A].

If the master box ful l sen s or [K ] do es no t tu r n on when the pressure plate travels downward, this will indicate that the master eject box is filled with ejected masters. In this case, the master eject box full indicator will blink, and the machine will stop after a new master is wrapped around the drum.

The indicator will go off after the master eject box switch has been turned off and on. Then the master box full sensor will be checked again after one master has been fed. This is to prevent the indicator from being reset without removing the ejected masters from the box. When the indicator is blinking, the Master Making key will not work, but the Print Start key and Proof key will operate correctly and the master that is currently wrapped around the drum can be used for printing.

SM 2-7 C223

Page 60

MASTER EJECT

[G]

[A]

[B]

[C]

[F]

[D]

[E]

Pressure Plate Up

After the new master has been wrapped around the drum in the master making process, the master cutter will leave the home position to cut the master, the pressure plate motor [B] will start rotating to raise the pressure plate.

When the pressure plate motor [B] rotates, the gear [C] is driven through the relay gears. The pin [F] on the gear inserted into the link [D] will rise and lift the left end of the link, thus raising the pressure plate.

The gear [C] will continue to turn until the interrupter [G] at the front end of the pressure plate blocks the upper pressure plate sensor [A]. At this time, the master eject motor [B] will stop and the pressure plate is held in the upper position.

Pressure Plate Motor Lock Detection

To prevent the pressure plate motor from locking, the error code, "E-12" will light on the operation display panel under the following conditions:

1. When the lower pressure plate sensor [E] is not activated within 8

seconds after the pressure plate motor starts to lower the pressure plate.

2. When the upper pressure plate se nsor [A] is not activated within 4

seconds after the pressure plate motor starts to raise the pressure plate.

C223 2-8 SM

Page 61

1.6 ELECTRICAL TIMING

First Drum Position Sensor Second Drum Position Sensor

MASTER EJECT

Main Motor Reversing

Main Motor Forwarding

Master Eject Motor Master Eject Solenoid Master Eject Clamper Solenoid

22 rpm

306°

T1: When the Master Making key is

pressed, the main motor and master eject motor will start turning. At the same time, the paper table drive motor will start turning to lift the paper table up war d to th e paper feed positio n.

T2: When the drum rotates X1 degrees

past the first drum po si ti o n sen sor actuation position (drum home position), the mast er eject solenoid is energized. This will press the lower eject rollers against the surface of the drum. The master eject solenoid is de-energized when the drum rotates an additional X2 degr e es.

The drum rotation angles X1 and X2 are depended on the drum type. There are two types of drums: the A3/DLT drum (standard), and the A4/LT drum (optional). X1 and X2 degrees for each drum are as follows

13°

30 rpm

500 ms

70°

39°

0°

Detailed

Section

Descriptions

Drum Type A3/DLT A 4/ LT X1 (degree) 70 174 X2 (degree) 39 55

SM 2-9 C223

Page 62

MASTER EJECT

T3: When the drum has rotated 306

degrees past the hom e po siti o n, the master eject clam p er sole noid is energized.

0°

T4: When the drum has rotated 13

degrees past the dru m hom e position, the drum will stop.

The drum will stop for 500 milliseconds and the master eject clamper solenoid will be de-energized. The drum will then rotate in the opposite direction to return the drum to the home position. The master eje ct pr o cess is completed.

After the master eject cycle, the machine will start feeding the new master and the drum will rotate in the print direction to begin the master making process.

13°

306°

0°

C223 2-10 SM

Page 63

SCANNER

2. SCANNER

2.1 OVERALL

There are two modes for scanning originals.

Platen Cover Mode:

scanner motor moves the scanner under the expo sure glass to scan th e original.

ADF Mode:

fed onto the exposure glass. The scanner will then move 22 mm away from the CCD and will then remain stationary as it scans the moving original. The scanner is returned to the home position when the scanning is completed.

When an optional Document Feeder is installed, the original is

[I]

The original is placed on the exposure glass, and the

Detailed

Section

Descriptions

[G]

[F]

[E]

The light from the xenon lamps [A] are reflected from the original by the first [B], second [F], and third [E] mirrors through the lens [D] to the CCD [C].

In the Platen cover mode, the CCD will measure the reflected light of the white plate [G] on the back side of the original scale [I] each time before scanning the document to obtain the standard white level. The standard white level is used to correct distortion such as bright or dull spots in the light path (lamp, reflectors., exposure glass, mirrors, lens and CCD). The scanner is the home position when it measures the white level

[A]

[C]

[B]

[D]

In the ADF mode, as the scanner will move 22 mm, the CCD will then measure the white level off the white plate installed on the ADF Unit.

SM 2-11 C223

Page 64

SCANNER

[A]

[B]

[C]

[Lens]

The lens assembly [B] consists of 6 lenses to transfer the image to the photoelectric elements of the CCD. It is possible to adjust the focus by moving the lens assembly.

[Shading Plate]

Compared with the ends, the middle of the lamp is too bright. To correct this, a shading plate [A] is placed in front of the lens. The shading plate will block some of the light in the center to distribute it more uniformly, across the CCD.

[CCD (Charge Coupled Device)]

The CCD [C] is a solid-state device similar to a photodiode array, but unlike a photodiode array, a CCD can read one complete scan line at a time. The CCD produces an analog signal which is converted into a digital signal in the A/D conversion PCB.

C223 2-12 SM

Page 65

2.2 SCANNER MECHANISM

[C]

[B]

[D]

SCANNER

Front Side

[E]

[F]

Detailed

Section

Descriptions

Rear Side

[A]

[G]

The scanner motor [A] (a stepper motor) is used to drive the scanners. The first scanner [B], which consists of the exposure lamps and the first mirror, is driven by the first scann er belt [F]. The second scanner [C], which consists of the second and third mirrors, is driven by the second sca nner belt [D]. Both scanners move along the guide rails.

The timing belt [G] moves the second scanner at half the speed of the first scanner. This is to maintain the focal distance between the original and the lens during scanni ng .

The scanner home position is detected by the scanner home position sensor [E]. In the Platen Cover Mode, the scanner will scan the original on the exposure glass, then will return until the scanner home position sensor is activated. In the ADF Mode, the scanner will move 22 mm backwards (away from the CCD), to scan the original which is fed by the ADF. When the master making process is fin i she d and th e AD F mot or ha s stop pe d, the scanner will return to the home position.

SM 2-13 C223

Page 66

SCANNER

2.3 PLATEN COVER POSITION DETECTION

[B]

[A]

When the platen cover is opened about 25 degrees, the Pl aten Cover Position Sensor [A] is deactivated. When this sensor is deactivated, the Original Sensor [B] is able to detect the original on the exposure glass.

When the Platen Cover Position Sensor is deactivated and the Original Sensor will detect that there is no original on the exposure glass, the machine will indicate the message "SET THE ORIGINALS" on the operation display. This will prevent wasting a blank master that would occur when the Master Making key was pres sed without an original being pla ced on the exposure glass.

When the origin al i s pl ace d on the expo sur e gl ass an d th e M ast er M akin g key is pressed with the platen cover opened more than 25 degrees ( the Platen Cover Position Sensor is deactivated), the shadow (margin) erase function is enabled.

The margin erase function will erase the shadows around the original. This function is useful when printing from a thick book or similar originals. The margin erase function is also enabled when the margin erase key is pressed. When the key is pressed, the machine will erase the margin that is shown on the operation display regardless of how much the platen cover is opened.

C223 2-14 SM

Page 67

SCANNER

Notes regarding the shadow erase function

•

Margins of 1 mm [0.02"] on all four sides of the original will be erased. The width of the margins will change depending on the reproduction ratios.

•

Shadows near the ed ge of a book might not be erased completely.

•

If the shape of the ori g i na l is as sho w n be low , shad ow s m igh t appear on the prints. In this case, make the master with the platen cover closed.

Shadow

Scanning direction

•

If there is a line or solid image on the margin at the center or at the edges being erased, part s of th e i m ag e m igh t be er ase d as sho w n be l ow.

Detailed

Section

Descriptions

Scanning directi o n

SM 2-15 C223

Page 68

SCANNER

2.4 ELECTRICAL TIMING

2.4.1 Platen Mode

C223 2-16 SM

Page 69

SCANNER

Master Feed Lengths

a: 18.7 mm b: 0.7 mm c: 10.7 mm d: 13.7 mm e: 420 mm f: 62.5 mm (211 mm: A4/LT drum) g: 40 mm (61 mm: A4/LT drum)

The machine will scan and plot (burn) the new master during the master eject cycle. The new master will be stored until the completion of the master eject cycle.

T1: When the master making key is depressed, the main motor will rotate in

the reverse direction at 22 rpm. At the same time, the master feed motor and the reverse roller clutch will turn on to feed the leading edge of the master 18.7mm, then both the master feed motor and the reverse clutch will turn off. The scanner motor will turn on moving the scanner unit in the forward direction.

Detailed

Section

Descriptions

T2: After the scanner un it ha s moved 20 m m pass th e ho me po si tio n, the

master feed motor , th e m ast er bu ckle fa n m ot or an d th e r eve r se r oll e r clutch will turn on

T3: The scanning process and the master making process will begin

simultaneously after the master has been advanced 1mm. The new master will be stored until the used master has been ejected from the drum.

T4: After the scanner has traveled the length of the paper on the paper table

(maximum length 420 mm), the scanner motor will rotate in the reverse direction to return the scanner back to the home position.

T5: After the scanner home position sensor is actuated, the scanner motor

will rotate in the forward direction then the reverse direction to ensure that the scanner uni t ha d sto pp ed at th e cor r e ct ho m e po siti o n.

SM 2-17 C223

Page 70

SCANNER

2.4.2 ADF Mode (Type 50)

Rev. 7/97

The timing chart above shows the scanner timing when an optional ADF is used.

T1: When the originals are inserted in the ADF unit, the original set sensor is

activated.

T2: When the Master Making key is pressed, the ADF motor will rotate in the

forward direction to drive the pickup roller and the feed roller to feed the top original into the ADF.

T3: The ADF motor will stop rotating when the original has been fed 14.5

millimeters after the original registration sensor was activated. After a 50 milliseconds delay, the ADF motor will start rotating in the reverse direction to drive the 1st original transport roller.

T4: The ADF motor will stop again when the original has been fed 22

millimeters after the scan line sensor was activated.

Scan Line Sensor On

Original

ADF Scanning Position

T5: When the ADF motor stops, the scanner motor will rotate in the reverse

direction to move the scanner unit to the ADF scanning position.

C223 2-18 SM

Page 71

3. MASTER FEED

3.1 OVERALL

[D]

[A]

MASTER FEED

[B]

Detailed

Section

Descriptions

[C]

The thermal head [B] will burn the image (scanned by the CCD) onto the master [A] which will be later be wrapped around the drum [C]. At the same time that the used master is being ejected, the new master will be printed and stored in the master box [D]. After the old master has been completely ejected, the new master will then be clamped to and wrapped around the drum.

The master box mechanism will reduce the amount of time that is needed to make a new master, because the new master can be made at the same time that the old one is ejected.

SM 2-19 C223

Page 72

MASTER FEED

3.2 MASTER FEED CLAMPER OPENING MECHANISM

[A]

[B]

[C]

[G]

[F]

[H]

[D]

[E]

After the master eject process is complete d an d th e i nt er ru pter [A] is positioned in the first drum position sensor [B], the main motor will turn on and the drum starts rotating (22 rpm) in reverse direction (opposite to the printing direction).

When the drum has ro ta te d 16 0 de gr e es pa st th e actuation position of the second drum position sensor [C], the master feed clamper solenoid [D] will energize, and the cam [H] will move inside the drum.

When the drum has rotated an additional 58.5 degrees, the sect or gear [F] will rotate upwards as it contacts the cam [H]. This will engage the sector gear with the gear [E], which will turn counterclockwise to open the clamper [G]. At the same time, the drum will stop and the clamper will remain open to capture and clamp the leading edge of the new master.

C223 2-20 SM

Page 73

Rev. 7/97

3.3 MASTER FEED MECHANISM

[B]

[C]

[E]

[D]

[A]

MASTER FEED

Detailed

Section

Descriptions

To minimize the first print time, the master making process will start just after the master making key is pressed.

When the master making key is pressed, the drum will start rotating in reverse directi on to eject the used master that is wrapped around th e dr u m . At the same time, the master feed motor [A] will start turning and the reverse roller clutch [B] is energized.

When the master has been transported 18.7 mm, the master feed roller and the reverse roller clutch will stop. They will start again just after the scanning process of the original is initiated.

When the master has been transported an additional 10.7 mm (when the leading edge is 6 mm past the reverse roller [C]), the reverse roller clutch is turned off but the master feed motor will continue to rotate. As a result, the leading edge of the master will stay at 6 mm past the reverse roller, and the master will buckle upward behind the reverse roller. Until the drum is in to the master feed position, the new master will be fed by the master feed motor and stored in the master box [D]. The suction provided by the master buckle fan motor [E], will assist to bring the master into the box.

SM 2-21 C223

Page 74

MASTER FEED

Rev. 7/97

The main results of this mechanism are:

•

A much greater length of new master can be made before it starts to be wrapped aroun d th e dr u m .

•

The new master can be made much earlier during the machine’s operation cycle, reducing the time of the first print.

The master buckle fan motor will turn on when master making is initiated, and will remain on until the reverse roller rotates again to feed the master to the master clamp on the drum.

C223 2-22 SM

Page 75

MASTER FEED

3.4 MASTER WRAPPING MECHANISM

[A]

[C]

[B]

[E]

[B]

[D]

Detailed

Section

Descriptions

[C]

[D]

When the drum stops at the master feed position (at this time, the master clamper is open), the reverse roller clutch [A] will turn on again. When the master has been transported 18.7 mm and the master leading edge has reached the master clamper, the reverse roller clutch an d the master feed clamper solenoid will turn off. The leading edge of the master is clamped by the master clamper.

After the master clam p er cat c he s the leading edge of the master , th e dr u m will rotate at 22 rpm while the master buckle sensor [B] is on. The master feed motor will continue to feed the master at this stage. The drum will pull the master faster than the master feed motor feeds it, so that the master buckle sensor will eventually deactivate . When this occurs, the main motor will stop until the sensor is activated by a buckle in the master again. The master is wrappe d around the drum while kee pi n g a bu ckl e be twe en t he reverse roller [C] and the master feed roller [D]. The buckle will prevent the master that is still located under the thermal head from being pulled; if a long master is being made, this will adversely affect copy quality.

When the new master making process is completed, the master feed speed will increase (to 4 times the master making speed) and the master cutter will cut the master when the ap pro pr ia te le ng th of mast er ha s been tra nsp or t ed .

SM 2-23 C223

Page 76

MASTER FEED

Even if a master eject jam occurs, the master making operation will continue. When a master eject jam is detected, the machine will stop after master making and cutting is completed (during this period, the new master is stored in the master box [E]). When the reset key is pressed after the jammed master is removed, the reverse roller clutch will turn on to transport the new master to the master clamper. The master clamper will then clamp onto the leading edge of the master. The drum will rotate at 22 rpm in the print direction to wrap the master aro und the surface of the drum.

C223 2-24 SM

Page 77

3.5 CUTTER MECHANISM

[A]

MASTER FEED

[E]

[C]

[D]

[A]

[B]

[F]

[G]

After the master making process is completed, the master feed motor will turn off and the cutter motor [A] will start turning.

The cutter motor [A] will start turning in the reverse direction (see the arrows) when the cutter holder [B] is pressed again st the left cutter switch at the front end (operation side) of the cutter rail; (this is the cutter holder home position). This will drive the cutter holder [B] toward the rear (non-operation side) by means of the gear/pulley [C] and the wire [D] on which the cutter holder [B] is fixed. The master will be cut.

Detailed

Section

Descriptions

When the cutter holder reac hes the rear end of the cutter rail and is pressed against the right cutter switch, the cutter motor [A] will change its rotation direction, and the cutter holder [B] will move toward the front. The cutter motor [A] will stop turning when the cutter holder [B] is back at its home position (pressed agai n st th e l ef t cut te r swit ch) . The m ast er cutting process is now finished.

While the cutter holder [B] is traveling towards the rear of the machine, the roller [E] in the cutter holder is turning clockwise because it touches the cutter rail. The roller [E] will rotate the cutter blade [F] as indicated by the arrow. The master is between the blade and blade plate [G] and as the cutter moves rearward, it will cut the master. The blade plate also serves as a lower guide plate for the master.

After the master cutting process is completed, the master is fed an additional 40 millimeters and the master feed process is completed.

SM 2-25 C223

Page 78

MASTER FEED

3.6 ELECTRICAL TIMING

C223 2-26 SM

Page 79

Rev. 2/97

MASTER FEED

Master Feed Lengths

a: 18.7 mm b: 0.7 mm c: 10.7 mm d: 13.7 mm e: 420 mm f: 60 mm (211 mm: A4/LT drum) g: 40 mm (61 mm: A4/LT drum)

– Master Feed –

T1: When the master making key is depressed, the main motor will rotate in

the reverse direction at 22 rpm. At the same time, the master feed motor and the reverse roller clutch will turn on to feed the leading edge of the master 18.7 mm, then bo th the ma ste r fee d mot or an d th e reve r se cl ut ch will turn off. The scanner motor will turn on moving the scanner unit in the forward direction.

T2: After the scanner un it ha s moved 20 m m pass th e ho me po si tio n, the

master feed motor , th e m ast er bu ckle fa n m ot or an d th e r eve r se r oll e r clutch will turn on.

Detailed

Section

Descriptions

T3: The scanning process and the master making process will begin

simultaneously afte r the maste r has been adva nce d 1 mm . The new master will be stored until the used master has been ejected from the drum.

T4: After the scanner has traveled the length of the paper placed on the

paper table (maximum length 420mm), the scanner motor will rotate in the reverse direction to return the scanner back to the home position.

T5: After the scanner home position sensor is actuated, the scanner motor

will rotate in the forward direction then the reverse direction to ensure that the scanner uni t ha d sto pp ed at th e cor r e ct ho m e po siti o n.

– Master Wrapping –

T6: After the master eject process is completed, the main motor will rotate in

reverse direction at 22 rpm. The main motor will stop when the drum has rotated 220 degrees.

T7: When the drum has rotated 160 degrees past the 2nd drum position

sensor, the master feed clamper solenoid will energize.

T8: When the drum stopped at the master feed posi tion, the master buc kle

fan motor will turn off. At the same time the reverse roller clutch is de-energized. When the master has been transported 13.7 mm, the reverse roller clutch and the master feed clamper solenoid are turned off.

T9: When the master has been clamped, the main motor will start rotating in

print direction to wrap the master around the surface of the drum. The motor will rotate at 22 rpm only when the master buckle sensor is activated.

SM 2-27 C223

Page 80

4. PAPER FEED

4.1 OVERALL

PAPER FEED

[A]

[B]

[F]

[C]

[D]

[E]

This mechanism uses a center separation system, which consists of the separation plate [F], upper separation roller [B], and lower separation roller [E]. If a few sheet s of pa pe r ar e picke d up from the paper stack (on t he paper table) by the paper feed roller [A], only one sheet of paper is transported to the second upper feed roller [C] and second lower feed roller [D].

SM 2-28 C223

Page 81

PAPER FEED

4.2 PAPER TABLE UP/DOWN MECHANISM

The paper table is raised and lowered by the paper table drive motor. The paper end sensor [E] (a ref lective photosensor) is actuated when the

paper is placed on the paper table. When the Print Start key is pressed, the paper table drive motor [H] will start rotating in the clockwise direction and the worm gear [G] will turn. The gear [F] will turn clockwise and both gears [F] and [D] will turn to raise the racks [C].

As the paper table rises, the paper will push against the paper feed roller [I]. This raises the lever [J] which is mounted on the paper feed bracket. This will activate the paper table height sensor [K] (the phototransistor detects the light from the photocoupler, which up to now blocked by the lever), and will cause the paper table motor [H] to turn off stopping the raising of the paper table.

As printing proceeds and the level of paper on the table decreases, the lever [J] will block the light path in the photocoupler and the motor [H] will rotate clockwise until the phototransistor is reactivated. As a result, the top of the paper stack is constantly kept at the correct height.

Detailed

Section

Descriptions

When no paper is present, the paper end sensor [E] is not activated and the motor [H] will turn counterclockwise to lower the paper table. The paper table is lowered until the actuator [A] (fixed to the front rack) interrupts the lower limit sensor [B].

When a misfeed occurs or printing is finished, the paper table motor [H] will rotate counterclockwise for 500 milliseconds, to slightly lower the paper table.

C223 2-29 SM

Page 82

Rev. 7/97

PAPER FEED

[B]

[D]

[A]

[C]

[D]

[F]

[E]

[G]

[H]

[I]

[J]

[K]

SM 2-30 C223

Page 83

PAPER FEED

4.3 FEED ROLLER PRESSURE MECHANISM

[A]

[B]

Detailed

Section

Descriptions

[C]

[D]

The weight of the feed roller assembly [C], will press the paper feed roller onto the paper that is stacked on the paper table. This is because the feed roller assembly rotates freely around its shaft [D].

The spring [A] applie s tens ion to th e fe ed roll er asse m bly i n th e dir e ctio n i n which the paper feed roller is pulled up. When the feed pressure lever [B] is moved up, the spring [A] is st retched. Thus, the tension of the spring is increased, weakening the feed roller pressure.

Originally, the feed pressure lever is in the up position (standard paper). When thick paper (1 32 .5 to 21 5 g/m2, or 35.2 to 57 lb) is used an d fr e qu en tly the paper is not fed correctly, push the feed pressure lever down. The feed roller pressure will increase.

C223 2-31 SM

Page 84

4.4 PAPER SEPARATION MECHANISM

[A]

[B]

[D]

[C]

[E]

[G]

[F]

[C]

PAPER FEED

[A]

[D]

Pressure from spring [F] holds the separation plate [G] against the upper separation roller. A rubber pad located on the top of the separation plate allows only a few sheets of paper to reach the lower separation roller. If too many sheets of paper are fed to the lower separation roller at the same time, the lower separation roller may not be able to separate the sheets; it can separate only tw o or th r ee shee ts of paper.

Springs pull lever [A] push up the lower separation roller [E] upward. This roller presses the sheets to be fed against the upper separation roller [B]. The lower separat ion ro l ler do es no t tu r n i n th e pa pe r fee din g di r e ction. (It turns in the opposite dire cti o n du e to the one -w ay clutch bearings [D] located on both right and left separation levers [A].) When two or more sheets of paper are fed, brake force is applied to the lower sheets of paper by the friction between the paper and the lower separation roller. Then, the sheets are separated and only a single sheet of paper is fed to the second feed rollers.

The pressure between the upper and lower separation rollers can be adjusted by changing the right and left separation pressure adjusting levers [C] as follows (this is a user - leve l adju stme nt):

Levers Up: Separation pressure decreases. Levers Down: Standard position.

When dog-eared or wrinkled prints are delivered, the separation pressure should be decreased.

SM 2-32 C223

Page 85

PAPER FEED

Fig. 2

View from

"E"

[F]

"E"

Fig. 1

[C]

[A]

[D]

[C]

[A]

[B]

Detailed

Section

Descriptions

[G]

The lower separation roller [C] will turn slightly (see the arrow in Fig. 2) due to the one-way clutch be arings when paper passes through the roller. The lower separation roller [C] and its shaft [D] are slightly pushed downward by the paper [B] when the upper separation roller [A] is feeding the paper (Fig.1). Just when the paper is fed out from the rollers, the lower separation roller [C] and its shaft [D] will spring back against roller [A] (Fig. 2). This will rotate the lower separation roller and ensures that it will wear evenly.

There are four paper guide rollers [G] to reduce curl in the leading edge of the paper, and to fee d the paper smoothly to the guide plates. There are four marks (slots) on the bracket [F] that corresponds to the roller positions as shown in the lower diagram.

C223 2-33 SM

Page 86

PAPER FEED

4.5 PAPER FEED ROLLER/UPPER SEPARATION ROLLER MECHANISM

[A]

[C]

[B]

[M]

[L]

[K]

[D]

[E] [F]

[J]

Viewed from the non-operation side

[I]

[H]

[G]

The main motor drives the paper feed roller cam [C], which moves the sector gear back and forth. The sector gear [J] will rotate the paper feed roller [M] and the upper separation roller [A]. A one-way clutch inside gear [H] will prevent the rollers from rotating in reverse during the return half of the sector gear movement. The cam will rotate once per sheet of paper.

When the paper feed solenoid [G] is energized, it will pull the link [F] away from the sector gear to allow it to rotate. When the cam roller [D] is at the widest part of the paper feed roller cam [C], the sector stopper [E] will drop away in a counterclo ckw is e dir e cti o n as a clearance is formed be twe en t he stopper and pin [I]. Then, the cam roller [D] on the sector gear will move along the surface of the cam [C]. The solenoid [G] will remain energized during the print cycle.

When the narrowest part of the paper feed roller cam [C] is rotating away from the cam rolle r [D ] an d th e w ide s t pa r t is app roa chi n g, the sector gear [J] will move forward (paper feed direction) and the gear [H] will rotate counterclockwise. The rotation of the gear [H] is transmit ted to the upper separation roller shaft [B] and the upper separation roller [A] will rotate counterclockwise. At the same time, the pulley [K] on the upper separation roller shaft [B] will turn, and the belt [L] will rotate the paper feed roller [M] counterclockwise to feed the printing paper.

When the narrowest part of the paper feed roller cam [C] approaches the cam roller [D] again, the sector gear [J] will move rearward and the gear [H] is turned clockwise. However, a one-way clutch inside the ge ar [H] to prevent the upper separation [A] and paper feed rollers [M] from turning.

SM 2-34 C223

Page 87

PAPER FEED

4.6 SECOND FEED ROLLER MECHANISM

[J]

[A]

[B]

[I]

[C]

[H]

[D]

[E]

[G]

[F]

[K]

Drive Mechanism

The main motor drives the lower second feed roller cam [A], which moves the sector gear [C] back and forth. The sector gear [C] will rotate the lower second feed roller [I]. A one-way clutch inside the feed roller gear [E] prevents the roller from rotating in reverse du ring the retu rn half cycle of the sector gear movement. The cam will rotate once per sheet of paper.

When the paper feed solenoid [G] is energized, it will pull the link [F], the 1st paper feed roller sect or ge ar sto pp er [H], and the 2nd feed rol l er sector gear stopper [K].

The bearing [J] on th e sect or ge ar rotates along the cam surfa c e. Wh en the widest part of the cam com e s to th e be ar i n g [J] , th e sto pp er [B ] i s re l ea sed from the sector ge ar as a clea r an ce i s f orm e d be tw e en the pi n of the secto r gear [D] and the stopper [K].

Detailed

Section

Descriptions

When the feed roller gear rotates counterclockwise, its rotation is not transmitted to the l owe r second fe ed ro ll er du e to the one- way cl ut ch be ari n g in the gear.

When the narrowest part of the second feed roller cam moves away from the bearing [J], the sector gear moves rearward (paper feed di rection) and the feed roller gear will rotate clockwise. As the rotation of the feed roller gear is transmitted to the lower second feed roller, the lower second feed roller turns clockwise to feed the pa pe r to th e dr u m .

C223 2-35 SM

Page 88

PAPER FEED

[B]

[A]

[C]

[G]

[H]

[F]

[A]

[D]

[E]

Release Mechani sm

This mechanism will release the upper second feed rollers [B] from the lower one [G] after the pr e ss ro l ler an d th e dr u m had capt ur e d th e lea di n g ed ge of the paper.

The mechanism is made up of several parts. First, a cam which transmits motion to a sector gear [F]; then another cam will [E] that is part of the sector gear. This cam will push the bearing [D], which will cause the lever [H] attached to the bearing to turn the upper feed roller shaft [C] so that the upper rollers contact with the lower rollers.

At the beginning of each cycle the upper and lower rollers are away fro m each other. They come together halfway through the cycle and at the end of the cycle they will move apart.

Initially, the rollers are separate, and the sector gear [F] is ready to start moving clockwise. The bearing [D] on the lever [H] is in contact with the cam [E] on the sector gear. As the gear turns clockwise, it will cause the cam to turn the lever in the same direction (clockwise).

The lever will lower the upper roller [B]. It does this by turning the roller’s eccentric shaft [C]. Eccentric means that the shaft is not located in the center of the roller, actually it is a little off center, so when the shaft turns the roller, the roller will move up or down.

SM 2-36 C223

Page 89

PAPER FEED

When the cycle is halfway through, the sector gear has reached its maximum rearward position (paper feed direction). The upper roller will touch the lower one and a pair of springs [A] will apply tension at each end of the upper roller. Until this moment the lower roller had not turned.

At this point, the paper will arrive from the first paper feed rollers. The leading edge will hit the two rollers and the paper will buckle slightly. This will ensure that the paper will go into the rollers straight.

The lower roller will now begin to turn and will feed the paper to the drum section. The sector gear is now m ovin g in th e fo r war d dir ect ion , r aisi n g th e upper roller. The gear will return to its original position and the paper feed cycle is now completed.

Service Note

The paper will buckle slightly as the leading edge of the paper arrives from the first paper feed rollers before the second paper feed rollers start to turn. The second feed roller start timing can be adjusted to change the leading edge margin. See Refer to section 5.6.10; Second Feed Roller Start Timing.

Detailed

Section

Descriptions

C223 2-37 SM

Page 90

PAPER FEED

4.7 PAPER SIZE DETECTION

The machine will determine the printing area of the master based on the detected paper size and the original length (which is detected during the original scanning process). If the original size is different from the paper size, the machine will compare the lengths of the original and the paper. The lenght of the master will be the shorter of the two. The printing width of the master is determined by the paper width.

Note:

The determined master prin ting area is not changed if the paper on the paper table is replaced with another size of paper during the master making process.

The printing area of the ma ste r for ea ch de te cte d pape r size is as fo ll ows:

Paper Size Printing Area of the Master

Width (mm) Length (mm)

A3 B4 A4

A4-S

B5-S

DLT

LG LT

LT-S

HLT

292 256 208 292 180 256 146 278 214 214 278 138

412 356 289 202 249 174 202 412 348 271 208 208

S: Sideways feed The machine can only distinguish standard sizes. If a non-standard paper

size or original size is used, the machine will determine a standard size. If the actual paper size is larger than the determined paper size, the excess area will not be transferred to the master. In such a case, the paper size detection can be canceled using SP mode (no. 142-1) in order to obtain the entire image of the or igi n al . Ho weve r , th e pr e ss ro ll er may be com e contaminated wit h i nk i f th e pa pe r is smal l e r t ha n th e im ag e on the ma ste r . The ink will be transferred to the back side of the prints when the next printing is do ne wi t h l ar g er pa pe r .

SM 2-38 C223

Page 91

PAPER FEED

Paper Size Detection for the Paper Table

[B]

[A]

[D]

[C]

[F]

[E]

[G]

Detailed

Section

Descriptions

The paper width detection plate [A] located behind the front paper side guide [B] have four (4) width s ensors.

The front and rear paper side guides are adjusted to the paper width. Depending on the paper width sensors ([C] [D] [E] [F]; 4 photointerrupters) can be interrupted and whether the paper length sensor [G] (a reflective photosensor) is activated, the machine will determine the size of the paper table as shown in the cha r t be l ow.

Paper Size A4-S LT-S B5-S LT A4 B5 A5 HLT A3 DLT B4 LG Paper Width Sensor-0 [C] o x o x x x o x x o o x o x Paper Width Sensor-1 [D] x o o x x x o o o o x o o x Paper Width Sensor-2 [E] x x o o o o o x x x x x o o Paper Width Sensor-3 [F] x x x x x o o o o o x x x x Paper Length Sensor [G] x x x x x x x x x x o o o o

x: Not blocked or Not activated, o: Blocke d or Act ivated S: Sideways feed

C223 2-39 SM

Page 92

PAPER FEED

[A]

[B]

[C]

The side pads [A] in the front and the rear paper side guides prevent multiple feed. These are especiall y useful when thin paper is used. Aft er adjusting the paper side plates to the proper paper width (so that they touch th e paper lightly), move the fr on t an d r ear side pa d leve r s to th e ri gh t ( as viewe d fr o m the operation side of the machine). Normally, the pressure from the side pads should be release d by moving the levers to the left.

The separation plate pressure can be adjusted to match the type of paper being used. The plate which supports the pressure plate spring [B] can be moved up or down by turning th e ecce ntric cam shaft [C] (this is a service-level adjustment only).

If multiple pap er feed frequently occur s, the plate should be move d up w ar d . If the paper misf ee ds fr e qu en tly , the pl at e sho ul d be move d downward.

SM 2-40 C223

Page 93

PAPER FEED

4.8 SEPARATION ROLLER PRESSURE RELEASE MECHANISM

[A]

[B]

[C]

Detailed

Section

Descriptions

[D]

[E]

When printing is finished or a misfeed occurs, the paper table drive motor will rotate for 500 milliseconds to lower the paper table. The paper on the paper table will move down from the paper feed roller [D] and the paper feed bracket [A] is pulled down by its own weight.

At this time, the shaft [B] will push down the left separation lever [C] and this will move the lower separation roller [E] slightly downward.

This mechanism will make it easier to remove paper that is caught between the upper and lower separation rollers.

C223 2-41 SM

Page 94

PAPER FEED

4.9 PAPER TABLE SIDE ADJUSTMENT MECHANISM

[B]

[A]

[C]

[G]

[D]

[F]

[E]

The shaft [D] of the fine adjustment dial [F] is threaded. The inside of the sleeve [E] is also threaded. The sleeve is fixed to the paper table stay [B] through a bracket [A].

The paper table bra cket [C] mounted under th e ta bl e is fi xe d to bot h en ds of the adjustment dial shaft. When the adjustment dial is turned clockwise, the feed table bracket [C] and the paper tabl e move to the right.

The indicator [G] fixed to the bracket [A] will show how much the paper table has moved.

SM 2-42 C223

Page 95

PAPER FEED

4.10 NOISE REDUCTION COVER

[A]

[D]

[B]

[A]

[E]

[C]

[A]

Detailed

Section

Descriptions

The noise reduction cover [A] will reduce the paper feed noise. When the paper feed table [B] is in the paper feed position, there is a small clearance between the pape r stack an d th e no i se r ed uct i on cover .

The noise reduction cover can be folded back when a user puts paper on the table. The magnet [C] catch es th e cove r to keep i t in th e up pe r position.

By loosening the screw [D], the bracket [E] can be slid in the direction of the arrow and the noi se r ed uct i on cover can be r em o ved fr om the machine.

C223 2-43 SM

Page 96

4.11 ELECTRICAL TIMING

PAPER FEED

Paper Table Height Sensor Paper Table Up Relay

(Table up) Paper Table Brake Relay

First Drum Position Sensor Second Drum Position Sensor

Paper Feed Solenoid Vacuum Fan Motor

Air Knife Motor Main Motor (Forward)

Paper Table Down Relay

Print key ON

15 ms

Stop key ON

30 ms

50 ms

Counter Reset

500 ms

T1: When paper is pla ced on th e pa per table and the Prin t key i s pr esse d,

the paper table will move upward until the paper table height sensor is activated. 15 milliseconds after the height sensor is activated, the paper table brake signal will turn on for 50 milliseconds to apply the braking force to the paper tab l e dr iv e motor to prevent the pape r tab l e fr o m overrunning.

T2: When the height sensor is activated, the vacuum fa n motor and air knife

motor will turn on. At the same time, the drum (main motor) will start rotating in the forward direction (this is the printing direction).

T3: The paper feed solenoid is energized when the interrupter at the rear

side of the drum activat es th e seco nd drum po siti o n sens or.

T4: After the paper is fed, the top of the paper stack is a little lower and the

height sensor is de-activated. When the second drum position sensor is activated, the paper table drive motor will start rotating. This will lift the paper table until the height sensor is re-activated (approximately 30 milliseconds after the motor starts). When the height sensor is re-activated, the motor will stop rotating.

T5: After the Stop key is press ed, the paper feed solenoid is de-energized

the next time that the second drum position sensor is activated. The counter on the operation panel will be reset at this time.

T6: When the second drum po siti o n sen sor i s aga in act i vat ed aft er on e m ore

additional drum rotation, the vacuum fan motor and air knife motor will turn off. Then, the drum will rotate one more time and will stop at the first drum position actuation position (the drum home position).

SM 2-44 C223

Page 97

PRINTING

5. PRINTING

5.1 OVERALL

[A]

[B]

[C]

Detailed

Section

Descriptions

In the standby mode, the printing pressure roller is held away from the drum by two devices, a solenoid (the printing pressure solenoid), and a mechanical arm (activated by the paper detection feeler [A]).

At the start of the print cycle, the prin tin g pressure solenoid is energi zed to release its hold on the pr inting mechanism at poi n t [C], and the paper fee d solenoid is energ ized t o tra nsfer drive from the m ain motor to the paper f ee d mechanism.

Soon after the paper has reached the second paper feed roller, the paper detection feeler [A] is pushed downward by the paper, which completely releases the prin ti n g mech anism.

Printing pressure i s the n ap pli e d ( th e pre ss ro ll er [B] touches the drum) to transfer the ink from the master to the paper.

If the machine is not used for more than 6 hours, a drum stroke operation is performed before the old master wrapped around the drum is removed. This operation will minimize the number of wasted prints before the image is stabilized.

C223 2-45 SM

Page 98

PRINTING

5.2 PAPER DETECTION AND PRINTING PRESSURE ON/OFF MECHANISM

Rear View

[F]

Front View

[F]

[E]

[G]

[A]

[D]

[C]

[B]

[H]

During the printing process, the main motor will turn the gear [A] and pressure cam [B] clockwise.

When the widest par t of th e pr e ssur e cam [B] re ach es th e be ar ing on the pressure on/off lever [C], the paper detection arm [D] will separate from the pressure on/off lever [C]. At this moment, if paper is being fed, the paper will press down the paper detection feeler [E]. Then, the paper detection arm [D] will turn clockwise to release the pressure on/off lever. As a result, the pressure on/off bearing will continue moving along the pressure cam and the press roller [F] will move against the drum to apply printing pressure.

The printing pressure can be adju ste d by th e pre ssur e spri ng [G] . The printing pre ssure senso r fee ler [H ] is awa y from th e sen sor w hil e pri nt ing

pressure is applied.

SM 2-46 C223

Page 99

PRINTING

5.3 PRINTING PRESSURE RELEASE MECHANISM

[A]

[B]

[G]

[C]

[D]

Detailed

Section

Descriptions

[H]

[E]

[F]

[D]

During the normal print operation, the printing pressure s olenoid [G] is energized to release the pressure on/off lever [D] at the same time as the paper feed solenoid is ene r gized.

If a jammed sheet of pa pe r in the pr inting section presses dow n on the pap er detection feeler [A], the pressure on/off lever [D] will remain disengaged from the paper detection arm [C]. Printing pressure will keep on being applied to the drum. If this printing pressure is still applied when an operator slides out the drum unit to remove the jammed sheet, the drum su rface and the press roller can be damaged.

To prevent this, printing pressure is released from the dr um if a paper misfeed is detected. When a misfeed is detected, the printing pressure solenoid [G] is de-energized. Then, the drum will rotate to the home position. While the drum is being returned to the home position, the widest part of the pressure cam [F] approach the bearing [E]. This will move the pressure on/off lever [D] clockwise, then the stopper [H] will engage the lever [D] (because the stopper [H ] is presse d do wn by spr in g te nsi o n fro m the solenoid). Thus, printing pressure is released since the lever [D] is connected to the press roller [B].

C223 2-47 SM

Page 100

5.4 QUALITY START OPERATION

PRINTING

[D]

[E]

[C]

[A]

[C]

[B]

If the main motor has been kept off for mor e than 6 ho ur s, a drum stro ke operation will be performed before the old master wrapped around the drum is removed. This operation will remove the dried ink with the ejected master to minimize the number of waste prints before the print image is stabilized.

When the master making key is pressed, the master press sheet solenoid [A] is energized. The master press sheet mylar [B] is inserted between the drum and the press roller [C]. At the same time, the detection arm release solenoid [D] is energized to release the paper detection arm [E]. Then, the main motor will turn on and the press roller will press the mylar sheet to stroke the drum surface. The drum will rotate twice (three times if the machine is kept off for more than 32 hours) to stroke the old master that is around the drum. Then the master press sheet solenoid and the detec tion pin release solenoid are de-energized an d th e m ast er ej e ct op er a ti o n sta r ts.

Because there is no paper in the paper path at this time to release the paper detection arm [E] so that printing pressure can be applied to the master press sheet mylar [B], th e de te cti o n arm rel e ase solen oid [D] w as ad de d to the mechanism.

SM 2-48 C223

Ricoh VT6000, VT3800 Service Manual

Table of Contents

IMPORTANT SAFETY NOTICES

SPECIFICATIONS

GUIDE TO COMPONENTS

MECHANICAL COMPONENT LAYOUT

DRIVE LAYOUT

ELECTRICAL COMPONENT DESCRIPTIONS

PRINTING PROCESS

MAJOR DIFFERENCES BETWEEN THE VT3600 AND THE VT3800

MASTER EJECT

SCANNER

MASTER FEED

PAPER FEED

PRINTING