Manual Service ricoh C238-5430 Duplicator

C231/C237/C238/C248/C267 SERVICE MANUAL

000914MIU

C231/C

237/C238/C

248/C267

SERVIC

E MA

NU

AL

C231/C237/C238/C248/C267 SERVICE MANUAL

000914MIU

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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.

2006 RICOH Corporation. All rights reserved.

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

WARNING

LEGEND

PRODUCT CODE COMPANY GESTETNER LANIER RICOH SAVIN

C231 5306L JP1030 3150DNP C237 5308L LDD020 JP1230 3150eDNP C238 5430 LDD030 JP3000 3260DNP C248 5309L JP1235 3160DNP C267 CP6143L LDD120 DX3340 3180DNP

DOCUMENTATION HISTORY

REV. NO. DATE COMMENTS * 7/98 Original Printing 1 8/2000 C237 Addition 2 1/2002 C238 Addition 3 2/2003 C248 Addition 4 6/2006 C267 Addition

i SM C231/C237/C238/C248/C267

C231 TABLE OF CONTENTS

OVERALL INFORMATION

OVERALL INFORMATION ............................................................... 1-1 1.1 SPECIFICATION.......................................................................................1-1 1.2 GUIDE TO COMPONENTS AND THEIR FUNCTION...............................1-5

1.2.1 MACHINE EXTERIOR......................................................................1-5 1.2.2 MACHINE INTERIOR.......................................................................1-6 1.2.3 OPERATION PANEL........................................................................1-7

Keys......................................................................................................1-7 Indicators ..............................................................................................1-9

1.3 PRINTING PROCESS.............................................................................1-10 1.4 MECHANICAL COMPONENT LAYOUT .................................................1-11 1.5 ELECTRICAL COMPONENT LAYOUT...................................................1-12

1.5.1 ADF ................................................................................................1-12 1.5.2 MAIN BODY ...................................................................................1-13

Boards ................................................................................................1-14 Motors.................................................................................................1-14 Solenoids ............................................................................................1-15 Switches .............................................................................................1-15 Sensors...............................................................................................1-15 Counters .............................................................................................1-16 Others .................................................................................................1-16

1.6 DRIVE LAYOUT ......................................................................................1-17 DETAILED DESCRIPTIONS

DETAILED SECTION DESCRIPTIONS ............................................ 2-1 2.1 SCANNER AND OPTICS ..........................................................................2-1

2.1.1 BOOK SCANNER OVERVIEW ........................................................2-1 2.1.2 ADF OVERVIEW ..............................................................................2-2 2.1.3 CONTACT IMAGE SENSOR............................................................2-4 2.1.4 DRIVE MECHANISM........................................................................2-5

Book Scanner .......................................................................................2-5 ADF.......................................................................................................2-6

2.1.5 PICK-UP AND FEED (ADF) .............................................................2-7 2.1.6 SEPARATION MECHANISM (ADF) .................................................2-8 2.1.7 ERROR CONDITIONS .....................................................................2-9

Book Scanner .......................................................................................2-9 ADF.......................................................................................................2-9

2.2 IMAGE-PROCESSING............................................................................2-10 2.2.1 OVERVIEW ....................................................................................2-10 2.2.2 A/D CONVERSION PROCESSING................................................2-11

Shading Distortion Correction .............................................................2-11

Rev. 08/2001

ii C231/C237/C238/C248/C267 SM

Original Background Correction..........................................................2-12 Peak Hold ...........................................................................................2-12

2.2.3 BINARY PROCESSING .................................................................2-13 Data Compensation Processing .........................................................2-13 MTF Correction...................................................................................2-14 Binary Processing in Letter/Photo Mode.............................................2-14 Error Diffusion.....................................................................................2-15

2.2.4 MAIN SCAN MAGNIFICATION ......................................................2-16 2.2.5 IMAGE POSITION ADJUSTMENT IN THE MAIN SCAN DIRECTION.........................................................................2-17 2.2.6 PASTE SHADOW ERASE MODE..................................................2-17 2.2.7 THERMAL HEAD............................................................................2-18

Specifications......................................................................................2-18 Thermal Head Control.........................................................................2-18 Thermal Head Protection ....................................................................2-18 Remarks for Handling the Thermal Head............................................2-19

2.3 MASTER EJECT .....................................................................................2-20 2.3.1 OVERALL .......................................................................................2-20 2.3.2 MASTER CLAMPER OPEN MECHANISM ....................................2-21

Drum Position Lock Mechanism .........................................................2-21 2.3.3 MASTER EJECT ROLLER MECHANISM ......................................2-22 2.3.4 PRESSURE PLATE MECHANISM.................................................2-23

2.4 MASTER FEED.......................................................................................2-24 2.4.1 OVERALL .......................................................................................2-24 2.4.2 MASTER FEED MECHANISM .......................................................2-25 2.4.3 MASTER CLAMPER OPERATION AND TENSION ROLLER RELEASE MECHANISM ................................................................2-26 2.4.4 CUTTER MECHANISM ..................................................................2-27

2.5 DRUM......................................................................................................2-28 2.5.1 OVERALL .......................................................................................2-28 2.5.2 DRUM DRIVE MECHANISM ..........................................................2-29 2.5.3 INK SUPPLY MECHANISM............................................................2-30 2.5.4 INK ROLLER MECHANISM ...........................................................2-31 2.5.5 INK SUPPLY CONTROL ................................................................2-32 2.5.6 DETECTION OF MASTERS ON THE DRUM ................................2-33

2.6 PAPER FEED..........................................................................................2-34 2.6.1 OVERALL .......................................................................................2-34 2.6.2 PAPER FEED MECHANISM ..........................................................2-35 2.6.3 PAPER FEED/SEPARATION PRESSURE ADJUSTMENT MECHANISM .................................................................................2-36 2.6.4 REGISTRATION ROLLER MECHANISM.......................................2-37

Registration Roller Drive .....................................................................2-37 Registration Roller Up/Down Mechanism ...........................................2-38

2.6.5 PRINTING PRESSURE MECHANISM...........................................2-39 2.6.6 PAPER TABLE MECHANISM ........................................................2-40

Table Up and Down Mechanism.........................................................2-40 Paper End Detection Mechanism .......................................................2-40 Paper Table Side Fence Mechanism..................................................2-41 Paper Table Side-to-Side Shift Mechanism ........................................2-41

iii SM C231/C237/C238/C248/C267

Side Fence Friction Pads....................................................................2-42 2.7 PAPER DELIVERY..................................................................................2-43

2.7.1 OVERALL .......................................................................................2-43 2.7.2 PAPER DELIVERY UNIT DRIVE MECHANISM.............................2-44 2.7.3 PAPER SEPARATION FROM DRUM ............................................2-45 2.7.4 EXIT PAWL DRIVE MECHANISM..................................................2-46

2.8 ERROR DETECTION..............................................................................2-47 2.8.1 ORIGINAL JAM DETECTION.........................................................2-47 2.8.2 MASTER EJECT JAM DETECTION...............................................2-47 2.8.3 MASTER FEED JAM DETECTION ................................................2-48 2.8.4 PAPER FEED JAM DETECTION ...................................................2-49

INSTALLATION

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

3.1.1 OPTIMUM ENVIRONMENTAL CONDITION....................................3-1 3.1.2 ENVIRONMENTS TO AVOID...........................................................3-1 3.1.3 POWER CONNECTION...................................................................3-1 3.1.4 ACCESS TO MACHINE ...................................................................3-2

3.2 INSTALLATION PROCEDURE .................................................................3-3 3.2.1 MAIN BODY .....................................................................................3-3

Accessory Check ..................................................................................3-3 Installation Procedure ...........................................................................3-4

3.2.2 AUTO DOCUMENT FEEDER (OPTION) .........................................3-9 Accessory Check ..................................................................................3-9 Installation Procedure .........................................................................3-10

3.2.3 TAPE MARKER (OPTION).............................................................3-14 Accessory Check ................................................................................3-14 Installation Procedure - For C231 - .....................................................3-15

3.2.4 COLOR DRUM (OPTION) ..............................................................3-17 3.2.5 INTERFACE BOARD (OPTION) ....................................................3-18

Accessory Check ................................................................................3-18 Installation Procedure .........................................................................3-18

SERVICE TABLES

SERVICE TABLES............................................................................ 4-1 4.1 SERVICE REMARKS ................................................................................4-1

4.1.1 MASTER FEED SECTION ...............................................................4-1 1. Thermal Head Installation .................................................................4-1 2. Thermal Head Voltage Adjustment ...................................................4-1

4.1.2 PAPER FEED SECTION ..................................................................4-1 1. Friction Pad.......................................................................................4-1 2. Paper Feed Roller and Paper Separation Roller...............................4-1 3. Paper Guide Plate Position for Registration Roller ...........................4-1

4.1.3 DRUM AND DRUM DRIVE SECTION..............................................4-2

iv C231/C237/C238/C248/C267 SM

1. Main Motor........................................................................................4-2 2. Doctor Roller .....................................................................................4-2 3. Drum Master Clamper.......................................................................4-2 4. Ink Roller Unit ...................................................................................4-2 5. Ink Pump...........................................................................................4-2

4.1.4 PAPER DELIVERY SECTION..........................................................4-3 1. Exit Pawl ...........................................................................................4-3

4.1.5 ELECTRICAL COMPONENTS.........................................................4-3 1. Main Processing Unit (MPU) 1..........................................................4-3 2. Main Processing Unit (MPU) 2..........................................................4-3 3. Power Supply Unit ............................................................................4-3 4. Sensor Adjustments..........................................................................4-3

4.2 DIP SW, LED, VR, TP, AND FUSE TABLES.............................................4-4 4.2.1 TEST POINTS ..................................................................................4-4

MPU......................................................................................................4-4 4.2.2 POTENTIOMETERS ........................................................................4-4

MPU......................................................................................................4-4 Power Supply Unit ................................................................................4-4

4.2.3 LED'S ...............................................................................................4-4 4.2.4 FUSES..............................................................................................4-5

MPU......................................................................................................4-5 PSU ......................................................................................................4-5

4.3 SERVICE CALL CODES ...........................................................................4-6 4.4 SERVICE PROGRAM MODE....................................................................4-8

4.4.1 ACCESS PROCEDURE ...................................................................4-8 Service Program Mode Access Procedure (For Engineers) .................4-8 Service Program Mode Access Procedure (For Users) ........................4-9 Change Adjustment Values or Modes.................................................4-10

4.4.2 SERVICE PROGRAM TABLE ........................................................4-11 Remarks .............................................................................................4-20

4.4.3 INPUT/OUTPUT CHECK MODE....................................................4-23 Input/Output Check Mode Access Procedure .....................................4-23 Input Check Table...............................................................................4-24 Output Check Table ............................................................................4-26

4.5 TEST PATTERN IMAGE MODE .............................................................4-28 4.6 USER CODE MODE ...............................................................................4-29 4.7 ROM HISTORY .......................................................................................4-31

4.7.1 C231 FIRMWARE MODIFICATION HISTORY................................4-31 PREVENTIVE MAINTENANCE

PREVENTIVE MAINTENANCE......................................................... 5-1 5.1 MAINTENANCE TABLE ............................................................................5-1

REPLACEMENT AND ADJUSTMENT

REPLACEMENT AND ADJUSTMENT ............................................. 6-1

v SM C231/C237/C238/C248/C267

6.1 EXTERIOR COVER REMOVAL................................................................6-1 6.1.1 ADF ..................................................................................................6-1 6.1.2 OPERATION PANEL........................................................................6-2 6.1.3 PLATEN COVER AND UPPER COVERS ........................................6-3 6.1.4 TOP COVER AND EXPOSURE GLASS ..........................................6-3 6.1.5 OTHER COVERS.............................................................................6-4

6.2 COPY IMAGE ADJUSTMENT...................................................................6-6 6.2.1 LEADING EDGE REGISTRATION ADJUSTMENT..........................6-6 6.2.2 SIDE-TO-SIDE REGISTRAION ADJUSTMENT...............................6-7 6.2.3 VERTICAL MAGNIFICATION ADJUSTMENT..................................6-8 6.2.4 LEADING EDGE BLANK MARGIN ADJUSTMENT..........................6-9

6.3 MPU REPLACEMENT.............................................................................6-10 6.4 ORIGINAL FEED SECTION....................................................................6-11

6.4.1 ADF ROLLER ASSSEMBLY ..........................................................6-11 6.4.2 PICK-UP ROLLER..........................................................................6-11 6.4.3 FEED ROLLER...............................................................................6-12 6.4.4 SEPARATION ROLLER .................................................................6-12 6.4.5 ADF MOTOR AND COVERS .........................................................6-13 6.4.6 R0 AND R1 ROLLERS ...................................................................6-13 6.4.7 R2 ROLLER....................................................................................6-14 6.4.8 DOCUMENT SENSOR...................................................................6-15 6.4.9 SCAN LINE SENSOR.....................................................................6-15 6.4.10 COVER SENSORS ......................................................................6-16

6.5 MASTER FEED SECTION ......................................................................6-17 6.5.1 MASTER MAKING UNIT REMOVAL..............................................6-17 6.5.2 THERMAL HEAD REMOVAL .........................................................6-19

Remarks for thermal head installation.................................................6-20 6.5.3 THERMAL HEAD VOLTAGE ADJUSTMENT.................................6-21 6.5.4 MASTER END SENSOR ADJUSTMENT .......................................6-23

6.6 MASTER EJECT SECTION ....................................................................6-24 6.6.1 MASTER EJECT UNIT REMOVAL.................................................6-24

6.7 PAPER FEED SECTION.........................................................................6-25 6.7.1 PAPER FEED ROLLER, PICK-UP ROLLER, AND FRICTION PAD.....................................................................6-25 6.7.2 PAPER SEPARATION PRESSURE ADJUSTMENT......................6-26 6.7.3 PAPER FEED PRESSURE ADJUSTMENT ...................................6-27 6.7.4 REGISTRATION ROLLER CLEARANCE ADJUSTMENT..............6-28

6.8 PRINTING SECTION ..............................................................................6-29 6.8.1 PRESS ROLLER REMOVAL..........................................................6-29 6.8.2 PRESS ROLLER LOCK LEVER ADJUSTMENT............................6-30 6.8.3 PRINTING PRESSURE ADJUSTMENT.........................................6-32

6.9 DRUM AND DRIVE SECTION ................................................................6-33 6.9.1 DRUM CLOTH SCREEN REMOVAL .............................................6-33

Remarks for the cloth screen installation ............................................6-34 6.9.2 DRUM MASTER CLAMPER AND METAL SCREEN REMOVAL...6-36

Remarks for drum screen installation..................................................6-38 6.9.3 INK ROLLER UNIT REMOVAL ......................................................6-39 6.9.4 DOCTOR ROLLER GAP ADJUSTMENT .......................................6-41 6.9.5 INK DETECTION ADJUSTMENT...................................................6-43

vi C231/C237/C238/C248/C267 SM

6.9.6 INK PUMP REMOVAL AND PLUNGER POSITION ADJUSTMENT .............................................................6-44 6.9.7 MAIN DRIVE TIMING BELT TENSION ADJUSTMENT .................6-46 6.9.8 MAIN MOTOR PULLEY POSITION ADJUSTMENT.......................6-48

6.10 PAPER DELIVERY SECTION...............................................................6-49 6.10.1 VACUUM UNIT REMOVAL ..........................................................6-49 6.10.2 DELIVERY BELT/PAPER EXIT SENSOR REMOVAL .................6-50 6.10.3 VACUUM MOTOR REMOVAL .....................................................6-51 6.10.4 EXIT PAWL CLEARANCE ADJUSTMENT...................................6-52 6.10.5 EXIT PAWL DRIVE TIMING ADJUSTMENT ................................6-53

TAPE MARKER C532

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

BASIC OPERATION ......................................................................... 7-2 2.1 OVERVIEW ...............................................................................................7-2 2.2 DRIVE AND CUTTING MECHANISM .......................................................7-3 2.3 MANUAL CUT ...........................................................................................7-4

REPLACEMENT AND ADJUSTMENT ............................................. 7-5 3.1 CUTTER REPLACEMENT ........................................................................7-5 3.2 CUTTER HOME POSITION SENSOR REPLACEMENT ..........................7-6 3.3 TAPE CUT LENGTH ADJUSTMENT ........................................................7-7

PRIPORT CONTROLLER USERS GUIDE 8-1

vii SM C231/C237/C238/C248/C267

Rev. 07/2001


1. OVERALL INFORMATION .......................................................... 1-1 1.1 ESSENTIAL DIFFERENCES BETWEEN THE C237 AND C231 MODELS ...................................................................................................1-1 1.2 SPECIFICATIONS.....................................................................................1-4 1.3 NEW ELECTRICAL COMPONENTS ........................................................1-5

1.3.1 MAIN BODY .....................................................................................1-5 1.3.2 TABLES OF ELECTRICAL COMPONENTS ....................................1-5

Boards ..................................................................................................1-5 Switches ...............................................................................................1-5

2. DETAILED SECTION DESCRIPTIONS ....................................... 2-1 2.1 PAPER FEED............................................................................................2-1

2.1.1 PAPER FEED/SEPARATION PRESSURE ADJUSTMENT MECHANISM ...................................................................................2-1

2.2 PAPER DELIVERY....................................................................................2-2 2.2.1 EXIT PAWL AIR PUMP MECHANISM (CHINESE MODEL ONLY)..2-2

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

4. SERVICE TABLES....................................................................... 4-1 4.1 SERVICE CALL CODES ...........................................................................4-1 4.2 SERVICE PROGRAM TABLE...................................................................4-3 4.3 INPUT/OUTPUT CHECK MODE.............................................................4-12

Input Check Table...............................................................................4-12 Output Check Table ............................................................................4-14

4.4 ROM HISTORY .......................................................................................4-16 4.4.1 C237 FIRMWARE MODIFICATION HISTORY...............................4-16

5. PREVENTIVE MAINTENANCE.................................................... 5-1

6. REPLACEMENT AND ADJUSTMENT ........................................ 6-1 6.1 MASTER FEED SECTION ........................................................................6-1

6.1.1 MASTER END SENSOR ADJUSTMENT .........................................6-1 6.2 MASTER EJECT SECTION ......................................................................6-2

6.2.1 MASTER EJECT UNIT REMOVAL...................................................6-2 6.3 PAPER FEED SECTION...........................................................................6-2

6.3.1 PAPER SEPARATION PRESSURE ADJUSTMENT........................6-2 6.4 PAPER DELIVERY SECTION...................................................................6-3

6.4.1 AIR PUMP ADJUSTMENT (CHINESE MODEL ONLY)....................6-3

viii C231/C237/C238/C248/C267 SM


1. INSTALLATION............................................................................ 1-1 1.1 INSTALLATION REQUIREMENTS ...........................................................1-1

1.1.1 OPTIMUM ENVIRONMENTAL CONDITION....................................1-1 1.1.2 ENVIRONMENTS TO AVOID...........................................................1-1 1.1.3 POWER CONNECTION...................................................................1-1 1.1.4 ACCESS TO THE MACHINE ...........................................................1-2


Accessory Check ..................................................................................1-3 Installation Procedure ...........................................................................1-4

1.2.2 PLATEN COVER INSTALLATION (OPTION) ..................................1-9 Accessory Check ..................................................................................1-9 Installation Procedure ...........................................................................1-9

1.2.3 ADF INSTALLATION (OPTION).....................................................1-10 Accessory Check ................................................................................1-10 Installation Procedure .........................................................................1-11 ADF stabilizer installation....................................................................1-14

1.2.4 TAPE MARKER (OPTION).............................................................1-15 Accessory Check ................................................................................1-15 Installation Procedure .........................................................................1-16 - For C238 - ........................................................................................1-16 - For C231 and C237- .........................................................................1-17 - For C226 - ........................................................................................1-18 - For C210, C218, C219, C222, and C223 - .......................................1-19 - For C217 and C225 - ........................................................................1-20 - Common Steps -...............................................................................1-21

1.2.5 ADDITIONAL DRUMS (OPTION)...................................................1-22 1.2.6 INTERFACE BOARD (OPTION) ....................................................1-23

Accessory Check ................................................................................1-23 Installation Procedure .........................................................................1-23

2. PREVENTIVE MAINTENANCE.................................................... 2-1 2.1 MAINTENANCE TABLE ............................................................................2-1

3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1 3.1 GENERAL CAUTION ................................................................................3-1 3.2 COVERS / BOARDS .................................................................................3-1

3.2.1 FRONT COVER / PANEL.................................................................3-1 3.2.2 REAR COVERS................................................................................3-2 3.2.3 MPU..................................................................................................3-2 3.2.4 PSU ..................................................................................................3-3

ix SM C231/C237/C238/C248/C267

3.3 SCANNER.................................................................................................3-4 3.3.1 EXPOSURE GLASS / SCALES........................................................3-4 3.3.2 SBU AND LAMP STABILIZER / SCANNER MOTOR.......................3-4 3.3.3 SCANNER H.P. SENSOR / PLATEN COVER SENSOR .................3-5 3.3.4 EXPOSURE LAMP (XENON LAMP) ................................................3-6 3.3.5 SCANNER WIRES ...........................................................................3-7

Installation.............................................................................................3-7 3.3.6 IMAGE ADJUSTMENT.....................................................................3-9

3.4 MASTER EJECT .....................................................................................3-10 3.4.1 MASTER EJECT UNIT ...................................................................3-10

3.5 MASTER FEED.......................................................................................3-11 3.5.1 MASTER MAKING UNIT ................................................................3-11 3.5.2 THERMAL HEAD............................................................................3-11

Installation...........................................................................................3-12 3.5.3 THERMAL HEAD VOLTAGE ADJUSTMENT.................................3-13 3.5.4 MASTER END SENSOR ADJUSTMENT .......................................3-14

3.6 PAPER FEED..........................................................................................3-15 3.6.1 PICK-UP ROLLER / PAPER FEED ROLLER / FRICTION PAD.....3-15 3.6.2 PAPER SEPARATION PRESSURE ADJUSTMENT......................3-15 3.6.3 PAPER WIDTH DETECTION BOARD ...........................................3-16

3.7 PRINTING ...............................................................................................3-17 3.7.1 PRESS ROLLER ............................................................................3-17 3.7.2 PRESS ROLLER RELEASE LEVER ADJUSTMENT.....................3-18 3.7.3 PRINTING PRESSURE ADJUSTMENT.........................................3-19

3.8 DRUM......................................................................................................3-20 3.8.1 PREPARATION..............................................................................3-20 3.8.2 CLOTH SCREEN............................................................................3-20

Installation...........................................................................................3-21 3.8.3 CLAMPER / METAL SCREEN .......................................................3-22

Installation...........................................................................................3-23 3.8.4 INK PUMP ADJUSTMENT .............................................................3-24 3.8.5 INK ROLLER UNIT / INK ROLLER ONE-WAY CLUTCH ...............3-26 3.8.6 DOCTOR ROLLER GAP ADJUSTMENT .......................................3-27 3.8.7 INK DETECTION ADJUSTMENT...................................................3-28 3.8.8 MAIN MOTOR PULLEY POSITION................................................3-28 3.8.9 MAIN DRIVE TIMING BELT ADJUSTMENT ..................................3-28

3.9 PAPER DELIVERY..................................................................................3-29 3.9.1 PAPER DELIVERY UNIT ...............................................................3-29 3.9.2 DELIVERY BELT / PAPER EXIT SENSOR....................................3-29 3.9.3 EXIT PAWL ADJUSTMENT ...........................................................3-30

Clearance adjustment .........................................................................3-30 Timing adjustment...............................................................................3-31

3.9.4 AIR PUMP ADJUSTMENT .............................................................3-32 3.10 SPECIAL TOOLS ..................................................................................3-33

x C231/C237/C238/C248/C267 SM

4. TROUBLESHOOTING ................................................................. 4-1 4.1 ERROR CODES........................................................................................4-1 4.2 ELECTRICAL COMPONENT DEFECTS ..................................................4-3

4.2.1 SENSORS ........................................................................................4-3 4.2.2 SWITCHES.......................................................................................4-4 4.2.3 LINES ...............................................................................................4-5

4.3 FUSE, LED, VR, DIP-SW, AND TP TABLES ............................................4-6 4.3.1 BLOWN FUSE CONDITIONS ..........................................................4-6 4.3.2 LEDS.............................................................................................4-6 4.3.3 VRS...............................................................................................4-6 4.3.4 DIP SWITCHES................................................................................4-7 4.3.5 TEST POINTS ..................................................................................4-7

5. SERVICE TABLES....................................................................... 5-1 5.1 USING SERVICE PROGRAM MODES.....................................................5-1

5.1.1 ACCESSING SP MODES.................................................................5-1 Entering SP Mode.................................................................................5-1 Leaving SP Mode .................................................................................5-1

5.1.2 HOW TO SELECT A PROGRAM NUMBER.....................................5-2 5.2 MAIN MENU NO.1: COPY DATA..............................................................5-3

5.2.1 SP TABLE ........................................................................................5-3 5.2.2 SP1-70, 71: FIRMWARE/ROM SUFFIX INFORMATION .................5-4 5.2.3 SP1-80: ERROR CODE INFORMATION .........................................5-4 5.2.4 SP1-72: SERIAL NUMBER (SERVICE) SP1-75 (FACTORY) ..........5-5

5.3 MAIN MENU NO.2: BASIC SETTINGS .....................................................5-6 5.3.1 SP TABLE ........................................................................................5-6 5.3.2 SP2-41, 2-42: THERMAL HEAD ENERGY CONTROL....................5-6 5.3.3 SP2-24: SLOW STARTING MODE ..................................................5-6 5.3.4 SP2-33: RE-FEEDING......................................................................5-7

5.4 MAIN MENU NO.3: SYSTEM SETTINGS .................................................5-8 5.4.1 SP TABLE ........................................................................................5-8 5.4.2 SP3-1: INPUT THE PRESENT TIME ...............................................5-8 5.4.3 SP3-3: INPUT SERIAL NUMBER ON SP1-72 .................................5-9

5.5 MAIN MENU NO.4: INPUT MODE ..........................................................5-10 5.5.1 SP TABLE ......................................................................................5-10 5.5.2 SP4-45: PAPER SIZE DISPLAY ....................................................5-10

5.6 MAIN MENU NO.5: OUTPUT MODE ......................................................5-11 5.6.1 SP TABLE ......................................................................................5-11

5.7 MAIN MENU NO.6: ADJUSTMENT.........................................................5-12 5.7.1 SP TABLE ......................................................................................5-12 5.7.2 SP6-40: INK DETECTION ADJUSTMENT .....................................5-12 5.7.3 IMAGE ADJUSTMENT (SP6-10, -21, -5, -3, AND -1).....................5-13

SP6-10: Master writing speed.............................................................5-13 SP6-21: Paper registration position ....................................................5-13 SP6-05: Scanning speed - platen .......................................................5-14 SP6-06: Scanning speed - ADF..........................................................5-14 SP6-03: Scanning start position - platen.............................................5-14 SP6-04: Scanning start position - ADF ...............................................5-14 SP6-01: Main scan position - platen ...................................................5-14

Rev. 05/2003

xi SM C231/C237/C238/C248/C267

SP6-02: Main scan position - ADF......................................................5-14 5.7.4 SP6-31: SBU CALIBRATION .........................................................5-15 5.7.5 SP6-20: REGISTRATION BUCKLE (NOT USED)..........................5-15 5.7.6 SP6-23: PAPER REGISTRATION EACH SPEED.......................5-16 5.7.7 SP6-27: PRESS ROLLER BUCKLE...............................................5-18 5.7.8 SP6-26 AND 37: MASTER LENGTH A3/A4 ...................................5-19 5.7.9 SP6-33 AND 34: PPR REG (EACH SPEED FORWARD & BACKWARD).5-20

5.8 MAIN MENU NO.7: MEMORY CLEAR....................................................5-23 5.8.1 SP TABLE ......................................................................................5-23 5.8.2 SP7: HOW TO CLEAR ...................................................................5-23 5.8.3 SP7-1: FACTORY SETTINGS CLEAR...........................................5-23

5.9 MAIN MENU NO.8: SYSTEM TEST........................................................5-24 5.9.1 SP TABLE ......................................................................................5-24 5.9.2 SP8-1: DOWNLOAD MAIN FIRMWARE ........................................5-24 5.9.3 SP8-2: UPLOAD MAIN FIRMWARE...............................................5-25 5.9.4 SP8-10: TEST PATTERNS ............................................................5-25 5.9.5 SP8-21: PAPER FEED TEST (15 RPM).........................................5-25 5.9.6 SP8-22: FREE RUN PAPER FEED (15 RPM) ...............................5-25

6. DETAILED SECTION DESCRIPTIONS ....................................... 6-1 6.1 MECHANISM OVERVIEW ........................................................................6-1

6.1.1 MAJOR PARTS ................................................................................6-1 6.1.2 ELECTRICAL COMPONENT LAYOUT............................................6-2

Boards ..................................................................................................6-3 Motors...................................................................................................6-3 Switches ...............................................................................................6-4 Sensors.................................................................................................6-4 Solenoids ..............................................................................................6-5 Counters ...............................................................................................6-5 Others ...................................................................................................6-5

6.1.3 DRIVE LAYOUT ...............................................................................6-6 6.2 MASTER EJECT UNIT..............................................................................6-7

6.2.1 OVERVIEW ......................................................................................6-7 Overview...............................................................................................6-7 Procedure .............................................................................................6-7

6.2.2 MASTER CLAMPER OPENING MECHANISM ................................6-8 Clamper Mechanism.............................................................................6-8 Notes ....................................................................................................6-8

6.2.3 MASTER EJECT ROLLER MECHANISM ........................................6-9 Mechanism ...........................................................................................6-9 Procedure .............................................................................................6-9

6.2.4 PRESSURE PLATE MECHANISM.................................................6-10 Mechanism .........................................................................................6-10 Procedure ...........................................................................................6-10

6.3 SCANNER UNIT......................................................................................6-11 6.3.1 OVERVIEW ....................................................................................6-11 6.3.2 SCANNER DRIVE ..........................................................................6-12

Full size mode.....................................................................................6-12 Reduction/enlargement modes ...........................................................6-12

Rev. 01/2006

xii C231/C237/C238/C248/C267 SM

6.4 IMAGE PROCESSING ............................................................................6-13 6.4.1 OVERVIEW ....................................................................................6-13 6.4.2 AUTO BACKGROUND CORRECTION..........................................6-14 6.4.3 AUTO SHADING ............................................................................6-14 6.4.4 MTF FILTER...................................................................................6-14 6.4.5 MAIN SCAN ENLARGEMENT/REDUCTION .................................6-14 6.4.6 BINARY PROCESSING .................................................................6-15 6.4.7 FINE MODE....................................................................................6-15 6.4.8 THERMAL HEAD............................................................................6-16

Specifications......................................................................................6-16 Thermal head control ..........................................................................6-16 Thermal head protection .....................................................................6-16 Remarks for Handling the Thermal Head............................................6-17

6.5 MASTER FEED.......................................................................................6-18 6.5.1 OVERVIEW ....................................................................................6-18

Procedure ...........................................................................................6-18 6.5.2 MASTER FEED MECHANISM .......................................................6-19

Mechanism .........................................................................................6-19 Procedure ...........................................................................................6-19 Notes ..................................................................................................6-19

6.5.3 CLAMPER AND TENSION ROLLER MECHANISM.......................6-20 Mechanism .........................................................................................6-20 Notes ..................................................................................................6-20

6.5.4 CUTTER MECHANISM ..................................................................6-21 6.5.5 MASTER SET COVER SENSOR...................................................6-21

6.6 DRUM......................................................................................................6-22 6.6.1 OVERVIEW ....................................................................................6-22

Procedure ...........................................................................................6-22 Notes ..................................................................................................6-22

6.6.2 DRUM DRIVE MECHANISM ..........................................................6-23 Mechanism .........................................................................................6-23 Notes ..................................................................................................6-23

6.6.3 INK SUPPLY MECHANISM............................................................6-24 Mechanism .........................................................................................6-24 Notes ..................................................................................................6-24

6.6.4 INK ROLLER MECHANISM ...........................................................6-25 Mechanism .........................................................................................6-25 Notes ..................................................................................................6-25

6.6.5 INK SUPPLY CONTROL ................................................................6-26 Mechanism .........................................................................................6-26 Notes ..................................................................................................6-26

6.6.6 DETECTION OF MASTERS ON THE DRUM ................................6-27 6.7 PAPER FEED..........................................................................................6-28

6.7.1 OVERVIEW ....................................................................................6-28 6.7.2 PAPER FEED MECHANISM ..........................................................6-29

Mechanism .........................................................................................6-29 Notes ..................................................................................................6-29

6.7.3 PAPER FEED / SEPARATION PRESSURE MECHANISM ...........6-30 6.7.4 REGISTRATION ROLLER MECHANISM.......................................6-31

Rev. 01/2006

xiii SM C231/C237/C238/C248/C267

Registration Roller Drive .....................................................................6-31 Registration Roller Up/Down Mechanism ...........................................6-31

6.7.5 PRINTING PRESSURE MECHANISM...........................................6-32 6.7.6 RE-FEEDING MECHANISM...........................................................6-32 6.7.7 PAPER TABLE MECHANISM ........................................................6-33

Table lifting/lowering ...........................................................................6-33 Mechanism .........................................................................................6-33 Notes ..................................................................................................6-33 Paper end detection............................................................................6-33 Paper size detection ...........................................................................6-33 Table side fences and side-to-side shift..............................................6-34 Side fence friction pads.......................................................................6-34

6.8 PAPER DELIVERY..................................................................................6-35 6.8.1 OVERVIEW ....................................................................................6-35 6.8.2 PAPER DELIVERY UNIT DRIVE MECHANISM.............................6-35

Mechanism .........................................................................................6-35 Notes ..................................................................................................6-35

6.8.3 PAPER SEPARATION FROM THE DRUM ....................................6-36 Air knife...............................................................................................6-36 Exit pawl air pump...............................................................................6-36

6.8.4 EXIT PAWL DRIVE MECHANISM..................................................6-37 6.9 TIMING CHART.......................................................................................6-38

6.9.1 MASTER EJECT / MASTER FEED................................................6-38 6.9.2 MASTER WRAPPING ....................................................................6-40 6.9.3 PRINTING ......................................................................................6-42

6.10 JAM DETECTION..................................................................................6-44 6.10.1 MASTER EJECT JAM (E JAM LOCATION INDICATOR) ............6-44

Picking up the used master from the drum .........................................6-44 Compressing the used master ............................................................6-44 Just after turning on the main switch...................................................6-44

6.10.2 DF JAM (P JAM LOCATION INDICATOR)...................................6-45 Feeding in the original.........................................................................6-45 Feeding out the original ......................................................................6-45 Turning on the main switch/closing the DF cover ...............................6-45

6.10.3 MASTER FEED JAM (D JAM LOCATION INDICATOR) ..............6-46 Cutting the master (master not cut).....................................................6-46 Cutting the master (cutter unit problem)..............................................6-46 Clamping the master...........................................................................6-47

6.10.4 DRUM JAM (B JAM LOCATION INDICATOR).............................6-47 Wrapping jam......................................................................................6-47 Changed B jam indicator ..................................................................6-47

6.10.5 PAPER FEED JAM (A JAM LOCATION INDICATOR) .................6-49 Paper feed ..........................................................................................6-49 Turning on the main switch/end of paper feed ....................................6-49

6.10.6 PAPER DELIVERY JAM (C JAM LOCATION INDICATOR).........6-49 Paper delivery.....................................................................................6-49

SPECIFICATIONS............................................................................. 7-1 1. GENERAL SPECIFICATIONS.....................................................................7-1

Rev. 01/2006

xiv C231/C237/C238/C248/C267 SM

DOCUMENT FEEDER C600

1. OVERALL INFORMATION .......................................................... 8-1 1.1 SPECIFICATIONS.....................................................................................8-1 1.2 MECHANICAL COMPONENT LAYOUT ...................................................8-2 1.3 ELECTRICAL COMPONENT LAYOUT.....................................................8-3 1.4 ELECTRICAL COMPONENT DESCRIPTION...........................................8-4 1.5 DRIVE LAYOUT ........................................................................................8-5

2. DETAILED SECTION DESCRIPTIONS ....................................... 8-6 2.1 ORIGINAL SIZE DETECTION...................................................................8-6 2.2 PICK-UP AND SEPARATION ...................................................................8-8 2.3 ORIGINAL TRANSPORT AND EXIT MECHANISM ..................................8-9 2.4 OVERALL ELECTRICAL CIRCUIT .........................................................8-10

3. REPLACEMENT AND ADJUSTMENT ...................................... 8-11 3.1 FEED UNIT REMOVAL ...........................................................................8-11 3.2 SEPARATION ROLLER REPLACEMENT ..............................................8-11 3.3 PICK-UP ROLLER REPLACEMENT.......................................................8-12 3.4 FEED BELT REPLACEMENT .................................................................8-12 3.5 ORIGINAL SET SENSOR REPLACEMENT............................................8-13 3.6 ORIGINAL SIZE SENSORS REPLACEMENT ........................................8-14 3.7 ORIGINAL EXIT TRAY/FRONT COVER/REAR COVER REMOVAL...............................................................................................8-15 3.8 FEED COVER OPEN SENSOR/DF OPEN SENSOR REPLACEMENT......................................................................................8-15 3.9 FEED CLUTCH/PICK-UP SOL/TRANSPORT MOTOR REPLACEMENT......................................................................................8-16 3.10 DF FEED COVER REMOVAL ...............................................................8-17 3.11 REGISTRATION SENSOR REPLACEMENT........................................8-17

xv SM C231/C237/C238/C248/C267


1. ESSENTIAL DIFFERENCES BETWEEN THE C237 AND C248

Rev. 02/2005

xvi C231/C237/C238/C248/C267 SM


1. INSTALLATION............................................................................ 1-1 1.1 INSTALLATION REQUIREMENTS ...........................................................1-1

1.1.1 OPTIMUM ENVIRONMENTAL CONDITION....................................1-1 1.1.2 ENVIRONMENTS TO AVOID...........................................................1-1 1.1.3 POWER CONNECTION...................................................................1-1 1.1.4 MINIMUM SPACE REQUIREMENTS...............................................1-2 1.1.5 DIMENSIONS...................................................................................1-2 1.1.6 MAIN BODY AND PERIPHERALS...................................................1-3 1.1.7 POWER SOCKETS FOR PERIPHERALS .......................................1-4


Accessory Check ..................................................................................1-5 Installation Procedure ...........................................................................1-6 Changing the operation panel language .............................................1-13 Date/Time Setting ...............................................................................1-13 SP Codes Setting ...............................................................................1-13

1.2.2 COLOR DRUM (OPTION) ..............................................................1-14 Accessory Check ................................................................................1-14 Installation Procedure .........................................................................1-14

1.2.3 ADF (OPTION) ...............................................................................1-15 Accessory Check ................................................................................1-15 Installation Procedure .........................................................................1-16

1.2.4 PLATEN COVER (OPTION)...........................................................1-18 Accessory Check ................................................................................1-18 Installation Procedure .........................................................................1-18

1.2.5 TAPE DISPENSER (OPTION) .......................................................1-19 Accessory Check ................................................................................1-19 Installation Procedure .........................................................................1-19

1.2.6 PRINTER UNIT VC-20 (OPTION) ..................................................1-23 Accessory Check ................................................................................1-23 Installation Procedure .........................................................................1-24

2. PREVENTIVE MAINTENANCE.................................................... 2-1 ADF.......................................................................................................2-2

3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1 3.1 GENERAL CAUTION ................................................................................3-1 3.2 COVERS ...................................................................................................3-1

3.2.1 FRONT COVER / FRONT DOOR.....................................................3-1 3.2.2 OPERATION PANEL........................................................................3-2 3.2.3 REAR COVER..................................................................................3-2 3.2.4 UPPER COVERS .............................................................................3-3

3.3 BOARDS ...................................................................................................3-4 3.3.1 MPU..................................................................................................3-4

xvii SM C231/C237/C238/C248/C267

3.3.2 PSU ..................................................................................................3-5 PSU board ............................................................................................3-5 PSU board with bracket ........................................................................3-5

3.4 SCANNER.................................................................................................3-6 3.4.1 EXPOSURE GLASS/DF EXPOSURE GLASS, SCALES .................3-6

Exposure Glass ....................................................................................3-6 DF Exposure Glass...............................................................................3-6

3.4.2 LENS BLOCK ...................................................................................3-7 3.4.3 EXPOSURE LAMP, LAMP STABILIZER BOARD ............................3-8 3.4.4 SCANNER MOTOR..........................................................................3-9 3.4.5 SCANNER HOME POSITION SENSOR ..........................................3-9 3.4.6 PLATEN COVER SENSOR............................................................3-10 3.4.7 ADJUSTING THE SCANNER POSITION.......................................3-11

Overview.............................................................................................3-11 Adjusting the Belt Contact Points for the First Scanner ......................3-12 Adjusting the Belt Contact Points for the Second Scanner .................3-13

3.5 MASTER FEED.......................................................................................3-15 3.5.1 MASTER MAKING UNIT ................................................................3-15 3.5.2 MASTER MAKING UNIT SET SWITCHES ....................................3-15 3.5.3 THERMAL HEAD............................................................................3-17

Installation...........................................................................................3-18 3.5.4 MASTER SET COVER SENSOR...................................................3-19 3.5.5 MASTER END SENSOR ................................................................3-19 3.5.6 CUTTER UNIT................................................................................3-20 3.5.7 THERMAL HEAD VOLTAGE ADJUSTMENT.................................3-21 3.5.8 MASTER END SENSOR ADJUSTMENT .......................................3-22

3.6 MASTER EJECT .....................................................................................3-23 3.6.1 MASTER EJECT UNIT ...................................................................3-23 3.6.2 MASTER EJECT ROLLERS...........................................................3-24 3.6.3 MASTER EJECT MOTOR / PRESSURE PLATE MOTOR.............3-24 3.6.4 DRUM MASTER SENSOR / MASTER EJECT SENSOR / EJECT BOX SET SENSOR............................................................3-25 3.6.5 PRESSURE PLATE HP SENSOR / PRESSURE PLATE LIMIT SENSOR..................................................................3-26 3.6.6 AIR KNIFE FAN MOTOR................................................................3-26 3.6.7 MASTER EJECT POSITION SENSOR ..........................................3-27 3.6.8 MASTER CLAMPER OPENING UNIT............................................3-27

3.7 PAPER FEED..........................................................................................3-28 3.7.1 PICK-UP ROLLER / PAPER FEED ROLLER / FRICTION PAD.....3-28 3.7.2 PAPER TABLE LOWER LIMIT SENSOR.......................................3-29 3.7.3 PAPER HEIGHT SENSOR 1 / 2.....................................................3-30 3.7.4 PAPER END SENSOR...................................................................3-31 3.7.5 PAPER TABLE MOTOR.................................................................3-32 3.7.6 PAPER FEED CLUTCH .................................................................3-32 3.7.7 PAPER SEPARATION PRESSURE ADJUSTMENT......................3-33

3.8 PRINTING ...............................................................................................3-34 3.8.1 PRESS ROLLER ............................................................................3-34 3.8.2 REGISTRATION SENSOR.............................................................3-35 3.8.3 FEED START TIMING SENSOR....................................................3-35

xviii C231/C237/C238/C248/C267 SM

3.8.4 2ND FEED TIMING SENSOR ........................................................3-36 3.8.5 REGISTRATION MOTOR ..............................................................3-37 3.8.6 REGISTRATION ROLLER .............................................................3-38 3.8.7 PRESS ROLLER RELEASE SOLENOIDS.....................................3-40 3.8.8 PRESS ROLLER RELEASE LEVER ADJUSTMENT.....................3-41 3.8.9 PRINTING PRESSURE ADJUSTMENT.........................................3-42

3.9 DRUM......................................................................................................3-43 3.9.1 PREPARATION..............................................................................3-43 3.9.2 CLOTH SCREEN............................................................................3-43

Installation...........................................................................................3-44 3.9.3 CLAMPER / METAL SCREEN .......................................................3-46

Installation...........................................................................................3-47 3.9.4 INK PUMP UNIT.............................................................................3-48 3.9.5 INK ROLLER UNIT / INK ROLLER ONE-WAY CLUTCH ...............3-49 3.9.6 DOCTOR ROLLER GAP ADJUSTMENT .......................................3-51 3.9.7 INK DETECTION ADJUSTMENT...................................................3-52

Using an Oscilloscope ........................................................................3-52 Simple Method....................................................................................3-53

3.10 PAPER DELIVERY................................................................................3-54 3.10.1 PAPER DELIVERY UNIT .............................................................3-54 3.10.2 DELIVERY BELT / PAPER EXIT SENSOR / VACUUM FAN MOTOR / PAPER DELIVERY UNIT BUSHINGS .................3-56 3.10.3 EXIT PAWL ADJUSTMENT .........................................................3-57

Clearance adjustment .........................................................................3-57 Timing adjustment...............................................................................3-58

3.11 MAIN DRIVE..........................................................................................3-60 3.11.1 MAIN MOTOR ..............................................................................3-60 3.11.2 MAIN DRIVE TIMING BELT ADJUSTMENT ................................3-63 3.11.3 MAIN MOTOR PULLEY POSITION..............................................3-64

3.12 FIRMWARE UPDATE (I/O ROM) ..........................................................3-65 3.13 SPECIAL TOOLS ............................................................................3-65

3.14 COLOR DRUM......................................................................................3-66 3.14.1 INK PUMP ADJUSTMENT ...........................................................3-66

4. TROUBLESHOOTING ................................................................. 4-1 4.1 SERVICE CALL CODES ...........................................................................4-1 4.2 ELECTRICAL COMPONENT DEFECTS ..................................................4-3

4.2.1 DRUM...............................................................................................4-3 4.2.2 PAPER EJECT .................................................................................4-4 4.2.3 PAPER FEED...................................................................................4-4 4.2.4 MAIN DRIVE.....................................................................................4-4 4.2.5 SCANNER ........................................................................................4-4 4.2.6 MASTER EJECT ..............................................................................4-5 4.2.7 MASTER MAKING UNIT ..................................................................4-5 4.2.8 OTHER.............................................................................................4-6

4.3 DIP SW, LED, VR, TP, AND FUSE TABLES.............................................4-7 4.3.1 TEST POINTS ..................................................................................4-7

MPU......................................................................................................4-7 4.3.2 POTENTIOMETERS ........................................................................4-7

xix SM C231/C237/C238/C248/C267

MPU......................................................................................................4-7 Power Supply Unit ................................................................................4-7

4.3.3 LED'S ...............................................................................................4-7 FUSES..................................................................................................4-8 MPU......................................................................................................4-8 PSU ......................................................................................................4-8

5. SERVICE PROGRAM MODE....................................................... 5-1 5.1 USING SERVICE PROGRAM MODES.....................................................5-1

5.1.1 ACCESSING SP MODES.................................................................5-1 Entering SP Mode.................................................................................5-1 Leaving SP Mode .................................................................................5-1

5.1.2 HOW TO SELECT A PROGRAM NUMBER.....................................5-2 5.1.3 MAIN MENU NUMBER LIST ............................................................5-2

5.2 1. COPY DATA..........................................................................................5-3 5.2.1 SP TABLE (SP 1-XXX) .....................................................................5-3 5.2.2 SP1-70: MAIN FIRMWARE PARTS NUMBER.................................5-3 5.2.3 SP1-80: ERROR CODE HISTORY...................................................5-3 5.2.4 SP1-83: PSU UNUSUAL VOLTAGE HISTORY ...............................5-3

5.3 2. BASIC SETTINGS.................................................................................5-4 5.3.1 SP TABLE (SP 2-XXX) .....................................................................5-4 5.3.2 SP2-6: IMAGE POSITION DISPLAY................................................5-5 5.3.3 SP2-33: RE-FEEDING SETTING .....................................................5-5 5.3.4 SP2-40, 2-55: THERMAL HEAD ENERGY CONTROL....................5-5 5.3.5 SP2-60: BOLD MODE: LETTER MODE ONLY ................................5-5 5.3.6 SP2-61: T/H SWING MODE .............................................................5-5 5.3.7 SP2-62: T/H SWING AMOUNT ........................................................5-6 5.3.8 SP2-80: AUTO OFF AT UNUSUAL VOLTAGE ................................5-6 5.3.9 SP2-95: PAPER TABLE STANDBY POSITION. ..............................5-6 5.3.10 SP2-100: MAKE MASTER WITHOUT PRINT ................................5-6

5.4 3. SYSTEM SETTINGS.............................................................................5-7 5.4.1 SP TABLE (SP 3-XXX) .....................................................................5-7 5.4.2 SP3-1: INPUT THE PRESENT TIME ...............................................5-7 5.4.3 SP3-4: INPUT INSTALLATION DATE..............................................5-8

5.5 4. INPUT MODE........................................................................................5-9 5.5.1 SP TABLE (SP 4-XXX) .....................................................................5-9

5.6 5. OUTPUT MODE ..................................................................................5-10 5.6.1 SP TABLE (SP 5-XXX) ...................................................................5-10

5.7 6. ADJUSTMENT ....................................................................................5-11 5.7.1 SP TABLE (SP 6-XXX) ...................................................................5-11 5.7.2 SP6-10: MASTER WRITING SPEED .............................................5-13 5.7.3 SP6-21: PAPER REGIST POSITION .............................................5-14 5.7.4 SP6-5: SCANNING SPEED PLATEN AND SP6-6: SCANNING SPEED ADF MODE.................................................5-14 5.7.5 SP6-3: SCANNING START POSITION PLATEN AND SP6-4: SCANNING START POSITION - ADF................................5-14 5.7.6 SP6-1: MAIN SCAN POSITION PLATEN AND SP6-2: MAIN SCAN POSITION - ADF ...........................................5-15 5.7.7 IMAGE ADJUSTMENT (SP6-10, -21, -5, -3, AND -1).....................5-15

xx C231/C237/C238/C248/C267 SM

5.7.8 SP6-20: REGISTRATION BUCKLE................................................5-15 5.7.9 SP6-32 TO 37: MTF FILTER ..........................................................5-16 5.7.10 SP6-40: INK DETECTION ADJUSTMENT ...................................5-16 5.7.11 SP6-100 TO 104: PAPER REGISTRATION - EACH SPEED.......5-17

5.8 7. MEMORY CLEAR ...............................................................................5-18 5.8.1 SP TABLE (SP 7-XXX) ...................................................................5-18 5.8.2 SP7-1: FACTORY SETTINGS CLEAR...........................................5-18 5.8.3 SP7-3: TOTAL COUNTER CLEAR.................................................5-18

5.9 8. SYSTEM TEST....................................................................................5-19 5.9.1 SP TABLE (SP 8-XXX) ...................................................................5-19 5.9.2 SP8-1. DOWNLOAD MAIN FIRMWARE ........................................5-20 5.9.3 SP8-2: UPLOAD MAIN FIRMWARE...............................................5-20 5.9.4 SP8-9 DATA PRINTOUT POWER FAILURE ..............................5-21 5.9.5 SP8-10: TEST PATTERNS ............................................................5-22 5.9.6 SP8-21: PAPER FEED TEST (30 RPM).........................................5-22 5.9.7 SP8-22: FREE RUN PAPER FEED (30 RPM) ...............................5-22

5.10 USER TOOLS .......................................................................................5-23 5.10.1 MAIN MENU NUMBER LIST ........................................................5-23 5.10.2 USER TOOL LISTS......................................................................5-23

1. Counter.............................................................................................5-23 2. System..............................................................................................5-23 3. Set Operation Mode..........................................................................5-24 4. Initial Settings ...................................................................................5-24 5. Mode Settings...................................................................................5-25 6. Administrator Tools...........................................................................5-25 7. Online Settings .................................................................................5-25

6. DETAILED SECTION DESCRIPTIONS ....................................... 6-1 6.1 MECHANICAL COMPONENT LAYOUT ...................................................6-1 6.2 ELECTRICAL COMPONENT LAYOUT.....................................................6-2

6.2.1 MAIN BODY .....................................................................................6-2 Boards ..................................................................................................6-3 Motors...................................................................................................6-3 Solenoids ..............................................................................................6-3 Switches ...............................................................................................6-3 Sensors.................................................................................................6-4 Others ...................................................................................................6-4

6.3 DRIVE LAYOUT ........................................................................................6-5 6.4 SCANNER AND OPTICS ..........................................................................6-6

6.4.1 SCANNER OVERVIEW....................................................................6-6 Lamp Stabilizer Fuse ............................................................................6-6

6.4.2 SCANNER DRIVE ............................................................................6-7 6.5 IMAGE PROCESSING ..............................................................................6-8

6.5.1 IMAGE PROCESSING FLOW..........................................................6-8 Shading Correction: ..............................................................................6-8 Reduce / Enlarge: .................................................................................6-8 Filtering: ................................................................................................6-8 Gamma Correction:...............................................................................6-8 Grayscale Processing: ..........................................................................6-8

xxi SM C231/C237/C238/C248/C267

6.5.2 THERMAL HEAD..............................................................................6-9

SPECIFICATIONS............................................................................. 6-9 Thermal Head Control...........................................................................6-9 Thermal Head Protection ......................................................................6-9

6.6 MASTER EJECT UNIT............................................................................6-10 6.6.1 OVERVIEW ....................................................................................6-10

Procedure ...........................................................................................6-10 6.6.2 MASTER EJECT UNIT OPEN MECHANISM .................................6-11 6.6.3 MASTER CLAMPER OPENING MECHANISM ..............................6-12

Clamper Mechanism...........................................................................6-12 6.6.4 MASTER EJECT ROLLER MECHANISM ......................................6-13

Mechanism .........................................................................................6-13 6.6.5 PRESSURE PLATE MECHANISM.................................................6-14

Mechanism .........................................................................................6-14 Procedure ...........................................................................................6-14

6.7 MASTER FEED.......................................................................................6-15 6.7.1 OVERVIEW ....................................................................................6-15

Procedure ...........................................................................................6-15 6.7.2 MASTER FEED MECHANISM .......................................................6-16

Mechanism .........................................................................................6-16 Procedure ...........................................................................................6-16

6.7.3 CLAMPER AND TENSION ROLLER MECHANISM.......................6-17 Mechanism .........................................................................................6-18 Procedure ...........................................................................................6-18

6.7.4 CUTTER MECHANISM ..................................................................6-19 6.7.5 MASTER SET COVER SENSOR...................................................6-20 6.7.6 MASTER MAKING UNIT SLIDE-OUT MECHANISM .....................6-21 6.7.7 MASTER SET MECHANISM..........................................................6-22

6.8 DRUM......................................................................................................6-23 6.8.1 OVERVIEW ....................................................................................6-23

Procedure ...........................................................................................6-23 6.8.2 DRUM DRIVE MECHANISM ..........................................................6-24

Mechanism .........................................................................................6-24 6.8.3 INK SUPPLY MECHANISM............................................................6-25 6.8.4 INK ROLLER MECHANISM ...........................................................6-26 6.8.5 INK SUPPLY CONTROL ................................................................6-27

Mechanism .........................................................................................6-27 Automatic Ink Supply for a New Drum ................................................6-28

6.8.6 DETECTION OF MASTERS ON THE DRUM ................................6-29 6.8.7 METAL SCREEN............................................................................6-30 6.8.8 DRUM TYPE DETECTION.............................................................6-31

Black drum..........................................................................................6-31 Color drum ..........................................................................................6-31

6.9 PAPER FEED..........................................................................................6-32 6.9.1 OVERALL .......................................................................................6-32 6.9.2 PAPER FEED MECHANISM ..........................................................6-33 6.9.3 PAPER FEED/SEPARATION PRESSURE ADJUSTMENT MECHANISM.........................................................6-34

xxii C231/C237/C238/C248/C267 SM

6.9.4 SIDE EDGE PAPER PRESS PLATE MECHANISM.......................6-35 6.9.5 REGISTRATION ROLLER MECHANISM.......................................6-36 6.9.6 PAPER FEED RETRY MECHANISM.............................................6-36 6.9.7 REGISTRATION ROLLER UP/DOWN MECHANISM ....................6-37 6.9.8 REGISTRATION SENSOR CLEANING .........................................6-38 6.9.9 PRINTING PRESSURE MECHANISM...........................................6-39 6.9.10 PAPER TABLE MECHANISM ......................................................6-40

Table Up and Down Mechanism.........................................................6-40 Paper End Detection Mechanism .......................................................6-41 Paper Size Detection ..........................................................................6-41

6.9.11 PAPER TABLE SIDE FENCE MECHANISM................................6-42 Paper Table Side-to-Side Shift Mechanism ........................................6-42 Side Fence Friction Pads....................................................................6-43

6.10 PAPER DELIVERY................................................................................6-44 6.10.1 OVERALL .....................................................................................6-44

Procedure ...........................................................................................6-44 6.10.2 PAPER DELIVERY UNIT DRIVE MECHANISM...........................6-45

Mechanism .........................................................................................6-45 6.10.3 PAPER SEPARATION FROM DRUM ..........................................6-46

Air knife...............................................................................................6-46 6.10.4 EXIT PAWL DRIVE MECHANISM................................................6-47 6.10.5 SIDE PLATE GUIDE.....................................................................6-49

6.11 ABNORMAL VOLTAGE PROTECTION ................................................6-50 Momentary voltage drop .....................................................................6-50 Low voltage (less than 150V)..............................................................6-50 High voltage........................................................................................6-50 Over voltage (More than AC400V)......................................................6-50 General Notes on this Feature............................................................6-51

6.12 ERROR DETECTION............................................................................6-52 6.12.1 MASTER EJECT JAM (E JAM LOCATION INDICATOR) ............6-52

Picking up the used master from the drum .........................................6-52 Compressing the used master ............................................................6-52 Just after turning on the main switch...................................................6-52

6.12.2 ADF JAM (P JAM LOCATION INDICATOR) ................................6-53 Feeding in the original (ADF) ..............................................................6-53 Just after turning on the main switch...................................................6-53

6.12.3 MASTER FEED JAM (D JAM LOCATION INDICATOR) ..............6-54 Cutting the master...............................................................................6-54 Clamping the master...........................................................................6-54

6.12.4 PAPER FEED JAM (A JAM LOCATION INDICATOR + ) + Z) .....6-55 Paper feed ..........................................................................................6-55

6.12.5 PAPER DELIVERY JAM (C JAM LOCATION INDICATO

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Manual Service ricoh C238-5430 Duplicator