Ricoh C274 Service Manual
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Ricoh C274 Service Manual

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CÓPIA NÃO CONTROLADA
Need Machine Image for Cover
C274

SERVICE MANUAL

00xxxxMIU
CÓPIA NÃO CONTROLADA

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Summary of Contents for Ricoh C274

  • Page 1: Service Manual

    CÓPIA NÃO CONTROLADA Need Machine Image for Cover C274 SERVICE MANUAL 00xxxxMIU CÓPIA NÃO CONTROLADA...
  • Page 2 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 3 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 4 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 5 CÓPIA NÃO CONTROLADA C274 SERVICE MANUAL 00xxxxMIU CÓPIA NÃO CONTROLADA...
  • Page 6 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 7 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 Americas Corporation and its member companies. NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY FASHION AND DISTRIBUTED WITHOUT THE PRIOR PERMISSION OF RICOH AMERICAS CORPORATION.
  • Page 8 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 9 Ricoh Technical Training Program. Untrained 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 Americas Corporation CÓPIA NÃO CONTROLADA...
  • Page 10 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 11 CÓPIA NÃO CONTROLADA LEGEND PRODUCT COMPANY CODE GESTETNER LANIER RICOH SAVIN C274-77 DX 2330 LDD745 DX 2330 C274-92 DX 2430 LDD735 DX 2430 DOCUMENTATION HISTORY REV. NO. DATE COMMENTS 5/2009 Original Printing CÓPIA NÃO CONTROLADA...
  • Page 12 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 13: Table Of Contents

    CÓPIA NÃO CONTROLADA C274 TABLE OF CONTENTS 1. PRODUCT INFORMATION............1-1 1.1 SPECIFICATIONS ..................1-1 1.2 MECHANISM OVERVIEW ................. 1-2 1.2.1 COMPONENT LAYOUT ..............1-2 1.2.2 ELECTRICAL COMPONENT LAYOUT ..........1-3 1.2.3 DRIVE LAYOUT................1-7 1.3 GUIDANCE FOR THOSE WHO ARE FAMILIAR WITH PREDECESSOR PRODUCTS.....................
  • Page 14 4.6.4 MASTER END SENSOR ADJUSTMENT ........4-20 4.7 MASTER EJECT..................4-21 4.7.1 MASTER EJECT UNIT ..............4-21 4.7.2 MASTER EJECT ROLLERS ............4-21 4.8 PAPER FEED ..................4-22 4.8.1 PAPER FEED ROLLER / FRICTION PAD........4-22 4.8.2 PAPER FEED PRESSURE ADJUSTMENT........4-22 C274 CÓPIA NÃO CONTROLADA...
  • Page 15 5.1.2 USING SERVICE PROGRAM MODES ..........5-1 Entering SP Mode ................5-1 Leaving SP Mode ................. 5-1 5.1.3 USING THE SP MODE ..............5-1 6. TROUBLESHOOTING ..............6-1 6.1 SERVICE CALL CONDITIONS ..............6-1 6.2 ELECTRICAL COMPONENT DEFECTS ........... 6-2 C274 CÓPIA NÃO CONTROLADA...
  • Page 16 CÓPIA NÃO CONTROLADA 6.3 FUSE, LED, VR, DIP-SW, AND TP TABLES..........6-3 C274 CÓPIA NÃO CONTROLADA...

  • Page 17: Read This First

    CÓPIA NÃO CONTROLADA Read This First Important Safety Notices Responsibilities of the Customer Engineer Customer Engineer Maintenance shall be done only by trained customer engineers who have completed service training for the machine and all optional devices designed for use with the machine. Reference Material for Maintenance Maintenance shall be done using the special tools and procedures prescribed for maintenance of the machine described in the reference materials (service manuals,...
  • Page 18 CÓPIA NÃO CONTROLADA and other devices. To prevent electrical shock, switch the machine off, wait for a few seconds, then unplug the machine from the power source. Before you do any checks or adjustments after turning the machine off, work carefully to avoid injury.
  • Page 19 CÓPIA NÃO CONTROLADA Modification or removal of a safety device (fuse, switch, etc.) could lead to a fire and personal injury. Always test the operation of the machine to ensure that it is operating normally and safely after removal and replacement of any safety device.
  • Page 20 CÓPIA NÃO CONTROLADA Check the length of the power cord between the machine and power supply. Make sure the power cord is not coiled or wrapped around any object such as a table leg. Coiling the power cord can cause excessive heat to build up and could cause a fire.
  • Page 21 CÓPIA NÃO CONTROLADA Safety Instructions for this Machine Prevention of Physical Injury Before disassembling or assembling parts of the machine and peripherals, make sure that the machine and peripheral power cords are unplugged. The plug should be near the machine and easily accessible. 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.
  • Page 22 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 23 CÓPIA NÃO CONTROLADA PRODUCT INFORMATION APPENDIX: SPECIFICATIONS INSTALLATION APPENDIX: MAINTENANCE TABLES PREVENTIVE MAINTENANCE APPENDIX: SERVICE CALL CONDITION REPLACEMENT AND ADJUSTMENT APPENDIX: ELECTRICAL COMPONENT DEFECTS SYSTEM MAINTENANCE REFERENCE APPENDIX: SP MODE TABLES TROUBLESHOOTING CÓPIA NÃO CONTROLADA...
  • Page 24 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 25: Product Information

    CÓPIA NÃO CONTROLADA PRODUCT INFORMATION R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 26 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 27: Specifications

    CÓPIA NÃO CONTROLADA Specifications 1. PRODUCT INFORMATION 1.1 SPECIFICATIONS See "Appendices" for the following information: General specifications C274 CÓPIA NÃO CONTROLADA...

  • Page 28: Mechanism Overview

    17. Master eject rollers 7. Paper table 18. Master eject box 8. Registration rollers 19. 2nd feed roller 9. Doctor roller 20. CIS (Contact Image Sensor) 10. Ink roller 21. 1st feed rollers 11. Press roller C274 CÓPIA NÃO CONTROLADA...

  • Page 29: Electrical Component Layout

    CÓPIA NÃO CONTROLADA Mechanism Overview 1.2.2 ELECTRICAL COMPONENT LAYOUT C274 CÓPIA NÃO CONTROLADA...
  • Page 30 Clamper Motor Opens or closes the master clamper on the drum. Rotates the drum, paper feed roller and transport Main Motor belts. Feeds the paper to align it with the master on the Registration Motor drum. C274 CÓPIA NÃO CONTROLADA...
  • Page 31 Detects when the cutter is at the home position. Master Set Cover Sensor Checks if the master set cover is properly set. Master End Sensor Detects when the master making unit runs out of master roll. C274 CÓPIA NÃO CONTROLADA...
  • Page 32 This sensor reads and converts the light reflected (CIS) from the document into an analog video signal. Thermal Head Burns the image onto the master. Paper Feed Clutch Transmits main motor drive to the paper feed rollers at the appropriate time. C274 CÓPIA NÃO CONTROLADA...

  • Page 33: Drive Layout

    CÓPIA NÃO CONTROLADA Mechanism Overview 1.2.3 DRIVE LAYOUT Master eject motor Scanner motor Pressure plate motor Clamper motor Main motor Registration motor Master feed motor C274 CÓPIA NÃO CONTROLADA...

  • Page 34: Guidance For Those Who Are Familiar With Predecessor Products

    1.3 GUIDANCE FOR THOSE WHO ARE FAMILIAR WITH PREDECESSOR PRODUCTS Machine C274 is a successor model to Machine C261. If you have experience with the predecessor products, the following information will be of help when you read this manual. Different Points from Predecessor Products...

  • Page 35: Installation

    CÓPIA NÃO CONTROLADA INSTALLATION R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 36 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 37: Installation Requirements

    Make sure that the wall outlet is near the machine and easily accessible. Make sure the plug is firmly inserted in the outlet. Avoid multi-wiring Do not pinch the power cord. 2.1.4 MACHINE ACCESS Place the machine near a power source, providing minimum clearance as shown below. C274 CÓPIA NÃO CONTROLADA...

  • Page 38: Dimensions

    CÓPIA NÃO CONTROLADA Installation Requirements Dimensions C274 CÓPIA NÃO CONTROLADA...

  • Page 39: Installation Procedure

    5. Model Name Plate (C274-77) 1 set 6. Paper Table 1 set 7. Paper Delivery Table 1 set 8. Easy Operation Guide 9. Safety Information (C274-93 and C274-94 only) 10. Bundled Items List (C274-76 and C274-78 only) C274 CÓPIA NÃO CONTROLADA...

  • Page 40: Installation Procedure

    To avoid serious injury, do not connect the power plug to the machine until you are instructed to do so. Unpack the machine and remove all the wrapping. Remove all filament tape and string securing the covers and units as shown above. C274 CÓPIA NÃO CONTROLADA...
  • Page 41 To remove the rear tape, pull the portion shown in the diagram toward the front of the machine.These tapes were also used in the Titanium2 (C261). Open the right side cover, and take out the accessory bag [D]. Insert both spools into a new master roll. C274 CÓPIA NÃO CONTROLADA...
  • Page 42 The arrows [E] indicate the correct position of the master leading edge. The leading edge of the master does not enter the interior of the master making unit, because the part at the arrows [E] is convex. C274 CÓPIA NÃO CONTROLADA...
  • Page 43 Close the master making unit cover [F] using both hands until it clicks into place. Close the right side cover. 10. Open the front door. 11. Release the ink holder lock lever [G] and pull out the ink holder [H]. 12. Insert a new ink cartridge. C274 CÓPIA NÃO CONTROLADA...
  • Page 44 Two side fence friction pads are included as accessories. They are not used normally, but if paper multi-feed frequently occurs or thin paper is used, the side fence friction pads can be installed to apply stopping pressure to the paper. C274 CÓPIA NÃO CONTROLADA...
  • Page 45 15. Attach the side and end fences, as shown. ( x 3) 16. Install the paper delivery table. ( x 2) 17. Release the paper feed side plate lock levers [K] and adjust the side plates to match the paper size. C274 CÓPIA NÃO CONTROLADA...
  • Page 46 19. Shift the paper feed tray adjustment lever [I] up to the paper feeding position. 20. Adjust the side and end fences of the paper delivery table to match the paper size. 21. Attach the original table [L]. C274 2-10 CÓPIA NÃO CONTROLADA...
  • Page 47 22. Firmly insert the power plug in the outlet. 23. Turn on the main switch. 24. Press the clear/stop key while holding down the 0 key, to supply ink to the drum. 25. Make some test copies. 2-11 C274 CÓPIA NÃO CONTROLADA...

  • Page 48: Optional Installation

    Attach a color indicator decal to the drum case. The decal must be the same color as the ink in use. Remove the drum unit. Leave the master wrapped around the removed drum to protect the drum from dust C274 2-12 CÓPIA NÃO CONTROLADA...

  • Page 49: Printer Unit Vc-20 And Interface Board Type 20

    Check the quantity and condition of the accessories in the box against the following list: Description Q'ty 1. Interface Board 2. Interface Cable 3. Bracket 4. Screw M3x6 Accessory Check (Printer Unit VC-20) Check the quantity and condition of the accessories in the box against the following list: 2-13 C274 CÓPIA NÃO CONTROLADA...

  • Page 50: Installation Procedure

    Remove the rear cover ( Replacement and Adjustment – Covers / Boards - Rear Cover) Remove the bracket [A] ( x1). You do not need this bracket and its screws any more. C274 2-14 CÓPIA NÃO CONTROLADA...
  • Page 51 Connect the connector [D] to the socket on the right side of the board [E]. Make sure that the connector is securely connected to the socket. Attach the bracket assembly [F] to the same place that the bracket [A] (Step 1) was installed (1 screw). 2-15 C274 CÓPIA NÃO CONTROLADA...
  • Page 52 Connect the connector [O] to CN102 on the MPU [N]. Make sure that the connector is securely connected to CN102. Clamp the harness to the five places shown (#1-5) around the MPU ( x5). Do not connect the connector [M] anywhere. Leave it unconnected. C274 2-16 CÓPIA NÃO CONTROLADA...

  • Page 53: Preventive Maintenance

    CÓPIA NÃO CONTROLADA PREVENTIVE MAINTENANCE R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 54 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 55: Maintenance Tables

    CÓPIA NÃO CONTROLADA Maintenance Tables 3. PREVENTIVE MAINTENANCE 3.1 MAINTENANCE TABLES See "Appendices" for the following information: Maintenance table C274 CÓPIA NÃO CONTROLADA...
  • Page 56 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 57: Replacement And Adjustment

    CÓPIA NÃO CONTROLADA REPLACEMENT AND ADJUSTMENT R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 58 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 59: General Caution

    This manual uses several symbols. The meaning of those symbols are as follows: This manual uses several symbols. The meaning of those symbols are as follows: : See or refer to, : screw, : connector, : E-ring, : clip, : clamp C274 CÓPIA NÃO CONTROLADA...

  • Page 60: Special Tools

    CÓPIA NÃO CONTROLADA Special Tools 4.2 SPECIAL TOOLS The following are the special tools used for service. Part Number Description Q’ty A0699502 Alvania 2 Grease C274 CÓPIA NÃO CONTROLADA...

  • Page 61: Image Adjustment

    If there is an image problem during copying but the test print is OK, the problem could be in the scanner unit. The print paper should be B4 or LG size when using this test pattern. C274 CÓPIA NÃO CONTROLADA...

  • Page 62: Dip Switches

    Drum Size Selection OFF: B4 ON: inch Size in Metric or Inch OFF: mm ON: Enabled Panel Beeper OFF: Disabled (Default) Not used DIPSW103 No.1 to 4 – Scanning 1 to 4 Scanning Speed Adjustment Speed Adjustment) C274 CÓPIA NÃO CONTROLADA...

  • Page 63: Dipsw103 No.5 To 8 - Master Feeding Speed Adjustment

    The black area should be 300 ± 0.5 mm in length. If it is out of the standard, then adjust DIPSW103-5 to 103-8. {(300 – Value) / 300} x 100 = ± X.X % DIPSW103-5 DIPSW103-6 DIPSW103-7 DIPSW103-8 difference +1.4% +1.2% +1.0% +0.8% +0.6% +0.4% +0.2% C274 CÓPIA NÃO CONTROLADA...

  • Page 64: Dipsw101 No.1 To 4 - Paper Registration Position Adjustment

    Adjustment standard: ±1.0 mm The print position moves as shown below. The image position on a trial print, which is automatically made after making a master, tends to vary. Do not use the trial print when making adjustments. C274 CÓPIA NÃO CONTROLADA...

  • Page 65: Dipsw101 No.5 To 8 - Master Writing Position Adjustment

    4.3.5 DIPSW101 NO.5 TO 8 – MASTER WRITING POSITION ADJUSTMENT Purpose: To match the printing side-to-side on the print paper with that on the original. Adjustment standard: ±1.0 mm The master writing position moves as shown below. C274 CÓPIA NÃO CONTROLADA...
  • Page 66 Do not use the trial print when making adjustments. DIPSW101-5 DIPSW101-6 DIPSW101-7 DIPSW101-8 Difference Difference -14dot -1.185mm -12dot -1.016mm -10dot -0.847mm -8dot -0.677mm -6dot -0.508mm -4dot -0.339mm -2dot -0.169mm +14dot +1.185mm +12dot +1.016mm +10dot +0.847mm +8dot +0.677mm C274 CÓPIA NÃO CONTROLADA...

  • Page 67: Dipsw102 No.1 To 3 - Thermal Head Energy Control

    Purpose: To adjust the sub-scan magnification for scanning by changing the speed of the scanner motor. Inputting a positive value stretches the image on the master. Inputting a negative value shrinks it. Adjustment standard: Within 100 ± 0.5 % C274 CÓPIA NÃO CONTROLADA...
  • Page 68 The image position on a trial print, which is automatically made after making a master, tends to vary. Do not use the trial print when making adjustments. DIPSW103-1 DIPSW103-2 DIPSW103-3 DIPSW103-4 Difference +1.4% +1.2% +1.0% +0.8% +0.6% +0.4% +0.2% -1.4% -1.2% -1.0% -0.8% -0.6% -0.4% -0.2% C274 4-10 CÓPIA NÃO CONTROLADA...

  • Page 69: Covers And Boards

    4.4 COVERS AND BOARDS 4.4.1 FRONT COVER, OPERATION PANEL [A]: Panel ( x 4, x 2) [B]: Front cover ( x 6) [C]: Front door ( x 4) 4.4.2 REAR COVER [A]: Rear cover ( x 5) 4-11 C274 CÓPIA NÃO CONTROLADA...

  • Page 70: Mpu

    Adjust the master end sensor after installing the new MPU. ( Master Feed - Master End Sensor Adjustment) Adjust the ink detection after installing the new MPU. ( Drum - Ink Detection Adjustment) Ensure that the EPROM on the MPU contains the correct firmware. C274 4-12 CÓPIA NÃO CONTROLADA...

  • Page 71: Psu

    [A]: PSU ( x 6, x 3) When the PSU is replaced, the thermal head voltage returns to the default. Adjust the thermal head voltage after installing the new board. ( Master Feed - Thermal Head Voltage Adjustment) 4-13 C274 CÓPIA NÃO CONTROLADA...

  • Page 72: Scanner

    CÓPIA NÃO CONTROLADA Scanner 4.5 SCANNER 4.5.1 COVERS [A]: Right side cover ( x 1) [B]: Scanner cover ( x 4) 4.5.2 1ST AND 2ND FEED ROLLERS, CIS (CONTACT IMAGE SENSOR) C274 4-14 CÓPIA NÃO CONTROLADA...

  • Page 73: Document Sensor

    [C]: CIS ( x 1) [D]: 1st feed roller ( x 3) [E]: 2nd feed roller ( x 3) 4.5.3 DOCUMENT SENSOR [A]: Upper guide plate ( x 2) [B]: Document sensor ( x 1) 4-15 C274 CÓPIA NÃO CONTROLADA...

  • Page 74: Scanner Motor

    CÓPIA NÃO CONTROLADA Scanner 4.5.4 SCANNER MOTOR [A]: Scanner unit ( x 5, x 3) [B]: Scanner motor ( x 2) C274 4-16 CÓPIA NÃO CONTROLADA...

  • Page 75: Master Feed

    4.6.1 MASTER MAKING UNIT [A]: Master making unit ( x 2, x 5) 4.6.2 THERMAL HEAD Master making unit ( Master Making Unit) [A]: Open the platen roller unit. [B]: Thermal head upper cover ( x 2) 4-17 C274 CÓPIA NÃO CONTROLADA...

  • Page 76: Installation

    Make sure to set the front side (the paper table side) first. Make sure that all protrusions are properly fitted into the springs. Adjust the thermal head voltage after installing the new thermal head. ( Thermal Head Voltage Adjustment) C274 4-18 CÓPIA NÃO CONTROLADA...

  • Page 77: Thermal Head Voltage Adjustment

    Select SP2-41 (Thermal head signal output). Press the # key. Power is continuously supplied to the thermal head, which could damage the thermal head, so press the clear/stop key if you cannot finish the adjustment quickly. 4-19 C274 CÓPIA NÃO CONTROLADA...

  • Page 78: Master End Sensor Adjustment

    Place the core inside the master making unit, and close the master making cover. Connect the power plug, and turn on the main switch. Access SP6-41 Turn VR102 [A] on the MPU board until the display is 2.0 ± 0.1 volts. C274 4-20 CÓPIA NÃO CONTROLADA...

  • Page 79: Master Eject

    3) 4.6.6 MASTER EJECT ROLLERS Master eject unit ( Master Eject Unit) [A]: Gears ( x 1) [B]: Lower master eject roller ( x 2) [C]: Upper master eject roller ( x 2, spring) 4-21 C274 CÓPIA NÃO CONTROLADA...

  • Page 80: Paper Feed

    The position of the spring can be changed in order to change the amount of pressure exerted by the paper tray adjustment plate. This adjustment can be done: When feeding special paper (especially thick paper and thin paper) When the customer is experiencing feed problems. C274 4-22 CÓPIA NÃO CONTROLADA...

  • Page 81: Paper Separation Pressure Adjustment

    The position of the screw can be changed in order to change the amount of pressure exerted by the friction pad. This adjustment can be done: When feeding special paper, especially thick paper When the customer is experiencing feed problems. 4-23 C274 CÓPIA NÃO CONTROLADA...
  • Page 82 Move the separation pressure slider [A] to position 1 (right end). Increase the paper separation pressure: Move up the screws [B] Decrease the paper separation pressure: Move down the screws [B] Default position: lowest position Adjustment Procedure C274 4-24 CÓPIA NÃO CONTROLADA...
  • Page 83 By loosening then moving the screws [B] up or down, the spring [E], which applies pressure to the friction pad block [F], moves up or down. The default position of the screw [B] is at the lowest position. 4-25 C274 CÓPIA NÃO CONTROLADA...

  • Page 84: Printing

    Remove the drum [A]: Press roller ( x 1) The bearings on the rear and front differ. During installation, ensure that the bearing with the stopper [B] is positioned towards the rear of the machine. C274 4-26 CÓPIA NÃO CONTROLADA...

  • Page 85: Paper Registration Roller

    Cover / Boards - Rear Cover) MPU ( Cover / Boards - MPU) [A]: Registration motor (spring, x 3, belt) [B]: Gear [C]: Bearing ( x 2) [D]: Bearing ( x 2) [E]: Slider bracket ( x 2) 4-27 C274 CÓPIA NÃO CONTROLADA...

  • Page 86: Press Roller Release Lever Adjustment

    Purpose: To maintain the correct clearance between the press roller arms and press roller lock levers. This ensures that the press roller is correctly released and pressed against the drum when the press roller release solenoid is energized. Standard: 0.7 to 1.2 mm C274 4-28 CÓPIA NÃO CONTROLADA...

  • Page 87: Printing Pressure Adjustment

    If it is not correct, adjust the position of the press roller lock lever after loosening the two screws [E]. Repeat steps 2 and 3 for the front side. 4.8.4 PRINTING PRESSURE ADJUSTMENT Purpose: To make better print results without decreasing the run length. Standard: Within 10 ± 0.5 mm 4-29 C274 CÓPIA NÃO CONTROLADA...
  • Page 88 Paper delivery unit ( Paper Delivery – Paper Delivery Unit) Adjust the distance [A] to 10 ± 0.5 mm by turning the adjusting bolt [B]. Repeat the same procedure for the printing pressure spring at the non-operation side. C274 4-30 CÓPIA NÃO CONTROLADA...

  • Page 89: Drum

    4.9.2 CLOTH SCREEN Remove the drum Remove the drum upper bracket ( x 4). Release the stopper [A], then rotate the drum until the master clamper faces top. Remove the cloth screen [B] ( x 4). 4-31 C274 CÓPIA NÃO CONTROLADA...

  • Page 90: Installation

    CÓPIA NÃO CONTROLADA Drum Installation C274 4-32 CÓPIA NÃO CONTROLADA...
  • Page 91 [C]. Adjust the stay so that it is parallel to the master clamper, then tighten the screws. Make sure that the cloth screen is not wrinkled while spreading it around the drum. 4-33 C274 CÓPIA NÃO CONTROLADA...

  • Page 92: Clamper / Metal Screen

    Use a cloth dampened with water to clean the inside of the clamping plate [C]. Never use alcohol or other solvents, or the clamping force of the magnet will be weakened. [D]: Tape (do not lose it) [E]: Metal screen ( x 12) C274 4-34 CÓPIA NÃO CONTROLADA...

  • Page 93: Installation

    Make sure that the gap between the drum flanges and the screen is 0.3 mm or less, as shown above. (The two holes [A] on the trailing side are round holes and the other holes are long 4-35 C274 CÓPIA NÃO CONTROLADA...

  • Page 94: Ink Pump Unit

    Clamper / Metal screen ( Clamper / Metal Screen) [A]: Ink pump unit ( x 1, x 2) 4.9.5 INK ROLLER UNIT / INK ROLLER ONE WAY CLUTCH Wipe off the ink around the ink roller beforehand (use SP3-6). C274 4-36 CÓPIA NÃO CONTROLADA...

  • Page 95: Doctor Roller Gap Adjustment

    [H]: Ink roller unit [I]: Ink roller one-way clutch 4.9.6 DOCTOR ROLLER GAP ADJUSTMENT Purpose: To control the ink thickness around the ink roller. Standard: A 0.07-mm gauge passes, but a 0.09-mm gauge does not. Tools: Thickness gauge 4-37 C274 CÓPIA NÃO CONTROLADA...
  • Page 96 If the gap is out of the standard, loosen the screw [B] and adjust the gap by turning the cam bushing [C] for the front and for the rear. Make sure to repeat the adjustment for both ends of the rollers. C274 4-38 CÓPIA NÃO CONTROLADA...

  • Page 97: Ink Detection Adjustment

    Covers / Boards – Rear Cover) Access SP6-40. Turn VR101 [A] on the MPU board until the display is “4.0 ± 0.2μ” (4.0 ± 0.2μs). When the drum has ink inside, the machine displays “----“. 4-39 C274 CÓPIA NÃO CONTROLADA...

  • Page 98: Paper Delivery

    Paper Delivery 4.10 PAPER DELIVERY 4.10.1 PAPER DELIVERY UNIT Rear cover ( Covers / Boards - Rear Cover) [A]: Paper delivery cover ( x 5) [B]: Paper delivery unit ( x 2, x 2, x 1) C274 4-40 CÓPIA NÃO CONTROLADA...

  • Page 99: Delivery Belt / Paper Exit Sensor

    Clearance adjustment You must set the drum to home position before you do this adjustment. Standard: Within 1.15 ± 0.15 mm Front cover ( Covers / Boards - Front Cover, Operation Panel) 4-41 C274 CÓPIA NÃO CONTROLADA...

  • Page 100: Timing Adjustment

    If the clearance is not correct, adjust the clearance by turning the bolt [F]. Reposition the bracket [C] and tighten the screws [A] and [B]. Do the timing adjustment (see the next section). Timing Adjustment Standard: 0 or less than 0.5 mm C274 4-42 CÓPIA NÃO CONTROLADA...
  • Page 101 Do this after the clearance adjustment (the procedure is on the next page). Turn the drum manually until the recess in the drum drive gear meets the positioning hole [A] in the bracket, as shown. 4-43 C274 CÓPIA NÃO CONTROLADA...
  • Page 102 Re-tighten the two screws while pushing the cam follower against the cam face. Make sure that the gap [F] is 0 or less than 0.5 mm. Do not push the cam followers too strongly against the cam. Re-position the bracket [D] and tighten the screws [B] and [C]. C274 4-44 CÓPIA NÃO CONTROLADA...

  • Page 103: Main Drive

    Tighten the screws [A], [B], and [C]. Remove the screwdriver. 4.11.2 MAIN MOTOR PULLEY POSITION After putting the pulley back on the main motor shaft, refer to the above illustration for the correct position of the pulley. 4-45 C274 CÓPIA NÃO CONTROLADA...
  • Page 104 CÓPIA NÃO CONTROLADA Main Drive C274 4-46 CÓPIA NÃO CONTROLADA...

  • Page 105: Firmware Update

    Turn off the main switch and disconnect the power plug. Remove the rear cover. Replace the EPROM on the MPU. Connect the power plug and turn on the main switch. Access SP3-1 and confirm that the suffix version was changed. 4-47 C274 CÓPIA NÃO CONTROLADA...
  • Page 106 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 107: System Maintenance

    CÓPIA NÃO CONTROLADA SYSTEM MAINTENANCE REFERENCE R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 108 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 109: System Maintenance Reference

    Leaving SP Mode To exit SP mode, press Clear Modes/Recovery 5.1.3 USING THE SP MODE SP command numbers can be entered directly. Using the number keys, enter the desired main-menu number, then press the Enter key. C274 CÓPIA NÃO CONTROLADA...
  • Page 110 CÓPIA NÃO CONTROLADA Service Program Mode Using the number keys, enter the desired sub-menu number, then press the Enter key. Enter the desired value using the number keys. Press the enter key to store the displayed setting. C274 CÓPIA NÃO CONTROLADA...

  • Page 111: Troubleshooting

    CÓPIA NÃO CONTROLADA TROUBLESHOOTING R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 112 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 113: Service Call Conditions

    CÓPIA NÃO CONTROLADA Service Call Conditions 6. TROUBLESHOOTING 6.1 SERVICE CALL CONDITIONS See "Appendices" for the following information: SC tables C274 CÓPIA NÃO CONTROLADA...

  • Page 114: Electrical Component Defects

    CÓPIA NÃO CONTROLADA Electrical Component Defects 6.2 ELECTRICAL COMPONENT DEFECTS See "Appendices" for the following information: Electrical component defects C274 CÓPIA NÃO CONTROLADA...
  • Page 115 CÓPIA NÃO CONTROLADA Fuse, LED, VR, DIP-SW, AND TP Tables 6.3 FUSE, LED, VR, DIP-SW, AND TP TABLES See "Appendices" for the following information: Fuse table LED table VR table DIP switch table Test point (TP) table C274 CÓPIA NÃO CONTROLADA...
  • Page 116 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 117 CÓPIA NÃO CONTROLADA C274 SERVICE MANUAL APPENDICES CÓPIA NÃO CONTROLADA...
  • Page 118 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 119 CÓPIA NÃO CONTROLADA C274 APPENDICES TABLE OF CONTENTS 1. APPENDIX: SPECIFICATIONS ........... 1-1 1.1 GENERAL SPECIFICATIONS ..............1-1 1.1.1 MAIN FRAME ................... 1-1 2. APPENDIX: MAINTENANCE TABLES ........2-1 2.1 MAINTENANCE TABLE................2-1 3. APPENDIX: SERVICE CALL CONDITION........3-1 3.1 SC TABLES ....................3-1 4.
  • Page 120 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 121: Appendix: Specifications

    CÓPIA NÃO CONTROLADA APPENDIX: SPECIFICATIONS R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 122 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 123: General Specifications

    500 sheets (80 g/m , 20 lb) Power Source North America: 120 V, 60 Hz, 2.0 A Europe/Asia: 220 - 240 V, 50/60 Hz, 1.1 A Power Consumption 110 - 120V: Less than 175W, Less than 2.9A SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 124 Master type 280 mm width (B4), 50 m/roll 240 mm width (LG), 50 m/roll Yield 100 masters/roll Maximum run length per 2000 prints/master master Storage conditions 0 to 40 °C, 10 to 95 %RH C274 SM Appendix CÓPIA NÃO CONTROLADA...
  • Page 125 (Optimum conditions: 15 to 25°C, 20 to 70%RH) Storage period One year after production date (-5 to 40 °C) 18 months after production date (15 to 25 °C) Avoid locations exposed to direct sunlight. SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 126 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...
  • Page 127 CÓPIA NÃO CONTROLADA APPENDIX: MAINTENANCE TABLES R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 128 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 129: Appendix: Maintenance Tables

    Dry Cloth 1st Feed Damp Roller Cloth 2nd Feed Damp Roller Cloth Dry Cloth, Shading Expected Plate (White life is 10k Plate) masters. Master Feed Thermal Alcohol Head Platen Roller Alcohol Master End Dry Cloth SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 130 Delivery Unit (SAE #20) Bushings Paper Feed Clutch Feed Start Timing Dry Cloth Sensor Drum and Ink Supply Cloth Screen Damp Ink Nozzle Cloth Drum Water or Clamper Alcohol Plate/Magnet Drum Master Dry Cloth C274 SM Appendix CÓPIA NÃO CONTROLADA...
  • Page 131 CÓPIA NÃO CONTROLADA Maintenance Table Sensor Black Patch Dry Cloth Drum Drive Grease Gear and (Alvania#2) SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 132 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 133: Service Call Condition

    CÓPIA NÃO CONTROLADA APPENDIX: SERVICE CALL CONDITION R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 134 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 135: Appendix: Service Call Condition

    The thermistor output voltage is over 4.9 volts. thermistor E-09 Thermal head connector Thermal Heard Drive Failure Thermal head The CPU detects an abnormal condition in the thermal E-10 head drive circuit. Thermal head connector SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 136 Feed start timing sensor Feeler Feed Start Timing Sensor error Master eject position The feed start timing sensor does not activate before sensor E-24 the master eject sensor activates. Feed start timing sensor Feeler C274 SM Appendix CÓPIA NÃO CONTROLADA...
  • Page 137 CÓPIA NÃO CONTROLADA APPENDIX: ELECTRICAL COMPONENT DEFECTS R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 138 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 139: Appendix: Electrical Component Defects

    E-12 is displayed whenever the main switch is on. Pressure Plate HP Sensor Shorted Open E-12 is displayed whenever the main switch is on. Pressure Plate Limit Sensor Shorted The master eject indicator is lit whenever the main SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 140 The M indicator is lit whenever a copy is made. The C jam indicator is lit whenever the main switch is Open Paper Exit Sensor Shorted The B jam indicator is lit whenever a copy is made. C274 SM Appendix CÓPIA NÃO CONTROLADA...

  • Page 141: Fuse, Led, Vr, Dip-Sw, And Tp Tables

    Master eject motor FU702 6.3 A Master/Paper counter Contact Image Sensor (CIS) Pressure plate motor Scanner motor Clamper motor Master feed motor 4.2.2 LED’S Function OFF: Low ink condition LED103 ON: Sufficient ink condition SM Appendix C274 CÓPIA NÃO CONTROLADA...

  • Page 142: Vr's

    8 – Master Writing Position Adjustment) Thermal Head Energy Replacement and Adjustment – 1 to 3 Control Image Adjustment - DIPSW102 No.1 to 3 – Thermal Head Energy Control) Not used Drum Size Selection ON: LG C274 SM Appendix CÓPIA NÃO CONTROLADA...

  • Page 143: Test Points

    Image Adjustment - DIPSW103 No.5 to 8 – Master Feeding Speed Adjustment) 4.2.5 TEST POINTS Function TP101 TP103 Measures the ink detection pulse TP104 Measures the ink detection pulse (standard pulse) TP113 Function TP701 Thermal head voltage TP702 SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 144 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 145: Appendix: Sp Mode Tables

    CÓPIA NÃO CONTROLADA APPENDIX: SP MODE TABLES R E V I S I O N H I S T O RY P a ge D a t e A d de d /U pd at e d /N ew None CÓPIA NÃO CONTROLADA...
  • Page 146 CÓPIA NÃO CONTROLADA CÓPIA NÃO CONTROLADA...

  • Page 147: Input Mode

    Door Safety Switch Master Making Unit Set Sensor 1-53 Cutter Home Position Sensor 1-56 Feed Start Timing Sensor 1-59 Master Eject Position Sensor 1-62 Drum Set Signal 1-65 Clamper Close Sensor 1-66 Clamper Open Sensor SM Appendix C274 CÓPIA NÃO CONTROLADA...
  • Page 148 DIPSW 103-5 1-76 DIPSW 103-6 1-77 DIPSW 103-7 1-78 DIPSW 103-8 1-79 DIPSW 101-1 1-80 DIPSW 101-2 1-81 DIPSW 101-3 1-82 DIPSW 101-4 1-83 DIPSW 101-5 1-84 DIPSW 101-6 1-85 DIPSW 101-7 1-86 DIPSW 101-8 C274 SM Appendix CÓPIA NÃO CONTROLADA...
  • Page 149 CÓPIA NÃO CONTROLADA Input Mode Name Note 1-87 DIPSW 102-1 1-88 DIPSW 102-2 1-89 DIPSW 102-3 1-90 DIPSW 102-4 1-91 DIPSW 102-5 1-92 DIPSW 102-6 1-93 DIPSW 102-7 1-94 DIPSW 102-8 SM Appendix C274 CÓPIA NÃO CONTROLADA...

  • Page 150: Output Mode

    Main Motor: to drum home position 2-28 Main Motor: to master making position 2-36 Master Feed Motor 2-37 Scanner Motor 2-41 Thermal Head Signal Output (VHD Signal) ( Explanation Below) 2-42 Paper Feed Clutch 2-44 Clamper Motor: to close C274 SM Appendix CÓPIA NÃO CONTROLADA...

  • Page 151: Sp2-41: Thermal Head Signal Output (Vhd Signal)

    Power is applied by pressing the # key. To protect the thermal head, the voltage supply is automatically stopped after 30 seconds. It is also stopped by pressing the clear/stop key. Replacement and Adjustment – Master Feed - Thermal Head Voltage Adjustment) SM Appendix C274 CÓPIA NÃO CONTROLADA...

  • Page 152: Test Mode

    The setting value returns to default value in power switch off. SP3-1: Firmware Suffix Information This model has no LCD, so the suffix is displayed as shown below instead of in Latin letters. The letters “i”, “o” and “u” are always skipped. C274 SM Appendix CÓPIA NÃO CONTROLADA...

  • Page 153: Adjustment Mode

    If there is an image problem during copying but the test print is OK, the problem could be in the scanner unit. The print paper should be B4 or LG size when using this test pattern. SM Appendix C274 CÓPIA NÃO CONTROLADA...

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