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Brother SC-2000 Service Manual

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Stamp Creator PRO
SERVICE MANUAL
MODEL: SC-2000
Version A

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Summary of Contents for Brother SC-2000

  • Page 1 Stamp Creator PRO SERVICE MANUAL MODEL: SC-2000 Version A...
  • Page 2 Stamp Creator PRO SERVICE MANUAL MODEL: SC-2000...
  • Page 3 Copyright Brother 1999 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice.

  • Page 4: Table Of Contents

    Stamp Creator PRO SC-2000 Mechanical Part CONTENTS CHAPTER I SPECIFICATIONS................... I-1 MECHANICAL SPECIFICATIONS ....................I-1 Overview ......................... I-1 Input Specifications ......................I-2 Display Specifications...................... I-2 Printing Specifications ..................... I-2 Engraving Stamp Specifications..................I-3 Xenon Unit Specifications ....................I-3 Ribbon Cassette Specifications..................I-3 Magazine Tray Specifications ..................
  • Page 5 CHAPTER III DISASSEMBLY AND REASSEMBLY..........III-1 DISASSEMBLING PROCEDURES ..................... III-2 Disassembly of the I/F Cable and the AC Cord .............. III-2 Disassembly of the Magazine Tray Assy and the Xenon Unit......... III-3 Disassembly of the Ribbon Cassette Assy ..............III-4 Disassembly of the Main PCB Assy ................
  • Page 6 2.18 Reassembly of the Ribbon Cassette Assy..............III-77 2.19 Reassembly of the Xenon Unit..................III-78 2.20 Reassembly of the Magazine Tray Assy ..............III-79 2.21 Reassembly of the AC Cord and the I/F Cable............. III-79 2.22 Lubrication during Reassembly ..................III-80 CHAPTER IV TROUBLESHOOTING ................IV-1 GENERALS ..........................IV-1 PRECAUTIONS ON REPAIRING....................IV-1...

  • Page 7: Chapter I Specifications

    CHAPTER I SPECIFICATIONS MECHANICAL SPECIFICATIONS Overview (1) External view See Fig. 1.1. (2) Dimensions 470 mm (W) 238.3 mm (D) 180.8 mm (H) (without the magazine tray assy) (3) Weight Approx. 8 kg (4) Total weight Approx. 11 kg (machine and package) 238.3 mm 180.8 mm 470 mm...

  • Page 8: Input Specifications

    Input Specifications (1) Type of keys Tactile switch (2) Number of keys (3) Key layout See Fig. 1.2 Fig. 1.2 Control Panel Display Specifications (1) Display method Character type LCD (2) Number of characters 15 columns 1 line (3) Dots CG construction 5 dots 7 dots + the cursor (4) Dot size...

  • Page 9: Engraving Stamp Specifications

    Engraving Stamp Specifications (1) Engraving stamp method Light engraving stamp method (2) Operation load 98 N (10 kgf) or lower (3) Light source Xenon lamp (xenon unit) Xenon Unit Specifications (1) Light source Xenon lamp (2) Light emission times 2000 times or more (3) Construction Xenon tube, reflector, acrylic plate, and glass plate...

  • Page 10: Stamp Specifications

    Stamp Specifications (1) Types and sizes of stamp Size Dimensions (mm) 1212 2020 3030 4040 1060 1438 1850 2260 2770 3458 4090 Fig. 1.3 Stamp Types I - 4...
  • Page 11 (2) Configuration Grip, skirt, holder, and cap (The holder consists of printing material, an absorption sheet, an ink pack, and an inside plate.) Grip Skirt Holder Fig. 1.4 Stamp Configuration (3) Effective printing area Size Dimensions (mm) 1212 2020 18.0 18.0 3030 27.2...

  • Page 12: Draft Sheet Specifications

    1.10 Draft Sheet Specifications (1) Dimensions 58 mm 172 mm 0.1 mm (2) Material PET film (3) Packaged standard draft sheet Yes (150 sheets) Fig. 1.5 Draft Sheet 1.11 ID Label Specifications (1) Dimensions 58 mm 170 mm 0.15 mm (2) Material White PET film (with adhesive and a separator on the back)
  • Page 13 Fig. 1.6 ID Label 1438 Fig. 1.7 ID Label 1850 Fig. 1.8 ID Label 2770 I - 7...

  • Page 14: Chapter Ii Theory Of Mechanism Operation

    CHAPTER II THEORY OF MECHANISM OPERATION PRINTING MECHANISM Construction of Thermal Head The thermal head contains 960 heating elements vertically arranged. The size of one heating element is 0.035 mm wide by 0.060 mm high, as shown in Fig. 2.1. 0.0425 mm 40.7925 mm 0.035 mm...

  • Page 15: Engraving Stamp Mechanism

    ENGRAVING STAMP MECHANISM Theory of Engraving Stamp The draft sheet printed with a character and graphics is fed onto the transparent plate on the light emitting part of the xenon unit. Position the holder on the draft sheet with the printing material (made of porous resin) facing down, and apply a load on the holder by closing the engraving stamp cover to cause the xenon lamp to emit light.

  • Page 16: Positioning The Holder

    Positioning the Holder The holder is positioned at the engraving stamp position by the two interlocked shutters that open and close back and forth and the triangular projections in the centers of the shutters. At this time, the six micro switches send ON/OFF signals according to the shapes of the hollows in the holder, which depend on the size of the holder, to detect the size of the holder, as shown in Fig.

  • Page 17: Feeding Draft Sheet

    FEED MECHANISM Feeding Draft Sheet The draft sheets, set in the magazine tray assy, are fed one by one from the side contacting the paper feed roller, and then separated by the separating claws, as shown in Fig. 2.4. Magazine tray assy Draft sheet Paper feed roller Separating claws...

  • Page 18: Feeding Draft Sheet And Id Label

    Feeding Draft Sheet and ID Label The driving motor rotates each roller via a gear train and the timing belt (MXL belt) to feed a draft sheet and an ID label, as shown in Fig. 2.5. The feeding position of the draft sheet is detected by the transparent sensors to control the printing start position and the engraving stamp position.

  • Page 19: Chapter Iii Disassembly And Reassembly

    CHAPTER III DISASSEMBLY AND REASSEMBLY Precautions on Safety (1) Disassemble and reassemble the machine on a grounded antistatic sheet. Touching electronic components such as an LSI with an electrified hand will break them, as they are easily affected by static electricity. (2) Wrap the machine in an electrically conductive aluminum sheet before carrying (3) When using heating tools such as soldering iron, take care not to thermally break resin components such as a wire, a PCB, and a cover.

  • Page 20: Disassembly Of The I/F Cable And The Ac Cord

    DISASSEMBLY PROCEDURES Disassembly of the I/F Cable and the AC Cord Remove the I/F cable and the AC cord in the back of the machine, as shown in Fig. 3.1. Parallel I/F cable Serial I/F cable AC cord Fig. 3.1 III - 2...

  • Page 21: Disassembly Of The Magazine Tray Assy And The Xenon Unit

    Disassembly of the Magazine Tray Assy and the Xenon Unit Remove the magazine tray assy by lifting it diagonally. While sliding the slide lever on the side of the machine upwards, pull out the xenon unit, as shown in Fig. 3.2. Magazine tray assy Body cover Slide lever...

  • Page 22: Disassembly Of The Ribbon Cassette Assy

    Disassembly of the Ribbon Cassette Assy Press the open button on top of the machine to open the cassette cover, and remove the ribbon cassette assy, as shown in Figs. 3.3 and 3.4. Open button Cassette cover Body cover Fig. 3.3 Ribbon cassette assy Body cover Fig.

  • Page 23: Disassembly Of The Main Pcb Assy

    Disassembly of the Main PCB Assy Press part A of the cassette cover to close it, as shown in Fig. 3.5. Cassette cover Body cover Fig. 3.5 Turn the machine over and remove the four screws to remove the main PCB assy, as shown in Fig.
  • Page 24 Pull out the connectors from the main PCB assy. Remove the screw to remove the ground wire from the main chassis, as shown in Fig. 3.7. Note: Put on a static control wrist band before handling PCBs. Screw Main PCB assy Main chassis Ground wire Main PCB...

  • Page 25: Disassembly Of The Capacitor Case

    Disassembly of the Capacitor Case Remove the shield plate and pull out the connector of the power supply harness from the power supply PCB assy, as shown in Fig. 3.9. Shield plate Body cover Power supply PCB assy Power supply harness Fig.
  • Page 26 Remove the four screws to remove the capacitor case from the bottom cover. Remove the capacitor harness from the connector of the capacitor case, and remove the screw to remove the ground wire, as shown in Fig. 3.10. Screws Capacitor case Screws Capacitor harness Ground wire...

  • Page 27: Disassembly Of The Body Cover

    Disassembly of the Body Cover Turn the machine over with the right side up, open the cassette cover, and remove the two screws to remove the cassette cover, as shown in Fig. 3.11. Head holder assy Screws Cassette cover Body cover Fig.
  • Page 28 Remove the eject cover and the screw. Remove the slide lever, as shown in Fig. 3.13. Eject cover Screw Slide lever Fig. 3.13 Remove the three screws in the back of the cover, and remove the body cover by lifting it, as shown in Figs. 3.14 and 3.15. Screws Fig.
  • Page 29 Body cover Bottom cover Fig. 3.15 Remove the two screws to remove the control panel PCB holder from the body cover. Remove the screw from the control panel PCB holder to remove the control panel PCB assy, as shown in Fig. 3.16. Body cover Screw Control panel...

  • Page 30: Disassembly Of The Main Chassis And The Bottom Cover

    Disassembly of the Main Chassis and the Bottom Cover Press the open button to open the head holder assy, as shown in Fig. 3.17. Head holder assy Open button Fig. 3.17 Remove the six screws to remove the main chassis from the bottom cover, and remove the two cores, as shown in Fig.
  • Page 31 Remove the two screws to remove the ground wire from the PS PCB shield plate and the main chassis, as shown in Fig. 3.19. Screw Main chassis Ground wire Screw PS PCB shield plate Fig. 3.19 Remove the size detection PCB harness from the bottom cover, as shown in Fig. 3.20.
  • Page 32 Remove the harness coming out of the main chassis from the bottom cover, as shown in Fig. 3.21. Main chassis Bottom cover Fig. 3.21 III - 14...

  • Page 33: Disassembly Of The Power Supply Pcb Assy

    Disassembly of the Power Supply PCB Assy Turn the bottom cover over, and remove the two screws securing the power supply PCB assy on the bottom cover to remove the power supply PCB assy. Then, remove the PS PCB shield plate, as shown in Fig. 3.22. Note: Put on a static control wrist band before handling PCBs.

  • Page 34: Disassembly Of The Thermal Head Unit

    Disassembly of the Thermal Head Unit Cut two fastening bands L100 that secure the harness on the main chassis, as shown in Fig. 3.23. Free bush 50 Fastening band L100 Fastening band L100 Free bush 15 Hole Main chassis Harness Fig.

  • Page 35: Disassembly Of The Sensor Assys

    1.10 Disassembly of the Sensor Assys Remove the screw to remove reflective sensor assy A from the head holder. Remove the screws to remove reflective sensor assys B and C from the sensor brackets. Remove the screw to remove transparent sensor assy A from the film path. Remove the screw to remove transparent sensor assy B from the presser unit assy, as shown in Fig.

  • Page 36: Disassembly Of The Micro Switches

    1.11 Disassembly of the Micro Switches Remove the screw to remove micro switch assy A for cassette cover open/close detection from the main chassis, as shown in Fig. 3.26. Micro switch assy A Screw Main chassis Fig. 3.26 Remove the screw to remove micro switch assy B for xenon reset from the main chassis.

  • Page 37: Disassembly Of The Platen Unit Assy

    1.12 Disassembly of the Platen Unit Assy After removing the two screws, lift the platen unit assy in the directions of the arrows, as shown in Fig. 3.28. Screws Main chassis Platen unit assy Fig. 3.28 Slide the platen unit assy in the direction of arrow 1, pass gear A through the hole in the main chassis, turn the projection of the bearing down, tilt the platen unit assy in the direction of arrow 2, and pull it out in the direction of arrow 3, as shown in Fig.
  • Page 38 Subsequently, separate the film guide from the platen unit, as shown in Fig. 3.30. Film guide Platen unit Fig. 3.30 III - 20...

  • Page 39: Disassembly Of The Presser Unit Assy

    1.13 Disassembly of the Presser Unit Assy Open the presser unit cover in the direction of the arrow. Remove the 12 screws securing the presser unit assy on the main chassis to remove the presser unit assy, as shown in Fig. 3.31. Screws Presser unit cover Screws...
  • Page 40 Remove the four retaining rings to remove the presser plate hinge shaft from the presser frame sub assy, as shown in Fig. 3.32. Retaining ring Presser plate Presser plate hinge shaft Retaining ring Retaining rings Presser frame sub assy Fig. 3.32 While bending two claws A of the presser plate cover and the presser plate in the directions of the arrows, remove the presser plate cover, as shown in Fig.
  • Page 41 Remove the two retaining rings to remove the presser plate positioning shaft from the presser plate. While bending the four claws in the directions of the arrows, remove the presser lever cover, as shown in Fig. 3.34. Presser lever cover Presser lever Presser plate Retaining ring...
  • Page 42 Remove the two presser bearings, and then pull the presser plate lever shaft and presser plate lock shaft out from the presser lever, as shown in Fig. 3.35. Presser lever Presser bearing Presser plate lever shaft Presser bearing Presser plate lock shaft Presser plate lock spring Presser plate lock Fig.
  • Page 43 Remove the two retaining rings and the two bearings to remove the presser frame shaft. While bending the four claws and the two tongues, remove the shutter cover from the presser frame sub assy. Remove the two shutter springs from the shutter front and the shutter rear. Remove the shutter front, shutter rear, and the two pinions 14 from the presser frame sub assy.

  • Page 44: Disassembly Of The Head Holder Assy

    1.14 Disassembly of the Head Holder Assy Remove hooks A of the two head holder springs from the grooves of the main chassis. Remove the two retaining rings and pull out the rotation shaft in the direction of the arrow, as shown in Fig. 3.37. Head guide spring Head holder guide Retaining ring...
  • Page 45 Remove the two retaining rings and pull out the lever shaft in the direction of the arrow, and remove the lever hook. Remove the two retaining rings and pull out the head guide shaft in the direction of the arrow, as shown in Fig. 3.38. Lever hook Lever hook Lever shaft...

  • Page 46: Disassembly Of The Gears And Pulleys

    1.15 Disassembly of the Gears and Pulleys Remove the gears and pulleys in the numerical order shown in Fig. 3.39. Gear 25 Pulley 18 Gear 50A Ã Pulley 25 Â Gear 19/84 Á Ç Gear 21/47 Æ Gear 20/50 Å Gear 68 Ä...

  • Page 47: Disassembly Of The Motor Holder Assy And The Motors

    1.16 Disassembly of the Motor Holder Assy and the Motors Remove the three screws securing the motor holder sub assy on the main chassis to remove the motor holder sub assy. Remove the two screws to remove the main motor from the motor holder sub assy. Remove the two screws to remove the paper feed motor from the main chassis, as shown in Fig.

  • Page 48: Disassembly Of The Rollers

    1.17 Disassembly of the Rollers Remove the two retaining rings and bearings to remove the driving roller. Remove the retaining ring, paper eject roller spring, and two bearings to remove the paper eject roller. Remove the two retaining rings and bearings to remove the paper feed roller. Remove the clutch spring, the washer, and the retaining ring from the paper feed roller.

  • Page 49: Disassembly Of The Label Guide Assy

    1.18 Disassembly of the Label Guide Assy Remove the five screws securing the label guide assy on the main chassis, and remove the label guide assy by pressing projections A and B of the label guide to release them from the holes, as shown in Fig. 3.42. Screws Label guide assy Screw...
  • Page 50 Remove label nip springs R and L. Remove the two screws to remove the sensor bracket from the label guide. Remove the two retaining rings to remove the ribbon cassette shaft from the label guide, as shown in Fig. 3.43. Sensor bracket Label nip spring R Screws...

  • Page 51: Disassembly Of The Film Path Assy

    1.19 Disassembly of the Film Path Assy Remove the two retaining rings and bearings to remove the paper feed roller. Remove the clutch spring, the washer, and the retaining ring from the paper feed roller. Remove the seven screws securing the film path assy on the main chassis, press two projections A of the film path to release them from the holes, and remove the film path assy.
  • Page 52 Remove the retaining rings, pull out the two outer plate shafts, and remove the outer plate, the lock plate, and the two return springs. Remove the two screws to remove the sensor bracket. Remove the two magazine springs, and the magazine lift sub assy while pressing parts A and B of the film path to release them, as shown in Fig.

  • Page 53: Disassembly Of The Drawer Connector

    1.20 Disassembly of the Drawer Connector Remove the two screws to remove the drawer connector from the main chassis, as shown in Fig. 3.46. Drawer connector Screws Main chassis Fig. 3.46 Remove free bush 50, and free bushes 15 and 70, as shown in Fig. 3.47. Main chassis Free bush 50 Free bush 15...

  • Page 54: Reassembly Of The Drawer Connector

    REASSEMBLY PROCEDURES Reassembly of the Drawer Connector Set free bush 50, and free bushes 15 and 70 on the holes in the main chassis, as shown in Fig. 3.48. Main chassis Free bush 50 Free bush 15 Free bush 70 Fig.

  • Page 55: Reassembly Of The Film Path Assy

    Reassembly of the Film Path Assy While bending two parts A of the film path in the directions of the arrows, insert them into the holes in the magazine lift sub assy, as shown in Fig. 3.50. Parts A Magazine lift sub assy Film path Fig.
  • Page 56 After setting the sensor bracket on two parts D of the film path assy, set the film path assy so that the two locating pins on the film path assy will be inserted into holes E in the sensor bracket, and secure the film path assy with the two screws, as shown in Fig.
  • Page 57 Pass one outer plate shaft through the hole in the film path in the direction of the arrow, through the holes in the outer plate, the return spring, and the hole on the opposite side of the film path, before setting the retaining ring on the outer plate shaft.
  • Page 58 In the same manner, pass the other outer plate shaft through the hole in the film path in the direction of the arrow, through the holes in the lock plate, the return spring, and the hole on the opposite side of the film path, before setting the retaining ring on the outer plate shaft.
  • Page 59 Set torsion spring R on the projection of the main chassis so that hook A of torsion spring R will be inserted into the hole in the main chassis. In the same manner, set torsion spring L on the opposite side. Pass each end of the nip roller through the hole from the inside of the main chassis, and set the retaining rings on both ends of the nip roller from the outside of the main chassis.

  • Page 60: Reassembly Of The Label Guide Assy

    Reassembly of the Label Guide Assy Set the retaining ring, the washer, and the clutch spring on the paper feed roller shaft. Note 1: Before setting the clutch spring, apply grease on the shaft. Pass end A of the paper feed roller through the hole in the main chassis from the inside, and then pass end B through the hole on the opposite side of the main chassis.
  • Page 61 Set the sensor bracket on the two locating pins on the label guide, and secure the sensor bracket on the label guide with the two screws. Set label nip spring L on the pin on the label guide, and set the two hooks of the label nip spring L in hook A and then hook B of the label guide.
  • Page 62 While bending two parts D of the label guide assy to the inside, set the label guide assy in the main chassis. Secure the label guide assy in the main chassis with the five screws. Note 2: Make sure that two parts D of the label guide is properly inserted into the holes in the main chassis, as shown in Fig.

  • Page 63: Reassembly Of The Rollers

    Reassembly of the Rollers While pressing ends A of the label nip springs in the directions of the arrows, pass each end of the nip roller through the hole from the inside of the main chassis. Slide the label nip springs so that their ends A will contact parts B of the nip roller. Note 1: Check that ends A of the label nip springs make contact with parts B of the nip roller, then apply grease to parts B of the nip roller.
  • Page 64 Set the retaining ring, the washer, and the clutch spring on the paper feed roller. Note 2: Before setting the clutch spring, apply grease to the portion on the paper feed roller where the clutch spring is to make contact with. Insert end A of the paper feed roller into the hole in the main chassis from the inside, and end B of the paper feed roller into the hole on the opposite side of the main chassis, while pressing the nip roller.
  • Page 65 Insert end A of the driving roller into the hole in the main chassis from the inside, and then insert end B of the driving roller into the hole on the opposite side of the main chassis. Set the bearings and the retaining rings on both ends of the driving roller from the outside of the main chassis.

  • Page 66: Reassembly Of The Motor Holder Assy And The Motors

    Reassembly of the Motor Holder Assy and the Motors Set the main motor in the hole in the motor holder sub assy so that the end of the harness will be at a lower position, and secure the main motor on the motor holder sub assy with the two screws.

  • Page 67: Reassembly Of The Gears And Pulleys

    Reassembly of the Gears and Pulleys (1) Set gear 21/47 on shaft A. (2) After inserting shaft B through the clutch spring A, set gear 20/50. (3) After inserting shaft C through the clutch spring A, set gear 68 and the retaining ring.
  • Page 68 Shaft H Bearing Shaft E Shaft G Shaft F Gear 25 Paper eject Shaft I roller spring Pulley 18 Shaft J Shaft D Shaft A Clutch spring C Shaft B Gear 50A Pulley 25 Shaft C MXL belt 221 Gear 19/84 Gear 20/50 Gear 21/47 Clutch spring A...

  • Page 69: Reassembly Of The Head Holder Assy

    Reassembly of the Head Holder Assy Place two compression springs on two burrs of the head holder as shown in Fig.3.64. Hook two catches A of the head holder on the head holder guide, then fit two burrs of the head holder guide over the compression springs. Lower the head holder guide.
  • Page 70 Set the lever hook on the head holder guide, insert the lever shaft into the hole in the head holder guide, pass the lever shaft through the lever hook return spring, and insert the lever shaft into the hole on the opposite side of the head holder guide in the direction of the arrow.
  • Page 71 Pass the rotation shaft through the hole in the main chassis from the outside in the direction of the arrow. Pass the rotation shaft through the head guide spring, the head holder assy, head holder springs R and L, and the hole on the opposite side of the main chassis, and set the two retaining rings on the rotation shaft.

  • Page 72: Reassembly Of The Presser Unit Assy

    Reassembly of the Presser Unit Assy Set the size detection PCB assy and the shield plate rear on the shutter rear, and secure them with the three screws. Set two pinions 14 on the two shafts in the presser frame sub assy. Set the shutter rear and then the shutter front, as shown in Fig.
  • Page 73 Adjust the ends of the ribs of the shutter rear to the centers of the pinion shafts. Set the shutter front so that there will be no clearance between the ends of the ribs of the shutter front and those of the shutter rear, as shown in Fig. 3.68. Shutter rear Shutter front Fig.
  • Page 74 Set the two shutter springs on the two hooks of the shutter front and the shutter rear. Insert the four claws of the shutter cover into the holes in the presser frame sub assy. Pass the presser frame shaft through the presser frame sub assy, and set the retaining rings and the bearings on both ends of the presser frame shaft.
  • Page 75 Pass the positioning shaft through the presser plate and the positioning presser plate, and set the retaining rings on both ends of the positioning shaft. Pass the presser plate lock shaft through the hole in the presser lever from the outside in the direction of the arrow.
  • Page 76 Pass the hinge shaft through the hole in the presser frame sub assy from the outside in the direction of the arrow. Pass it through the presser plate hinge spring, the presser plate, and the hole on the opposite side of the presser frame sub assy, and set the four retaining rings, as shown in Fig.
  • Page 77 On assembling the presser unit assy with the main chassis, adjust the position using the presser jig assy and adjustment jig according to the following steps. Note 3: Use caution when handling and taking custody of the jigs. (1) Place the main chassis on the presser jig assy (part of the presser base assy) at the specified position, as shown in Fig.
  • Page 78 (3) Open the presser plate, then place the adjustment jig in the presser sub unit assy, as shown in Fig. 3.72C. Adjustment jig Presser plate Presser frame sub assy Main chassis Fig. 3.72C (4) Close the presser plate. Note 5: Check that the presser plate is locked (B), as shown in Fig. 3.72D. Presser frame shaft Presser sub unit assy Main chassis...
  • Page 79 (6) Place the presser jig assy on the presser frame sub assy, as shown in Fig. 3.73A. Note 6: Before securing the presser jig assy, check the following items. Presser side plate Presser hook base Presser side plate Presser frame sub assy Main chassis Presser jig assy (part of the presser base assy)
  • Page 80 * Check that the frame of the presser frame sub assy supports the side plates R/L of the presser jig assy from inside (E). Also check that the protrusion (F) of the presser jig assy presses the frame of the presser frame sub assy downward by checking that D and E are properly set, as shown in Fig.
  • Page 81 (8) Tighten ten screws in the order specified in Fig. 3.74A to 3.74B. Note 8: Tighten those screws twice. Pressser jig assy Main chassis Screws Screws Presser sub unit assy Fig. 3.74A Screw Screws Main chassis Presser jig assy Screws (part of the presser Presser jig assy base assy)
  • Page 82 (10) Open the presser plate, then tighten two screws, as shown in Fig. 3.74C. Note 9: Tighten those screws twice. Presser plate Adjustment jig Main chassis Screws Fig. 3.74C (11) Remove the presser jig assy (part of the presser base assy) and adjustment jig. (12) Attach the presser plate cover to the presser plate, as shown in Fig.

  • Page 83: Reassembly Of The Platen Unit Assy

    Reassembly of the Platen Unit Assy Set the platen unit on the film guide, as shown in Fig. 3.75. Film guide Platen unit Fig. 3.75 Insert part A of the platen unit assy into the hole in the main chassis from the inside. Then, insert part B of the platen unit assy into the hole on the opposite side of the main chassis, and insert the platen unit assy into the two grooves of the main chassis, with the projection of the bearing turned upwards, as shown in Fig.
  • Page 84 Secure the platen unit assy with the two screws, as shown in Fig. 3.77. Screws Main chassis Platen unit assy Fig. 3.77 III - 62...

  • Page 85: Reassembly Of The Micro Switches

    2.10 Reassembly of the Micro Switches Set hole A in the micro switch assy A for cassette cover open/close detection on the emboss on the main chassis. Screw the switch on the main chassis where hole B in the switch and the hole in the main chassis overlap, as shown in Fig.

  • Page 86: Reassembly Of The Sensor Assys

    2.11 Reassembly of the Sensor Assys Secure reflective sensor assy A on the head holder with the screw. Pass the reflective sensor assy A harness between the rotation shaft and the head holder guide, and pass it through hole E in the main chassis and to the outside. Secure reflective sensor assys B and C on the sensor brackets with the screws.

  • Page 87: Reassembly Of The Thermal Head Unit

    2.12 Reassembly of the Thermal Head Unit Fig. 3.81 shows the thermal head unit. Caution: Take care not to touch the thermal head heat generating points. Heat generating points Thermal head unit Fig. 3.81 Set the thermal head unit on the two embosses on the head holder, and secure it with the two screws.

  • Page 88: Reassembly Of The Power Supply Pcb Assy

    2.13 Reassembly of the Power Supply PCB Assy Insert two parts A of the PS PCB shield plate into two holes B in the bottom cover. After setting the power supply PCB assy on the two hooks C of the bottom cover, set the power supply PCB assy on the locating boss on the bottom cover, and secure the power supply PCB assy on the bottom cover with the two screws, as shown in Fig.

  • Page 89: Reassembly Of The Bottom Cover And The Main Chassis

    2.14 Reassembly of the Bottom Cover and the Main Chassis Insert the end of the size detection PCB harness into the hole in the bottom cover, and set it into hooks A, B, C, and D, as shown in Fig. 3.84. Size detection PCB harness Fig.
  • Page 90 Set the main chassis assy on the two locating bosses on the bottom cover, and secure it on the bottom cover with the six screws. Then, set the two cores, as shown in Fig. 3.86. Screws Screws Screws Main chassis Locating boss Locating boss Bottom cover...

  • Page 91: Reassembly Of The Body Cover

    2.15 Reassembly of the Body Cover Set the control panel PCB assy on the control panel PCB holder, and secure it with the screw. Set the control panel PCB assy on the back of the body cover, and secure it on the body cover with the two screws.
  • Page 92 After passing the control panel PCB harness through the hole in the bottom cover, set the body cover on the bottom cover, and secure it with the six screws. Set the eject cover and the slide lever on the body cover, as shown in Fig. 3.89. Control panel PCB harness Bottom cover...
  • Page 93 Set the cassette cover on the head holder guide by setting the two hooks of the cassette cover on the head holder guide, and secure it with the two screws, as shown in Fig. 3.90. Note: Make sure that the two locating bosses and hooks are properly set. Cassette cover Head holder guide Screws...

  • Page 94: Reassembly Of The Capacitor Case

    2.16 Reassembly of the Capacitor Case Set the ground wire of the capacitor case on the main chassis with the screw, pass connector A of the capacitor case through the hole in the bottom cover, and connect it to the connector of the power supply PCB assy. Connect connector D coming out of the bottom cover to connector B of the capacitor case.
  • Page 95 When exchanging the capacitor case and main PCB assy, perform the following steps after completing reassembly. Capacitor Case Rank Setting Procedure (1) Turn the power switch ON while holding the MODE key. (2) Press the MODE key for 10 seconds until the LCD unit displays "<<Ver **.**>>". : Program version No.

  • Page 96: Reassembly Of The Main Pcb Assy

    2.17 Reassembly of the Main PCB Assy Pass the harness through the hole of the shield plate, and set the shield plate on the bottom cover, as shown in Fig. 3.92. Shield plate Paper feed motor harness Power supply PCB harness Control panel PCB harness Size detection...
  • Page 97 Connect the harness to each connector on the main PCB assy, as shown in Fig. 3.94. Power supply PCB Xenon unit detection/ Stamp size detection sensor release sensor Main motor Control panel PCB Ribbon detection Paper feed motor Main capacitor charge PCB Power supply PCB Manual feed detection Not in use...
  • Page 98 Secure the main PCB bottom plate on the bottom cover with the four screws, as shown in Fig. 3.96. Screws Screws Main PCB bottom plate Bottom cover Fig. 3.96 III - 76...

  • Page 99: Reassembly Of The Ribbon Cassette Assy

    2.18 Reassembly of the Ribbon Cassette Assy Turn the machine over with the right side up, and press the open button on the cassette cover to open the cassette cover. Set the ribbon cassette assy, and close the cassette cover, as shown in Fig. 3.97. Cassette cover Ribbon cassette assy Body cover...

  • Page 100: Reassembly Of The Xenon Unit

    2.19 Reassembly of the Xenon Unit Assy Insert the xenon unit assy into the machine at its right side, as shown in Fig. 3.98. Note: Insert the xenon unit assy all the way until it is locked. Body cover Xenon unit assy Fig.

  • Page 101: Reassembly Of The Magazine Tray Assy

    2.20 Reassembly of the Magazine Tray Assy Insert the magazine tray assy into the hole in the machine in the direction of the arrow, as shown in Fig. 3.99. Magazine tray assy Body cover Fig. 3.99 2.21 Reassembly of the AC Cord and the I/F Cable Set the AC cord and the I/F cable in the back of the machine, as shown in Fig.

  • Page 102: Lubrication During Reassembly

    2.22 Lubrication during Reassembly Apply the grease specified below to the parts indicated in the Figs. 3.101 to 3.103 for the reassembly procedures. The amount of the grease to be applied is specified in the Figs. 3.101 to 3.103. Specified grease: G501 (silicon grease) Portion: A (Nip roller) Amount: Apply small amount of grease to the portion where the...
  • Page 103 Presser lever Presser plate lock Portion: E (Presser plate lock shaft) Amount: Apply small amount of grease to Portion: F (Hinge shaft) the portion where the presser plate lock Presser plate Amount: Apply small shaft, presser lever, and presser plate lock amount of grease to the portion make contact with each other.

  • Page 104: Chapter Iv Troubleshooting

    CHAPTER IV TROUBLESHOOTING GENERALS This section provides a troubleshooting procedure for a machine failure. It is however impossible to foresee when and how a machine failure happens and is quite difficult to establish a troubleshooting procedure for a given machine failure. The troubleshooting procedure given here therefore lists only the limited cases.
  • Page 105 Cause of Mechanical Error Error mode Checking method Cause Action Service manual The motor rotates, Is a draft sheet or an Draft sheet or ID Remove and but a draft sheet or ID label inserted into label set in the reinsert the draft an ID label is not the end of the...
  • Page 106 Error mode Checking method Cause Action Service manual The motor rotates, Is the clutch spring on Deformed or Replace the CHAPTER III but a draft sheet or the paper feed roller broken clutch deformed or 1.15 an ID label is not deformed or broken? spring broken clutch...
  • Page 107 Error mode Checking method Cause Action Service manual Printing is not Is the transparent Sensor set in the Set the CHAPTER III performed in the sensor assy A set in incorrect position transparent 2.11 correct position of the correct position? sensor assy A in Disassembly of an ID label.
  • Page 108 Error mode Checking method Cause Action Service manual A draft sheet or an Is the Disconnected Connect the CHAPTER III ID label is fed, but connector connector of the connector of the 2.17 no printing is of the thermal head thermal head.
  • Page 109 Stamp Creator PRO SC-2000 Electronic Part CONTENTS CHAPTER I ELECTRONIC SPECIFICATIONS............I-1 CONTROL SPECIFICATIONS ...................... I-1 INTERFACE SPECIFICATIONS ....................I-1 POWER SUPPLY SPECIFICATIONS ................... I-2 DISPLAY SPECIFICATIONS ......................I-2 SWITCH SPECIFICATIONS ......................I-3 CHARGE SPECIFICATIONS ......................I-3 DETECTION SPECIFICATIONS....................I-3 CHAPTER II GENERALS...................
  • Page 110 CHAPTER III THEORY OF OPERATION..............III-1 MAIN PCB ..........................III-1 Logic Components......................III-1 EEPROM Circuit......................III-1 Thermal Head Drive Circuit.................... III-2 Thermal Head Power Supply Control Circuit ..............III-3 Stepping Motor Drive Circuit (Main Motor) ..............III-4 Stepping Motor Drive Circuit (Paper Feed Motor)............III-5 Main Oscillating Circuit ....................
  • Page 111 CHAPTER IV TROUBLESHOOTING ................IV-1 GENERALS ..........................IV-1 PRECAUTIONS ON REPAIRING....................IV-1 ACTIONS TO BE TAKEN AFTER REPAIRS................IV-1 APPENDIX Main PCB Circuit Diagram (1/2)....................APP-1 Main PCB Circuit Diagram (2/2)....................APP-2 Control Panel PCB Circuit ....................... APP-3 100V AC System Power Supply Circuit..................APP-4 200V AC System Power Supply Circuit..................

  • Page 112: Chapter I Electronic Specifications

    CHAPTER I ELECTRONIC SPECIFICATIONS CONTROL SPECIFICATIONS (1) CPU 16-bit CPU M37702 ROM capacity 32 Kbytes RAM capacity 2048 bytes (2) External memory 2 Mbits EEPROM 2-wire serial EEPROM Capacity 4 Kbits Min. data writing times Data hold time 10 years INTERFACE SPECIFICATIONS (1) Windows interface Bidirectional parallel interface...

  • Page 113: Power Supply Specifications

    POWER SUPPLY SPECIFICATIONS (1) Power supply method Switching regulator Separate power supplies for 100V and 200V areas Number of phase: Single (2) Rated input voltage 100V system: 120V AC 50/60 Hz and frequency 200V system: 230V AC 50/60 Hz (3) Output voltage 2 outputs 5V system: 8V DC...

  • Page 114: Switch Specifications

    SWITCH SPECIFICATIONS (1) Type Metal contact tactile switch CHARGE SPECIFICATIONS (1) Output properties Output voltage Variable between 0V and 350V DC 11000µF electrolytic capacitor is charged in approximately 45 seconds. DETECTION SPECIFICATIONS (1) Open cover Micro switch (2) Ribbon sensor Photo-interrupter (3) Position detection sensor Photo-interrupter...

  • Page 115: Chapter Ii Generals

    CHAPTER II GENERALS CONFIGURATION OF THE ELECTRONIC PART Fig. 2.1 shows the configuration of the electronic part, which consists of seven PCBs, two motors, and a thermal head. PCBs Main PCB, power supply PCB, charge PCB, control panel PCB, size detection PCB, reflective sensor assy, and transparent sensor assy.

  • Page 116: Motor

    MOTOR (1) Main motor This motor feeds a draft sheet or an ID label from the platen to the eject opening. It is a 42 bipolar motor at a drive voltage of 25V. (2) Paper feed motor This motor feeds a draft sheet or an ID label label from the manual insertion opening or the magazine tray to the platen.
  • Page 117 Fig. 2.2 shows the block diagram of the electronic part. Positions of the Connectors on the Main PCB Room temperature detection Main capacitor Thermal head charge PCB Power supply PCB Main motor Control panel PCB Size detection Xenon unit detection sensor Power supply PCB Serial I/F cable...
  • Page 118 Fig. 2.2 Block Diagram of the Electronic Part II - 4...

  • Page 119: Chapter Iii Theory Of Operation

    CHAPTER III THEORY OF OPERATION MAIN PCB Logic Components (1) CPU The CPU (#19: M37702) is a CMOS (16-bit) microprocessor, and controls and supervises the whole system. This CPU contains a 32-Kbyte ROM and a 2048-byte RAM. The external 8-bit data bus controls the SRAM and I/O. The internal data bus is of 16 bits.

  • Page 120: Thermal Head Drive Circuit

    Thermal Head Drive Circuit Fig. 3.2 shows the thermal head drive circuit. Printing data is synchronized with the CLK signal by the SO signal to be output to the thermal head. It is latched on the driver IC of the thermal head by the LAT signal, and the heating elements of the thermal head are energized by the STB signal.

  • Page 121: Thermal Head Power Supply Control Circuit

    Thermal Head Power Supply Control Circuit Fig. 3.3 shows the thermal head power supply control circuit. Fig. 3.3 Thermal Head Power Supply Control Circuit Receiving the 25V input from the power supply PCB, the thermal head power supply control circuit generates the output voltage of the switching regulator (#17: MC34166T) according to the thermal head voltage control signal output from P61 of the CPU.

  • Page 122: Stepping Motor Drive Circuit (Main Motor)

    Stepping Motor Drive Circuit (Main Motor) Fig. 3.4 shows the main motor drive circuit. The 42, 48 division stepping motor is used to feed a draft sheet or an ID label from the platen to the eject opening. The drive circuit is bipolar. Fig.

  • Page 123: Stepping Motor Drive Circuit (Paper Feed Motor)

    Stepping Motor Drive Circuit (Paper feed Motor) Fig. 3.5 shows the paper feed motor drive circuit. The 25, 24 division stepping motor is used to feed a draft sheet or an ID label from the manual insertion opening or the magazine tray to the platen. The drive circuit is unipolar.

  • Page 124: Sub Oscillating Circuit

    Sub Oscillation Circuit Fig. 3.7 shows the sub oscillation circuit. This circuit generates a clock for a serial transfer. Fig. 3.7 Sub Oscillation Circuit III - 6...

  • Page 125: Reset Circuit

    Reset Circuit Fig. 3.8 shows the reset circuit. The reset circuit prevents a logic circuit such as the CPU from malfunctioning when its power is turned on or off. Fig. 3.8 Reset Circuit Fig. 3.9 shows the signal timing for power on and power off. The logic 5V power supply voltage (Vcc) increases when the power supply is supplied by the turning on of the power supply switch.

  • Page 126: Serial Interface Circuit

    1.10 Serial Interface Circuit Fig. 3.10 shows the serial interface circuit. #4 is a driver IC for RS-232C and converts logic level signals into RS-232C signals. The RXD- signal is a print data input signal from the computer and transferred at 57.6 K baud rate.

  • Page 127: Parallel Interface Circuit

    1.11 Parallel Interface Circuit Fig. 3.11 shows the parallel interface circuit. The address space for the gate array #13 is used to input and output data, which provides a Centronics (parallel) interface. Fig. 3.11 Parallel Interface Circuit III - 9...

  • Page 128: Power Supply Circuit (Stabilization Circuit)

    1.12 5V Power Supply Circuit (Stabilization Circuit) Fig. 3.12 shows the 5V power supply circuit. 3-terminal regulator (#5: S-81350), transistor Q1 (25B1427), and resistor R 10 (10 ) generate logic voltage Vcc (5V) from +8V supplied by the power supply PCB. Fig.

  • Page 129: Charge/Discharge Control Circuit

    1.14 Charge/Discharge Control Circuit Fig. 3.14 shows the charge/discharge control circuit. Fig. 3.14 Charge/Discharge Control Circuit The active level for each signal is: Charge signal: H Light emission signal: H Discharge signal: L Charge completion signal: L The charge voltage SO signal synchronized with the charge voltage CLK signal is used for the serial transfer of the charge voltage setting to the charge PCB.
  • Page 130 1.15 Size Detection, Ribbon Cassette, Open Cover Detection, and Key Scanning Circuit Table 3.1 shows a relationship between the stamp ID, its size, and the detection switches. In terms of dimensions (width and height), ID labels come in 11 types (1212, 2020, 1438, 3030, 4040, 1060, 3458, 1850, 2260, 2770, and 4090), and draft sheets come in one type, totaling 12 types.
  • Page 131 Stamp ID Size Status of the detection switches ¢ ¢ 1060 ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ 3458 ¢ ¢ ¢...
  • Page 132 Fig. 3.15 Stamp Size Detection, Open Cover Detection, and Key Scanning Circuit III - 14...

  • Page 133: Room Temperature Detection Circuit

    1.16 Room Temperature Detection Circuit Fig. 3.16 shows the room temperature detection circuit. The resistance value at the chip thermistor varies depending on temperature, while the resistance value at R77 (47 K 1%) is fixed. The potential at the R76 chip thermistor is output to the analog input port AN1 of the CPU to detect temperature.

  • Page 134: Xenon Unit Detection Circuit

    1.18 Xenon Unit Detection Circuit Fig. 3.18 shows the xenon unit detection circuit. With the xenon unit that connects each of xenon unit signals Xe UNIT 0-2 with Xe UNIT-, this circuit can handle different levels of the light of the xenon tube. Fig.

  • Page 135: Reflective Sensor Circuit

    1.19 Reflective Sensor Circuit Fig. 3.19 shows the reflective sensor circuit. In the ribbon detection, the presence and the end of the cassette ribbon are detected. In the automatic feed position detection, it is judged whether the feed position of a draft sheet or an ID label is correct.

  • Page 136: Transparent Sensor Circuit

    1.20 Transparent Sensor Circuit Fig. 3.20 shows the transparent sensor circuit. In the printing position detection, the printing start position is detected. In the trigger detection, the light emission trigger of the xenon tube is detected by closing the presser unit cover. Fig.

  • Page 137: Power Supply Pcb Circuit

    POWER SUPPLY PCB CIRCUIT The power supply is divided into 100V AC and 200V AC systems. APP-4 shows the 100V AC system power supply circuit. APP-5 shows the 200V AC system power supply circuit. AC input voltage is rectified by diodes D10-D13, and the rectified DC voltage on the primary side of transformer T1 is switched by Q1 that is FET.
  • Page 138 Fig. 3.21 Control Panel PCB Circuit III - 20...

  • Page 139: Main Capacitor Charge Pcb Circuit

    MAIN CAPACITOR CHARGE PCB CIRCUIT APP-6 shows the main capacitor charge PCB circuit. This main capacitor charge PCB can variably set to 200V-345V DC voltage for 100V-230V AC, 50/60 Hz input from the charge/discharge control circuit on the main PCB. The set voltage is used to charge the capacitor that stores energy necessary to cause the xenon tube to emit light, as electric charges.

  • Page 140: Reflective Sensor Assy Circuit

    REFLECTIVE SENSOR ASSY CIRCUIT Fig. 3.23 shows the reflective sensor assy circuit. Fig. 3.23 Reflective Sensor Assy Circuit TRANSPARENT SENSOR ASSY CIRCUIT Fig. 3.24 shows the transparent sensor assy circuit. Fig. 3.24 Transparent Sensor Assy Circuit III - 22...

  • Page 141: Chapter Iv Troubleshooting

    CHAPTER IV TROUBLESHOOTING GENERALS This section provides a troubleshooting procedure for a machine failure. It is however impossible to foresee when and how a machine failure happens and is quite difficult to establish a troubleshooting procedure for a given machine failure. The troubleshooting procedure given here therefore lists only the limited cases.
  • Page 142 Cause of Electronic Error Error mode Checking method Cause Action Service manual No key-in is Is there a key Defective Replace the possible. pressed? control panel control panel PCB assy. PCB assy. Improperly Replace the attached control panel. control panel Defective #13 Replace the CHAPTER III...

  • Page 143: Control Panel Pcb Circuit

    Error mode Checking method Cause Action Service manual The automatic feed Does the Defective #19 Replace the CHAPTER III position of a draft automatic feed main PCB 1.19 sheet or an ID label position assy. Reflective Sensor can not be correctly detection Circuit detected.

  • Page 147: D. 100V Ac System Power Supply Circuit

    D. 100V AC System Power Supply Circuit APP - 4...

  • Page 148: E. 200V Ac System Power Supply Circuit

    E. 200V AC System Power Supply Circuit APP - 5...
  • Page 150 Sep., ’98 5V5014BE0 Printed in Japan...

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