Fujitsu ULTIMA90 Maintenance Manual
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Fujitsu ULTIMA90 Maintenance Manual

Fujitsu ULTIMA90 Maintenance Manual

Dot matrix printer
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ULTIMA90/ULTIMA90 +/Impact4550 Pro
DOT MATRIX PRINTER
MAINTENANCE MANUAL
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Summary of Contents for Fujitsu ULTIMA90

  • Page 1 ULTIMA90/ULTIMA90 +/Impact4550 Pro DOT MATRIX PRINTER MAINTENANCE MANUAL...

  • Page 2: Equipment Structure

    Tractor unit. (for a second tractor). LAN card. (only for the Centronics parallel + USB interfaces Models.) Large paper table. Small paper table Large stacker. The DL7600 has three emulations as follows. Fujitsu DPL24C PLUS IBM Proprinter XL24E Epson ESC/P2...
  • Page 3 1.2.3 Structure Major printer components are organized as shown below. Items in boldface are recommended spare parts (see Chapter 6) that can be replaced in field by maintenance service engineers. Replacement and adjustment are detailed in Chapter 4. DL7600 printer LAN CARD Cut-sheet feeder Tractor unit...

  • Page 4: Exterior Components

    Figure 1.2 Block Diagram of DL7600 (1)Exterior components This section gives information on exterior components of the printer: covers, removable mechanism units,etc.
  • Page 5 Front cover Ribbon cassette Print head Control panel Upper cover Power switch Interface connector Soundproof cover Tractor unit Front CSF connector Rear CSF connector Rear stacker Power connector Figure 1.3 Exterior components of DL7600 a. Interface Connector The interface cable connector is on the right side of the printer, as seen from the front of the upper cover, so the interface cable does not interfere with the paper feed path.
  • Page 6 RS232c Serial Connector Centronics parallel Connector Centronics parallel Connector LAN Connector Option Clip USB Connector The ferrite core that Comes with the LAN Card must be attached. Figure 1.4 Interface type of DL7600 b. Upper cover The bottom cover and the upper cover are fixed with a back screw. b.

  • Page 7: Printing Mechanism

    [LCD type] Figure 1.5 Control panel of DL7600 (2)Printing mechanism Ribbon cartridge Carriage Stay shaft Stepping motor for Carriage drive mechanism Print head HCPP motor...
  • Page 8 APTC mechanism Paper feed mechanism HCPP mechanism Figure 1.6 Mechanism of DL7600 The printing mechanism fit into the bottom cover. And Upper Cover holds it in position. a. Carriage The carriage supports the removable 24-wire print head, and slides left and right on the stay shaft. The ribbon feed gear system moves the ribbon in one direction regardless of carriage movement.

  • Page 9: Lower Cover

    There are six paper sensors for controlling paper feeding: Name Function Sensor type TOFL Detect the top edge for paper loading Photo reflectors TOFR -TOFL is for front loading -TOFR is for rear loading Detect left and right edge for area over control -TOFL is for left and right edge (small width paper) -TOFR is for right edge (large width paper) (Right and left are reversed for rear feed)

  • Page 10: Option And Consumables

    AC inlet Power supply unit ROM board Reactor only 200v) CSF connector AC inlet Lower cover Figure 1.7 Electric components of DL7600 a. Lower cover The Lower cover supports the printer mechanism and electric units as follows. b. ROM board (control board with flash ROM) The ROM board controls the host interface, control panel, and printing mechanism using an MPU and an LSI circuit.
  • Page 11 cut-sheet feeder allows both single-part cut sheets and multi-part cut sheets to be fed automatically. The SF94 single-bin feeder is available for DL7600. b. Tractor unit An additional tractor unit can be installed in the printer. Because the standard tractor unit is installed at the front of the printer at shipment, the additional tractor is installed at the rear of the printer.

  • Page 12: Chapter 2 Unpacking, Performance Check, And Connection

    CHAPTER 2 UNPACKING, PERFORMANCE CHECK, AND CONNECTION 2.1 Overview The DL7600 printer comes packed for transportation. After unpacking and before installation, the printer must undergo self-test printing. Installation requires minimum time and expense. 2.2 Notes on Installation For best results, note the following points when installing the paper: ・...
  • Page 13 2.3 Unpacking Unpacking the printer as follows(Figure 2.1) 1. Open the carton and remove Ribbon cartridge and Cushion L/R. 2. Lift up the printer using the grip at right and left of the printer. 3. Take out accessories (Power cord, Manual). Figure 2.1 Unpacking the printer and accessories 4.Open the front cover and remove the cardboard shipping restraint holding the carriage in place...
  • Page 14 Figure 2.2 Removing the shipping materials 6.Store the original shipping carton and packing materials for future use in moving or shipping the printer.

  • Page 15: Inspection After Unpacking

    2.4 Inspection after Unpacking 1. Carefully check assemblies and accessories for visible damage. 2. Install the ribbon cartridge. See the User’s Manual for details. 3. Check the rated voltage or the printer and AC power outlet, then connect the AC power cord between the printer and AC power outlet.

  • Page 16: Chapter 3 Troubleshooting

    CHAPTER 3 TROUBLESHOOTING This chapter helps pinpoint the causes of problems with the printer. Section 3.1 is a troubleshooting table. The table shows how to determine what is wrong with the printer and what to do to correct the problem. Section 3.2 explains error displays on the control panel that help clarify the cause of a problem.

  • Page 17: Problems At Power-On Initialization (Part 003/4)

    other lamps is performed but The host is defective. Check the host. the PAPER OUT lamp does not blink later. If the interface cable is disconnected, initialization is performed normally. The case of as stated above. The control board is Replace and initialize Initialization is not performed defective.

  • Page 18: Problems At Power-On Initialization (Part 004/4)

    Fire check alarm of ribbon feed Ribbon motor alarm is motor [LED type] detected. Also REMOVE PAPER A. The RF motor A. Connect the MENU2 lamps blink. connector is Connector correctly. [LCD type] disconnected. B. The RF motor is LCD displays as follows B.

  • Page 19: Problems Related To Printing(Part 002/2)

    2 [LED type] APTC Gap Alarm is detected The paper to be Replace the paper. (Use The PAPER OUT lamp [LED type] Printed on is too thick. paper of a thickness starts blinking. Also AUTO GAP and specified in the paper TRACTOR F lamps blink.

  • Page 20: Problems Related To Printing Result

    [LED type] Cut sheet leaved on the Remove the paper from REMOVE PAPER indicator paper table and printer the paper table. blinks. waiting removing it. [LCD type] Error message lighting. Massage : REMOVE PAPER 3.1.3 Problems related to printing result Symptom Cause Response...

  • Page 21: Problems Related To Print Quality (Part 001/2)

    3.1.4 Problems related to print quality (part 001/2) Symptom Cause Response 1 A dot is missing or an excess dot is printed. The print head is defective. Replace the print head. (See other items about blurring of the top or bottom The carriage cable is Connect the carriage cable of a character.)
  • Page 22 5 Printing is partly blank or the ribbon is out of place. • The manual paper • Adjust the manual paper thickness adjustment dial thickness adjustment dial is set improperly. (Because properly according to The ribbon is loose. the paper thickness setting paper thickness.

  • Page 23: Problems Related To Paper Feed (Part 001/2)

    3.1.5 Problems related to paper feed (part 001/2) Symptom Cause Response • The paper selection HCPP • Replace the HCPP motor. 1 Paper selection cannot be performed properly. motor does not work • Replace the HCPPSW • HCPPSW ASY is ASY.

  • Page 24: Problems Related To Paper Feed (Part 002/2)

    3.1.5 Problems related to paper feed (part 002/2) Symptom Cause Response 9 Paper skews or a paper jam occurs. • Paper is set improperly. • Set paper properly. • Paper is defective. • The • Replace paper manual paper thickness (with that conforming to adjustment dial is set the media specifications)

  • Page 25: Problems Related To The Control Panel

    3.1.6 Problems related to the control panel Symptom Cause Response 1 Switches on the control panel are disabled. • The printer is online. • Turn the printer offline. • The connection between • Connect the cable the control panel board properly, or replace the and control board is cable.

  • Page 26: Error Display

    3.2 Error Display This printer indicates errors on the control panel. There are three groups of errors as explained below. (1) Warning errors The buzzer sounds and the ONLINE indicator still lights. For a data transmission error in the interface, only the buzzer indicates the error. The printer continues printing unless placed offline or other groups of errors occur.
  • Page 27 [LED type] The PAPER OUT indicator is lighted. The buzzer sounds, the PAPER OUT indicator lights up, and the printer is placed offline when operation is required. [LCD type] The error message is displayed with LCD. The buzzer sounds, display the error name by the LCD displa ｙ , and the printer is placed offline when operation is required.
  • Page 28 Table 3.4 Fatal alarms displayed on control panel Lamp Condition of occurrence Alarm name    LRES alarm LRES could not be detected during the space initial operation. Space problem alarm    The shield board could not be detected normally by the LRES sensor.

  • Page 29: Chapter 4 Maintenance

    Table 3.5 Fatal alarms displayed on control panel Alarm name Condition of occurrence  LRES alarm FATAL! LRES could not be detected during the space initial LRES ALARM operation.  Space problem alarm FATAL! The shield board could not be detected normally by the SPACE ALARM LRES sensor.
  • Page 30 The printer also has the self-test print and hex dump functions to indicate whether an error is due to printer or the host and to test operation after error recovery. 4.2 Notes on USE Note the following: Do not connect or disconnect connectors or printed circuit boards while power is on. Use screwdrivers, wrenches, and other tools suited to the parts being replaced.

  • Page 31: Parts That Must Not Be Disassembled

    Ribbon cartridge Carriage SP Timing Belt Stay Shaft Card Guide Upper Angle SP Motor Print head Print Mechanism Unit Tractor Unit HCPP motor Figure 4.1 Part Drawings 4.7 Parts That must not be Disassembled This section gives the locations of parts that must not be disassembled. Table 4.2 lists components not to be disassembled and whose mounting screws are not to be loosened or removed.

  • Page 32: Level 1 Maintenance

    Print head Card Guide Upper stay screws Space motor pulley Front stay screws Rear stay screws Figure 4.2 Parts That must not be disassembled 4.8 Level 1 Maintenance Level 1 maintenance includes only cleaning and lubrication. These can be performed without removing covers although Figure 4.3 shows the printer with the covers removed.

  • Page 33: Level 2 Maintenance

    *1 If paper becomes smeared or dirty, clean the platen. Use a very small amount of alcohol and wipe with clean cloth. Print head Card guide Stay shaft Figure 4.3 Cleaning and lubrication 4.9 Level 2 maintenance Level 2 maintenance includes lubrication, adjustment, and parts replacement. Level 1 maintenance should be done at the same time.
  • Page 34 Product number KA02039- B103 B203 B11O B210 B117 B217 B219 B219 B228 B251 B115 B215 Item Description Parts number Section to be Interface P+USB P+RS P+USB P+RS P+USB P+RS P+USB P+RS P+RS P+RS P+USB P+RS referred to Revision 1 PR. MECHA ASY KA02039-D201 4.9.1(13) ○...

  • Page 35: Tractor Unit Replacement

    32 RELAY CABLE 35P KA02038-D231 4.9.1(25) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 33 CSF CONNECT PCA KA02038-D232 4.9.1(23,24) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 34 FRONT CSF CABLE KA02039-D225 4.9.1(23) ○...

  • Page 36: Installation

    Front feed tractor. Removal 1. Raise the paper table. 2. During pressing the Rock lever, Lift the left and right sides of the tractor unit, and then remove the tractor unit. Lock lever Soundproof cover Lock lever Figure 4.4 Front feed tractor Removal Installation 1.

  • Page 37: Cut Sheet Feeder Replacement

    1. During pressing the Rock lever, Lift the left and right sides of the tractor unit, and then remove the tractor unit. Figure 4.6 Rear feed tractor removal Installation 1. Engage the U-grooves on the left and right sides of the tractor unit with the counterpart pins on the printer. (fit the ditch of left pin, there is any ditch of the right pin) 2.
  • Page 38 Removal 1. Turn off the printer power. 2. Disconnect the cut sheet feeder cable. 3. Raise the paper table, then hold both ends of the cut sheet feeder and pull it off. Installation 1. Install the cut sheet feeder by reversing the removal procedure. 2.

  • Page 39: Stacker Plate Replacement

    3. Raise the stacker table, then hold both ends of the cut sheet feeder and pull it off. Installation 1. Turn off the printer power. 2. Raise the stacker plate, then engage the U-grooves on both ends of the cut sheet feeder with the mounting pins on the printer and lower the cut sheet feeder carefully.

  • Page 40: Stacker Unit Replacement

    2. Stretch the left and right sides of the stacker frame outward to disengage the stacker plate projections from the frame. Installation 1. Install the stacker plate by reversing the removal procedure. Stacker *1 Figure 4.10 Stacker Plate replacement (4) Stacker Unit replacement Removal...

  • Page 41: Soundproof Cover Replacement

    1. While pressing down the lock levers on the left and right sides of the stacker unit, pull out the stacker unit to the back of the printer. Installation 1. Install the stacker unit by reversing the removal procedure. Lock lever Stacker unit Lock lever Figure 4.11 Stacker Frame replacement...

  • Page 42: Lan Card Replacement

    Installation 1. Insert the left and right protrusions on the paper table ends into the grooves on the cover as shown in the following figure. 2. Set the paper table in the normal position. Figure 4.13 Soundproof cover Instillation (6) LAN card replacement Removal 1.

  • Page 43: Flap Replacement

    2. Remove the LAN card. Figure 4.14 LAN card removal Installation 1. Install the LAN card by reversing the removal procedure. Note; Take care to insert the card into the guide rail correctly. Setup of a LAN card is necessary. See the online manual in the CD of LAN card. Figure 4.15 LAN card Installation (7) Flap replacement Removal...

  • Page 44: Ribbon Cassette Replacement

    Figure 4.16 Flap replacement (8) Ribbon Cassette replacement Removal 1. Close the front cover, and turn the power on. Then the Print Head move to ribbon replace position. 2. Turn the power off. And open the front cover of the printer. 3.
  • Page 45 Operation panel R ibbon guide (green) Figure 4.17 Ribbon cassette removal Installation 1. Remove the new ribbon cassette from its package. Push in the two ribbon release tabs. The tabs snap into the cassette and the ribbon feed mechanism engages. 2.
  • Page 46 Figure 4.18 Ribbon cassette installation 3. Put the green ribbon guide into the space in front of print head. And then place the mounting pins (both side of ribbon cassette) on the slot of the printer cover. And then push the ribbon cassette so that the ribbon cassette is installed vertically.
  • Page 47 Push the ribbon cassette until it clicks. Mounting pin Mounting pin Print head Space Slot Slot Ribbon guide Figure 4.19 Ribbon cassette installation 4. Attach the green ribbon guide on the print head. Please make sure that the ribbon slack lightly. (If the ribbon is strained, it will quirk when installation.)Push the green ribbon guide until the triangle mark ”...

  • Page 48: Print Head Replacement

    7. Close the front cover of the printer. NOTE A Fujitsu ribbon cassette is recommended. Don’t use other cassettes. If other cassettes are used, operating problems or a damage of the print head may be caused. (9) Print head replacement At printing or after printing, print head is high temperature.
  • Page 49 the print head connector. Screws Print head FAN connector Print head Figure 4.22 Print head removal Installation 1. Connect the connector to the card edge of the print head. 2. Fit the mounting bosses of the print head into the holes on the carriage.
  • Page 50 3 . Connect the fan connector. FAN connector Print head Bosses of Print head Card edge Connector Note. Be carefully to insert the card edge straightly. Figure 4.23 Print head Installation 4. Fix the print head by two screws.. 5. Insert the fan cables under black plastic part. Note.

  • Page 51: Control Panel Unit Replacement

    (10) Control Panel Unit replacement Removal 1. Open the front cover. 2. Unhook the control panel case at three positions, then pull out the control panel unit to the front. 3. Disconnect cable from the control panel board. Installation 1. Install the control panel unit by reversing the removal procedure. Three hooks Figure 4.25 Control panel Unit replacement (11) Front Cover replacement...

  • Page 52: Upper Cover Replacement

    Figure 4.26 Front cover replacement (12) Upper Cover replacement Removal 1. Remove the control panel. 2. Remove the two screws securing the upper cover. 3. Raise the soundproof cover. 4. Disengage the hooks on the front left and right of the upper cover, then lift off the upper cover. 5.

  • Page 53: Print Mechanism Unit Replacement

    Upper cover Hook Hook Unhooking on the left Unhooking on the right Figure 4.27 Upper cover replacement (13) Print Mechanism Unit replacement Removal * Do this work on a no slippery level bench so that the mechanism can be tilted stably during replacement. On a slippery surface like paper, the printer may slide when the mechanism is tilted.
  • Page 54 finger is hung on portion of the side frame to L Bend. Figure 4.28 Print Mechanism Unit removal 5. Move the mechanism unit about 2cm to the right (when looking form back of the printer) and then put the rubber foots of the front of mechanism unit above the mounting projection of lower cover.
  • Page 55 Rubber foot Mounting projection Rubber foot Mounting projection Lower cover Figure 4.29 Print Mechanism Unit replacement 6. Keep the left hand holding side plate. and then move the right hand to the rear of the mechanism unit. Figure 4.30 Print Mechanism Unit replacement 7.
  • Page 56 Figure 4.31 Print Mechanism Unit replacement 9. Unplug cables from mechanism unit. (SP motor cable, LF motor cable, TR motor cable, RF motor cable, Carrier cable (3 flat cables), RCSF cable, Relay cable, INLK sw cable, CO sw cable, FAN2 cable, FAN3 cable, FAN4 cable. Total 14 cables) Remove the screws securing the FG cable 11.
  • Page 57 Note: To prevent that FG cable is trapped between mechanism unit and lower unit. The direction of FG cable is changed (from October 2009) to upper direction. Note: The following adjustments are required after installation: - Bi-directional printing positions - Auto loading position - Printing positions at paper end - Left printing start position - Skew detection...

  • Page 58: Fan Unit Replacement

    (14) FAN UNIT replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the two screws securing the FAN UNIT Installation 1. Install the power supply unit by reversing the removal procedure. Screws Figure 4.33 FNA UNIT replacement (15) Power Supply Unit replacement Removal 1.

  • Page 59: Rom Board (Main Board) Replacement

    Installation 1. Install the power supply unit by reversing the removal procedure. AC switch assembly Power supply unit connector Reactor connector Only 200V models) Screws Power supply unit Figure 4.34 Power Supply Unit replacement (16) ROM Board (Main Board) replacement Removal 1.

  • Page 60: Lan Relay Pca / Lan Cable 17P Replacement

    Mount the memory chip on the IC socket with the dent facing the printer cable connector. To reset the NVRAM see the procedure as follows. (Note, Resetting NVRAM requires adjustment and setting up. If you don’t know set up value don’t reset NVRAM) To all clear NVRAM ;...

  • Page 61: Ac Switch Asy Replacement

    LAN RELAY PCA Bracket Two LAN cables 17P Screw Screw Figure 4.36 LAN RELAY PCA / LAN CABLE 17P replacement (18) AC Switch ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the AC switch assembly from the lower cover. Installation 1.

  • Page 62: Inlet Asy Replacement

    AC switch assembly Red(upper side) White(lower side) Inlet ASY Rear side of Inlet AYS White wire Left side of Inlet AYS Upper side of Inlet AYS Red wire Figure 4.37 AC Switch ASY replacement (19) Inlet ASY replacement Removal 1. Remove the upper cover. 2.

  • Page 63: Reactor Replacement

    Screw Screws Inlet ASY Figure 4.38 Inlet ASY replacement (20) Reactor replacement Note Reactor used only 100-120V models. Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the two screws securing the reactor. 4. Disconnect the cable from the power supply and remove the reactor. Installation 1.

  • Page 64: Fan Unit 2 Replacement

    Screws Reactor Figure 4.39 Reactor replacement (21) FAN UNIT 2 replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the screws securing the FAN. 4. Remove the power cable from the cable clamp. 5. Remove the FAN UNIT 2 cable from ROM BOARD. 6.

  • Page 65: Control Panel Cable Replacement

    Cable clamp Screws Power supply unit connector ROM board Power supply unit cable FAN UNIT 2 Figure 4.40 FAN UNIT 2 replacement (22) Control Panel Cable replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the FAN UNIT 2. 4.
  • Page 66 ROM board Control Panel cable Figure 4.41 Control Panel Cable replacement Figure 4.42 bending size of control panel cable (23) F-CSF Cable/CSF Connector PCA replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the FAN UNIT 2. 4.

  • Page 67: R-Csf Cable/Csf Connector Replacement

    Screw Front CSF PCA Cable Figure 4.43 F-CSF Cable/Connector PCA replacement Bending the front CSF cable (KA02027-Y192) Figure 4.44 bending size of Front csf cable (24) R-CSF Cable/CSF Connector replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3.

  • Page 68: Relay Cable Replacement

    1. Install the rear CSF by reversing the removal procedure. Screw Rear CSF PCA Rear CSF cable Figure 4.45 R-CSF Cable/CSF Connector replacement Bending the rear CSF cable (KA02022-Y191) Figure 4.46 bending size of Rear csf cable (25) Relay Cable replacement Removal 1.

  • Page 69: Sensor Pca Replacement

    Installation 1. Install the relay cable by reversing the removal procedure. Sensor PCA Relay cable Figure 4.47 Relay cable replacement (26) Sensor PCA replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Disconnect the mechanism cable and flat cable from the sensor PCA connectors. 4.

  • Page 70: Sp Motor Asy Replacement

    Saddles Sensor PCA Flat cable Figure 4.48 Sensor PCA replacement (27) SP Motor ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the screws securing SP motor ASY. 4. While loosening the SP belt tension, remove the SP motor ASY. For details 1.

  • Page 71: Lf Motor Replacement

    SP Motor ASY Screws SP belt tension pulley Figure 4.49 Sp Motor ASY replacement (28) LF Motor replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the idle gear 4. Remove the screws securing LF motor 5. Remove the LF motor from inside of side frame. Installation 1.

  • Page 72: Tr Motor Replacement

    LF Motor Screws Idle Gear Figure 4.50 LF motor replacement (29) TR Motor replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the shift gear and shift spring. 4. Remove the two screws securing the TR motor. 5.

  • Page 73: Aptc Sw Asy Replacement

    Shift gear TR motor Screws Shift spring Figure 4.51 TR motor replacement (30) APTC SW ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Peel off the Stopper plate. 4. Remove the SW holder. 5.

  • Page 74: Rf Motor Replacement

    SW holder S topper plate Cross section S topper plate Side frame UL APTC SW ASY SW holder Figure 4.52 APTC SW ASY replacement (31) RF Motor replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 8.

  • Page 75: Aptc Motor Replacement

    RF motor Screws Figure 4.53 RF motor replacement (32) APTC Motor replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the E ring securing the gear B, and remove the gear B. 4. Remove the screw securing the SS gear , and remove the SS gear . 5.
  • Page 76 Side frame UL Gear B E ring SS gear Screw Figure 4.54 APTC Motor replacement Tension UNIT fixation screw Side frame UL Side frame UL fixation screw Screw Side frame UL fixation screw The back side of side frame UL...

  • Page 77: Fan Asy Replacement

    APTC motor fixation screw APTC motor Figure 4.55 APTC Motor replacement (33) FAN ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the two screws securing the FAN ASY , and remove the FAN ASY and FAN guard. Installation 1.

  • Page 78: Hcpp Motor Replacement

    Side frame UL FAN guard FAN ASY Screws See the attachment direction of FAN ASY from the printer front, and attach it with direction of the left figure. FAN arrow Figure 4.56 FAN ASY replacement (34) HCPP Motor replacement Removal 1.

  • Page 79: Sp Fan Unit Replacement

    HCPP Motor HCPP Gear Figure 4.57 HCPP Motor Screws - ring replacement (35) SP FAN UNIT replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the two screws securing the SP FAN UNIT , and remove the SP FAN UNIT. Installation 1.

  • Page 80: Inlk Sw Unit Replacement

    Screws SP FAN UNIT Figure 4.58 SP FAN UNIT replacement (36) INLK SW UNIT replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the two screws securing the INLK SW UNIT , and remove the INLK SW UNIT. Installation 1.

  • Page 81: Ps Pca Replacement

    Figure 4.59 INLK SW UNIT replacement (37) PS PCA replacement Removal 1. Remove the upper cover. 2. Release the PS PCA from the three hooks on the PS holder. 3. Disconnect the cable from the connector and remove the PS PCA. Installation 1.

  • Page 82: Hcpp Switch Asy Replacement

    PS PCA PS holder Cable Figure 4.60 PS PCA replacement (38) HCPP switch ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the rubber foot from side frame L, then unhook the holder at two locations. 4.

  • Page 83: Sensor Cover Tr/Tr Pes Asy Replacement

    Side frame L Holder HCPP SW ASY Rubber foot Figure 4.61 HCPP switch ASY replacement (39) Sensor cover TR/TR PES ASY replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Unhook the sensor cover TR and remove the sensor cover TR. 4.

  • Page 84: Card Guide Asy Replacement

    Sensor cover TR TRPES ASY Figure 4.62 Sensor cover TR/TR PES ASY replacement (40) Card Guide ASY replacement Removal 1. Remove the upper cover. 2. Remove the screws securing the upper guide F on its left and right, and release it to the front. 3.
  • Page 85 - Card guide attaching position - TOF sensor output - Auto loading position - Printing positions at paper end - Left printing start position Skew detection Relay cable Carrier holder Carrier unit Panel keyboard TOF L cable TOF R cable Card guide cable...

  • Page 86: Tof S. L/R Asy Replacement

    Figure 4.63 Card Guide ASY replacement (41) TOF S. L/R ASY replacement Removal 1. Remove the upper cover. 2. Remove the screws securing the upper guide F on its left and right, and release it to the front. 3. Remove the print head. 4.

  • Page 87: Carrier Unit And Stay Shaft Replacement

    (42) Carrier UNIT and Stay shaft replacement Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Release the SS gear, Gear B and Gear A. 4. Remove the screw securing the tension unit , and remove the tension unit. 5.
  • Page 88 angle. Head gap jig is necessary fasten them. Carrier unit Carrier cable holder Carrier cable Stay shaft Removing print head and card Upper guide F guide is necessary to remove carrier unit without removing upper angle. Carrier cable holder is behind the carriage.
  • Page 89 Installation 1. Install the card guide assembly by reversing the removal procedure. Carrier holder Carrier unit Relay cable Carrier holder Figure 4.67 Carrier Cable ASY replacement (44) SP Timing Belt replacement Removal 1. Remove the upper cover. 2. Remove the print head. 3.

  • Page 90: Ces Scale Replacement

    6. Remove the carrier cable ASY from the card holder. (Carrier cable holder is behind the carriage. Slide it to remove it.) Installation 1. Install the SP timing belt by reversing the removal procedure. The following adjustments are required: - Print head gap adjustment (for upper angle). (You may omit, when having not loosened the screw.) - Card guide position adjustment - TOF sensor’s voltage adjustment...

  • Page 91: Lf Timing Belt Replacement

    1. Install the CES scale by reversing the removal procedure. Figure 4.69 CES Scale replacement (46) LF Timing belt replacement Removal Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Put the mark to memory the LF tension bracket position. . 4.

  • Page 92: Platen Roll Replacement

    Installation Install the LF timing belt by reversing the removal procedure. 2. Install the LF tension bracket while aligning it with the marking and secure it with a screw. Note: After installation is finished, the following adjustment is required: LF belt tension LF timing belt LF tension bracket...
  • Page 93 6 . Remove the slide cam. Flange Platen gear DV gear LF belt LF tension bracket Pulley gear Slide cam Put the mark to memory its adjusted position Figure 4.71 Platen Roll replacement 7. Turn down the mechanism assembly. 8. Disconnect cables backside of printer mechanism unit, remove 6 screws of lower plate. 9.

  • Page 94: Nip Spring 1/2 Replacement

    Take care of jamming cables together when install platen cover. Figure 4.72 Platen Roll replacement Installation 1. Assembly by reverse order the removal. Note Lubrication is necessary to right and left shaft of Platen roll. (Refer to lubrication tables) (48) NIP Spring 1/2 replacement Removal 1.

  • Page 95: Nip Roller Asy Replacement

    NIP spring 1(silver) NIP spring 2(black) Figure 4.73 NIP Spring 1/2 replacement (49) NIP Roller ASY replacement [For the front side] Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Unhook one sides of 4 nip springs and remove 4 spring holders. 4.
  • Page 96 Spring holder NIP Roller ASY Front side Front side NIPspring Front side NIP gear Front side Figure 4.74 Nip Roller ASY replacement 5. Remove the SP FAN UNIT and plate. 6. Remove the flanges, slide cam, OC cam and bearings.. 7.

  • Page 97: Dv Roller Asy Replacement

    Spring holder NIP Roller ASY Rear side Rear side NIPspring Rear side NIP gear Rear side Figure 4.76 Nip Roller ASY replacement 5. Remove the SP FAN UNIT and plate. 6. Remove the flanges, slide cam, OC cam and bearings.. 7.
  • Page 98 2. Remove the printer mechanism assembly. 3. Remove the LF bracket (one screw) and LF belt. 4. Remove the two flanges (two E-rings), two DV gears, two NIP gears (two E-rings), and one platen gear (one E-ring) from the left side of the mechanism assembly. 5.
  • Page 99 Screw securing the lower guide Lower guide Figure 4.80 DV Roller ASY replacement 12. Remove the lower plate. Disconnect cables backside of printer mechanism unit, remove 6 screws of lower plate. 13. Slide the DV rollerr assembly direction of arrow, then remove it. 14.
  • Page 100 Removal 1. Remove the upper cover. 2. Remove the printer mechanism assembly. 3. Remove the LF bracket (one screw) and LF belt. 4. Remove the two flanges (two E-rings), two DV gears, two NIP gears (two E-rings), and one platen gear (one E-ring) from the left side of the mechanism assembly.
  • Page 101 Screw securing the lower guide Lower guide Figure 4.84 DV Roller ASY replacement 12. Remove the lower plate. Disconnect cables backside of printer mechanism unit, remove 6 screws of lower plate. 13. Slide the DV rollerr assembly direction of arrow, then remove it. 14.

  • Page 102: Print Head Gap Adjustment

    4.9.2 Adjustment (1) Print head gap adjustment Note: This adjustment needs the head gap adjustment jig (special dial gage), so this part is parts that must not be disassembled. If you don’t have head gap adjustment jig, don’t adjust this portion as much as possible. Procedure 1.

  • Page 103: Card Guide Position Adjustment

    5. Slightly loosen the three screws(a),(b) and (c) on the upper angle. Upper stay Upper angle Screw(a) Screw(b) Screw(c) Hole for adjustment Figure 4.88 Adjustment head gap A=0.00mm±0.01mm 6. Slide the carriage unit to the left end (1st column side) 7.
  • Page 104 Upper guide F Head gap adjustment jig Direction of moving card guide Figure 4.89 Attach the head gap adjustment jig 5. Enter adjustment mode Card guide Turn the power on while pushing “ ”SW Platen and “ ”SW of operation panel. Then printer enters the adjustment mode.
  • Page 105 Figure 4.91 Rotate SS gear A=0.27mm±0.01mm 8. Move the card guide up and down so that APTC SW should be switched into conducting state at the head gap is value A. (The value A should be checked during the SS gear is rotating in the direction of clockwise.) 9.

  • Page 106: Card Guide Position Adjustment (Another Way)

    Paper Platen Dial gage Head gap adjustment jig Paper Platen Figure 4.93 Check the gap after APTC operate (3) Card guide position adjustment (another way) [Without the head gap adjustment jig] This method uses the gear that is next to the motor pinion instead of head gap adjustment jig. This adjustment should be done after print head gap adjustment is finished.
  • Page 107 Screw Stopper 4. Rotate the motor pinion counterclockwise until stopper of SS gear touch against the stopper stud. Note Please make sure to rotate gears by motor pinion. Stopper Motor pinion MARK on side frame 5. Put the “MARK 1” as the base position. Put the “MARK 1”...
  • Page 108 7. Insert the 8 parts of paper into the right of card guide and platen. This spacer should be made as follows. Fold the A5 size paper 3 times. Total thickness of papers should be 0.65±0.1mm Paper tip insertion point 8.

  • Page 109: Tof Sensor's Voltage Adjustment

    (4) TOF sensor’s voltage adjustment Note This adjustment should be done after card guide adjustment is finished. Please make sure any dust has cleaned under the TOF sensors. 1. Turn the printer power on, then the carriage escape to the maximum gap and move and stop the ribbon replacing position.

  • Page 110: Vertical Alignment (V-Almnt) Adjustment

    1. Adjust the tension using tension bracket position, so that reaction force is value A when LF belt is lowered 2mm. LF belt Screw Tension bracket Value A = 250gf (2.45N 0.2N) Figure 4.97 adjusting LF belt tension (6) Vertical Alignment (V-ALMNT) adjustment 1.

  • Page 111: Top Of Forms Adjustment

    Note SW is detected when the cartridge turns each side of printing. So you must start pushing the SW before carriage turning and release the SW after carriage turning. If the carriage turns two times while pushing SW, adjustment value is added two steps. Check all lines (left, center, right) and correct adjustment if necessary.

  • Page 112: End Of Forms Adjustment

    Spec is 22±0.5 Required adjustment value is as follows D=A-22 No. of adjustment is as follows S=D÷(1/180”)=D÷0.14 Figure 4.99 adjusting top of form position 6. Load the paper again to adjustment. Push the “LOAD” SW to load the paper. 7. Adjust the load position Paper moves in the direction of the ▲,▼...

  • Page 113: Print Starting Positioning Adjustment

    Spec is 5.15 +0.75/-1.0 Required adjustment value is as follows D=A-5.15 No. of adjustment is as follows S=D÷(1/180”)=D÷0.14 Paper end Figure 4.100 adjusting end of form position 6. Load the paper again to adjustment. Push the “LOAD” SW to load the paper. 7.

  • Page 114: Skew Detection Value Adjustment

    Mark Spec is 68.3±1.0 Required adjustment value is as follows D=A-68.3 No. of adjustment is as follows S=D÷(1/90”)=D÷0.28 Inside of side frame Figure 4.101 adjusting print starting position 6. Load the paper again to adjustment. Push the “LOAD” SW to load the paper. 7.

  • Page 115: Aptc Detection Sensor Adjustment

    (11) APTC detection sensor adjustment Note. The error margin of the APTC sensor detection is automatically adjusted. [For LED type] 1. Enter adjustment mode. Turn the power on while pressing the “PRINT MODE/FRONT DIR”, “AUTO GAP” and “HI IMPACT”SW . 2.

  • Page 116: Upper Angle

    4.9.3 Lubrication Lubrication is required only when the printer is overhauled or mechanical components are replaced. Lubrication codes are as follows: 2 – GD – D – O Cycle Amount (1 drop) Type (Mobil oil) 1. No. Sequential number for the location to be lubricated 2.

  • Page 117: Hcpp Mechanism, Stud For Gear

    1- PR41-C-O Figure 4.102 upper angle lubrication (2) HCPP mechanism, Stud for gear Lubrication Amount Location Remarks cycle PR41 Hole of slide cam PR41 Cam surface PR41 OC lever L sliding section PR41 Axis of OC lever L/R PR41 Studs for shift gears 2 points (stud) PR41 Studs for LF gears...

  • Page 118: Detent For Dv Roller

    2 - PR4 1 - C - O 2 - PR41 - C - O 1 - PR41 - C - O 6- PR41-C-O PR41-C-O 3- PR41-C-O 4 - PR41 - C - O Figure 4.103 HCPP mechanism lubrication (3) Detent for DV roller Lubricati Amount Location...

  • Page 119: Bearing Lubrication

    NIP roller left side DV roller left side RP41-C-O Detent ( Mechanism to keep the RP41-C-O accurate rotation) Figure 4.104 Detent lubrication (4) Bearings Lubrication Amount Location Remarks cycle PR41 Bearings Nip and DV roller shaft Same as side frame R PR41 Bearings platen roller shaft Same as side frame R...

  • Page 120: Guide To Slide The Paper Table

    1- RP41-C - 2- RP41-C - Figure 4.106 Bearing of stay shaft, SS gear lubrication (6) Guide to slide the paper table Lubrication Amount Location Remarks cycle Guide rails of paper table. RP41 Studs for gears...

  • Page 121: Ribbon Drive

    1- KF-C-O 2- RP41-C-O 1- KF-C-O Figure 4.107 paper table slide guide lubrication (7) Ribbon drive Lubrication Amount Location Remarks cycle RP41 Gear bearing 2 points RP41 Gear bearing 1 points(Stud) RP41 Gear teeth 4 points...
  • Page 122 2- RP41-C-O 3- RP41-C-O 1-RP41-C-O...

  • Page 123: Carrier Unit

    Figure 4.108 Ribbon drive lubrication (8) Carrier unit Lubrication Amount Location Remarks cycle 1.2 ～ 1.3CC Oil felt section 1 - FL - F - O FL-F-O Note Don’t apply grease too much to the teeth. If excessive grease disperses, the slide of the stay shaft will occur and It will be breaking down early.

  • Page 124: Printing The Self-Test

    1- RP41-C-O 1- RP41-C-O Figure 4.110 Tension unit lubrication 4.10 Diagnostics This section describes how to use the following diagnostic functions: SELF-TST • HEX-DUMP • These functions are used for checking print quality and diagnosing printer problems. HEX-DUMP also provides useful information for programmers.

  • Page 125: Sample Self Test

    2-2. Select the SELF-TST function.(LCD) Repeatedly press the “ ” or “ ” button to display “SELFDIAGNOSTIC”. And then press the“ ” button to move lower layer. And then repeatedly press the “ ” or “ ” button to display “SELF-TEST”. And then press the “SELECT”...
  • Page 126 4.10.2 Hex dump The HEX-DUMP function prints data and commands in hexadecimal characters and abbreviated control codes. The IBM character set 2 is used for printing (see Appendix E). The HEX-DUMP function is useful for checking whether your computer is sending the correct commands to the printer and whether the printer is executing the commands correctly.

  • Page 127: Function Description

    Sample HEX-DUMP 4. Exit the HEX-DUMP function. Exit the HEX-DUMP function in either of the following ways: • To remain in setup mode, press the LF/FF button. The <<FUNCTION>> menu is then reprinted. For details on other functions, see other sections in this chapter. •...
  • Page 128 ▼ ▲ ● ● Offline Setup Mode ● Online Setup Mode ● Self Test Print Mode ● ● EEPROM DATA Print Mode ● ● HEX Dump Mode ● Vertical Alignment Mode ● TOF adjustment Mode ● PE adjustment Mode ● ●...
  • Page 129 ● TOF adjustment Mode ● PE adjustment Mode ● ● Left start position adjustment mode. ● ● Skew detect adjustment mode. ● ● ● Factory adjustment mode ● ● Sensor adjustment Mode ● ● ● All EEPROM Reset (Note 1, a) ●...

  • Page 130: Chapter 5 Principles Of Operation

    CHAPTER 5 PRINCIPLES OF OPERATION 5.1 Overview This section explains the principles of DL7600 operation. A microprocessor controls the following basic functions: Carriage drive Print head drive Paper feed Figure 5.1 Function sequence 5.2 Mechanical Operation 5.2.1 Printing Operation 5.2.1.1 Print head The print head consists of 24 wires in 12 rows.

  • Page 131: Spacing Operation

    Positions of wire dots viewed from the printing side Figure 5.2 Print head structure 5.2.1.2 Spacing operation Figure 5.3 shows spacing mechanism. Spacing operation is performed by the space motor (4-phase pulse motor) mounted on the right side of the side frame.

  • Page 132: Lres (Carriage Position) Detection

    Figure 5.3 Spacing mechanisms 5.2.1.3 LRES (Carriage position) detection The left and right carriage positions are detected using one LRES sensor provided on the back of the carriage and the left and right shield plates provided on the upper stay. The shield plates are different in length in the direction in which the carriage moves.

  • Page 133: Ribbon Feed Mechanism

    Figure 5.4 LRES detection 5.2.1.4 Ribbon feed mechanism Figure 5.5 shows the ribbon feed mechanism. The ribbon is fed by the rotation of the ribbon feed shaft. The ribbon feed mechanism is mounted at the left of the side frame. Ribbon feed motion turns the ribbon feed roller in a ribbon cassette to one way.

  • Page 134: Skew Detection

    Drive gear APTC motor SS gear ( pulse motor) Stay shaft) APTC HP SW Figure 5.7 APTC approach and escape mechanism <The paper surface detection switch on the left side of the card guide> The ceramic chip is pressed by the paper surface during print head approaches. And then panel keyboard SW is pressed by lever.

  • Page 135: Paper Feed Operation

    TOFL TOFR Card guide ASY Figure 5.9 APTC sensor structure 5.2.2 Paper Feed Operation 5.2.2.1 Paper path selection mechanism (HCPP) [LED type] [LCD type] Figure 5.10 Control panel The “PAPER PATH” button on the control panel is used to select cut sheet paper, front-fed continuous forms, and rear-fed continuous forms.
  • Page 136 PAPER PATH “TRACTOR F” “CUT SHEET” “TRACTOR R” STATE OF ROLLER Nip ROLLER F OPEN CLOSE CLOSE CLOSE CLOSE Nip ROLLER R CLOSE CLOSE CLOSE CLOSE OPEN What TR motor drives FRONT TRACTOR Nothing REAR TRACTOR What LF motor drives ROLLERS ROLLERS ROLLERS...
  • Page 137 Stud for shift gear F OC lever L OC lever R OC slide cam OC cam The rib which shift The rib which shift HCPP Motor the shift gear R the shift gear F Stud for shift gear R Figure 5.12 HCPP mechanism 5.2.2.2 Paper feed operation Figure 5.13 shows the driving system of the paper feed mechanism.
  • Page 138 Platen Nip roller gear front and rear DV gear front and rear OC cam Slide cam OC Lever PL idle gear Gear which drives front tractor. Timing belt Shift gear F HCPHP SW LF Motor Gear which drives Shift gear R TR Motor rear tractor.
  • Page 139 Figure 5.13 shows the paper feed mechanism for continuous forms. Continuous forms paper is loaded with its sprocket holes fitted to the pins on the paper feed tractor belt and is fed by transmitting TR motor power to the transmission mechanism to rotate the tractor belt. The paper fed by the front paper feed tractor is pulled by the first and second rollers driven by the LF motor.

  • Page 140: Paper Loading And Ejection Operation (Auto Loading)

    Nip roller Nip roller Entrance of front Entrance of rear paper pass paper pass PSS sensor DV Roller PL roller DV Roller photo reflector) Figure 5.15 Cut sheet feed mechanism 5.2.2.3 Paper loading and ejection operation (auto loading) Loading the paper is done automatically. <...

  • Page 141: Electrical Operation

    < Continuous forms ejection operation > Holding the pressing the LF/FF button on the control panel while paper is loaded sends the continuous forms forward. If 1 page has fed then stop. < Cut sheet loading operation (automatic cut sheet setting operation)> Operator push against the cut sheet to the feed roller, loading operation begins after 1.5 seconds since the PSS(Paper set sensor)changes from the “no paper”...

  • Page 142: Printed Circuit Boards And Basic Configuration

    5.3.1 Printed Circuit Boards and Basic Configuration Table 5.3.1 lists the printed circuit boards used in this printer. Alias of PC board Drawing number Major functions Main control circuit, drive circuit, interface Main board HGC07** KA21206-B**X driver/receiver circuit Control panel board Serial/parallel converter LSI, display CA21264-B91X lamps, control switches...
  • Page 143 FCNHD1 ５ Head cable connector Print head FCNHD2 ６ Space motor cable CNSP Space motor ７ Line feed motor cable CNMLF Line feed motor ８ Tractor motor cable CNTLF Tractor motor ９ Sheet feeder cable Sheet feeder connector board Front:CNFCSF Rear:CNRCSF Sensor board connection cable CNSEN...
  • Page 144 Figure 5.3.2 Main board peripheral configurations...
  • Page 145 Figure 5.3.3 Sensor board peripheral configuration Carr iage TOFR detection board Main board sensor HGC07** TOFL APTC gap sensor Head Encoder position sensor Figure 5.3.4 Carriage board peripheral configurations...

  • Page 146: Control Circuit Operation

    Figure 5.3.5 Internal circuit block diagrams 5.3.2 Control Circuit Operation 5.3.2.1 Printer Special Controller (MB91110) Figure 5.3.6 is an MB91110 internal block diagram.

  • Page 147: Memory Circuit Control

    F R30 core External interrupt UART Control Noise INPRM,EXPRM resistant external Reception interrupt 16- bit timer For head control Chip select For peripheral LSI, ROM Address decoder Chip select DRAM control data Kanji low column data DRAM control converter Conversion 10- bit +40 V detection A/D converter...
  • Page 148 Figure 5.3.7 Memory control block diagram The MB91110 has the chip select address decoder circuits for memory control as shown in Figure 5.3.7 [Chip select address decoder] The chip select address decoder decodes addresses and outputs a chip enable signal to ROM. The memory circuit consists of four types of elements, SRAM, PROGRAM ROM, and EEPROM as shown in Figure 5.3.7.
  • Page 149 00C00000 to 00FFFFFF 4M bytes Program ROM 2 01000000 to 01DFFFFF 14M bytes Reserved 01E00000 to 01FFFFFF 2K bytes External RAM Table 5.3.2 Memory map...

  • Page 150: Centronics Controller

    5.3.2.3 Centronics Controller Figure 5.3.8 is an interface control block diagram. Buffe FPGA DSTB,DATA1: Centronics Centronics AFXT,SLCTI control ACK,BUSY,P SLCT,FAUL Driver RINF1 3 Centronics receive interrup INPRM,EXPRM Figure 5.3.8 Interface control block diagram [Centronics interface control] The Centronics interface controller uses the Centronics controller built in the FPGA as shown in Figure 5.3.8 The INPRM and EXPRM signals, which are forcible reset signals from the host, are used as interrupt signals after noise is removed from them by sampling in the anti-noise interrupt control circuit.
  • Page 151 *DSTB BUSY *ACK Data reading Interrupt to Figure 5.3.9 Interface timing chart...

  • Page 152: Lan Interface

    5.3.2.4 The MPU(MB89585) has the following main functions USB 8bit controller LSI3 MB89585) HOST D+,D- UNEGO URESET VBUS USBRQ UDATA1- UPRTRQ RQSTATUS Figure 5.3.10 MB89585 block diagram (3) USB interface USB interface signal Signal name Function VBUS Power Data transfer Data transfer Shell Shield...
  • Page 153 RXI+ input Data transfer- Specifications ・ A transfer mode: 10/100BASE...
  • Page 154 5.3.3 Head Control LSI (LFE2-12E-5FN484C) Figure 5.3.11 and 5.3.12 is a head/motor control FPGA block diagram. Figure 5.3.11 Head/motor control FPGA block diagram...

  • Page 155: Control Panel Control

    Figure 5.3.12 Head/motor control LSI block diagram 5.3.4 Control Panel Control Figure 5.3.13 is a control panel controller block diagram.

  • Page 156: Motor Control And Drivers

    Main board (HGC07**) MB91110 External Control panel board (GAO99BA/LCD02BA) LFE2-12E-5FN484C Switch Parallel input -> serial cone r sion LCD/ LED Serial input -> parallel conve r sion Figure 5.3.13 Control panel control block diagram Switches and LCD/LEDs are provided on the control panel board. These switches and LEDs are controlled by serial-parallel conversion by the MPLSI (MBCG47492-502PF-G) mounted on the control panel.
  • Page 157 Figure 5.3.14 Motor controller block diagram [Space, line feed, tractor, CSF, APTC, and ribbon motor drive circuits] Figure 5.3.15 shows a block diagram of the control and drive circuits for the standard motors in the printer. +40V...
  • Page 158 Figure 5.3.15 Block diagram for various motor control and drive circuits The space motor is rotated as follows: The MPU reads phase excitation data from ROM. The rotation direction and initial excitation phase are set in the FPGA control register of the stepping motor control circuit and simultaneously current specification data is written to the current specification register as needed.
  • Page 159 An internal interrupt is caused to the MPU every step and, when needed, the excitation time and current specification data are changed to FPGA control the stepping motor. Figure 5.3.16 shows the space motor drive circuit. Figure 5.3.16 Space motor drive circuit The space motor uses a constant current drive circuit as shown in Figure 5.3.16 The constant current drive circuit and drive FET used exclusively for motor driving.
  • Page 160 Figure 5.3.17 Uni-polar motor drive circuit [Ribbon motor drive circuits] The 4-phase ribbon motor (Bi-polar stepping motor) are controlled by the constant current drive circuit shown below. +40V...
  • Page 161 Figure 5.3.18 Bi-polar motor drive circuit [Error detection circuit] ] Over current detection If the space motor, line feed motor, or tractor motor current exceeds the respective absolute rated value, an over current detection signal is sent to the FPGA. After a given period of the receipt of the detection signal, the FPGA controls the POWST signal to turn off +40 V.

  • Page 162: Print Head Driver

    [CSF short-circuit protection circuit] If abnormal current flows to +40V for some reason, the fuse is blown to prevent +40 V from being supplied from the main board (HGC07**). +40V APTC motor APTC motor FPGA FPGA drive circuit APTCM0-3 FE2-12E-5FN484C Open/close motor Open/close motor rive...
  • Page 163 Figure 5.3.20 Print head drive circuit Print head drive circuit control] The controller (MB91110) reads print data from SRAM. The data is set on the FPGA print control circuit. At this point, printing does not begin yet. The MPU sets the excitation time (T1) and flyback absorption time (T2) in the FPGA. The MPU outputs print timing signal TIMER1.

  • Page 164: Fire Check

    After the specified excitation time has elapsed, the print head drive transistor is turned off and a flyback absorption signal (FLYBK1-24) is output to activate the absorption circuit. ] After the specified flyback absorption time has elapsed, the absorption circuit is turned off. TIMER1 PDV1-24 (main excitation) FLYBK1-24...

  • Page 165: Power Supply

    5.3.7.3 Spacing Error A space alarm occurs if a space error is detected during spacing operation. A predetermined pulse signal is applied to the space motor but the left-end sensor shows no change. （ The sensor freezes in detection state or detects nothing.） Printer column management is abnormal;...

  • Page 166: Switching Regulator

    5.3.8.1 +5 V Switching Regulator This circuit consists of a one-stone ringing choke converter (RCC) using a hybrid regulator. Two types of power, +5 and +40 V, are output from one transformer. The circuit has the following functions: Self-excitation switching control When AC power is input, the circuit automatically starts oscillation.

  • Page 167: Surge Current Controller

    Figure 5.3.22 Power supply circuit block diagram 5.3.9. Surge Current Controller Surge current caused at power-on is controlled by the power thermistor (NTC thermistor) on the power supply board. This section explains the surge current controller. At power-on The power thermistor is directly connected to the power supply input line and normally has several ohms of resistance when power is turned on.
  • Page 168 This resistance suppresses surge current at power-on. During printer operation Because the power thermistor heats by itself by input current during printer operation, resistance is lowered down to about one-tenth of its initial value to reduce loss. When power is turned on again If the power is turned on again immediately after it is turned off, the power thermistor is still warm and may have less suppression effects, and surge current exceeding the specified level may flow.

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Ultima90 +Impact4550 proDl7600

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