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Digital Equipment LG06 Maintenance Manual

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LG06
Text and Graphics Printer
Maintenance Manual
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Order Number: EK–ELG06–MG

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Summary of Contents for Digital Equipment LG06

  • Page 1 LG06 Text and Graphics Printer Maintenance Manual ™ Order Number: EK–ELG06–MG...
  • Page 2 LG06 Text and Graphics Printer Maintenance Manual Order Number: EK–ELG06–MG Digital Equipment Corporation • Merrimack, NH 03054...
  • Page 3 All Rights Reserved The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document.

  • Page 4: Table Of Contents

    Table of Contents Maintenance Overview About This Manual ......... 1–2 Related Documents .
  • Page 5 Ribbon Stall ..........3–14 Shttl Cover Open .
  • Page 6 Circuit Breaker ......... 5–18 Control Panel Assembly .
  • Page 7 Appendices A: Printer Configuration B: Printer Specifications C: Torque Table D: Cable Interconnections and Hammer Bank Wiring E: Principles of Operation F: Ferrite Noise Suppression Cores Index...

  • Page 8: Maintenance Overview

    Maintenance Overview Chapter Contents About This Manual ..........1–2 Related Documents .

  • Page 9: About This Manual

    About This Manual This manual explains how to maintain and repair the LG06 printer at the field service level of maintenance. This manual covers alignments and adjustments, preventive and corrective maintenance, troubleshooting, and basic principles of operation. Related Documents Information about operating the LG06 printer is in the User’s Manual.

  • Page 10: Printing Conventions In This Manual

    Printing Conventions in This Manual Switches and indicators labeled on the printer are printed uppercase in this manual. Example: “Press the ON LINE switch to take the printer off–line.” If a control is not labeled on the printer, it is printed lowercase. Example: “Set the forms thickness lever to the fully open position.”...

  • Page 11: Controls And Indicators

    Controls and Indicators The locations of the printer cover, cabinet doors, and operator control panel are shown in Figure 1–1. Electrical controls and indicators are described in Table 1–1 and illustrated in Figure 1–2. Mechanical controls and indicators are described in Table 1–2 and illustrated in Figure 1–3.
  • Page 12 Printer Cover Lift to open Operator Control Panel Rear Door See Detail (Not shown) Hinged on left. Magnetic latch. Open by pulling right edge. Floor Cabinet Front Door Hinged on left. Magnetic latch. Open by pulling right edge. Operator Control Panel CLEAR PREV NEXT...
  • Page 13 Table 1–1. Electrical Controls and Indicators Switch or Function Indicator NOTE: Only the ON LINE switch operates when the printer is on–line. All other switches operate only in the off–line state. = On O = Off Turns printer on and off. Switch is also a circuit breaker.
  • Page 14 (On) (Off) Power Switch Message Display Status Lamps CLEAR PREV NEXT SET TOF ON LINE VIEW ENTER DOWN Raise Printer Cover to Access These Switches CLEAR PREV NEXT SET TOF ENTER DOWN Figure 1–2. Electrical Controls and Indicators Maintenance Overview 1–7...
  • Page 15 Table 1–2. Mechanical Controls and Indicators Control or Indicator Function (See Figure 1–3) Forms thickness Sets platen for paper and forms of different thick- lever nesses. Must be fully opened (raised) to load paper. Forms thickness Indicates relative thickness of forms or paper. Set the forms thickness lever at A for thin (single–part) forms, pointer and scale B for thicker forms, and so on.
  • Page 16 Left Tractor Door Horizontal Adjustment Knob Right Tractor Door Tractor Lock Vertical Position Tractor Knob Lock Forms Thickness Lever and Scale Forms Thickness Pointer Figure 1–3. Mechanical Controls and Indicators Maintenance Overview 1–9...

  • Page 17: Tools, Test Equipment, And Supplies

    Tools, Test Equipment, and Supplies The tools, test equipment, and supplies required for field level maintenance of LG06 printers are listed in Table 1–3. Table 1–3. Tools, Test Equipment, and Supplies Item Part No. ™ (adhesive, methacryl) Adhesive, Loctite 101854–002 Alcohol, anhydrous (must contain no water) –...

  • Page 18: Scheduled Maintenance

    Scheduled Maintenance Chapter Contents Preventive Maintenance Checks and Services (PMCS) ....2–2 Inspecting the Printer ..........2–3 Cleaning the Printer .

  • Page 19: Preventive Maintenance Checks And Services (Pmcs)

    Preventive Maintenance Checks and Services (PMCS) Perform preventive maintenance checks and services (PMCS) every six months or after every 1000 hours of operation, whichever comes first. Do these checks more often if the printer is used for heavy–duty, continuous printing or if is located in a dusty area. PMCS are listed in Table 2–1.

  • Page 20: Inspecting The Printer

    Inspecting the Printer Correct any condition found during inspection that could affect printer performance or reliability. Table 2–2. Physical Inspection Item(s) to Inspect What to Look For Check for damage, cracks, breaks, dents, gouges, scratches, Cabinet, base, delamination, warping, corrosion, and proper finish. frame Inspect fasteners for thread damage, corrosion.

  • Page 21: Cleaning The Printer

    Cleaning the Printer CAUTION Do not use abrasive cleaners, particularly on the window. Do not drip water into the printer. Damage to the equipment will result. When using spray solutions, do not spray directly onto the printer; spray the cloth, then apply the dampened cloth to the printer.
  • Page 22 11. Wipe the lower cabinet interior with a clean, lint–free cloth dampened with water and mild detergent or window cleaning solution. 12. Dry the cabinet interior with a clean, lint–free cloth. 13. Clean the shuttle assembly (page 2–6). 1. Forms Thickness Lever 2.
  • Page 23 Cleaning the Shuttle Frame Assembly (Figure 2–2) Remove the shuttle cover assembly (page 5–24). Remove the shuttle frame assembly (page 5–66). Remove the paper ironer (page 5–44). WARNING Over time, the upper edge of the paper ironer can become sharp. To avoid cutting yourself, handle the paper ironer on the sides.
  • Page 24 Hammer Tip Thin plate Thick plate Hammer Bank Cover Assembly Roll pin (2) (Not shown) Figure 2–2. Cleaning the Shuttle Frame Assembly Scheduled Maintenance 2–7...
  • Page 25 Cleaning the Card Cage Fan Assembly (Figure 2–3) Open the printer cover. Remove the paper guide assembly (page 5–42). Vacuum the card cage fan assembly (1) and surrounding areas to remove paper particles, dust, and lint. Install the paper guide assembly (page 5–42). Close the printer cover.

  • Page 26: Troubleshooting

    Troubleshooting Chapter Contents Introduction ........... . 3–2 Fault Messages .

  • Page 27: Introduction

    Introduction This chapter contains procedures for troubleshooting printer malfunctions. You must operate the printer to check printer performance, so have the User’s Manual at the printer site. Although diagnostic test procedures are covered in this chapter, basic printer operation is not covered. Fault Messages This section lists the fault messages that can appear on the control panel display.
  • Page 28 Instruction Indication — Step 5. — Disconnect cable assembly W1, CCB/Mech Driver, from connector J1 on the CCB and connector J6 on the Mech Driver board. Card cage fan comes on. Replace the Reattach cable Power up the printer. common controller assembly W1, PCBA (page CCB/Mech Driver,...

  • Page 29: Dynamic Ram Fault

    Dynamic RAM Fault * Instruction Indication “Dynamic RAM Fault * ” Step 2. Return printer to Set power switch to O (off). message. normal operation. Wait 15 seconds. Set power switch to 1 (on). “Dynamic RAM Fault * ” Step 3. Return printer to Disconnect the input data line message.

  • Page 30: Ham. Bank Hot

    Ham. Bank Hot * Instruction Indication “Ham. Bank Hot * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Ham. Bank Hot * ” message. Step 3.

  • Page 31: Ham. Coil Open

    Ham. Coil Open * Instruction Indication “Ham. Coil Open * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Ham. Coil Open * ” message. Step 3.

  • Page 32: Ham. Coil Short

    Ham. Coil Short * Instruction Indication “Ham. Coil Short * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Ham. Coil Short * ” message. Step 3.

  • Page 33: Ham. Drv. Short

    Ham. Drv. Short * Instruction Indication “Ham. Drv. Short * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Ham. Drv. Short * ” message. Step 3.

  • Page 34: Mech Driver Hot

    Mech Driver Hot * Instruction Indication “Mech Driver Hot * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Mech Driver Hot * ” message. Step 3.

  • Page 35: Mech Driver Link

    Mech Driver Link * Instruction Indication “Mech Driver Link * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Mech Driver Link * ” message. Step 3.

  • Page 36: Paper Jam

    Paper Jam Instruction Indication Paper path is clear. Step 2. Remove paper Inspect paper path for and go to step 2. bunched, torn, folded paper or labels. Debris found. Gently remove Step 3. Inspect the narrow paper or lint passageway between the particles with a face of the platen and the wooden stick or...

  • Page 37: Paper Out

    Paper Out Instruction Indication Step 2. — — Load paper. “Paper Out” message. Replace paper Return printer to Run a diagnostic self–test detector switch normal operation. (page 3–26). assembly (page 5–76). Go to step “Paper Out” message. Replace the Return printer to Run a diagnostic self–test intermediate cable normal operation.

  • Page 38: Platen Open

    Platen Open Instruction Indication Step 2. — — Load paper. Step 3. — — Close forms thickness lever. “Platen Open” message. Replace platen Return printer to Run a diagnostic self–test interlock switch normal operation. (page 3–26). assembly (page 5–78). Troubleshooting 3–13...

  • Page 39: Ribbon Stall

    Ribbon Stall Instruction Indication Forms thickness lever is set Step 2. Readjust the Check that forms thickness correctly. setting of the lever is not closed too tightly; forms thickness this can jam the ribbon and lever. Go to step shuttle. “Ribbon Stall”...

  • Page 40: Shttl Cover Open

    Shttl Cover Open Instruction Indication Shuttle cover damaged. Replace the Step 2. Inspect shuttle cover for shuttle cover warping, damage, or missing assembly (page magnet. (The magnet covers 5–24). the sensor housing when the cover is installed.) Shuttle cover installed correctly. Step 3.

  • Page 41: Shuttle Jam

    Shuttle Jam Instruction Indication Forms thickness lever set Step 2. Set forms Check the forms thickness correctly. thickness lever for lever: if it is set too tightly, it thicker paper. Go can slow the shuttle enough to step 2. to trigger the fault message. “Shuttle Jam”...

  • Page 42: Software Error

    Software Error * Instruction Indication “Software Error * ” message. Step 2. Return printer to Set power switch to O (off). normal operation. Wait 15 seconds. Set power switch to 1 (on). “Software Error * ” message. Step 3. Problem is not in Disconnect the input data line the printer.

  • Page 43: Symptoms Not Indicated By Fault Messages

    Symptoms Not Indicated by Fault Messages Troubleshoot malfunctions not indicated by fault messages using standard fault–isolation techniques: Debrief the operator for a general description of the problem. Verify the fault by running diagnostic self–tests or replicating conditions reported by the user. Locate the malfunction using the half–split method: a.

  • Page 44: Troubleshooting Aids

    Troubleshooting Aids • Printer Confidence Check (page 3–20). This procedure systematically checks basic printer operations and functions. Use it to establish basic printer status or for troubleshooting imprecise or intermittent symptoms. • Diagnostic Check of Microprocessors (page 3–21). This procedure checks processor operations on the printed circuit board assemblies (PCBAs).

  • Page 45: Printer Confidence Check

    Printer Confidence Check Instruction Indication Power cable installed correctly Step 2. Connect printer to Check that printer is plugged to proper source. correct power into correct power source. source. (Ref.: User’s Manual) Printer operates correctly. Fault is not in the Step 3 Disconnect the interface printer.
  • Page 46 Diagnostic Check of Microprocessors This procedure checks the operation of the microprocessors and IC chips on the Common Controller (CCB) and Mechanism Driver boards. Do the steps in the order presented. Set the power switch to O (off). Remove the paper guide assembly (page 5–42). Reseat the CCB and Mech Driver boards in the card cage.
  • Page 47 CCB (page 5–46), and check that all ROM chips are inserted in the correct position and with all pins inserted correctly. This check will catch out–of–order ROMs and all single and multiple bit failures of floating–gate EPROMs (the type with the window, that erase with ultraviolet light).
  • Page 48 cable to connector J3 on the CCB, and start over at step 1. If the display is still blank, or has a black line, and the 68010 LED lights and turns off, the control panel or its cable are defective. b.
  • Page 49 printer. A break–out box works, but will not debug XON/XOFF or other RS–232 data protocols. If the printer is sending XOFF, the host may not be receiving it if it requires 1.5 or 2 stop bits. e. If the printer prints from the host, but occasionally prints double characters, there is probably a noise problem at the interface or the host computer is sending an inverted strobe.
  • Page 50 on the CCB at C12 and D12, especially if they are absent. Garble can also result from failed termination resistors or parallel logic, but this is rare. The 68010 LED never lights. The 68010 has not run its first instruction. a.

  • Page 51: Diagnostic Self-Tests

    c. If the display reads “Diagnostic Tests in Progress” and 68010 LED has been on for 20 seconds or more but is not blinking, it means the 64180 cannot communicate with the 8032 on the Mech Driver board. Turn off the printer, reseat the cable in J2 of the CCB and on the Mech Driver board.
  • Page 52 • Es plus TOF A pattern of all Es followed by a form feed to the next page top of form, useful for identifying paper motion or feeding problems. Hammer bank cover Power supply PCBA Mechanism Driver PCBA Paper motion sensor or cable Paper feed belt or motor Splined shaft bearings Tractors or tractor belts...

  • Page 53: Running The Diagnostic Self-Tests

    Press UP and DOWN simultaneously to unlock the ENTER switch. Raise the printer cover. Press DOWN. “Emulation/LG06” displays. Press NEXT until “Emulation/Self–Test” displays. Press ENTER to select self–test. “Emulation/Self–Test * ” displays. To select one of the tests, press DOWN, then press NEXT or PREV until the appropriate test displays.

  • Page 54: Hex Code Printout

    Press on–LINE again to stop the hex dump. The display reads “Off–line/Emulation”. 10. Press DOWN. “Emulation/LG06” displays. 11. Press ENTER to reselect LG06 emulation. “Emulation/LG06 * ” displays. 12. Simultaneously press the UP and DOWN switches to lock the ENTER switch.
  • Page 55 3–30 Troubleshooting...

  • Page 56: Adjustment Procedures

    Adjustment Procedures Chapter Contents Preparing the Printer for Maintenance ....... 4–2 Adjustments .

  • Page 57: Preparing The Printer For Maintenance

    Preparing the Printer for Maintenance WARNING Unless otherwise directed, do adjustment procedures with the printer disconnected from the power source. Failure to remove power could result in injury to personnel or damage to equipment. The procedures in this chapter are written assuming the printer has been prepared for maintenance.
  • Page 58 1. Shuttle Cover 2. Screw, Button–Head (3) 3. Paper Scale Figure 4–1 . Paper Scale Adjustment Adjustment Procedures 4–3...
  • Page 59 Open the printer cover. Press the UP and DOWN switches simultaneously to unlock the ENTER switch. “Unlocked” appears briefly on the display. Press the DOWN switch. “Emulation/LG06” appears on the display. Press NEXT (or PREV) until “Emulation/Self–Test” appears on the display.
  • Page 60 NEEDS CORRECT NEEDS ADJUSTMENT ADJUSTMENT Figure 4–2 . Hammer Phasing Adjustment Adjustment Procedures 4–5...
  • Page 61 Paper Feed Timing Belt Adjustment (Figure 4–3 ) Prepare the printer for maintenance (page 4–2). Open the printer cover. Remove the timing belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the motor mount bolts (2).
  • Page 62 1. Timing Belt Shield 2. Motor Mount Bolt (2) 3. Paper Feed Drive Motor Figure 4–3 . Paper Feed Timing Belt Adjustment Adjustment Procedures 4–7...
  • Page 63 Platen Open Belt Adjustment (Figure 4–4 ) Prepare the printer for maintenance (page 4–2). Open the printer cover. Remove the platen open belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the motor mount screws (2).
  • Page 64 1. Belt Cover 2. Motor Mount Screw 3. Platen Open Pulley 4. Left Ribbon Guide 5. Set Screw 6. Platen Open Motor Figure 4–4 . Platen Open Belt Adjustment Adjustment Procedures 4–9...
  • Page 65 Paper Drive Motor Pulley Alignment (Figure 4–5 ) Prepare the printer for maintenance (page 4–2). Open the printer cover. Remove the timing belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the set screw (2) in the motor pulley collar (3).
  • Page 66 1. Belt Shield 2. Set Screw 3. Motor Pulley Collar 4. Motor Pulley 5. Splined Shaft Pulley Figure 4–5 . Paper Drive Motor Pulley Alignment Adjustment Procedures 4–11...
  • Page 67 Platen Open Motor Pulley Alignment (Figure 4–6 ) Prepare the printer for maintenance (page 4–2). Open the printer cover. Remove the platen open belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the set screw (2) in the motor pulley collar.
  • Page 68 1. Belt Cover 2. Set Screw 3. Platen Open Motor Pulley 4. Platen Shaft Pulley Figure 4–6 . Platen Open Motor Pulley Alignment Adjustment Procedures 4–13...
  • Page 69 Splined Shaft Skew Adjustment (Figure 4–7 ) If lines of print are not parallel with the edge perforations on the paper, perform the following adjustment. Prepare the printer for maintenance (page 4–2). Loosen the screw (1) securing the adjusting link (2). Adjust the link (2) to obtain print parallel with paper perforations.
  • Page 70 1. Screw 2. Adjusting Link Figure 4–7 . Splined Shaft Skew Adjustment Adjustment Procedures 4–15...
  • Page 71 Platen Angle Adjustment (Figure 4–8 ) Prepare the printer for maintenance (page 4–2). Remove the shuttle cover (page 5–24). Close the forms thickness lever (1) all the way. Install the platen position gauge (P/N 996083) (2) and check the angle of the platen (3).
  • Page 72 1. Forms Thickness Lever 2. Platen Position Gauge (P/N 996083) 3. Platen 4. Clamp Screw 5. Setscrew Figure 4–8 . Platen Angle Adjustment Adjustment Procedures 4–17...
  • Page 73 Platen Gap Adjustment (Figure 4–9 ) Prepare the printer for maintenance (page 4–2). Open the printer cover. Remove the shuttle cover assembly (page 5–24). Remove the ribbon. Raise the forms thickness lever (1) to the fully open position. CAUTION Do not force the platen against the feeler gauge. Damage to the printer will result.
  • Page 74 1. Forms Thickness Lever 2. Feeler Gauge (0.010 inch) 3. Platen 4. Ribbon Mask 5. Set Screw (2) NOTE: Left side adjustment shown. Right side is the same. Figure 4–9 . Platen Gap Adjustment Adjustment Procedures 4–19...
  • Page 75 Ribbon Guide Alignment (Figure 4–10 ) Open the printer cover. Load paper and install the ribbon. The ribbon should have a full spool on the right hub (1). Run a shuttle and ribbon diagnostic self–test (page 3–26). Momentarily short between the left ribbon guide skid screws (2) to assure right to left motion of the ribbon.
  • Page 76 1. Right Hub 2. Screw, Left Ribbon Guide Skid (2) 3. Ribbon 4. Ribbon Guide, Left 5. Screw, Retaining (2) 6. Left Spool 7. Ribbon Guide, Right Figure 4–10 . Ribbon Guide Alignment Adjustment Procedures 4–21...

  • Page 77: Returning The Printer To Normal Operation

    Returning the Printer to Normal Operation Load paper. Install the ribbon. Close floor cabinet doors and the printer cover. Connect the ac power cord to the power source and the printer. Set the power switch to 1 (on). Test printer operation by selecting and running one of the diagnostic self–tests (page 3–26).

  • Page 78: Belt, Paper Feed Timing

    Replacement Procedures Chapter Contents Replacement Procedures ......... . 5–3 Preparing the Printer for Maintenance .
  • Page 79 PCBA, Mechanism Driver ........5–48 PCBA, Power Supply .

  • Page 80: Replacement Procedures

    Replacement Procedures CAUTION The components specified in this chapter are replaced in the field, but must be repaired at the factory. Do not attempt field repair of these items. This chapter contains illustrated removal/installation procedures for components replaceable at the field service level of maintenance. The page locations of all removal/installation tasks are listed on pages 5–1 and 5–2.
  • Page 81 Belt, Paper Feed Timing (Figure 5–1 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the timing belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the paper feed motor mount bolts (2).
  • Page 82 1. Timing Belt Shield 2. Motor Mount Bolt (2) 3. Paper Feed Timing Belt (P/N 29–29283–01) 4. Motor Pulley 5. Splined Shaft Pulley 6. Paper Feed Drive Motor Figure 5–1 . Belt, Paper Feed Timing, Removal/Installation Replacement Procedures 5–5...
  • Page 83 Belt, Platen Open (Figure 5–2 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the platen open belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the motor mount screws (2).
  • Page 84 1. Belt Cover 2. Motor Mount Screw 3. Platen Open Belt (P/N 29–29284–01) 4. Motor Pulley 5. Platen Pulley 6. Set Screw Figure 5–2 . Belt, Platen Open, Removal/Installation Replacement Procedures 5–7...
  • Page 85 Cable Assembly, Hammer Bank (Figure 5–3 ) Removal NOTE: This procedure removes the left hammer bank cable assembly. The procedure for removing the right cable assembly is the same. Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page ).
  • Page 86 Printer viewed from above, PCBAs removed. Right hammer bank Left hammer bank cable assembly cable assembly Card cage floor Card Cage Paper feed Platen motor open motor Paper feed mechanisms and barrier panel Platen Shuttle Frame Assembly Base casting Hammer Bank Front 1.
  • Page 87 Cable Assembly, Intermediate (Figure 5–4 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page 5–42). Remove the common controller PCBA (page 5–46). Remove the mechanism driver PCBA (page 5–48). Remove screws (1) securing the main wire harness connector (2) to the bottom of the card cage.
  • Page 88 Printer viewed from above, PCBAs removed. Card cage floor (PCBAs removed) Card Cage Paper feed Platen motor open motor Paper feed mechanisms and barrier panel Platen Shuttle Frame Assembly Paper detector switch assembly Base casting Hammer Bank 1. Screw (2) 2.
  • Page 89 Installation Feed the intermediate cable assembly (12) through the card cage opening and install tie wraps and cable restraints. Connect connectors CO+ and CO– (10 and 11) and install the cover open switch assembly (9). Connect connector PMD (7) to paper detector switch assembly connector PMD(J) (8).
  • Page 90 Printer viewed from above, PCBAs removed. Card cage floor (PCBAs removed) Card Cage Paper feed Platen motor open motor Paper feed mechanisms and barrier panel Platen Shuttle Frame Assembly Paper detector switch assembly Base casting Hammer Bank 1. Screw (2) 2.

  • Page 91: Cable Assembly, Multi I/O

    Cable Assembly, Multi I/O (Figure 5–5 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page 5–42). Open the rear cabinet door. Remove six screws (1) and move the fan duct (2) aside. Open the ribbon cable restraints (3) on the upper rear and upper right walls of the cabinet.
  • Page 92 1. Screw (6) 2. Fan Duct 3. Ribbon Cable Restraints 4. Latch (2) 5. Ribbon Cable Connector 6. Common Controller Connector J1 7. Screw (4) 8. Mounting Plate 9. Multi I/O Cable Assembly (P/N 29–29291–01) Figure 5–5. Cable Assembly, Multi I/O, Removal/Installation Replacement Procedures 5–15...
  • Page 93 Installation Feed the multi I/O ribbon cable from the lower cabinet up into the opening at the right rear of the card cage. Route the ribbon cable outboard of the right gas spring assembly (the strut that holds the printer cover open).
  • Page 94 1. Screw (6) 2. Fan Duct 3. Ribbon Cable Restraints 4. Latch (2) 5. Ribbon Cable Connector 6. Common Controller Connector J1 7. Screw (4) 8. Mounting Plate 9. Multi I/O Cable Assembly (P/N 29–29291–01) Figure 5–5 . Cable Assembly, Multi I/O, Removal/Installation Replacement Procedures 5–17...

  • Page 95: Circuit Breaker

    Circuit Breaker (Figure 5–6 ) Removal Prepare the printer for maintenance (page 5–3). Open the rear cabinet door. Remove six screws (1) and move the fan duct (2) aside. Tag and disconnect the four circuit breaker electrical leads (3). Press in on the spring clips (4) and push the circuit breaker (5) out of the mounting plate (6).
  • Page 96 1. Screw (6) 2. Fan Duct WHITE 3. Circuit Breaker Electrical Lead (4) 4. Spring Clip (4) 5. Circuit Breaker (P/N 29–29329–01) BLACK 6. Mounting Plate BROWN BLUE Figure 5–6 . Circuit Breaker Removal/Installation Replacement Procedures 5–19...

  • Page 97: Control Panel Assembly

    Control Panel Assembly (Figure 5–7 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page 5–42). Open the connector latches and disconnect the control panel ribbon connector P1 (1) from connector J3 on the common controller PCBA (2).
  • Page 98 Install block–type ferrite core here and wind cable around round core. Refer to Appendix F. 1. Control Panel Connector P1 2. Common Controller PCBA 3. Wire Saddles 4. Screw (4) 5. Washer (4) 6. Control Panel Assembly (P/N 29–29286–01) 7. Panel Bracket Figure 5–7 .

  • Page 99: Cover Assembly, Hammer Bank

    Cover Assembly, Hammer Bank (Figure 5–8 ) Removal Prepare the printer for maintenance (page 5–3). Remove the shuttle frame assembly (page 5–66). Rotate hammer bank cover assembly (1) away from hammer bank (2). Remove hammer bank cover assembly (1) from alignment pins (3). Installation CAUTION The hammer bank contains a strong magnet.
  • Page 100 Thin plate Thick plate (Not shown) 1. Hammer Bank Cover Assembly (P/N 29–29280–01) 2. Hammer Bank 3. Alignment Pin (2) Figure 5–8 . Cover Assembly, Hammer Bank, Removal/Installation Replacement Procedures 5–23...

  • Page 101: Cover Assembly, Shuttle

    Cover Assembly, Shuttle (Figure 5–9 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Loosen the shuttle cover screws (1). Grasping the edges of the shuttle cover assembly (2), tilt up the rear edge and lift the shuttle cover assembly out of the printer. Installation Place the shuttle cover assembly (2) in the printer.
  • Page 102 1. Screw, Captive, Shuttle Cover (2) 2. Shuttle Cover Assembly (Mfg. P/N 150123–011) Figure 5–9 . Cover Assembly, Shuttle, Removal/Installation Replacement Procedures 5–25...

  • Page 103: Fan Assembly, Card Cage

    Fan Assembly, Card Cage (Figure 5–10 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page 5–42). Remove the power supply PCBA (page 5–50). Remove the nut (1) and ground wire (2). Remove four screws (3).
  • Page 104 1. Nut 2. Ground Wire 3. Screw (4) 4. Fan Cable Connector 5. Card Cage Fan Assembly (P/N 29–29294–01) 6. Fan Guard 7. Card Cage Figure 5–10 . Fan Assembly, Card Cage, Removal/Installation Replacement Procedures 5–27...

  • Page 105: Fan Assembly, Cabinet Exhaust

    Fan Assembly, Cabinet Exhaust (Figure 5–11 ) Removal Prepare the printer for maintenance (page 5–3). Open the floor cabinet rear door. Remove six screws (1) and move the fan duct (2) aside. Remove four screws (3) securing the cabinet exhaust fan assembly (4). Disconnect the fan cable connector (5).
  • Page 106 1. Screw (6) 2. Fan Duct 3. Screw (4) 4. Cabinet Exhaust Fan Assembly (P/N 29–29294–01) 5. Fan Cable Connector 6. Fan Guard Figure 5–11 . Fan Assembly, Cabinet Exhaust, Removal/Installation Replacement Procedures 5–29...

  • Page 107: Fan Assembly, Hammer Bank

    Fan Assembly, Hammer Bank (Figure 5–12 ) Removal Prepare the printer for maintenance (page 5–3). Remove the shuttle cover assembly (page 5–24). Remove three screws (1). Reach under the base casting (2) and disconnect the hammer bank fan cable connector (3). NOTE: The hammer bank fan assembly is removed by angling it up and out from beneath the shuttle motor.
  • Page 108 Attach cable connector here. NOTE: Do not install screw here. Route cable under base casting. Hammer Bank Front 1. Screw (3) 2. Base Casting 3. Fan Cable Connector 4. Hammer Bank Fan Assembly (P/N 29–29295–01) Figure 5–12 . Fan Assembly, Hammer Bank, Removal/Installation Replacement Procedures 5–31...

  • Page 109: Hammer Spring Assembly

    Hammer Spring Assembly (Figure 5–13 ) Removal Prepare the printer for maintenance (page 5–3). Remove the shuttle frame assembly (page 5–66). Remove the hammer bank cover assembly (page 5–22). Remove three 5/64 inch socket head screws from the old hammer fret. Using the pointed end of the nylon stick supplied in the hammer spring replacement kit, carefully pry the old hammer fret off its mounting pins as shown in Figure 5–13 .

  • Page 110: Hammer Bank

    Preparation – Frets 1 and 7 only NOTE: Right end If you replace fret 1 or 7, bend the end hammer down BEFORE removing it from Hammer Bank the box, as shown below. Do this ONLY for frets 1 and 7. Left end Bend this hammer if Bend this hammer if...

  • Page 111: Magnetic Pick-Up (Mpu) Assembly

    Magnetic Pick–up (MPU) Assembly (Figure 5–14 ) Removal Prepare the printer for maintenance (page 5–3). Remove the shuttle cover (page 5–24). Disconnect the magnetic pick–up (MPU) cable connector (1). Loosen the MPU clamp screw (2). Remove the MPU assembly (3) by unscrewing it from the MPU bracket (4).
  • Page 112 0.010 .001INCH Attach MPU cable here. 1. MPU Cable Connector 2. MPU Clamp Screw 3. Magnetic Pick–Up (MPU) Assembly (P/N 29–29277–001) 4. MPU Bracket 5. Flywheel Figure 5–14 . Magnetic Pick–up (MPU) Assembly Removal/Installation Replacement Procedures 5–35...

  • Page 113: Motor Assembly, Ribbon Drive

    Motor Assembly, Ribbon Drive (Figure 5–15 ) Removal NOTE: The procedure below is the same for the left and right ribbon drive motor assemblies. Prepare the printer for maintenance (page 5–3). Remove the ribbon. Remove the ribbon hub (page 5–58). Remove two screws (1) and washers (2).
  • Page 114 Install block–type ferrite core here. Refer to Appendix F. 1. Screw (2) 2. Washer (2) 3. Ribbon Drive Motor (P/N 29–29282–01) 4. Base Casting 5. Ribbon Motor Cable Connector 6. Set Screw 7. Collar 8. Shaft Extension Figure 5–15 . Motor Assembly, Ribbon Drive, Removal/Installation Replacement Procedures 5–37...

  • Page 115: Motor Assembly, Paper Feed

    Motor Assembly, Paper Feed (Figure 5–16 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the platen open belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the set screw (2) and remove the paper feed motor pulley (3), collar (4), and paper feed timing belt (5).
  • Page 116 1. Belt Cover 2. Set Screw 3. Paper Feed Motor Pulley 4. Collar 5. Paper Feed Timing Belt 6. Paper Feed Motor Connector 7. Bolt 8. Nut 9. Paper Feed Motor Assembly (P/N 29–29282–01) 10. Splined Shaft Pulley Figure 5–16 . Motor Assembly, Paper Feed, Removal/Installation Replacement Procedures 5–39...

  • Page 117: Motor Assembly, Platen Open

    Motor Assembly, Platen Open (Figure 5–17 ) Removal Prepare the printer for maintenance (page 5–3). Remove the card cage fan assembly (page 5–26). Remove the platen open belt cover (1) by squeezing the top and bottom to release the plastic tabs from the slots in the side plate. Loosen the motor mount screws (2).
  • Page 118 1. Cover, Platen Open Belt 2. Screw, Motor Mount 3. Platen Open Belt 4. Set Screw, Collar 5. Motor Pulley 6. Platen Motor Cable Connector 7. Nut Ring 8. Platen Open Motor Assembly (P/N 29–29282–01) 9. Platen Pulley 10. Set Screw, Platen Pulley Figure 5–17 .

  • Page 119: Paper Guide Assembly

    Paper Guide Assembly (Figure 5–18 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Loosen—do not remove—the hold–down screw (1). Slide the paper guide assembly (2) to the left and lift it off the card cage (3).
  • Page 120 NOTE: Loosen, do not remove, the hold–down screw. Clips on card cage top. (Not shown.) Engage clips here. 1. Hold–Down Screw 2. Paper Guide Assembly 3. Card Cage Figure 5–18 . Paper Guide Assembly Removal/Installation Replacement Procedures 5–43...

  • Page 121: Paper Ironer

    Paper Ironer (Figure 5–19 ) Removal Remove the shuttle frame assembly (page 5–66). Move the forms thickness lever (1) to the open position. WARNING Over time, the upper edge of the paper ironer can become sharp. To avoid cutting yourself, grasp the paper ironer on the sides. Push back at the ends of the paper ironer (2) to disengage the tabs, then lift it up and out.
  • Page 122 Push and Lift Push and Lift 1. Forms Thickness Lever 2. Paper Ironer (Mfg. P/N 150724–001) Figure 5–19 . Paper Ironer Removal/Installation Replacement Procedures 5–45...

  • Page 123: Pcba, Common Controller

    PCBA, Common Controller (Figure 5–20 ) CAUTION To prevent electrostatic damage to electronic components, wear a properly grounded static wrist strap when handling PCBAs. Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper guide assembly (page 5–42). Open the connector latches and disconnect the multi I/O ribbon cable (1) from connector J1 (2).
  • Page 124 1. Multi I/O Ribbon Cable 2. Connector J1 3. CCB/Mech. Driver Cable 4. Connector J2 5. Control Panel Ribbon Cable 6. Connector J3 7. Ejection Lever (2) 8. Common Controller PCBA (CCB) (P/N 29–29288–01) 9. Card Cage NOTE: Power Supply and Mechanism Driver boards shown for reference.
  • Page 125 PCBA, Mechanism Driver (Figure 5–21 ) CAUTION To prevent electrostatic damage to electronic components, wear a properly grounded static wrist strap when handling PCBAs. Do not flex the board or grasp components on the PCBA during removal/installation. Damage to components may result. Handle the board carefully by the ejections levers, sides, or the heat sink.
  • Page 126 NOTE: Power Supply and Common Controller boards shown for reference. They are not removed in this procedure. 1. CCB/Mech. Driver Ribbon Cable 2. Connector J6 3. Power Supply Cable 4. Connector J7 5. Ejection Lever (2) 6. Mechanism Driver PCBA (P/N 29–29289–01) 7.
  • Page 127 PCBA, Power Supply (Figure 5–22 ) WARNING To prevent injury from electric shock, wait at least one minute after shutting off power before removing the power supply PCBA. Do not touch components or flex the board during removal/installation. Handle the board by the ejections levers and the sides. Wear a properly grounded static wrist strap when handling the power supply PCBA.
  • Page 128 NOTE: Mechanism Driver and Common Controller boards shown for reference. They are not removed in this procedure. 1. Mechanism Driver Power Supply Cable 2. Connector J102 3. Ejection Lever (2) 4. Power Supply PCBA (P/N 29–29290–01) 5. Circuit Breaker Cable 6.
  • Page 129 PROMs, Chips, and ICs on the CCB (Figure 5–23 ) Removal Prepare the printer for maintenance (page 5–3). Remove the common controller PCBA (page 5–46). CAUTION To prevent electrostatic damage to electronic components, wear a properly grounded static wrist strap when handling PCBAs and components.
  • Page 130 LEGEND PROM Kit: P/N 29–29287–01, Rev B01 DPMC = Dot Plucker Memory Controller DPU = Data Processing Unit FTIC = Fire Timer IC LED = Light–Emitting Diode MPU = Magnetic Pick–up NOVRAM = Nonvolatile Random Access Memory PAL = Programmable Array Logic PFC = Paper Feed Controller RTPU 68010...
  • Page 131 PROMs, Chips, and ICs on the Mechanism Driver (Figure 5–24 ) Removal Prepare the printer for maintenance (page 5–3). Remove the mechanism driver PCBA (page 5–48). CAUTION To prevent electrostatic damage to electronic components, wear a properly grounded static wrist strap when handling PCBAs and components.
  • Page 132 LEGEND RSP = Ribbon/Shuttle Processor ASIC = Application–Specific Integrated Circuit Hammer Driver ASIC RSP PROM 150846 8032 Mech. Driver ASIC Microcontroller Figure 5–24 . PROM, DIP, and IC Locations on the Mechanism Driver Replacement Procedures 5–55...
  • Page 133 Resistors, Terminating (Figure 5–25 ) For parallel interface configurations, the LG06 printer is equipped with 1K ohm pullup terminating resistors, located at coordinates 12C on the Common Controller PCBA. The 1K ohm terminating resistors are suitable for most applications. If the standard terminating resistor pack is not compatible with the particular interface driver requirements of the host computer, other values of pullup/pulldown resistors may be required.
  • Page 134 1K ohm DIP 330 ohm DIP Pull up (Location 12C) 220 ohm DIP Pull down (Location 12D) Figure 5–25 . Resistors, Terminating, Removal/Installation Replacement Procedures 5–57...
  • Page 135 Ribbon Hub (Figure 5–26 ) Removal Prepare the printer for maintenance (page 5–3). Remove the printer ribbon. Loosen the screw (1) in the ribbon spool hub (2). Remove the hub (2) from the shaft adapter on the ribbon drive motor (3).
  • Page 136 1. Hub Screw 2. Ribbon Spool Hub (Kit, P/N 29–29296–01) 3. Ribbon Drive Motor 4. Collar Screw 5. Shaft Extension 6. Collar Figure 5–26 . Ribbon Hub Removal/Installation Replacement Procedures 5–59...
  • Page 137 Ribbon Guide Assembly (L/R) (Figure 5–27 ) Removal NOTE: Although the right ribbon guide is shown in Figure 5–27 , the removal procedure is the same for the left ribbon guide. Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the printer ribbon.
  • Page 138 1. Spot Tie 2. Ribbon Guide Connector 3. Screw (2) 4. Washer (2) 5. Ribbon Guide Assembly, Right (P/N 29–29299–01) Ribbon Guide Assembly, Left (P/N 29–29278–01) 6. Side Plate Figure 5–27 . Ribbon Guide Assembly (L/R), Removal/Installation Replacement Procedures 5–61...
  • Page 139 Shaft, Splined (Figure 5–28 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the paper feed timing belt (page 5–4). With grip ring pliers, remove the grip ring (1) from the splined shaft (2). Pull the bearing (3) and spring link (4) with the spring (5) off the splined shaft (2).
  • Page 140 1. Grip Ring (Mfg. P/N 101551–002) 2. Splined Shaft Assembly (Mfg. P/N 150169–001) 3. Bearing (Mfg. P/N 101308–001) 4. Spring Link (Mfg. P/N 110280–001 or 150664–001) 5. Spring 6. Tractor, Left (Set, L/R, P/N 29–29285–01) 7. Tractor, Right 8. Screw 9.
  • Page 141 Shaft, Support (Figure 5–29 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Unlock the tractors (1) and slide them to the far left. Remove the E ring (2). Slide the support shaft assembly — consisting of the support shaft (3), two spring washers (4), bushing (5), horizontal adjustment knob (6), washer (7) and screw (8) —...
  • Page 142 1. Tractor (2) (Set, L/R, P/N 29–29285–01) 2. E Ring (Mfg. P/N 105678–003) 3. Support Shaft (Mfg. P/N 111685–001) 4. Spring Washer (2) 5. Bushing 6. Horizontal Adjustment Knob 7. Washer 8. Screw 9. Left Side Plate 10. Right Side Plate Figure 5–29 .
  • Page 143 Shuttle Frame Assembly (Figure 5–30 ) Removal Prepare the printer for maintenance (page 5–3). Remove the shuttle cover assembly (page 5–24). Disconnect the MPU cable connector (1). Disconnect the shuttle motor cable connector (2). Disconnect the shuttle cable assembly connector (3). CAUTION The hammer bank flex circuit ribbon cables can tear if handled roughly.
  • Page 144 2 Places NOTE: Center captive screw NOTE: exploded for clarity. Clamp hardware Do not remove it. exploded for clarity. Do not remove. 1. MPU Cable Connector 2. Shuttle Motor Cable Connector 3. Shuttle Cable Assembly Connector 4. Left Flex Circuit Ribbon Connector 5.
  • Page 145 Installation Install the hammer bank cover (page 5–22). Holding the shuttle frame assembly (10) by the outer beam standoffs (12), set it into the base casting (11). Use both hands: the shuttle frame assembly is heavy. Align the center 5/32 inch socket head screw (9) in the base casting (11) and hand turn the screw until only two or three threads have started.
  • Page 146 2 Places NOTE: Center captive screw NOTE: exploded for clarity. Clamp hardware Do not remove it. exploded for clarity. Do not remove. 1. MPU Cable Connector 2. Shuttle Motor Cable Connector 3. Shuttle Cable Assembly Connector 4. Left Flex Circuit Ribbon Connector 5.
  • Page 147 Spring Assembly, Gas (Figure 5–31 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover (1). Open the floor cabinet rear door. Remove two nuts (2) and washers (3). Remove the gas spring assembly (4). Installation Position the gas spring assembly (4) on the upper and lower brackets (5 and 6).
  • Page 148 1. Printer Cover 2. Nut 3. Washer 4. Gas Spring Assembly (P/N 29–29508–01) 5. Upper Bracket 6. Lower Bracket Figure 5–31 . Spring Assembly, Gas, Removal/Installation Replacement Procedures 5–71...
  • Page 149 Spring, Extension (Figure 5–32 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the shuttle cover assembly (page 5–24). Unhook the extension spring (1) from the spring lugs (2) on the hammer bank (3) and shuttle frame (4). Installation Apply a dab of M–3 lubricant to both spring lugs (2).
  • Page 150 1. Extension Spring (P/N 29–29279–01) 2. Spring Lug (2) 3. Hammer Bank 4. Shuttle Frame Figure 5–32 . Spring, Extension, Removal/Installation Replacement Procedures 5–73...
  • Page 151 Switch Assembly, Cover Open (Figure 5–33 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Remove the shuttle cover assembly (page 5–24). Remove two screws (1) and lift the cover open switch assembly (2) out of the base casting. Disconnect the switch connectors from intermediate cable assembly connector CO+ (3) and CO–...
  • Page 152 Printer viewed from above. Card Cage Card cage Paper feed Platen motor open motor Paper feed mechanisms and barrier panel Platen Shuttle Frame Assembly Base casting This section of cable runs beneath the base casting. Front 1. Screw (2) 2. Cover Open Switch Assembly (P/N 29–29274–01) 3.
  • Page 153 Switch Assembly, Paper Detector (Figure 5–34 ) Removal Prepare the printer for maintenance (page 5–3). Remove the paper guide assembly (page 5–42). Remove four screws (1) and the barrier shield (2). Remove the shuttle frame assembly (page 5–66). Remove the paper ironer (page 5–44). Loosen the screws (3) securing the paper detector switch assembly (4).
  • Page 154 1. Screw (4) 2. Barrier Shield 3. Screw 4. Paper Detector Switch Assembly (P/N 29–292976–01) 5. Paper Detector Switch Cable Connector Figure 5–34 . Switch Assembly, Paper Detector, Removal/Installation Replacement Procedures 5–77...
  • Page 155 Switch Assembly, Platen Interlock (Figure 5–35 ) Removal Prepare the printer for maintenance (page 5–3). Open the printer cover. Disconnect the platen interlock switch connector (1) from connector P1(P) (2). Fully close the forms thickness lever (3). Remove two screws (4). Remove the platen interlock switch assembly (5) from the forms thickness indicator plate (6).
  • Page 156 1. Platen Interlock Switch Connector 2. Connector P1(P) 3. Forms Thickness Lever 4. Screw 5. Platen Interlock Switch Assembly (P/N 29–29275–01) 6. Forms Thickness Indicator Plate Figure 5–35 . Switch Assembly, Platen Interlock, Removal/Installation Replacement Procedures 5–79...
  • Page 157 Tractor (L/R) Removal Prepare the printer for maintenance (page 5–3). Remove the splined shaft (page 5–62). Remove the support shaft (page 5–64). Remove the tractors from the support shaft. Installation Using the replacement tractors, install the support shaft (page 5–64). Install the splined shaft (page 5–62).
  • Page 158 Printer Configuration Contents Printer Configuration ..........A–2 Configuration Printout .

  • Page 159: Printer Configuration

    Printer Configuration IMPORTANT Configuration directly affects printer operation. Do not change printer configuration until you are thoroughly familiar with the procedures in this appendix. Configuration refers to the operating properties that define how the printer responds to signals and commands received from the host computer. These properties, called configuration parameters, are set to match the operating characteristics of the host computer system.

  • Page 160: Configuration Procedure

    Configuration Procedure Use the following procedure to configure the printer from the control panel: Obtain a configuration printout (page A–2). Determine the parameter values that must be changed to meet your requirements. Take the printer off–line by pressing the ON LINE switch. Open the printer cover.

  • Page 161: Saving Configuration Values

    Saving Configuration Values When you save a set of configuration values they become active every time the printer is turned on. To save a set of configuration values: Press the ON LINE switch to take the printer off–line. “Off–Line/Emulation” appears on the message display. Open the printer cover.

  • Page 162: Loading Configuration Values

    Loading Configuration Values Configuration values saved using the “Save Config” menu (page A–4) become the power–up default configuration. The set of factory values remains permanently stored in printer memory, however. The “Load Config” menu gives you the choice of loading either the saved or the factory configuration values.

  • Page 163: Changing Printer Emulations

    Changing Printer Emulations Emulation refers to the ability of the LG06 to execute the commands of DEC LG02/LG31/LN01 printers, an IBM Proprinter, or an Epson FX printer. (On the LG06 printer, the self–test and hex printout modes are also considered emulations.)

  • Page 164: Configuration Diagram

    Configuration Diagram The Configuration Diagram is a series of block diagrams showing the configuration menu structure and the parameter options available in each menu. The Configuration Diagram begins on page A–8. How to Read the Configuration Diagram Boxes on the diagram represent the message display. Messages that appear on the display are printed inside the boxes.
  • Page 165 Idioma en Pant Español Done Done User defined Emulation Emulation Emulation Emulation Emulation (1) Returns after 1 second LG06 Proprinter XL Epson FX–1050 Hex Dump Self test PAGE 4–10 PAGE A–11 PAGE A–14 PAGE A–19 PAGE A–20 A–8 Printer Configuration...
  • Page 166 Emulation FROM PAGE A–8 LG06 Continued on next page LG06 Font Font Font Style Character Set Style Character Set DEC Multinat’l DP 10 6* DP 10 8 DP 12 6 DP 12 8 DP = Data Processing DP 15 6...
  • Page 167 Continued from previous page LG06 LG06 LG06 LG06 LG06 LG06 Vert. Forms Horiz. Forms Autowrap Unsol. Reports? Horiz Forms Unsol. Reports? Autowrap Vert Forms Left Mrg n = CR = CR + LF Bot. Frm n N or P N or P...
  • Page 168 FROM PAGE A–8 Continued on next page Emulation Proprinter XL Proprinter XL Proprinter XL Proprinter XL Font Character Set Compatibility Compatibility Compatibility Character Set Character Set Compress 12 CPI Slashed Zero Font US 437 Mult 850 Draft at 10 CPI Compress 12 CPI Slashed Zero Font...
  • Page 169 Continued from previous page Continued on next page Proprinter XL Paper Format Paper Format Paper Format Paper Format Paper Format Forms Length Set Line Spacing Define LF Code Define CR Code Line Spacing Define LF Code Define CR Code Set at 6 LPI LF = LF CR = CR In Inches...
  • Page 170 FROM PAGE A–8 Off–Line Statistics Continued from previous page Statistics On: 0 Hrs Statistics Printed: 0 Hrs Paper Format Paper Format Form Feed at TOF Print Width Statistics Print Strokes: 0 Form Feed at TOF Print Width Statistics Enable 13.6 Inches Print Lines: 0 N or P N or P...
  • Page 171 FROM PAGE A–8 Continued on next page Emulation Epson FX–1050 Epson FX–1050 Epson FX–1050 Epson FX–1050 Epson FX–1050 Epson FX–1050 Font Condensed Draft Speed Character Set International Set International Set Font Condensed Draft Speed Character Set HS Draft 10 High Epson France Font...
  • Page 172 Continued from previous page Epson FX–1050 Epson FX–1050 Epson FX–1050 Epson FX–1050 Epson FX–1050 Slashed Zero CR = Page Length Skip Over Perf Page Width Page Width Slashed Zero CR = Page Length Skip Over Perf 11 ” 13.2 ” N or P N or P N or P...
  • Page 173 FROM PAGE A–8 Offline Interface DATAPRODUCTS PAGE A–19 Interface Serial EIA–232 CENTRONICS PAGE A–18 Continued on next page Serial EIA–232 Serial EIA–232 Serial EIA–232 Serial EIA–232 Serial EIA–232 Word Length 8 Parity Data Term Ready Data Rate Stop Bits 1 Data Rate Serial EIA–232 Parity...
  • Page 174 Continued from previous page Serial EIA–232 Serial EIA–232 Request to Send Reverse Channel Request to Send Reverse Channel On–Line and BNF On–Line and BNF Request to Send Reverse Channel Off–Line or BF Off–Line or BF Request to Send Reverse Channel False False Request to Send...
  • Page 175 FROM PAGE A–16 Interface Centronics Centronics Centronics Centronics Centronics Centronics Centronics Centronics Busy on Strobe Latch Data On Prime Signal TOF Action Data Bit 8 Data Polarity Response Pol. Latch Data On Prime Signal TOF Action Busy on Strobe Data Bit 8 Data Polarity Response Pol.
  • Page 176 FROM PAGE A–8 FROM PAGE A–16 Emulation Interface Hex Dump Dataproducts Emulation Hex Dump On–Line Hex Dump Dataproducts Dataproducts Dataproducts Dataproducts Dataproducts Data Bit 8 Data Polarity Data Request Pol. Strobe Polarity PI Ignored Off–Line Emulation Data Bit 8 Data Polarity Data Request Pol.
  • Page 177 FROM PAGE A–8 Emulation Self Test Emulation Self Test Self Test Self Test Self Test Self Test Self Test ASCII Swirl All E’s E’s + TOF All H’s All Underlines Running Running Running Running Running All E’s ASCII Swirl E’s + TOF All H’s All Underlines Self Test...

  • Page 178: Printer Specifications

    Printer Specifications Contents Cleaning Interval ..........B–2 Ribbon Specifications .

  • Page 179: Cleaning Interval

    Cleaning Interval Clean the LG06 every 6 months or 1000 hours of operation, whichever occurs first. (See page 2–4.) Ribbon Specifications NOTE: Use of ribbons that do meet digital specifications may void warranty. Part Number: 36–36692–01 Type: OCR Application, carton of 1 ribbon Dimensions: Length: 60 yards (54.84 m)

  • Page 180: Labels

    Labels On Backing: One–part continuous perforated fanfold back form. Labels must be placed at least 0.42 cm (1/6 in) from the fanfold perforation. Backing adhesive must not be squeezed out during printing. Sheet Size: 7.62 to 40.64 cm (3– to 16–in) wide, including the two standard perforated tractor feed strips.

  • Page 181: Environmental Characteristics

    Environmental Characteristics Temperature ° ° ° ° Operating 10 to 40 C (50 to 104 ° ° ° ° Storage – 40 to 70 C (–40 to 158 Relative Humidity Operating 10% to 90% (noncondensing) Storage 5% to 95% (noncondensing) Acoustic Noise Level 52 dBA (tested per ISO 7779) Electrical Characteristics...

  • Page 182: Data Input Rate

    Data Input Rate (maximum) Dataproducts Up to 30 000 characters per second Centronics Up to 30 000 characters per second RS–232 Up to 19 200 baud Radio Frequency Interference (RFI) Radio Frequency Interference tested/certified to RFI standards FCC 15.J Class A; VDE 0871 Class A; CISPR–22. Printer Specifications B–5...

  • Page 183: Printing Rates

    Printing Rates Printing speed of text is measured in lines/minute, and is a function of the selected font and dot density. Printing speed is independent of the number of characters configured in the character set repertoire. Print rates for lines containing attributes such as bold or emphasized printing, superscripts, subscripts, or elongated attributes will decrease to not less than half the rates of the font without such attributes.
  • Page 184 & Underline and Characters Dot Density Dot Matrix (lines/minute) (lines/minute) /inch LG06 DP 5 60 (120) x 66.6 10 (18) x 7 + 2 LG06 DP 6 60 (120) x 66.6 8 (14) x 7 + 2 LG06 DP 10 60 (120) x 66.6...

  • Page 185: Duty Cycle

    Duty Cycle The LG06 text and graphics printer is capable of printing 75 000 pages per month under the following conditions: Uppercase only 6 lines/inch 10 characters/inch 63% character density or 83 characters/line 63% line density or 42 lines/11–inch page...
  • Page 186 Torque Table IMPORTANT Torque values specified in replacement procedures (Chapter 5) take precedence over Table C–1. Table C–1 establishes the torque requirements for routine installation of threaded fasteners. The torque requirements in Table C–2 apply to fasteners made of steel, at a minimum engagement of 3.5 threads, including chamfer and countersink.
  • Page 187 Torque Table C–2...
  • Page 188 Cable Interconnections and Hammer Bank Wiring Table D–1 lists the LG06 cable assemblies and their part numbers. The LG06 Interconnection Diagram on page D–2 shows the electrical interconnections in block diagram form. Use this diagram as a troubleshooting aid. The Hammer Bank Wiring Diagram on page D–3 is useful for tracing opens or shorts.
  • Page 189 D–2...
  • Page 190 Key: Unused hammer. Hammer Coil. Hammer Spring. Ribbon Cable. NOTES: 1. Coil 48 is wired, but not used. 2. Hammer springs 1 and 49 are not used. 3. Hammer coil resistance = 4.7 Ohms. Hammer Bank Wiring Diagram Cable Interconnections and Hammer Bank Wiring D–3...
  • Page 191 Cable Interconnections and Hammer Bank Wiring D–4...
  • Page 192 Principles of Operation Contents Functional Elements of the Printer ........E–2 Common Controller PCBA .

  • Page 193: Functional Elements Of The Printer

    Functional Elements of the Printer The principal functional elements of the LG06 printer are the common controller board (CCB), the mechanism driver board, the power supply board, the operator control panel, and the components of the electromechanical print mechanism. These elements are depicted at their most basic level in Figure E–1. The following sections of this appendix discuss these elements in more detail.

  • Page 194: Common Controller Pcba

    Common Controller PCBA The heart of the LG06 Text and Graphics printer is the common controller printed circuit board assembly (PCBA), also called the common controller board (CCB). The CCB oversees and coordinates all printer functions. The CCB is functionally two units, the data processing unit (DPU) and the real–time processing unit (RTPU).
  • Page 195 Communicating with the Host Computer The CCB processes three kinds of computer input: Centronics parallel, DataProducts parallel, and RS–232 serial data. The RTPU operates all three interfaces. The parallel interfaces are similar, and the RTPU contains direct–memory–access (DMA) hardware which loads parallel data directly into shared memory.
  • Page 196 DATA PROCESSING UNIT Hammer SHARED MEMORY DOT PLUCKER Driver ASIC Data RTPU 64180 DMA CONTROLLER PROCESSOR Hammer FIRE TIMER Timing EPROM ASIC Data REAL–TIME PROCESSING UNIT Figure E–3. Hammer Driver Interface Functions of the RTPU Getting Dots to the Hammers Getting dots to the hammers consists of going into the shared memory and pulling bits out in a given order and shifting them to the hammer driver at the correct time.

  • Page 197: Mechanical Interface

    Mechanical Interface Three mechanical operations are coordinated in printing: paper motion, ribbon motion, and shuttle motion. Virtually all digital handling of paper motion is contained in the RTPU. The ribbon and shuttle are controlled by logic on the mechanism driver board, under the direction of the RTPU. Figure E–4 shows the mechanical interface section of the RTPU.
  • Page 198 the ribbon/shuttle processor (RSP) is a 2400 baud asynchronous serial line. A message protocol is used to communicate ribbon and shuttle information. Fault Monitoring The RTPU also monitors the hammer driver, mechanism driver, and the electro–mechanical sensors for fault conditions. Fault conditions are reported to the DPU.
  • Page 199 RTPU; it is sixteen bits wide and is arbitrated on a cycle–by–cycle basis. The 8032 chip has its own eight bit local bus. The manner in which the CCB implements this hardware is depicted in Figure E–5. The 64180 IC that oversees the RTPU processor contains a Z80 microprocessor with extended memory management, two DMA controllers, two asynchronous and one synchronous serial port, two counter timers, and an interrupt controller.

  • Page 200: Fault Monitoring

    from the FTIC, which synchronizes paper motion with shuttle motion. The 64180 programs the PFC 8032 at the beginning of each dot row, telling the PFC how far to move when the trigger is received. The PFC sets up for the move, waits, then moves when the trigger occurs.
  • Page 201 SHARED 68010 NVRAM MICROPROCESSOR 2 KB INTERFACE EPROM CONTROL 512 KB REGISTER DATA PROCESSING UNIT (DPU) REAL–TIME PROCESSING UNIT (RTPU) From PARALLEL Host PORT Computer PLUCKER ASIC Serial from Host Computer SHARED 64180 PROCESSOR DRAM INTERFACE 1 MB Serial to Host, Hammer Mech.

  • Page 202: Mechanism Driver Pcba

    Mechanism Driver PCBA The mechanism driver board, acting on commands from the CCB, controls real–time operation of the electromechanical printer systems. Functionally, the board consists of nine subsystems: • An 8032 micro–controller that controls ribbon drive and communication with the CCB. •...
  • Page 203 provide direct digital PWM drive signals for the ribbon motor PWM amplifier. The 8032 drives the ribbon motors through PWM generators in the mechanism driver integrated circuit (MDIC). Nearly all mechanical control functions are carried out through the MDIC ASIC. Digital I/O is done through latches connected to the 8032 I/O ports and MDIC.
  • Page 204 A CCB paper feed command is a digital word containing a value proportional to the desired current level in the paper feed motor, enabling the motor to be quarter stepped in LG06 mode. Two PWM current mode amplifiers, protected against overloads and short circuits, drive the paper feed motor.

  • Page 205: Power Supply Pcba

    The Magnetic Pick–up Unit (MPU) The magnetic pick–up unit (MPU) is mounted next to the shuttle motor flywheel. It provides timing information to the hammer fire controller by way of the CCB. The rotation of the flywheel generates a pulse signal in the MPU.

  • Page 206: Printing Mechanism

    than 15 V in less than 200 milliseconds and requires recycling of the circuit breaker (ac input) to reset the latch. The + 5 V power supply has its own inverter, separate from the + 48 V and + 9.5 V outputs. Printing Mechanism The printing mechanism consists of the shuttle frame assembly, which carries the hammer bank assembly, the ribbon transport system, and the paper...
  • Page 207 Shuttle Frame and Hammer Bank Assemblies Dots are printed by 47 hammer springs mounted on the hammer bank. The hammers are arrayed in seven comb–like hammer spring assemblies, or frets. Each fret contains 7 hammers. Using 49 hammers balances the magnetic field characteristics of the hammer bank, while design parameters determine the use of 47 hammers for printing.
  • Page 208 The hammer springs forward, strikes the ribbon and paper, and leaves a dot impression of the hammer tip on the paper. The coil is de–energized and its field collapses while the hammer is in flight. After striking the ribbon and paper, the hammer rebounds and the permanent magnet recaptures it.
  • Page 209 Succesive Hammer Strokes Per Scan Shuttle 1 3 5 1 3 5 7 1 3 5 7 9 Scan Even column dot centers within the printed character area and character space hammer positions are not illustrated in this diagram. NOTE: = Hammer Released and Dot Printed = Hammer Not Released;...

  • Page 210: Paper Transport System

    Paper Transport System The paper transport system accepts continuous, fan–folded, edge–perforated paper from three to 16 inches wide and from one to six sheets thick. Horizontal positioning is provided by the horizontal adjustment knob and two tractors. The tractors are laterally adjustable along the splined and support shafts.

  • Page 211: Ribbon Transport System

    Ribbon Transport System The printer ribbon winds and unwinds continuously on a pair of spools latched to hubs which are driven by the ribbon motors. The ribbon motors operate only while the hammer bank assembly is running. Ribbon motion reverses when the metal strip at either end of the ribbon crosses the left or right ribbon guide, completing a circuit that causes both motors to reverse direction.
  • Page 212 Figure F–1 shows the location of the ferrite cores in the LG06 printer. IMPORTANT When removing cables that pass through or around ferrite cores, note the number of times the cable is wound around the core.
  • Page 213 Control Panel cable wraps Ribbon Motor 4 times around Paper Feed Round ferrite cores are tie– cable wraps once core before Motor cable wrapped to the side of the around core before it enters the passes through card cage. (See the it enters the card card cage.
  • Page 214 Index Numbers I/O, replacement, 5–14 interconnection diagram, D–1 48 Volt Failed, 3–2 intermediate, replacement, 5–10 part numbers, D–1 Card cage, fan assembly, replacement, 5–26 Adjustments, 4–1 Cautions, 1–2 hammer phasing, 4–4 Checks. See Preventive Maintenance Checks paper drive motor pulley alignment, 4–10 and Services paper feed timing belt tension, 4–6 Checks and Service, 2–2...
  • Page 215 printing conventions, 1–3 48 Volt Failed, 3–2 Dynamic RAM Fault, 3–4 Cores, noise suppression, F–1 Ham. Bank Hot, 3–5 Cover assembly Ham. Coil Open, 3–6 hammer bank, replacement, 5–22 Ham. Coil Short, 3–7 shuttle, replacement, 5–24 Ham. Drv. Short, 3–8 Covers and doors, locations and operation, Mech Driver Hot, 3–9 1–4...
  • Page 216 Hex code printout, 3–29 Mech Driver Link, 3–10 Hub, ribbon, replacement, 5–58 Mechanism driver PCBA, replacement, 5–48 Messages, fault, 3–2 Motor paper feed drive, replacement, 5–38 ICs, location and replacement platen open, replacement, 5–40 CCB, 5–52 ribbon drive, replacement, 5–36 Mech.
  • Page 217 Part Numbers, 5–3 maintenance overview, 1–1 preparing the printer for maintenance, 5–3 PCBA, replacement preventive maintenance checks and ser- controller, 5–46 vices, 2–2 mechanism driver, 5–48 principles of operation, E–1 power supply, 5–50 self–tests, 3–26 Phasing adjustment, 4–4 specifications, B–1 Physical Inspection, 2–3 troubleshooting, 3–1 Platen...
  • Page 218 mechanism driver PCBA, 5–48 Services. See Preventive Maintenance Checks and Services multi I/O cable assembly, 5–14 paper detector switch assembly, 5–76 Shaft paper feed drive motor, 5–38 splined, replacement, 5–62 paper feed timing belt, 5–4 splined, skew adjustment, 4–14 paper guide assembly, 5–42 support, replacement, 5–64 paper ironer, 5–44 Shttl Cover Open, 3–15...
  • Page 219 platen interlock switch assembly, replace- ment, 5–78 Switch, power, replacement, 5–18 Switches, locations and operation, 1–6 Tension adjustment paper feed timing belt, 4–6 platen open belt, 4–8 Terminating resistors location of, 5–57 replacement, 5–56 Test equipment, tools, and supplies, 1–10 printer performance, 3–26 Tools, test equipment, and supplies, 1–10 Torque table, C–1...

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