Digital Equipment Corporation LG06 Specifications

LG06Text and Graphics PrinterMaintenance ManualOrder Number: EK–ELG06–MGlatigid

1–3Maintenance OverviewPrinting Conventions in This Manual Switches and indicators labeled on the printer are printed uppercase in thismanual. Exampl

5–23Replacement Procedures1. Hammer Bank Cover Assembly (P/N 29–29280–01)2. Hammer Bank3. Alignment Pin (2)123(Not shown)Thin plateThick plateFigure 5

5–24 Replacement ProceduresCover Assembly, Shuttle (Figure 5–9 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3.

5–25Replacement Procedures1. Screw, Captive, Shuttle Cover (2)2. Shuttle Cover Assembly (Mfg. P/N 150123–011)12Figure 5–9 . Cover Assembly, Shuttle, R

5–26 Replacement ProceduresFan Assembly, Card Cage (Figure 5–10 )Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3.

5–27Replacement Procedures1. Nut2. Ground Wire3. Screw (4)4. Fan Cable Connector5. Card Cage Fan Assembly (P/N 29–29294–01)6. Fan Guard7. Card Cage345

5–28 Replacement ProceduresFan Assembly, Cabinet Exhaust (Figure 5–11 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the floor cab

5–29Replacement Procedures1. Screw (6)2. Fan Duct3. Screw (4)4. Cabinet Exhaust Fan Assembly (P/N 29–29294–01)5. Fan Cable Connector6. Fan Guard312654

5–30 Replacement ProceduresFan Assembly, Hammer Bank (Figure 5–12 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the shuttle cov

5–31Replacement Procedures1. Screw (3)2. Base Casting3. Fan Cable Connector4. Hammer Bank Fan Assembly (P/N 29–29295–01)FrontHammer BankFan3Route cabl

5–32 Replacement ProceduresHammer Spring Assembly (Figure 5–13 )Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the shuttle frame a

1–4 Maintenance OverviewControls and Indicators The locations of the printer cover, cabinet doors, and operator control panelare shown in Figure 1–1.E

5–33Replacement ProceduresHammer Spring Replacement Kit: P/N 29–29281–01HammerFret 1HammerFret 7Hammer BankSeeSee NOTE.Preparation – Frets 1 and 7 onl

5–34 Replacement ProceduresMagnetic Pick–up (MPU) Assembly (Figure 5–14 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the shutt

5–35Replacement Procedures1. MPU Cable Connector2. MPU Clamp Screw3. Magnetic Pick–Up (MPU) Assembly (P/N 29–29277–001)4. MPU Bracket5. Flywheel0.010

5–36 Replacement ProceduresMotor Assembly, Ribbon Drive (Figure 5–15 ) RemovalNOTE: The procedure below is the same for the left and right ribbon driv

5–37Replacement Procedures1. Screw (2)2. Washer (2)3. Ribbon Drive Motor (P/N 29–29282–01)4. Base Casting5. Ribbon Motor Cable Connector6. Set Screw7.

5–38 Replacement ProceduresMotor Assembly, Paper Feed (Figure 5–16 )Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover

5–39Replacement Procedures1. Belt Cover2. Set Screw3. Paper Feed Motor Pulley4. Collar5. Paper Feed Timing Belt6. Paper Feed Motor Connector7. Bolt8.

5–40 Replacement ProceduresMotor Assembly, Platen Open (Figure 5–17 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the card cage

5–41Replacement Procedures1. Cover, Platen Open Belt2. Screw, Motor Mount3. Platen Open Belt4. Set Screw, Collar5. Motor Pulley6. Platen Motor Cable C

5–42 Replacement ProceduresPaper Guide Assembly (Figure 5–18 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3. L

1–5Maintenance OverviewHinged on left.Magnetic latch.Open by pullingright edge.Lift to open(Not shown)Hinged on left.Magnetic latch.Open by pullingrig

5–43Replacement Procedures1. Hold–Down Screw2. Paper Guide Assembly3. Card Cage12NOTE: Loosen, donot remove,the hold–downscrew.3Clips on cardcage top.

5–44 Replacement ProceduresPaper Ironer (Figure 5–19 )Removal1. Remove the shuttle frame assembly (page 5–66).2. Move the forms thickness lever (1) to

5–45Replacement Procedures1. Forms Thickness Lever2. Paper Ironer (Mfg. P/N 150724–001)2Push and LiftPush and Lift1Figure 5–19 . Paper Ironer Removal/

5–46 Replacement ProceduresPCBA, Common Controller (Figure 5–20 )CAUTIONTo prevent electrostatic damage to electronic components, wear aproperly groun

5–47Replacement Procedures1. Multi I/O Ribbon Cable2. Connector J13. CCB/Mech. Driver Cable4. Connector J25. Control Panel Ribbon Cable6. Connector J3

5–48 Replacement ProceduresPCBA, Mechanism Driver (Figure 5–21 )CAUTIONTo prevent electrostatic damage to electronic components, wear aproperly ground

5–49Replacement Procedures 1. CCB/Mech. Driver Ribbon Cable2. Connector J63. Power Supply Cable4. Connector J75. Ejection Lever (2)6. Mechanism Driver

5–50 Replacement ProceduresPCBA, Power Supply (Figure 5–22 )WARNINGTo prevent injury from electric shock, wait at least one minute aftershutting off p

5–51Replacement Procedures1. Mechanism Driver Power Supply Cable2. Connector J1023. Ejection Lever (2)4. Power Supply PCBA (P/N 29–29290–01)5. Circuit

5–52 Replacement ProceduresPROMs, Chips, and ICs on the CCB (Figure 5–23 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Remove the com

1–6 Maintenance OverviewTable 1–1. Electrical Controls and Indicators Switch or/OON LINEMessage displayLFFunction= On O = Off Turns printer on and of

5–53Replacement Procedures68010MicroprocessorDPU –001 DPU –002DPU –003 DPU –004Font –001Font –003Font –002Font –00468010ControllerPAL68010DecodePALSha

5–54 Replacement ProceduresPROMs, Chips, and ICs on the Mechanism Driver (Figure 5–24 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. R

5–55Replacement Procedures8032MicrocontrollerRSP = Ribbon/Shuttle ProcessorLEGENDASIC = Application–Specific Integrated CircuitRSP PROM150846Hammer Dr

5–56 Replacement ProceduresResistors, Terminating (Figure 5–25 ) For parallel interface configurations, the LG06 printer is equipped with 1Kohm pullup

5–57Replacement Procedures330 ohm DIPCDEF12 1311220 ohm DIP1K ohm DIPor(Location 12D)(Location 12C)Pull downPull upFigure 5–25 . Resistors, Terminatin

5–58 Replacement ProceduresRibbon Hub (Figure 5–26 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Remove the printer ribbon.3. Loosen

5–59Replacement Procedures1. Hub Screw 2. Ribbon Spool Hub (Kit, P/N 29–29296–01)3. Ribbon Drive Motor4. Collar Screw5. Shaft Extension6. Collar564213

5–60 Replacement ProceduresRibbon Guide Assembly (L/R) (Figure 5–27 )RemovalNOTE: Although the right ribbon guide is shown in Figure 5–27 , theremoval

5–61Replacement Procedures1. Spot Tie2. Ribbon Guide Connector3. Screw (2)4. Washer (2)5. Ribbon Guide Assembly, Right (P/N 29–29299–01)Ribbon Guide A

5–62 Replacement ProceduresShaft, Splined (Figure 5–28 )Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover. 3. Remove

1–7Maintenance OverviewRaise Printer Cover to Access These SwitchesON LINE FF VIEWENTERCLEARR/SSET TOFLFNEXTPREVDOWNUPENTERCLEARR/SSET TOFNEXTPREVDOWN

5–63Replacement Procedures1. 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 L

5–64 Replacement ProceduresShaft, Support (Figure 5–29 )Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3. Unlock t

5–65Replacement Procedures1. 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 Was

5–66 Replacement ProceduresShuttle Frame Assembly (Figure 5–30 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Remove the shuttle cover

5–67Replacement Procedures45610132 Places79NOTE:Clamp hardwareexploded forclarity. Do notremove.NOTE:Center captive screwexploded for clarity.Do not r

5–68 Replacement ProceduresInstallation1. Install the hammer bank cover (page 5–22).2. Holding the shuttle frame assembly (10) by the outer beam stan

5–69Replacement Procedures45610132 Places79NOTE:Clamp hardwareexploded forclarity. Do notremove.NOTE:Center captive screwexploded for clarity.Do not r

5–70 Replacement ProceduresSpring Assembly, Gas (Figure 5–31 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover (1)

5–71Replacement Procedures1. Printer Cover2. Nut3. Washer4. Gas Spring Assembly (P/N 29–29508–01)5. Upper Bracket6. Lower Bracket21432356Figure 5–31 .

5–72 Replacement ProceduresSpring, Extension (Figure 5–32 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3. Rem

1–8 Maintenance OverviewTable 1–2. Mechanical Controls and IndicatorsControl orFunctionIndicatorForms thicknessleverForms thicknesspointer and scaleTr

5–73Replacement Procedures1. Extension Spring (P/N 29–29279–01)2. Spring Lug (2)3. Hammer Bank4. Shuttle Frame1324Figure 5–32 . Spring, Extension, Rem

5–74 Replacement ProceduresSwitch Assembly, Cover Open (Figure 5–33 ) Removal 1. Prepare the printer for maintenance (page 5–3).2. Open the printer co

5–75Replacement ProceduresCard cageFrontShuttle Frame AssemblyCardCageFanPaper feed mechanismsand barrier panelPlatenBase castingPlatenopenmotorPaperf

5–76 Replacement ProceduresSwitch Assembly, Paper Detector (Figure 5–34 )Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the paper

5–77Replacement Procedures1. Screw (4)2. Barrier Shield3. Screw4. Paper Detector Switch Assembly (P/N 29–292976–01)5. Paper Detector Switch Cabl

5–78 Replacement ProceduresSwitch Assembly, Platen Interlock (Figure 5–35 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the print

5–79Replacement Procedures1. Platen Interlock Switch Connector2. Connector P1(P)3. Forms Thickness Lever4. Screw5. Platen Interlock Switch Assembly (P

5–80 Replacement ProceduresTractor (L/R) Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the splined shaft (page 5–62).3. Remove th

A–1Printer ConfigurationA Printer ConfigurationContentsPrinter Configuration A–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A–2 Printer ConfigurationPrinter Configuration IMPORTANTConfiguration directly affects printer operation. Do not change printerconfiguration until you

1–9Maintenance OverviewVerticalPositionKnobTractorLockLeft Tractor DoorRight Tractor DoorHorizontalAdjustmentKnobTractorLockForms Thickness PointerFor

A–3Printer ConfigurationConfiguration Procedure Use the following procedure to configure the printer from the control panel:1. Obtain a configuration

A–4 Printer ConfigurationSaving Configuration Values When you save a set of configuration values they become active every timethe printer is turned on

A–5Printer ConfigurationLoading Configuration Values Configuration values saved using the “Save Config” menu (page A–4)become the power–up default con

A–6 Printer ConfigurationChanging Printer Emulations Emulation refers to the ability of the LG06 to execute the commands of DECLG02/LG31/LN01 printer

A–7Printer ConfigurationConfiguration Diagram The Configuration Diagram is a series of block diagrams showing theconfiguration menu structure and the

A–8 Printer ConfigurationOn–LineOLLoadDDUOL OLOLKIMPORTANT:Save ConfigOLJDoneE(3)PNDUOLF(3) Returns after 1 secondCONFIGURATION DIAGRAM PAGE A–13PAGE

A–9 Printer ConfigurationAUUULG06FontPDNFontCharacter SetDEC Multinat’lDEC Nor./Den.JIS RomanItalySpainDEC Great Brit.GermanyDEC SwedenDEC Fr. Can.ISO

A–10 Printer ConfigurationUULG06PPNNVert. FormsHoriz FormsLeft Mrg nRight Mrg nDUPNNPUULG06Horiz. FormsDUNVert FormsBot Mrg nVert FormsBot. Frm nVert

A–11 Printer ConfigurationBUUProprinter XL Proprinter XLDPNFont Character SetPEmulation FROM PAGE A–8Proprinter XL FontDraft at 10 CPIFontDraft at 12

A–12 Printer ConfigurationProprinter XLPaper FormatIn InchesAt 11.0 InchesDUPNNP*UIn InchesAt 10.5 InchesUPNContinued fromprevious pageUUNNPUUPNUPNFor

1–10 Maintenance OverviewTools, Test Equipment, and SuppliesThe tools, test equipment, and supplies required for field level maintenanceof LG06 printe

A–13 Printer ConfigurationContinued fromprevious pageNUPaper FormatForm Feed at TOFNDN or PEnableDisableForm Feed at TOF*Form Feed at TOFUPUPaper Form

A–14 Printer ConfigurationCUUEpson FX–1050 Epson FX–1050DPNFont CondensedEmulation FROM PAGE A–8Epson FX–1050 FontHS Draft 10FontHS Draft 12DUPNNP*Fon

A–15 Printer ConfigurationFROM PAGE A–8UDKOff–Line DN or PUnidirectionalNoYesUnidirectionalUnidirectionalU*DN or PPMD FaultYesPMD FaultPMD FaultU*UNoP

A–16 Printer ConfigurationCENTRONICSFDGDATAPRODUCTSUU UNNNPPPH(1)Interface FROM PAGE A–8PAGE A–18PAGE A–19OfflineDPPPPN or PN or PSerial EIA–232PNPNPN

A–17 Printer ConfigurationContinued fromprevious pageNPReverse ChannelDPNPNPNPFalseTrueNPRequest to SendDPNPNPNPFalseTrueU UPUNUUN NNP**Request to Sen

A–18 Printer ConfigurationData Bit 8Data Bit 8YesData Bit 8NoData PolarityStandardInvertedData PolarityData PolarityStandardInvertedResponse Pol.Respo

A–19 Printer ConfigurationDData Bit 8Data Bit 8YesData Bit 8NoYesNoData PolarityStandardInvertedHPI IgnoredPI IgnoredPI IgnoredData PolarityData Polar

A–20 Printer ConfigurationPPPRSRSRS RSASCII Swirl All E’s E’s + TOF All H’sASCII SwirlAll E’sE’s + TOF All H’sNRSAll UnderlinesAll BlackRSRunningRunni

B–1Printer SpecificationsB Printer Specifications ContentsCleaning Interval B–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B–2 Printer SpecificationsCleaning Interval Clean the LG06 every 6 months or 1000 hours of operation, whicheveroccurs first. (See page 2–4.)Ribbon Sp

2–1Scheduled Maintenance2 Scheduled MaintenanceChapter ContentsPreventive Maintenance Checks and Services (PMCS) 2–2. . . . . . . . . . . . . . . . .

B–3Printer SpecificationsLabels On Backing: One–part continuous perforated fanfold back form.Labels must be placed at least 0.42 cm (1/6 in) fromthe

B–4 Printer SpecificationsEnvironmental Characteristics Temperature Operating 10° to 40° C (50° to 104° F)Storage – 40° to 70° C (–40° to 158° F)

B–5Printer SpecificationsData Input Rate (maximum) Dataproducts Up to 30 000 characters per secondCentronics Up to 30 000 characters per secondRS–232

B–6 Printer SpecificationsPrinting Rates Printing speed of text is measured in lines/minute, and is a function of theselected font and dot density.

B–7Printer SpecificationsTable B–1. Text Printing RatesPrint Application PerformanceEmulation, Font,and Characters/inchDot Density1Dot Matrix2Uppercas

B–8 Printer SpecificationsDuty Cycle The LG06 text and graphics printer is capable of printing 75 000 pages permonth under the following conditions:

C–1Torque TableC Torque TableIMPORTANTTorque values specified in replacement procedures (Chapter 5) takeprecedence over Table C–1.Table C–1 establishe

C–2 Torque Table

D–1Cable Interconnections and Hammer Bank WiringD Cable Interconnections and HammerBank WiringTable D–1 lists the LG06 cable assemblies and their part

D–2 Cable Interconnections and Hammer Bank WiringCommonJ1ControllerLG06 INTERCONNECTION DIAGRAM Multi I/OCableAssyP1PCBAJ3ControlPanelAssyP1J2CCB(J)W1

2–2 Scheduled MaintenancePreventive Maintenance Checks and Services (PMCS)Perform preventive maintenance checks and services (PMCS) every sixmonths or

D–3Cable Interconnections and Hammer Bank WiringHammer Bank Wiring DiagramNOTES:1. Coil 48 is wired, but notused.2. Hammer springs 1 and 49are not use

D–4 Cable Interconnections and Hammer Bank Wiring

E–1Principles of OperationE Principles of OperationContentsFunctional Elements of the Printer E–2. . . . . . . . . . . . . . . . . . . . . . . . . . .

E–2 Principles of OperationFunctional Elements of the Printer The principal functional elements of the LG06 printer are the commoncontroller board (CC

E–3Principles of OperationCommon Controller PCBA The heart of the LG06 Text and Graphics printer is the common controllerprinted circuit board assembl

E–4 Principles of OperationCommunicating with the Host ComputerThe CCB processes three kinds of computer input: Centronics parallel,DataProducts paral

E–5Principles of OperationDATA PROCESSINGRTPUREAL–TIME PROCESSING UNITUNIT64180PROCESSORDMA CONTROLLERDOT PLUCKERFIRE TIMEREPROMSHARED MEMORYHammerDri

E–6 Principles of OperationMechanical InterfaceThree mechanical operations are coordinated in printing: paper motion,ribbon motion, and shuttle motion

E–7Principles of Operationthe ribbon/shuttle processor (RSP) is a 2400 baud asynchronous serial line. Amessage protocol is used to communicate ribbon

E–8 Principles of OperationRTPU; it is sixteen bits wide and is arbitrated on a cycle–by–cycle basis. The8032 chip has its own eight bit local bus. Th

LG06Text and Graphics PrinterMaintenance ManualOrder Number: EK–ELG06–MGDigital Equipment Corporation • Merrimack, NH 03054

2–3Scheduled MaintenanceInspecting the PrinterCorrect any condition found during inspection that could affect printerperformance or reliability.Table

E–9Principles of Operationfrom the FTIC, which synchronizes paper motion with shuttle motion. The64180 programs the PFC 8032 at the beginning of each

E–10 Principles of OperationDATA PROCESSING UNIT (DPU)PAPER FEED68010CONTROLLEREPROMFromHostComputerToHammerREAL–TIME PROCESSING UNITMICROPROCESSOR512

E–11Principles of OperationMechanism Driver PCBA The mechanism driver board, acting on commands from the CCB, controlsreal–time operation of the elect

E–12 Principles of Operationprovide direct digital PWM drive signals for the ribbon motor PWMamplifier. The 8032 drives the ribbon motors through PWM

E–13Principles of OperationMDIC ASIC. The CCB writes a word to the 8032, which writes a word to theMDIC. The MDIC generates a clock signal based on th

E–14 Principles of OperationThe Magnetic Pick–up Unit (MPU)The magnetic pick–up unit (MPU) is mounted next to the shuttle motorflywheel. It provides t

E–15Principles of Operationthan 15 V in less than 200 milliseconds and requires recycling of the circuitbreaker (ac input) to reset the latch.The + 5

E–16 Principles of OperationShuttle Frame and Hammer Bank AssembliesDots are printed by 47 hammer springs mounted on the hammer bank. Thehammers are a

E–17Principles of OperationThe hammer springs forward, strikes the ribbon and paper, and leaves a dotimpression of the hammer tip on the paper.The co

E–18 Principles of Operation******1 13 135 1 357 1357 912345671234561234512341217653421123*NOTE: = Hammer Released and Dot Printed= Hammer Not Release

2–4 Scheduled MaintenanceCleaning the Printer CAUTIONDo not use abrasive cleaners, particularly on the window. Do not dripwater into the printer. Dama

E–19Principles of OperationPaper Transport System The paper transport system accepts continuous, fan–folded, edge–perforatedpaper from three to 16 inc

E–20 Principles of OperationRibbon Transport System The printer ribbon winds and unwinds continuously on a pair of spoolslatched to hubs which are dri

F–1Ferrite Noise Suppression CoresF Ferrite Noise Suppression CoresFerrite cores reduce radio frequency interference (RFI) with electronicequipment lo

F–2 Ferrite Noise Suppression CoresCard CageShuttle Frame AssemblyHammer BankFanCardCageFanPaper feed mechanismsand barrier panelPlatenBase castingPla

1IndexNumbers48 Volt Failed, 3–2AAdjustments, 4–1hammer phasing, 4–4paper drive motor pulley alignment, 4–10paper feed timing belt tension, 4–6paper s

2printing conventions, 1–3Cores, noise suppression, F–1Cover assemblyhammer bank, replacement, 5–22shuttle, replacement, 5–24Covers and doors, locatio

3Hex code printout, 3–29Hub, ribbon, replacement, 5–58IICs, location and replacementCCB, 5–52Mech. Driver, 5–54Important notes, 1–2Informationhow to l

4Part Numbers, 5–3PCBA, replacementcontroller, 5–46mechanism driver, 5–48power supply, 5–50Phasing adjustment, 4–4Physical Inspection, 2–3Platenangle

5mechanism driver PCBA, 5–48multi I/O cable assembly, 5–14paper detector switch assembly, 5–76paper feed drive motor, 5–38paper feed timing belt, 5–4p

6platen interlock switch assembly, replace-ment, 5–78Switch, power, replacement, 5–18Switches, locations and operation, 1–6TTension adjustmentpaper fe

2–5Scheduled Maintenance11. Wipe the lower cabinet interior with a clean, lint–free cloth dampenedwith water and mild detergent or window cleaning sol

2–6 Scheduled MaintenanceCleaning the Shuttle Frame Assembly (Figure 2–2) 1. Remove the shuttle cover assembly (page 5–24).2. Remove the shuttle frame

2–7Scheduled MaintenanceHammer TipHammer BankRoll pin (2)(Not shown)Thin plateThick plateCover AssemblyFigure 2–2. Cleaning the Shuttle Frame Assembly

2–8 Scheduled MaintenanceCleaning the Card Cage Fan Assembly (Figure 2–3)1. Open the printer cover.2. Remove the paper guide assembly (page 5–42).3. V

3–1Troubleshooting3 TroubleshootingChapter ContentsIntroduction 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2 TroubleshootingIntroduction This chapter contains procedures for troubleshooting printer malfunctions.You must operate the printer to check printe

3–3TroubleshootingInstruction NoYesIndication4. Disconnect cable assemblyW1, CCB/Mech Driver, fromconnector J1 on the CCB andconnector J6 on the MechD

3–4 TroubleshootingDynamic RAM Fault *Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Dynamic

2nd Edition, July 1992 Digital Equipment Corporation 1991, 1992All Rights ReservedThe information in this document is subject to change without notic

3–5TroubleshootingHam. Bank Hot * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Ham. Bank Ho

3–6 TroubleshootingHam. Coil Open * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Ham. Coil

3–7TroubleshootingHam. Coil Short * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Ham. Coil

3–8 TroubleshootingHam. Drv. Short * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Ham. Drv.

3–9TroubleshootingMech Driver Hot * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Mech Drive

3–10 TroubleshootingMech Driver Link * Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Mech Dr

3–11TroubleshootingPaper Jam Instruction Indication Yes No1. Inspect paper path forbunched, torn, folded paperor labels.Paper path is clear. Step 2. R

3–12 TroubleshootingPaper Out Instruction Indication Yes No1. Load paper. —Step 2.—2. Run a diagnostic self–test(page 3–26).“Paper Out” message. Repla

3–13TroubleshootingPlaten Open Instruction Indication Yes No1. Load paper. —Step 2.—2. Close forms thickness lever. —Step 3.—3. Run a diagnostic self–

3–14 TroubleshootingRibbon Stall Instruction Indication Yes No1. Check that forms thicknesslever is not closed too tightly;this can jam the ribbon and

iTable of Contents1Maintenance OverviewAbout This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related

3–15TroubleshootingShttl Cover Open Instruction Indication Yes No1. Inspect shuttle cover forwarping, damage, or missingmagnet. (The magnet coversthe

3–16 TroubleshootingShuttle Jam Instruction Indication Yes No1. Check the forms thicknesslever: if it is set too tightly, itcan slow the shuttle enoug

3–17TroubleshootingSoftware Error *Instruction Indication Yes No1. Set power switch to O (off).Wait 15 seconds. Set powerswitch to 1 (on).“Software E

3–18 TroubleshootingSymptoms Not Indicated by Fault Messages Troubleshoot malfunctions not indicated by fault messages using standardfault–isolation t

3–19TroubleshootingTroubleshooting Aids • Printer Confidence Check (page 3–20). This proceduresystematically checks basic printer operations and func

3–20 TroubleshootingPrinter Confidence Check Instruction Indication Yes No1. Check that printer is pluggedinto correct power source.(Ref.: User’s Manu

3–21TroubleshootingDiagnostic Check of Microprocessors This procedure checks the operation of the microprocessors and IC chips onthe Common Controller

3–22 TroubleshootingCCB (page 5–46), and check that all ROM chips are inserted inthe correct position and with all pins inserted correctly.This check

3–23Troubleshootingcable to connector J3 on the CCB, and start over at step 1. If thedisplay is still blank, or has a black line, and the 68010 LEDlig

3–24 Troubleshootingprinter. A break–out box works, but will not debug XON/XOFFor other RS–232 data protocols. If the printer is sending XOFF,the host

iiRibbon Stall 3–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shttl Cover Open 3–15. . . . . . . . . . .

3–25Troubleshootingon the CCB at C12 and D12, especially if they are absent. Garblecan also result from failed termination resistors or parallel logic

3–26 Troubleshootingc. If the display reads “Diagnostic Tests in Progress” and 68010LED has been on for 20 seconds or more but is not blinking, itmean

3–27Troubleshooting• Es plus TOF A pattern of all Es followed by a form feed to thenext page top of form, useful for identifying paper motion or feed

3–28 Troubleshooting• Phasing A hammer timing parameter that permits you to adjustthe vertical alignment of dots in character printing. (See page 4–4

3–29TroubleshootingHex Code Printout Hex dumps list all ASCII character data received from the host computerwith their corresponding two–digit hexadec

3–30 Troubleshooting

4–1Adjustment Procedures4 Adjustment Procedures Chapter ContentsPreparing the Printer for Maintenance 4–2. . . . . . . . . . . . . . . . . . . . . . .

4–2 Adjustment ProceduresPreparing the Printer for Maintenance WARNING Unless otherwise directed, do adjustment procedures with the printerdisconnecte

4–3Adjustment Procedures1. Shuttle Cover2. Screw, Button–Head (3)3. Paper Scale231Figure 4–1 . Paper Scale Adjustment

4–4 Adjustment ProceduresHammer Phasing Adjustment (Figure 4–2 ) NOTE: Hammer phasing must be checked and adjusted when PROMs onthe common controller

iiiCircuit Breaker 5–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Panel Assembly 5–20. . . . . . . . .

4–5Adjustment ProceduresCORRECT NEEDSADJUSTMENTNEEDSADJUSTMENTFigure 4–2 . Hammer Phasing Adjustment

4–6 Adjustment ProceduresPaper Feed Timing Belt Adjustment (Figure 4–3 ) 1. Prepare the printer for maintenance (page 4–2).2. Open the printer cover.3

4–7Adjustment Procedures1. Timing Belt Shield2. Motor Mount Bolt (2)3. Paper Feed Drive Motor2132Figure 4–3 . Paper Feed Timing Belt Adjustment

4–8 Adjustment ProceduresPlaten Open Belt Adjustment (Figure 4–4 ) 1. Prepare the printer for maintenance (page 4–2).2. Open the printer cover.3. Remo

4–9Adjustment Procedures1. Belt Cover2. Motor Mount Screw3. Platen Open Pulley4. Left Ribbon Guide5. Set Screw6. Platen Open Motor1235624Figure 4–4 .

4–10 Adjustment ProceduresPaper Drive Motor Pulley Alignment (Figure 4–5 )1. Prepare the printer for maintenance (page 4–2).2. Open the printer cover.

4–11Adjustment Procedures1. Belt Shield2. Set Screw3. Motor Pulley Collar4. Motor Pulley5. Splined Shaft Pulley41235Figure 4–5 . Paper Drive Motor Pul

4–12 Adjustment ProceduresPlaten Open Motor Pulley Alignment (Figure 4–6 ) 1. Prepare the printer for maintenance (page 4–2).2. Open the printer cover

4–13Adjustment Procedures1. Belt Cover2. Set Screw3. Platen Open Motor Pulley4. Platen Shaft Pulley1234Figure 4–6 . Platen Open Motor Pulley Alignment

4–14 Adjustment ProceduresSplined Shaft Skew Adjustment (Figure 4–7 ) If lines of print are not parallel with the edge perforations on the paper,perfo

ivAppendicesA: Printer ConfigurationB: Printer SpecificationsC: Torque TableD: Cable Interconnections and Hammer Bank WiringE: Principles of Operation

4–15Adjustment Procedures1. Screw 2. Adjusting Link12Figure 4–7 . Splined Shaft Skew Adjustment

4–16 Adjustment ProceduresPlaten Angle Adjustment (Figure 4–8 )1. Prepare the printer for maintenance (page 4–2).2. Remove the shuttle cover (page 5–2

4–17Adjustment Procedures1. Forms Thickness Lever2. Platen Position Gauge (P/N 996083)3. Platen4. Clamp Screw5. Setscrew25413Figure 4–8 . Platen Angle

4–18 Adjustment ProceduresPlaten Gap Adjustment (Figure 4–9 )1. Prepare the printer for maintenance (page 4–2).2. Open the printer cover.3. Remove the

4–19Adjustment Procedures1. Forms Thickness Lever2. Feeler Gauge (0.010 inch)3. Platen4. Ribbon Mask5. Set Screw (2)342NOTE:Left side adjustmentshown.

4–20 Adjustment ProceduresRibbon Guide Alignment (Figure 4–10 )1. Open the printer cover.2. Load paper and install the ribbon. The ribbon should have

4–21Adjustment Procedures1. Right Hub2. Screw, Left Ribbon Guide Skid (2)3. Ribbon4. Ribbon Guide, Left5. Screw, Retaining (2)6. Left Spool7. Ribbon G

4–22 Adjustment ProceduresReturning the Printer to Normal Operation 1. Load paper.2. Install the ribbon.3. Close floor cabinet doors and the printer c

5–1Replacement Procedures5 Replacement Procedures Chapter ContentsReplacement Procedures 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–2 Replacement ProceduresPCBA, Mechanism Driver 5–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PCBA, Power Supply 5–50

1–1Maintenance Overview1 Maintenance OverviewChapter ContentsAbout This Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–3Replacement ProceduresReplacement Procedures CAUTIONThe components specified in this chapter are replaced in the field, butmust be repaired at the

5–4 Replacement ProceduresBelt, Paper Feed Timing (Figure 5–1 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3.

5–5Replacement Procedures1. Timing Belt Shield2. Motor Mount Bolt (2)3. Paper Feed Timing Belt (P/N 29–29283–01)4. Motor Pulley5. Splined Shaft Pulley

5–6 Replacement ProceduresBelt, Platen Open (Figure 5–2 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3. Remove

5–7Replacement Procedures1. Belt Cover2. Motor Mount Screw3. Platen Open Belt (P/N 29–29284–01)4. Motor Pulley5. Platen Pulley6. Set Screw1652243Figur

5–8 Replacement ProceduresCable Assembly, Hammer Bank (Figure 5–3 ) RemovalNOTE: This procedure removes the left hammer bank cable assembly. Theproced

5–9Replacement ProceduresCard cage floorFrontPrinter viewed from above, PCBAs removed.Shuttle Frame AssemblyHammer BankFanCardCageFanPaper feed mechan

5–10 Replacement ProceduresCable Assembly, Intermediate (Figure 5–4 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cov

5–11Replacement ProceduresCard cage floorFrontShuttle Frame AssemblyHammer BankFanCardCageFanPaper feed mechanismsand barrier panelPlatenBase castingP

5–12 Replacement ProceduresInstallation1. Feed the intermediate cable assembly (12) through the card cageopening and install tie wraps and cable restr

1–2 Maintenance OverviewAbout This Manual This manual explains how to maintain and repair the LG06 printer at the fieldservice level of maintenance. T

5–13Replacement ProceduresCard cage floorFrontShuttle Frame AssemblyHammer BankFanCardCageFanPaper feed mechanismsand barrier panelPlatenBase castingP

5–14 Replacement ProceduresCable Assembly, Multi I/O (Figure 5–5 )Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3

5–15Replacement Procedures1. Screw (6)2. Fan Duct3. Ribbon Cable Restraints4. Latch (2)5. Ribbon Cable Connector6. Common Controller Connector J17. Sc

5–16 Replacement ProceduresInstallation1. Feed the multi I/O ribbon cable from the lower cabinet up into theopening at the right rear of the card cage

5–17Replacement Procedures1. Screw (6)2. Fan Duct3. Ribbon Cable Restraints4. Latch (2)5. Ribbon Cable Connector6. Common Controller Connector J17. Sc

5–18 Replacement ProceduresCircuit Breaker (Figure 5–6 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the rear cabinet door.3. Rem

5–19Replacement Procedures1. Screw (6)2. Fan Duct3. Circuit Breaker Electrical Lead (4)4. Spring Clip (4)5. Circuit Breaker (P/N 29–29329–01)6. Mounti

5–20 Replacement ProceduresControl Panel Assembly (Figure 5–7 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Open the printer cover.3.

5–21Replacement Procedures1. Control Panel Connector P1 2. Common Controller PCBA3. Wire Saddles4. Screw (4)5. Washer (4)6. Control Panel Assembly (P/

5–22 Replacement ProceduresCover Assembly, Hammer Bank (Figure 5–8 ) Removal1. Prepare the printer for maintenance (page 5–3).2. Remove the shuttle fr