Genicom MatrixPrinter LA36 User Manual

G E N I C O M M a t r i x P r i n t er LA36S e r v i c e M a n u a lGENICOM CorporationGENICOM CorporationGENICOM CorporationGENICOM Corporation

viiTABLESTable 3.1 Errors indicated by the Fault indicator and the buzzer ...3-15Table

5-13c. Continuous forms fed via pull tractor from the bottom slotPaper end is detected by feeler 3 linked to sensor C (detailed in Figure 5.12).It is

5-145.2.5 Print head gap control (paper thickness adjustment)The print head is mounted on the carriage which is guided by the stay shaft. The stay sh

5-155.2.6 Color ribbon shift motor (option)The stepping motor turns the eccentric cam to move the ribbon shift lever, which lifts the color ribbon car

5-165.2.7 Option detection mechanismThis printer has the mechanism that automatically detects whether the tractor unit is installed as a push tractor

5-175.35.35.35.35.3Electrical OperationElectrical OperationElectrical OperationElectrical OperationElectrical OperationThis section briefly explains c

5-18Sensors: Paper select Paper endPower supply100 V: PW34AA200 V: PW34 BAPaper feedmotorControl board (main board)RC98CBAC input100 ~ 200 VAC or220

5-19The LA36N/LA36W controller (Figure 5.17) consists of an printed circuit board, called the printer control boardor the main board with ROM. The MP

5-20InterfaceInterfaceBuzzerRS-423 boardDriver/receiverDriver/receiver(Centronics)MPUResetPower stopMultisensorControl board (main board)Thermal+34V c

5-21The MPU (MB90706) has the following main functions:Timing controllerDynamic RAM controllerAddress decoderInterface controllerMotor controllerFigur

5-22The HDLSI(LSI 2: MBCU20050) has the following main functions:Head pin magnet drive controllerOutput port*EXIOCS*IOWRL*IOWRH*IORDAddressdecoderTIME

5-235.3.2 Main controllerThe main controller circuit of the printer –– the MB90706 MPU –– has a bus connected to 4M-bit ROM, two-16M-bit ROMs, 128K

5-24Table 5.1 shows the memory address map.Table 5.1 Memory address mapAddress area (hex)000000 ~ 0000BF0000C0 ~ 0000FF000100 ~ 00037F000380 ~ 5FFFF

5-255.3.3 Interface control(1) Centronics parallel interfaceReceived data DATA1 to DATA8 is latched to the internal MPU register just after the fallin

5-26(2) RS-423 serial interfaceThe serial interface control circuit is basically the same as the Centronics circuit, except that it has a serial-paral

5-275.3.4 Carriage motor controlThe 4-phase carriage motor, is driven by a constant current chopper drive circuit and six control signals:SPM0: This s

5-28The MPU receives phase excitation data for the stepping motor and sends data to turn the motor drive HIC on oroff. Data is set to high for a phas

5-29The LA36N/LA36W printer has several spacing speeds, and drives the carriage either by 1/2 phase or 2-phaseexcitation, based on speed (Figure 5.27

5-30Figures 5.28 and 5.29 show 1/2-phase and 2-phase excitation.Idle OperatingSPI1, 2SPM0(φA)SPM1(φB)SPM2(φC)SPM3(φD)DrivephaseA A B B C

5-315.3.5 Print head controlOperation from reading print data to driving the pin magnet is as follows (Figure 5.30):1. Print data is read from line bu

5-32If +34 volts goes below the prescribed level during printing, the printer splits one line of printing into three-passprinting to limit the number

1-1CHAPTER 1CHAPTER 1CHAPTER 1CHAPTER 1CHAPTER 1PRINTER SPECIFICATIONS,PRINTER SPECIFICATIONS,PRINTER SPECIFICATIONS,PRINTER SPECIFICATIONS,PRINTER SP

5-335.3.6 Paper feed controlThe 4-phase paper feed motor is driven by four signals:LFM0: This signal drives phase A of the paper feed motor.LFM1: This

5-34Unlike carriage spacing, paper is fed at only one speed (Figure 5.33), and driving is always done using 2-phaseexcitation (Figure 5.34).Paperfeeds

5-355.3.7 Ribbon shift controlThe 4-phase ribbon shift motor is driven by four signals:CLM0: This signal drives phase A of the ribbon shift motor.CLM1

5-36Unlike carriage spacing, ribbon shifting is only at one speed (Figure 5.36), and driving is always done using 1/2-phase excitation (Figure 5.37).

5-375.3.8 Fire check controlFigure 5.38 shows fire check circuits. The fire check protects the carriage motor (SP motor), paper feed motor(LF motor),

5-38d. HDLSIAn internal timer is started by HDLSI after the alarm signal is received and the PWSTOP signal is output tothe power supply after counting

5-395.3.9 Control panel controlThe control panel has 16 LEDs, 7 push-button switches, a buzzer, and an LSI (MB623829) to control them. Theswitch cont

5-405.3.10 Power SupplyThere are two types of power supplies:100-120 VAC input: 29-33026-01 (PW31AA)220-240 VAC input: 29-33027-01 (PW31BA)The power

5-41Figure 5.41 Power supply block diagramBA B CACinletSWNoisefilterRectifiercircuitSurgecurrentpreven-tioncircuitSmooth-ingcircuitMainswitch-ingcir

5-42(3) Main voltage regulation switching (Figure 5.41 C)Smoothed DC voltage is converted to high-frequency on/off voltage by changing the frequency a

1-21.21.21.21.21.2Equipment StructureEquipment StructureEquipment StructureEquipment StructureEquipment Structure1.2.1 OverviewThis section outlines p

5-43b. Secondary circuit protectionOvercurrent protection (OCP)If a short circuit occurs at the load, overcurrent protection starts for the current ra

5-44(5) External signalThe power supply receives the PWSTOP signal (Power Stop signal, connector pin No. 2) from other printercomponents that enables

5-455.45.45.45.45.4Firmware OverviewFirmware OverviewFirmware OverviewFirmware OverviewFirmware OverviewLA36N/LA36W firmware, stored in ROM, is separa

6-1No FJ PARTS NO. PARTS DESC. LA36 Section tobe RemarksN W referred to1 CA02744-J301 Main Board with ROM X X 4.9.1 (8)Control board2 CA20160-B30X Mai

6-2( ) in the "Section to be referred to" column means the section can be used for replacing the part.The "Remarks" column include

LA36 SPARE PARTS CROSS REFERENCE LISTOption Used-onCompaq Classic Spare P / NDigital Classic Spare P / NCompaq Description Mfg Part ~VPN~ Purchase Ord

LA36N155093-00129-34626-C1Printer Mecha AssyCA02929-D222CA02743-F202LA36N155099-00129-34632-01Upper cover sub AssyCA02929-D245CA02743-G024LA36N155095-

1-31.2.3 StructureMajor printer components are organized as shown below. Items in boldface are recommended spare parts (seeChapter 6) that can be rep

1-4(1) Upper cover assemblyThe screws (two for the LA36N and three for the LA36W) on the back, fasten the upper cover to the bottomcover. The upper c

1-5f. Cut-sheet standThe cut-sheet stand catches printed pages ejected by the printer. It must be raised while printing cut sheetsand laid down while

1-6(3) Lower cover assemblyFigure 1.4 Printer lower assembly (LA36N)a. Bottom coverThe bottom cover supports the printer mechanism.b. Printer control

2-1CHAPTER 2CHAPTER 2CHAPTER 2CHAPTER 2CHAPTER 2UNPACKING, PERFORMANCE CHECK,UNPACKING, PERFORMANCE CHECK,UNPACKING, PERFORMANCE CHECK,UNPACKING, PERF

2-22.32.32.32.32.3UnpackingUnpackingUnpackingUnpackingUnpackingUnpack the printer as follows (Figure 2.1):1. Open the carton and remove accessories —

The contents of this manual may be revised without prior notice.All Rights Reserved, Copyright © 2000 GENICOM Corporation.No part of this manual may b

2-33. Remove tape securing the acoustic cover. Adhesive tape is applied along the front edge of the acousticcover. For LA36W printers, two adhesive

2-42.42.42.42.42.4Inspection after UnpackingInspection after UnpackingInspection after UnpackingInspection after UnpackingInspection after Unpacking1.

3-1CHAPTER 3CHAPTER 3CHAPTER 3CHAPTER 3CHAPTER 3TROUBLESHOOTINGTROUBLESHOOTINGTROUBLESHOOTINGTROUBLESHOOTINGTROUBLESHOOTINGThis chapter helps pinpoint

3-2Figure 3.1 shows printer functional components and connecting cables without showing their names sincelocating the connectors is easy.Printer contr

3-3e. Power supplyThe power supply provides power for operating the printer. Its specifications depend on the input ACvoltage.f. Color ribbon shift m

3-43.13.13.13.13.1All Indicators Don't LightAll Indicators Don't LightAll Indicators Don't LightAll Indicators Don't LightAll Indi

3-5$ Note:To check DC voltage, use the output connector to the printer control board. Pin assignment of voltagesare as follows:Do voltage check.Unplu

3-63.23.23.23.23.2No Print Head MovementNo Print Head MovementNo Print Head MovementNo Print Head MovementNo Print Head MovementThe flowchart below sh

3-7NoYesNoYesYesNoYesNoThe Fault indicator lights and the buzzer sound once.Are continuous forms in the printer?Set continuous forms in the printer an

3-8Connect the interface cable.Replace the interface cable.See page 3-5, DC voltage check.Use the correct protocol.Use the correct baud rate.Use the c

PREFACEThis manual is for engineers who operate, install, or maintain the GENICOM Matrix Printer LA36N/LA36W.The topics covered are:Chapter 1: Printer

3-93.33.33.33.33.3Incorrect Printing due to Defective Nonvolatile RAMIncorrect Printing due to Defective Nonvolatile RAMIncorrect Printing due to Defe

3-103.43.43.43.43.4Printing Quality AbnormalPrinting Quality AbnormalPrinting Quality AbnormalPrinting Quality AbnormalPrinting Quality AbnormalThe fl

3-11See page 3-12.• Defective printer control board• Defective power supply boardPlug in the connector correctly.Replace the cable.Replace the cable

3-12RecoveredPlug in the carriage cable correctly.Install the ribbon cartridge correctly.Set the paper thickness levercorrectly.Install the color kit

3-133.53.53.53.53.5Forms Feed AbnormallyForms Feed AbnormallyForms Feed AbnormallyForms Feed AbnormallyForms Feed AbnormallyThe flowchart below shows

3-14Check the page length setting insetup mode.Forms are fed smoothly but there isstill a problem.Is the length of the forms fed toolong or short?End[

3-15Fault indicatorLighting steadilyFlashingFlashingFlashingFlashingBuzzer soundSounds onceSounds onceSounds onceSounds onceSounds continuouslyError c

4-1CHAPTER 4 MAINTENANCECHAPTER 4 MAINTENANCECHAPTER 4 MAINTENANCECHAPTER 4 MAINTENANCECHAPTER 4 MAINTENANCEThis chapter explains the mainte

4-24.34.34.34.34.3Maintenance ToolsMaintenance ToolsMaintenance ToolsMaintenance ToolsMaintenance ToolsTable 4.1 lists the tools required for maintena

4-34.64.64.64.64.6Parts DrawingsParts DrawingsParts DrawingsParts DrawingsParts DrawingsThis section gives basic components and their location.Figure

iCONTENTSCHAPTER 1 PRINTER SPECIFICATIONS, PERFORMANCE, AND CONFIGURATION ...1-11.1 Overview ...

4-44.74.74.74.74.7Parts That Must Not Be DisassembledParts That Must Not Be DisassembledParts That Must Not Be DisassembledParts That Must Not Be Disa

4-54.84.84.84.84.8Level 1 MaintenanceLevel 1 MaintenanceLevel 1 MaintenanceLevel 1 MaintenanceLevel 1 MaintenanceLevel 1 maintenance includes only cle

4-64.94.94.94.94.9Level 2 MaintenanceLevel 2 MaintenanceLevel 2 MaintenanceLevel 2 MaintenanceLevel 2 MaintenanceLevel 2 maintenance includes lubricat

4-7Acoustic coverInstallationHold the acoustic cover vertically. Then, push the mounting pins on both side of the acoustic cover into thehook of the

4-8(2) Tractor unit replacementa. Push tractorRemoval1. Raise the cut-sheet stand and the back cover together.2. Pull up both ends of the tractor unit

4-9b. Pull tractorRemovalHold both sides of the tractor unit and lift and release it from the support studs.

4-10InstallationPosition the catches of the tractor unit on the support studs near the platen shaft, push the tractor unit toward thefront of the prin

4-11(3) Cover replacement, including platen knobRemoval1. Remove the acoustic cover (Section 4.9.1(1)).2. Remove the tractor unit (Section 4.9.1(2)).3

4-125. Raise the cut-sheet stand and the back cover together, then remove them in the direction of the arrow (A).

4-136. Remove the ribbon cartridge.7. Remove the screws (two for LA36N; three for LA36W).8. Lift the back part of the upper cover.9. Disconnect the co

ii4.9 Level 2 Maintenance ...

4-14InstallationInstall covers in reverse order of removal.Notes:Be sure that the control panel cable is inserted behind the cable holder.Check that t

4-15(4) Control panel replacementRemoval1. Remove the tractor unit (Section 4.9.1 (2)) and covers (Section 4.9.1 (3)).2. Turn the upper cover upside d

4-16(5) Printing mechanism replacementRemoval1. Remove the tractor unit (Section 4.9.1 (2)) and covers (Section 4.9.1 (3)).2. Remove the two screws.3.

4-17(6) Power supply and fuse replacementRemoval1. Remove the fuse from the power supply, if necessary.2. Disconnect AC and CNPW connectors.3. Remove

4-18(7) RS-423 board replacementRemoval1. Remove the two screws using the screwdriver M2-M2.5 (for Phillips screws).2. Unplug the CNRS connector from

4-19(8) Control board (ROM board) replacementFrom the point of the engineers, the control board is referred to by different names: printer control bo

4-20hInstallationInstall the control board (ROM board) in reverse order of removal.Notes:For LA36W printers, be sure to install the grounding metal st

4-21(9) Platen roll assembly replacementRemoval1. Remove the tractor unit (Section 4.9.1 (2)) and covers (Section 4.9.1 (3)).2. Move the paper select

4-22(10) Paper feed motor (LF motor) replacementRemoval1. Remove the printing mechanism (Section 4.9.1 (5)).2. Remove the motor cable from the cable c

4-23(11) Space motor (SP motor) assembly replacementRemoval1. Remove the printing mechanism (Section 4.9.1 (5)).2. Remove the two screws to remove the

iii4.10 Diagnostics ...

4-24(12) Sensor T assembly replacementThis sensor detects a cut sheet placed on the cut-sheet stand.Removal1. Remove the tractor unit (Section 4.9.1 (

4-25(13) Carriage unit replacementRemoval1. Remove the printing mechanism (Section 4.9.1 (5)), SP motor (Section 4.9.1(11)), and print head (Section4.

4-26InstallationInstall the carriage unit in reverse order of removal.Note:Check that the gear in the carriage unit engages with the rack on the front

4-27(14) Print head and rebbon feed assembly replacementThe print head and the ribbon feed assembly are mounted on the carriage unit. The print head

4-28(15) Gear assembly replacementThe gear assembly transmits power to the paper feed mechanism. It has a mechanism that determines whetherpower is a

4-29(16) Paper feeder assembly replacementRemoval1. Remove the printing mechanism (Section 4.9.1(5), platen assembly (Section 4.9.1(9)), print head

4-30(17) Card guide assembly replacementRemoval1. Remove the platen assembly (Section 4.9.1(9)), print head (Section 4.9.1(14)), and feed roller assem

4-31(18) Ribbon shift unit (color kit) replacementRemoval1. Open the front cover, remove the ribbon cartridge, and remove the print head (Section 4.9.

4-324.9.2 Adjustment(1) Print head gap adjustmentWhen replacing the carriage unit or platen, check that the gap between the print head and platen is 0

4-337. Move the carriage unit to the left-end print position (column 1).8. Turn adjustment lever L at the left end of the stay shaft and adjust it so

iv5.3.7 Ribbon shift control ...

4-34(2) Vertical alignmentWhen replacing the ROM board (printer control board) or the carriage unit, check the vertical alignment byusing the diagnost

4-353. Check that alignment is correct.4. If alignment is not correct, press the ® or ¬ button to correct alignment. That is, if forward printing b

4-36(3) Top-of-forms adjustment (factory use)Top-of-forms (TOF) adjustment in this item is used in the factory to micro-adjust the reference position

4-374.9.3 LubricationLubrication is required only when the printer is overhauled or mechanical components are replaced.Lubrication codes are as foll

4-38(1) Ribbon drive assemblyNo.123LocationGear teeth (4 places)Gear bearing (4 places)Inside the drumRemarksAmountCCCOilSGSGSG1-SG-C-03-SG-C-02-SG-C-

4-39(2) Color ribbon shift motor (Option)No.123LocationCam centerGear teethCamRemarksAmountCCCOilSGSGSG1-SG-C-02-SG-C-03-SG-C-0RS motor AsyShift lever

4-40(3) LF gear bearing and continuous/single leverNo.1234LocationGear teeth (4 places)(Gear A, B, C, D)Gear bearing (4 places)(Gear A, B, C, D)Gear s

4-41(4) Back cover assemblyNo.12LocationSliding section betweencarriage unit and stay shaftSliding section betweencarriage unit and front stayRemarksO

4-42(5) Paper feed roller shaftNo.1LocationFeed roller shaftRemarksAmountCOilSG1-SG-C-0Holder TY517Rear stay TPaper cradleFeed roller R Asy

4-43(6) ShaftNo.1Location lubricatedStay shaftRemarksAmountCOilFLFG shaft springY304Adjustment lever LY307Stay shaft Asy1-FL-C-0

vILLUSTRATIONSFigure 1.1 LA36N and LA36W printers ...

4-44(7) Stay shaftNo.12LocationGear holder bossChange lever bossRemarksAmountCCOilSGSGChange leverY420031-SG-C-0PS SpringY4272-SG-C-0

4-45(8) Front and top covers (LA36N)No.12LocationHinge (two places)Hinge (two places)RemarksBoth sidesBoth sidesAmountCCOilSGSG1-SG-C-O2-SG-C-O

4-46(9) Front and top covers (LA36W)No.12LocationHinge (two places)Hinge (two places)RemarksBoth sidesBoth sidesAmountCCOilSGSG1-SG-C-O(2-SG-C-O)2-SG-

4-47(10)Sheet guide assemblyNo.123LocationSliding sectionSliding sectionBoss (four places)RemarksWipe off excess oil after applyingWipe off excess oil

4-484.104.104.104.104.10DiagnosticsDiagnosticsDiagnosticsDiagnosticsDiagnostics4.10.1 Self-test printingSelf-test printing produces test pages indepen

4-49(2) Checking printer performanceThe self-test printing pattern includes the following:• Header (If started from Set-Up mode)• Help menu briefly ex

4-504.10.2 Hex dumpIn hex dump, the printer prints data and commands in 2-digit hexadecimal code. The interface operation is thesame as online in Nor

4-51●:Buttons to be held down when turning power on.* Loads factory defaults into EEPROM and sets Normal mode.Vertical alignment, Top-of-Forms adjustm

5-1CHAPTER 5 PRINCIPLES OF OPERATIONCHAPTER 5 PRINCIPLES OF OPERATIONCHAPTER 5 PRINCIPLES OF OPERATIONCHAPTER 5 PRINCIPLES OF OPERATIONCHAPTER

5-25.25.25.25.25.2Mechanical OperationMechanical OperationMechanical OperationMechanical OperationMechanical Operation5.2.1 Print head driveThe print

viFigure 5.26 Phase switching and carriage drive direction ...5-28Figure 5.

5-35.2.2 Carriage driveThe print head carriage is moved by the 4-phase space motor (SP motor in the recommended spare parts) in theleft corner of the

5-45.2.3 Ribbon feedRibbon is fed by the ribbon feeder on the bottom of the print head carriage. This mechanism links carriagemovement to ribbon move

5-55.2.4 Paper feedPaper is fed by the 4-phase paper feed motor (LF motor) on the left side of the frame which rotates the platenand operates the trac

5-6(1) Continuous forms feedingA pair of left and right pin belt tractors on the square tractor shaft feed continuous forms. The tractor is installed

5-7b. Pull tractorContinuous forms fed from the bottom slot, advance along the card guide on the carriage, then, move up overthe platen.Figure 5.7 C

5-8(2) Cut-sheet feedingAs the platen rotates, a cut sheet is pinched between the feed roller and platen and fed forward.To pass the printing section,

5-9(3) Paper selectionSince continuous forms and cut sheets are fed differently, the paper feed mechanism is based on the type ofpaper.When the paper

5-10(4) AutoloadingIn autoloading, paper is loaded up to a specified position without turning the platen knob. Once the FF/Loadbutton on the control

5-11(5) Paper end detectiona. Cut sheetThe presence of paper and paper near end position are detected by sensor A, an interrupt photosensor in thesens

5-12b. Continuous forms fed via push tractorThe top of continuous forms is detected by sensor B (detailed in Figure 5.11) and by feeler 1 linked to se