Epson LX-1050+ Service Manual

EPSON TERMINAL PRINTERLX-1050+SERVICE MANUALEPSON4003283,’,,

General DescriptionLX-105O+ Service ManualTable 1-1 lists the optional units available for the LX-1050+.Table 1-1. Options for LX-105O+Cat. No. Descri

LX-105O+ Service ManualGeneral Description1.2 SPECIFICATIONSThis section provides detailed statistics for this printer.1.2.1 Printing SpecificationPri

General DescriptionLX-105O+ Service Manuallot matrix format:9 X 9 Text mode (Draft)18X 20 Text mode (NLQYtaracter sets:~haracter tables:13 internatio

LX-105O+ Service ManualGeneral Description1.2.2 Paper Handling SpecificationLine spacing:1/6 inch or 1/8 inch, or programmable in units of 1/216 inchL

General DescriptionLX-105O+ Service Manual13 mm min.Continuous paperI345.4 mm max.➤o000IPrintable area4---Do0000.————————————c1000nu00013 mm min.Adjus

LX-105O+ Service ManualGeneral Description1.2.4 Ink RibbonType:#8755 Ribbon CartridgeColor:BlackReliability:3 million characters at 14 dots/character1

General DescriptionLX-105O+ Service Manual1.3 INTERFACE OVERVIEWCentronics parallel interfaceOptional Type A interfaceParallel InterFaceThe LX-105O+ i

LX-105O+ Sewice ManualGeneral Description—. . .. -. . — . ..- . .Table 1-6. Connector Pin Assignments and Signal Functions (Cont.)Pin No.Signal Name1

General DescriptionLX-105O+ Service Manual1.4 PRINTER OPERATIONSThis section describes the basic operations of the printer.1.4.1 Control PanelThe cont

LX-105O+ Service ManualGeneral Description1.4.2 SelecType FunctionsSelecType allows the user to choose fonts and the printing mode easily. This functi

NOTICEAll rights reserved.Reproduction of any part of this manual in any form whatsoever withoutSEIKO EPSON’s express written permission is forbidden.

General DescriptionL.X-1050+ Service Manual1.4.5 DIP Switch SettingsThe two DIP switches are located on the side of the printer and function as shown

LX-105O+ Service ManualGeneral DescriptionTable 1-9. Character Table Selection (DIP SW 1-5: ON)Sw 1-6Sw 1-7Sw 1-8~:pj:;dIndia:?:/::LatinSouthversionVe

General DescriptionLX-105O+ Service Manual1.4.6 Buzzer OperationThe buzzer sounds under the following conditions:BEL code:Carriage trouble:PaperQut:Ab

LX-105O+ Service ManualGaneral Description1.5 MAIN COMPONENTSThe main components of the LX-105O+ printers are designed for easy removal and replacemen

General DescriptionLX-105O+ Service Manual1.5.2 TAa Filter UnitThe TAa filter unit contains a power cord (120V Version) or AC inlet (220/240V Version)

Chapter 2 Operating PrinciplesTable of Contents2.1 OVERVIEW2-12.2 OPERATING PRINCIPLES OF THE PRINTER MECHANISM2-12.2.1 Printhead Printing Operation .

List of TablesTable 2-1. Ribbon-Feed Gear Train. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Table 2-2. Voltage Applications

LX-105O+ Service ManualOperating Principles2.1 OVERVIEWThis section describes the operating principles of the printer mechanism and the electrical cir

Operating PrinciplesLX-105O+ Service Manual2.2.1 Printhead Printing OperationThe dot-wire operation during printing is as follows. When the head-drivi

LX-1050+ Service ManualOperating Principles2.2.2 Carriage Drive MechanismThe carriage mechanism includes the printhead, the carriage, the timing belt,

PRECAUTIONSPrecautionary notations throughout the text are categorized relative to 1) personal inju~ and 2)damage to equipment.DANGER Signals a precau

Operating PrinciplesLX-105O+ Service Manual2.2.3 Paper Feed Mechanism OperationFriction feeding is used for cut sheets, and push tractor feeding is us

LX-105O+ Service ManualOperating PrinciplesPush Tractor Feed OperationWhen the push tractor unit is used, the paper is set such that its holes mesh wi

Operating PrinciplesLX-105O+ Service Manual2.2.3.1 Paper End SensorFollowing figure show the paper end sensor. This sensor switch is ON when no pape

LX-105O+ Service ManualOperating Principles2.2.4 Ribbon Advance MechanismThe ribbon-feed mechanism consists of the ribbon cartridge and the ribbon-fee

Operating PrinciplesLX-105O+ Service Manual2.3 OPERATING PRINCIPLES OF THE ELECTRICAL CIRCUITRIESThis section describes principles of electrical circu

LX-105O+ Service ManualOperating Principles2.3.2 Operating Principles of the Main Control CircuitThe printer CPU is an 8-bit CPU ~D7810HG running at 1

Operating PrinciplesLX-105O+ Service ManualTable 2-3. Functions of the Main IC and CircuitsIC and CircuitsLooationFunctionsReceives data from the host

LX-105O+ Service ManualOperating Principles2.3.2.2 Sensor CircuitFollowing figure shows the sensor circuit in block diagram. The PAO of CPU port sense

Operating PrinciplesLX-1050+ Service Manual2.3.2.4 Paper Feed Motor Drive CircuitThe paper-feed motor drive circuit is shown in following figure. me

LX-105O+ Service ManualOperating Principles2.3.2.5 Printhead Drive CircuitGate array E05A30 is used as an 8-bit + l-bit data latch. The CPU determines

PREFACEThis manual describes functions, theory of electrical and mechanical operations, maintenance, and repairof LX-105O+.The instructions and proced

Operating PrinciplesLX-105O+ Service Manual2.3.2.6 Host InterfaceThe host interface circuit is shown in following figure. STROBE pulses from the host

LX-105O+ Service ManualOperating Principles2.3.2.7 EEPROM CircuitThe EEPROM stores in its memory the current feed position of continuously fed paper,

Chapter 3 Disassembly and AssemblyTable of Contents3.1 GENERAL REPAIR INFORMATION3-13.2 DISASSEMBLY AND ASSEMBLY3-23.2.1 Printhead Removal . . . . . .

Figure 3-25. Paper Guide Plate Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16Figure3-26. Adjust l_everRernoval . . . . . . .

LX-105O+ Service ManualDisassembly and Assembly3.1 GENERAL REPAIR INFORMATIONThis chapter describes the procedures for removin~ replacins and adjustin

Disassembly and AssemblyLX-105O+ Service Manual3.2 DISASSEMBLY AND ASSEMBLYThis section details the disassembly procedures for the LX-105O+. As a

LX-105O+ Service ManualDisassembly and Assembly[Step 3] Unlock the two levers securing the printhead to thecarnage bypulhngthemdown. Thenlift and remo

Disassembly and AssemblyLX-105O+ Service Manual3.2.2 Removal of CasingThis section details the procedure for removing the upper casing and the control

LX-105O+ Service ManualDisassembly and Assembly[Step 5] While lifting the upper casing, discomect the cable of the control panel from connectorCN3 on

Disassembly and AssemblyLX-105O+ Service Manual3.2.2.2 Control Panel Removal[Step 1] Remove the upper casing (as described in the previous section).[s

REVISION SHEETRevision Issue DateRevision PageRev. AMay 18, 19941st issue-v-

LX-105O+ Service ManualDisassembly and Assembly3.2.3 Removal of Circuit BoardsThis section describes the procedure for removing the TAMA Board and the

Disassembly and AssemblyLX-1050+ Service Manual3.2.3.2[Step 1][Step 2][Step 3][Step 4]TA-a Filter Unit RemovalRemove the upper casing (See section 3.

LX-105O+ Service ManualDisassembly and Assembly3.2.5 Disassembly of Printer MechanismThis section details the removal of components from the printer m

Disassembly and AssemblyLX-105O+ Service Manual3.2.5.2 Removal of Home-Position Sensor[Step 1] Remove the printer mechanism. (See section3.2.[Step 2

LX-105O+ Service ManualDisassembly and Assembly3.2.5.3 Removal of Platen[Step 1] Remove the printer mechanism. (See section 3.2.4)[Step2] Remove the p

Disassembly and AssemblyLX-105O+ Service Manual3.2.5.4 Separate of Frame[Step 1] Remove the platen. (See section 3.2.5.3)[Step 2] Remove the printhead

LX-105O+ Service ManualDisassembly and Assembly[Step 6] Push thetwonotches of the release lever outward. Remove the release lever.\Figure 3-18. Releas

Disassembly and AssemblyLX-105O+ Service Manual[Step 7] Separate the tractor cancellation cum from paper feed lever cancellation shaft.an-2iiB\Paw,Tra

LX-105O+ Service ManualDisassembly and Assembly[Step9] Remove the two C.B.S-tite. (0) (M3 x 6) screws which are securing the side frames to thebase fr

Disassembly and AssemblyLX-105O+ Service Manual3.2.5.6[Step 1][Step 2][Step 3]3.2.5.7[Step 1][Step 2][Step 3]Removal of Paper End SensorSeparate side

TABLE OF CONTENTSCHAPTER 1.CHAPTER 2.CHAPTER 3.CHAPTER 4.CHAPTER 5.CHAPTER 6.APPENDIXGENERAL DESCRIPTIONOPERATING PRINCIPLESDISASSEMBLY AND ASSEMBLYAD

LX-105O+ Service ManualDisassembly and Assembly3.2.5.8 Removal of Carriage[Step 1] %paratesideframes from base frame. (Seesection3.2.5 .4)[Step 2] Rem

Disassembly and AssemblyLX-105O+ Service Manual[Step 2] Remove the tractor set L, the paper support, and tractor set R from the tractor andsprocket gu

Chapter 4 AdjustmentsTable of Contents4.1 ADJUSTMENTS4-14.1.1 Carriage Motor Backlash Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . .

LX-105O+ Service ManualAdjustments4.1 ADJUSTMENTSThis section describes the adjustment procedures necessary when the LX-105O+ printer isreassembled or

AdjustmentsLX-105O+ Service Manual4.1.2 Paper Feed Motor Backlash AdjustmentThis adjustment is required either when the paper feed motor is replaced o

LX-105O+ Service ManualAdjustments4.1.3 Platen Gap AdjustmentFollowing the removal of the carriage guide shaft or adjust lever, or if printing is abno

AdjustmentsLX-105O+ Service Manual8. insert the blade of a screwdriver into the countersink of carnage guide shaft.< Countersink>LargeSmall==\/’

LX-105O+ Service ManualAdjustments4.2 61-DIRECTIONAL PRINTING ALIGNMENT ADJUSTMENTThe bi-directional printing alignment adjustment is required when th

Chapter 5 TroubleshootingTable of Contents5.1 OVERVIEW5-15.2 SELF-DIAGNOSTIC FUNCTION5-25.3 TROUBLESHOOTING5-25.3.1 Troubleshooting of Abnormal Operat

LX-105O+ Service ManualTroubleshooting5.1 OVERVIEWTroubleshooting most other serial impact dot matrix printers is difficult to perform, since theremay

Chapter 1General DescriptionTable of Contents1.1 FEATURES1-11.2 SPECIFICATIONS1-31.2.11.2.21.2.31.2.41.2.51.2.61.2.71.2.81.2.9Printing Specifications.

TroubleshootingLX-1050+ Service Manual5.2 SELF-DIAGNOSTIC FUNCTIONThis section describes the selfdiagnostic function, in which the controller automati

LX-105O+ Servjce ManualTroubleshooting5.3 TROUBLESHOOTINGThis section describes the troubleshooting of abnormal operations and circuit board unit repa

TroubleshootingLX-105O+ Service ManualTable 5-5. The Printer does Not Operate at AllCauseStepThe TA-a filter unit maybe~dead.IThe TAMA board maybebe

LX-105O+ Service ManualTroubleshootingTable 5-8. Carriage Error DisplayedCauseStepCheckpointFindingSolutionCheck theTurn the printer off and try to mo

TroubleshootingLX-105O+ Service ManualTable 5-9. Paper is Not Fed (1)CauseStepCheckpointFindingSolutionThe paper end sensorDoes the sensor toggle?Repl

LX-105O+ Service ManualTroubleshootingTable 5-10. Paper is Not Fed (2)CauseThe paper end sensormay be dead.The release sensormay be dead.The paper fee

TroubleshootingLX-105O+ Service ManualTable 5-12. Abnormal Voltage DisplayedCauseStepCheckpointFindingThe CR motor, PFConnector CN5 and CN8motor or pr

LX-105O+ Service ManualTroubleshootingTable 5-16. Self-test Printout has Poor Quality (1)CauseStepCheckpointFindingSolutionThe printhead wire1Check th

TroubleshootingLX-105O+ Service ManualTable 5-17. Self-test Printout has Poor Quality (2)CauseStepCheckpointFindingSolutionPaper feed mechanism,Check

LX-105O+ Service ManualTroubleshootingTable 5-19. Abnormal Printing in On-line Mode (2)CauseStepCheckpointFindingSolutionSoftware setting may,Is it OK

List of TablesTable 1-1. Options for LX-105O+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Table 1-2. Print Speed and

TroubleshootingLX-105O+ Service Manual5.3.2 Unit Repair - TAMA Main Control BoardThis section describes the problems related to the main control board

LX-105O+ Service ManualTroubleshootingTable 5-21. Repair of the TAMA Board (Continued)Symptomrhe printerjoes not>perate at all.ConditionThe CPU isn

TroubleshootingLX-105O+ Service ManualTable 5-21. Repair of the TAMA Board (Continued)e..-- +A -Pfinr4itinnCauseCheck~ointSolution!5-14Rev. A

LX-105O+ Service ManualTroubleshootingTable 5-21. Repair of the TAMA Board (Continued)Rev. A5-15

Chapter 6MaintenanceTable of Contents6.1 MAINTENANCE6-16.1.1 Preventive Maintenance . . . . . . . . . .6.1.2 Lubrication and Adhesive Application. . .

LX-105O+ Service ManualMaintenance6.1 MAINTENANCEProper maintenance assures optimal and long-term printer perforrnance and minimizes theoccurrence of

MaintenanceLX-105O+ Service ManualTable 6-2. Lubrication PointsRef. No.Lubrication PointsLubricant(1)Contact portion of paper feed lever drive shaft a

LX-105O+ Service ManualMaintenanceFigure 6-2. Lubrication PointsRev. A6-3

AppendixTable of ContentsA.1 CONNECTOR SUMMARYA-1A.2 CIRCUIT DIAGRAMA-5A.3 CIRCUIT BOARD COMPONENT LAYOUTA-8A.4 EXPLODED DIAGRAMA-9Figure A-1.Figure A

LX-105O+ Service ManualAppendixA.1 CONNECTOR SUMMARYFigure below shows the intercomection between the major components of the LX-105O+.TAPNL-WContrgrr

LX-105O+ Service ManualGeneral Description1.1 FEATURESThe LX-105O+ is a small, light-weight, low-cost, advanced paper handling printer. Its main featu

AppendixLX-105O+ Service ManualTable A-1. Connector SummaryConnectorDescriptionPinsReferenceTAMA Main Control BoardI CN1 I Parallel interfaceI 36pin I

LX-105O+ Service ManualAppendixTable A-2. Connector Pin Assignment - CN2Pin No.1234567891011121314151617181920212223242526Signal NameERRPED7BUSYD6ACKD

AppendixLX-105O+ Service ManualTable A-5. Connector Pin Assignment - CN5Pin No.123456789101112Signal NameCRDCRBCRCDCOMCRABCOMCRCCRAPFDPFBPFCOMPFCOMPFC

LX-105O+ Sewice ManualAppendixACAINPUT, “’J)RI.O.lgFLED IGFigure A-3. TA-a Filter Unit Circuit DiagramE:Swl4SW23200QSW32SW4~40110$ GREENLED2GREEN8IoL

AppendixLX-105O+ Service ManualA.3 CIRCUIT BOARD COMPONENT LAYOUTczII II.-.-aFigure A-5. TAMA Main Control Board Component LayoutA-aRev. A

LX-105O+ Service ManualAppendixA.4 EXPLODED DIAGRAMFigure A-6. LX-105O+ Exploded DiagramNA—Rev. AA%

AppendixLX-105O+ Service ManualFigure A-7. Printer Mechanism Exploded DiagramA-10Rev. A

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