Epson C82378 Manuel de service

HTTP://BBS.FIXCLUB.COM.CN LQ - 300 + / LQ-305K24 Pins Serial Impact Dot Matrix PrinterSEDM00006®SERVICE MANUAL

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 51.2 SPECIFICATIONS1.2.1 Physical SpecificationWithout Pull Tra

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Component Layout 95C294PSB BOARDFigure 7-4. Component Layout-C294PSBC294PSE BOARDFigure 7-5

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Component Layout 96C294PNL BOARDFigure 7-6. Component Layout-C294PNL

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Electric Circuit Schematics 977.5 Electric Circuit SchematicsThe following pages show circu

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HTTP://BBS.FIXCLUB.COM.CN中华维修网 www.91xiu.com 中华维修论坛 www.91xiubbs.com中华维修网 www.91xiu.com 中华维修论坛 www.91xiubbs.com

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 61.2.2 Printing SpecificationPrint method: Impact dot matrixNum

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 7Character tables:Standard version (13 character table)Italic ta

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 8Character tables and typefaces:Character table Bitmap font Scala

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 91.2.3 Paper FeedingFeeding method: Friction feed (rear)Push tra

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 101.2.4 Electrical Specification120 V versionRated voltage: AC

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description SPECIFICATIONS 11Yellow approx. 0.5 million characters (Draft 10 cpi, 48 dots/ch

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description INTERFACE 121.3 INTERFACELQ-300+ provides bi-directional 8-bit parallel interfac

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description INTERFACE 13BUSY signal is active (HIGH level) under the conditions below:In th

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description INTERFACE 141.3.2 Parallel Interface (Reverse Channel)Transmission mode: IEEE-1

HTTP://BBS.FIXCLUB.COM.CNNotice All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any fo

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description INTERFACE 15NOTE: In/Out shows the direction of signal flow from the printer’s p

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description INTERFACE 161.3.4 Interface SelectionThe printer has 2 interfaces; the parallel

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description OPERATOR CONTROLS 171.4 OPERATOR CONTROLS1.4.1 Operation Switches4 switches and

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description OPERATOR CONTROLS 18Operation in default setting modeThe following switches are

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description OPERATOR CONTROLS 191.4.2 Panel Functions1.4.2.1 Usual OperationPause-This swi

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description OPERATOR CONTROLS 205. Select setting value with the LF/FF button.Tear Off/ Bin L

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description OPERATOR CONTROLS 211.4.2.4 Bi-d. AdjustmentBi-d. adjustment can be performed by

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description Control codes 221.5 Control codesControl codes = ESC/P21.6 InitializationPowe

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description PAPER 231.7 PAPER1.7.1 PAPER SPECIFICATIONSCut sheet (single sheet, not multi

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description PAPER 24EnvelopeContinuous paper (Single sheet and Multipart)Table 1-4. Envelo

HTTP://BBS.FIXCLUB.COM.CNPRECAUTIONSPrecautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipme

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description PAPER 25LabelsFigure 1-6. Printable Area-LabelRoll paperTable 1-6. Continuous

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description PAPER 261.7.2 Printable AreaCut sheetsFigure 1-7. Printable Area for Cut Sheet

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description PAPER 27Envelop Figure 1-8. Printable Area for EnvelopContinuous paperFigure 1

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description Accessories 28Roll paperFigure 1-10. Printable Area for Roll Paper1.8 Accessor

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description Difference between LQ-300+ and LQ-305K 291.9 Difference between LQ-300+ and LQ-3

HTTP://BBS.FIXCLUB.COM.CNCHAPTER2OPERATING PRINCIPLES

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Overview 312.1 OverviewLQ-300+ consists of the printer mechanism and electric c

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 322.2 Printer MechanismThe following is main components of th

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 332.2.1 PrintheadThe table below shows the printhead specific

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 342.2.2 Carriage MechanismThe following is the components of

HTTP://BBS.FIXCLUB.COM.CNAbout This ManualThis manual describes basic functions, theory of electrical and mechanical operations, maintenance and repai

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 35 The following table shows the various carriage speed modes.

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 36CARRIAGE HOME POSITION (HP) DETECTORThe table below is the H

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 37Figure 2-4. Color Ribbon Driving MechanismRIBBON CARTRIDGE

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 38COLOR MECHANISM INITIALIZATIONThe printer mechanism initiali

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 392.2.5 Paper Feed MechanismThis mechanism consists of paper

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 40RPE DETECTORRPE detector is installed on the paper path at t

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Printer Mechanism 412.2.6 Release MechanismThis mechanism switches the flow of

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Electric Circuit Operating Principles 422.3 Electric Circuit Operating Principl

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision COperating Principles Electric Circuit Operating Principles 432.3.2 C294PSB / C294PSE BoardLQ-300+ ge

HTTP://BBS.FIXCLUB.COM.CNCHAPTER3TROUBLESHOOTING

HTTP://BBS.FIXCLUB.COM.CNRevision StatusRevision Issued Date DescriptionA January 25, 2001 First ReleaseB February 15, 2001Revision:• page -34 Table 2

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Overview 453.1 OverviewThis chapter describes how to troubleshoot problems when any

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 463.2 Troubleshooting3.2.1 Initialization CheckBefore troubleshooti

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 473.2.3 Identify Problems From SymptomsThis section contains procedu

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 48Table 3-5. When Power is Applied, the Printer Becomes Fatal Error.

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 493.2.4 Unit and Parts CheckThis section describes the checking meth

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 503.2.4.1 Printhead CheckBy measuring the direct current resistance

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 513.2.4.2 Motor CheckBy measuring the direct current resistance of t

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CTroubleshooting Troubleshooting 523.2.4.4 Printhead Driver CheckSimple check of the printer driver (

HTTP://BBS.FIXCLUB.COM.CNCHAPTER4DISASSEMBLY AND ASSEMBLY

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Overview 544.1 OverviewThis chapter explains the disassembly and assembly o

HTTP://BBS.FIXCLUB.COM.CNContentsChapter 1 Product Description 1.1 Features ...

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Overview 554.1.3 Service Checks After RepairBefore returning the printer ba

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 564.2 Disassembly and AssemblyThis section explain

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 574.2.1 Printhead Removal1. Remove the cover and t

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 584.2.2 Upper Housing Removal1. Remove platen knob

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 594.2.3 Printer Mechanism Removal1. Remove the upp

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 604.2.4 Board Assembly and Panel Removal1. Remove

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 61Figure 4-6. C395MAIN Board Assembly Removal4.2.6

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 624.2.7 Printer Mechanism DisassemblyThis section

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 634.2.7.2 Platen Removal1. Remove the printer mech

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 644.2.7.3 Carriage Unit Removal1. Remove the print

HTTP://BBS.FIXCLUB.COM.CN 3.1 Overview ... 45 3.2 Troubl

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 65Figure 4-14. Hook at the PG Adjust Lever7. Remov

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 664.2.7.5 RPE Sensor Removal1. Remove the printer

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 674.2.7.8 PG Sensor Removal1. Remove the printer m

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 684.2.7.10 PF Motor Assembly Removal1. Remove the

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 695. Remove the combination gear, 8.5, 25.2 from th

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CDisassembly and Assembly Disassembly and Assembly 704.2.7.12 Paper Guide Removal1. Remove the printe

HTTP://BBS.FIXCLUB.COM.CNCHAPTER5ADJUSTMENT

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAdjustment Overview 725.1 OverviewThis chapter explains the adjustment required after disassembling

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAdjustment Overview 735.1.2 Bi-D AdjustmentBi-D adjustment is required at the following cases.Main

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAdjustment Overview 749. The destination setting menu appears. Referring to the table below and using

HTTP://BBS.FIXCLUB.COM.CNCHAPTER1PRODUCT DESCRIPTION

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAdjustment Overview 7510. The following screen appears. By using ↑ or ↓ key to shift “>” mark, sel

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAdjustment Overview 7613. Four rows of Bi-D pattern will be printed as follows. If four lines are not

HTTP://BBS.FIXCLUB.COM.CNCHAPTER6MAINTENANCE

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CMaintenance Maintenance 786.1 MaintenanceAppropriate maintenance is necessary to keep the printer in

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CMaintenance Maintenance 79Figure 6-1. Left Frame AssemblyFigure 6-2. Teeth of Gears at the Left Fra

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CMaintenance Maintenance 80Figure 6-5. PF Roller AssemblyFigure 6-6. Paper Guide AssemblyFigure 6-7.

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CMaintenance Maintenance 81Figure 6-9. CarriageFigure 6-10. CR Motor AssemblyFigure 6-11. Combinati

HTTP://BBS.FIXCLUB.COM.CNCHAPTER7APPENDIX

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Connector Summary 837.1 Connector SummaryThe figure below illustrates how the primary compo

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Connector Summary 84Table 7-4. CN5-Release SensorPin I/O Signal Name Function1 I RELEASE Re

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CProduct Description Features 41.1 FeaturesEPSON LQ-300+ is a 24-pin serial impact dot matrix printer

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Connector Summary 85Table 7-10. CN11-PF MotorPin I/O Signal Name Function1 O PFA Paper feed

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Connector Summary 8615 HD13 Head data 1316 HD1 Head data 117 HD5 Head data 5Table 7-13. CN1

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Parts List 877.2 Parts ListThe following table shows parts name of this product. Refer to t

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Parts List 88516 PULLEY ASSY.,DRIVEN517 HARNESS,HP518 C.P.B SCREW519 MOTOR ASSY.,PF520 PAPER

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Parts List 89590 LEVER,RELEASE592 SHEET,CABLE,CR650 PRINTHEAD,DH24-0U0651 LABEL,WARNINGTable

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Exploded Diagrams 907.3 Exploded DiagramsExploded diagrams of LQ-300+ are shown on the fol

HTTP://BBS.FIXCLUB.COM.CN LQ-300+ No.01 Rev.01 103025704511271271031291291

HTTP://BBS.FIXCLUB.COM.CN580 LQ-300+ No.02 Rev.01 1030258157350456057550

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Component Layout 937.4 Component LayoutThis section provides component layouts.C395MAIN BO

HTTP://BBS.FIXCLUB.COM.CNEPSON LQ-300+ Revision CAppendix Component Layout 94C395MAIN BOARD-SOLDERED SIDEFigure 7-3. Component Layout-C395MAIN (Solde