Epson FX-870/1170 Manuale Utente

FX-870/1170SERVICE MANUALIRevision LevelIEPSON®@Printed on Recycled Paper.

Printer FeaturesChapter 1Printer FeaturesOptions...

Disassembly and AssemblyArranging the CablesWhen you assemble the printer, arrange the cables as shown in Figure 4-22.El--Printer Mechanism(Bottom)WFi

Disassembly and AssemblyDisassembling the Tractor Unit1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tracto

Disassembly and AssemblyRemoving the C094 MAIN Board Assembly1.2.3.4.5.6.7.8.9.Remove the paper guide assembly, ribbon, top cover, front cover, paper

Disassembly and AssemblyRemoving the C076 PSB Board AssemblyNOTETo remove the C076 PSB board assembly for replacement, you must use a special extracto

Disassembly and AssemblyCBC (M3X8)CBB (M3X12)C076 PSB BoardFigure 4-27. Removing the C076 PSB Board AssemblyAssemblyEpson FX-870/11704-25

Adjustments, Maintenance, and LubricationChapter 5Adjustments, Maintenance, andLubricationAdjusting the Printer Mechanism...

Adjustments, Maintenance, and Lubrication5Adjusting the Printer MechanismThis section describes the various adjustments required to keep the printer m

Adjustments, Maintenance, and LubricationLeft Frame8ox Oriver -4/’Adjustment BushingFigure 5-2. Parallelism Acijustment Bushing9.Rotate the adjusting

Adjustments, Maintenance, and LubriitionBidirectional Alignment AdjustmentThis section describes how to adjust the bidirectional print position to ens

Adjustments, Maintenance, and LubricationAdjustment Operation1.2.3.4.5.6.7.-Turn on the printer’s power while pressing the PAUSE, PAPER FEED, and FONT

Printer FeaturesC094 MAIN Board Assembly (Main Control Board)... 1-29C094 PNL Board Assembly (Control Panel Circuit Board)...

Adjustments, Maintenance, and LubricationPreventive MaintenanceNo preventive maintenance is required other than occasionally vacuuming the printermech

Adjustments, Maintenance, and LubricationTable 5-2. Lubrication PointsRef. No.Lubrication Points Lubricant1Platen gap adjustment slots on the left fra

Principles of OperationChapter 6Principles of OperationPrinter Mechanism Operation...6-1

Principles of OperationFigure 6-8. Push-pull Tractor Operation Using theRear Paper Entrance...6-1

Principles of OperationTable 6-6.Carriage Motor Drive Modes... 6-27Table 6-7.Repairing the C076 PSB Board As

Principles of Operation6This chapter explains the mechanical and electrical operations of the FX-870/1170. At the end ofthe chapter, there are tables

Principles of Operation4. As soon as the current through the coil is switched off, the force induced in the coil rod stops.The plate then returns to i

Principles of OperationCarriage MechanismThe timing belt is connected to the lower side of the carriage.With the printhead installed, thecarriage move

Principles of OperationPlaten Gap AdjustmentThe platen gap (the gap between the platen and the printhead) can be adjusted to allow the printerto use p

Printer FeaturesTable 1-14. Optional Interface ...1-16Table 1-15. Identifying Errors Using

Principles of OperationPaper Handling MechanismsDuring normal operation, paper is fed to the printer, advanced to the specified position, and ejectedf

Principles of OperationPaper Advance Mechanisms--This section describes how the friction advance and tractor advance mechanisms work to advancethe pap

Principles of OperationPush Tractor MethodWhen the push tractor method is used with the rear entrance, the torque generated by the PF motoris transmit

Pthcipk of Operation-Paper (Continuous)Paper Tension RollerPaper TensionRoller Gear/Platen GearPF MotorP&h Tractor‘PushTractor GearFigure 6-6. Pus

Principles of OperationPull Tractor MethodThe pull tractor advances paper in basically the same way as the push tractor. The push tractoris installed

Principles of OperationPush-pull Tractor MethodThe push-pull tractor method is a combination of the push and pull tractor methods. Two tractorsare use

Principles of OperationIPaper Drive Roller\/ctor ReductionPF Motor PinionGearGear\PF MotorPaDer Advance Reduction Gearl .\l .- \’\Platen GearPaper Dri

Principles of OperationThe Release LeverThe release lever is used to select friction or tractor feeding or to release the paper.When the releaselever

Principles of OperationPaper PathsThis section describes the various paths the paper follows through the printer mechanism. Thesepaper paths are divid

Prlnclples of OperatbnRear EntranceFigures 6-13 and 6-14 show the paper paths for tractor feeding using the rear entrance.The rearentrance can be used

Printer Features 1The FX-870/1170 combines advanced firmware, reliability, and affordability in asingle light-weight unit. The major features of this

Principles of OperationPaper (Continuous)\PrintheadPaper Guide RollersFigure 6-15. Paper Path for Push-pull Tractor Feeding Using the Rear EntranceBot

Principles of OperationFront Entrance-Figures 6-17 through 6-20 show the paper paths for the front entrance. The front entrance can beused with any of

Principles of Operation-Paper (Continuous)Front PE Sensor\Lower Paper Guide RollerFigure 6-19. Paper Path for Pull Tractor Feeding Using the Front Ent

Principles of OperationRibbon Advance MechanismThe ribbon is held between the ribbon advance roller (ribbon driving gear) and the ribbon pressurerolle

Principles of OperationPower Supply OperationThe FX-870/1170 printer is powered by a 120 VAC power supply board (C076 PSB board assembly).This board o

Pfinciples of OperationThe +5 VDC voltage-overload protection circuit cuts the +5 VDC line output ifthe voltage exceeds+7 VDC. It stops the operation

aFilter CircuitAC inputPrinciples of OperationSecondary- IIIFull WavePectification - Smoothing - $M$ingSmoothingCircuitCircuit. .iICircuitII ,t+5vSwit

Principles of OperationControl Circuit OperationThe control circuit consists of two circuit boards: the CO94 MAIN (main control circuit board) andthe

Principles of OperationFigure 6-24 shows the data flow from the host computer to the printhead.Data sent fkom the hostcomputer is converted to image d

Principles of OperationTable 6-5 lists the fimctiona of the main componente of the CO94 MAIN.Table 6-5. Functions of Main Components of CO94 MAINIC or

Printer Features80-column model1-2136-column modelFigure 1-1. External View of the FX-870/1170Epson FX-870/1170

Principles of OperationReset CircuitThe control circuits are initialized when the RESET signal is issued. The reset operation occursunder these two co

Principles of OperationSensor CircuitsThe FX-8’70/1170 printer has the following sensors: CRHOME, PE (FRONT), PE (REAR), PG(platen gap), RELEASE LEVER

Principles of OperationCarriage Motor Drive CircuitThe carriage motor drive circuit controls the CR motor. An open loop, constant-current drivearrange

Principles of OperationPaper Feed Motor Drive CircuitThe PF motor, a stepping motor, advances the paper at a minimum advance rate of l/216 inch. Thism

Principles of OperationPrinthead Drive CircuitThe printhead drive circuit receives two types of signals: image data and the pulse length controlsignal

Principles of OperationE2PROM Control CircuitFigure 6-31 shows the E2PROM control circuit. The E2PROM is non-volatile memory containinginformation, su

Principles of OperationComponent Repair Information (for Dealers Outside the U.S.)This portion of the manual provides additional information for servi

Principles of OperationTable 6-7. Repairing the C076 PSB Board Assembly (Continued)ProblemcauseCheckpoint SolutionThe voltage of the Q3, ICl, PCl,Chec

Principles of OperationTable 6-7. Repairing the C076 PSB Board Assembly (Continued)ProblemCalIS@CheckpointSolutionhe +5 V line isThe +35 V line isChec

Principles of OperationRepairing the C094 MAIN Board Assembly-This section gives instructions for repairing the C094 MAIN board and describes various

Printer FeaturesoptionsC806371C806391C806381C806401C800201C800211C814001C814011C823051C823071C823101C823141C823151#8750#8755#8758#8310Single-bin cut-s

Principles of OperationTable 6-8. Repairing the C094 MAIN Board Assembly (Continued)Problem SymptomCauseCheckpointSolutionAbnormalThe CPUoperation at

Principles of OperationTable 6-8. Repairing the C094 MAIN Board Assembly (Continued)Problem Symptom CauseCheckpointSolutionSelf-testThe printer IC4 is

Principles of OperationTable 6-8. Repairing the C094 MAIN Board Assembly (Continued)ProblemSymptomCauseCheckpointSolutionPaper feed The printerICl isC

Reference MaterialsChapter 7Reference MaterialsConnector Summary...7-1Ci

Reference Materials 7Connector SummaryFigure 7-1 illustrates the interconnection of the primary components. Table 7-1 summarizesthe functions and size

Reference MaterialsTable 7-1. CO94 MAIN Board Connector SummaryBoardCO94 MAINBoard AssemblyConnectorCNlCN2CN3CN4CN5CN6CN7CN8CN9CN12CN13CN14FunctionHos

Reference MaterialsSee Table 1-14 for CNl (Centronics interface) signal functions and pin assignments.Table 7-2. CN2, Optional I/FTable 7-3. CN3, Fron

Reference MaterialsIW. l/O Signal NameFunction1- +5+5 VDC2 0 READY READY LED3.0 STAT STAT LED( Not equipped)4 0 FONT FONT LED5 0 COND ‘CONDENSED LED6

Reference MaterialsCircuit Diagrams0,‘B:,& OTC1132sE:IOKIA/I/II/IIIII ,,,,I Il/IIl/II I I I I I I ’IIHead Conrrol/IIm O,‘”Ill i- Pf Molar ControlC

Reference Materials.I\=------Figure 73. C094 MAIN Board AssemblyCircuit Diagram7-6Epson FX-87CY1170

Printer FeaturesDot matrix:9 x 7 matrix (high-speed draft)9 x 9 matrix (drafk)18 x 23 matrix (NLQ)Paper HandlingFeeding methods: Friction feed (front/

Surge Current ProtectIon2.5A,125VCNILIOO-12OVACC60I I0O.,u,‘AC250VFG,R4o.3gsR716K_iV Over ICBT220Op/lKV_ 3ZJIX1 : HEAT SINKI P*,051‘-9; FMP-G125t5V DC

CN2 PSCCB T’I PT-0’THIBohm/25CC60III4,0.1 u/ACZ%,VIt-=F-G,I-!, (L2)2200p/lKV_ 3’R5 =lOK/2wCl2 --01L70pRKVAGOI_ 2.CrCSl33ooun15ovC5233oou5ova_ C56-- 22

Reference MaterialsCNIGND*OPERA0SW4,*PAPER FEED t&-----h “’0*FONTrPAUSE/l-OFFCONDENSEDFONTSTATUSo7 *SW30o6ij-L SW205LED3N041/1 LED2NI2L/I LED1N41N

Reference MaterialsCircuit Board Component LayoutsPF Motore.mPF MotorParallelhlterface/CNlPG SensorccN5\EttCN7 -PE Rear/%i/PE FrontEYYI I \Printhead P

Reference MaterialsnEEmEPS-I IMODEL 1Figure 7-8. CO76 PSB Board Assembly Component LayoutEpson FX-870/11707-11

Reference Materials6 I.202lmalpJ z-fi L2DJclLLD Icl----,-I I I: :CO94 PNLSw2 ASSY 2006160 00 I Iq0FL+i16IA,--4SW4SW3SWICMK- 54x1 AmNote: The STATUS LE

Reference Mater&Outline DrawingsIr---I380 ’IIIIiIFigure 7-10. FX-870 Case Outline DrawingEpson FX-870/11707-13

Reference MaterialsILIr-r-=-IIr-01---z--Figure 7-11. F’X-1170 Case Outline Drawing7-14-Epson FX-870/1170

IndexSymbols+35 V 3-1, 6-19, 6-25, 6-28, 6-29line 6-31, 6-32monitor circuit 6-26detector 6-19+5 V 3-1, 3-4, 6-19, 6-25, 6-28line 6-33136-column 1-10,

Indexblinking 1-19bond paper 1-7bottom entrance 6-9, 6-15box driver 5-1BRASCII 1-21buffer 1-1, 1-13, 1-15, 1-17, 1-22, 1-24, 1-26, 6-24full printing 1

Printer FeaturesPrecautions for Handling PaperFriction feedl Set the release lever to the FRICTION position.l Load the paper from the front or top ent

Indexcommon 3-2, 3-3communications errors 3-7, 3-8component 1-28, 6-34layouts 7-10repair 6-31condensed 1-12, 1-17, 1-18, 1-19connector 1-14, 3-1, 3-3,

Indexdot 6-1wires 3-3double-space 3-7, 3-17draft 1-13, 1-18, 1-19,5-4drivecircuit 6-24, 6-27, 6-28,6-29roller assembly 5-6signals 6-1voltage 6-1driver

Indexfont 1-12, 1-17, 1-18, 1-19, 1-20, 1-21, 1-22, 5-4form feed 1-24frame 4-11ground connector 2-2left 4-11, 4-18right 4-11France 1-21frequency range

Indexpulse signal 6-36temperature 6-26thermistor 1-19,3-5heat 6-2sink 4-24,6-31hexdumps 1-23,3-21, 3-23codes 3-21 through 3-24highcapacity cut-sheet f

Indexitalic 1-21, 3-8Italy 1-21Llabels 1-4, 1-5, 1-6layout 1-29diagram 3-18, 7-10LEDs 1-19, 2-1left frame 4-11, 4-18length 1-6leveradjust 1-24, 3-2,4-

IndexNNLQ1-13, 1-18,1-19,5-4noise1-15,6-19non-volatile memory1-18, 1-20, 1-22, 1-23, 1-26, 6-30null modem cable 2-2Oohms 3-2, 3-3oil 5-5pad 5-6open 3-

Indextensionroller 6-6, 6-7gear 6-6unit 1-5,6-9thickness 1-25width 1-8parallel 1-34, 3-6cable 2-2interface 1-3, 1-13, 2-1, 6-29parallelism adjustment

Indexconsumption 1-11on 1-22, 3-6, 3-7, 3-9, 3-10, 6-34default settings 1-13, 1-22hours 1-11reset 6-25sequence 2-1outlet 2-1,6-31supply 1-28, 1-30, 3-

Index.gears 3-6, 5-6, 6-18READY 1-17, 1-19rearentrance 6-7, 6-10, 6-14feed 1-35frame 4-11paper guide 4-20PE sensor 1-24, 3-2, 3-20, 4-19, 6-13, 6-14,

Indexschematics 7-5 through 7-9screwdriver 4-1screws 4-3secondary circuit 2-1, 3-1, 4-1, 4-4, 6-20self-test 1-22, 2-1, 3-6, 6-36sensor 1-31, 3-1, 3-2,

Printer FeaturesPaper SpecificationsSee Tables 1-2, 1-3, 1-4, 1-5, 1-6, and 1-7.Normal Environmental ConditionsRecycled paper, envelopes, and labels r

IndexTtear-off 1-17, 1-18, 1-19, 1-20, 1-24, 1-27temperature 1-6, 1-7, 1-11, 2-1, 6-2, 6-26tension spring 4-12testpins 3-2points 3-1 through 3-4tests

Indexvoltage 1-19, 1-24, 3-1, 3-5, 3-6change 6-2detector 6-19drop protection circuit 6-20error 1-19, 1-27, 3-5input 6-19monitor circuit 6-26output 6-1

Printer FeaturesTable 1-4. Specifications for Continuous PaperWidthThicknessWeightQuality4- 10” (101-254 mm) 80-column4-l 6” (101-406 mm)136~column0.0

FCC Compliance StatementFor American UsersThis equipment has been tested and found to comply with limits for a Class B digital device pursuant to Part

Printer FeaturesTable 1-7. Specifications for Roll Paper-Size8.5 f 0.12” (216 A 3 mm)Thickness 0.0028-0.0035” (0.07-0.09 mm)Weight14-22 lb (45-70 kg)

Printer FeaturesContinuous papercc03000101-254mm(4-10"):80columns101-406mm(4-16"):136columns>*1>L+0000000GccWXYZ gJ0-000WXYZ gI000<

Printer FeaturesRoll paper (80-column model only)top insertion216 2 3 mm (8.5 2 0.12”)-Printable AreaWXYZtWXYZJFigure 1-5. Printable Area for Roll Pap

Printer FeaturesElectrical SpecificationsSee Table l-8.Table 1-8. Electrical Specifications for 120 V ModelRated voltage120 VACInput voltage range103.

Printer FeaturesSafety ApprovalsSafety standardsUL1950 with D3CSA!z2.2#220RF1 *FCC class BFirmware SpecificationsPrint ControlPrinting directionText m

Printer FeaturesTable 1-12. Print SpeedType of letters Print speed [cps]High-speed draft380(320)11421Draft pica285ii421Draft elite342[1701Condensed dr

Printer FeaturesBUSYIACKNLGDATA p. . . .. . . . . . . . . . . . -.-STROBE-t1 t1 t1t2 t3t,:0.5 p-s (minimum)t2:7 w (approximate)5:5 w (approximate)Figu

Printer FeaturesTable 1-13. Connector Pin Assignments andSignal Functions (Cont.)signal ReturnPinPinSignalNo. No.NameDir.Description1230 PEOut A HIGH

Printer Featuresshould be shielded and connected to the chassis of the host computer andthe printer, respectively.-4. All interface conditions are bas

Printer Features-Control PanelREADY,,OPL,,Figure 1-7. Control PanelButtonsOPERATE1 lock type buttonPAUSE/TEAR OFFPAPER FEEDI-(non-lock push-type butto

-Copyright NoticeAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form or by any

Printer FeaturesFONT (ALT)-Selects NLQ Roman, NLQ Sans serif, Draft, and condensed ofthose 3 fonts in rotation:(DraR +Draft cond. 3 Roman+Roman cond.

Printer FeaturesBin Selection for the Cut Sheet FeederlWhen there is no paper in the paper path:Holding down the FONT (ALT) button while pressing PAUS

Printer FeaturesDefault Settings-.You can set certain default parameters to be used at printer initialization.To changethe parameters shown in Table l

Printer FeaturesTo change the settings shown in Table 1-17, Group 2 Features (ESC/P mode), or inTable l-18, Group 2 Features (7BM mode), follow the st

Printer FeaturesTable l-18. Group 2 Features (IBM Mode)FONT COND. READYLEDLEDLEDOFFOFF ONOFFOFF BLINKSOFF ONOFFCharacter TableCharacter table PC437 (t

Printer Featuressheet feeder (CSF), the first sheet is used for scaling the sheet length. Then, themaximum number of printable lines is printed in the

Printer FeaturesPaper-out DetectionIf the paper-out sensor detects a paper out, the printer automatically enters a pausecondition after feeding or pri

Printer Featuresposition.If a paper out is detected before printing starts, the sheet is loadedautomatically to the top-of-form position, without PAPE

Printer FeaturesPrinter InitializationThe printer is initialized in the following cases.lWhen the printer is turned on.lWhen the INIT signal or CMREQ

Printer Features-.BuzzerThe buzzer beeps for 0.1 second at a time. These beep sounds are combined in variousways, as shown below, to indicate differen

PrecautionsPrecautionary notations throughout the text are categorized relative to 1) personal injury, and 2)damage to equipment.WARNINGSignals a prec

Printer FeaturesMain ComponentsThe components of the FX-870/1170 are designed for easy removal and replacementduring maintenance and repair. The main

Printer FeaturesC094 MAIN Board Assembly (Main Control Circuit Board)Basically, the same board layout is used in both the 136~column model and the 80-

Printer FeaturesC094 PNL Board Assembly (Control Panel Circuit Board)This boardis the control panel ofthe F’X-870/1170, consisting of a power button,

Printer FeaturesPrinter MechanismThe printer mechanism consists of a g-pin impact dot head, a carriage mechanism,a carriage motor, a paper feed mechan

Printer Feature8Housing AssemblyThe printer mechanism and all the boards are contained in a housing assembly thatconsists of the upper case and the lo

Printer FeaturesCommonly Asked Questions and AnswersThis section contains facts that customers often want to know about this printer.The question-and-

Printer Features7. Q.A.Do the FX-870 and FX-1170 use the same ribbons as the FX-850 andFX- 1050?Yes.8750 (fabric) for the FX-8708755 (fabric) for the

Printer Features13. Q.How many paper paths are there for the FX-870 and FX-1170?A.The printers have 4 paper paths:Top feedBottom feedRear feedFront fe

Installation and SetupChapter 2Installation and Setup ProceduresSite Requirements ...

Installation and Setup Procedures 2.This chapter provides tips to help you select a site, set up, and test the printer. There isinformation on the usi

How to Use this ManualThis manual contains the information that a service provider needs to support the EpsonFX-870/1170 printer.0It provides general

Installation and SetupRunning the Self-TestThe self-test checks the printer mechanically and electronically to make sure it worksproperly.If the print

Installation and SetupThe cable configuration for connecting the printer serially to a 25-pin (XT-type) computerconnector is shown in the figure below

Installation and SetupThen try sending a print screen again or type: DIR > PRN and press Enter at the MS-DOSprompt to print a listing of the curren

TroubleshootingChapter 3TroubleshootingTest Points ...3-1

Troubleshooting 3The information in this section can help you identify causes of printer problems and test theprinter to isolate the part that needs t

TroubleshootingTable 3-2. Sensor Test PointsSensorTest MethodConnector(Set Meter to Ohms.NumberCheck with Printer Power Off.)Release LeverPlace one le

Troubleshooting-Ho#80#I70#60#I50.#40#30#20#’0[TERMINAL ASSIGNMENT]Note:The printhead isupside down inthis illustration.[WIRE ASSIGNMENT]1Note: The com

TroubleshootingTable 3-5. Printhead Driver Test PointsTransistorTest MethodNumbers(Set Meter to Diodes. Check with Printer Power Off.)Meter ReadingQ2,

TroubleshootingError CodesTable 3-7. Error CodesError Warning ErrorCause3uzzer beeps:Carriage errorUse flowchart 2 in this chapter to isolatemoo.0the

TroubleshootingProblem IsolationMost printer problems can be corrected by replacing the defective unit. First, identify theproblem from the symptoms y

4 Disassembly/AssemblyThis chapter lists the tools you need and gives the recommended procedure for removingand replacing components.5 Adjustments, Ma

TroubleshootingTable 3-8. Symptoms and Flowchart References (Continued)FlowchartSymptomPossible Problemsor SolutionWhen I try to load paper, thel Ther

TroubleshootingTable 3-9. IdentiQing Serial Communications Errors (Continued)ProblemDevice timeouterrorPossible Causel The computer is not set forinf

TroubleshootingChart 1. Printer Dead at Power On0STARTNOIUse correct ACvoltage. (Nofluctuation fromAC range shownat left ispermitted.NoNoNoDower on,do

TroubleshootingChart 1. Printer Dead at Power On (Continued)Disconnectconnector CM1 2and power onprinter.Yesinitialize?R;g;y;N;haboard.Check motors an

TroubleshootingChart 2. Carriage Does Not Move or Moves Abnormallykcuro throntheCO94 U&INconnmtors.Manually wowtheCheck the gears.timing belt. and

TroubleshootingChart 3. Paper Does Not Feed or Feeds AbnormallynSTARTYOS/ \NoIR,TY*sNo /ilReplace PF motor. Ifmy coil Is shortrd.use Table 3-6 to Cast

TroubleshootingChart 4. Poor Print Quality in Self-Testand turning onthe prlntar.bo8rd connectedSrcurs theconnectors.Areany dots1q lsslng orQdrrgglng?

TroubleshootingChart 5. Ribbon Not Feeding ProperlySTARTQRap I ace theribbon mark.rlght and left,does ribbonSee Figure 6-21 (page 6-18).Check gearing

TroubleshootingChart 6. Data fhm Host is Printed Incorrectly-Run self-tart.(Turn on prlntor*hIlo holdingdown the PAPERFEED button. 1If self-tart Isg8r

TroubleshootingChart 7. Page Length/Margins IncorrectRun self-test and chSckthe printer’s drf8ultsettings 8gainst thesettings In your 8pplic8-tlon SOf

Handy Numbers for U.S. DealersEpson Customer Resource Center(800) 922-8911Epson Faxback System (310) 782-4214Epson Bulletin Board System(310) 782-4531

TroubleshootingChart 8. Printout Double-Spacedthe printer IsOK.At the MS-DOS prompt,type the following:NODE=LPTn:.6.Pand press Enter.(“n” is the port

TroubleshootingConnector LocationsThe layout diagram below shows the positions of connectors on the C094 MAIN board.‘R\\ /II’PE Rear’3-18Figure 3-2. C

TroubleshootingSensor LocationsThe illustrations below show the locations of sensors in the printer mechanism.Figure 3-3. Release SensorFigure 3-4. Ho

TroubleshootingPrinter MechanismFigure 3-5. Platen Gap SensorRear Paper Guide Assembly3-20Figure 3-6. Front and Rear PE SensorsEpson FX-870/1170

TroubleshootingHex Quick Reference Table for ESC/P CommandsUse the table below as an aid to read printer hex dumps. This table is for quick reference

TroubleshootingTable 3-10. Hex. Codes for ESC/P Commands (Continued)-Hex. Dec.ASCIICommand3D 61ESC = Set MSB to 03E 62ESC >Set MSB to 13F 63 ESC?sm

TroubleshootingHex Quick Reference Table for IBM CommandsUse the table below as an aid to read printer hex dumps.This table is for quick reference onl

TroubleshootingTable 3-11. Hex. Codes for IBM Commands (Continued)-IHex. Dec.ASCIICommandI4E 784F 7950 8051 8152 8253 8354 a455 a557 a758 aa59 895A 90

Disassembly and AssemblyChapter 4Disassembly and AssemblyPrecautions...

Disassembly and AssemblyFigure 4-12. Removing the PF Motor Assembly...4-13Figure 4-13. Disassembling the PF Gear Train..

Contents-ContentsChapter 1Printer FeaturesOptions...1-3Hardware Specific

Disassembly and Assembly 4-This section provides information you need to know to disassemble or assemble the printer.PrecautionsRead the precautions b

Disassembly and AssemblyService Checks After RepairBefore you send the printer back to the customer,fill in the checklist in Table 4-3to notethe curre

Disassembly and AssemblyScrew SpecificationsThis chapter uses abbreviations for small parts, such as screws and washers. Tables 4-4 and45 list these a

Disassembly and AssemblyNotes for Unit Removal and InstallationThis section describes the procedures for disassembling and assembling the main compone

Disassembly and AssemblyItems to Remove Before Disassembling the Printer1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject

Disassembly and AssemblyRemoving the Panel Unit-1.Remove the paper guide assembly, ribbon, top cover, f?ont cover, paper eject cover and tractorunit.

Disassembly and AssemblyRemoving the Printhead1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractorunit.

Disassembly and AssemblyRemoving the Upper Housing Assembly1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and t

Disassembly and AssemblyRemoving the Printer Mechanism1.2.3.4.5.6.7.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover

Disassembly and AssemblyRemoving the Platen Assembly-_1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover and tractor

ContentsChapter 4Disassembly and AssemblyPrecautions...4-1To

Disassembly and AssemblyRemoving the Rear Frame Assembly1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and trac

Disassembly and AssemblyRemoving the CR Motor Assembly1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tracto

Disassembly and AssembtyRemoving the PF Motor Assembly-1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tract

Disassembly and AssemblyDisassembling the PF Gear Train1.Remove the paper guide assembly, top cover, front cover, paper eject cover, and tractor unit.

Disassembly and AssemblyRemoving the Carriage Assembly1.2.3.4.5.6.7.8.9.10.Remove the paper guide assembly, ribbon, top cover, front cover, paper ejec

Disassembly and AssemblyAssembly Note‘-When attaching the timing belt to the carriage assembly, secure the timing belt using the1eR and right clips of

Disassembly and AssemblyRemoving the Ribbon Drive (RD) Assembly1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, a

Disassembly and AssemblyRemoving the Home Position (HP) Sensor-1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, a

Disassembly and AssemblyRemoving the Front and Rear Paper End (PE) Sensors1.Remove the paper guide assembly, ribbon, top cover, front cover, paper eje

Disassembly and AssemblyRemoving the Release Sensor1.2.3.4.5.6.7.Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, a