Epson SQ-870 Specifications

EPSON TERMINAL PRINTERSQ - 870/11704001225REV.-A

REV.-ATable 1-2. Optional Units1ModelDescriptionsII C80647/ Single-bin cut-sheet feeder (80 columns]IC80648Single-bin cut-sheet feeder (136 columns)C

REV.-A3.2.7 Printer Mechanism DisassemblyThis section describes how to disassemble the printer mechanism.WARNINGWhen working with the printer mechanis

REV.-A3.2.7.2 Disassembly of CAP ASSY.[Step 1] Remove the housing. (Refer to section 3.2. 1.)[Step2] Remove the printer mechanism. (Refer to section 3

REV.-A3.2.7.3 Disassembly of PUMP ASSY. and CLEANER ASSY.[Step 1][Step 2][Step 3][Step 4][Step 5][Step 6]Remove the housing. (Refer to section 3.2.

REV.-A3.2.7.4 FRAME, FRONT Removal[Step 1] Remove the housing. (Refer to section 3.2. 1.)[Step2] Remove the printer mechanism. (Refer to section 3.2.4

REV.-A3.2.7.5 Carriage Motor (DC MOTOR, CR) Removal[Step 1] Remove the housing. (Refer to section 3.2.1.)[Step 2][Step 3][Step 4][Step 5][Step 6][Step

REV.-A3.2.7.6 Disassembly of Carriage[Step 1][Step 2][Step 3][Step 4][Step 5][Step 6][Step 7][Step 8]Remove the housing. (Refer to section 3.2. 1.)Rem

REV.-A~ ‘ss’”6” ‘“’N’sWhen engaging the timing belt to the carriage, make sure that 3 grooves can be seen at the endof the belt as shown in Figure 3-

REV.-A3.2.7.7 STEPPING MOTOR, PF Removal[Step 1] Remove the housing. (Refer to section 3.2. 1.)[Step2] Remove the printer mechanism. (Refer to section

REV.-A3.2.7.9 Disassembly of PLATEN ASSY.[Step 1] Remove the housing. (Refer to section 3.2.1.)[Step 2] Remove the printer mechanism. (Refer to secti

REV.-A[Step 12] Rotate the HOLDER, PLATEN, RIGHT and HOLDER, PLATEN, LEFT which fasten the PLATENASSY. to the frame, LEFT/RIGHT, and remove the PLATEN

REV.-A1.2 SPECIFICATIONSThis section provides specifications for the SQ-870/l 170 printer.1.2.1 Hardware SpecificationsPrinting method On-demand type

REV.-AIREQUIRED ADJUSTMENT ITEMSIf you have reassembled the carriage, make the following adjustment in the specified sequence.(1) Timing belt tension

REV.-A3.2.7.10 Disassembly of PAPER GUIDEIStepl] Remove thehousing. (Refer to section 3.2.1.)[Step2] Remove the printer mechanism. (Refer to section

REV.-AASSEMBLY POINTSWhen attaching the FRAME ASSY., RIGHT to the PAPER GUIDE, make sure the SHAFT, RELEASE of@the PAPER GUIDE, RIGHT is set in the pr

REV.-A3.2.7.11 Disassembly of FRAME ASSY., RIGHT[Step 1][Step 2][Step 3][Step 4][Step 5][Step 6][Step 7][Step 8][Step 9][Step 10][Step 1 1][Step 12]

REV.-AASSEMBLY POINTSWhen attaching the release lever to the FRAME ASSY., RIGHT, make sure that all the teeth of the@gap gear are fully engaged with

3.2.7.12 Disassembly of TRACTOR ASSY.[Step 1] Remove the TRACTOR GEARS (left/right) attached on the SHAFT, TR, DRIVE, and remove theFRAME, TR, (left/

REV.-ACHAPTER 4ADJUSTMENTS4.1 PLATEN GAP PARALLELISM ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.2 PLATEN GAP ADJUSTME

REV.-AThis chapter describes the various adjustments you should make after you disassemble or replace anyparts or components that require adjustment.

REV.-A[Step 4] Adjust the LEVER, PARALLEL, ADJUST so that the long needle of the dial gauge indicatesa constant value at any point on the platen with

REV.-A[Step2] Insert the thickness gauge (exclusively made by EPSON) between the platen and theprinthead, and rotate the SHAFT, CR, MAIN so that the h

REV.-A3. Push-pull tractor feed (release lever in REAR PUSH POSITION or FRONT PUSH POSITION).● The paper must be loaded from the front or rear entran

REV.-A4.3 TIMING BELT TENSION ADJUSTMENTThis adjustment is to change the tension of the timing belt to a proper level. If this adjustment is notperfor

REV.-A4.4 PRINTHEAD DRIVE VOLTAGE ADJUSTMENTPrinthead drive voltage of each printhead should be adjusted individually, because all printheads arenot e

Table 4-1. Head Drive Voltage and Jumper SettingHead Drive Voltage (V)Jumper 5 Setting Jumper 6 Setting122.2- 123.7Ax120.7- 122.1Y118.8- 120.6z117.1 -

[Step4][Step5][Step6][Step7][Step8][Step9][Step 10][Step 11][Step 12][Step 13]REV.-AWhen only the MAIN board is replaced:Set the jumpers (5 and 6) on

REV.-A4.5 PRINT ADJUSTMENTThe print adjustment can be divided into the printhead inclination adjustment and print positionadjustment. These adjustmen

REV.-A[Step 1 1] Center the carriage and loosen the screw (fastening the printhead)on the righthand side. Then,holding the head with the hand, turn th

REV.-A[Step 6] When “’80 COLUMN...1, 136 COLUMN...2° is displayed, select 80 column or 136 columnfor your machine.●[Step 7] When “BI-D...1, HEAD TILT.

REV.-ACHAPTER 5TROUBLESHOOTING5.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 OVERVIEWThe task of troubleshooting is not an easy job,REV.-Aeven a single trouble may exhibit a variety ofsymptoms.Figure 5-1 show aflowchart,by

REV.-AIn order to check the waveforms of the MAIN board, you can use the extension cable provided for thisprinter. You can remove the MAIN board fr

REV.-ATable 1-5. EnveIo~es[SizeThicknessWeightQualityNo. 6 166 mm X 92 mm (6.5 in. X 3.625 in.)No. 10240 mm X 104 mm (9.5 in. X 4.125 in.)0.16 mm to

REV.-A5.2 REPAIR BY UNIT REPLACEMENTWhen a problem occurs, you can separate a particular unit that is responsible for the particular problemby referri

REV.-A(1) Printer fails to operate at time of power on.Use the correct inputvoltage.YesReplace the fuse andpull out CN4 on theMAIN board.NoCheck the o

(2) Error is detected.~Read the errormessage displayed(Refer to table 5-2)YesCheck the cableconnection on thecontrol panel.Connect the cableYesTurn of

‘r’esReplace the HOLDERASSY., INK CARTRIDGE.YesWasted ink drain tankoverflow.I57Replace the wasted inkdrain tankNDYReplace theMAIN board.N5-6

(3) Print failure occurs~Set the adjust leverin the correct positionand execute self-test.during self test.INoNoIconnected correctly ?<. .dot is mi

REV.-A(4) Paper is not fed normally.anfirm that there are nostray pieces of paper oranything else nothingabnormal within the paperthe paper path. Remo

REV.-A(5) Control panel does not function normally.NoYesConnect the controlpanel cable correctly,No4Replace thecontrol panel.F7NDNoYesReplace the MAIN

REV.-A(6) The printer does not functionnormally in on-line mode.TExecute self-test.Refer to other sedonfor troubleshooting.Check the setup valuesbetwe

REV.-A5.3 REPAIR OF POWER SUPPLY BOARDThis section describes the problems related to the power supply board. The table below provides varioussymptoms,

REV.-ATable 5-5. Repair of Power Supply Board (Cont.)Symptom Conditon Cause Checkpoint SolutionThe printer+5V line is+35V lineCheck the +35V line.does

REV.-APrintable areaSee figures 1-5 and 1-6182-257mm ~.2-10.lind?) : 60cdm=k~13.5rnm (0.53-inti) or more0● 1: 80 columns: 3.0 mm (0.12 in.) or more w

REV.-A5.4 REPAIR OF MAIN BOARDThis section describes the problems related to the MAIN board. The table below provides varioussymptoms, likely causes,

REV.-ASymptom I ConditonThe printerThe CPUdoes not oP-does notcrate at ail.operate.Tmhln K-G Rcmair nf Main Board (Cont.). ““. ” - -...-~-..-. . . .

Table 5-6. Repair of the Main Board (Cont.)SymptomThe carriagedoes not op-eratenormally.ConditonThe carriagedoes not op-erate at all.CauseIC 10 isdefe

REV.-AT=hlta RR Ransir nf the Main Board (Cont.), ““. ” w w. .. -~.-.. -. . . . ... ----- — --- -, -— ...,5-16

Table 5-6. Repair of the Main Board (Cont.)Symptom ConditonCauseCheckpointSolutionThe topTE motorICI 2 is Check the output signal at pin 21, 22, 23

REV.-A5.5 REPAIR OF THE PRINTERTroubles related to the printer mechanismprocedures in Table 5-7.MECHANISMshould be repaired according to the troublesh

REV.-ATable 5-7. ReDair of Printer Mechanism [Cont.}.––– — —– –-–-- .— --- . — — . . . . .SymptomCondition CauseCheckpointSolutionThe carriage does T

REV.-ATable 5-7. Re~air of Printer Mechanism (Cont.)SymptomConditionCauseCheckpointSolutionAbnormal printing.A particular dot is Front of the print-Pe

Table 5-7. Repair of Printer Mechanism (Cont.)SymptomCondition Cause CheckpointSolutionPaper is not fed Top edge holding The TE motor isMeasure the co

c“)

REV.-AInk cartridgeType:Exclusive ink cartridgeColor: BlackInk capacity:105 to 115 ccPrint capacity (depending on the cleaning operation):Draft:6 mill

REV.-ACHAPTER 6MAINTENANCE6.1 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REV.-A6.1 PREVENTIVE MAINTENANCEPreventive maintenance includes regular cleaning of the case exterior (using denatured alcohol), as wellas occasional

REV.-ATable 6-2. Lubrication Points (Refer to Figure 6-2 to Figure 6-3)Ref. No.Lubrication Points Lubricant(1)Sliding surface of the LEVER, RELEASE,

REV.-AFigure 6-2. Lubrication Points (1)6-3

REV.-A(-,.“L..]Figure 6-3. Lubrication Points (2)6-4

REV.-AAPPENDIXA.1A.2A.3A.4A.5CONNECTOR SUMMARY...,CIRCUIT DIAGRAMS . . . . . . . . . . .

REV.-ALIST OF TABLESTable A-1.Table A-2.Table A-3.Table A-4.Table A-5.Table A-6.Table A-7.Table A-8.Table A-9.Table A-10.Table A-1 1.Table A-12.Table

REV.-AA.1 CONNECTOR SUMMARYFigure A-1 illustrates the interconnection of the primary components. Table A-1 summarizes thefunctions and sizes of the co

REV.-ATable A-1. Board Connector SummarvBoardConnactorFunctionPinsC076 MAIN boardCN 1Parallel interface36CN2Optional interface card36CN3Identity or

Table A-2. CN2 (C076 MAIN)REV.-ATable A-3. CN3(C076 MAIN) (Cont.)No.1/0Signal Name Function1- +5+ 5 VDC2- +5+ 5 VDC3- +5+ 5 VDC4 - +5+ 5 VDC5- +5+5 V

REV.-ADielectric strength220/240Rated voltageversionInput voltage rangeRated frequency rangeInput frequency rangeRated currentPower consumptionInsulat

REV.-ANo.1234567891011Table A-4. CN4(C076 MAIN)Signal Name+5+5GNDGNDGNDGPGPGP+35+35NCFunction+5 VDC+5 VDCSignal groundSignal groundSignal groundPower

REV.-ATable A-17. CN17 (C076 MAIN)No.1/0 Signal Name Function10HD2Head data 220HD4Head data 430HD6Head data 640HD8Head data 850HD 10Head data 1060HD

53co-—Re~tifierFigure A-4. C076 PSB Board CircuitA-9

44 .4IJ1I+4+b.4+b4*!s”——:v5(sw-0vFigure A-5. C076 PSB Board CircuitA-10

1L1III.1>z447=r-J’1uuu~!LIll,Rectifier IFigureA-6. C076 PSE Board CircuitA-1 1—-FilterDiagram

111,*1.NaIIr,c1. ,..Lk.+FigureA-7. C076 PSE Boerd Circuit DiagramA-1 2(-’J

.—-----+11 I1ILI1—\Figure A-8. Control Panel Board Circuit DiagramA-1 3

REV.-AA.3 CIRCUIT BOARD COMPONENT LAYOUTla-— .,. ..-J ‘– —...,”,mu?:,sla1—JuEic’. .~ ,’. ..:.KxFigure A-9. C076 MAIN Board Component Layout (Surface)

REV.-AC301-JnCIWRlC7am.Ec1clo3ud“aR70n.Figure A-10. C076 MAIN Board Component Layout (Back Side)A-1 5

REV.-AII II +- – - L-J CM +, I ‘1 .s2.- Nilw(nL21==-r’:=’os’ II l’%*:“ ‘ lu~JSI* 10 I IA*–iic*n I.P5ZI /m-8“;A.’iu bmn-wa I.,. , , , , ● , , , , ,1

REV.-A1.2.2 FirmwareControl codePrinting directionInput data bufferCharacter codeCharacter tablesBit-map fontsScalable fontsSpecificationsES C/PTMleve

REV.-AII ILR16wCN III--IIICN321r!II++IE“ k-’&-,,E ich ,S.Assy. 2004225 00 #CHK-S4XlFigure A-1 2. C076 PSE Board Component LayoutA-1 7

REV.-ATable A-21. Part No. Reference TableRef. No.1001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291302003003

REV.-ATable A-21. Part No. Reference Table (Cent)Ref. No.572573574575576577581582585586587588589590591592593594595596597599600601602603604605606607608

REV.-AA.5 CASE OUTLINE DRAWING—,IIhI1rHI IwI!J325 mmI—r-=T$?3. .,Figure A-19. SQ-870 Case Outline DrawingA-26

REV.-A1“ I -----1I1----1III ( ! ,1(yK$“.1(1,I1,-111..J/’325 mm&Figure A-20. SQ-1 170 Case Outline DrawingA-27

EPSONSEIKO EPSON CORPORATIONPRINTER DIVISIONEPSON OVERSEAS MARKETING LOCATIONSEPSON AMERICA, INC. EPSON DEUTSCHLAND GmbH20770 Madrona AvenueZulpicher

EPSONPrinted in Japan92.02 -.7-G

REV.-APrinting speedSee Tables 1-8 and 1-9.Printing columnsSee Table 1-8.Character matrixSee Table 1-10.Character sizeSee Table 1-10.Table 1-8. Printi

REV.-ATable 1-9. Printing (Bit Image Mode)DotAdjacent256 X n2 + nlPrintingPinsmDensityDotSpeed(DPI)Printing80 Columns136 Columns(IPS)8060Yes480 816551

oNOTICE“ All rights reserved. Reproduction of any part of this manual in any fromwhatsoever without SEIKO EPSON’s express written permission is forbid

REV.-ATable 1-10. Character Matrix and Character Size,Printing ModeFace MatrixHOD Character SizeUnit ESC sp*; Draft, 10 pitch15 x 441802.1 x 3.1120Dra

REV.-A(Normal character)1~23Ascender area4567Rk.Fk/T//y//s///s.:.c:39EcE4041.(aO)(a2).46Descender area4748LLCharacter width (CW)417181:...45464748

REV.-A1.3 INTERFACE OVERVIEWThe printer has a parallel interface with the1.3.1 Parallel Interfacespecifications described below.Specifications for the

Table 1-11. Connector Pin Assignments and Signal Functions (Cont.)PinSignal NameReturn Dir.Functional DescriptionNo.Pin No.14AUTOFEED-XT--INIf LOW wh

REV.-A1.4 CONTROL PANELOn the controlpanel are: 10 non-lock type buttons, and 24 indicators.k——ILom I -!. I 0 111—Figure 1-10. Control PanelBUTTONS(1)

REV.-A(8) PITCH ButtonPushing this switch once selects the character pitch. And holding this button down selects the followingones in sequence. PITCH

REV.-A1.5 DIP SWITCHES AND JUMPER SETTINGThis section describes the DIP switch selections and jumper setting for the SQ-870/l 170 printer.1.5.1 DIP Sw

REV.-ATable 1-14. international Character Set Selection1-11-21-3CountryPcON ON ONUs.437ONONOFFFrance850ONOFFONGermany860ON OFF OFF U.K.863OFF ON ONDen

REV.-A1.6 OPERATING INSTRUCTIONSThis section describes the self-test and hexadecimal dump functions as well as the error states, printerinitialization

REV.-A● Cover openThe printer lid is opened.● Fatal errorsIn the following cases, the printer recognizes them as fatal errors and enters the fatal e

REV.-APRECAUTIONSPrecautionary notations throughout the text are categorized relative to 1 ) personal injury, and 2) damageto equipment:DANGER Signals

REV.-A(2) Software initializationInput of the ESC C2 command also initialize the printer. Printer initialization by ESC C? code does notperform functi

REV.-AWhen the paper is at the top-of-form position, the loading position is adjustable by using the ‘MICROFEED’ function. In the ‘MICRO FEED’ functio

REV.-A1.6.11To keepPrinthead Protectionthe print quality, several kindsof printhead cleaning functions are performed automatically.(1) Power on clean

REV.-A1.7 MAIN COMPONENTSThe main components of the SQ-870/l 170 printer are designed for easy removal and replacementto facilitate maintenance and re

REV.-A1.7.1 C076 MAIN Board (Main Control CircuitThe C076 MAIN board is the main board in the printer,mechanism driver circuit.The KPD70325 (location:

REV.-A1.7.2 Control PanelThe Control Panel is, which includes the indicator LEDs, switches, and DIP switches.Figure 1-14. Control Panal1.7.3 C076 PSB

REV.-A1.7.4 Printer Mechanism (M-4710/4760)The M-47 10/4760 printer mechanism was developed specifically for SQ-870/l 170 printer. Includedthe compo

REV.-A2.12.22.3CHAPTER 2OPERATION PRINCIPLESOPERATING PRINCIPLES OF PRINTER MECHANISM...2-12.1.1.Printhead Mechanism ...

REV.-ALIST OF FIGURESFigure 2-1. Block Diagram of Printer Mechanism -Model-47 10/4760. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REV.-AFigure 2-35.Figure 2-36.Figure 2-37.Figure 2-38.Figure 2-39.Figure 3-40.Figure 2-41.Figure 2-42.Figure 2-43.Figure 2-44.Figure 2-45.Figure 2-46.

REV.-APREFACEThis manual describes functions, theory of electrical and mechanicaloperations, maintenance, and repair of the SQ-870/l 170.The instructi

REV.-A2.1 OPERATING PRINCIPLES OF PRINTER MECHANISMThis section describes functions and operations of the printer mechanism - Model-47 10/4760.Modei-4

REV.-A2.1.1 Printhead MechanismThe printhead of this printer employs the on-demand method, where part of the ink stored in the reservoirwithin the p

REV.-A< Printing >This section describes how ink is injected through the nozzles.(1) Normal condition ---Piezoelectric Element is electrically

REV.-A2.1.2 Carriage MechanismThe timing belt attached to the base of the carriage is driven by the carriage motor and the pulley. Thismakes the carri

< Adjustment of Platen Gap >REV.-AThe platen gap must be adjusted with the head adjust lever (LEVER, GAP, ADJUST) depending on thethickness of p

REV.-A2.1.3 Paper Feed MechanismThe paper feeding method for this printer is divided into the friction feed method and the tractor feedmethod. The tra

Push Tractor MethodIn this method, continuousof tractor. When the paperREV.-Apaper is engaged to the tractor by mating the holes of paper to the pinsf

REV.-APush-Pull Tractor MethodThis method is a combination of the above-mentioned push tractor method and the pull tractor method.The push tractor pus

REV.-AWhen the release lever is shifted as described above, the arrangement of the gears is changedaccordingly to enable various types of paper feedin

REV.-A2.1.3.3 Paper Insertion entranceThe foIlowing few pages describe the paper feeding method in relation to the paper feeding insertion.Top Entranc

@REVISION SHEETREVISON DATE ISSUED CHANGE DOCUMENTAFeb. 21, 19921st issueLe,:.;-. ,..,,.-v-

REV.-APaperPaper Tension RollerPrintheadRear PE Sensor-Figure 2-18. Rear Entrance - Push-Pull Tractor MethodFront EntranceThe front entrance is used i

REV.-A/-PaperPaper Tension Roller \PrintheadFront PE SensorFigure 2-20. Front Entrance - Push Tractor MethodPaper,Paper Tesion RollerAPull Tractor\x-

REV.-A2.1.3.4 Top Edge Holder Mechanism OperationThis mechanism is provided to minimize unprintable area at the top edge of paper. The top edge ofpap

REV.-A2.1.4 Ink MechanismThe ink mechanism consists of the following parts.c:..~. ,’.,, ,...,Ink cartridge (Ink cartridge holder, Ink end sensor, Ink

2.1.4.1 Pump MotorThe pump motor drivesthrough several gears.REV.-Athe pump, cleaner blade, rubbing blade, and carriage lock lever (set/reset)Pump Mot

REV.-A2.1.4.2 Pump MechanismThe pump draws ink from the nozzles of the printhead and sends it to the wasted ink drain tank. Thisoperation is performed

REV.-A2.1.4.3 Cap MechanismThis mechanism is provided to prevent the nozzles from drying or forming bubbles while they are notused. In this mode, wh

REV.-A2.1.4.4 Cleaning Mechanism and Carriage Lock MechanismThe cleaning operation consists of rubbing operation and cleaner blade operation. (The rub

REV.-AThe pad and blade is attached to the cleaner lever. When the pump motor rotates clockwise, the spurgear (20) is rotated and thus sets the lever

REV.-A2.1.4.5 ink Cartridge and Ink End Sensor MechanismThe structure of the ink cartridge is shown in Figure 2-32.The ink cartridge contains an ink

REV.-ATABLE OF CONTENTSCHAPTER 1.GENERAL DESCRIPTIONCHAPTER 2.OPERATING PRINCIPLESCHAPTER 3. DISASSEMBLY AND ASSEMBLYCHAPTER 4. ADJUSTMENTSCHAPTER 5.

REV.-A2.1.4.6 Wasted Ink Drain TankUsed ink is collected into the wasted ink drain tank. The wasted ink drain tank has the absorber to collectused ink

REV.-A2.1.4.7 Operational Sequence of Ink MechanismInk Mechanism comprises of various steps of operation.The following are some of the basic steps of

REV.-AThe basic steps of operation described above are combined in many ways to meet various conditionsof the printer as described below.(1) Power ON

REV.-Aa) CL1 (Normal cleaning)This operation consists ofcleaner blade operation-2.b) CL2 (Intensive cleaning)the cleaner blade operation-1, negative p

REV.-Aa) Initial charge operation-1This operation is performed when the printhead is not capped at the time the user operates the initialcharge operat

REV.-A(6) Wasted ink drain tank replacement operationIn normal use condition, this tank has a sufficient capacity to collect all the ink to be wasted

REV.-A2.2 OPERATING PRINCIPLES OF POWER SUPPLY CIRCUITRYThe power supply circuitry of this printer is provided with either C076PSB board (120V) or C

REV.-A2)3)+35 VDC over voltage protection circuitWhen the voltage of the +35 VDC line exceeds a certain value (+36V), the switching circuit is turnedo

REV.-A2.3 OPERATING PRINCIPLES OF CONTROL CIRCUITRYThis section describes the operating principles of the control circuitry of this printer - C076 M

REV.-ATable 2-6 lists the functions of major elements on the C076 MAIN board.Table 2-6. Major Elements on C076 MAIN Board and Their FunctionsrElement

REV1.11.21.31.41.51.61.7CHAPTER 1GENERAL DESCRIPTIONFEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REV.-A2.3.2 Reset CircuitWhen the power in turned on, the reset IC(MB3771 ), which monitors the + 5 VDC line, keeps outputtingRESET signals until +5 V

REV.-A2.3.4 Paper Feed Motor Drive CircuitA stepping motor is used in the paper feed motor drive circuit of this printer.The motor is driven by 2-2 ph

REV.-A2.3.5 Carriage Motor Drive CircuitThis printer uses a DC motor for the carriage drive. To drive the DC motor at a constant speed, the gatearr

REV.-A2.3.6 Printhead Drive CircuitFigure 2-43 shows the printhead drive circuit.The print data developed by CPU is transferred to the head control

REV.-A(1) Charge/discharge circuitFigure 2-44 shows the chargeidischarge circuit,VHAR35~MnchageCHGoAAAQ3DCHALDCHGHI-48DSCHGyPDl 6322 (IC8, 9)RsoGo-0-

REV.-AFigure2-47showsthe timingfor discharge/charge pulse.Figure 247. Timing for Discharge/Charge(2) Printhead Voltage Supply CircuitPulseThe viscosit

REV.-A2.3.8 TE Motor Drive CircuitA stepping motor is used to drive the TE motor. The phase data for the stepping motor is transmittedfrom the port

REV.-A2.3.10 EEPROM Control CircuitThis printer is provided with an EEPROM to store the data such as panel settings, paper position data(Paper cut p

REV.-ACHAPTER 3DISASSEMBLY AND ASSEMBLY3.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REV.-ALIST OF FIGURESFigure 3-1. How to Make a False Ink Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2Figure 3-2. Relea

REV.-ALIST OF FIGURESFigure 1-1.Exterior View of the SQ-1 170. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-

REV.-AFigure 3-36.Figure 3-37.Figure 3-38.Figure 3-39.Table 3-1.Table 3-2.Table 3-3.Table 3-4.Table 3-5.Table 3-6.Table 3-7.Table 3-8.Disassembly of F

REV.-A3.1 OVERVIEWThis section describes the various points to note when disassembling, assembling and transporting theprinter.3.1.1 Precautions for D

REV.-ASince this printer employs the ink mechanism, it requires special handling as follows.(1) Ink handling before/after repairThe ink path of the in

< Filling preservation liquid>If it seems to take more than a week before the user receives thepreservation liquid. You can fill the liquid in t

REV.-A(2) Wasted Ink Drain TankThis printer is provided with the wasted ink drain tank, which is designed to have a sufficient capacity@to collect the

REV.-A(3) TransportationMake sure the following preparations are properly made before delivering the printer.● Capping● Removing ink cartridge● Sett

REV.-AThe procedures (1) (2) (3) described above are listed in Table 3-2. (Also refer to Table 3-7)Table 3-2. Service Process●ProcedureDescription Car

REV.-A3.1.2 TOOISTable 3-3 and 3-4 list the recommended tools and instruments used for disassembling/assembling,adjusting, or measuring purposes. Be

REV.-A< Screw designation>Ail small parts, such as screws andwashers, are indicatedby abbreviations.Table 3-5. Abbreviations List of Small Parts

REV.-A3.1.3 Service Check ListAfter servicing, be sure to check the printer for any abnormality using the following list.Table 3-7. Service Check Lis

REV.-A1.1 FEATURESThe SQ-870/l 170 is a high speed 48-nozzle ink jet printer which provides advanced paper handlingthat is upper compatible with the

REV.-A3.2 DISASSEMBLY AND ASSEMBLYeThis chapter describes procedures for disassembling main components of this printer. Unless otherwisespecified, the

REV.-A3.2.1 Housing RemovalThis paragraph describes the procedures for removing the HOUSINGS, FRONT and UPPER.[Step 1][Step 2][Step 3][Step 4][Step 5]

REV.-A[Step 6][Step 7]Disconnect the connector that connects the interlock switch to the resistor at the rear of theprinter mechanism.Raise the front

REV.-AASSEMBLY POINTSWhen assemble the printhead, follow the procedures shown below.[Step 1][Step 2][Step 3][Step 4][Step 5][Step 6][Step 7]Verify tha

REV.-AREQUIRED ADJUSTMENT ITEMSIf you have disassembled/assembled the printhead, make the following adjustment after repair.● Printhead slant adju

REV.-A3.2.4 Printer Mechanism RemovalThis section describes how to remove the printer mechanism.WARNINGWhen working with the printer mechanism, take s

REV.-A[Step7][Step8]Disconnect the following connectors, which connect the printer mechanism to the MAIN board;CN 13 (Blue/6 pins), CN 14 (White/6 pin

REV.-AREQUIRED ADJUSTMENT ITEMSF-If you have replaced the printer mechanism, make the following adjustment in the specified sequence.(1) Prlnthead dri

REV.-AASSEMBLY POINTSa● If you have replaced the MAIN board, take the weight of the wasted ink drain ink tank and replaceit if the weight exceeds 240g

REV.-A3.2.6 HOLDER ASSY., INK CARTRIDGE Removal[Step 1] Remove the housing. (Refer to section 3.2.1.)[Step2] Remove the printer mechanism. (Refer to