Epson Stylus Color 400 Service Manual Page 1

EPSONCOLOR INK-JET PRINTEREPSON Stylus Color 400SERVICE MANUALSEIKO EPSON CORPORATION4007366

EPSON Stylus Color 400 Service ManualRev. A1-3Feeding methodFriction feed with ASFPaper feed resolution0.035mm(1/720 inch)Line spacing1/6 inch or prog

EPSON Stylus Color 400 Service ManualRev. A4-64.2.2.3 VH Voltage Writing OperationThere are dispersion in the PZT which are used for print head. It i

Chapter4 AdjustmentRev. A4-74.2.2.4 Print Head Angle AdjustmentThe dispersion of print head and carriage that is the base of installing the print hea

EPSON Stylus Color 400 Service ManualRev. A4-89. Loosen a screw securing the print head on the carriage.(It is not necessary to remove it completely:

Chapter4 AdjustmentRev. A4-94.2.2.5 Bi-D AdjustmentThis adjustment is to correct dispersion of printing positions caused by slippage of printing timin

EPSON Stylus Color 400 Service ManualRev. A4-10[Screen 1][Screen-2][Screen-3][Screen-4][Screen-5][Screen-6]

Chapter 5Troubleshooting 5.1 Troubleshooting...5-1 5.

EPSON Stylus Color 400 Service ManualRev. A5-15.1 TroubleshootingThe printer may exhibit different symptoms for the same problem, which makes troubles

Chapter 5 Troubleshooting Rev.A5-2Error statusIndicatorsRecoveryPower Ink Out(Black)Ink Out(Color)Paper OutPaper Out --- --- --- On Load paper by pr

EPSON Stylus Color 400 Service ManualRev. A5-35.2 Unit Level TroubleshootingWhen a problem occurs, you can identify the defective unit according to t

Chapter 5 Troubleshooting Rev.A5-45.2.1 Printer does not operate at power on Is AC power voltage normal?YESIs the fuse(F1) of power supplyI

Chapter1 Product DescriptionRev. A1-41.2.2 Paper SpecificationThis section describes the printable area and types of paper that can be used in this pr

EPSON Stylus Color 400 Service ManualRev. A5-55.2.2 Error is detectedSTARTCheck the errormessage.(Refer to Table5-3)Is it carriage error?No ink c

Chapter 5 Troubleshooting Rev.A5-65.2.3 Failure occurs during printingSTARTIs printingcarried out O.K?Is printing qualitynormal?Is theproblemsol

EPSON Stylus Color 400 Service ManualRev. A5-75.2.4 Printer does not feed the paper correctlySTARTArepapers setin the ASFcorrectly?Doesthe PF rollera

Chapter 5 Troubleshooting Rev.A5-85.2.5 Control panel operation is abnormalSTARTIs the control panelconnected correctly?Connect thecontrol panelcor

EPSON Stylus Color 400 Service ManualRev. A5-95.3 Unit Repair C206 PSB/PSE BoardThis section describes the problems related to the power supply board

Chapter 5 Troubleshooting Rev.A5-10Table 5-6. C206PSB Power Supply Board (Continued)Symptom Condition Cause Checkpoint Solution+5V line isdead.IC51

EPSON Stylus Color 400 Service ManualRev. A5-115.3.1 Unit Repair - C206 MAIN BoardThis section describes the problems related to the main controller

Chapter 5 Troubleshooting Rev.A5-12Symptom Condition Cause Checkpoint SolutionPrinting isabnormal.Printing is notexecute.IC7 is dead. Check the trap

EPSON Stylus Color 400 Service ManualRev. A5-135.4 Repair of the Printer MechanismThis section provides instruction for repairing the printer mechani

Chapter 5 Troubleshooting Rev.A5-14Symptom Condition Cause Check-point SolutionAbnormal printing Only a particular dotcauses abnormalprinting.Print

EPSON Stylus Color 400 Service ManualRev. A1-51.2.3 Adjust Lever Settings (PG adjust lever)The adjust lever located on the right side(blue) under the

EPSON Stylus Color 400 Service ManualRev. A5-15Symptom Condition Causes Checkpoint SolutionAbnormal paperfeeding.Paper is not fed. Friction of the PFr

Chapter 6Maintenance 6.1 OVERVIEW ...6-1 6.1.

Chapter 6 MaintenanceRev. A6-16.1 OVERVIEWThis section describes the points and the procedures for maintaining the printer in its optimum condition.6.

EPSON Stylus Color 400 Service ManualRev. A6-26.1.3 LubricationThe type and amount of oil and grease used on this printer are determined based on the

Chapter 6 MaintenanceRev. A6-3Table 6-3. Lubrication Points (Continued)No. Standard Remarks5 <Lubrication Point>The shaft for “GEAR, 16, 40.8” a

EPSON Stylus Color 400 Service ManualRev. A6-4No. Standard Remarks11 <Lubrication Point>A round hole of the left frame of ASF(“GEAR, 34” is inse

Chapter 6 MaintenanceRev. A6-5No.1No.210mm2mm2mmNo.3No.11"GEAR, 34"

EPSON Stylus Color 400 Service ManualRev. A6-6No.5No.4No.4No.4"GEAR, 23.2""GEAR, 16, 40.8""GEAR, 67.2""COMBINATION

Chapter 6 MaintenanceRev. A6-7No.8"HOLDER, PULLEY, DRIVEN"No.9No.10"HOPPER, ASSEMBLY""FRAME, ASF"

Appendix A.1 Connector Summary... A-1 A.2 Connector Summary...

Chapter1 Product DescriptionRev. A1-61.2.4 Printing Area[Cut Sheet]Following tables show printable areas at Character mode and Raster Graphics mode.P

EPSON Stylus Color400 Service ManualRev.AA-1A.1 Connector SummaryStylus Color 400 has the following primary component units; Main Board(C206 Main) Pow

AppendixRev. AA-2A.2 Connector SummaryFollowing tables show connector pin assignment of the C206 MAIN board.Connector Function Table to referCN1 Paral

EPSON Stylus Color400 Service ManualRev.AA-3Pin Signal Name I/O Function1 PFA Out Phase drive signal (A)2 PF-A Out Phase drive signal (-A)3 PFB Out Ph

AppendixRev. AA-4A.3 EEPROM Address MapAddress Explanation Setting QPITSettingsFactorySettings00H Password 0 54H -01H 0FH -02H Market 0:Word

EPSON Stylus Color400 Service ManualRev.AA-5Address Explanation Setting QPITsettingsFactorysettings23H Interface wait time 0 to 255 (by second) 0AH 0A

AppendixRev. AA-6Address Explanation Settings QPITsettingsFactorysettigs44H Ink Counter Cb(total)1count=100(ng)00H 00H45H 00H 00H46H 00H 00H47H 00H 00

EPSON Stylus Color400 Service ManualRev.AA-7Address Explanation Setting QPITsettingsFactorysettings72H customized model name string of counter 00H 00H

AppendixRev. AA-8A.4 Circuit Board Component LayoutsFigure A-2. C206 Main Board Component Layout

EPSON Stylus Color400 Service ManualRev.AA-9Figure A-3. C206 PSB Board Component Layout

AppendixRev. AA-10Figure A-4. C206 PSE Board Component Layout

EPSON Stylus Color 400 Service ManualRev. A1-7[Envelope]The table and figure below show the printable area for envelopes.Paper size LM(Left margin)(mi

EPSON Stylus Color400 Service ManualRev.AA-11Figure A-5. C206 PNL Component Layout

AppendixRev. AA-12A.5 Exploded DiagramsFigure A-6.Stylus Color 400 Exploded Diagram (1)

EPSON Stylus Color400 Service ManualRev.AA-13Figure A-7. Stylus Color 400 Exploded Diagram (2)

AppendixRev. AA-14Figure A-8. Stylus Color 400 Exploded Diagram (3)

EPSON OVERSEAS MARKETING LOCATIONSEPSON AMERICA, Inc.20770 Madrona Avenue,P.O. Box 2842Torrance, CA 90509-2842Phone: (800)922-8911Fax: (310)782-5220EP

EPSONSEIKO EPSON CORPORATION

Chapter1 Product DescriptionRev. A1-81.2.5 Environmental ConditionTemperatureOperating :10 to 35 °C (Refer to the figure below for condition)Non-opera

EPSON Stylus Color 400 Service ManualRev. A1-91.2.6 Ink Cartridge Specifications[Black Ink Cartridge]Item SpecificationsType Exclusive cartridgeColor

Chapter1 Product DescriptionRev. A1-10[Color Ink Cartridge]Item SpecificationsType Exclusive cartridgeColor Magenta, Cyan, YellowPrint capacity 320 pa

EPSON Stylus Color 400 Service ManualRev. A1-111.2.7 Physical Specification[Dimension]: 429mm(W) x 234mm(D) x 162mm(H): 429mm(W) x 695mm(D) x 309mm(H)

Chapter1 Product DescriptionRev. A1-121.2.9 Electric Specification[120V version][Rated voltage] : AC120V[Input voltage range] : AC103.5∼132V[Rated fre

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

EPSON Stylus Color 400 Service ManualRev. A1-131.2.12 Acoustic Noise[Level] : Approx.45 dB(A) (According to ISO 7779)1.2.13 CE Marking[220-240V versi

Chapter1 Product DescriptionRev. A1-14ColorPrinting color : ESC r, ESC(rEEPROM controlEEPROM control : ESC 

EPSON Stylus Color 400 Service ManualRev. A1-151.3 InterfaceThis printer provides parallel interface as standard.1.3.1 Parallel Interface (Forward Ch

Chapter1 Product DescriptionRev. A1-161.3.2 Parallel Interface (Reverse Channel)[Transmission mode]: IEEE-1284 nibble mode[Synchronization]: Refer to

EPSON Stylus Color 400 Service ManualRev. A1-17Following lists “Notes” when using Parallel Interface.Note1) “Return GND pin” in the table means twist

Chapter1 Product DescriptionRev. A1-18[Signal level: TTL compatible (IEEE-1284 level 1 device)]Parameter Minimum Maximum ConditionVOH* --- 5.5VVOL* -0

EPSON Stylus Color 400 Service ManualRev. A1-191.4 Control PanelSince Stylus Color 400 does not require many buttons since printer driver can start va

Chapter1 Product DescriptionRev. A1-201.4.2 Panel Functions< Panel Functions >Switch FunctionLoad/Eject(Pushing within 2 seconds*) Loads or Eje

EPSON Stylus Color 400 Service ManualRev. A1-21[Maintenance Error Reset Procedure]You can reset the maintenance error by pressing the cleaning switch

Chapter1 Product DescriptionRev. A1-221.4.3 Printer Condition and Panel StatusThe table below shows printer condition and panel status. Since this ta

PRECAUTIONSPrecautionary notations throughout the text are categorized relative to 1) personal injury and 2)damage to equipment.WARNINGSignals a preca

EPSON Stylus Color 400 Service ManualRev. A1-231.5 Error StatusWhen following status occur, the printer goes to the error status and stops taking data

Chapter1 Product DescriptionRev. A1-241.5.4 No Ink-CartridgeFollowing reasons can be the causes when printer goes this error mode.1) When the printe

EPSON Stylus Color 400 Service ManualRev. A1-25 1.6 Printer InitializationStylus Color 400 has three kinds of initialization methods. Following explai

Chapter1 Product DescriptionRev. A1-261.8 Main ComponentsStylus Color 400 has following major units. Also, it is one of the major characteristics that

EPSON Stylus Color 400 Service ManualRev. A1-271.8.3 C206 PSB/PSE Power Supply BoardIn the electric boards for Stylus Color 400, switching regulator

Chapter 2Operating Principles 2.1 OVERVIEW ...

Chapter2 Operating PrinciplesRev.A2-12.1 OVERVIEWThis section describes Printer Mechanism, electric circuit board (C206 PSB/PSE, C206 Main, C206PNLb

EPSON Stylus Color 400 Service ManualRev.A2-2As major printer mechanisms in the figure 2-1, there are four major mechanisms as they are listed below.1

Chapter2 Operating PrinciplesRev.A2-32.1.1.1.1 Printing ProcessFollowing figures indicate the sectional drawing of normal state and ejecting state o

EPSON Stylus Color 400 Service ManualRev.A2-42.1.1.1.2 Printing MethodThis section explains printing method of actual printing such as printing text a

PREFACEThis manual describes functions, theory of electrical and mechanical operations, maintenance, andrepair of EPSON Stylus Color 400.The instructi

Chapter2 Operating PrinciplesRev.A2-5Note2)Two groups which are divided according to each elements will be divided either even dot orodd dot when pa

EPSON Stylus Color 400 Service ManualRev.A2-6The difference between Full-Overlap Micro-Weave and Part line Overlap Micro-Weave are following;Full-Over

Chapter2 Operating PrinciplesRev.A2-72.1.1.2 Carriage MechanismCarriage mechanism is to drive the carriage with print head mounted from left to righ

EPSON Stylus Color 400 Service ManualRev.A2-8The table below shows W1-2 phase drive sequence at each steps when the rotor of carriage motormakes one r

Chapter2 Operating PrinciplesRev.A2-9The figure below shows the carriage mechanism. The print head as a core of the printing mechanism isstored in t

EPSON Stylus Color 400 Service ManualRev.A2-102.1.1.2.1 Paper Gap Adjust MechanismThis mechanism can be set by the users and can prevent various prob

Chapter2 Operating PrinciplesRev.A2-112.1.1.3 Paper Feed Mechanism and Pump MechanismMechanisms that send the paper in the hopper to inside the pri

EPSON Stylus Color 400 Service ManualRev.A2-12 Papers on the ASF (auto-sheet-feeder) supplied by the user are carried to the printer inside by paper p

Chapter2 Operating PrinciplesRev.A2-13In the paper pick up mechanism of Stylus Color 400, same mechanism as Stylus Color IIs/820are applied. This m

EPSON Stylus Color 400 Service ManualRev.A2-142.1.1.4 Ink SystemInk system mechanism consists of 1)cap mechanism, 2)pump mechanism, 3)carriage lockmec

REVISION SHEETRevision Issued Data ContentsRev. A February18. 1997 First issue

Chapter2 Operating PrinciplesRev.A2-152.1.1.4.1 Pump MechanismIn the Stylus Color 400, there is no switch or mechanism to change over the pump/paper

EPSON Stylus Color 400 Service ManualRev.A2-16The table below shows PF/Pump motor rotational direction and pump system operation.Table 2-11. Relations

Chapter2 Operating PrinciplesRev.A2-172.1.1.4.2 Cap MechanismIn the cap mechanism, in order to prevent ink from being thickened on the head surface,

EPSON Stylus Color 400 Service ManualRev.A2-182.2 Electrical Circuit Operating PrinciplesStylus Color 400 contains the following four electric circui

Chapter2 Operating PrinciplesRev.A2-192.2.1 C206 PSB/PSE Power Supply BoardC206 PSB/PSE board is a power supply board with a RCC switching regulato

EPSON Stylus Color 400 Service ManualRev.A2-20The C206 PSB/PSE board has various control circuits to stop output if malfunction on the power supplyboa

Chapter2 Operating PrinciplesRev.A2-212.2.2 C206 MAIN BoardVarious DC voltage generated on the C206 PSB/PSE board is added various signals in order

EPSON Stylus Color 400 Service ManualRev.A2-22Timer Data: The timer IC that uses lithium battery as power source monitors how longthe power is off. Wh

Chapter2 Operating PrinciplesRev.A2-232.2.2.1 Reset CircuitsThe reset circuit prevents the CPU from running away, which is caused by the unstable vo

EPSON Stylus Color 400 Service ManualRev.A2-242.2.2.2 Sensor CircuitsThe following sensor circuits are mounted in the Stylus Color 400 and selects app

TABLE OF CONTENTSCHAPTER 1. GENERAL DESCRIPTIONCHAPTER 2. OPERATING PRINCIPLESCHAPTER 3. DISASSEMBLY AND ASSEMBLYCHAPTER 4. ADJUSTMENTCHAPTER 5. TROU

Chapter2 Operating PrinciplesRev.A2-252.2.2.3 EEPROM Control CircuitsThe EEPROM of Stylus Color 400 has following contents. Gate array E05B44(IC2)

EPSON Stylus Color 400 Service ManualRev.A2-262.2.2.4 Timer CircuitThe lithium battery is mounted on the C206 main board and calculates how long the p

Chapter2 Operating PrinciplesRev.A2-272.2.2.6 Print Head Control CircuitThe print head control circuit of Stylus Color 400 has following characteri

EPSON Stylus Color 400 Service ManualRev.A2-28[Nozzle Selector Drive Circuit]In order to motivate the print head to carry out printing, it is necessar

Chapter2 Operating PrinciplesRev.A2-29After the data transmission by the nozzle selector(IR2C72C) is completed and a certain time passes,trapezoidal

EPSON Stylus Color 400 Service ManualRev.A2-302.2.2.7 PF (Pump) Motor Drive CircuitIC15(LB1845) is used for driving PF(Pump) motor. In the IC, Bi-pol

Chapter2 Operating PrinciplesRev.A2-312.2.2.8 CR Motor Drive CircuitIn the CR motor, the same LB1845(IC15) as the PF motor has is used. In the IC,

Chapter 3Disassembly and Assembly 3.1 OVERVIEW ...

Chapter3 Disassembly and AssemblyRev. A3-13.1 OVERVIEWThis section describes procedures for disassembling the main components of EPSON Stylus Color 4

EPSON Stylus Color 400 Service ManualRev. A3-2When assembling, if ink cartridge is removed and needs to be installed again, make sure to install new

Chapter 1Product Descriptions 1.1 Features...

Chapter3 Disassembly and AssemblyRev. A3-33.1.4 Service Checks After RepairBefore returning the printer after service, use the check list in Table 3

EPSON Stylus Color 400 Service ManualRev. A3-43.2 Disassembly ProceduresThe figure below shows procedures for disassembly.Remove the Housing3.2.1Remov

Chapter3 Disassembly and AssemblyRev. A3-53.2.1 Removing the HousingSince the printer mechanism itself structures the bottom part, the printer mecha

EPSON Stylus Color 400 Service ManualRev. A3-63.2.2 Removing the Board AssemblySince the main board(C206 Main) and power supply circuit board(C206 PS

Chapter3 Disassembly and AssemblyRev. A3-7M/B Shield platePower Supply Board(C206 PSB)Main Board(C206 Main)(No.6)(No.1)(No.1)Figure 3-4. Removing the

EPSON Stylus Color 400 Service ManualRev. A3-83.2.3 Removing the Operation Panel1. Remove the housing. (Refer to 3.2.1)2. Remove two screws (No.1) s

Chapter3 Disassembly and AssemblyRev. A3-93.2.4 Disassembling the Printer MechanismSince Stylus Color 400 does not have the lower housing, the print

EPSON Stylus Color 400 Service ManualRev. A3-10FFCFastener HeadPrint Head UnitFigure 3-6.Removing the Print HeadPrint HeadCarriage AssemblyMake sure t

Chapter3 Disassembly and AssemblyRev. A3-113.2.4.2 Removing the Absorber Tray Assembly ;A1. Remove the housing. (Refer to 3.2.1)2. Remove the operat

EPSON Stylus Color 400 Service ManualRev. A3-123.2.4.3 Removing the Pump Assembly and Cap Assembly1. Remove the housing .(Refer to 3.2.1)2. Remove th

EPSON Stylus Color 400 Service ManualRev. A1-11.1 FeaturesStylus Color 400 is designed for PC users at home and low price for that high performance.Al

Chapter3 Disassembly and AssemblyRev. A3-13Loosen screws on the rightand left sides and float thePaper eject frame assembly.Release three hooksfrom t

EPSON Stylus Color 400 Service ManualRev. A3-143.2.4.4 Removing the CR Motor Assembly1. Remove the housing. (Refer to 3.2.1)2. Rotate the gear 67.2 t

Chapter3 Disassembly and AssemblyRev. A3-15(No.1)Make sure that protrusions of CR frame are in the holes of the frame when installing the CR motor as

EPSON Stylus Color 400 Service ManualRev. A3-163.2.4.5 Removing the PF Motor Assembly1. Remove the housing.(Refer to 3.2.1)2. Remove the absorber tra

Chapter3 Disassembly and AssemblyRev. A3-17PF Motor(Back side of the frame)Direction of pullingthe motor lead cable.Set the pinion axis of PF motorto

EPSON Stylus Color 400 Service ManualRev. A3-183.2.4.6 Removing the ASF Assembly1. Remove the housing. (Refer to 3.2.1)2. Release the fixed hook from

Chapter3 Disassembly and AssemblyRev. A3-193.2.4.6.1 Removing the Paper Feed Roller Assembly1. Remove the ASF assembly. (Refer to 3.2.4.6)2. Remove

EPSON Stylus Color 400 Service ManualRev. A3-203.2.4.6.2 Removing the Right and Left LD Roller Assembly1. Disassemble the ASF assembly and remove the

Chapter3 Disassembly and AssemblyRev. A3-213.2.4.7 Removing the Carriage Assembly1. Remove the housing. (Refer to 3.2.1)2. Loose the timing belt by

EPSON Stylus Color 400 Service ManualRev. A3-22PG Support LeverRight Parallelism Adjustment BushWasher[Convex side should faceto the bush side, during

Chapter1 Product DescriptionRev. A1-21.2 SpecificationsThis section describes each specification for Stylus Color 400; 1) Printing specification, 2) P

Chapter3 Disassembly and AssemblyRev. A3-233.2.4.8 Removing the PF Roller Assembly1. Remove the housing.(Refer to 3.2.1)2. Remove the carriage assem

EPSON Stylus Color 400 Service ManualRev. A3-24Front Paper Guide;BEject Paper RollerAssemblyFigure 3-21. Removing the Paper Eject Roller AssemblyPF Ro

Chapter3 Disassembly and AssemblyRev. A3-253.2.4.9 Removing the PE Paper Detector Assembly1. Remove the housing.(Refer to 3.2.1)2. Release two fixed

EPSON Stylus Color 400 Service ManualRev. A3-263.2.4.10 Removing the HP Detector1. Remove the housing. (Refer to 3.2.1)2. Remove the cable from the H

Chapter 4Adjustment 4.1 Overview...4-1 4.

Chapter4 AdjustmentRev. A4-14.1 OverviewThis section describes adjustments required when the printer is disassembled and assembled after repair.4.1.1

EPSON Stylus Color 400 Service ManualRev. A4-24.2 AdjustmentThis section explains specific procedures for each adjustment required for Stylus Color 40

Chapter4 AdjustmentRev. A4-3Left SideRight SideFront Paper Guide;BLib;Avoid 2 libs from left edgeLib; Avoid 2 libs from right edgeCarriageThickness Ga

EPSON Stylus Color 400 Service ManualRev. A4-44.2.2 Adjustment by Adjustment ProgramIn this printer, it is necessary to set correct information for e

Chapter4 AdjustmentRev. A4-54.2.2.2 Initial Ink Charge OperationThere is no ink charged in the ink path of the print head that is mounted on the prin