Epson C82324* Service Manual

EPSON TERMINAL PRINTEREPL-N2000SERVICE MANUALEPSON4006861

Chapter 1 Product DescriptionTable of Contents1.1 FEATURES 1-11.2 SPECIFICATIONS 1-41.2.1 Basic Specifications . . . . . . . . . . . . . . . . . .

AATop CoverShoulder ScrewCCB Screw (3X8)CCS Screw(3X8)Control PanelRight CoverCoverRear CoverLeft Cover(3X6)Right Front CoverCCS Screw(3X8)CCS Screw(3

3.2.2 Fusing Unit Removal1. Remove 2 CCS screws ( 3 X 8 ) securing the fusing unit through the rear cover and rear panel.2. Disconnect the connectors

Assembling NoteWhen reassembling the fusing unit, adjust the notch of the fusing unit with the shaft of the gear. Fusing Unit(viewed from the top)CCS

3.2.3 PWB-E Board (Power Supply Board) Removal1. Remove the outer covers. (Refer to Section 3.2.1.)2. Disconnect 5 connectors ( NC 1 to CN5) on the el

3.2.4 Main Controller Board RemovalRefer to Figure 3-6.3.2.4.1 Shield Frame Removal1. Remove the outer covers. (Refer to Section 3.2.1.)2. Remove 15 C

3.2.5 Rear Panel Removal1. Remove the outer covers. (Refer to Section 3.2.1.)2. Remove the C207 MAIN Board. (Refer to Section 3.2.4 .)3. Remove the 6

3.2.6 Transfer Unit Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing unit. (Refer to Section 3.2.2.)3. Remove the C20

3.2.7 High Voltage Supply (PWB-F) Board Unit RemovalRefer to Figure 3-6.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusin

3.2.8 Printhead Unit Removal 3.2.8.1 Harness Cover Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove 2 CCS screws (3X8) secu

3.2.8.2 Printhead Unit Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the harness cover. (Refer to Section3.2.8.1.)3. Dis

1.5 MAIN COMPONENTS 1-531.5.1 C207 MAIN Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-541.5.2 PWB-A

3.2.9 Paper Empty Sensor Assembly Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the harness cover. (Refer to Section 3.2

Be careful handling the Paper Empty Sensor Assembly so the detection lever doesn’t break.Detection Lever Rear SideCAUTIONEPL-N2000 Service Manual Dis

3.2.10 Paper Takeup Roller Assembly RemovalRefer to Figure 3-16.1. Open the top cover. 2. Remove the Fusing Unit.3. Release the hooks on both edges o

3.2.11 Paper Takeup Roller Unit Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section 3.2.2 .)3. R

Assembly NoteWhen reinstalling the Paper Takeup Roller Unit, fit the pins on the Paper Takeup Roller intothe corresponding holes in the Drive Unit.Wh

3.2.12 Registration Roller Assembly 1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section 3.2.2 .)3. Remo

3.2.13 PWB-A Board Unit RemovalRefer to Figure 3-6.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Se

3.2.14 Drive Unit Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section 3.2.2.)3. Remove the

Figure 3-26. Drive Unit Gear EngagementDisassembly and Assembly EPL-N2000 Service Manual3-26 Rev. A

3.2.15 Heater Lamp Removal3.2.15.1 Left Fusing Lamp Cover Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit.

List of TablesTable 1-1. Options and Consumables for EPL-N2000. . . . . . . . . . . . . . . . . . . . 1-2Table 1-2. Paper Feed Sources . . . . . .

3.2.15.3 Heater Lamp Removal1. Release the heater lamp as shown (A) in Figure 3-30.2. Remove the Heater Lamp from the Fusing Unit.❏ Be careful not t

Assembly NoteNote the direction in which the Heater Lamp is installed. Make sure that the lamp edge with thevoltage mark on it is set to the right sid

3.2.16 Paper Exit Sensor RemovalRefer to Figure 3-29.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to S

3.2.17 Lower Fusing Roller RemovalRefer to Figure 3-29.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to

3.2.18 Separator Removal1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section 3.2.2 .)3. Remove the

3.2.19 Thermistor RemovalRefer to Figure 3-29.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section

3.2.20 Thermostat RemovalRefer to Figure 3-29.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to Section

3.2.21 Upper Fusing Roller RemovalRefer to Figure 3-29.1. Remove the outer covers. (Refer to Section 3.2.1.) 2. Remove the Fusing Unit. (Refer to

3.2.22 Main Motor Removal1. Remove the Drive Unit. (Refer to Section 3.2.15.)2. Remove 3 CCB screws (3X8) securing the frame inside the Drive Unit.3.

3.2.23 Interlock Switch Removal1. Remove the main motor. (Refer to Section 3.2.22.)2. Remove the E ring for the right frame.3. Remove 10 CCB screws (3

1.1 FEATURESThe EPSON EPL-N2000 is a non-impact page printer that combines a semi-conductor laser withelectrophotographic technology. The main featur

3.2.24 Paper Takeup Solenoid Removal1. Remove the right frame for the Drive Unit. (Refer to Section 3.2.23.)2. Remove CCB screw (3X8) securing the sol

Chapter 4 AdjustmentNo adjustment is required in this product.

CHAPTER 5 TROUBLESHOOTINGTable of Contents5.1 Overview 5-15.2 Self Diagnostic Function 5-15.3 Troubleshooting 5-35.3.1 Troubleshooting Abnorm

Troubleshooting EPL-N2000 Service Manual5-2 Rev. A

5.1 OVERVIEWTypes of errors that may produce a similar symptom in a page printer, such as poor print quality orabnormal operation, vary widely, makin

Table 5-1. Service Call Error (Continued)Error Type Error Code DescriptionC11901200121013001320140019992000Cartridge access errorEEPROM write errorEEP

5.3 TROUBLESHOOTINGThis section describes troubleshooting abnormal operations and print quality problems.5.3.1 Troubleshooting Abnormal OperationsWh

SymptomMessage Printer ConditionReferenceTableThe printer does notoperate at all.The main motor does not rotate when the printer is on.Threrefore, the

Table 5-3. The Printer Does Not Operate at AllStep Cause Checkpoint Finding Solution1 Connector CN4 on thePWB-A board may not beconnected properly.Is

Table 5-6. The LCD Displays "Paper Out"Step Cause Checkpoint Finding Solution1 The paper empty sensoractuator may be bad.Does the sensor op

Table 1-1 lists the consumables and optional units available for the EPL-N2000.Table 1-1. Options and Consumables for EPL-N2000Option Part # Requireme

Table 5-8. The LCD Displays "Feed Jam"Step Cause Checkpoint Finding Solution1 The main motor may bebad.When turning on the printer, checkthe

Table 5-11. The LCD Displays "Service Req. E0003"Step Cause Checkpoint Finding Solution1 The connector may beconnected improperly.Is CN2 on

Table 5-14. The LCD Displays SERVICE REQ. E0006/0009Step Cause Checkpoint Finding Solution1 The connectors may beconnected improperly.Are the connect

Table 5-19. The LCD Displays SERVICE REQ. C1120/1121/1122/1123Step Cause Checkpoint Finding Solution1 The PROG ROM may bebad.Is operation OK when the

5.3.2 Troubleshooting Print Quality ProblemsThis section describes how to isolate print quality problems from their possible causes and remedythem, a

Foggy background High development bias Replace the high-voltage unit(PWB-F). End of PC drum life Replace the Imaging cartridge.Table 5-24. Print Qual

CHAPTER 6 MAINTENANCETable of Contents6.1 Maintenance 6-16.1.1 User Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 MAINTENANCEThis section gives information necessary for maintaining the printer in its optimum condition.Appropriate maintenance after troublesho

AppendixTable of ContentsA.1 Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1A.1.1 Engine Contr

Figure A-16. C207 MAIN Board (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-32Figure A-17. C207 MAIN Board (ROM/ROM-SIMM) . .

Table 1-1. Options and Consumables for EPL-N2000 (Continued)Option Part # DescriptionType B Interface Board C82307* 32KB Serial I/F (RS-422)C82310* 32

A.1 CONNECTOR PIN ASSIGNMENTSFigures A-1 illustrates the interconnection of the main controller board. CN13CN2CN4CN4M4CN5 CN3CN1M6M5S3CN11CN3CN8PWB-C

Table A-1. PWB-A Board Connector SpecificationsConnector Description PinsReferenceTablesCN1C207 MAIN board20 A-2CN2Printhead unit12 A-4CN3Paper near e

Table A-2. C207 MAIN Board Connector SpecificationsConnector Description PinsReferenceTablesCN1Video interface (to PWB-A board)20 A-3CN2IEEE 1284 inte

A.1.1 Engine Controller Board (PWB-A Board) Table A-3 PWB-A, C207 MAIN Board CN1 (Video I/F)Pin Signal Name I/O Description1234567891011121314151617

Table A-6 PWB-A CN4 (PWB-E)Pin Signal Name I/O Description12345678PW_FANHEATERGND+24VGNDGND+5V+5VOO------Power source fan drive signalHeater lamp dr

Table A-10 PWB-A CN9 (Imaging Cartridge Fuse)Pin Signal Name I/O Description12+5VI/C_NEW-I/OFuse detection/ fuse blow power sourceNew cartridge det

Table A-14 PWB-A CN13 (Paper Exit Sensor, Thermistor, Registration Clutch))Pin Signal Name I/O Description1234567ANODEGND+PC3THERMISTOR+5V+24VR_CLUTC

Table A-16 C207 MAIN Board CN5 (I/O Bus)Pin Signal Name I/O Description1234567891011121314151617181920212223242526272829303132333435363738394041~60

Table A-17 C207 MAIN Board CN7 (CPU Bus)Pin Signal Name I/O Description12345678910111213141516171819202122232425262728293031323334353637383940+5V+5VA

Table A-18 C207 MAIN Board CN9, CN10 (RAM-SIMM)Pin Signal Name I/O Description1234567891011121314151617181920212223242526272829303132333435363738394

1.2 SPECIFICATIONSThis section provides statistical data for the EPL-N2000.1.2.1 Basic Specifications❏ Type Desktop page printer❏ Printing method La

Table A-18 C207 MAIN Board CN9, CN10 (RAM-SIMM) (continued)Pin Signal Name I/O Description5657585960616263646566676869707172DQ27DQ12DQ28VDDDQ29DQ13D

Table A-19 C207 MAIN Board CN11 (ROM Bus)Pin Signal Name I/O Description1234567891011121314151617181920212223242526272829303132333435363738394041424

Table A-19 C207 MAIN Board CN11 (ROM Bus) (continued)Pin Signal Name I/O Description56575859606162636465666768697071727374757677787980A7A8A9A10A11A1

Table A-20 C207 MAIN Board CN12 (ROM-SIMM)Pin Signal Name I/O Description123456789101112131415161718192021222324252627282930313233343536373839404142

Table A-20 C207 MAIN Board CN12 (ROM-SIMM) (continued)Pin Signal Name I/O Description5657585960616263646566676869707172DQ27DQ12DQ28VDDDQ29DQ13DQ30DQ

Table A-21 C207 MAIN Board CN14 (IC Card Slot)Pin Signal Name I/O Description123456789101112131415161718192021222324252627282930313233343536373839404

Table A-21 C207 MAIN Board CN14 (IC Card Slot) (continued)Pin Signal Name I/O Description56575859606162636465666768A25NCRESETWAITNCREGBVD2BVD1D8D9D1

A.2 Exploded DiagramsFigure A-2. HousingAppendix EPL-N2000 Service ManualA-18 Rev. A

Figure A-3. FramesEPL-N2000 Service Manual AppendixRev. A A-19

Fifure A-4. Paper Takeup Section (1)Appendix EPL-N2000 Service ManualA-20 Rev. A

❏ Paper sizes See Table 1-3.Front tray Width: 92 mm to 330.2 mm (3.26" to 13") Length: 140 mm to 483 mm (5.5" to 19")Table 1-3.

Figure A-5. Paper Takeup Section (2)EPL-N2000 Service Manual AppendixRev. A A-21

Figure A-6. Drive UnitAppendix EPL-N2000 Service ManualA-22 Rev. A

Fifure A-7. Transfer UnitEPL-N2000 Service Manual AppendixRev. A A-23

Figure A-8. Fusing UnitAppendix EPL-N2000 Service ManualA-24 Rev. A

Figure A-9. Paper Cassette UnitEPL-N2000 Service Manual AppendixRev. A A-25

Figure A-10. Lower Paper Cassette (Standard)Appendix EPL-N2000 Service ManualA-26 Rev. A

Figure A-11. Lower Paper Cassette (Optional)EPL-N2000 Service Manual AppendixRev. A A-27

Figure A-12. Optional Duplex UnitAppendix EPL-N2000 Service ManualA-28 Rev. A

A.3 CIRCUIT BOARD COMPONENT LAYOUTFigure A-13. C202 MAIN Board Component Layout (Front)EPL-N2000 Service Manual AppendixRev. A A-29

Figure A-14. C207 MAIN Board Component Layout (Rear)Appendix EPL-N2000 Service ManualA-30 Rev. A

❏ Paper types Normal paper: 60 to 90 g/m2 (16 to 24 lb)Recycled paper: 60 to 90 g/m2 (16 to 24 lb)Special paper: Transparencies (OHP), letterhead, env

R2R4PJ2PJ4191IC1C84R11PJ12C9C7IC2PJ1979C1R3R5PJ9C2PJ8R8R1CN1PJ7PJ6PJ1PJ3PJ5PJ151C4PJ18PJ11PJ17PJ16-711VC2 7 PROG2 23149IC6IC3IC4PJ14PJ13PJ1EPSON.981

ROM ModuleROM_MOD.SCHCS1XCS2XCS0XEEPXRESETXRDXWRXBE0XBE1XBE2XBE3XD[0..31]A[0..27]CS0CS1CS2D[0..31]A[0..27]CS3 1 2 3 48765RM5422/4MA0MA1MA2MA3A2 22

D7D6D5D4D3D2D1D0D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16D15D14D13D12D11D10D9D8A21A22A25A24A23A22A21A20A19A18A17A16A15A14A13A12A11A10A9A8A7A6A5

RAS0XCAS_HLXCAS_HHXWEXD[0..31]CAS_LHXCAS_LLXMA[0..10]RAS2XRAS3XRAS1XMA[0..10]D[0..31]RAS4XRAS5XDQ0 2DQ1 4DQ2 6DQ3 8DQ4 20DQ5 22DQ6 24DQ7 26DQ8 49D

D0 36D1 35D2 34D3 33D4 32D5 31D6 30D7 29A0 28A1 27A2 26A3 25CS 18RD 17WR 16INH 12RESET 11CMREQ 13WRRDY 14RDREQ 15TXD 7READY 8RXD 9+5V 1+5V 2+5V

R86 680 1 2 3 48765RM47 3.3K/4R85 3.3KC134 100PC135 100PC136 100PC137 100PC138 100PC139 100PCPUD0 2CPUD1 3CPUD2 4CPUD3 5CPUD4 8CPUD5 9CPUD6

A12A23A34A45A56A67A78A89G19DIR 1B1 18B2 17B3 16B4 15B5 14B6 13B7 12B8 11+5 20GND 10IC2674LS245CD0CD1CD2CD3CD4CD5CD6RAD5RAD6RAD7RAD8RAD9RAD10RAD11RAD12

PJ18 CJPJ15 CJPJ16 CJPJ17 CJPJ1 CJPJ2 CJPJ3 CJPJ10 CJPJ11 CJR2 33A20A21D[0..31]A[0..23]D05D17D29D311D413D515D617D719D821D923D1025D1127D1229D1331D1433D

EPSON

❏ Printable area: See Figure 1-2.Note:For A3+ paper (E X F) : 297 × 420 mm ( 12.12 X 17.14 ")The maximum printable area with good image quality (

NOTICEAll right reserved. Reproduction of any part of this manual in any form wharsoever without SEIKO EPSON's expresswritten permission is forbi

1.2.3 Specifications for Reliability, Durability, and Maintenance ❏ MPBF* (mean prints between failures): over 60,000 sheets or 3,000 hours* MPBF in

1.2.4 Environmental Conditions for Operation (Including Consumables)❏ Temperature: 10 to 35o C (50 to 90o F)❏ Humidity: 15 to 85% RH (withour condens

1.2.5 Environmental Conditions for Storage and TransportationTable 1-9. Environmental Conditions for StorageStorage life18 months after production, p

1.2.6 Specifications for the Imaging Cartridge❏ Cartridge life: 10,000 sheets ** This number is printable pages in continuous print mode using A4 or

1.2.7 Applicable StandardsSafety Standards❏ USA UL1950❏ Canada CSA950❏ Europe EN60950:1992Annex ZB, ZCSafety Regulations (Laser Radiation)❏ USA 21 CFR

1.2.10 Controller Specifications❏ CPU: RISC type CPU: MB86935-50Clock speed: 47.6 MHz❏ RAM: Standard: 4MBMax.*1:68MB ❏ROM: 4MB❏ EEPROM: 16Kbits❏ H

Table 1-11. Differences between LJ4-GL/2 Mode and GL-like ModeLJ4-GL/2 Mode GL-like ModeOrientation Can be set in printing menu Always landscapePlotte

Table 1-12. Built-in FontsResident FontsApplicable ModesPCL 5eGL/2ESC/P 2 FXBitmap fontLine Printer S NS NSScalable fontsDutch 801 Roman SWCDutch 801

In LJ4 Emulation Mode (Bitmap Fonts): 28 Symbol Sets Roman-8 *1ECM94-1 Norwege 2 SpanishRoman Extension 8859-9 ISO Italian SwedishLegal 8859-2 ISO UK

1.3 INTERFACE SPECIFICATIONSThe following interfaces are available for EPL-N2000 printer.❏ Standard: Parallel B type I/FParallel C type I/FNetwork I/

PRECAUTIONSPrecautionary notations throughout the tect are categorized relative to 1) personal injury, and 2)damage to equipment:DANGERSingnals a prec

Table 1-13. Timing in Compatibility ModeDescription *1Minimum Typical Maximum(1) DATA setup0.5 µs(2) DATA hold0.5 µs(3)STROBE↑ pulse width↓0.5 µs(4) B

Table 1-14. Pin Assignments for Parallel B Type I/F (Continued) Pin Compatibility mode Nibble mode ECP mode I/O31 nInit nReverseReq I32 Fault nDataAva

BUSY (out)Compatible mode: HIGH status indicates the printer is not ready to accept data.Negotiation phase: Reflects busy status in forward channel.Re

PeriLH (out)[SE specification]Only defined for IEEE 1284-C connector.Init (in)Compatible mode: As long as this signal is LOW, the Busy signal remains

1.3.1.2 Parallel Interface C Type Specifications❏ Type: Bidirectional parallel I/F (IEEE-1284)❏ Operational modes: Compatibility, nibble, ECP modes(By

1.3.1.3 Network InterfaceType-B I/F Board (C82331*) (standard) is installed in the Type-B interface slot.❏ Interface Protocol: NovellNetware 3.X (IP

1.3.2 Serial Interface Specifications ( LocalTalk/Serial Module)❏ Type: RS-232C/current loop❏ Transfer system: Full duplex❏ Transfer speed: 300, 600,

TTY-TXDCurrent loop signal: HIGH impedance (SPACE) between pins 17 and 24 or X-ON signalsent across pins 17 and 24 indicates that the printer is ready

1.3.3 Optional LocalTalk Interface ( LocalTalk/Serial Modelu)This printer can use an optional LocalTalk interface module.Type: LocalTalkSignal level:

1.4 OPERATING INSTRUCTIONSThis section describes the functions performed through the control panel, such as test print,hexadecimal dump, and the Sele

SAFETY INFORMATIONThis printer is a page printer which operates by means of a laser. There is no possibility of danger fromthe laser, provided the pri

(4) SelecType Mode LED (Green Light)The printer is in the SelecType mode when this light is ON.(5) Continue LED (Yellow Light)When this light is ON, i

(12) SelecType/AltSelects One Touch Mode 1 or 2. Press this button repeatedly to scroll modes in the order:SelecType Mode, One Touch Mode 1, One Touch

Table 1-19. SelecType OptionsMenus(Changed by MENUbutton)Items(Changed by ITEM Button)Values(Changed by ↑ or ↓ button)(Set by ENTER button)TEST MENU S

Table 1-19. SelecType Options (Continued)Menus Items ValuesCONFIG MENU BiRITechMedium, Dark, Off, LightTONER SAVEOff, OnDENSITY3,4,5,1,2TOP OFFSET –9

Table 1-19. SelecType Options (Continued)Menu Item Available OptionsSERIAL MENU *2WORD LENGTH8, 7BAUD RATE9600, 19200, 38400, 57600, 300, 600, 1200, 2

Table 1-19. SelecType Options (Continued)Menu Item Available OptionsGL2 GLMODEGLlike, LJ4GL2SCALEOFF, A0, A1, A2, A3ORIGINCORNER, CENTERPENPen0 , Pen1

Table 1-19. SelecType Options (Continued)Menu Item Available OptionsFX FONTCourier, Roman, Orator S, Sans-serif, Prestige, Script ,OCR BPITCH10 CPI, 1

Notes:Underlined values in boldface show factory settings.*1: Appears only when the optional EPSONScript Level 2 Post Script ROM SIMM (C83226*)isinst

1.4.3 Service ModeThis printer has the following 5 service modes.❏ Hexadecimal dump mode ❏ EEPROM Initialize mode❏ Format Flash Card ❏ Page Counter cl

1.4.4 Display of MessagesThis section describes messages on LCD. They are divided into 4 categories; status messages, errormessages, warning messages

For Finland. Sweden Users:"" VAROITUSLaitteen kayttaminen muulla kuin t&a kayttoohjeessa mainitulla tavalla saat-taa altistaa kayttaja

1.4.4.2 Error MessagesIf any of the following errors occurs, it will be displayed on the LCD. The error must be clearedimmediately, using the measur

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsFeed JamStatusPaper has not been fed properly from the specified paper entrance.

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsManual Feed bbbbStatusThe printer has received data when Manual Feed is set t

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsPaper Out aaaaa bbbbb*1Measure1. When "aaaa" is LC1 or LC2:The error i

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsPrint OverrunStatusThe time required to develop an image exceeds the print speed

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsMem OverflowMeasure[SelecType: Auto Cont = OFF in the Config menu]The error is c

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsIllegal CardStatusAn IC card that has been inserted will not work with this print

Table 1-21. Error Messages (Continued)Error Messages and DescriptionsWrite Error SIMMStatusThis error can be caused by any of 3 situations described b

1.4.4.3 Warning MessagesIf any of the following warning errors occurs, it is displayed on the LCD. The printing process itselfis not affected by any

Table 1-22. Warning Messages (Continued)Warning Messages and DescriptionsCheck Serial I/FStatusThis warning is given after detection of an error such

For EuropelASERKlASSE1NACHIEC825CUBS1 LMERPRODUCTTOIEC825WE1 UWR PR0DUKTI.H.T. IEC825LUOKANl lAsERwlE[Label inside printer]The following laser safety

Table 1-22. Warning Messages (Continued)Warning Messages and Descriptions (Continued)Format Error CardStatusData can be written onto the card inserted

1.4.4.4 Messages at Power OnTable 1-23. Power On MessagesStatus Messages and DescriptionROM CheckStatusSystem ROM being checked.RAM Check XX . XMBStat

1.4.5 Printer SharingThis section describes printer sharing. This printer has two methods of printer sharing: port fixedmode and auto sense mode. The

1.4.6 Controller RAM StatusRAM on the controller of this printer uses dynamic memory allocation to make the best use of thememory. Therefore, no porti

1.4.9 PGI (Photo and Graphics Improvement )PGI enhances the print quality of halftones and tone gradations, generally used in photographicand graphic

1.5 MAIN COMPONENTSTo simplify maintenance and repair, the main components of the EPL-N2000 have been designedfor easy removal and replacement. The m

1.5.1 Main Controller (C207 MAIN Board)The C207 MAIN board is the main controller board for the EPL-N2000. Parallel B Type I/FParallel C Type I/FType

1.5.2 PWB-A BoardThis unit is the engine control board. The engine is driven by the commands from the C207 MAINboard, including information from the s

1.5.4 PWB-F Board UnitThe PWB-F is the high-voltage supply circuit board. It applies +24 VDC to the development bias,OPC drum charge bias, and image t

1.5.6 Registration Roller AssemblyThis unit is used to prevent paper skew prior to transfer process. Paper reaches the register, pushesagainst the reg

For Finland. Sweden Users:"" VAROITUSLaitteen kayttaminen muulla kuin " kayttoohjeessa mainitulla tavalla saat-taa altistaa kayttajan

1.5.8 Print Head Unit (Optical Unit)The Print Head unit consists of the laser diode (semi-conductor laser), the polygon motor whichdrives the polygon

1.5.10 Drive UnitThe drive unit, which consists of the main motor and a number of transmitting gears, drives thepaper transport rollers, Imaging cartr

1.5.12 Cassette UnitThe cassette unit is used to feed paper from a cassette into the printer. The paper empty sensordetects paper outs, and the paper

CHAPTER 2 OPERATING PRINCIPLESTable of Contents2.1 Engine Operation 2-12.1.1 Printing Process . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Engine OperationThis section describes the functions and operating principles of the EPL-N2000 engine. 2.1.1 Printing ProcessThe whole printing pr

2.1.1.1 Charging ProcessIn the charging process, the high voltage unit applies negative DC voltage as the bias voltage to therayon charging brush. The

2.1.1.2 Exposure ProcessIn the exposure process, the laser unit emits laser beams onto the PC drum surface to create anelectrostatic latent image. The

2.1.1.3 Developing ProcessPaper goes through this process to convert electrostatic image produced through the charging andexposure processes into visi

2.1.1.4 Transfer ProcessIn the transfer system, toner image created on the PC drum through the developing process istransferred to the paper. The roll

2.1.1.5 Fusing ProcessThe fusing unit permanently fixes the toner image, transferred from the PC drum, onto the paper.The fusing system this printer u

REVISION SHEETRevisionRev. AIssued DateNovember 17, 1996Revision Page1st issued

2.1.1.6 Cleaning ProcessToner remaining on the PC drum after transfer process is scraped off with the cleaning blade,placed in close contact with the

2.1.2.2 Paper Feeding Mechanism❏ Multi Purpose TrayThe drive for the tray is transmitted to the push-down cam by way of the main motor, papertakeup cl

❏ Lower Cassette TrayThe drive for the lower cassette tray is transmitted from the printer to the transport roller viathe transmission gear, paper tak

2.2 Controller Mechanism2.2.1 Engine ControlThis section gives information on the engine controller, power supply board, and the high-voltagesupply bo

2.2.1.1 Main Motor Mechanism and ControlThe main motor, which is located in the driving unit, transmits drive force to the rollers in theprinter. A ma

2.2.1.3 Fusing ControlThe thermistor detects the surface temperature of the fusing roller and inputs the correspondinganalog voltage to the PWB-A boar

2.2.1.4 Sensor ControlThis section gives information on the sensors and how they are used to detect abnormal operations.Figure 2-13 shows the sensor l

A paper jam is detected if any of following conditions occurs:❏ During feeding from the MP tray, the paper takeup sensor (PC1) fails to go OFF withina

2.2.2 Video Control Operation 2.2.2.1 C207 MAIN Board OperationThe video controller receives print data and converts it into corresponding image signa

Table 2-1 lists the main components of the C207 MAIN board and their functions.Table 2-1. Functions of Main Board ComponentsComponent Location Functio

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

2.2.2.2 Video Controller Operation PrinciplesPrint data and commands transmitted from the host computer through the network, parallel, oroptional I/F

CHAPTER 3 DISASSEMBLY AND ASSEMBLYTable of Contents3.1 General Description3.1.1 Precautions for Disassembly /Assembly . . . . . . . . . . . . .

List of TablesTable 3-1. Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Table 3-2. Scr

3.1 GENERAL INFORMATIONThis chapter describes the disassembly/assembly procedures to be used for replacing the mainassemblies of the EPL-N2000.3.1.1

3.1.3 Specifications for ScrewsIn the following sections, abbreviations are used for small parts such as screws and washers. Table3-2 lists these abb

3.1.4 Service Checks after RepairCheck the repaired unit using the list in Table 3-4 before returning the printer to the user to ensurethat repair a

3.1.5 Servicing OperationsThis section describes the special service modes and combinations of switches used to enter eachmode. The modes listed in t

Use the 2 other modes listed below when you need information to analyzing the cause of apersistent error related to a firmware malfunction. ❏Resetting

3.2 DISASSEMBLY AND ASSEMBLYThis section describes and illustrates the procedures for disassembling and assembling thecomponents of the EPL-N2000. The

3.2.1.5 Control Panel Removal1. Remove the FFC from the C207 MAIN Board.2. Remove 2 CCS screws (3 X 8) from the right and upper side of the panel. 3.