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Epson EPL-N2000 Service Manual

Epson EPL-N2000 Service Manual

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EPSON TERMINAL PRINTER
SERVICE MANUAL
EPSON
4006861

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  • Page 1 EPSON TERMINAL PRINTER SERVICE MANUAL EPSON 4006861...
  • Page 2 NOTICE All right reserved. Reproduction of any part of this manual in any form wharsoever without SEIKO EPSON's express written permission is forbidden. The contents of this manual are subject to change without notice. All efforts have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
  • Page 3 SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. WARNING 1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATIG PLATE.
  • Page 4 SAFETY INFORMATION This printer is a page printer which operates by means of a laser. There is no possibility of danger from the laser, provided the printer is operated according to the instructions in this manual provided. Since radiation emitted by the laser is completely confined within protective housings, the laser beam cannot escape from the machine during any phase of user operation.
  • Page 5 A laser safety labels is attached on the outside of the printer shown below. For United State laser product conforms to the applicable This requirement of 21 Chapter I, subchapter J. SEIKO EPSON CORP. Hirooka Office 80 Hirooka, Shiojiri-shi, Nagano-ken, Japan MANUFACTURED:...
  • Page 6 For Europe [Label inside printer] The following laser safety label will be attached inside the printer as shown below. For Denmark, Finland, Sweden, and Norway INVISIBLE LASER RADIATION WHEN OPEN AVOID &X'GSURE TO SEAM ASDECKUNG GEOFFNET NlCHl DEM SlRAHL...
  • Page 7 A laser safety labels is attached on the outside of the printer shown below. For United State laser product conforms to the applicable This requirement of 21 Chapter I, subchapter J. SEIKO EPSON CORP. Hirooka Office 80 Hirooka, Shiojiri-shi, Nagano-ken, Japan MANUFACTURED:...
  • Page 8 REVISION SHEET P a g e Revision I s s u e d R e v i s i o n D a t e Rev. A November 17, 1996...
  • Page 9 TABLE OF CONTENTS CHAPTER 1. GENERAL DESCRIPTION CHAPTER 2. OPERATION PRINCIPLES CHAPTER 3. DISASSEMBLY AND ASSEMBLY CHAPTER 4. ADJUSTMENTS CHAPTER 5. TROUBLESHOOTING CHAPTER 6. MAINTENANCE APPENDIX...

  • Page 10: Table Of Contents

    1.4.6 Controller RAM Status........1-51 1.4.7 EJL (EPSON Job Control Language) ......1-51 1.4.8 BiRITech (BI Resolution Improvement Technology) .
  • Page 11 List of Figures Figure 1-1. Exterior View of the EPL-N2000 ......1-1 Figure 1-2. Printable Area ........1-7 Figure 1-3.
  • Page 12 List of Tables Table 1-1. Options and Consumables for EPL-N2000....1-2 Table 1-2. Paper Feed Sources ........1-4 Table 1-3.

  • Page 13: Features

    1.1 FEATURES ® The EPSON EPL-N2000 is a non-impact page printer that combines a semi-conductor laser with electrophotographic technology. The main features are: Paper feed up to 1150 sheets Standard: 150 sheets for MP (multipurpose) tray (for A4 or letter-size paper):...

  • Page 14: Table 1-1. Options And Consumables For Epl-N2000

    Product Description EPL-N2000 Service Manual Table 1-1 lists the consumables and optional units available for the EPL-N2000. Table 1-1. Options and Consumables for EPL-N2000 Option Part # Requirements ROM SIMM C83226* Minimum RAM size: 2MB (EpsonScript Level 2 PostScript ROM...
  • Page 15 EPL-N2000 Service Manual Product Description Table 1-1. Options and Consumables for EPL-N2000 (Continued) Option Part # Description Type B Interface Board C82307* 32KB Serial I/F (RS-422) C82310* 32KB Parallel Interface C82312* AppleTalk Interface C82314* Coax Interface C82315* Twinax Interface C82313*...

  • Page 16: Specifications

    Product Description EPL-N2000 Service Manual 1.2 SPECIFICATIONS This section provides statistical data for the EPL-N2000. 1.2.1 Basic Specifications Type Desktop page printer Printing method Laser beam scanning and dry electrophotographic process Resolution 600 dpi Printing speed Single-sided print: 20.0 ppm* , 11.0 ppm*...

  • Page 17: Table 1-3. Available Paper Sizes

    EPL-N2000 Service Manual Product Description 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. Available Paper Sizes MP Tray Cassette Size Paper Type...

  • Page 18: Table 1-4. Paper Types

    Product Description EPL-N2000 Service Manual Paper types Normal paper: 60 to 90 g/m (16 to 24 lb) Recycled paper: 60 to 90 g/m (16 to 24 lb) Special paper: Transparencies (OHP), letterhead, envelopes, labels, thick paper (91 to 157 g/m , 24 to 42 lb) 328 mm ×...

  • Page 19: Electric Specifications

    EPL-N2000 Service Manual Product Description Printable area: See Figure 1-2. Figure 1-2. Printable Area For A3+ paper (E X F) : 297 × 420 mm ( 12.12 X 17.14 ") Note: The maximum printable area with good image quality (E X F) : 323 ×...

  • Page 20: Specifications For Reliability And Durability

    Product Description EPL-N2000 Service Manual 1.2.3 Specifications for Reliability, Durability, and Maintenance MPBF* (mean prints between failures): over 60,000 sheets or 3,000 hours MPBF indicates an average number of pages printed before occurrence of problem requiring replacement or service. Table 1-7. Paper Feed Reliability...

  • Page 21: Environmental Conditions For Operation (Including Consumables)

    EPL-N2000 Service Manual Product Description 1.2.4 Environmental Conditions for Operation (Including Consumables) Temperature: 10 to 35 C (50 to 90 Humidity: 15 to 85% RH (withour condensation) Altitude: 2500 m (8202’) or less Atmospheric pressure: 760 hpa or more Levelness:...

  • Page 22: Environmental Conditions For Storage And Transportation

    Product Description EPL-N2000 Service Manual 1.2.5 Environmental Conditions for Storage and Transportation Table 1-9. Environmental Conditions for Storage 18 months after production, packed. Storage life Normal (over full storage life ) 0 to 35° C (32 to 95 F) Extremes High 35 to 55°...

  • Page 23: Specifications For The Imagingcartridge

    EPL-N2000 Service Manual Product Description 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 letter size paper at a 5% image ratio (black/white ratio). Life varies, depending on the image ratio and printing mode, such as continuous/intermittent, density and toner saver.

  • Page 24: Applicable Standard

    Product Description EPL-N2000 Service Manual 1.2.7 Applicable Standards Safety Standards UL1950 Canada CSA950 Europe EN60950:1992 Annex ZB, ZC Safety Regulations (Laser Radiation) 21 CFR Chapter 1 Subchapter J Part 1040 Europe IEC825 47 CFR Part 15 Subpart B Class A...

  • Page 25: Controller Specifications

    I239X *1: Included in HP LaserJet 4 emulation. *2: EPSON GL/2 mode, which emulates the GL/2 mode in the HP LaserJet 4 emulation, has 2 modes; LJ4-GL2 mode and GL-like mode. LJ4-GL2 mode: Used to print with software that supports the HP 7600 series electrostatic plotter.

  • Page 26: Font Specifications

    Plotter Unit 1/1016 inch 1/1021 inch Picture Frame Same as in GL/2 mode in HP Hard clip limit for EPSON GL LaserJet mode mode Default Value for P1 and P2 Left and right bottom edge of Inside the picture frame...

  • Page 27: Table 1-12. Built-In Fonts

    EPL-N2000 Service Manual Product Description Table 1-12. Built-in Fonts Applicable Modes Resident Fonts PCL 5e ESC/P 2 GL/2 Bitmap font Line Printer Scalable fonts Dutch 801 Roman SWC Dutch 801 Bold SWC Dutch 801 Italic SWC Dutch 801 Bold Italic SWC...
  • Page 28 Product Description EPL-N2000 Service Manual In LJ4 Emulation Mode (Bitmap Fonts): 28 Symbol Sets Roman-8 * ECM94-1 Norwege 2 Spanish Roman Extension 8859-9 ISO Italian Swedish Legal 8859-2 ISO Portuguese IBM-US IBM-DN Norwege 1 IBM Portuguese ANCI ASCII Swedish 2...

  • Page 29: Interface Specifications

    EPL-N2000 Service Manual Product Description 1.3 INTERFACE SPECIFICATIONS The following interfaces are available for EPL-N2000 printer. Standard: Parallel B type I/F Parallel C type I/F Network I/F Optional: LocalTalk / Serial Module * Type-B I/F Connector for LocalTalk is built in on the I/F bracket, along with connectors for standard I/F.

  • Page 30: Table 1-13. Timing In Compatibility Mode

    Product Description EPL-N2000 Service Manual Table 1-13. Timing in Compatibility Mode Description * Minimum Typical Maximum 0.5 µs (1) DATA setup 0.5 µs (2) DATA hold 0.5 µs (3) STROBE↑ pulse width↓ (4) BUSY↓ to STROBEX↓ 0.5 ms (5) STROBEX↓ to BUSY↑...
  • Page 31 EPL-N2000 Service Manual Product Description Table 1-14. Pin Assignments for Parallel B Type I/F (Continued) Compatibility mode Nibble mode ECP mode nInit nReverseReq Fault nDataAvail nPeriphReq — — — nSelctIn IEEE1284 active NC: Not connected. CG: CHASSIS -GND Signal descriptions...
  • Page 32 Product Description EPL-N2000 Service Manual BUSY (out) Compatible mode: HIGH status indicates the printer is not ready to accept data. Negotiation phase: Reflects busy status in forward channel. Reverse data transfer Nibble data bit is 3, then 7 in nibble mode.
  • Page 33 EPL-N2000 Service Manual Product Description 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 HIGH. 1. The printer processes data received before the signal goes LOW.

  • Page 34: Parallel Interface C Type Specifications

    Product Description EPL-N2000 Service Manual 1.3.1.2 Parallel Interface C Type Specifications Type: Bidirectional parallel I/F (IEEE-1284) Operational modes: Compatibility, nibble, ECP modes (Byte mode and EPP mode are not supported.) Data transmission system: STROBE synchronization, 8-bit parallel data transfer Handshaking:...

  • Page 35: Network Interface

    ® ® Interface Protocol: Novell Netware 3.X (IPX/SPX) EtherTalk Epson Peer to Peer Protocol TCP/IP Connector: RJ45 X 1 (10Base T) BNC X 1 (10Base 2) Applicable Cable 2-pair Category 3 or 4 or 5 UTP (10Base T) RG-58A/U (10Base 2)

  • Page 36: Serial Interface Specifications

    Product Description EPL-N2000 Service Manual 1.3.2 Serial Interface Specifications ( LocalTalk/Serial Module) Type: RS-232C/current loop Transfer system: Full duplex Transfer speed: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps Synchronization: Asynchronous start-stop system Start-bit: 1 bit Stop-bit: 1 or 2 bits...
  • Page 37 EPL-N2000 Service Manual Product Description TTY-TXD Current loop signal: HIGH impedance (SPACE) between pins 17 and 24 or X-ON signal sent across pins 17 and 24 indicates that the printer is ready to accept data; LOW impedance (MARK) or X-OFF signal sent indicates that the printer is busy.

  • Page 38: Optional Localtalk Interface

    Product Description EPL-N2000 Service Manual 1.3.3 Optional LocalTalk Interface ( LocalTalk/Serial Modelu) This printer can use an optional LocalTalk interface module. Type: LocalTalk Signal level: Same as RS-422 signal level Protocol: X-ON/X-OFF (cannot be combined with DTR control) DTR control (cannot be combined with X-ON/X-OFF) Transfer speed: 230.4K bps...

  • Page 39: Operating Instructions

    EPL-N2000 Service Manual Product Description 1.4 OPERATING INSTRUCTIONS This section describes the functions performed through the control panel, such as test print, hexadecimal dump, and the SelecType functions. 1.4.1 Control Panel This section gives instructions for the control panel, which consists of an LCD, 8 buttons, and 6 indicator lights.
  • Page 40 Product Description EPL-N2000 Service Manual (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, it indicates an error has occurred that can be cleared by pressing the Continue button.

  • Page 41: Panel Setting

    EPL-N2000 Service Manual Product Description (12) SelecType/Alt Selects One Touch Mode 1 or 2. Press this button repeatedly to scroll modes in the order: SelecType Mode, One Touch Mode 1, One Touch Mode 2, and Normal Mode. (13) Continue/Reset If you press this button while the Continue LED is flashing, it clears the error. Pressing this button while the On Line LED is OFF puts the printer back in Ready status.

  • Page 42: Table 1-19. Selectype Options

    Product Description EPL-N2000 Service Manual Table 1-19. SelecType Options Values Menus Items (Changed by ↑ or ↓ button) (Changed by MENU (Changed by ITEM Button) button) (Set by ENTER button) TEST MENU STATUS SHEET LJ4 FONT SAMPLE ESC/P 2 FONT SAMPLE...
  • Page 43 EPL-N2000 Service Manual Product Description Table 1-19. SelecType Options (Continued) Menus Items Values CONFIG MENU BiRITech Medium, Dark, Off, Light TONER SAVE Off, On DENSITY 3,4,5,1,2 TOP OFFSET –9.0 to 0.0 to 99.0 mm in steps of 0.5 mm LEFT OFFSET –9.0 to 0.0 to 150.0 mm in steps of 0.5 mm...
  • Page 44 Product Description EPL-N2000 Service Manual Table 1-19. SelecType Options (Continued) Menu Item Available Options SERIAL MENU * WORD LENGTH 8, 7 BAUD RATE 9600, 19200, 38400, 57600, 300, 600, 1200, 2400, 4800 PARITY None, Even, Odd STOP BIT 1, 2...
  • Page 45 EPL-N2000 Service Manual Product Description Table 1-19. SelecType Options (Continued) Menu Item Available Options GLMODE GLlike, LJ4GL2 SCALE OFF, A0, A1, A2, A3 ORIGIN CORNER, CENTER Pen0 , Pen1, Pen2* to Pen16* Butt, Square, Triangular, Round JOIN Mitered, Miteredbeveled, Triangular, Round,...
  • Page 46 Product Description EPL-N2000 Service Manual Table 1-19. SelecType Options (Continued) Menu Item Available Options FONT Courier, Roman, Orator S, Sans-serif, Prestige, Script , OCR B PITCH 10 CPI, 12 CPI, 15 CPI, Prop OFF, ON CONDENSED T-MARGIN 0.40 to 0.50 to 1.50 inch in steps of 0.05 inch...
  • Page 47 EPL-N2000 Service Manual Product Description Notes: Underlined values in boldface show factory settings. *1: Appears only when the optional EPSONScript Level 2 Post Script ROM SIMM (C83226*)is installed. *2: Appears when the optional LocalTalk serial interface is installed in serial interface mode.

  • Page 48: Service Mode

    Product Description EPL-N2000 Service Manual 1.4.3 Service Mode This printer has the following 5 service modes. Hexadecimal dump mode EEPROM Initialize mode Format Flash Card Page Counter clear Flash ROM update 1.4.3.1 Hexadecimal Dump Mode Button: Form Feed button with Power Switch On.

  • Page 49: Display Of Message

    EPL-N2000 Service Manual Product Description 1.4.4 Display of Messages This section describes messages on LCD. They are divided into 4 categories; status messages, error messages, warning messages, and service call error messages. 1.4.4.1 Status Messages The LCD normally indicates the printer’s status and the software mode.

  • Page 50: Status Message

    Product Description EPL-N2000 Service Manual 1.4.4.2 Error Messages If any of the following errors occurs, it will be displayed on the LCD. The error must be cleared immediately, using the measures shown in the following tables. Table 1-21. Error Messages...
  • Page 51 EPL-N2000 Service Manual Product Description Table 1-21. Error Messages (Continued) Error Messages and Descriptions Feed Jam Paper has not been fed properly from the specified paper entrance. If paper is Status also jamming in the paper path, it is considered a Paper Jam error.
  • Page 52 Product Description EPL-N2000 Service Manual Table 1-21. Error Messages (Continued) Error Messages and Descriptions Manual Feed bbbb The printer has received data when Manual Feed is set to ON through the Status SelecType mode or a command. On Line Flashing...
  • Page 53 EPL-N2000 Service Manual Product Description Table 1-21. Error Messages (Continued) Error Messages and Descriptions Paper Out aaaaa bbbbb* When "aaaa" is LC1 or LC2: The error is cleared by inserting the "bbbb" size paper into cassette "aaaa". When "aaaa" is MP: Measure The error is cleared by inserting the "bbbb"...
  • Page 54 Product Description EPL-N2000 Service Manual Table 1-21. Error Messages (Continued) Error Messages and Descriptions Print Overrun The time required to develop an image exceeds the print speed because the Status current data is too complicated. On Line OFF: Size Ignore = OFF...
  • Page 55 EPL-N2000 Service Manual Product Description Table 1-21. Error Messages (Continued) Error Messages and Descriptions Mem Overflow [SelecType: Auto Cont = OFF in the Config menu] The error is cleared by using any of the following methods: Press the Continue button. Results vary by case, as described below.
  • Page 56 Product Description EPL-N2000 Service Manual Table 1-21. Error Messages (Continued) Error Messages and Descriptions Illegal Card Status An IC card that has been inserted will not work with this printer. On Line Continue Keeps the same status as before. Form Feed Turn the printer off and remove the card.
  • Page 57 EPL-N2000 Service Manual Product Description Table 1-21. Error Messages (Continued) Error Messages and Descriptions Write Error SIMM This error can be caused by any of 3 situations described below: No data can be written onto the SIMM. Status Writing is not completed properly.

  • Page 58: Warning Messages

    Product Description EPL-N2000 Service Manual 1.4.4.3 Warning Messages If any of the following warning errors occurs, it is displayed on the LCD. The printing process itself is not affected by any of the warning messages, which is soon replaced by a Ready message.
  • Page 59 EPL-N2000 Service Manual Product Description Table 1-22. Warning Messages (Continued) Warning Messages and Descriptions Check Serial I/F This warning is given after detection of an error such as a framing error, parity error, overrun error, or break character error when the serial I/F is installed.
  • Page 60 Product Description EPL-N2000 Service Manual Table 1-22. Warning Messages (Continued) Warning Messages and Descriptions (Continued) Format Error Card Data can be written onto the card inserted, but the card hasn’t been formatted. This message can be ignored when the card is new. If the card, however, has...

  • Page 61: Message At Power On

    EPL-N2000 Service Manual Product Description 1.4.4.4 Messages at Power On Table 1-23. Power On Messages Status Messages and Description ROM Check Status System ROM being checked. RAM Check XX . XMB System RAM being checked. " RAM Check XX . XMB OK" is indicated Status when RAM check is completed.

  • Page 62: Printer Sharing

    Product Description EPL-N2000 Service Manual 1.4.5 Printer Sharing This section describes printer sharing. This printer has two methods of printer sharing: port fixed mode and auto sense mode. These modes are selected through SelecType. 1.4.5.1 Port Fixed Mode When the printer is in port fixed mode, only one interface port is active. Data from other port is ignored.

  • Page 63: Controller Ram Status

    1.4.7 EJL (Epson Job Control Language) This printer supports EPSON’s original EJL. This system allows users to access printer setting modes through commands sent by the computer. This mode is especially beneficial to users who operate printers through the network.

  • Page 64: Pgi (Photo And Graphics Improvement)

    Product Description EPL-N2000 Service Manual 1.4.9 PGI (Photo and Graphics Improvement ) PGI enhances the print quality of halftones and tone gradations, generally used in photographic and graphic images. Compared with conventional systems, which use one white or black dot as the minimum unit, PGI technology divides a single dot into 3 parts for a more precise image.

  • Page 65: Main Components

    EPL-N2000 Service Manual Product Description 1.5 MAIN COMPONENTS To simplify maintenance and repair, the main components of the EPL-N2000 have been designed for easy removal and replacement. The main components are: C207 MAIN board Main control board Control panel PWB-A board...

  • Page 66: Figure 1-11. C207 Main Board

    Product Description EPL-N2000 Service Manual 1.5.1 Main Controller (C207 MAIN Board) The C207 MAIN board is the main controller board for the EPL-N2000. Figure 1-11. C207 MAIN Board 1-54 Rev. A...

  • Page 67: Pwb-A Board

    EPL-N2000 Service Manual Product Description 1.5.2 PWB-A Board This unit is the engine control board. The engine is driven by the commands from the C207 MAIN board, including information from the sensors. Figure 1-12. PWB-A Board 1.5.3 PWB-E Board PWB-E board is the power supply board, which converts the AC line voltage into +24 and 5 VDC voltages.

  • Page 68: Pwb-F Board Unit

    Product Description EPL-N2000 Service Manual 1.5.4 PWB-F Board Unit The PWB-F is the high-voltage supply circuit board. It applies +24 VDC to the development bias, OPC drum charge bias, and image transfer bias. Never touch variable volumes VR1, VR2, VR3, VR5, VR6. They are for factory use only.

  • Page 69: Registration Roller Assembly

    EPL-N2000 Service Manual Product Description 1.5.6 Registration Roller Assembly This unit is used to prevent paper skew prior to transfer process. Paper reaches the register, pushes against the register, and then is pushed back to the correct position by its natural bounce.

  • Page 70: Print Head Unit (Optical Unit)

    Product Description EPL-N2000 Service Manual 1.5.8 Print Head Unit (Optical Unit) The Print Head unit consists of the laser diode (semi-conductor laser), the polygon motor which drives the polygon mirror for laser scanning, mirrors, and the lenses. The optical unit emits the laser beam onto the surface of the PC drum via the polygon mirror, mirrors, and lenses to produce a latent electrostatic image.

  • Page 71: Drive Unit

    EPL-N2000 Service Manual Product Description 1.5.10 Drive Unit The drive unit, which consists of the main motor and a number of transmitting gears, drives the paper transport rollers, Imaging cartridge, and fusing unit. The registration roller clutch, paper takeup solenoid, and interlock switch are installed inside the unit.

  • Page 72: Cassette Unit

    Product Description EPL-N2000 Service Manual 1.5.12 Cassette Unit The cassette unit is used to feed paper from a cassette into the printer. The paper empty sensor detects paper outs, and the paper near empty sensor detects the amount of paper remaining in the cassette.
  • Page 73 List of Tables Table 2-1. Printing Process for the EPL-N2000 ......2-1 Table 2-2. Paper Size Switches ........2-9 Table 2-3.

  • Page 74: Engine Operation

    EPL-N2000 Service Manual Operating Principles 2.1 Engine Operation This section describes the functions and operating principles of the EPL-N2000 engine. 2.1.1 Printing Process The whole printing process for this printer is divided into the seven stages described in Table 2-1.

  • Page 75: Charging Process

    Operating Principles EPL-N2000 Service Manual 2.1.1.1 Charging Process In the charging process, the high voltage unit applies negative DC voltage as the bias voltage to the rayon charging brush. Then, the PC drum is evenly charged with the negative electric charge applied from the charging brush.

  • Page 76: Exposure Process

    EPL-N2000 Service Manual Operating Principles 2.1.1.2 Exposure Process In the exposure process, the laser unit emits laser beams onto the PC drum surface to create an electrostatic latent image. There is a polygon mirror installed inside the laser unit. The mirror, which is rotated by the scanner motor, reflects laser beams from the laser diode toward the drum, on which the laser beams run, scanning from one edge to the other.

  • Page 77: Developing Process

    Operating Principles EPL-N2000 Service Manual 2.1.1.3 Developing Process Paper goes through this process to convert electrostatic image produced through the charging and exposure processes into visible image. It is accomplished using toner and 3 bias voltages; developingt bias, toner bias, and seal bias. Developing bias feeds toner evenly on the sleeve roller.

  • Page 78: Transfer Process

    EPL-N2000 Service Manual Operating Principles 2.1.1.4 Transfer Process In the transfer system, toner image created on the PC drum through the developing process is transferred to the paper. The roller transfer system is used for this printer. When the paper goes through the PC drum and the transfer roller, the roller provides the paper with positive voltage applied from the high voltage unit.

  • Page 79: Fusing Process

    Operating Principles EPL-N2000 Service Manual 2.1.1.5 Fusing Process The fusing unit permanently fixes the toner image, transferred from the PC drum, onto the paper. The fusing system this printer uses is the heat roller fusing system. The toner on the paper is melted by the upper fusing roller, which is heated by the heater lamp, then the toner is fixed by pressure from the paper traveling through the upper and lower fusing rollers.

  • Page 80: Cleaning Process

    EPL-N2000 Service Manual Operating Principles 2.1.1.6 Cleaning Process Toner remaining on the PC drum after transfer process is scraped off with the cleaning blade, placed in close contact with the surface of the PC drum. The toner that has been scraped off is collected back into the toner collection box inside the Imaging cartridge.

  • Page 81: Paper Feeding Mechanism

    Operating Principles EPL-N2000 Service Manual 2.1.2.2 Paper Feeding Mechanism Multi Purpose Tray The drive for the tray is transmitted to the push-down cam by way of the main motor, paper takeup clutch, and paper takeup roller. The paper takeup roller and push-down cam rotate once when the the paper takeup solenoid is energized.
  • Page 82 EPL-N2000 Service Manual Operating Principles Lower Cassette Tray The drive for the lower cassette tray is transmitted from the printer to the transport roller via the transmission gear, paper takeup clutch, and paper takeup roller. The lower paper cassette unit is controlled by the engine control board (PWB-A) through control board PWB-C. When the paper takeup solenoid (SL2) is energized, the paper takeup roller rotates once to pick up a sheet of paper, and the transport roller carries it to the PC drum.

  • Page 83: Controller Mechanism

    Operating Principles EPL-N2000 Service Manual 2.2 Controller Mechanism 2.2.1 Engine Control This section gives information on the engine controller, power supply board, and the high-voltage supply board. The engine is controlled by the PWB-A board. Figure 2-9 shows an engine controller connection diagram.

  • Page 84: Main Motor Mechanism Control

    EPL-N2000 Service Manual Operating Principles 2.2.1.1 Main Motor Mechanism and Control The main motor, which is located in the driving unit, transmits drive force to the rollers in the printer. A main motor malfunction is detected if any of following conditions is detected: The lock signal (CN5-1) goes OFF (LOW), and the OFF status continues for 1 second or more.

  • Page 85: Fusing Control

    Operating Principles EPL-N2000 Service Manual 2.2.1.3 Fusing Control The thermistor detects the surface temperature of the fusing roller and inputs the corresponding analog voltage to the PWB-A board. The heater lamp is turned ON and OFF by a signal output from PWB-A, based on the temperature detected by the thermistor.

  • Page 86: Sensor Control

    EPL-N2000 Service Manual Operating Principles 2.2.1.4 Sensor Control This section gives information on the sensors and how they are used to detect abnormal operations. Figure 2-13 shows the sensor layout. Figure 2-13. Sensor Locations See Table 2-3 for sensor descriptions.
  • Page 87 Operating Principles EPL-N2000 Service Manual 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 within approximately 1.6 seconds after the paper takeup roller has started rotating.

  • Page 88: Video Control Operation

    EPL-N2000 Service Manual Operating Principles 2.2.2 Video Control Operation 2.2.2.1 C207 MAIN Board Operation The video controller receives print data and converts it into corresponding image signal before transmitting them to the engine controller. Figure 2-14 shows a block diagram of C207 MAIN board.
  • Page 89 Operating Principles EPL-N2000 Service Manual Table 2-1 lists the main components of the C207 MAIN board and their functions. Table 2-1. Functions of Main Board Components Component Location Function MB86936 RISC CPU The CPU, which operates at 47.6 MHz manages the video controller operation.

  • Page 90: Video Controller Operating Principles

    EPL-N2000 Service Manual Operating Principles 2.2.2.2 Video Controller Operation Principles Print data and commands transmitted from the host computer through the network, parallel, or optional I/F are read and then stored in the input buffer in DRAM. If the buffer size (which varies depending on the SelecType setting) is increased, the host computer is released sooner.
  • Page 91 CHAPTER 3 DISASSEMBLY AND ASSEMBLY Table of Contents 3.1 General Description 3.1.1 Precautions for Disassembly /Assembly ......3-1 3.1.2 Tools .
  • Page 92 List of Tables Table 3-1. Tools..........3-1 Table 3-2.

  • Page 93: Precautions For Disassembly/Assembly

    EPL-N2000 Service Manual Disassembly and Assembly 3.1 GENERAL INFORMATION This chapter describes the disassembly/assembly procedures to be used for replacing the main assemblies of the EPL-N2000. 3.1.1 Precautions for Disassembly/Assembly Follow the precautions below when disassembling/assembling the printer. WARNING Disconnect the power cord before disassembling/assembling the printer.

  • Page 94: Specifications For Screws

    Disassembly and Assembly EPL-N2000 Service Manual 3.1.3 Specifications for Screws In the following sections, abbreviations are used for small parts such as screws and washers. Table 3-2 lists these abbreviations. Table 3-3 lists screw and washer types. CAUTION Be sure to use the correct type of screw since many different types of screws are used in this printer.

  • Page 95: Service Checks After Repair

    EPL-N2000 Service Manual Disassembly and Assembly 3.1.4 Service Checks after Repair Check the repaired unit using the list in Table 3-4 before returning the printer to the user to ensure that repair and shipping are accomplished appropriately. Table 3-4. Checks after Repair...

  • Page 96: Servicing Operations

    Disassembly and Assembly EPL-N2000 Service Manual 3.1.5 Servicing Operations This section describes the special service modes and combinations of switches used to enter each mode. The modes listed in this section are only to be operated by qualified service people for repair.
  • Page 97 EPL-N2000 Service Manual Disassembly and Assembly Use the 2 other modes listed below when you need information to analyzing the cause of a persistent error related to a firmware malfunction. Resetting of the CPU after a service call error has occurred.

  • Page 98: Disassembly And Assembly

    3.2 DISASSEMBLY AND ASSEMBLY This section describes and illustrates the procedures for disassembling and assembling the components of the EPL-N2000. The assembly procedures are not described, except for special notes where necessary, because assembly can be accomplished by performing disassembly in reverse order.

  • Page 99: Right Front Cover Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.1.5 Control Panel Removal Remove the FFC from the C207 MAIN Board. Remove 2 CCS screws (3 X 8) from the right and upper side of the panel. Remove the Control Panel. 3.2.1.6 Right Front Cover Removal Loosen 1 CCS screw (3 X 8) from the upper part of the right front cover.
  • Page 100 Disassembly and Assembly EPL-N2000 Service Manual Figure 3-2. Outer Cover Removal Rev. A...

  • Page 101: Fusing Unit Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.2 Fusing Unit Removal Remove 2 CCS screws ( 3 X 8 ) securing the fusing unit through the rear cover and rear panel. Disconnect the connectors from the fusing unit. ( 2 from the right , 1 from the left ) Remove 2 CCS screws (3 X 8) Securing the fusing unit.
  • Page 102 Disassembly and Assembly EPL-N2000 Service Manual Figure 3-5. Fusing Unit Removal (2) Assembling Note When reassembling the fusing unit, adjust the notch of the fusing unit with the shaft of the gear. 3-10 Rev. A...

  • Page 103: Pwb-E Board (Power Supply Board) Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.3 PWB-E Board (Power Supply Board) Removal Remove the outer covers. (Refer to Section 3.2.1.) Disconnect 5 connectors ( NC 1 to CN5) on the electrical board. Remove 6 CCS screws (3X 6) from the PWB-E Board.

  • Page 104: Main Controller Board Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.4 Main Controller Board Removal Refer to Figure 3-6. 3.2.4.1 Shield Frame Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove 15 CBS screws (3X6) securing the shield frame. Remove the shield frame.

  • Page 105: Rear Panel Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.5 Rear Panel Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the C207 MAIN Board. (Refer to Section 3.2.4 .) Remove the 6 CCS screws (3X6) securing the rear panel. Lift up the Rear Panel to release 2 hooks, then remove the panel. Be sure to disconnect the fan connector from the High Voltage Supply (PWB-F) Board Unit.

  • Page 106: Transfer Unit Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.6 Transfer Unit Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing unit. (Refer to Section 3.2.2.) Remove the C207 MAIN Board. (Refer to Section 3.2.4.) Remove the rear panel. (Refer to Section 3.2.5.) Remove 1 CCB screw (3X8) securing the transfer unit.
  • Page 107 EPL-N2000 Service Manual Disassembly and Assembly 3.2.7 High Voltage Supply (PWB-F) Board Unit Removal Refer to Figure 3-6. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the C207 MAIN Board. (Refer to Section 3.2.4.) Remove the Rear Panel.

  • Page 108: Printhead Unit Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.8 Printhead Unit Removal Figure 3-13. Printhead Unit Location 3.2.8.1 Harness Cover Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove 2 CCS screws (3X8) securing the harness cover. Figure 3-14. Harness Cover Removal 3-16 Rev.

  • Page 109: Printhead Unit Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.8.2 Printhead Unit Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the harness cover. (Refer to Section3.2.8.1.) Disconnect the connector (CN2) on the PWB-A Board. Remove 2 CB(S-P1) screws (3X20) and a CCS screw (3X12) securing the Printhead.

  • Page 110: Paper Empty Sensor Assembly Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.9 Paper Empty Sensor Assembly Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the harness cover. (Refer to Section 3.2.8.1.) Disconnect the connectors (CN3, CN6, CN9) on the PWB-A Board. Remove 3 CCS screws (3X6) securing the Paper Empty Sensor Assembly.
  • Page 111 EPL-N2000 Service Manual Disassembly and Assembly CAUTION Be careful handling the Paper Empty Sensor Assembly so the detection lever doesn’t break. Rev. A 3-19...

  • Page 112: Paper Takeup Roller Assembly Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.10 Paper Takeup Roller Assembly Removal Refer to Figure 3-16. Open the top cover. Remove the Fusing Unit. Release the hooks on both edges of the the Transport guide, then remove the Transport guide.

  • Page 113: Paper Takeup Roller Unit Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.11 Paper Takeup Roller Unit Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Transfer Unit. (Refer to Section 3.2.6.) Remove the High Voltage Supply Board.(Refer to Section 3.2.7.) Remove the Paper Empty Sensor Assembly (Refer to Section 3.2.9.)
  • Page 114 Disassembly and Assembly EPL-N2000 Service Manual Figure 3-21. Paper Takeup Roller Removal Assembly Note When reinstalling the Paper Takeup Roller Unit, fit the pins on the Paper Takeup Roller into the corresponding holes in the Drive Unit. CAUTION When installing or reinstalling the Paper Takeup Roller Unit, make sure that it won’t interfere with the contact points of the Imaging cartridge.

  • Page 115: Registration Roller Assembly

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.12 Registration Roller Assembly Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Transfer Unit. (Refer to Section 3.2.6.) Remove the High Voltage Supply Board. (Refer to Section 3.2.7.) Remove the Paper Empty Sensor Assembly.

  • Page 116: Pwb-A Board Unit Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.13 PWB-A Board Unit Removal Refer to Figure 3-6. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the C207 MAIN Board. (Refer to Section 3.2.4.) Remove 2 CCS screws (3X6) securing the PWB-A Board Unit.

  • Page 117: Drive Unit Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.14 Drive Unit Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2.) Remove the C207 MAIN Board. (Refer to Section 3.2.4.) Remove the Rear Panel. (Refer to Section 3.2.5.) Remove the Transfer Unit.
  • Page 118 Disassembly and Assembly EPL-N2000 Service Manual Figure 3-26. Drive Unit Gear Engagement 3-26 Rev. A...

  • Page 119: Heater Lamp Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.15 Heater Lamp Removal 3.2.15.1 Left Fusing Lamp Cover Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove 1 CCS screw (3X8) securing Left Fusing Lamp Cover.

  • Page 120: Heater Lamp Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.15.3 Heater Lamp Removal Release the heater lamp as shown (A) in Figure 3-30. Remove the Heater Lamp from the Fusing Unit. Figure 3-29. Unit Location (3) Figure 3-30. Heater Lamp Removal CAUTION Be careful not to break the tube lamp when handling it.
  • Page 121 EPL-N2000 Service Manual Disassembly and Assembly Assembly Note Note the direction in which the Heater Lamp is installed. Make sure that the lamp edge with the voltage mark on it is set to the right side of the Fusing Unit.

  • Page 122: Paper Exit Sensor Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.16 Paper Exit Sensor Removal Refer to Figure 3-29. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Disconnect the connector for the Paper Exit Sensor.

  • Page 123: Lower Fusing Roller Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.17 Lower Fusing Roller Removal Refer to Figure 3-29. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove 2 CCS screws (3X10) securing the rear fusing cover.

  • Page 124: Separator Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.18 Separator Removal Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Lower Fusing Roller. Remove the springs that secure the separators to the hooks.

  • Page 125: Thermistor Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.19 Thermistor Removal Refer to Figure 3-29. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Heater Lamp. (Refer to Section 3.2.15.) Remove the Lower Fusing Roller. (Refer to Section 3.2.17.) Remove 2 shoulder screws securing the front fusing cover.

  • Page 126: Thermostat Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.20 Thermostat Removal Refer to Figure 3-29. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Heater Lamp. (Refer to Section 3.2.15.) Remove the Lower Fusing Roller. (Refer to Section 3.2.17.) Remove the front fusing cover.

  • Page 127: Upper Fusing Roller Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.21 Upper Fusing Roller Removal Refer to Figure 3-29. Remove the outer covers. (Refer to Section 3.2.1.) Remove the Fusing Unit. (Refer to Section 3.2.2 .) Remove the Heater Lamp. (Refer to Section 3.2.15.) Remove the Lower Fusing Roller.

  • Page 128: Main Motor Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.22 Main Motor Removal Remove the Drive Unit. (Refer to Section 3.2.15.) Remove 3 CCB screws (3X8) securing the frame inside the Drive Unit. Remove 2 CCS screws (3X6) securing the right frame outside the Drive Unit.

  • Page 129: Interlock Switch Removal

    EPL-N2000 Service Manual Disassembly and Assembly 3.2.23 Interlock Switch Removal Remove the main motor. (Refer to Section 3.2.22.) Remove the E ring for the right frame. Remove 10 CCB screws (3X8) securing the right frame. Remove the right frame. Remove 2 CB(S-P1) screws securing the interlock switch, along with the bracket.

  • Page 130: Paper Takeup Solenoid Removal

    Disassembly and Assembly EPL-N2000 Service Manual 3.2.24 Paper Takeup Solenoid Removal Remove the right frame for the Drive Unit. (Refer to Section 3.2.23.) Remove CCB screw (3X8) securing the solenoid. Remove the solenoid. Figure 3-41. Paper Takeup Solenoid Removal (1) Figure 3-42.
  • Page 131 Chapter 4 Adjustment No adjustment is required in this product.
  • Page 132 CHAPTER 5 TROUBLESHOOTING Table of Contents 5.1 Overview 5.2 Self Diagnostic Function 5.3 Troubleshooting 5.3.1 Troubleshooting Abnormal Operations ......5-3 5.3.2 Troubleshooting Print Quality Problems .
  • Page 133 Troubleshooting EPL-N2000 Service Manual Rev. A...
  • Page 134 EPL-N2000 Service Manual Troubleshooting 5.1 OVERVIEW Types of errors that may produce a similar symptom in a page printer, such as poor print quality or abnormal operation, vary widely, making identification of failed parts and components more difficult. To overcome such problems for this printer, this section describes troubleshooting procedures using the printer’s built-in self-diagnostic function for easy and efficient repair.
  • Page 135 Troubleshooting EPL-N2000 Service Manual Table 5-1. Service Call Error (Continued) Error Type Error Code Description 1190 Cartridge access error 1200 EEPROM write error 1210 EEPROM write counter overflow 1300 Type B Interface error 1320 LocalTalk / Serial module error 1400...
  • Page 136 EPL-N2000 Service Manual Troubleshooting 5.3 TROUBLESHOOTING This section describes troubleshooting abnormal operations and print quality problems. 5.3.1 Troubleshooting Abnormal Operations When the printer detects an error, use Table 5-2 to identify the symptom and the reference table number. If a service call error has occurred, follow the steps below before taking an action.
  • Page 137 Troubleshooting EPL-N2000 Service Manual Symptom Reference Printer Condition Message Table The printer does not The main motor does not rotate when the printer is on. operate at all. Threrefore, the RAM check is not started. RAM check does not start. RAM check is not started when the printer is turned on.
  • Page 138 EPL-N2000 Service Manual Troubleshooting Table 5-3. The Printer Does Not Operate at All Step Cause Checkpoint Finding Solution Connector CN4 on the Is the cable from the PWB-E Board Connect the cable PWB-A board may not be properly connected? properly.
  • Page 139 Troubleshooting EPL-N2000 Service Manual Table 5-6. The LCD Displays "Paper Out" Step Cause Checkpoint Finding Solution The paper empty sensor Does the sensor operate smoothly? Reposition the actuator may be bad. Is the actuator in good condition? actuator or replace it.
  • Page 140 Does the printer recognize another Replace the IC be dead. legal card ? card. C207 MAIN board may Install an IC card that works with Replace the be bad. another EPL-N2000. Does the C207 MAIN printer recognize the card? board. Rev. A...
  • Page 141 Troubleshooting EPL-N2000 Service Manual Table 5-11. The LCD Displays "Service Req. E0003" Step Cause Checkpoint Finding Solution The connector may be Is CN2 on the PWB-E board Connect it connected improperly. properly connected ? properly. The thermistor may be Is operation OK when the Replace the bad.
  • Page 142 EPL-N2000 Service Manual Troubleshooting Table 5-14. The LCD Displays SERVICE REQ. E0006/0009 Step Cause Checkpoint Finding Solution The connectors may be Are the connectors on the PWB-A Connect them connected improperly. board properly connected? properly. The PWB-A board may Is operation OK when the PWB-A Replace the be bad.
  • Page 143 Troubleshooting EPL-N2000 Service Manual Table 5-19. The LCD Displays SERVICE REQ. C1120/1121/1122/1123 Step Cause Checkpoint Finding Solution The PROG ROM may be Is operation OK when the PROG Replace the ROM bad. ROM is replaced? (IC29/30). C1120: Replace IC30 If ICs 1, 2, 3, and...
  • Page 144 EPL-N2000 Service Manual Troubleshooting 5.3.2 Troubleshooting Print Quality Problems This section describes how to isolate print quality problems from their possible causes and remedy them, as shown in Table 5-24. Table 5-24. Print Quality Problems Symptom Possible Cause Solution Black/white lines (vertical)
  • Page 145 Troubleshooting EPL-N2000 Service Manual 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 Quality Problems Symptom Possible Cause Solution No image printed High development bias Replace the high-voltage unit (Blank /completely black ) (PWB-E).
  • Page 146 CHAPTER 6 MAINTENANCE Table of Contents 6.1 Maintenance 6.1.1 User Maintenance ......... . . 6-1 6.1.2 Service Maintenance .
  • Page 147 8,000 to 10,000 sheets). 6.1.2 Service Maintenance The EPSON EPL-N2000 does not require any replacement of units at specified intervals. It is, however, recommended that specific units be replaced after periods determined by the total number of sheets printed. This is indispensable in preventing abnormal operations, such as multi-sheet feeds, paper jams, and fusing malfunctions, which can be often caused by worn out units.
  • Page 148 Appendix Table of Contents A.1 Connector Pin Assignments ........A-1 A.1.1 Engine Controller Board (PWB-A Board) .
  • Page 149 Figure A-16. C207 MAIN Board (CPU) ....... A-32 Figure A-17. C207 MAIN Board (ROM/ROM-SIMM) ....A-33 Figure A-18.
  • Page 150 EPL-N2000 Service Manual Appendix A.1 CONNECTOR PIN ASSIGNMENTS Figures A-1 illustrates the interconnection of the main controller board. Figure A-1. Main Controller Diagram Rev. A...
  • Page 151 Appendix EPL-N2000 Service Manual Table A-1. PWB-A Board Connector Specifications Reference Connector Description Pins Tables C207 MAIN board Printhead unit Paper near empty sensor (PNE1) Power supply board (PWB-E board) Main motor Toner empty sensor (TE1) Paper empty sensor (PE1) —...
  • Page 152 EPL-N2000 Service Manual Appendix Table A-2. C207 MAIN Board Connector Specifications Reference Connector Description Pins Tables Video interface (to PWB-A board) 1-11 (Chapter 1) IEEE 1284 interface (B connector) 1-13 (Chapter 1) IEEE 1284 interface (C connector) A-15 Type-B interface...
  • Page 153 Appendix EPL-N2000 Service Manual A.1.1 Engine Controller Board (PWB-A Board) Table A-3 PWB-A, C207 MAIN Board CN1 (Video I/F) Signal Name Description +5 V (Logic power source) +5 V (Logic power source) RESET Engine initialize signal PRRDY Engine print enable signal...
  • Page 154 EPL-N2000 Service Manual Appendix Table A-6 PWB-A CN4 (PWB-E) Signal Name Description PW_FAN Power source fan drive signal HEATER Heater lamp drive signal Ground +24V +24 V Ground Ground +5 V +5 V Table A-7 PWB-A CN5 (Main Motor) Signal Name...
  • Page 155 Appendix EPL-N2000 Service Manual Table A-10 PWB-A CN9 (Imaging Cartridge Fuse) Signal Name Description Fuse detection/ fuse blow power source I/C_NEW New cartridge detection / fuse blow signal Table A-11 PWB-A CN10 (PWB-F) Signal Name Description +5 V FU_FAN Fan motor drive...
  • Page 156 EPL-N2000 Service Manual Appendix Table A-14 PWB-A CN13 (Paper Exit Sensor, Thermistor, Registration Clutch)) Signal Name Description ANODE PC3 anode Ground +PC3 Paper exit sensor detection signal THERMISTOR Thermistor detection sensor +5 V +24V +24 V (clutch) R_CLUTCH Registration clutch drive signal A.1.2 Video Controller Board (C207 MAIN Board)
  • Page 157 Appendix EPL-N2000 Service Manual Table A-16 C207 MAIN Board CN5 (I/O Bus) Signal Name Description PCLK System clock for 85230-10 Reset signal Bidirectional data bus 0 Bidirectional data bus 1 Bidirectional data bus 2 Bidirectional data bus 3 Bidirectional data bus 4...
  • Page 158 EPL-N2000 Service Manual Appendix Table A-17 C207 MAIN Board CN7 (CPU Bus) Signal Name Description +5 V +5 V Address bit 26 Address bit 27 Address bit 28 Address bit 29 Address bit 30 Address bit 31 ASI10 Not used...
  • Page 159 Appendix EPL-N2000 Service Manual Table A-18 C207 MAIN Board CN9, CN10 (RAM-SIMM) Signal Name Description Data bit 0 DQ16 Data bit 16 Data bit 1 DQ17 Data bit 17 Data bit 2 DQ18 Data bit 18 Data bit 3 DQ19...
  • Page 160 EPL-N2000 Service Manual Appendix Table A-18 C207 MAIN Board CN9, CN10 (RAM-SIMM) (continued) Signal Name Description DQ27 Data bit 27 DQ12 Data bit 12 DQ28 Data bit 28 +5 VDC DQ29 Data bit 29 DQ13 Data bit 13 DQ30 Data bit 30...
  • Page 161 Appendix EPL-N2000 Service Manual Table A-19 C207 MAIN Board CN11 (ROM Bus) Signal Name Description Power source Power source Power source Power source Data bit 0 Data bit 16 Data bit 1 Data bit 17 Data bit 2 Data bit 18...
  • Page 162 EPL-N2000 Service Manual Appendix Table A-19 C207 MAIN Board CN11 (ROM Bus) (continued) Signal Name Description Address bit 7 Address bit 8 Address bit 9 Address bit 10 Address bit 11 Address bit 12 Address bit 13 Address bit 14...
  • Page 163 Appendix EPL-N2000 Service Manual Table A-20 C207 MAIN Board CN12 (ROM-SIMM) Signal Name Description Power source Data bit 0 DQ16 Data bit 16 Data bit 1 DQ17 Data bit 17 Data bit 2 DQ18 Data bit 18 Data bit 3...
  • Page 164 EPL-N2000 Service Manual Appendix Table A-20 C207 MAIN Board CN12 (ROM-SIMM) (continued) Signal Name Description DQ27 Data bit 27 DQ12 Data bit 12 DQ28 Data bit 28 Power source DQ29 Data bit 29 DQ13 Data bit 13 DQ30 Data bit 30...
  • Page 165 Appendix EPL-N2000 Service Manual Table A-21 C207 MAIN Board CN14 (IC Card Slot) Signal Name Description Data bit 3 Data bit 4 Data bit 5 Data bit 6 Data bit 7 Chip select 1 Address bit 10 Output enable Address bit 11...
  • Page 166 EPL-N2000 Service Manual Appendix Table A-21 C207 MAIN Board CN14 (IC Card Slot) (continued) Signal Name Description Address bit 25 Not used RESET Reset signal WAIT Not used Not used Card select BVD2 Not used BVD1 Not used Data bit 8...
  • Page 167 Appendix EPL-N2000 Service Manual A.2 Exploded Diagrams Figure A-2. Housing A-18 Rev. A...
  • Page 168 EPL-N2000 Service Manual Appendix Figure A-3. Frames Rev. A A-19...
  • Page 169 Appendix EPL-N2000 Service Manual Fifure A-4. Paper Takeup Section (1) A-20 Rev. A...
  • Page 170 EPL-N2000 Service Manual Appendix Figure A-5. Paper Takeup Section (2) Rev. A A-21...
  • Page 171 Appendix EPL-N2000 Service Manual Figure A-6. Drive Unit A-22 Rev. A...
  • Page 172 EPL-N2000 Service Manual Appendix Fifure A-7. Transfer Unit Rev. A A-23...
  • Page 173 Appendix EPL-N2000 Service Manual Figure A-8. Fusing Unit A-24 Rev. A...
  • Page 174 EPL-N2000 Service Manual Appendix Figure A-9. Paper Cassette Unit Rev. A A-25...
  • Page 175 Appendix EPL-N2000 Service Manual Figure A-10. Lower Paper Cassette (Standard) A-26 Rev. A...
  • Page 176 EPL-N2000 Service Manual Appendix Figure A-11. Lower Paper Cassette (Optional) Rev. A A-27...
  • Page 177 Appendix EPL-N2000 Service Manual Figure A-12. Optional Duplex Unit A-28 Rev. A...
  • Page 178 EPL-N2000 Service Manual Appendix A.3 CIRCUIT BOARD COMPONENT LAYOUT Figure A-13. C202 MAIN Board Component Layout (Front) Rev. A A-29...
  • Page 179 Appendix EPL-N2000 Service Manual Figure A-14. C207 MAIN Board Component Layout (Rear) A-30 Rev. A...
  • Page 180 EPL-N2000 Service Manual Appendix Figure A-15. C207 MAIN Board PROG Component Layout Rev. A A-31...
  • Page 181 Appendix EPL-N2000 Service Manual CPU_BUS A.4 CIRCUIT DIAGRAMS OUT 3 LM3940IT-3.3 1u/50V 33u/ A[0..27] DO[0..31] D[0..31] BE[0..3] IO_VDD 33/4 D1 110 IO_VDD D2 109 CS[0..5] IO_VDD ROM Module IO_VDD 33/4 IC39 D[0..31] IO_VDD D[0..31] SLAM RM54 IO_VDD D6 102 A[0..27] IO_VDD A[0..27]...
  • Page 182 Appendix EPL-N2000 Service Manual CN12 ROM_SIMM 0.1U A[0..27] A[0..27] D[0..31] D[0..31] EEPX PJ13 K_WRL F/M_Sel11 RESETX F/M_Sel12 IC19 CS2X WW/2Byte 0.1U R122 74F139 IC17A CS0X IC18A SIDE 74LS04 74F32 CS1X R112 IC40 IC42F C144 0.1U IC17D 74F04 C145 0.22U 74F32...
  • Page 183 Appendix EPL-N2000 Service Manual D[0..31] D[0..31] MA[0..10] MA[0..10] RAS0X RAS1X CAS_LLX CAS_LHX CAS_HLX CAS_HHX RAS2X RAS3X RAS4X RAS5X Only use for 4M DRAM S_MA00 C133 0.1U PJ10 S_MA01 PJ11 S_MA90 CN10 PJ12 S_MA91 IC12 DQ10 DQ10 DQ11 DQ11 DQ12 DQ12...
  • Page 184 Appendix EPL-N2000 Service Manual EPRDYX PRRDYX ETBSYX STSX SRCLK CMDX CPRDYX PRINTX CTBSYX DB[0..7] DB[0..7] IC28 AB[0..7] IC33 AB[0..7] PDATA0 PDATA1 PDATA2 IC43 PDATA3 PDATA4 IC18B PDATA5 PDATA6 IC18C 74LS04 RM39 C146 RM42 PDATA7 1.2K/4 0.1U 1.2K/4 74LS04 9 1.2K/4 1.2K/4...
  • Page 185 Appendix EPL-N2000 Service Manual TODX C134 100P DB[0..7] DB[0..7] C135 100P IC37 C136 100P RM47 3.3K/4 CPUD0 TEST5/EIFEN CPUD1 TEST6/STS C137 100P CPUD2 TEST7/ETBSY CPUD3 TEST8/PRRDY C138 100P CPUD4 TEST9/EPRDY 3.3K CPUD5 RAMD6/CTBSY C139 100P CPUD6 RAMD5/PRFD CPUD7 RAMD4/SRCLK AB[0..7] AB[0..7]...
  • Page 186 Appendix EPL-N2000 Service Manual A[0..27] CN13 A[0..27] N-BUS RM19 33/4 RM18 33/4 RM20 33/4 RM21 33/4 IC20 IC26 NAD0 148 NAD1 149 NAD2 150 NAD3 NAD4 NAD5 153 NAD6 154 RM27 NAD7 NAD8 157 SA10 NAD9 158 SA11 NAD10 159...
  • Page 187 Appendix EPL-N2000 Service Manual PJ10 PJ17 PJ18 PJ11 PJ16 D[0..31] A[0..23] PJ15 IC socket PJ13 PJ14 PJ19 4M Flash(IC3,4,5,6)/Fujitsu PJ1: Open ,PJ10,11: Open PJ2: Open ,R2: Short PJ3: Open ,R3: Short PJ7: Open ,PJ14: Short 4M Flash(IC3,4,5,6)/Intel PJ1: Open ,PJ10,11: Short...
  • Page 188 EPSON...

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