Epson 890N - FX B/W Dot-matrix Printer Service Manual
  1. Manuals
  2. Brands
  3. Epson Manuals
  4. Printer
  5. 890N - FX B/W Dot-matrix Printer
  6. Service manual

Epson 890N - FX B/W Dot-matrix Printer Service Manual

Serial impact dot-matrix printer
Hide thumbs Also See for 890N - FX B/W Dot-matrix Printer:
Table of Contents

Advertisement

Quick Links

See also: User Manual , Product Information Manual

SERVICE MANUAL

Serial Impact Dot Matrix Printer
EPSON FX-890/2190
®
SEDM02003

Advertisement

Table of Contents
loading

Related Manuals for Epson 890N - FX B/W Dot-matrix Printer

Summary of Contents for Epson 890N - FX B/W Dot-matrix Printer

  • Page 1: Service Manual

    SERVICE MANUAL Serial Impact Dot Matrix Printer EPSON FX-890/2190 ® SEDM02003...
  • Page 2 SEIKO EPSON CORPORATION. All effort 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 MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

  • Page 4: About This Manual

    Provides preventive maintenance procedures and the achieved through a previous action. lists of Epson-approved lubricants and adhesives required for servicing the product. Indicates an operating or maintenance procedure, practice APPENDIX...
  • Page 5 Revision Status Revision Date of Issue Description June 20, 2003 Formal first release Revision up: Chapter-3: Error Correction ("3.2.12 Fatal Error" on page 63) August 21, 2003 Chapter-4: Error Correction ("4.2.3 C524MAIN Board" on page 74) Appendix: The part list and the exploded diagram for the FX-2190 are added. ("7.3 Exploded Diagrams"...

  • Page 6: Table Of Contents

    EPSON FX-890/2190 Revision B Table of Contents Chapter 1 PRODUCT DESCRIPTIONS Chapter 2 Operating Principles 1.1 Features ....................... 9 2.1 Overview ......................44 2.1.1 Printer Mechanism ..................45 1.2 Interface ......................23 2.1.1.1 Printhead .................... 45 1.2.1 Parallel interface (Forward channel) ............23 2.1.1.2 Paper Feed Mechanism ..............
  • Page 7 EPSON FX-890/2190 Revision B 3.2.11 Electrical Noise ..................62 5.2.1 Platen Gap Adjustment ................95 3.2.12 Fatal Error ....................63 5.3 Adjustment Program ..................97 3.3 Troubleshooting for Individual Units ............. 64 5.3.1 Preparation ....................97 3.3.1 Main Component Checking Point ............64 5.3.1.1 System Requirement .................

  • Page 8: Chapter 1 Product Descriptions

    C H A P T E R PRODUCT DESCRIPTIONS...

  • Page 9: Features

    EPSON FX-890/2190 Revision B 1.1 Features PRINTING SPEED EPSON FX-890/2190 is a small-foot 18-pin serial impact dot matrix printer. Table 1-2. Printing Speed (cps) and Printable Columns Printable Columns Printing Speed Character HARDWARE SPECIFICATIONS Printing Mode Pitch FX-890 FX-2190 Normal...

  • Page 10: Paper Specifications

    EPSON FX-890/2190 Revision B FEEDING METHOD PAPER SPECIFICATIONS Table 1-3. Cut Sheet (Single sheet, Not multi part) FX-890 Friction feed : Front, Rear Front Entry Rear Entry Push tractor feed : Front, Rear High-Capacity FX-890 Manual Manual Single-Bin CSF Push & Pull tractor feed : Front, Rear Min.
  • Page 11 EPSON FX-890/2190 Revision B Table 1-4. Cut Sheet (Single sheet, Not multi part) FX-2190 Table 1-5. Cut Sheet (Multi part) FX-890 Front Entry Rear Entry Front Entry Rear Entry High-Capacity Manual / High-Capacity FX-2190 Manual Manual Single-Bin CSF FX-890 Manual CSF / Single-Bin CSF Min.
  • Page 12 EPSON FX-890/2190 Revision B Table 1-6. Cut Sheet (Multi part) FX-2190 Table 1-7. Card Front Entry Rear Entry Front Entry Rear Entry FX-890 High-Capacity Single-Bin Manual / High-Capacity CSF FX-2190 Manual & Manual Manual / Single-Bin CSF FX-2190 Min. Max.
  • Page 13 EPSON FX-890/2190 Revision B Table 1-8. Envelope Table 1-9. Handling possible cut sheets of fixed forms (single sheet/multi-part) with FX-890 Front Entry Rear Entry FX-890 High-Capacity Single-Bin Size & Manual Manual Envelope FX-2190 Direction Min. Max. Min. Max. Min. Max.
  • Page 14 EPSON FX-890/2190 Revision B Table 1-11. Continuous paper (Single sheet and Multi Part) FX-890 Table 1-12. Continuous paper (Single sheet and Multi Part) FX-1190 Bottom/Front/Rear Entry Bottom/Front/Rear Entry FX-890 FX-2190 Minimum Maximum Minimum Maximum Width (inch) (10) Width (inch) (16) (mm) 101.6...
  • Page 15 EPSON FX-890/2190 Revision B Table 1-13. Labels (FX-890) Table 1-14. Labels (FX-2190) Bottom/Front Entry Rear Entry Bottom/Front Entry Rear Entry FX-890 FX-2190 Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Label size See Figure 1-1 below. ----- Label size See Figure 1-1 below.
  • Page 16 Bit map font EPSON Draft : 10 cpi, 12 cpi, 15 cpi EPSON Roman : 10 cpi, 12 cpi, 15 cpi, Proportional EPSON Sans Serif : 10 cpi, 12 cpi, 15 cpi, Proportional EPSON OCR-B : 10 cpi * Bar code fonts:...

  • Page 17: Electrical Specification

    EPSON FX-890/2190 Revision B ELECTRICAL SPECIFICATION Table 1-18. UPS Version Table 1-16. 120V Version Rated voltage range AC 100 to AC240V Rated voltage AC 120 V Input voltage range AC 90 to 264V Input voltage range AC 103.5 to 132 V...
  • Page 18 EPSON FX-890/2190 Revision B Color Black ACOUSTIC NOISE Ribbon dimensions 13 mm (W) x 17 M (L) Endless Level: 55 dB(A) (ISO 7779 pattern) Ribbon life Approximately 7.5 million characters (Draft 10 cpi, 14 dots / character) ENVIRONMENTAL CONDITIONS Cartridge dimensions...
  • Page 19 EPSON FX-890/2190 Revision B CE MARKING EXPENDABLES & OPTIONS Table 1-19. Expendables & Option 230 V version & UPS version Expendables Code No. Low Voltage Directive 73/23/EEC: EN60950 FX-890 FX-2190 S015329 S015327 EMC Directive 89/336/EEC: EN55022 class B Ribbon cartridge (Black)
  • Page 20 EPSON FX-890/2190 Revision B PRINTABLE AREA Table 1-20. Printable Area for Cut Sheet Single Sheet / Multi Part Cut sheets FX-890 FX-2190 PW (Width) Refer to “PAPER Refer to “PAPER SPECIFICATIONS” Table 1-3 on SPECIFICATIONS” Table 1-4 on page 10 for single sheet or...
  • Page 21 EPSON FX-890/2190 Revision B Envelope Continuous paper Printable Area Printable Area Figure 1-3. Printable Area for Envelope Table 1-21. Printable Area for Envelope Envelope Printable Area PW (Width) Figure 1-4. Printable Area for Continuous Paper Refer to “PAPER SPECIFICATIONS” Table 1-8 on page 13...
  • Page 22 EPSON FX-890/2190 Revision B Label Roll paper 1.2mm or more Printable area Printable area 6.35mm Figure 1-6. Printable Area for Roll Paper or more Table 1-24. Printable Area for Roll Paper Roll Paper Figure 1-5. Printable Area for Label PW (Width) Refer to “PAPER SPECIFICATIONS”...

  • Page 23: Interface

    EPSON FX-890/2190 Revision B 1.2 Interface Table 1-25. Connector pin assignment (Forward channel) (continued) Return Signal Function description This printer provides bi-directional 8-bit parallel interface, USB interface and Type-B Name Out* optional interface slot as standard. This signal’s high level means that the printer is in a state of paper-out error.
  • Page 24 EPSON FX-890/2190 Revision B Data transmission timing BUSY signal is active (high level) under any of the following conditions: In the process of receiving data DATA Input buffer full data byte n+1 data byte n t hold -INT signal active (low level)

  • Page 25: Parallel Interface (Reverse Channel)

    EPSON FX-890/2190 Revision B 1.2.2 Parallel interface (Reverse channel) FX-2190 Specifications When IEEE1284.4 is enabled, Transmission mode : IEEE-1284 nibble mode [00H][4EH] MFG:EPSON; Adaptable connector: 57-30360 (Amphenol) or equivalent CMD:ESCP9,PRPII9,BDC,D4; Synchronization : Refer to the IEEE-1284 specification MDL:FX-2190; Handshaking : Refer to the IEEE-1284 specification CLS:PRINTER;...

  • Page 26: Usb Interface

    EPSON FX-890/2190 Revision B 1.2.3 USB Interface Table 1-27. Connector pin assignment (Reverse channel) Return Specifications Pin No. Signal Name Function description Out* Standard: Based on “Universal Serial Bus Specifications HostClk Host clock signal. Revision 1.1” DATA1 Parallel input data to the printer.

  • Page 27: Optional Interface

    EPSON FX-890/2190 Revision B 1.2.4 Optional Interface 1.2.5 Type-B Interface communication specification Type-B optional interface cards are available. Reply for Optional command (*: Reply for Type-B I/F Level 2 device: not described in user's manual) Table 1-29. FX-890 Table 1-31. Reply for Optional command...

  • Page 28: Interface Selection

    EPSON FX-890/2190 Revision B 1.2.6 Interface selection Main command Table 1-32. Main command The printer has 3 interfaces; the parallel interface, USB interface and Type-B optional Option command interface. These interfaces are selected manually by Default Setting or selected Command name...

  • Page 29: Ieee1284.4 Protocol

    EPSON FX-890/2190 Revision B 1.2.7 IEEE1284.4 protocol The packet protocol described by IEEE1284.4 is supported on the parallel I/F. Two function modes of IEEE1284.4 protocol, “Off” and “Auto”, are available and one of them is selected according to the value of Default setting. (See Section 1.3.5.

  • Page 30: Operation

    EPSON FX-890/2190 Revision B 1.3 Operation 1.3.2 Switches 1.3.2.1 Operation in Normal Mode This section describes the operations on this printer. In the normal mode, pressing panel switches executes the following functions. 1.3.1 Control panel Table 1-33. Normal Mode The control panel of this printer is equipped with 6 switches and 10 LEDs, which are located as shown below.

  • Page 31: Operations At Power-On

    EPSON FX-890/2190 Revision B 1.3.3 Indicators ( LEDs ) 1.3.2.2 Operations at Power-on Holding down the specified switch (switches) while turning on the power to the printer This printer has the following indicators to indicate its current condition, as shown in enables the special functions as listed below.
  • Page 32 EPSON FX-890/2190 Revision B *2. Paper Out ( Red ) *5. Pitch ( Green ) The “Paper Out” LED is on when the printer is in the “paper out” status, and it Three LEDs display the status of Pitch selection.

  • Page 33: Buzzer

    EPSON FX-890/2190 Revision B 1.3.4 Buzzer 1.3.5 Default Setting This printer has the buzzer to indicate its current condition with the following You can change some parameters that the printer refers to at printer initialization. indications. 1.3.5.1 Setting Method The symbols used in the table above represent the following: Refer to the following flowchart for default setting.

  • Page 34: Setting Items

    EPSON FX-890/2190 Revision B 1.3.5.2 Setting Items Table 1-38. Setting Values Available in Default Setting Mode (continued) Item Setting / Value Setting values available for default setting and factory settings are as shown in the table Buzzer OFF, ON below:...

  • Page 35: Eeprom Clear Function

    EPSON FX-890/2190 Revision B 1.3.6 EEPROM Clear Function Table 1-39. Cleared Items and Values on EEPROM (Standard Model) (continued) You can return some parameters into the factory settings to perform panel operation Item Value easily. Pressing Load/Eject & LF/FF & Pause switches at the same time while...

  • Page 36: Bi-D Adjustment

    EPSON FX-890/2190 Revision B 1.3.7 Bi-D Adjustment Refer to the following flowchart for the Bi-D adjustment. start Turning the printer on while pressing Pause switch. The guide to adjust Bi-d. alignment in this mode is printed and first alignment pattern is printed.

  • Page 37: Dimensions And Weight

    EPSON FX-890/2190 Revision B 1.4 Dimensions and Weight FX-2190 Dimensions: 589 mm (W) x 350mm (D) x 167.5mm (H) * Weight: Approximately TBD kg Physical specifications * This measure excludes “the protrusions.” FX-890 Dimensions: 414 mm (W) x 350 mm (D) x 167.5 mm (H) * Weight: Approximately 7.6 kg...
  • Page 38 EPSON FX-890/2190 Revision B Physical specifications including High capacity cut sheet feeder (Bin1) FX-2190 Dimensions: 589mm (W) x 434mm (D) x 378mm (H) * FX-890 Weight: Approximately TBD kg Dimensions: 414 mm (W) x 434 mm (D) x 378 mm (H) * Weight: Approximately 8.9 kg...
  • Page 39 EPSON FX-890/2190 Revision B Physical specifications including Single bin cut sheet feeder (Bin2) FX-2190 Dimensions: 589mm (W) x 445mm (D) x 386mm (H) * FX-890 Weight: Approximately TBD kg Dimensions: 414 mm (W) x 445 mm (D) x 386 mm (H) * Weight: Approximately 8.2 kg...
  • Page 40 EPSON FX-890/2190 Revision B Physical specifications including High capacity cut sheet feeder (Bin) & Single FX-2190 bin cut sheet feeder (Bin2) Dimensions: 589mm (W) x 564mm (D) x 408mm (H) * Weight: Approximately TBD kg FX-890 Dimensions: 414 mm (W) x 564 mm (D) x 408 mm (H) * * This measure excludes “the protrusions.”...

  • Page 41: Fx-880T+ Mode

    EPSON FX-890/2190 Revision B 1.4.1 FX-880T+ Mode FX-880T+ (=ML320T) mode is different from “current FX-890” mode in the following features: Supports commands similar to ML320T This function may be used only on the models intended for EAI Adds some default setting items similar to ML320T market.

  • Page 42: Default Setting Items

    EPSON FX-890/2190 Revision B 1.4.1.3 Default setting items 1.4.1.5 Action of the printer Interface Table 1-40. Setting Values Available for Default Setting Mode FX-880T+ mode does not have Device ID. Only Parallel I/F is possible use. (Can not use USB I/F and Optional Type-B I/F)

  • Page 43: Chapter 2 Operating Principles

    C H A P T E R OPERATING PRINCIPLES...

  • Page 44: Overview

    EPSON FX-890/2190 Revision B 2.1 Overview C524 PSB/PSE/PSH Board The C524 PSB/PSE/PSH power supply board consists of Transformer, Switching FET, This printer is divided into several main components for easy removal and repair. The Regulator IC, Diode bridge, Fuse, Photo-coupler, and so on.

  • Page 45: Printer Mechanism

    EPSON FX-890/2190 Revision B 2.1.1 Printer Mechanism 2.1.1.2 Paper Feed Mechanism The paper feed mechanism picks up paper and transports it to the printhead, then ejects This printer mechanism consists of Printhead, Paper feed mechanism, Carriage the paper step by step or continuously driven by the PF motor. PF motor drives the movement mechanism, Tractor feed mechanism, Platen gap adjustment mechanism, paper feed mechanism gears and the platen roller.

  • Page 46: Ribbon Feed Mechanism

    EPSON FX-890/2190 Revision B 2.1.1.6 Ribbon Feed Mechanism 2.1.1.7 Sensors The CR motor drives the ribbon feed mechanism via the timing belt. The ribbon feed Table below lists the sensors of this printer. mechanism has the sun and planetary gear system. No matter the carriage unit is driven left and right, the ink ribbon is driven in one direction.

  • Page 47: Circuit Operation

    EPSON FX-890/2190 Revision B 2.1.2 Circuit Operation Table 2-2. Major Elements on MAIN Board (continued) Elements Location Function 2.1.2.1 C524 MAIN Board Use: Various buffers, work areas Device: MSM51V18165D The C524 MAIN board is the control circuit board of this printer. This board consists...
  • Page 48 EPSON FX-890/2190 Revision B Table 2-2. Major Elements on MAIN Board (continued) Table 2-2. Major Elements on MAIN Board (continued) Elements Location Function Elements Location Function ± Specification: Level 2 Drive voltage: 42 V Current consumption 0.5 A max. Drive IC: SLA7024M (Sanken) SSI is supported.
  • Page 49 EPSON FX-890/2190 Revision B Table 2-2. Major Elements on MAIN Board (continued) Elements Location Function Driver element: DTC124X Control: Controlled by output port (P_CTRL) of ASIC Energy save (ESA Register setting VE) circuit 0: 42 V power voltage rising (Power ON)

  • Page 50: C524 Psb/Pse/Psh Power Supply Circuit

    EPSON FX-890/2190 Revision B 2.1.2.2 C524 PSB/PSE/PSH Power Supply Circuit INPUT SPECIFICATIONS This printer can be powered by one of the following three power supply boards: the C524PSB (120 V) board, the C524PSE (230 V) board, or the C524PSH (Universal) Table 2-4.
  • Page 51 EPSON FX-890/2190 Revision B Table 2-4. Input Specifications PROTECTIVE FUNCTIONS Power Supply Unit C524 PSB C524 PSE C524 PSH Name (100-120V Spec) (220-240V Spec) (100-240V Spec) Table 2-6. Protective Functions Special output holding 120 ms or more Item Output 1...

  • Page 52: Chapter 3 Troubleshooting

    C H A P T E R TROUBLESHOOTING...

  • Page 53: Overview

    Before starting disassembly and assembly work, read and understand thoroughly the contents of 3.1.3 “Preliminary Checks In addition, the User's Manual for EPSON EPSON FX-890/2190 describes detailed (p.54)” steps to be taken for recovery from typical errors. When you disassemble the printer, pull the power cable and the Broken line arrow: interface cable out of the plug socket beforehand.

  • Page 54: Preliminary Checks

    EPSON FX-890/2190 Revision B 3.1.3 Preliminary Checks Make sure that gears of the printer mechanism do not rub each other excessively. Confirm that all gears are engaged properly. Before starting troubleshooting, be sure to verify that the following conditions are all...

  • Page 55: Troubleshooting Based On Symptoms

    EPSON FX-890/2190 Revision B 3.2 Troubleshooting Based on Symptoms 3.2.1 Printer fails to operate when power is turned on Table 3-3. Printer fails to operate when power is turned on You can identify the defective component from the symptom displayed. Table 3-2...

  • Page 56: No Led On Control Panel Lights Up Even With Power Turned On

    EPSON FX-890/2190 Revision B 3.2.2 No LED on Control Panel lights up even with power Table 3-4. No LED on Control Panel lights up turned on Step Action and Question Power Supply Board Replace the Table 3-4. No LED on Control Panel lights up...

  • Page 57: Abnormal Paper Feeding

    EPSON FX-890/2190 Revision B 3.2.4 Abnormal paper feeding Table 3-6. Abnormal paper feeding Step Action and Question Table 3-6. Abnormal paper feeding Harness of sensor Step Action and Question Replace the defective harness of the following Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)

  • Page 58: Printing Is Faulty During Self-Test, But Carriage Operation Is Normal

    EPSON FX-890/2190 Revision B 3.2.5 Printing is faulty during self-test, but carriage Table 3-7. Printing faulty during self-test, but carriage operation normal operation is normal Step Action and Question Defective PF Motor Table 3-7. Printing faulty during self-test, but carriage operation normal Replace the PF Replace the PF Motor with a new one.

  • Page 59: Abnormal Operation Of Control Panel

    EPSON FX-890/2190 Revision B 3.2.6 Abnormal operation of Control Panel 3.2.7 Abnormal on-line operation (normal self-printing, though) Table 3-8. Abnormal operation of Control Panel Table 3-9. Abnormal on-line operation (normal self-printing, though) Step Action and Question Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)

  • Page 60: Abnormal Operation Of Ribbon

    EPSON FX-890/2190 Revision B 3.2.8 Abnormal operation of ribbon Table 3-10. Abnormal operation of ribbon Step Action and Question Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Ribbon Cartridge • Timing Belt •...

  • Page 61: Abnormal Operation Of Carriage Unit

    EPSON FX-890/2190 Revision B 3.2.9 Abnormal operation of Carriage Unit Table 3-11. Abnormal operation of Carriage Unit (continued) Step Action and Question Table 3-11. Abnormal operation of Carriage Unit Defective harness of HP Detector Replace the Step Action and Question...

  • Page 62: Faulty Print

    EPSON FX-890/2190 Revision B 3.2.10 Faulty print 3.2.11 Electrical Noise Table 3-12. Faulty print Table 3-13. Troubleshooting for Electrical Noise Step Action and Question Step Action and Question Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) •...

  • Page 63: Fatal Error

    EPSON FX-890/2190 Revision B 3.2.12 Fatal Error Table 3-14. Troubleshooting for Fatal Error (continued) Action and Question Table 3-14. Troubleshooting for Fatal Error Abnormal Printhead Temperature Action and Question (Head Open Error : value = 3AH) Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) The printer actually checks the connection between the •...

  • Page 64: Troubleshooting For Individual Units

    EPSON FX-890/2190 Revision B 3.3 Troubleshooting for Individual Units Table 3-16. 3.3.1 Main Component Checking Point Common Common Corresponding Wires Corresponding Wires Line Line The following components can be checked with a simple measurement tool, such as a 1, 7, 13 2, 5, 11 multi-meter, easily.

  • Page 65: Chapter 4 Disassembly And Assembly

    C H A P T E R DISASSEMBLY AND ASSEMBLY...

  • Page 66: Overview

    4.1.2 Tools and Instruments The table below lists the tools and the instruments required for disassembling, This section describes procedures for disassembling and assembling EPSON FX-890/ assembling or adjusting the printer. Use only tools that meet these specifications. 2190. Unless otherwise specified, disassembled units or components can be re- Table 4-1.

  • Page 67: Service Check After Repair

    EPSON FX-890/2190 Revision B 4.1.3 Service Check After Repair Table 4-2. Repair Status Check List (continued) Category Component Item to Check Status After completing repair of the product, use the check list shown below to check the Operation Checked, OK...

  • Page 68: Abbreviations For Small Parts

    EPSON FX-890/2190 Revision B 4.1.3.1 Abbreviations for Small Parts Table 4-3. List of Screws Used Name and specification Shape The table below lists the abbreviations used in this manual for small parts, such as screws and washers. PRINTER MECHANISM Table 4-3. List of Screws Used...

  • Page 69: Main Components Disassembly

    EPSON FX-890/2190 Revision B 4.2 Main Components Disassembly This section provides the disassembly procedures. The basic order for disassembly is shown in the flowchart below. The exploded diagrams are also provided in the “Exploded Diagrams” (page 114). Refer to them to see how components are engaged with each other if necessary.

  • Page 70: Pre-Disassembly Procedures

    EPSON FX-890/2190 Revision B 4.2.1 Pre-disassembly Procedures Paper Eject Cover Remove the Paper Guide Assembly, top cover, front cover, paper eject cover, knob and tractor unit. Paper Guide Assembly. (See Figure 4-2) Top cover.(See Figure 4-2) Knob. (See Figure 4-2) Paper eject cover.
  • Page 71 EPSON FX-890/2190 Revision B Remove the paper eject cover and the tractor unit by pushing and releasing the hooks at both sides. When remounting them, be sure to snap these hooks on the projecting parts. Figure 4-5. Tractor Unit Removal...

  • Page 72: Upper Housing

    EPSON FX-890/2190 Revision B 4.2.2 Upper Housing CBS Screws (3x8) x2 Tightening Torque: 1.08 ±0.1 N.m Perform Pre-Disassembly. (p.70) CBS Screw (3x8) Tightening Torque: 0.58-0.78 N.m Remove 3 CBS (M3x8) screws securing the upper housing to the lower case. (See Figure 4-6) Set the release lever to the friction feed side.
  • Page 73 EPSON FX-890/2190 Revision B Open the upper housing from the front side, and remove it. When assembling the upper housing, put the catching holes in the upper housing on the hooks at the rear side of the lower case at first, then close the housing. (See Figure 4-7) Mount the Panel assembly onto the upper housing before installing the upper housing assembly.

  • Page 74: C524Main Board

    EPSON FX-890/2190 Revision B 4.2.3 C524MAIN Board CBS Screws (3x6) x5 Tightening Torque: 0.58-0.78 N.m The C524MAIN board has the mechanical drive power supply CBP Screws (3x12) x2 Tightening Torque voltage (+42V, Vp) management circuit and an electrical : 0.78-0.98 N.m...
  • Page 75 EPSON FX-890/2190 Revision B Remove the 2 CBS (M3x12) screws securing the COVER,CONNECTOR,UPPER or the optional Type-B I/F Board to the I/F GROUNDING PLATE. (See Figure 4-10) CBP Screws (3x12) x6 Tightening Torque: 0.9±0.1 N.m Remove the 6 CBP (M3x12) screws securing the C524MAIN Board to the lower case.

  • Page 76: C524Psb/Pse/Psh Board

    EPSON FX-890/2190 Revision B 4.2.4 C524PSB/PSE/PSH Board Perform Pre-Disassembly. (p.70) Remove the Upper Housing. (p.72) CBP Screws (3x12) x2 Remove the shield cover. (See Figure 4-8) Tightening Torque: 0.88±0.1 N.m Disconnect the harness from the connector CN14 on the C524MAIN board.

  • Page 77: Printer Mechanism Disassembly

    EPSON FX-890/2190 Revision B 4.3 Printer Mechanism Disassembly Ribbon Mask 4.3.1 Printhead CBS C(P2) Remove the top cover.(See Figure 4-2) Screws (3x8) x2 Tightening Torque Remove the 2 CBS C (P2) (M3x8) screws securing the Printhead to the Carriage : 0.7±0.1 N.m Assembly.(See Figure 4-12)

  • Page 78: Hp (Home Position) Detector

    EPSON FX-890/2190 Revision B 4.3.2 HP (Home Position) Detector Hook Remove the top cover. (See Figure 4-2) Release the hook attaching the HP detector to the Printer Mechanism, and remove it. (See Figure 4-13) Harness Disconnect the harness of the detector from the detector connector.

  • Page 79: Platen

    EPSON FX-890/2190 Revision B 4.3.3 Platen CBS Screws (3x8) x2 Perform Pre-Disassembly. (p.70) Tightening Torque: 0.9±0.1N.m Bushing, 8, Left Remove the 2 CBS (M3x8) screws securing the COVER,PLATEN. (See Figure 4-14) Rotating the teeth of the Bushing, 8, Right and Bushing 8 Left forward, disengage them from the Left/Right Side Frame.

  • Page 80: Printer Mechanism

    EPSON FX-890/2190 Revision B 4.3.4 Printer Mechanism Perform Pre-Disassembly. (p.70) CBB (W13, M3x14) Screws x4 Remove the Upper Housing. (p.72) Tightening Torque: 1.1±0.1N.m Remove the shield cover.(See Figure 4-8) Disconnect all the connectors connected to the C524MAIN board. (See Figure 4-9)

  • Page 81: Cr Motor

    EPSON FX-890/2190 Revision B 4.3.5 CR Motor Remove the Printer Mechanism. (p.80) Release the tension spring. (See Figure 4-17) Disengage the TIMING BELT,CR from the CR Motor pinion and hang it on the Hanger. CR Motor TIMING BELT,CR Tension Spring Hanger Figure 4-17.
  • Page 82 EPSON FX-890/2190 Revision B Remove the 2 SHAFT,MOUNT,CR (M3x12) screws securing the CR Motor assembly to the FRAME,SUB,RIGHT, and remove the CR Motor. (See Figure 4-18) Remove the 2 CB (M3x6) screws securing the CR Motor to the MOUNTING CR Motor PLATE,MOTOR,CR, and remove the CR Motor.

  • Page 83: Pf Motor

    EPSON FX-890/2190 Revision B 4.3.6 PF Motor Remove the Printer Mechanism. (p.80) Release the motor harness from the Printer Mechanism. (See Figure 4-19) CBS Screw (3x10) Locate the release lever (Lever, Release) in the forefront position (Tractor Tightening Torque: 0.9±0.1N.m Position).

  • Page 84: Pf Gear Train

    EPSON FX-890/2190 Revision B 4.3.7 PF Gear Train Remove the Printer Mechanism. (p.80) Remove the PF Motor. (p.83) Locate the release lever (Lever, Release) in the forefront position (Tractor Position). Remove the head FFC from the FRAME,SUB,RIGHT of the Printer Mechanism.
  • Page 85 EPSON FX-890/2190 Revision B Lubrication is necessary at two points. (For details, refer to “Lubrication” (p.100) in Chapter 6.) Pay attention to the gear engagement position of the LEVER,RELEASE. For assembly, follow the following procedure: SPUR GEAR,21 SPUR GEAR,34.5 1. Make certain that the SHAFT,RELEASE is in the Tractor position.

  • Page 86: Pg (Platen Gap) Detector

    EPSON FX-890/2190 Revision B 4.3.8 PG (Platen Gap) Detector 4.3.9 Release Detector Remove the Printer Mechanism. (p.80) Remove the Printer Mechanism. (p.80) Release the 2 clips attaching the PG detector to the LEFT FRAME in the Printer Release the 2 clips attaching the Release detector to the FRAME,SUB,RIGHT in Mechanism, and remove the detector.

  • Page 87: Front Pe (Paper End) Detector

    EPSON FX-890/2190 Revision B 4.3.10 Front PE (Paper End) Detector 4.3.11 Rear PE Detector Remove the Printer Mechanism. (p.80) Remove the Printer Mechanism. (p.80) Release the 2 clips attaching the front PE detector to the Rear Paper Guide Hold the Printer Mechanism horizontally.

  • Page 88: Carriage Assembly

    EPSON FX-890/2190 Revision B 4.3.12 Carriage Assembly Remove the Printer Mechanism. (p.80) Remove the Head FFC. (See page 77) Remove the Platen. (p.79) Remove the CR Motor. (p.81) BUSHING, PARALLEL, ADJUST Remove the hexagon nut (M4) and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever.
  • Page 89 EPSON FX-890/2190 Revision B Move the Carriage Assembly to the right end, and remove it from the rack of the FRAME,FRONT with the SHAFT,CR,GUIDE. (See Figure 4-27) Release the TIMING BELT from the 2 clips at the bottom of the Carriage Assembly.

  • Page 90: Rear Paper Guide Assembly

    EPSON FX-890/2190 Revision B 4.3.13 Rear Paper Guide Assembly Remove the Printer Mechanism. (p.80) CBS Screws (3x6) x3 Tightening Torque: 0.9±0.1N.m Remove the Platen. (p.79) Remove the hexagon nut and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever.
  • Page 91 EPSON FX-890/2190 Revision B 10. Release the cables from the HOLDER,CABLE on the RIGHT FRAME, and remove the HOLDER,CABLE from the RIGHT FRAME. FRAME,REAR 11. Remove the CBS (M3x8) screw securing the FRAME,REAR to the RIGHT FRAME, and remove the Rear Paper Guide Assembly. (See Figure 4-30) 12.

  • Page 92: Ribbon Drive (Rd) Assembly

    EPSON FX-890/2190 Revision B 4.3.14 Ribbon Drive (RD) Assembly CBS C(P2) Screw (3x8) Remove the Printer Mechanism. (p.80) Tightening Torque: 0.9±0.1N.m Remove the Platen. (p.79) Remove the hexagon nut and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever.

  • Page 93: Chapter 5 Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 94: Adjustment Overview

    EPSON FX-890/2190 Revision B 5.1 Adjustment Overview 5.1.2 Adjustment Tools Table 5-2 below shows the tools required for each adjustment. 5.1.1 Required Adjustment Table 5-2. Adjustment Tools This section describes the adjustments required after specified parts are removed or Adjustment Required Tool replaced.

  • Page 95: Platen Gap Adjustment

    EPSON FX-890/2190 Revision B 5.2 Adjusting and Resetting the Printer 5.2.1 Platen Gap Adjustment When the SHAFT,CR,GUIDE or BUSHING,PARALLEL,ADJUST is rotated or reinstalled, or printing is too faint or stained, the Platen Gap adjustment must be Ribbon Mask performed by the following procedure: Remove the Upper Housing.
  • Page 96 EPSON FX-890/2190 Revision B 11. Put an adjustment gauge between the Printhead and the PLATEN vertically, and judge and adjust the platen gap by referring to Table 5-3 below. Normal Mode Copy Mode For adjustment, turn the SHAFT,CR,GUIDE toward the PLATEN (widen) or toward the front (lessen).

  • Page 97: Adjustment Program

    EPSON FX-890/2190 Revision B 5.3 Adjustment Program Sequential Adjustment Mode This mode is specifically designed to assist repair engineer to preform all necessary adjustment/setting item in proper order. A wizard like menu help There are various adjustment/settings that required after performing repair on the unit,...
  • Page 98 C H A P T E R MAINTENANCE...

  • Page 99: Overview

    EPSON FX-890/2190 Revision B 6.1 Overview 6.1.1 Preventive Maintenance Preventive maintenance is important to keep the printer in the best condition and to prevent potential troubles from occurring. If necessary, use denatured alcohol to clean the exterior cases. Use a vacuum cleaner to remove dust and paper debris accumulated in the printer.

  • Page 100: Lubrication

    Lubrication Point (Amount of (Reference Page) Application) Therefore, EPSON has tested and analyzed various types of oil and grease extensively, and found the oil and grease listed below most applicable to the printer. SPUR GEAR, 34.5 (shaft hole) G-26 Figure PF Gear Train (p.84)
  • Page 101 EPSON FX-890/2190 Revision B SPUR GEAR, 34.5 G-26 G-26 Figure 6-1. Lubrication Point (PF Gear Train) G-26 G-26 SPUR GEAR, 21 G-26 Ratchet,RD Figure 6-2. Lubricating Point (RD Assy 1) Figure 6-3. Lubricating Point (RD Assy 2) Maintenance Lubrication...
  • Page 102 EPSON FX-890/2190 Revision B G-26 Combination Gear, 8.19 Shaft Release G-26 G-26 Spur Gear, 25.5 Combination Gear, 7.5,15 G-26 Figure 6-6. Lubricating Points (Shaft Release) Figure 6-4. Lubricating Points (RD Assy 3) O-14 Direction of Leaf Spring G-26 Holder, PF, Shaft...
  • Page 103 EPSON FX-890/2190 Revision B G-26 Roller, PF, Drive PG Adjusting holes (7 holes) Figure 6-8. Lubricating Points (LEFT FRAME) Maintenance Lubrication...
  • Page 104 C H A P T E R APPENDIX...

  • Page 105: Connector Summary

    EPSON FX-890/2190 Revision B 7.1 Connector Summary The primary components of the printer are connected as shown below; Table 7-1. Connector Summary Board Connector No. Description Parallel I/F Type-B I/F (Option) USB I/F PG Detector Front PE Detector Rear PE Detector...
  • Page 106 EPSON FX-890/2190 Revision B Parallel I/F (CN1) HP Detector(CN8) Refer to “Parallel interface (Forward channel)” (page 23). Table 7-5. Connector Pin Assignment - CN8 Type-B I/F (CN2) Pin No. Signal Name Function Refer to “Type-B Interface communication specification” (page 27).
  • Page 107 EPSON FX-890/2190 Revision B Printhead (CN15, CN16) F side (CN16: lower connector) R side (CN15: upper connector) Table 7-10. Connector Pin Assignment - CN16 Pin No. Signal Name Function Table 7-9. Connector Pin Assignment - CN15 – – Not used Pin No.

  • Page 108: Electric Circuit Diagrams

    EPSON FX-890/2190 Revision B 7.2 Electric Circuit Diagrams The following pages show circuit diagrams below. C524MAIN Circuit Diagram C524PANEL Circuit Diagram C524PSB Circuit Diagram C524PSE Circuit Diagram C524PSH Circuit Diagram Appendix Electric Circuit Diagrams...

  • Page 114: Exploded Diagrams

    EPSON FX-890/2190 Revision B 7.3 Exploded Diagrams See the following pages for the exploded diagrams below: Exploded Diagram for FX-890 (1) Exploded Diagram for FX-890 (2) Exploded Diagram for FX-890 (3) Exploded Diagram for FX-890 (4) Exploded Diagram for FX-2190 (1)
  • Page 115 F OR F X-890 NO.1 R ev.01 C 524-C AS E -01...
  • Page 116 F OR F X-890 NO.2 R ev.01 C 524-E LE C -01...
  • Page 117 F OR F X-890 NO.3 R ev.01 C 524-ME C H-01...
  • Page 118 F OR F X-890 NO.4 R ev.01 C 524_P AC K _01...
  • Page 119 The parts to which no reference number is assigned will not be available as after-sale service parts. FOR FX-2190 NO.1 Rev.01 C526_CASE_01...
  • Page 120 FOR FX-2190 NO.2 Rev.01 C526_ELEC_01...
  • Page 121 524 521 594 598 529 524 580 The parts to which no reference number is assigned will not be available as after-sale service parts. FOR FX-2190 NO.3 Rev.01 C526_MECH_01...

  • Page 122: Parts List

    EPSON FX-890/2190 Revision B 7.4 Parts List Table 7-11. Parts List - FX-890 DESCRIPTION REF# C.B.S. SCREW(B300204311) FX-890 "GROUNDING PLATE,I/F" Table 7-11. Parts List - FX-890 "GROUNDING PLATE,I/F,UPPER" DESCRIPTION REF# "GROUNDING PLATE,BOTTOM" NON FIG "SOFTWARE CD-ROM,EAI" "HOLDER,CABLE" NON FIG USER'S GUIDE "SHEET,PANEL"...
  • Page 123 EPSON FX-890/2190 Revision B Table 7-11. Parts List - FX-890 Table 7-11. Parts List - FX-890 DESCRIPTION DESCRIPTION REF# REF# CN20 CONNECTOR CONNECTOR SWITCH;B CONNECTOR "PAPER GUIDE ASSY.,REAR" CONNECTOR "SHAFT,RELEASE" CONNECTOR "HARNESS,PE,FRONT" CONNECTOR(X600440310) "HARNESS,PE,REAR" CONNECTOR(X600440120) "HARNESS,RE" CONNECTOR(X600440120) "DETECTOR,PE,FRONT,S" DIODE "DETECTOR ASSY., REAR"...
  • Page 124 EPSON FX-890/2190 Revision B Table 7-11. Parts List - FX-890 Table 7-11. Parts List - FX-890 DESCRIPTION DESCRIPTION REF# REF# RETAINING RING(B150300911) "MOUNTING PLATE,MOTOR,CR" "COVER, PAPER EJECT" "HOLDER,RIBBON MASK" "FRAME,PAPER EJECT;EPAG" OIL PAD(F334005140) "LEAF SPRING,PAPER EJECT,DOUBLE" "LEVER,RELEASE;EDGB" "SPUR GEAR,15" "CAM,CLUTCH,TRACTOR"...
  • Page 125 EPSON FX-890/2190 Revision B Table 7-11. Parts List - FX-890 Table 7-11. Parts List - FX-890 DESCRIPTION DESCRIPTION REF# REF# "SPUR GEAR,36" "HOUSING ASSY.,PANEL" RETAINING RING(B160101412) NON FIG OIL O-14 "LEVER,DETECTOR,PE,REAR" NON FIG GREASE G-26 (40GR) "LEVER,PE,SUPPORT" "TORSION SPRING,0.26" "PLAIN WASHER,3X0.5X8,F/ZB"...
  • Page 126 EPSON FX-890/2190 Revision B Table 7-12. Parts List - FX-2190 FX-2190 Ref. No. Description Table 7-12. Parts List - FX-2190 FAN ASSY. Ref. No. Description C.B.S. SCREW(B300204211) NON FIG "SOFTWARE CD-ROM,EAI" "C.B.P-TITE SCREW,3X12,F/ZN" NON FIG USER’S GUIDE C.B.S. SCREW(B300204211) "HOUSING ASSY.,LOWER"...
  • Page 127 EPSON FX-890/2190 Revision B Table 7-12. Parts List - FX-2190 Table 7-12. Parts List - FX-2190 Ref. No. Description Ref. No. Description CN16 CONNECTOR "FRAME ASSY.,RIGHT" CONNECTOR "FRAME ASSY.,LEFT" CN20 CONNECTOR "MOTOR ASSY.,CR" CONNECTOR RD ASSY. CONNECTOR BASE RUBBER CONNECTOR "MOTOR,PF"...
  • Page 128 EPSON FX-890/2190 Revision B Table 7-12. Parts List - FX-2190 Table 7-12. Parts List - FX-2190 Ref. No. Description Ref. No. Description "TRACTOR,RIGHT;EDGB" "PAPER GUIDE ASSY.,SUPPORT" "SHAFT,TR,DRIVE" "GUIDE,PAPER LOAD" "SHAFT,TR,GUIDE" "LEVER,RELEASE,TRANSMISSION;W" "FRAME,TR,LEFT;EPAG" "FRAME,FRONT" "FRAME,TR,RIGHT;EPAG" "FRAME,SUB,RIGHT" "LEVER,TR,LEFT;EDGB" "SHAFT,CR,GUIDE" "LEVER,TR,RIGHT;EDGB" "BUSHING,PARALLEL,ADJUST" PAPER SUPPORT "LEVER,GAP,ADJUST"...
  • Page 129 EPSON FX-890/2190 Revision B Table 7-12. Parts List - FX-2190 Ref. No. Description C.B.SCREW(B010303311) "PLANE WASHER,8.2X0.5X12,L/NA" C.B.SCREW(B010303511) C.B.SCREW(B010303411) "SHAFT,MOUNT,CR" "HOLDER,CABLE,HEAD" "SHEET,RELEASE,CAP" "SPUR GEAR,36" "LEVER,DETECTOR,PE,REAR" "LEVER,PE,SUPPORT" "TORSION SPRING,0.26" HEAD KIT ASP "EXTENSION SPRING,16.45" "HOLDER,PULLEY DRIVEN" NON FIG OIL O-14 NON FIG...

This manual is also suitable for:

Fx-890Fx-2190

Table of Contents