Epson 890N Service Manual

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

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  • Epson 890N | Service Manual - Page 1
    SERVICE MANUAL Serial Impact Dot Matrix Printer EPSON FX-890/2190 ® SEDM02003
  • Epson 890N | Service Manual - Page 2
    Notice † All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. † All effort have been made to ensure
  • Epson 890N | Service Manual - Page 3
    INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. 4. When disassembling or assembling a product, be sure to wear gloves to avoid injuries from metal parts with sharp edges. WARNING 1. REPAIRS ON EPSON
  • Epson 890N | Service Manual - Page 4
    , maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. Manual Configuration This manual consists of six chapters and Appendix
  • Epson 890N | Service Manual - Page 5
    Description Formal first release Revision up: Chapter-3: Error Correction ("3.2.12 Fatal Error" on page 63) 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" on page 114
  • Epson 890N | Service Manual - Page 6
    35 1.3.7 Bi-D Adjustment 36 1.4 Dimensions and Weight 37 1.4.1 FX-880T+ Mode 41 1.4.1.1 Setting of FX-880T+ mode 41 1.4.1.2 Supported commands 41 1.4.1.3 Default setting items 42 1.4.1.4 Printer defaults 42 1.4.1.5 Action of the printer 42 Chapter 2 Operating Principles 2.1 Overview ...44
  • Epson 890N | Service Manual - Page 7
    EPSON FX-890/2190 3.2.11 Electrical Noise 62 3.2.12 Fatal Error 63 3.3 Troubleshooting for Individual Units 64 3.3.1 Main Component Checking Point 64 Chapter 4 Disassembly and Assembly 4.1 Overview ...66 4.1.1 Disassembly Precautions 66 4.1.2 Tools and Instruments 66 4.1.3 Service Check After
  • Epson 890N | Service Manual - Page 8
    PRODUCT DESCRIPTIONS CHAPTER 1
  • Epson 890N | Service Manual - Page 9
    EPSON FX-890/2190 is a small-foot 18-pin serial impact dot matrix printer. HARDWARE SPECIFICATIONS † Print method † Number of pins † Print pin arrangement † Print pin diameter † Color † Print Direction : Impact Dot Matrix : 18 pins : 9 pins x 2 files : 0.29 mm (0.0114 inch) : Black ink ribbon
  • Epson 890N | Service Manual - Page 10
    EPSON FX-890/2190 FEEDING METHOD † Friction feed † Push tractor feed † Push & Pull tractor feed † Pull Table 1-3. Cut Sheet (Single sheet, Not multi part) FX-890 FX-890 Width (inch) (mm) Front Entry Manual Min. (3.9) 100 Max. (10.1) 257 Manual Min. (3.9) 100 Max. (10.1) 257 Rear
  • Epson 890N | Service Manual - Page 11
    EPSON FX-890/2190 Revision B Table 1-4. Cut Sheet (Single sheet, Not multi part) FX-2190 FX-2190 Width (inch) (mm) Front Entry Manual Min. (3.9) 100 Max. (16.5) 420 Manual Min. (3.9) 100 Max. (16.5) 420 Rear Entry High-Capacity CSF Min. Max. (3.9) (16.5) 100 420 Single-Bin CSF Min
  • Epson 890N | Service Manual - Page 12
    EPSON FX-890/2190 Revision B Width Table 1-6. Cut Sheet (Multi part) FX-2190 FX-2190 Front Entry Manual Minimum Maximum Rear Entry Manual / High-Capacity CSF , be sure to align their left edge with the matchmark of the sheet guide. 3: When Paper size is A6 and the sheet is to be set horizontal
  • Epson 890N | Service Manual - Page 13
    EPSON FX-890/2190 Revision B Table 1-8. Envelope FX-890 Front Entry & Manual FX-2190 Min. Max. Envelope Width (inch) ----- (No.6) (mm) Length (inch) ----- (mm) Manual align their left edge with the matchmark of the sheet guide. 4: Envelope should be inserted from rear entrance only.
  • Epson 890N | Service Manual - Page 14
    EPSON FX-890/2190 Table 1-11. Continuous paper (Single sheet and Multi Part) FX-890 FX-890 Bottom/Front/Rear Entry Minimum Maximum Width (inch) (4) (10) (mm) 101.6 254 Length (one page) (inch) (mm) (4) 101.6 (22) 558.8 Copies 1 original + 5 copies * Total thickness
  • Epson 890N | Service Manual - Page 15
    EPSON FX-890/2190 Revision B FX-890 Label size Table 1-13. Labels (FX-890) Bottom/Front Entry Minimum Maximum See Figure 1-1 below. Rear Entry pull out paper from backward. 5: No label paper should be left on the printer when the printer is not used. 6: Don't print on the base sheet of labels. 7:
  • Epson 890N | Service Manual - Page 16
    EPSON FX-890/2190 Width FX-890& FX-2190 Length Diameter EPSON OCR-B : 10 cpi * † Bar code fonts: EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, UPC-E, Code 39, Code 128, POSTNET, Coda bar (NW-7)*, Industrial 2 of 5*, Matrix 2 of 5* NOTE: "*": These fonts are not described in user's manual
  • Epson 890N | Service Manual - Page 17
    EPSON FX-890/2190 ELECTRICAL SPECIFICATION Rated voltage Input voltage range Rated ( between AC line and chassis) Note "*" : Upon a lapse of 5 minutes under the following conditions, the printer enters sleep mode: • Not in Pause, not in error status • There is no data in input buffer. PRODUCT
  • Epson 890N | Service Manual - Page 18
    EPSON FX-890/2190 part paper, envelope, label or roll paper RELIABILITY Total print volume (MVBF) MTBF Print head life 52 million lines (except print head) 20000 POH (25% Duty) 400 million strokes/wire (Approx. 400 million characters (Draft 10 cpi, 14 dots/ character)) RIBBON CARTRIDGE
  • Epson 890N | Service Manual - Page 19
    (IEEE-1284 nibble mode supported) „ USB (ver1.1) I/F „ Type-B I/F level 2 (Option) CONTROL CODE „ ESC/P „ IBM PPDS emulation Revision B EXPENDABLES & OPTIONS Table 1-19. Expendables & Option Expendables Ribbon cartridge (Black) Code No. FX-890 FX-2190 S015329 S015327 Options High
  • Epson 890N | Service Manual - Page 20
    EPSON FX-890/2190 PRINTABLE AREA † Cut sheets Printable Area Revision B Table 1-20. Printable Area for Cut Sheet Single Sheet / Multi Part FX-890 FX-2190 PW (Width) PL (Length) Refer to "PAPER Refer to "PAPER SPECIFICATIONS" Table 1-3 on SPECIFICATIONS" Table 1-4 on page 10 for single
  • Epson 890N | Service Manual - Page 21
    EPSON FX-890/2190 † Envelope † Continuous paper PW LM Revision B RM Printable Area Figure 1-4. Printable Area for Continuous Paper Table 1-22. Printable Area for Continuous Paper Continuous Paper FX-890 FX-2190 PW (Width) PL (Length) Refer to "PAPER SPECIFICATIONS" Table 1-11 on page
  • Epson 890N | Service Manual - Page 22
    EPSON FX-890/2190 † Label 1.2mm or more PW TM LM RM PL Printable area BM 6.35mm or more Figure 1-5. Printable Area for Label Table 1-23. Printable Area for Label Continuous Paper FX-890 FX-2190 PW (Width) PL (Length) Refer to "PAPER SPECIFICATIONS" Table 1-13 on page 15 Refer to "
  • Epson 890N | Service Manual - Page 23
    EPSON FX-890/2190 1.2 Interface This printer provides bi-directional 8-bit parallel interface, USB interface and Input data is latched at falling edge of the signal. 2 DATA1 20 In Parallel input data to the printer. bit 0: LSB 3 DATA2 21 In bit 1 4 DATA3 22 In bit 2 5 DATA4 23 In
  • Epson 890N | Service Manual - Page 24
    EPSON FX-890/2190 † Data transmission timing DATA -STROBE BUSY -ACKNLG data byte n t hold t setup In the adjustment mode „ In the default-setting mode † -ERROR signal is active (low level) under any of the following conditions: „ In the condition of the printer hardware error (fatal error) „ In
  • Epson 890N | Service Manual - Page 25
    ; MDL:FX-890; CLS:PRINTER; DES:EPSON[SP]FX-890; When IEEE1284.4 is disabled, [00H][49H] MFG:EPSON; CMD:ESCP9,PRPII9,BDC; MDL:FX-890; CLS:PRINTER; DES:EPSON[SP]FX-890; „ FX-2190 When IEEE1284.4 is enabled, [00H][4EH] MFG:EPSON; CMD:ESCP9,PRPII9,BDC,D4; MDL:FX-2190; CLS:PRINTER; DES:EPSON[SP]FX-2190
  • Epson 890N | Service Manual - Page 26
    EPSON FX-890/2190 Table 1-27. Connector pin assignment (Reverse channel) Pin No. Signal Name Return GND Pin IN/ Out* Function description 1 HostClk 19 In Host clock signal. 2 DATA1 20 In Parallel input data to the printer. bit 0: LSB 3 DATA2 21 In bit 1 4 DATA3 22 In bit 2 5
  • Epson 890N | Service Manual - Page 27
    EPSON FX-890/2190 1.2.4 Optional Interface Type-B optional interface cards are available. Table 1-29. FX-890 Reply message ESC/P Main-Type MT9p, PW80c110cpi, PRG(Wxxxxx)rev, AP500ma IBM PPDS MT9p, PW80c110cpi, PRG(Wxxxxx)rev, AP500ma Product-Name FX-890 FX-890 Emulation-Type ESCP9, PRPII9
  • Epson 890N | Service Manual - Page 28
    EPSON FX-890/2190 † Main command Table 1-32. Main command Option command number Command name Sending Timing • Init signal on the std. parallel 01h Start Software Reset • Type-B I/F Option command : 01h • Panel Reset 02h Send Option Type 04h Send Name Data • Cold start • Deciding the
  • Epson 890N | Service Manual - Page 29
    EPSON FX-890/2190 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. Default
  • Epson 890N | Service Manual - Page 30
    EPSON FX-890/2190 1.3 Operation This section describes the operations on this printer. 1.3.1 Control panel The control panel of this printer is draft quality. Pitch • Selects pitch. Reset (Font & Pitch) • Resets the printer. Menu • Enter or exit the default setting mode. (Pitch & Tear Off/Bin
  • Epson 890N | Service Manual - Page 31
    EPSON FX-890/2190 Revision B 1.3.2.2 Operations at Power-on Holding down the specified switch (switches) while turning on the power to the printer enables the special functions as listed below. Table 1-34. At Power-On Switches Load/Eject NLQ self test Function LF/FF Draft self test Load/
  • Epson 890N | Service Manual - Page 32
    EPSON FX-890/2190 Revision B *2. Paper Out ( Red ) „ The "Paper Out" LED is on when the printer is in the "paper out" status, and it blinks when the printer has developed a paper eject error, and it is off when the printer is not in such status. „ See *6 for LED indication when a locked switch is
  • Epson 890N | Service Manual - Page 33
    EPSON FX-890/2190 1.3.4 Buzzer This printer has the buzzer to indicate its current condition with the Finish? YES Press Menu (Pitch & Tear Off/Bin) button. * * The printer will exit from the default setting mode after storing the setting into non-volatile memory. END Figure 1-14. Flowchart for
  • Epson 890N | Service Manual - Page 34
    EPSON FX-890/2190 Revision B 1.3.5.2 Setting Items Setting values available for default setting and factory settings are as shown in the table below: Table 1-38. Setting Values Available in Default Setting Mode Item Setting / Value *2 Page length for front tractor 3inch, 3.5inch, 4inch, 5.
  • Epson 890N | Service Manual - Page 35
    EPSON FX-890/2190 1.3.6 EEPROM Clear Function You can return some parameters into the factory settings to perform panel operation easily. Pressing Load/Eject & LF/FF & Pause switches at the same time while turning on the printer returns the default settings into the factory settings: Table 1-39.
  • Epson 890N | Service Manual - Page 36
    EPSON FX-890/2190 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. [ Step A ] Select most closely alignment
  • Epson 890N | Service Manual - Page 37
    EPSON FX-890/2190 1.4 Dimensions and Weight † Physical specifications „ FX-890 Dimensions: Weight: Appearance: 414 mm (W) x 350 mm (D) x 167.5 mm (H) * Approximately 7.6 kg See the figures below. * This measure excludes "the protrusions." Revision B „ FX-2190 Dimensions: Weight: 589 mm (W) x
  • Epson 890N | Service Manual - Page 38
    EPSON FX-890/2190 † Physical specifications including High capacity cut sheet feeder (Bin1) „ FX-890 Dimensions: Weight: Appearance: 414 mm (W) x 434 mm (D) x 378 mm (H) * Approximately 8.9 kg See the figures below. * This measure excludes "the protrusions." Revision B „ FX-2190 Dimensions:
  • Epson 890N | Service Manual - Page 39
    EPSON FX-890/2190 † Physical specifications including Single bin cut sheet feeder (Bin2) „ FX-890 Dimensions: Weight: Appearance: 414 mm (W) x 445 mm (D) x 386 mm (H) * Approximately 8.2 kg See the figures below. * This measure excludes "the protrusions." Revision B „ FX-2190 Dimensions:
  • Epson 890N | Service Manual - Page 40
    EPSON FX-890/2190 † Physical specifications including High capacity cut sheet feeder (Bin) & Single bin cut sheet feeder (Bin2) „ FX-890 Dimensions: 414 mm (W) x 564 mm (D) x 408 mm (H) * Weight: Approximately 9.5 kg Appearance: See the figures below. Revision B „ FX-2190 Dimensions: Weight
  • Epson 890N | Service Manual - Page 41
    EPSON FX-890/2190 1.4.1 FX-880T+ Mode C A U T IO N This function may be used only on the models intended for EAI market. On any model intended for any other market, do not execute the command to enter this mode. This printer has FX-880T+ mode which supports not only OKI ML command but also
  • Epson 890N | Service Manual - Page 42
    EPSON FX-890/2190 1.4.1.3 Default setting items Table 1-40. Setting Values Available for Default Setting Mode Item Software : Settings with bold weight mean the default setting. 1.4.1.4 Printer defaults FX-880T+ mode has different defaults from current FX-890 mode as follows. Items Software Top
  • Epson 890N | Service Manual - Page 43
    OPERATING PRINCIPLES CHAPTER 2
  • Epson 890N | Service Manual - Page 44
    EPSON FX-890/2190 2.1 Overview This printer is divided into several main components for easy removal and repair. The main components are: „ C524MAIN: Control board „ C524PSB/PSE/PSH: Power supply board „ C524PNL: Operation panel board „ Printer mechanism: Printhead, Carriage, Ribbon
  • Epson 890N | Service Manual - Page 45
    EPSON FX-890/2190 2.1.1 Printer Mechanism This printer mechanism consists of Printhead, Paper feed mechanism, Carriage movement mechanism, Tractor feed mechanism, Platen gap adjustment mechanism, Ribbon feed mechanism, PF motor, CR motor, detectors, and so on. 2.1.1.1 Printhead The printhead
  • Epson 890N | Service Manual - Page 46
    EPSON FX-890/2190 Revision B 2.1.1.6 Ribbon Feed Mechanism The CR motor drives the ribbon feed mechanism via the timing belt. The ribbon feed 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. PG
  • Epson 890N | Service Manual - Page 47
    EPSON FX-890/2190 2.1.2 Circuit Operation 2.1.2.1 C524 MAIN Board The C524 MAIN board is the control circuit board of this printer. This board consists of several IC chips and drivers, as described in the table below: Elements CPU/ASIC (2in1ASIC) PROM (Flash : Storage of default setting values and
  • Epson 890N | Service Manual - Page 48
    EPSON FX-890/2190 Table 2-2. Major Elements on MAIN Board (continued) Elements Location Function TYPE-B IF circuit † Specification: Level 2 Current consumption 0.5 A max. SSI is supported. Transmission rates supported at reset: SLEEP signal (G/A output) Low. (Output current off) Head Driver
  • Epson 890N | Service Manual - Page 49
    EPSON FX-890/2190 Table 2-2. Major Elements on MAIN Board (continued) Elements Location Function Energy save (ESA VE) circuit † Driver element: DTC124X † Control: Controlled by output port (P_CTRL) of ASIC Register setting 0: 42 V power voltage rising (Power ON) {At reset} 1: 42 V power voltage
  • Epson 890N | Service Manual - Page 50
    EPSON FX-890/2190 2.1.2.2 C524 PSB/PSE/PSH Power Supply Circuit This printer can be powered by one of the following three power supply ZD type † Low power standby mode function by the ESAVE signal is supported † Chopper circuit with a MOSFET discrete structure Revision B INPUT SPECIFICATIONS Table
  • Epson 890N | Service Manual - Page 51
    EPSON FX-890/2190 Revision B Power Supply Unit Name Special output holding time (The period from Table 2-6. Protective Functions Item Output 1 Overcurrent protection (OCP) Dropping + cutoff OCP reset method Turning power off once and on again Load short-circuit current 0 A Overvoltage
  • Epson 890N | Service Manual - Page 52
    TROUBLESHOOTING CHAPTER 3
  • Epson 890N | Service Manual - Page 53
    EPSON FX-890/2190 Revision B 3.1 Overview The printer may exhibit different symptoms for the same problem, which makes troubleshooting more difficult. This section, however, provides simple and effective ways to facilitate troubleshooting. In addition, the User's Manual for EPSON EPSON FX-890/
  • Epson 890N | Service Manual - Page 54
    EPSON FX-890/2190 3.1.3 Preliminary Checks Before starting troubleshooting, be sure to verify that the following conditions are all met: † The power supply voltage must be within the specification limits. (Measure the voltage at
  • Epson 890N | Service Manual - Page 55
    EPSON FX-890/2190 3.2 Troubleshooting Based on Symptoms You can identify the defective component from the symptom displayed. Table 3-2 below lists the symptoms for various failures so that you can easily identify the problem. Based on the symptom as mentioned below, identify the problem and take a
  • Epson 890N | Service Manual - Page 56
    EPSON FX-890/2190 Revision B 3.2.2 No LED on Control Panel lights up even with power turned on Table 3-4. No LED on Control Panel lights up Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Fuse • Power Switch • Control
  • Epson 890N | Service Manual - Page 57
    EPSON FX-890/2190 3.2.4 Abnormal paper feeding Table 3-6. Abnormal paper feeding Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Front PE (Paper End) Detector (p.87) • Harness of Front PE Detector • Rear PE
  • Epson 890N | Service Manual - Page 58
    EPSON FX-890/2190 Revision B 3.2.5 Printing is faulty during self-test, but carriage operation is normal Table 3-7. Printing faulty during self-test, but carriage operation normal Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
  • Epson 890N | Service Manual - Page 59
    some trouble. ♦Is the problem solved? Replace the interface cable. Go to Step 3 Firmware 3 Upgrade firmware to the latest version. ♦Is the problem solved? Problem solved Go to Step 4 EEPROM clearing 4 Clear EEPROM to restore the default settings. ♦Is the problem solved? Problem solved
  • Epson 890N | Service Manual - Page 60
    EPSON FX-890/2190 3.2.8 Abnormal operation of ribbon Table 3-10. Abnormal operation of ribbon Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Ribbon Cartridge • Timing Belt • CR Motor (p.81) • Ribbon Drive (RD) Assembly (p.92)
  • Epson 890N | Service Manual - Page 61
    EPSON FX-890/2190 3.2.9 Abnormal operation of Carriage Unit Table 3-11. Abnormal operation of Carriage Unit Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Timing Belt • CR Motor (p.81) • HP (Home Position) Detector (p.78) •
  • Epson 890N | Service Manual - Page 62
    EPSON FX-890/2190 3.2.10 Faulty print Table 3-12. Faulty print Step Action and Question Yes No Parts below can be the source of this error (Chapter 4 Disassembly and Assembly) • Ribbon Mask • Printhead (p.77) • Printhead FFC • C524MAIN Board (p.74) Ribbon Mask Remove the Ribbon Mask
  • Epson 890N | Service Manual - Page 63
    EPSON FX-890/2190 3.2.12 Fatal Error Table 3-14. Troubleshooting for Fatal Error Action and Question Yes No Parts below can Replace the power supply circuit board (C524PSB/ PSE/PSH). Replace the printhead. Abnormal voltage with the simple ecodrive circuit (ECO Error : value = 3CH) The printer
  • Epson 890N | Service Manual - Page 64
    EPSON FX-890/2190 Revision B 3.3 Troubleshooting for Individual Units 3.3.1 Main Component Checking pin numbers match the printhead solenoid (dot wire) numbers. NOTE: Set the meter to ohms. Then disconnect the Motor from the Main Board and check it with printer power off. „ Specifications : 8.19
  • Epson 890N | Service Manual - Page 65
    DISASSEMBLY AND ASSEMBLY CHAPTER 4
  • Epson 890N | Service Manual - Page 66
    disassembling, assembling or adjusting the printer. Use only tools that meet these specifications. Table 4-1. Tool and Instrument List Name Phillips Screwdriver Specification No.2 EPSON Part No. B743800200 Phillips Screwdriver No.1 B743800100 Box Driver 7.0mm Diagonal B741700200 Tweezers
  • Epson 890N | Service Manual - Page 67
    EPSON FX-890/2190 4.1.3 Service Check After Repair After completing repair of the product, use the check list shown below to check the status of the repaired product and overall repair work performed before returning the product to the users. This list can be used as a record of all service works
  • Epson 890N | Service Manual - Page 68
    EPSON FX-890/2190 4.1.3.1 Abbreviations for Small Parts The table below lists the abbreviations used in this manual for small parts, Revision B Table 4-3. List of Screws Used No. Name and specification Shape PRINTER 11 MECHANISM MOUNTING SCREW 12 CP (M3x4) SHAFT,MOUNT,CR 13 (M8x10)
  • Epson 890N | Service Manual - Page 69
    EPSON FX-890/2190 (p.78) Platen (p.79) Upper Housing (p.72) Printer Mechanism Disassembly (p.77) Printer Mechanism (p.80) C524MAIN Board (p.74) C524PSB/PSE/ Detector (p.87) Carriage Assembly (p.88) Rear Paper Guide Assembly (p.90) Ribbon Drive (RD) Assembly (p.92) Figure 4-1. Disassembly
  • Epson 890N | Service Manual - Page 70
    EPSON FX-890/2190 4.2.1 Pre-disassembly Procedures 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. (See Figure 4-3) „ Front cover. (
  • Epson 890N | Service Manual - Page 71
    EPSON FX-890/2190 Revision B C A U T IO N 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 Disassembly and Assembly Main Components
  • Epson 890N | Service Manual - Page 72
    EPSON FX-890/2190 4.2.2 Upper Housing 1. Perform Pre-Disassembly. (p.70) 2. Remove 3 CBS (M3x8) screws securing the upper housing to the lower case. (See Figure 4-6) 3. Set the release lever
  • Epson 890N | Service Manual - Page 73
    EPSON FX-890/2190 6. Open the upper housing from the front side, and remove it. C A U T IO N „ When assembling the upper housing, put the catching holes in the upper
  • Epson 890N | Service Manual - Page 74
    EPSON FX-890/2190 4.2.3 C524MAIN and regulated at the assembly process. Never attempt to replace any components of this circuit on the board, and doing screws and 2 CBP (M3x12) screws securing the shield cover to the Printer Mechanism and lower housing. Then remove the shield cover. (See Figure
  • Epson 890N | Service Manual - Page 75
    EPSON FX-890 3x12) x6 Tightening Torque: 0.9±0.1 N.m GUIDE,I/F,BOARD I/F GROUNDING PLATE C524MAIN Board Revision E Q U IR E D Once the C524MAIN Board has been replaced, be sure to make the following adjustments with the adjustment program. USB-ID Input • Firmware Reloading COVER, CONNECTOR,UPPER
  • Epson 890N | Service Manual - Page 76
    EPSON FX-890/2190 4.2.4 C524PSB/PSE/PSH Board 1. Perform Pre-Disassembly. (p.70) 2. Remove the the C524PSB/PSE/PSH Board. W A R N IN G „ Before disassembling, assembling or adjusting the printer, disconnect the power supply cable from the AC power socket. Failure to do so might cause personal
  • Epson 890N | Service Manual - Page 77
    EPSON FX-890/2190 4.3 Printer Mechanism Disassembly 4.3.1 Printhead 1. Remove the top cover.(See Figure 4-2) or the C524MAIN Board. „ When replacing the Printhead, be sure to replace the Ribbon Mask Holder (with the Ribbon Mask) at the same time. All related parts are available as a kit as below
  • Epson 890N | Service Manual - Page 78
    EPSON FX-890/2190 4.3.2 HP (Home Position) Detector 1. Remove the top cover. (See Figure 4-2) 2. Release the hook attaching the HP detector to the Printer Mechanism, and remove it. (See Figure 4-13) 3. Disconnect the harness of the detector from the detector connector. Hook Harness Revision B HP
  • Epson 890N | Service Manual - Page 79
    EPSON FX-890/2190 4.3.3 Platen 1. not to cut your finger on the metallic frame or on the PAPER GUIDE ASSY., SUPPORT. When installing the COVER, PLATEN, make sure that the hook on the Adjustment (p.95) Figure 4-15. Platen Removal 2 Disassembly and Assembly Printer Mechanism Disassembly 79
  • Epson 890N | Service Manual - Page 80
    EPSON FX-890/2190 4.3.4 Printer Mechanism 1. Perform Pre-Disassembly. (p.70) 2. Remove the Upper Housing. (p.72) 3. Remove the shield cover.(See Figure 4-8) 4. Disconnect all the connectors connected to the C524MAIN board. (
  • Epson 890N | Service Manual - Page 81
    EPSON FX-890/2190 4.3.5 CR Motor 1. Remove the Printer Mechanism. (p.80) 2. Release the tension spring. (See Figure 4-17) 3. Disengage the TIMING BELT,CR from CR Motor Disassembly and Assembly Tension Spring TIMING BELT,CR Hanger Figure 4-17. CR Motor Removal 1 Printer Mechanism Disassembly 81
  • Epson 890N | Service Manual - Page 82
    EPSON FX-890/2190 4. Remove the 2 SHAFT,MOUNT,CR (M3x12) screws securing the CR Motor assembly to the FRAME,SUB,RIGHT, and remove the MOTOR,CR Cable CR Motor „ Lead the FFC and lead wires as shown below: Disassembly and Assembly Figure 4-18. CR Motor Removal 2 Printer Mechanism Disassembly 82
  • Epson 890N | Service Manual - Page 83
    EPSON FX-890/2190 4.3.6 PF Motor 1. Remove the Printer Mechanism. (p.80) 2. Release the motor harness from the Printer Mechanism. (See Figure 4-19) 3. Locate the release lever (Lever, Release) in the forefront position (Tractor Position). 4. Remove the 2 (CBS (M3x10), CB (M3x8)) screws securing the
  • Epson 890N | Service Manual - Page 84
    EPSON FX-890/2190 4.3.7 PF Gear Train 1. Remove the Printer Mechanism. (p.80) 2. Remove the PF Motor. (p.83) 3. Locate the release lever (Lever, Release) in the forefront position (Tractor Position). 4. Remove the head FFC from the FRAME,SUB,RIGHT of the Printer Mechanism. (See Figure 4-20) 5.
  • Epson 890N | Service Manual - Page 85
    EPSON FX-890/2190 „ Lubrication is necessary at two points. (For details, refer to "Lubrication" (p.100) in Chapter 6.) „ Pay attention to the .eps SPUR GEAR,34 SPUR GEAR,34.5 CAM,CLUTCH, TRACTOR Figure 4-21. PF Gear Train Disassembly 2 Disassembly and Assembly Printer Mechanism Disassembly 85
  • Epson 890N | Service Manual - Page 86
    EPSON FX-890/2190 4.3.8 PG (Platen Gap) Detector 1. Remove the Printer Mechanism. (p.80) 2. Release the 2 clips attaching the PG detector to the LEFT FRAME in the Printer Mechanism, and remove the detector. (See Figure 4-22) 3. Disconnect the harness from the detector. Revision B 4.3.9 Release
  • Epson 890N | Service Manual - Page 87
    EPSON FX-890/2190 4.3.10 Front PE (Paper End) Detector 1. Remove the Printer Mechanism. (p.80) 2. Release the 2 clips attaching the front PE detector to the Rear Paper Guide Assembly, and remove the detector. (See Figure 4-24) 3. Disconnect the harness from the detector. Front PE Detector Clips
  • Epson 890N | Service Manual - Page 88
    EPSON FX-890/2190 4.3.12 Carriage Assembly 1. Remove the Printer Mechanism. (p.80) 2. Remove the Head FFC. (See page 77) 3. Remove the Platen. (p.79) 4. Remove the CR Motor. (p.81) 5. Remove the hexagon nut (M4) and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever.
  • Epson 890N | Service Manual - Page 89
    EPSON FX-890/2190 7. 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) 8. Release the TIMING BELT . SHAFT, CR, GUIDE Carriage Assembly Revision B Clips TIMING BELT Frame, FRONT Disassembly and Assembly
  • Epson 890N | Service Manual - Page 90
    EPSON FX-890/2190 4.3.13 Rear Paper Guide Assembly 1. Remove the Printer Mechanism. (p.80) 2. Remove the Platen. (p.79) 3. Remove the hexagon nut and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever. (See Figure 4-26) 4. Remove the BUSHING,PARALLEL,ADJUST to turn
  • Epson 890N | Service Manual - Page 91
    EPSON FX-890/2190 10. Release the cables from the HOLDER,CABLE on the RIGHT FRAME, and remove the HOLDER,CABLE from the RIGHT FRAME. 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. Push and slide the clip
  • Epson 890N | Service Manual - Page 92
    EPSON FX-890/2190 4.3.14 Ribbon Drive (RD) Assembly 1. Remove the Printer Mechanism. (p.80) 2. Remove the Platen. (p.79) 3. Remove the hexagon nut and the washer securing the LEVER,G,ADJUST to the SHAFT,CR,GUIDE, and remove the lever. (See Figure 4-26) 4. Remove the BUSHING,PARALLEL,ADJUST to turn
  • Epson 890N | Service Manual - Page 93
    ADJUSTMENT CHAPTER 5
  • Epson 890N | Service Manual - Page 94
    EPSON FX-890/2190 5.1 Adjustment Overview 5.1.1 Required Adjustment This section describes the adjustments required after specified parts are removed or replaced. Table 5-1 below shows the parts removed/replaced and corresponding adjustments required. Table 5-1. Required Adjustment Removal or
  • Epson 890N | Service Manual - Page 95
    EPSON FX-890/2190 5.2 Adjusting and Resetting the Printer 5.2.1 Platen Gap Adjustment When the SHAFT,CR,GUIDE or BUSHING,PARALLEL, . (p.72) 2. Remove the Printhead. (p.77) 3. Using tweezers, remove the Ribbon Mask from the ribbon mask holder of the Carriage Assembly. C A U T IO N Take care not
  • Epson 890N | Service Manual - Page 96
    EPSON FX-890/2190 Revision B Platen Gap (PG) [mm] 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. For adjustment, turn the SHAFT,CR,GUIDE toward the PLATEN (widen) or toward the front (lessen). (See
  • Epson 890N | Service Manual - Page 97
    , double-click on the program icon [APFX8902190_Ver10E]. When the program is properly executed, a main window shown in XXX appears. Select appropriate item wtih each menu. † Model Name (FX-890 / FX-2190) † Destination (Select the product configuration that matches to your market) † Program Type This
  • Epson 890N | Service Manual - Page 98
    MAINTENANCE CHAPTER 6
  • Epson 890N | Service Manual - Page 99
    EPSON FX-890/2190 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
  • Epson 890N | Service Manual - Page 100
    EPSON FX-890/2190 Revision B 6.2 Lubrication Influence that oil and grease give is considerably large especially in low temperature. 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 Ribbon
  • Epson 890N | Service Manual - Page 101
    EPSON FX-890/2190 SPUR GEAR, 34.5 Revision B G-26 Figure 6-1. Lubrication Point (PF Gear Train) G-26 G-26 G-26 Ratchet,RD G-26 SPUR GEAR, 21 Figure 6-2. Lubricating Point (RD Assy 1) Maintenance Lubrication Figure 6-3. Lubricating Point (RD Assy 2) 101
  • Epson 890N | Service Manual - Page 102
    EPSON FX-890/2190 G-26 Combination Gear, 8.19 G-26 Combination Gear, 7.5,15 G-26 Spur Gear, 25.5 Figure 6-4. Lubricating Points (RD Assy 3) G-26 Direction of Leaf Spring Holder, PF,
  • Epson 890N | Service Manual - Page 103
    EPSON FX-890/2190 G-26 Roller, PF, Drive PG Adjusting holes (7 holes) Figure 6-8. Lubricating Points (LEFT FRAME) Maintenance Lubrication Revision B 103
  • Epson 890N | Service Manual - Page 104
    APPENDIX CHAPTER 7
  • Epson 890N | Service Manual - Page 105
    EPSON FX-890/2190 7.1 Connector Summary The primary components of the printer are connected as shown below; Board Table 7-1. Connector Summary Connector No. Pin Description CN1 36 Parallel I/F CN2 36 Type-B I/F (Option) CN3 4 USB I/F CN5 2 PG Detector
  • Epson 890N | Service Manual - Page 106
    EPSON FX-890/2190 † Parallel I/F (CN1) Refer to "Parallel interface (Forward channel)" (page 23). † Type-B I/F (CN2) Refer to "Type-B Interface communication specification" (page 27). † USB I/F (CN3) Refer to "
  • Epson 890N | Service Manual - Page 107
    EPSON FX-890/2190 † Printhead (CN15, CN16) „ R side (CN15: upper connector) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Table 7-9. Connector Pin Assignment - CN15 I/O Signal Name Function O
  • Epson 890N | Service Manual - Page 108
    EPSON FX-890/2190 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 Revision B Appendix Electric Circuit Diagrams 108
  • Epson 890N | Service Manual - Page 109
  • Epson 890N | Service Manual - Page 110
  • Epson 890N | Service Manual - Page 111
  • Epson 890N | Service Manual - Page 112
  • Epson 890N | Service Manual - Page 113
  • Epson 890N | Service Manual - Page 114
    EPSON FX-890/2190 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) † Exploded Diagram for FX-2190
  • Epson 890N | Service Manual - Page 115
    117 180 180 180 132 180 180 ICD E C 125 B J G H F 127 133 185 185 183 K L 180 138 M D 112 180 112 115 100 101 137 107 F OR F X-890 NO.1 R ev.01 C 524-C AS E -01
  • Epson 890N | Service Manual - Page 116
    A 450 B 372 350 A 300 C ICD E B J G H F K L M 200 D 400 F OR F X-890 NO.2 R ev.01 C 524-E LE C -01
  • Epson 890N | Service Manual - Page 117
    661 569 660 661 500 501 594 599 598 541 601 591 607 595 660 661 596 H 529 511 609 580 F 609 608 592 FOR FX-890 NO.3 660 661 R ev.01 C 524-ME C H-01
  • Epson 890N | Service Manual - Page 118
    02 04 02 02 06 07 04 xx 03 05 05 01 F OR F X-890 NO.4 R ev.01 C 524_P AC K _01
  • Epson 890N | Service Manual - Page 119
    to which no reference number is assigned will not be available as after-sale service parts. 151 A 110 119 126 108 125 125 150 109 125 133 115 125 126 123 135 122 F 126 H 126 F D G 117 132 E I B J K 126 L 101 F 100 112 111 107 112 FOR FX-2190 NO.1 Rev.01 C526_CASE_01
  • Epson 890N | Service Manual - Page 120
    450 A B 372 A 373 330 F H I B J K L F D G E F 200 400 FOR FX-2190 NO.2 Rev.01 C526_ELEC_01
  • Epson 890N | Service Manual - Page 121
    593 590 D 618 651 587 610 578 596 594598 601 591 607595 605 610 511 609 610 E 541 G 540 505 529 524 580 592 The parts to which no reference number is assigned will not be available as after-sale service parts. FOR FX-2190 NO.3 Rev.01 540 505 C526_MECH_01
  • Epson 890N | Service Manual - Page 122
    EPSON FX-890/2190 7.4 Parts List FX-890 REF# NON FIG NON FIG 100 101 102 103 104 105 106 107 108 109 110 111 112 115 116 117 120 121 122 125 Table 7-11. Parts List - FX-890 DESCRIPTION "SOFTWARE CD-ROM,EAI" USER'S GUIDE "HOUSING ASSY.,LOWER" FOOT "HOUSING ASSY.,UPPER" "COVER ASSY .,PRINTER,REAR"
  • Epson 890N | Service Manual - Page 123
    523 Table 7-11. Parts List - FX-890 DESCRIPTION CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR(X600440310) CONNECTOR(X600440120) CONNECTOR(X600440120) DIODE DIODE(X320010829) DIODE(X320011839) DIODE(X320011839) ASIC EEPROM RESET IC HYBRID IC SLA7024M FLASH ROM IC PRINTER MECHANISM(ASP)M-3Q10-100
  • Epson 890N | Service Manual - Page 124
    EPSON FX-890/2190 REF# 552 556 557 560 561 562 563 564 568 569 570 572 573 574 575 576 577 578 579 580 581 582 583 584 585 Table 7-11. Parts List - FX-890 LEFT" RIBBON MASK "PAPER GUIDE ASSY.,SUPPORT" "GUIDE,PAPER 7-11. Parts List - FX-890 DESCRIPTION "MOUNTING PLATE,MOTOR,CR" "HOLDER,RIBBON MASK"
  • Epson 890N | Service Manual - Page 125
    EPSON FX-890/2190 REF# 618 619 620 621 622 623 650 651 652 653 655 660 661 662 1 2 3 4 5 6 7 300 400 Table 7-11. Parts List - FX-890 DESCRIPTION "SPUR GEAR,36" RETAINING RING(B160101412) "LEVER,DETECTOR,PE,REAR" "LEVER,PE,SUPPORT" "TORSION SPRING,0.26" "PLAIN WASHER,3X0.5X8,F/ZB" HEAD KIT ASP "
  • Epson 890N | Service Manual - Page 126
    EPSON FX-890/2190 FX-2190 Ref. No. NON FIG NON FIG 100 101 102 103 104 105 106 107 108 109 110 111 112 113 115 116 117 118 119 120 121 122 Table 7-12. Parts List - FX-2190 Description "SOFTWARE CD-ROM,EAI" USER'S GUIDE "HOUSING ASSY.,LOWER" FOOT "HOUSING ASSY.,UPPER" "COVER ASSY.,PRINTER,REAR" "
  • Epson 890N | Service Manual - Page 127
    EPSON FX-890/2190 Ref. No. CN16 CN2 CN20 CN3 CN5 CN6 CN7 CN8 D1 D4 D7 D8 DM2 IC13 IC15 IC16 IC2 IC4 IC6 IC9 Q1 Q27 Q28 ZD3 500 Table 7-12. Parts List - FX-2190 Description CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR CONNECTOR(X600440310) CONNECTOR(X600440120) DIODE DIODE(X320010829
  • Epson 890N | Service Manual - Page 128
    EPSON FX-890/2190 Ref. No. 543 544 545 546 547 548 549 550 551 552 556 557 560 561 562 563 564 565 568 569 570 571 572 573 575 Table 7-12. Parts List - FX-2190 Description "TRACTOR,RIGHT;EDGB" "SHAFT,TR,DRIVE" "SHAFT,TR,GUIDE" "FRAME,TR,LEFT;EPAG" "FRAME,TR,RIGHT;EPAG" "LEVER,TR
  • Epson 890N | Service Manual - Page 129
    EPSON FX-890/2190 Ref. No. 605 607 609 610 613 615 616 618 620 621 622 650 651 652 NON FIG NON FIG Table 7-12. Parts List - FX-2190 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"
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EPSON FX-890/2190
Serial Impact Dot Matrix Printer
SEDM02003
®
SERVICE MANUAL