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Epson LQ-570e Service Manual

Epson LQ-570e Service Manual

24 pin impact dot printer
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Download this manual See also: Reference Manual, User Manual
SERVICE MANUAL
SERVICE MANUAL
SERVICE MANUAL
SERVICE MANUAL
24 Pin Impact Dot Printer
EPSON LQ-570e/LQ-580
®
SEDM996002

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Summary of Contents for Epson LQ-570e

  • Page 1 SERVICE MANUAL SERVICE MANUAL SERVICE MANUAL SERVICE MANUAL 24 Pin Impact Dot Printer EPSON LQ-570e/LQ-580 ® SEDM996002...
  • 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 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 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

    About This Manual This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON LQ-570e/LQ-580. 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.
  • Page 5 Revision Status Revision Issued Date Description Rev. A February 10, 2000 First Release Rev. B February 17, 2000 Component Layout added. Adjustment Program version up. Revision: Rev. C March 30, 2000 1. Chapter 3: Voltage waveforms have been added. 2. Chapter 6: Illustrations have been corrected.

  • Page 6: Table Of Contents

    EPSON LQ-570e/LQ-580 Revision C Contents Chapter 1 Product Description 1.5.2.1 Usual Operation ..............34 1.5.2.2 Operation at Power-on ............34 1.1 Specifications ..................9 1.5.2.3 Default Setting ..............35 1.1.1 Features ..................9 1.5.3 Bi-d. Adjustment ................ 36 1.1.2 Accessories ................10 1.5.4 EEPROM Initialization Method ..........
  • Page 7 EPSON LQ-570e/LQ-580 Revision C 2.3.2 Input and Output Specification ..........50 4.2.9.1 CR Motor Removal ............. 85 2.3.3 C293MAIN Board Circuit ............52 4.2.9.2 PF Motor Removal ............. 85 2.3.3.1 Main Components .............. 53 4.2.9.3 PF Gear Train Disassembly ..........86 2.3.3.2 Main Circuits ...............

  • Page 8: Chapter 1 Product Description

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

  • Page 9: Specifications

    EPSON LQ-570e/LQ-580 Revision C 1.1 Specifications Interface Bi-directional parallel interface (IEEE-1284 nibble mode supported) Type B I/F level 2 (Option) This specification outlines the characteristics of a 24 pin serial impact dot matrix printer LQ-570e/LQ-580. Control code: ESC/P 2 and IBM 2390 Plus emulation...

  • Page 10: Accessories

    EPSON LQ-570e/LQ-580 Revision C 1.1.2 Accessories Table 1-3. Consumable and Optional Items Unit Description Table 1-1. Enclosed Parts IEEE-1284 parallel I/F card C82345* Enclosed Items Quantity Ethernet I/F card for 10Base T/2 C82362* User's manual Ethernet I/F card for 100Base T / 100Base TX...

  • Page 11: Hardware Specifications

    EPSON LQ-570e/LQ-580 Revision C 1.2 Hardware Specifications NOTE: When the power supply voltage drops to the lower limit, the printer stops printing and then starts printing the rest on the line again more slowly than before. 1.2.1 Printing Method NOTE: When the head temperature rises to the upper limit, the printer stops...

  • Page 12: Paper Handling Specifications

    EPSON LQ-570e/LQ-580 Revision C 1.2.3 Paper Handling Specifications Release lever The release lever must be set according to the following table. Feeding Method Friction feed: (front, rear) Table 1-6. Release Lever Setting Position Push tractor feed: (rear) Lever Position Paper path / Feeder Paper / Media Push &...

  • Page 13: Paper Specifications

    EPSON LQ-570e/LQ-580 Revision C Table 1-8. Cut Sheet (single sheet, not multi part) Paper thickness lever The paper thickness lever must be set at the proper position as shown below. Rear Entry Front Entry Table 1-7. Adjust Lever Setting Position...
  • Page 14 EPSON LQ-570e/LQ-580 Revision C Rear Entry Front Entry Rear Entry High- Single- Front Manual High- Manual Single- Minimum Maximum Capacity Entry Insertion Capacity CSF Insertion Bin CSF Maximum Minimum Weight - - - - - - (g/m (0.0205) (0.0063) - - -...
  • Page 15 EPSON LQ-570e/LQ-580 Revision C Card Continuous paper (Single sheet and Multipart) Table 1-11. Card Table 1-12. Continuous Paper (Single sheet and Multipart) Rear Entry Front Entry Rear Entry Bottom Entry Front Entry Manual High- Min. Max. Min. Max. Min. Max.
  • Page 16 EPSON LQ-570e/LQ-580 Revision C Continuous paper with labels 63.5 mm (2.5 inch) min. Table 1-13. Continuous Paper with Labels Front Entry Rear Entry Bottom Entry 23.8 mm Label Min. Max. Min. Max. Min. Max. (15/16inch) min. Label size See the figure below.

  • Page 17: Printable Area

    EPSON LQ-570e/LQ-580 Revision C 1.2.5 Printable Area Table 1-15. Printable Area for Cut Sheet Cut sheets Single Sheet Multi Part PW (Width) Refer to 1.2.4 "Paper Refer to 1.2.4 "Paper Specifications" Specifications" PL (Length) Refer to 1.2.4 "Paper Refer to 1.2.4 "Paper Specifications"...
  • Page 18 EPSON LQ-570e/LQ-580 Revision C Envelop and card Table 1-16. Printable Area for Envelop and Card Single Sheet Multi Part PW (Width) Refer to 1.2.4 "Paper Refer to 1.2.4 "Paper Specifications" Specifications" PL (Length) Refer to 1.2.4 "Paper Refer to 1.2.4 "Paper Specifications"...
  • Page 19 EPSON LQ-570e/LQ-580 Revision C Continuous paper Table 1-17. Printable Area for Continuous Paper Continuous Paper PW (Width) Refer to 1.2.4 "Paper Specifications" PL (Length) Refer to 1.2.4 "Paper Specifications" LM (Left Margin) When PW<=228.6 mm: 13 mm or more P e r f o r a t i o n When PW>209.2 mm: Depend on the maximum...

  • Page 20: Ribbon Cartridge

    EPSON LQ-570e/LQ-580 Revision C 1.2.6 Ribbon Cartridge Roll paper Type: Fabric Color: Black Ribbon life: approx. 2 million characters (LQ 10 cpi, 48 dots/character) Type: Film Color: Black Ribbon life: approx. 0.2 million characters (LQ 10 cpi, 48 dots/character) 1.2.7 Electrical Specifications...

  • Page 21: Environmental Condition

    EPSON LQ-570e/LQ-580 Revision C 1.2.10 Safety Approvals Power consumption: Approximately 36 W (ISO/IEC10561 Letter pattern) 120 V version Energy Star Compliant Safety standards: UL1950 Ω Insulation resistance: min. CSA C22.2 No. 950 (between AC line and chassis, DC 500V) EMI:...

  • Page 22: Physical Specifications

    EPSON LQ-570e/LQ-580 Revision C 1.2.12 Physical Specifications Physical Specifications Dimensions: 415x368x160 mm (WxDxH) Mass: Approx. 7.5 kg Appearance: See below. Physical Specifications including CSF bin1 (High capacity bin CSF) Dimensions: 415x433x366 mm (WxDxH) Mass: Approx. 9.0 kg Physical Specifications including CSF bin 1 (Single bin CSF)

  • Page 23: Firmware Specifications

    1.3 Firmware Specifications International character sets: 14 countries and legal U.S.A France Germany U.K. Denmark 1 Sweden This section describes the firmware specifications for the EPSON LQ-570e/LQ-580. Italy Spain 1 Japan Norway Denmark 2 Spain 2 1.3.1 Control Codes and Fonts...
  • Page 24 EPSON Courier PC 858 EPSON Sans serif EPSON Prestige EPSON Roman T Italic table* PC 437(US, Standard Europe)* EPSON Script EPSON Sans serif H PC 850 (Multilingual)* PC 860(Portuguese)* EPSON OCR-B PC 861 (Icelandic)* PC863 (Canadian-French)* EPSON Orator PC 865(Nordic)*...

  • Page 25: Interface Specifications

    EPSON LQ-570e/LQ-580 Revision C 1.4 Interface Specifications EPSON LQ-570e/LQ-580 provides bi-directional 8 bit parallel interface and Type-B optional interface slot as standard. 1.4.1 Parallel Interface (Forward Channel) Transmission mode: 8 bit parallel IEEE-1284 compatibility mode Adaptable connector: 57-30360 (Amphenol) or equivalent...
  • Page 26 EPSON LQ-570e/LQ-580 Revision C BUSY signal is active (HIGH level) under the conditions below: Table 1-22. Connector Pin Assignment and Signals In the process of receiving data Return Signal Pin No. In/Out Function Description Name In the condition of being input buffer full...

  • Page 27: Parallel Interface (Reverse Channel)

    EPSON LQ-570e/LQ-580 Revision C 1.4.2 Parallel Interface (Reverse Channel) Market ID=1 When IEEE1284.4 is enabled; Transmission mode: IEEE-1284 nibble mode [00H][50H] Adaptable connector: See 1.4.1 "Parallel Interface (Forward Channel)" MFG: EPSON; Synchronization: Refer to the IEEE-1284 specification CMD: ESCPL2,PRPXL24,BDC,D4; MDL: LQ-570e;...

  • Page 28: Optional Interface

    EPSON LQ-570e/LQ-580 Revision C 1.4.3 Optional Interface Table 1-23. Connector Pin Assignment and Signals Return Type-B optional interface cards are available. Pin No. Signal Name In/Out Function Description Market ID=0 PtrBusy/DataBit- Printer busy signal and reverse channel Table 1-24. Optional Interface (Market ID=0) transfer data bit 3 or 7.

  • Page 29: Interface Selection

    EPSON LQ-570e/LQ-580 Revision C 1.4.4 Interface Selection Auto: Communication is carried out in the conventional mode until a magic string The printer has 2 interfaces; the parallel interface and Type-B optional interface. These (1284.4 synchronous commands) is received. By receiving a magic string, interfaces are selected manually by Default Setting or selected automatically.
  • Page 30 EPSON LQ-570e/LQ-580 Revision C Table 1-26. Reply for Optional Command Main Command Option Command Table 1-27. Main Command Command Name Reply-A Reply-B Number Main Return Buffered Data Reject Command Command Name Setting Timing Number Send Entity Type Accept Execute OK Start Software Reset -Init signal on the std.

  • Page 31: Operation

    EPSON LQ-570e/LQ-580 Revision C 1.5 Operation 1.5.1.1 Switches Operation in normal mode In normal mode, pressing panel switches executes following function; 1.5.1 Control Panel Table 1-28. Operation in Normal Mode 6 switches and 8 LEDs are on the panel as shown below.
  • Page 32 EPSON LQ-570e/LQ-580 Revision C Table 1-28. Operation in Normal Mode Operation at power on Turning the printer on while pressing panel switches executes the functions below; Switch Function Table 1-29. Operation at Power On -Selects font. (Draft, Roman, Sans serif, Courier, Prestige, Script, Others)

  • Page 33: Led

    EPSON LQ-570e/LQ-580 Revision C 1.5.1.2 LED *3 Tear Off/Bin (Green) -2 LEDs display the status of CSF bin selection when cut sheet is used. Only a right Indication in normal mode LED is on when Bin 1 is selected,. -Both LEDs blink when continuous paper is in the Tear-off position and both LEDs are Table 1-31.

  • Page 34: Functions

    EPSON LQ-570e/LQ-580 Revision C 1.5.2 Functions 1.5.2.2 Operation at Power-on Various modes are activated by turning on power while the buttons on the panel pressed. 1.5.2.1 Usual Operation Self test Pause Prints the self test pattern. To cancel it, make printer pause and turn off the power.

  • Page 35: Default Setting

    EPSON LQ-570e/LQ-580 Revision C 1.5.2.3 Default Setting Table 1-32. Setting Menu There are some parameters that can be changed by users and will be referred at the time of Item Setting / Value *2 initialization of the printer. 3 inch, 3.5 inch, 4 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 8.5...

  • Page 36: Bi-D. Adjustment

    EPSON LQ-570e/LQ-580 Revision C 1.5.5 Initialization Table 1-32. Setting Menu Item Setting / Value *2 Power-on initialization The initialization of this level is activated by power-on or cold-reset command Font *1 OCR-B, Orator, Orator-S, Script C, Roman T, Sans serif H (remote RS command).

  • Page 37: Errors

    EPSON LQ-570e/LQ-580 Revision C 1.5.6 Errors Paper out error: When the printer fails to feed a sheet, it goes a paper out error. Release lever error: When release lever position is wrong, it goes a release lever error. Cover Open error: When the printer’s cover is opened, it goes a release lever error.

  • Page 38: Control Codes

    EPSON LQ-570e/LQ-580 Revision C 1.6 Control codes Table 1-33. ESC/P2 Classification Operation Command 1.6.1 ESC/P2 Font enhancement Double-Width ESC W, DC4, SO Condensed DC2, SI Table 1-33. ESC/P2 Double-height ESC w Classification Operation Command Double-Strike ESC G, ESC H General Operation...

  • Page 39: Ibm 2390 Plus Emulation

    EPSON LQ-570e/LQ-580 Revision C 1.6.2 IBM 2390 Plus Emulation Table 1-34. IBM 2390 Plus emulation Classification Operation Command Table 1-34. IBM 2390 Plus emulation Print position motion Horizontal Print Position ESC d Classification Operation Command Initialize Tab Position ESC R...

  • Page 40: Bi-Directional Commands

    EPSON LQ-570e/LQ-580 Revision C Table 1-34. IBM 2390 Plus emulation Exit Remote Mode: [ESC][NUL][00H][00H] Remote Commands Classification Operation Command Change Printer Settings: XX[nL][nH][00H][ml]...[mx] Bar code Set up Bar code ESC [f Reply Printer Settings: XX[nL][nH][01H][ml]...[mx] Transfer Bar code ESC [p Download Download ESC = command is not provided.
  • Page 41 EPSON LQ-570e/LQ-580 Revision C Table 1-35. Bi-Directional Commands Table 1-35. Bi-Directional Commands Function Code/ Parameter Save Function Code/ Parameter Save Select character pitch “CP” 02H 00H 00H m1 Turn auto tear-off on/off “TO” 02H 00H 00H m1 ¡ ∆*1 m1=0(10cpi), 1(12cpi), 2(15cpi), 3 (17.1cpi),...
  • Page 42 EPSON LQ-570e/LQ-580 Revision C *2 Only the following parameters are memorized. Character table Character table PC866 UKR PC 708 m1 set by AT/CT m2 set by AT m3 set by AT PC869 PC720 PCAR_864 ISO 8859-2 All parameters that can be set...
  • Page 43 EPSON LQ-570e/LQ-580 Revision C MIB proxy information Error “<error code>” “1G:” Fatal error “00” “030FNA,” Sheet feeder bin (removable), capacity 15mm, quantity of paper N.A. Port is not selected “01” “0505NA,” Sheet feeder bin 2 (removable), capacity 5mm, Release lever position error “03”...

  • Page 44: Functional Specification

    EPSON LQ-570e/LQ-580 Revision C 1.7 Functional Specification Panel Sheet: 1051396 1.7.2 Europe Specification 1.7.1 Standard Specification Board Specification Board Specification MAIN Board Assembly: C293MAIN (Overseas Europe standard) MAIN Board Assembly: C293MAIN (Overseas standard) Europe Specifications the same as of standard.

  • Page 45: Thai Specification

    EPSON LQ-570e/LQ-580 Revision C 1.7.4 Thai Specification 1.7.6 China Specification Board Specification Board Specification MAIN Board Assembly: C293MAIN (Thai Specification) MAIN Board Assembly: C293MAIN (China Specification) Table 1-40. ROM Table 1-42. ROM Function Address Capacity Name Note Function Address Capacity...

  • Page 46: Chapter 2 Operating Principles

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

  • Page 47: Main Components

    EPSON LQ-580 Revision C 2.1 Main Components 2.1.2 C293PSB/PSE Board The C293 PSB/PSE power supply board consists of Transformer, Switching FET, This printer is composed of following main units: Regulator IC, Diode bridge, Fuse, Photo-coupler, and so on. C293MAIN : Control board...

  • Page 48: Printer Mechanism

    EPSON LQ-580 Revision C 2.2 Printer Mechanism 2.2.5 Platen Gap Adjustment Mechanism The platen gap (the gap between the platen and the printhead) adjustment mechanism This printer mechanism consists of Printhead, Paper feed mechanism, Carriage movement consists of CR guide shaft, parallelism adjustment bushing, PG adjust lever and PG mechanism, Tractor feed mechanism, Platen gap adjustment mechanism, Ribbon feed detector.
  • Page 49 EPSON LQ-580 Revision C T r a c t o r R e l e a s e L e v e r R e l e a s e D e t e c t o r R e a r P E D E t e c t o r...

  • Page 50: Circuit Operation

    EPSON LQ-580 Revision C 2.3 Circuit Operation Input ZC-RCC Converter Line 2.3.1 C293PSB/PSE Power Supply Circuit AC Line +35V/ -Over Current Protection Filter Input 1.0A -Over Voltage Protection This printer can be powered by either of two power supply boards: the C293PSB (120V)
  • Page 51 EPSON LQ-580 Revision C Table 2-3. Input Specifications Output Item 100-120V Model 220-240V Model Table 2-4. Output Specifications Inrush Current*2 40A (0-p) or less 30A (0-p) or less Item Output 1 Output 2 (Input: 138V, 60Hz) (Input: 276V, 50Hz) Rated Output Voltage +35V (At 25°C, cold start)

  • Page 52: C293Main Board Circuit

    EPSON LQ-580 Revision C 2.3.3 C293MAIN Board Circuit Logic Circuit (CPU, ASIC, PROM, DRAM, EEPROM, CGROM) Mechanical Control Circuit The C293MAIN board is composed by following main components and circuits. Motor control and driving circuit (CR, PF) C293MAIN Board Head control and driving circuit...

  • Page 53: Main Components

    EPSON LQ-580 Revision C 2.3.3.1 Main Components Table 2-6. Function of the Main Components Component Location Name Memo Table 2-6. Function of the Main Components -35V ± 6% Tr 2SD2206A, Component Location Name Memo -Generate head (24pin) driving wave Head Drive...

  • Page 54: Main Circuits

    EPSON LQ-580 Revision C 2.3.3.2 Main Circuits The CR motor drive circuit is shown below (Refer to Appendix - Cuicirt Diagram in detail). CR Motor Circuit Figure 2-6. CR Motor Drive Circuit Table 2-7. Items Specification The CR motor circuit specifications are shown in the table below.
  • Page 55 EPSON LQ-580 Revision C PF Motor Circuit The PF motor drive circuit is shown below (Refer to Appendix - Cuicirt Diagram in detail). Control Signal Reference Current Figure 2-7. PF Motor Drive Circuit Items Specification Generate driving IC control signal by G/A based on trigger signal The PF motor circuit specifications are shown in the table below.

  • Page 56: C293 Pnl Board Circuit

    EPSON LQ-580 Revision C 2.3.4 C293 PNL Board Circuit LED5: PITC1L LED6: TBIN2L 2.3.4.1 Switch Port LED7: TBIN1L Switch Numbers: 6 Logic LED8: POUTL SW On: Low LED9: PAUSEL SW Off: High Ω Current control resistance: 330 CPU Terminal PZ0: Font SW...

  • Page 57: Chapter 3 Troubleshooting

    C H A P T E R TROUBLESHOOTING...

  • Page 58: Overview

    EPSON LQ-570e/LQ-580 Revision C 3.1 Overview 3.1.1 Main Component Checking Point The following components can be checked by a simple measurement equipment such as a The printer may exhibit different symptoms for the same problem, which makes multimeter. troubleshooting more difficult. This section, however, provides simple and effective ways to facilitate troubleshooting.
  • Page 59 EPSON LQ-570e/LQ-580 Revision C Table 3-2. Printhead Coil Resistance Test Points Table 3-4. Detector Test Point Test Method Test Method Common Meter Detector Connector Test Pin No. (Set meter to ohms. Disconnect the (Set meter to ohms. Check with Meter Reading Pin No.

  • Page 60: Error

    EPSON LQ-570e/LQ-580 Revision C 3.1.2 Error As this printer checks its condition by itself at power-on, when it finds any trouble, it indicates it with error indication buzzer and LEDs. The error Indications and corresponding remedies are shown in the table below: Table 3-5.

  • Page 61: Unit Level Troubleshooting

    EPSON LQ-570e/LQ-580 Revision C 3.2 UNIT LEVEL TROUBLESHOOTING The repair procedure flowcharts use the following symbols: S T A R T S t a r t You may be able to identify the defective unit just from the symptom displayed. The table...
  • Page 62 EPSON LQ-570e/LQ-580 Revision C PRINTER FAILS TO OPERATE WHEN POWER IS ON. ABNORMAL CARRIAGE OPERATION AT POWER ON. Flowchart 3-2. Flowchart 3-1. Troubleshooting UNIT LEVEL TROUBLESHOOTING...
  • Page 63 EPSON LQ-570e/LQ-580 Revision C PRINTING IS FAULTY DURING SELF-TEST, BUT CARRIAGE ABNORMAL PAPER FEEDING OPERATION IS NORMAL. Flowchart 3-4. Flowchart 3-3. Troubleshooting UNIT LEVEL TROUBLESHOOTING...
  • Page 64 EPSON LQ-570e/LQ-580 Revision C ABNORMAL CONTROL PANEL OPERATION DATA SENT BY THE HOST COMPUTER IS PRINTED INCORRECTLY Flowchart 3-5. Flowchart 3-6. Troubleshooting UNIT LEVEL TROUBLESHOOTING...

  • Page 65: Unit Repairing Of The Power Supply Board

    EPSON LQ-570e/LQ-580 Revision C 3.3 Unit Repairing of the Power Supply Board The table below lets you troubleshoot problems with the power supply board (C293PSB/ PSE). The table provides various symptoms, likely cases, and checkpoints. Checkpoints include waveforms, resistance, and other value to be checked to evaluate the operation of This section is necessary only for servicer persons who repair to the component level.
  • Page 66 EPSON LQ-570e/LQ-580 Revision C Table 3-1. Repair of the C293PSB/PSE Symptom Condition Cause Check point Solution Verify the waveform at pin 7 or 8 of PC1. +35V line is defective. PC1 is defective. Replace the C293PSB/PSE board. Verify the waveform at pin 5 of IC51.

  • Page 67: Unit Repairing Of The Main Board

    EPSON LQ-570e/LQ-580 Revision C 3.4 Unit Repairing of the MAIN Board The table below lets you troubleshoot problems with the main board (C293MAIN). The table provides various symptoms, likely cases, and checkpoints. Checkpoints include waveforms, resistance, and other value to be checked to evaluate the operation of each This section is necessary only for servicers who repair to the component level.

  • Page 68: Repairing The Printer Mechanism

    EPSON LQ-570e/LQ-580 Revision C 3.5 Repairing the Printer Mechanism For detailed procedures for replacing or adjusting matter, refer to Chapter 4, Disassembly and Assembly and Chapter 5, adjustments. If a problem or symptom occurs, refer to following tables to try find other potential causes.
  • Page 69 EPSON LQ-570e/LQ-580 Revision C Table 3-3. Repairing the Printer Mechanism Symptom Cause Check point Solution The printhead is defective. Verify whether head wire is born or not. Replace the printhead. The printing is too light, or the print Set the gap adjustment lever to the first position, and check the density is not uniform.

  • Page 70: Chapter 4 Disassembly And Assembly

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

  • Page 71: Overview

    EPSON LQ-570e/LQ-580 Revision C 4.1 Overview 4.1.2 Tools and Instruments The table below lists the tools and the instruments required for disassembling, assembling This section describes various points to note when disassembling and assembling the or adjusting the printer. Use only tools that meets these specifications.

  • Page 72: Service Check After Repair

    EPSON LQ-570e/LQ-580 Revision C 4.1.3 Service Check After Repair Table 4-2. Service Check After Repair Category Component Item to Check Status After completing repair of the product, use the check list shown below, to verify status of repaired product and all the repair work performed before returning the product to the users.

  • Page 73: Specifications For Screws

    EPSON LQ-570e/LQ-580 Revision C 4.1.4 Specifications for Screws The table below lists the abbreviations used in this manual for screws. Table 4-3. Abbreviations and Screw Type Abbreviation Part Name CB Screw Cross-recessed Bind-head Screw CBS Screw Cross-recessed Bind-head S-tight Screw...

  • Page 74: Disassembly And Assembly

    EPSON LQ-570e/LQ-580 Revision C 4.2 Disassembly and Assembly Before disassembling any parts of the printer, note the warnings C A U T I O N in 4.1.1 "Disassembly Precautions". This section describes procedures for disassembling the main components of the printer.

  • Page 75: Pre-Disassembly Procedures

    EPSON LQ-570e/LQ-580 Revision C 4.2.1 Pre-disassembly Procedures 4.2.1.1 Front Cover Assembly Removal Before starting disassembly procedures, the following parts must be removed. (see the FRONT COVER ASSEMBLY figure below.) Open the front cover assembly by releasing 2 top hooks locking the upper housing.

  • Page 76: Ej (Paper Eject) Assembly Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.1.2 EJ (Paper Eject) Assembly Removal 4.2.1.3 Tractor Assembly Removal Press and release both front hooks and remove the paper eject assembly. Unhook the levers of the tractor assembly from the dowel of the Mechanism frames.

  • Page 77: Printhead Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.2 Printhead Removal When assembling the printhead, check the following. Remove the top cover, paper guide assembly and paper eject assembly. (See Figure 2 holes of the printhead must be put straight on 2 dowels of the 4-2.)

  • Page 78: Hp (Home Position) Detector Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.3 HP (Home Position) Detector Removal Remove the top cover. Release the hook attaching the HP detector to the printer mechanism and remove it. Disconnect the harness of the detector from the detector connector. Hook HP Detector Harness Figure 4-7.

  • Page 79: Upper Housing Assembly Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.4 Upper Housing Assembly Removal Remove the paper guide assembly, top cover, front cover, paper eject cover, knob and tractor unit. (See Section.2.3.) Remove 2 CBS (3x8, F/ZN) screws and a CBP-Tight (4x12, F/ZN) screw securing the upper housing to the lower case.

  • Page 80: C293 Main Board Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.5 C293 MAIN Board Removal When installing the shield plate, be careful not to pinch cables. After the shield plate is secured with screws, make sure the cable Before disassembling, assembling or adjusting the printer, is not pinched.
  • Page 81 EPSON LQ-570e/LQ-580 Revision C Must use the wrist band while handling the main board C A U T I O N CBP-Tight (3x12) assembly. Be careful with the sharp edges of the shield plate to avoid injury. I/F Grounding Plate...

  • Page 82: C293 Psb/Pse Board Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.6 C293 PSB/PSE Board Removal Remove the paper guide assembly, top cover, front cover, paper eject cover, knob and tractor unit. (See 4.2.1 "Pre-disassembly Procedures".) 2 CBP-Tight (3x12, F/ZN) Screws Remove the upper housing. (See 4.2.4 "Upper Housing Assembly Removal".)

  • Page 83: Printer Mechanism Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.7 Printer Mechanism Removal Remove the paper guide assembly, top cover, front cover, paper eject cover, knob and tractor unit. (See 4.2.1 "Pre-disassembly Procedures".) Remove the upper housing. (See 4.2.4 "Upper Housing Assembly Removal".) Remove 7 CBS (3x4, F/ZN) screws and 2 CBP-Tight (3x12, F/ZN) screws securing the shield plate to the rear frame and power supply board assembly and remove the shield plate.

  • Page 84: Platen Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.8 Platen Removal Be careful not to damage on the paper guide support; B. Remove the paper guide assembly, top cover, front cover, paper eject cover, knob and No gap between the platen assembly and the paper guide tractor unit.

  • Page 85: Printer Mechanism Disassembly

    EPSON LQ-570e/LQ-580 Revision C 4.2.9 Printer Mechanism Disassembly 4.2.9.2 PF Motor Removal Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal") 4.2.9.1 CR Motor Removal Release the motor harness from the printer mechanism securing part. Release the tension spring. Set the release lever to the vertical (Rear Push tractor) or forward (Push tractor) Disengage the timing belt from the CR motor pinion and hang it on the hanger below.

  • Page 86: Pf Gear Train Disassembly

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.3 PF Gear Train Disassembly Spur Gear, 15 Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Frame Assy Right Spur Gear, 34.5 Remove the CR motor. (See 4.2.9.1 "CR Motor Removal".) Remove the PF motor. (See 4.2.9.2 "PF Motor Removal") Remove the panel harness from the right sub frame of the printer mechanism.

  • Page 87: Pg (Platen Gap) Detector Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.4 PG (Platen Gap) Detector Removal 4.2.9.5 Release Detector Removal Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Remove 2 clips of PG detector attached to the left frame of the printer mechanism and Remove 2 clips of Release detector attached to the right frame of the printer remove the detector.

  • Page 88: Front Pe (Paper End) Detector Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.6 Front PE (Paper End) Detector Removal 4.2.9.7 Front PE (Paper End) Detector Removal Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Remove 2 clips of front PE detector attached to the rear paper guide assembly and Release 2 clips of rear paper guide assembly attached rear PE detector.

  • Page 89: Carriage Assembly Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.8 Carriage Assembly Removal Rotate the adjust parallel bushing until the tab (in the figure, the tab is not visible, for it is on the back side from this view) enabled to come out of the cutout section of the rear Remove the printer mechanism.
  • Page 90 EPSON LQ-570e/LQ-580 Revision C When attaching the timing belt to the carriage assembly, secure the timing belt using the left and light clips of the carriage assembly as shown below. C l i p T I M I N G B E L T Figure 4-25.

  • Page 91: Rear Paper Guide Assembly Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.9 Rear Paper Guide Assembly Removal Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) Remove the upper head cable and the lower head cable from the printhead and remove the printhead. (See 4.2.1 "Pre-disassembly Procedures".) Remove the platen cover and remove platen.

  • Page 92: Ribbon Drive (Rd) Assembly Removal

    EPSON LQ-570e/LQ-580 Revision C 4.2.9.10 Ribbon Drive (RD) Assembly Removal C B S - T i g h t C ( P 2 ) ( 3 x 8 , F / Z N ) Remove the printer mechanism. (See 4.2.7 "Printer Mechanism Removal".) R i b b o n D r i v e A s s e m b l y Remove the upper head cable and the lower head cable from the printhead.

  • Page 93: Chapter 5 Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 94: Adjustment Overview

    EPSON LQ-570e/LQ-580 Revision C 5.1 Adjustment Overview 5.1.2 Adjustment Tools The following table shows the tools required for each adjustment. 5.1.1 Required Adjustment Table 5-2. Required Adjustment Tool This section describes what adjustments are required after any part is removed or replaced.

  • Page 95: Adjustment And Resetting The Printer

    EPSON LQ-570e/LQ-580 Revision C 5.2 Adjustment and Resetting the Printer 5.2.1 Parallel Adjustment The tool requred in the parallel adjustment is; Platen Parallelism Meauring Fixture #F735 (ASP Code: 1054655) When the platen is replaced, the parallel adjustment must be performed in the following order.

  • Page 96: Platen Gap Adjustment

    EPSON LQ-570e/LQ-580 Revision C 5.2.2 Platen Gap Adjustment NOTE: Tightening Torque is 14 to 16 kg/cm. The adjust gap lever and the guide CR shaft must be firmly held by fixture. The tools requred in the platen gap adjustment are;...

  • Page 97: Factory Setting

    To change the choice to the other market after selection, you may press “ESC” key Operating System selet menu appears. Type “G” to run GWbasic. only. The market setting menu appears again. An example (for EUR) is shown below: Printer Name inputting menu appears. Input “LQ-570e or LQ-580”. Table 5-3. Market List Destination...
  • Page 98 EPSON LQ-570e/LQ-580 Revision C ↑ ↓ The process selection menu appears. Move the cursor using “ ” or “ ” key to select “In line” and press “Enter” key. 11. After the test pattern is printed out, turn off the printer once to install the factory setting into the EEPROM.

  • Page 99: Bi-D Adjustment

    EPSON LQ-570e/LQ-580 Revision C 5.2.4 Bi-D Adjustment 5.2.4.2 Bi-d Adjustment Method Bi-d. adjustment method is as follows. Bi-d. sdjustment can be adjusted by users. Turning the print on while pressing Pause switch. 5.2.4.1 Bi-d Specifications The guide to adjust Bi-d. alignment, Pattern No. and Font LED status as well as the first alignment pattern is printed.
  • Page 100 EPSON LQ-570e/LQ-580 Revision C Fix the selected number by pressing Font switch. Selected number is fixed and next alignment pattern is printed. Repeat (2) to (3) until finishing Bi-d. adjustment for LQ mode. Following adjustment is executed. 1. Bi-d. adjustment for draft mode.

  • Page 101: Chapter 6 Maintenance

    C H A P T E R MAINTENANCE...

  • Page 102: Preventive Maintenance

    The influence that oil and grease give is great especially in low temperature. NOTE: Lubrication must be applied during the reassembly process. Therefore, EPSON has been tested and analyzed various oil and grease exten- sively and chooses the best one for that print.

  • Page 103: Lubrication

    EPSON LQ-570e/LQ-580 Revision C 6.2 Lubrication Lubricate G-26 on the 3 shafts of Combination Gear, 6.6, 18 RD housing. (1/2 grain of rice) Combination Gear 6.9, 15 Lubricate G-26 on the Spur Gear, 34.5. (whole size of grains of rice) Lubricate G-26 on the shaft of RD ratchet.
  • Page 104 EPSON LQ-570e/LQ-580 Revision C Lubricate G-26 between Leaf Spring Soak O-2 oil into Oil Pad. 8.2 x 0.25 x 15 and PF Shaft Holder. (0.65cc to 0.75cc) (1/2 grain of rice) Lubricate G-26 between Plain Washer 8.2 x 0.5 x 15 and PF Shaft Holder.
  • Page 105 EPSON LQ-570e/LQ-580 Revision C Lubricate G-26 over the P.G Adjusting holes. (1/2 grain of rice into all holes on by one + E7) Lubricate G-26 to the place where Roller PF Drive inserted to the upper hole. (1 grain of rice) Figure 6-7.

  • Page 106: Chapter 7 Appendix

    C H A P T E R APPENDIX...

  • Page 107: Connector Summary

    EPSON LQ-570e/LQ-580 Revision C 7.1 Connector summary Table 7-1. Connector Summary Board Connector No. Description The primary components are connected as shown below; C293MAIN Board Parallel I/F Type-B I/F (Option) C293MAIN Printer Mechanism DC input, Power On/Off Board M-5T10-100 C293 PSB/PSE...
  • Page 108 EPSON LQ-570e/LQ-580 Revision C The following tables are connector pin assignment. Table 7-3. Connector Pin Assignment-CN2 Table 7-2. Connector Pin Assignment-CN1 Pin No. Signal Name Function Pin No. Signal Name Function Strobe pulse. Input data is latched at falling edge of the...
  • Page 109 EPSON LQ-570e/LQ-580 Revision C Table 7-3. Connector Pin Assignment-CN2 Table 7-6. Connector Pin Assignment-CN5 Pin No. Signal Name Function Pin No. Signal Name Function Data bus bit 1 SIGNAL Release Detector signal Data bus bit 0 Ground Table 7-4. Connector Pin Assignment-CN3 Table 7-7.
  • Page 110 EPSON LQ-570e/LQ-580 Revision C Table 7-10. Connector Pin Assignment-CN9 Table 7-12. Connector Pin Assignment-CN11 Pin No. Signal Name Function Pin No. Signal Name Function +35V +35V HEAD5 #5 Head Data +35V +35V HEAD1 #1 Head Data 9 - 10 Ground...
  • Page 111 EPSON LQ-570e/LQ-580 Revision C Table 7-13. Connector Pin Assignment-CN12 Pin No. Signal Name Function PF Motor phase A PF Motor phase B PF-A PF Motor phase /A PF-B PF Motor phase /B Table 7-14. Connector Pin Assignment-CN13 Pin No. Signal Name...

  • Page 112: Eeprom Address Map

    EPSON LQ-570e/LQ-580 Revision C 7.2 EEPROM Address Map Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting Backup Area 00H,01H (reserved) 0000H 0000H 02H-05H Driving Line count for ribbon change timing 0 to 0FFFFFFFFH(minutes) See Remote spec TLcmd...
  • Page 113 EPSON LQ-570e/LQ-580 Revision C Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting 22H,23H Character table selection 0:PC 437 12:PC 853 24:PC 774 0000H 0000H 1:PC 850 13:PC 855 25:ISO8859-2 (PC 437) 2:PC 860 14:PC 857...
  • Page 114 EPSON LQ-570e/LQ-580 Revision C Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting 3AH,3BH (reserved) 0000H 0000H Font selection 0:Roman 4:Prestige 00H(Roman) 00H(Roman) 1:Draft 5:Script 2:Sans Serif 6:Others (Default Setting Font) 3:Courier Pitch selection 0:10cpi 3:17cpi...
  • Page 115 EPSON LQ-570e/LQ-580 Revision C Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting Panel mask pattern 1 b0:LOAD/EJECT function b1:LF/FF function b2:TEAR OFF/BIN Function b3:Micro Adjust function b4:(reserved) b5:(reserved) b6:(reserved) b7:(reserved) Panel mask pattern 2 b0:Font Selection...
  • Page 116 EPSON LQ-570e/LQ-580 Revision C Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting b0-b2: *ACK/*BUSY width *ACK/ *BUSY width 2/2+3 2/1+3 4/4+3 4/2+3 6/6+3 6/3+3 8/8+3 8/4+3 10/10+3 10/5+3 *ACK timing data 20/20+3 20/10+3 40/40+3 40/20+3...
  • Page 117 EPSON LQ-570e/LQ-580 Revision C Table 7-15. EEPROM Address Map Address Data Data Format Q-pit data Factory Setting IBM character table 0: Table2 1: Table1 Fatal Error (Reserved) Area 3 Vp35 adjustment value Vp35 adjustment value(complement of 70H) Bi-d adjustment valuefor high speed draft /draft -12 to +12 by 0.0353mm (1/720 inch)

  • Page 118: Components Layout

    EPSON LQ-570e/LQ-580 Revision C 7.3 Components Layout Figure 7-2. C293MAIN Component Layout Appendix Components Layout...
  • Page 119 EPSON LQ-570e/LQ-580 Revision C Figure 7-3. C293PSB Component Layout Appendix Components Layout...
  • Page 120 EPSON LQ-570e/LQ-580 Revision C Figure 7-4. C293PSE Component Layout Appendix Components Layout...

  • Page 121: Exploded Diagram

    EPSON LQ-570e/LQ-580 Revision C 7.4 Exploded Diagram (For AC220V/230V/240V) (121) LQ-570e / LQ-580 No.01 Rev.01 10186 Appendix Exploded Diagram...
  • Page 122 EPSON LQ-570e/LQ-580 Revision C LQ-570e / LQ-580 No.02 Rev.01 10186 Appendix Exploded Diagram...

  • Page 123: Parts List

    EPSON LQ-570e/LQ-580 Revision C 7.5 Parts List Table 7-16. Parts List Reference Part Name Number Table 7-16. Parts List C.B.S-TITE SCREW Reference Part Name Number PAPER GUIDE ASSY.,FRONT HOUSING ASSY.,LOWER GROUNDING PLATE,I/F FOOT GROUNDING PLATE,I/F,UPPER HOUSING ASSY.,UPPER FERRITE CORE,FPC-25-12 COVER ASSY.,PRINTER...
  • Page 124 EPSON LQ-570e/LQ-580 Revision C Table 7-16. Parts List Table 7-16. Parts List Reference Reference Part Name Part Name Number Number BASE RUBBER SHAFT,TR,DRIVE STOPPER,LEFT SHAFT,TR,GUIDE STOPPER,RIGHT FRAME,TR,LEFT;W MOTOR, PF FRAME,TR,RIGHT;W HARNESS,PG LEVER,TR,LEFT;W DETECTOR,HP LEVER,TR,RIGHT;W HARNESS,HP PAPER SUPPORT CONNECTOR SWITCH;B SPUR GEAR,20...
  • Page 125 EPSON LQ-570e/LQ-580 Revision C Table 7-16. Parts List Table 7-16. Parts List Reference Reference Part Name Part Name Number Number FRAME, FRONT HEXAGON NUT FRAME, SUB, RIGHT PLAIN WASHER SHAFT,CR,GUIDE C.B.SCREW BUSHING,PARALLEL,ADJUST C.B.SCREW LEVER,GAP,ADJUST C.B.S. SCREW CAP,LEVER;W SHAFT,MOUNT,CR GROUNDING PLATE,MECHA...

  • Page 126: Circuit Diagrams

    EPSON LQ-570e/LQ-580 Revision C 7.6 Circuit Diagrams C293 MAIN BOARD C293 PSB BOARD C293 PSE BOARD Appendix Circuit Diagrams...

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