Epson LX-300+ Service Manual
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Epson LX-300+ Service Manual

9-pin serial impact dot matrix printer
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SERVICE MANUAL

9-pin Serial Impact Dot Matrix Printer
EPSON LX-300+/1170
LX-300+
LX-1170
®
SEDM997003

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Summary of Contents for Epson LX-300+

  • Page 1: Service Manual

    SERVICE MANUAL 9-pin Serial Impact Dot Matrix Printer EPSON LX-300+/1170 LX-300+ LX-1170 ® SEDM997003...
  • Page 2 SEIKO EPSON CORPORATION. o 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

    Provides preventive maintenance procedures and the related to a specific subject, or comment on the results achieved through a previous action. lists of Epson-approved lubricants and adhesives required for servicing the product. Indicates an operating or maintenance procedure, practice or...
  • Page 5 Revision Status Revision Issued Date Description May 11, 2000 First Release Revision: • Page -70 “Warning and caution messages” added. April 5, 2001 • Page -107 “EEPROM Address Map” added. • Page -111 “Component Layout” added. • Page -124 “C294MAIN-B Board” added. Revision: April 19, 2001 •...

  • Page 6: Table Of Contents

    CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.5.1 ESC/P2 ....................... 31 1.5.2 IBM 2390 Plus Emulation ................. 32 1.1 FEATURES ......................9 1.5.3 Bi-Directional Commands ................. 33 1.5.3.1 Reply Printer Status ................35 1.2 SPECIFICATIONS ..................10 1.5.3.2 Packet commands ................36 1.2.1 Printing Specification ................
  • Page 7 2.3.2 C294PSB / C294PSE Board ..............58 4.2.7.10 PF Motor Assembly Removal ............86 2.3.2.1 Electric Circuit .................. 58 4.2.7.11 Paper Feed Mechanism Disassembly ..........87 4.2.7.12 Paper Guide Removal ..............88 Chapter 3 Troubleshooting Chapter 5 Adjustment 3.1 Overview ......................61 5.1 Overview ......................

  • Page 8: Chapter 1 Product Description

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

  • Page 9: Features

    ESC/P and IBM 2380 Plus emulation Copy capability: 1 original + 4 copies EPSON LX-300+/1170 is a 9 pin serial impact dot matrix printer. The main difference Control panel functions: Font, Pause, Tear off, LF/FF, Load/ Eject, between LX-300+ and LX-1170 is the wedth : 80 colums for LX-300+ and 136 colums for Micro Adjust, Self test, Data dump LX-1170.

  • Page 10: Specifications

    LX-300+/1170 Revision C 1.2 SPECIFICATIONS Table 1-1. Print Speed and Printable Columns Printing mode Character pitch (cpi) Printable columns Printing speed (cps) 1.2.1 Printing Specification Draft condensed 137(LX-300+) 233(LX-1170) Print method: Impact dot matrix 160(LX-300+) Number of pins: 9 pins 273(LX-1170) Print pin arrangement: 9 x 1...
  • Page 11 LX-300+/1170 Revision C Table 1-2. Resolution Horizontal density Vertical density Printing mode Adjacent dot print (dpi) (dpi) Bit image 60, 72, 80, 90 or 120 120 or 240 Control code: ESC/P and IBM 2380 Plus emulation (Refer to 1.5 "Control codes") PRODUCT DESCRIPTION SPECIFICATIONS...
  • Page 12 EPSON Draft 10cpi, 12cpi, 15cpi PC852 (East Europe) PC857 (Turkish) EPSON Roman 10cpi, 12cpi, 15cpi, Proportional PC866 (Russian) EPSON Sans serif 10cpi, 12cpi, 15cpi, Proportional PC869 (Greek) MAZOWIA (Poland) EPSON OCR-B 10cpi Code MJK (CSFR) ISO 8859-7 (Latin / Greek)
  • Page 13 EPSON Draft Character table Bitmap font version PC 437(US, Standard Europe) EPSON Roman Standard Italic table EPSON Draft EPSON Sans serif Version PC 437 (US, Standard Europe) EPSON Roman EPSON OCR-B EPSON Sans serif PC 860(Portuguese) PC 850 (Multilingual) EPSON Draft...

  • Page 14: Paper Feeding

    LX-300+/1170 Revision C 1.2.2 Paper Feeding Table 1-4. Release Lever Lever position Paper path/ Feeder Paper/ Media Feeding method: Friction feed (rear) Push tractor feed (rear) Tractor Push tractor feed (rear) Continuous paper (Single sheet and Push and Pull tractor feed (rear) Multi part) Pull tractor feed (rear, bottom) Push and Pull tractor feed (rear)
  • Page 15 LX-300+/1170 Revision C Table 1-5. Paper Thickness Lever LX-300+ LX-1170 Paper thickness Paper thickness Paper Paper Lever (inch) (inch) thickness thickness position (mm) (mm) Min. Max. Min. Max. over 0.39 over 0.26 (0.0154) (0.0205) (0.0102) (0.0130) up to 0.52 up to 0.33 over 0.33 (0.0130) (0.0154)

  • Page 16: Electrical Specification

    LX-300+/1170 Revision C 1.2.3 Electrical Specification 1.2.4 Environmental Condition 120 V version Temperature: 5 to 35 ° C (operating 15 to 25 ° C (operating Rated voltage: AC 120V -30 to 60 ° C (non-operating) Input voltage range: AC 99 to 132 V Humidity: 10 to 80% RH (operating Rated frequency range:...

  • Page 17: Safety Approvals

    LX-300+/1170 Revision C Cyan 0.7 million characters (Draft 10 cpi, 14 dots/character) Yellow 0.5 million characters (Draft 10 cpi, 14 dots/character) 1.2.7 Safety Approvals 120 V version Safety standards: UL1950 CSA C22.2 No. 950 EMI: FCC part15 subpart B class B CSA C108.8 class B 230 V version Safety standards:...

  • Page 18: Printable Area

    LX-300+/1170 Revision C 1.2.9 Printable Area Table 1-6. Printable Area for Cut Sheet Cut sheets Single Sheet Multi Part PW (Width) Refer to 1.7 "Paper Refer to 1.7 "Paper Specifications" Specifications" PL (Length) Refer to 1.7 "Paper Refer to 1.7 "Paper Specifications"...
  • Page 19 LX-300+/1170 Revision C Envelop Continuous paper P e r f o r a t i o n P r i n t a b l e A r e a P r i n t a b l e A r e a P e r f o r a t i o n Figure 1-3.
  • Page 20 LX-300+/1170 Revision C Table 1-8. Printable Area for Continuous Paper Roll paper Continuous Paper RM (Right Margin) LX-300+: 13 mm or more (PW<=254 mm) 24mm or more(PW=254 mm) LX-1170: 13 mm or more (PW<=377.8mm) 18 mm or more(PW=406.4 mm) TM (Top Margin) 4.2 mm or more BM (Bottom Margin) 4.2 mm or more...

  • Page 21: Interface Specifications

    LX-300+/1170 Revision C 1.3 Interface Specifications LX-300+/1170 provides bi-directional 8 bit parallel interface and serial interface. Optional interface board is not supported on this model. 1.3.1 Parallel Interface (Forward Channel) Transmission mode: 8 bit parallel IEEE-1284 compatibility mode Adaptable connector: 57-30360 (Amphenol) or equivalent Synchronization: -STROBE pulse...
  • Page 22 LX-300+/1170 Revision C BUSY signal is active (HIGH level) under the conditions below: Table 1-12. Connector Pin Assignment and Signals (Forward Channel) In the process of receiving data Return Signal Pin No. In/Out Functional Description Name In the condition of being input buffer full In the condition of being -INT signal active (low level) DATA7 bit6...

  • Page 23: Parallel Interface (Reverse Channel)

    Device ID: The printer sends following device ID string when it is requested. When IEEE1284.4 is enabled; DATA8 bit7:MSB PtrClk Printer clock signal. [00H][4EH] [00H][4EH] MFG: EPSON; MFG: EPSON; PtrBusy/DataBit- Printer busy signal and reverse channel CMD: ESCPL2,PRPXL24,BDC,D4; CMD: ESCP9,PRPII9,BDC,D4; transfer data bit 3 or 7. MDL: LX-300+;...

  • Page 24: Serial Interface

    LX-300+/1170 Revision C Table 1-13. Connector Pin Assignment and Signals (Reverse Channel) Table 1-14. Connector Pin Assignment and Signals Return Signal Name In/Out Functional Description Pin No. Signal Name In/Out Functional Description Transmit data. Chassis Chassis GND. Indicates that the printer is ready to receive data or not. 16, 33, Signal GND.

  • Page 25: Interface Selection

    LX-300+/1170 Revision C 1.3.4 Interface Selection Auto: Communication is carried out in the conventional mode until a magic string The printer has 2 interfaces; the parallel interface and serial interface. These interfaces are (1284.4 synchronous commands) is received. By receiving a magic string, selected manually by Default Setting or selected automatically.

  • Page 26: Operation

    LX-300+/1170 Revision C 1.4 Operation 1.4.1.1 Switches Operation in normal mode In normal mode, pressing panel switches executes following function; 1.4.1 Control Panel Table 1-15. Operation in Normal Mode 4 switches and 4 LEDs are on the panel as shown below. Switch Function -Alternates printing and non-printing status.

  • Page 27: Led

    LX-300+/1170 Revision C Operation in default setting mode *3 Font (Green) The following switches are used in default setting mode; -The status of Font selection is displayed by 2 Font LEDs when continuous paper is out of the Tear-off position. Table 1-17.

  • Page 28: Functions

    LX-300+/1170 Revision C 1.4.2 Functions Data Dump Starts the data dump mode, in which all the input data are printed as hexadecimal numbers and corresponding characters. 1.4.2.1 Usual Operation Clear EEPROM Pause Resets the printer to the factory default setting, which is not always proper setting -This switch alternates printer activity between printing and non-printing.

  • Page 29: Bi-D. Adjustment

    LX-300+/1170 Revision C Select setting value by LF/FF button. Table 1-19. Setting Menu Tear Off/ Bin LEDs and Paper Out LED show that menu’s value by status of On/Off/ Item Setting / Value *2 Blink/2-Blinks. That value can be changed by pressing Tear Off/ Bin button and the LEDs status of On/Off/Blink/2-Blinks will be changed as the button is pressed.

  • Page 30: Errors

    LX-300+/1170 Revision C Fix the selected number by pressing Tear Off switch. Selected number is fixed and the next alignment pattern is printed. Repeat step 2 to 3 until finishing Bi-d adjustment for NLQ mode. Following adjustment is executed. - Bi-d. adjustment for high speed draft mode - Bi-d.

  • Page 31: Control Codes

    LX-300+/1170 Revision C 1.5 Control codes Table 1-20. ESC/P2 Classification Operation Command 1.5.1 ESC/P2 Font enhancement Double-Width ESC W, DC4, SO Condensed DC2, SI Table 1-20. ESC/P2 Double-height ESC w Classification Operation Command Double-Strike ESC G, ESC H General Operation Initialize Printer ESC@ Super-/ Subscript...

  • Page 32: Ibm 2390 Plus Emulation

    LX-300+/1170 Revision C 1.5.2 IBM 2390 Plus Emulation Table 1-21. IBM 2390 Plus emulation Classification Operation Command Table 1-21. IBM 2390 Plus emulation Font selection Pitch DC 2, ESC P, ESC: Classification Operation Command Bold Font ESC E, ESC F General Operation NUL, DC3 Master Select...

  • Page 33: Bi-Directional Commands

    The printer sends the following ID string in reply to this command. Table 1-22. Bi-Directional Commands Function Code/ Parameter Save @EJL[SP]ID[CR][LF] @EJL[SP]ID[CR][LF] MFG: EPSON; MFG: EPSON; Enter Remote-1 ESC”(R”08H 00H 00H “REMOTE1” CMD: ESCPL2,PRPXL24,BDC; CMD: ESCP9,PRPII9,BDC; Exit Remote-1 ESC 00H 00H 00H MDL: LX-300+;...
  • Page 34 LX-300+/1170 Revision C Table 1-25. NLSP ver. only Table 1-23. Note for Table 1-22 Character table Character table m1 set by AT/CT m2 set by AT m3 set by AT PC866 UKR PC 708 PC869 PC720 All parameters that can be set PCAR_864 ISO 8859-2 *4 m2 and m3 apply to the following ID number.

  • Page 35: Reply Printer Status

    LX-300+/1170 Revision C 1.5.3.1 Reply Printer Status Table 1-26. Bi-Directional Commands Function Code/ Parameter Save The printer sends back one of the five strings shown below according to the printer status at that time every few seconds. Select control language “PM”...

  • Page 36: Packet Commands

    LX-300+/1170 Revision C 1.5.3.2 Packet commands Paper_path Table 1-29. Paper_Path Table 1-31. Packet Commands paper_path “<paper_path code>” Function Code Continuous paper (rear) “0000” Device ID request “di” 01H 00H 01H Continuous paper (bottom) “0001” Device ID reply (*1) “@EJL” SP “ID” CR LF <Device ID string> FF Cut sheet (rear) “0200”...

  • Page 37: Initialization

    LX-300+/1170 Revision C 1.6 Initialization Power-on initialization The initialization of this level is activated by power-on or cold-reset command (remote RS command). This initialization is; to initialize the printer mechanism. to execute Operator initialization. Operator initialization The initialization of this level is activated by -INT signal (negative pulse). This initialization is;...

  • Page 38: Paper Specifications

    LX-300+/1170 Revision C 1.7 Paper Specifications Cut sheet (multi part) Table 1-33. Cut Sheet (Multi part) Cut sheet (single sheet, not multi part) Minimum Maximum Table 1-32. Cut Sheet (single sheet, not multi part) (10.1) (inch) (3.9) Width Manual insertion CSF single-bin (mm) (257)
  • Page 39 LX-300+/1170 Revision C Envelope Continuous paper (Single sheet and Multipart) Table 1-34. Envelope Table 1-35. Continuous Paper (Single sheet and Multi Part) Rear Entry Bottom Entry Minimum Maximum (inch) (6.5) Min. Max. Min. Max. Width (mm) Envelop (10) (10) (inch) Width (No.
  • Page 40 LX-300+/1170 Revision C Labels 63.5 mm (2.5 inch) min. Table 1-36. Continuous Paper with Labels Rear Entry Bottom Entry 23.8 mm Label Min. Max. Min. Max. (15/16inch) min. Label size See the figure below. R_2.5 mm (0.1 inch) min. (10) (inch) Base sheet width (mm)

  • Page 41: Physical Specifications

    LX-300+/1170 Revision C 1.8 Physical Specifications Physical Specifications (CSF) Dimensions: 366 x 441 x 370 mm (WxDxH) 1.8.1 Physical Specifications for LX-300+ Mass: Approx. 4.6 kg Appearance: See the figure below. Physical Specifications (Without pull tractor) Dimensions: 366 x 275 x 159 mm (WxDxH) Mass: Approx.

  • Page 42: Physical Specifications For Lx-1170

    LX-300+/1170 Revision C 1.8.2 Physical Specifications for LX-1170 Physical Specifications (CSF) Dimensions: 366 x 441 x 370 mm (WxDxH) Physical Specifications for World Wide (Without pull tractor) Mass: Approx. 4.6 kg Dimensions: 366 x 275 x 159 mm (WxDxH) Appearance: See the figure below.

  • Page 43: Accessories

    LX-300+/1170 Revision C 1.9 Accessories Table 1-38. Enclosed Parts Enclosed Items Quantity User's manual Driver disk Ribbon cartridge (Black) Power supply cable (230 V Version) Table 1-39. Expendables Enclosed Items Description Ribbon cartridge (Black: For LX-300+) #8750 Ribbon cartridge (Black: For LX-1170) #8755 Ribbon pack (Black) #8758...

  • Page 44: Chapter 2 Operating Principles

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

  • Page 45: Overview

    LX-300+/1170 Revision C 2.1 Overview LX-300+/1170 consists of the printer mechanism and electric circuit boards. Printer Power Supply Mechanism Main Board Board C294MAIN/ C294PSB/PSE C294MAIN-B Panel Board C294PNL Figure 2-1. Component Unit Circuit board Main (control circuit): C294MAIN(LX-300+) C294MAIN-B Board(LX-300+/LX-1170) Power: C294PSB / C294PSE Board Panel:...

  • Page 46: Printer Mechanism

    LX-300+/1170 Revision C 2.2 Printer Mechanism Ribbon mechanism Color ribbon drive mechanism (option) The following is main components of the LX-300+/1170 printer mechanism. Platen gap adjustment mechanism Adjust lever, Platen gap detector Printhead Paper feed mechanism Carriage mechanism PF motor, rear paper end (RPE)detector, bottom paper end (BPE) detector Carriage (CR) motor, Carriage home position (HP) detector Release mechanism Release detector (REL)

  • Page 47: Printhead

    LX-300+/1170 Revision C 2.2.1 Printhead The table below shows the printhead specifications. Table 2-1. Printhead Specifications Item Specification Number of wires φ0.29 mm Diameter of wire See Figure 2-3 "Wire Configuration". Wire configuration Note: The figure is seen from the back of the head facing printing side.

  • Page 48: Carriage Mechanism

    LX-300+/1170 Revision C 2.2.2 Carriage Mechanism The following is the components of the LX-300+/1170 carriage mechanism and its explanation. (Refer to Figure 2-2.) Carriage: Mounts the printhead. CR motor: Drives carriage to the printing column direction. Timing belt: Transfers the drive from the CR motor to the carriage. Carriage guide shaft: Shifts the carriage parallel to the platen.
  • Page 49 LX-300+/1170 Revision C Carriage Speed Mode Current limit (A/phase) Adjacent Carriag CR drive Phase Head drive Carriage speed High or Printing e speed frequency drive frequency Printing speed mode at power low speed Front High Normal Rear mode resolution mode [Hz] [pps] [Hz]...

  • Page 50: High Speed Skip Method

    LX-300+/1170 Revision C 2.2.3 Ribbon Mechanism CARRIAGE HOME POSITION (HP) DETECTOR 2.2.3.1 Ink Ribbon Shifting Mechanism The table below is the HP detector specifications. Ink ribbon shifting mechanism: CR motor drives timing belt and the timing belt driven Table 2-5. HP detector Specifications pulley drives the ribbon shifting gears.
  • Page 51 LX-300+/1170 Revision C Color ribbon drive circuit RIBBON CARTRIDGE DETECTOR Ribbon detector detects if the color ribbon is installed or not. Detect Timing Ribbon detector When the power is applied. When recovering from the economy mode. When the printing is started. Table 2-7.

  • Page 52: Platen Gap Adjustment Mechanism

    LX-300+/1170 Revision C COLOR MECHANISM INITIALIZATION PLATEN GAP (PG_SW) DETECTOR The printer mechanism initializes when the power is applied or when recovering from the The following is PG_SW specification. energy saving mode. Table 2-9. PG_SW Detector Specifications Color mechanism initialization Item Specification Color mechanism initialization shifts color mechanism for the black ink area to be...

  • Page 53: Paper Feed Mechanism

    LX-300+/1170 Revision C 2.2.5 Paper Feed Mechanism PF MOTOR This mechanism consists of paper feed motor (PF motor), paper feed gears, platen, rear LX-300+/1170 uses a stepping motor for PF motor. Open loop control switches the phases paper end detector, bottom paper end detector and push tractor unit. (Refer to Refer to according to the setting period and this mechanism loads and carries paper to the appointed Figure 2-2.) position and eject paper.

  • Page 54: Page Length Measurement

    LX-300+/1170 Revision C 2.2.5.1 Page Length Measurement RPE DETECTOR Page length measurement is a process to convert the following value to the number of RPE detector is installed on the paper path at the back of the printer. The table below shows printing lines.

  • Page 55: Release Mechanism

    LX-300+/1170 Revision C 2.2.6 Release Mechanism The table below shows the release detector specifications. Table 2-13. Release Detector Specifications This mechanism switches the flow of PF motor driving forth between to the friction feed and to the tractor feed. Item Specification Method Mechanical contact method...

  • Page 56: Electrical Circuit Operating Principles

    LX-300+/1170 Revision C 2.3 Electrical Circuit Operating Principles C294 MAIN Board Block Diagram NOTE: CS motor is only avilable for LX-300+. 2.3.1 MAIN Board Electric Circuit C294 MAIN is installed in LX-300+ for initial production, and for later production, the main board is switched to C294 MAIN-B (2 in 1).
  • Page 57 LX-300+/1170 Revision C C294 MAIN-B Block Diagram Figure 2-8. C294 MAIN-B Board Block Diagram (LX-300+/1170) Operating Principles Electrical Circuit Operating Principles...

  • Page 58: C294Psb / C294Pse Board

    LX-300+/1170 Revision C Table 2-14. Main Elements Table 2-14. Main Elements Elements Location Function Elements Location Function M62030 (SANYO), 8 pin RISC C33208 CPU, QFP 128 pin RESET IC • CPU and G/A reset • Outside clock 19.66 MHz/ Inside clock 39.32 MHz CR Motor Driver LB1847 (SANYO) •...
  • Page 59 LX-300+/1170 Revision C Table 2-16. Output Voltage and its Use Output voltage 35 V +5%/ -10% Drive 5 V ± 5% Logic Voltage* NOTE: *: Core voltage of CPU and G/A is 3.3V and it is generated by the regulator IC on the MAIN board form +5VDC. Operating Principles Electrical Circuit Operating Principles...
  • Page 60 C H A P T E R TROUBLESHOOTING...

  • Page 61: Overview

    LX-300+/1170 Revision C 3.1 Overview Troubleshooting This chapter describes how to troubleshoot problems when any problems occurred to the printer. Refer to troubleshooting flowcharts in this chapter to identify a defective part and an appreopreate repair for it. Initialization Check Never touch printhead and any motors right after printing since W A R N I N G Check performance by self-...

  • Page 62: Troubleshooting

    LX-300+/1170 Revision C 3.2 Troubleshooting 3.2.2 Check Performance By Self-Check Function LX-300+/1170 has self-check function and it supervises the printer condition constantly. If 3.2.1 Initialization Check any problem occurs, it indicates error by indicator LED and in some cases it notifies error to the operator by beeping the buzzer.

  • Page 63: Identify Problems From Symptoms

    LX-300+/1170 Revision C 3.2.3 Identify Problems From Symptoms Release Lever Error This error will be indicated when wrong release lever operation is performed. For This section procedure to identify the problems from the abnormal symptoms. Basically example, if you change the release lever setting when the printer already starts unit repair or replacement should be performed, but if necessary parts level replacement feeding paper, this error will be generated.
  • Page 64 LX-300+/1170 Revision C Table 3-3. Control Panel LED Does Not Light On. Table 3-5. When Power is Applied, the Printer Becomes Fatal Error. Cause Check Point Solution Cause Check Point Solution Check the electric circuit and CR motor harness is Is CR motor harness Blowout of a fuse on Is a fuse on the power...
  • Page 65 LX-300+/1170 Revision C Table 3-6. Self Test Print is Abnormal. Table 3-9. Printing Operation is Abnormal When it is On-Line. (Self-Test is Normal.) Cause Check Point Solution Ribbon mechanism is Is ribbon advanced Cause Check Point Solution Replace the ribbon mechanism parts. defective.

  • Page 66: Unit And Parts Check

    LX-300+/1170 Revision C 3.2.4 Unit and Parts Check This section describes the checking method of the printhead, motors and sensors to find the defective units and parts. W A R N I N G When repairing the unit, make sure to turn the printer off and plug off the power cable except when this manual specifies to keep the power on.

  • Page 67: Motor Check

    LX-300+/1170 Revision C 3.2.4.2 Motor Check 3.2.4.3 Sensor Check By measuring the direct current resistance of the motor coil, you can check if the motor is When the sensor is connected mechanically, you can check the sensor by its conductivity. all right.

  • Page 68: Printhead Driver Check

    LX-300+/1170 Revision C 3.2.4.4 Printhead Driver Check Simple check of the printer driver (Q3 ~ Q11) can be done by the following method. Table 3-13. Printhead Driver Check Item Operation Specification 1. Set the multimeter to the resistance measuring range. The resistance Printer driver 2.

  • Page 69: Chapter 4 Disassembly And Assembly

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

  • Page 70: Overview

    LX-300+/1170 Revision C 4.1 Overview 4.1.2 Tools The table below lists the tools recommended to use for disassembly and assembly and This chapter explains the disassembly and assembly of LX-300+/1170.Read the precautions adjustment. Use only tools specified here. below before disassembling and assembling the printer. Table 4-1.
  • Page 71 LX-300+/1170 Revision C Table 4-3. List of Screws Screw Name Screw Name C.B.P., Tite, 3x10 F/ZN C.P., Screw, 3x4 F/ZN C.P.B., Screw, 3x14 F/ZN C.B(O), Screw, 4x8 F/ZN C.B.S., Screw, 3x4 F/Zn Jack Socket C.B.B., (W(13), 3x14 F/ZN Disassembly and Assembly Overview...

  • Page 72: Service Checks After Repair

    LX-300+/1170 Revision C 4.1.3 Service Checks After Repair Table 4-4. Check List for Repaired Printer Category Component Item to Check Check Before returning the printer back to the user, use the check list below to confirm the quality ¨OK ¨NG Version Up ROM version Latest ROM version ________...

  • Page 73: Disassembly And Assembly

    LX-300+/1170 Revision C 4.2 Disassembly and Assembly The figure below is the disassembly flowchart for main component. This section explains the disassembly and assembly of Product Name. Unless otherwise START specified, assembly can be done in the reverse order of the disassembly procedure. Anything that service person should pay attention to is described under “Check Point”.

  • Page 74: Printhead Removal

    LX-300+/1170 Revision C 4.2.1 Printhead Removal Printhead Remove the cover of the printer. C.P.B., Screw, 3x14 F/ZN Remove 1 screw (C.P.B., Screw, 3x14 F/ZN; Torque 0.59-0.78N.m) securing the printhead to the carriage assembly. Lift the printhead a little bit. Unlatch 2 hooks securing the printhead FFC to carriage unit.

  • Page 75: Upper Housing Removal

    LX-300+/1170 Revision C 4.2.2 Upper Housing Removal C H E C K When installing the upper housing, be sure to insert LEDs on Remove platen knob, cover assembly, printer, tractor unit and paper eject unit. P O I N T the panel board to the LED holes of the upper housing.

  • Page 76: Printer Mechanism Removal

    LX-300+/1170 Revision C 4.2.3 Printer Mechanism Removal LX-1170: Remove 4 screws with washer (C.B.B., (W(13), 3x14 F/ZN) securing the printer mechanism to the lower housing. Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) See Figure 4-4 below. LX-300+: Remove 3 screws (C.B.P., Tite, 3x10 F/ZN;Torque 0.78-0.98 N.M.) securing the upper shield plate to the lower housing.
  • Page 77 LX-300+/1170 Revision C Lift the printer mechanism a little bit and remove harnesses from the main board assembly. Printer Mechanism Main Board Assembly Figure4-5. Harness Removal Remove the printer mechanism. A D J U S T M E N T Perform Bi-D adjustment after removing the printer mechanism.

  • Page 78: Board Assembly And Panel Removal

    LX-300+/1170 Revision C 4.2.4 Board Assembly and Panel Removal 4.2.5 C294MAIN/MAIN-B Board Assembly Removal Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) Remove the panel FFC from the connector of panel board assembly. Remove the printer mechanism.

  • Page 79: C294 Power Supply Board Assembly Removal

    LX-300+/1170 Revision C 4.2.6 C294 Power Supply Board Assembly Removal A D J U S T M E N T When the main board assembly is replaced, perform destination Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) R E Q U I R E D setting and Bi-D adjustment.

  • Page 80: Printer Mechanism Disassembly

    LX-300+/1170 Revision C 4.2.7 Printer Mechanism Disassembly Power Switch C.B.P., Tite, 3x10 F/ZN C.B.P., Tite, 3x10 F/ZN This section explains the disassembling procedure of the printer mechanism. The disassembling procedure is shown in the flowchart below. START 4.2.7.1 "CR Motor Assembly Removal"...

  • Page 81: Cr Motor Assembly Removal

    LX-300+/1170 Revision C 4.2.7.1 CR Motor Assembly Removal 4.2.7.2 Platen Removal Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the tension spring, 8.10 and motor bracket and release the tension of the Remove the platen grounding wire from the platen.

  • Page 82: Carriage Unit Removal

    LX-300+/1170 Revision C 4.2.7.3 Carriage Unit Removal Bushing, 11 Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Platen Remove the printhead. (See 4.2.1 "Printhead Removal".) Gear, 34 Remove the timing belt from the carriage installation point. Left frame Carriage Unit Timing Belt Bushing, 11 Platen grounding wire...
  • Page 83 LX-300+/1170 Revision C PG adjust lever CR guide shaft Carriage unit CR guide grounding plate Parallelism adjust bushing Parallelism adjust bushing PG Adjust Lever -- Hook Oil pad Figure4-16. Hook at the PG Adjust Lever Remove the carriage unit along with the CR guide shaft and PG adjust lever from the printer mechanism.

  • Page 84: Ribbon Feed Mechanism Removal

    LX-300+/1170 Revision C 4.2.7.4 Ribbon Feed Mechanism Removal 4.2.7.5 RPE Sensor Removal Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the tension spring, 8.10 from the motor bracket and release the tension of the Remove the hook of the RPE sensor installed at the paper guide.

  • Page 85: Hp Sensor Removal

    LX-300+/1170 Revision C 4.2.7.7 HP Sensor Removal 4.2.7.8 PG Sensor Removal Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Release 2 hooks of the HP sensor securing it to the base frame with tweezers and Release 2 hooks of the PG sensor securing it to the left frame with tweezers and remove the sensor.

  • Page 86: Pf Motor Assembly Removal

    LX-300+/1170 Revision C 4.2.7.10 PF Motor Assembly Removal Remove the harness from the sensor (blue). Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Release lever position sensor (blue) Remove the platen grounding wire from the platen. Remove 1 screw (C.B.P., Tite, 3x10 F/ZN; Torque 0.59-0.78 N.M.) securing the PF motor assembly to the right frame.

  • Page 87: Paper Feed Mechanism Disassembly

    LX-300+/1170 Revision C 4.2.7.11 Paper Feed Mechanism Disassembly Remove the combination gear, 8.5, 25.2 from the right frame. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Combination spring, 1.18 Hook at the right frame Remove the PF motor assembly. (See 4.2.7.10 "PF Motor Assembly Removal".) Plain washer, 5.2 x 0.3 x 10 Combination gear, 8.5, 25.2 Remove the release lever.

  • Page 88: Paper Guide Removal

    LX-300+/1170 Revision C 4.2.7.12 Paper Guide Removal Release 1 hook at the left frame securing the base frame and remove it by pulling it to the rear. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) Remove the platen. (See 4.2.7.2 "Platen Removal".) Remove the carriage unit.
  • Page 89 LX-300+/1170 Revision C Disassembly and Assembly Disassembly and Assembly...

  • Page 90: Chapter 5 Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 91: Overview

    LX-300+/1170 Revision C 5.1 Overview START This chapter explains the adjustment required after disassembling the printer. 5.1.1 Platen Gap Adjustment Move the carriage unit to the left end. Platen gap adjustment is required at the following cases. Printhead is replaced. Is the platen gap Adjust the platen gap at the Carriage is replaced.

  • Page 92: Bi-D Adjustment

    LX-300+/1170 Revision C 5.1.2 Bi-D Adjustment LX-300+: Load and run the adjustment program “Q80A12V.bas”. Input “Q80A12V” and press ENTER. Then input “run”. Adjustment programs here for LX-300+ and LX-1170 are originally used for LX-1170f: Load and run the adjustment program “U10A00V.bas”. production line.
  • Page 93 LX-300+/1170 Revision C ↑ ↓ The program will ask you the production line No. Ignore it and press ENTER. LX-300+: Printer 9/24 pin select screen appears. Use key to shift “>” mark to LX-300+: After pressing ENTER, input “1”(model number) to select LX-300+. the left of “(1) 9 pin”...
  • Page 94 LX-300+/1170 Revision C The destination setting menu appears. Perform settings referring to Table 5-3, Table 5-3. Destination Setting List “Destination Setting List,” on page 92. (MIDDLE EAST) DEFSTD LX-1170 EUR NLSP Conti NLSP EUL NLSP NLSP (240V) EUL NLSP (220V) ↑...
  • Page 95 LX-300+/1170 Revision C ↑ ↓ ↑ ↓ ← → 10. When you select the destination, the select menu below appears. Use key to 12. “Main MENU” appears. Use key or key to shift “>” mark to the left shift “>” mark to the left of “Out Going” and press ENTER. of “(1) Bi-D Adjust”...
  • Page 96 LX-300+/1170 Revision C 14. The following printing pattern which shows each mode number and current Bi-D 17. By changing the VRO value, adjust the Bi -D. Repeat step 14 to 17 until the value “A” values will be printed. becomes within the range below. Refer to Table 5-4, “Bi-D Adjustment Setting Value,”...
  • Page 97 LX-300+/1170 Revision C Table 5-4. Bi-D Adjustment Setting Value Printing Mode Value “A” mode 0 (High Speed draft) Less than 0.25 mode 1 (Draft) Less than 0.25 mode 4 (NLQ) Less than 0.15 18. When you finished adjustment, finish the program by pressing “ESC” several times. This test program used here is originally the program for C A U T I O N production line.
  • Page 98 C H A P T E R MAINTENANCE...

  • Page 99: Maintenance

    G-26 1 grain of rice with platen shaft. 6-12 at the lower temperature. EPSON determines what kind of and how much of oil to be applied based on the various information and analysis. Spur gear 34 G-26 10mm Table 6-1.
  • Page 100 Product Name Revision C Lubrication Points Lubricate G-26 on the 3 shafts and 1 boss of the left frame. G-26, 1/2 grain of rice Lubricate G-26 at 3 places on 3 shafts at Lubricate G-26 on the shaft of the RD the right frame.
  • Page 101 Product Name Revision C Lubricate G-26 to the shaft of the drive PF roller and the rear driven PF roller. Lubricate G-26 into the hole of the right Drive PF roller (4 places) TR (tractor) frame facing to the TR guide shaft and the left TR frame.
  • Page 102 Product Name Revision C Move the carriage around the center, Lubricate G-26 on the installing shaft of then lubricate G-26 on the touching the Combination Gear, 17.5, 27 of the parts of the 2 sides of the frame. right frame. Carriage: Combination gear 17.5, 27: G-26, 40mm x 2 places...

  • Page 103: Chapter 7 Appendix

    C H A P T E R 1 9 APPENDIX...

  • Page 104: Connector Summary

    LX-300+/1170 Revision C 7.1 Connector Summary 7.1.2 Pin Assignments Table 7-1. C294MAIN-B Board Connector Summary 7.1.1 Major Component Unit Connector Function Pins The figure below illustrates how the primary components are connected. Parallel I/F CS motor is only available for LX-300+. Serial I/F HP Detector PE (Rear) Sensor...
  • Page 105 LX-300+/1170 Revision C Table 7-4. Connector Pin Assignments - CN5 Table 7-8. Connector Pin Assignments - CN9 Signal Name Function Signal Name Function RELEASE Release sensor signal Head data 7 Signal ground Head data 1 Head data 5 Table 7-5. Connector Pin Assignments - CN6 Head data 3 Signal Name Function...
  • Page 106 LX-300+/1170 Revision C Table 7-12. Connector Pin Assignments - CN13 Table 7-10. Connector Pin Assignments - CN11 Signal Name Function Signal Name Function LED1 LED1 Paper feed motor phase A Switch 1 Paper feed motor phase A Signal ground Paper feed motor phase B Signal ground Paper feed motor phase B Switch 2...

  • Page 107: Eeprom Address Map

    LX-300+/1170 Revision C 7.2 EEPROM Address Map Table 7-13. EEPROM Address Map (continued) QPIT Factory Address Explanation Setting Settings Settings This section provides the EEPROM address map. Area1 NOTE: The data of two or more byte are assigned as lower byte to lower address 0: PC437 21: Code MJK and higher byte to higher address.
  • Page 108 LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting Settings Settings Settings Settings 26H,27 3AH, Reserved 0000H 0000H Reserved 0000H 0000H 1 to 22x432 by 0.0588mm (1/432 0: Draft inch) 28H,29...
  • Page 109 LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting Settings Settings Settings Settings Software 3 to 30 (by 0.1 sec.), 00H: 3 sec. b0: Software Tear-off wait time (same as default) (3 sec.)
  • Page 110 LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting Settings Settings Settings Settings Reserved 0: Table2 IBM character table 1: Table1 Refer to Appendix E. I/F timing *ACK timing data data 0: Table2...

  • Page 111: Component Layout

    LX-300+/1170 Revision C 7.3 Component Layout C294 MAIN BOARD Component layouts for each electric circuit board are shown as follows. %QORQPGPV 5KFG %QORQPGPV 5KFG %QORQPGPV 5KFG %QORQPGPV 5KFG 5QNFGTGF 5KFG 5QNFGTGF 5KFG 5QNFGTGF 5KFG 5QNFGTGF 5KFG Figure 7-2. C294 MAIN Board Component Layout Appendix Component Layout...
  • Page 112 LX-300+/1170 Revision C C294 MAIN-B BOARD 5QNFGTGF 5KFG 5QNFGTGF 5KFG 5QNFGTGF 5KFG 5QNFGTGF 5KFG %QORQPGPV 5KFG %QORQPGPV 5KFG %QORQPGPV 5KFG %QORQPGPV 5KFG Figure 7-3. Component Layout-C294 MAIN-B Board Appendix Component Layout...
  • Page 113 LX-300+/1170 Revision C C294PSB BOARD C294PSE BOARD Figure 7-4. Component Layout-C294PSB Figure 7-5. Component Layout-C294PSE Appendix Component Layout...
  • Page 114 LX-300+/1170 Revision C C294PNL BOARD Figure 7-6. Component Layout-C294PNL Appendix Component Layout...

  • Page 115: Exploded Diagrams

    LX-300+/1170 Revision C 7.4 Exploded Diagrams LX-300+ Exploded Diagrams LX-300+ No.01 Rev.01 10202 Figure 7-7. LX-300+ Exploded Diagram 1 Appendix Exploded Diagrams...
  • Page 116 LX-300+/1170 Revision C LX-300+ No.02 Rev.01 10202 Figure 7-8. LX-300+ Exploded Diagram 2 Appendix Exploded Diagrams...
  • Page 117 LX-300+/1170 Revision C LX-1170 Exploded Diagrams LX-1170 No.01 Rev.01 10309 Figure 7-9. LX-1170 Exploded Diagram 1 Appendix Exploded Diagrams...
  • Page 118 LX-300+/1170 Revision C 509 119 568 564 LX-1170 No.02 Rev.01 10309 Figure 7-10. LX-1170 Exploded Diagram 2 Appendix Exploded Diagrams...

  • Page 119: Parts List

    LX-300+/1170 Revision C 7.5 Parts List Table 7-14. LX-300+ Parts List Number Parts Name The following table shows parts name of this product. Refer to the exploded diagrams for C.B.S. SCREW parts’ number. “C.B.B-TITE(P(13)),3X14,F/ZN” Parts List for LX-300+ C.B.(O) SCREW 4X8 F/ZG Table 7-14.
  • Page 120 LX-300+/1170 Revision C Table 7-14. LX-300+ Parts List Table 7-14. LX-300+ Parts List Number Parts Name Number Parts Name “GROUNDING WIRE,PLATEN” TIMING BELT “PULLEY ASSY.,DRIVEN” “BUSHING,PARALLEL,ADJUST” “HARNESS,HP” “CABLE,HEAD” C.P.B SCREW “HARNESS,PG” PAPER GUIDE “PAPER GUIDE,LOWER” “DETECTOR,PE,REAR” “SPURGEAR,17” “HARNESS,PE,REAR” PAPERSUPPORT “DETECTOR,PE,BOTTOM” “FRAME,TR,RIGHT”...
  • Page 121 LX-300+/1170 Revision C Table 7-14. LX-300+ Parts List Parts list for LX-1170 Number Parts Name Table 7-15. LX-1170 Parts List PAPER EJECT ASSY. Number Parts Name “COMBINATION GEAR,17.5,27” "HOUSING ASSY.,LOWER" “GROUNDING PLATE,CS” "HOUSING,UPPER" “GROUNDING WIRE,LEFT” "SHIELD PLATE,LOWER" “GROUNDING WIRE,RIGHT” "COVER ASSY.,PRINTER" “GROUNDING PLATE,PF”...
  • Page 122 LX-300+/1170 Revision C Table 7-15. LX-1170 Parts List Table 7-15. LX-1170 Parts List Number Parts Name Number Parts Name "BOARD ASSY.,PANEL" "ROLLER,PAPER EJECT" "SHEET,PANEL" PAPER GUIDE "BOARD ASSY.,POWER SUPPLY" "DETECTOR,PE,REAR" HARNESS "HARNESS,PE,REAR" "POWER CABLE,BS31303SA-SR-10A" "DETECTOR,PE,BOTTOM" HARNESS "HARNESS,PE,BOTTOM" "PRINTER MECHANISM(ASP),M-3N60-100" "HOLDER,ROLLER,PF" "FRAME ASSY.,LEFT"...
  • Page 123 LX-300+/1170 Revision C Table 7-15. LX-1170 Parts List Table 7-15. LX-1170 Parts List Number Parts Name Number Parts Name "PAPER GUIDE,LOWER" "LEVER,RELEASE" "PAPER GUIDE,UPPER" "SHEET,CABLE,CR" "BASE,PAPER EJECT" "SPURGEAR,17" "COVER,PAPER EJECT" RETAINING RING "LAEF SPRING,PAPER EJECT" "PRINT HEAD,D3910-1" "DUMPER,FRAME,BASE" PAPERSUPPORT "FRAME,TR,RIGHT" "FRAME,TR,LEFT"...

  • Page 124: Electric Circuit Schematics

    LX-300+/1170 Revision C 7.6 Electric Circuit Schematics C294MAIN Board C294MAIN-B Board C294PSB Board C294PSE Board C294PNL Appendix Electric Circuit Schematics...

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