Service manual

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EPSONLX-300+/1170

9-pin Serial Impact Dot Matrix Printer

SEDM997003

SERVICE MANUAL

LX-300+

LX-1170

Summary of content (129 pages)

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SERVICE MANUAL 9-pin Serial Impact Dot Matrix Printer LX-300+ EPSON LX-300+/1170 LX-1170 ® SEDM997003
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Notice o 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. 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.
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PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings. WARNING Signals a precaution which, if ignored, could result in damage to equipment.
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About This Manual This manual describes basic functions, theory of electrical and mechanical operations, 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. CHAPTER 1. PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product. CHAPTER 2.
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Revision Status Revision Issued Date A May 11, 2000 First Release April 5, 2001 Revision: • Page -70 • Page -107 • Page -111 • Page -124 April 19, 2001 Revision: • Page -117 “LX-1170 Exploded Diagrams” added. • Page -121 “Parts list for LX-1170” added. B C Description “Warning and caution messages” added. “EEPROM Address Map” added. “Component Layout” added. “C294MAIN-B Board” added.
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CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.1 FEATURES ......................................................................................................... 9 1.2 SPECIFICATIONS .......................................................................................... 1.2.1 Printing Specification ................................................................................ 1.2.2 Paper Feeding ............................................................................................ 1.2.
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2.3.2 C294PSB / C294PSE Board ...................................................................... 58 2.3.2.1 Electric Circuit .................................................................................. 58 4.2.7.10 PF Motor Assembly Removal ......................................................... 86 4.2.7.11 Paper Feed Mechanism Disassembly .............................................. 87 4.2.7.12 Paper Guide Removal ......................................................................
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CHAPTER 1 PRODUCT DESCRIPTION
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LX-300+/1170 Revision C 1.1 FEATURES EPSON LX-300+/1170 is a 9 pin serial impact dot matrix printer. The main difference between LX-300+ and LX-1170 is the wedth : 80 colums for LX-300+ and 136 colums for LX-1170.
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LX-300+/1170 Revision C 1.2 SPECIFICATIONS Table 1-1. Print Speed and Printable Columns Printing mode 1.2.1 Printing Specification Draft condensed o Print method: Impact dot matrix o Number of pins: 9 pins o Print pin arrangement: 9x1 o Print pin diameter: 0.29 mm (0.
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LX-300+/1170 Revision C Table 1-2. Resolution Printing mode NLQ Bit image o Control code: Horizontal density (dpi) Vertical density (dpi) Adjacent dot print 240 144 No 60, 72, 80, 90 or 120 72 Yes 120 or 240 72 No ESC/P and IBM 2380 Plus emulation (Refer to 1.
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LX-300+/1170 Revision C o Character tables: o International character sets: 13 countries U.S.A U.K.
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LX-300+/1170 Revision C o Character tables and typefaces: Table 1-3. Character Tables and Typefaces Character table Table 1-3.
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LX-300+/1170 Revision C 1.2.2 Paper Feeding o Feeding method: Table 1-4.
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LX-300+/1170 Revision C Table 1-5. Paper Thickness Lever LX-300+ Lever position LX-1170 Paper thickness (inch) Min. Max. 4 (0.0154) (0.0205) 5 - 6 - Paper thickness (mm) Paper thickness (inch) Paper thickness (mm) Min. Max. over 0.39 up to 0.52 (0.0102) (0.0130) over 0.26 up to 0.33 - - (0.0130) (0.0154) over 0.33 up to 0.39 - - (0.0154) (0.0205) over 0.39 up to 0.
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LX-300+/1170 Revision C 1.2.3 Electrical Specification 1.2.4 Environmental Condition o 120 V version o Temperature: 5 to 35 °C (operating*1) 15 to 25 °C (operating*1,*2) -30 to 60 °C (non-operating) o Humidity: 10 to 80% RH (operating*1) 30 to 60% RH (operating*1,*2) 0 to 85% RH (non-operating*1) o Resistance to shock: 1 G, within 1ms (operating) 2 G, within 2ms (non-operating*3) o Resistance to vibration: 0.25 G, 10 to 55 Hz (operating) 0.
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LX-300+/1170 Revision C n Cyan 0.7 million characters (Draft 10 cpi, 14 dots/character) n Yellow 0.5 million characters (Draft 10 cpi, 14 dots/character) 1.2.7 Safety Approvals o 120 V version n Safety standards: UL1950 CSA C22.2 No. 950 n EMI: FCC part15 subpart B class B CSA C108.8 class B o 230 V version n Safety standards: EN60950 n EMI: EN55022 (CISPR pub.22) class B AS/NZS 3548 class B 1.2.
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LX-300+/1170 Revision C 1.2.9 Printable Area Table 1-6. Printable Area for Cut Sheet o Cut sheets Single Sheet Multi Part PW (Width) Refer to 1.7 "Paper Specifications" Refer to 1.7 "Paper Specifications" PL (Length) Refer to 1.7 "Paper Specifications" Refer to 1.
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LX-300+/1170 Revision C o Envelop o Continuous paper R M L M T M P e r fo r a tio n P r in ta b le A r e a P r in ta b le A r e a B M P e r fo r a tio n Figure 1-3. Printable Area for Envelop Figure 1-4. Printable Area for Continuous Paper Table 1-7. Printable Area for Envelop Table 1-8. Printable Area for Continuous Paper Envelope Printable Area Continuous Paper PW (Width) Refer to 1.7 "Paper Specifications" PL (Length) Refer to 1.7 "Paper Specifications" PW (Width) Refer to 1.
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LX-300+/1170 Revision C Table 1-8. Printable Area for Continuous Paper o Roll paper Continuous Paper RM (Right Margin) P W 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 L M B M T M NOTE: The maximum horizontal printable area is 203.2mm for LX-300+/ 345.44 for LX-1170. P r in ta b le A r e a B M Figure 1-5. Printable Area for Roll Paper Table 1-9.
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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.
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LX-300+/1170 Revision C o BUSY signal is active (HIGH level) under the conditions below: Table 1-12. Connector Pin Assignment and Signals (Forward Channel) n In the process of receiving data Pin No.
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LX-300+/1170 Revision C 1.3.2 Parallel Interface (Reverse Channel) o Transmission mode: Table 1-13. Connector Pin Assignment and Signals (Reverse Channel) IEEE-1284 nibble mode o Adaptable connector: See 1.3.1 "Parallel Interface (Forward Channel)" o Synchronization: Refer to the IEEE-1284 specification o Handshaking: Refer to the IEEE-1284 specification o Signal level: IEEE-1284 level 1 device See 1.3.
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LX-300+/1170 Revision C Table 1-13. Connector Pin Assignment and Signals (Reverse Channel) Pin No. Signal Name Return GND Pin In/Out 17 Chassis -- -- 16, 33, 19-30 GND -- -- 15, 34 NC -- -- Pin No. Functional Description Chassis GND. Signal GND. Not connected. 1.3.3 Serial Interface o Synchronization: Asynchronous o Signal level: EIA-232D MARK (logical 1): SPACE (logical 0): o Word length: Start bit: Data bit: Data bit: Parity bit: Stop bit: Table 1-14.
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LX-300+/1170 Revision C o Auto: 1.3.4 Interface Selection The printer has 2 interfaces; the parallel interface and serial interface. These interfaces are selected manually by Default Setting or selected automatically. o Manual Selection Communication is carried out in the conventional mode until a magic string (1284.4 synchronous commands) is received. By receiving a magic string, communication in IEEE1284.4 packet mode is started. o Off: One of 2 interfaces can be selected by Default setting.
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LX-300+/1170 Revision C 1.4.1.1 Switches 1.4 Operation o 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. Tear Off Tear Off LF/FF Load/Eject Paper Out Switch Function Pause -Alternates printing and non-printing status. -Enables Micro Adjustment function and Font selection, holding it down for 3 seconds.
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LX-300+/1170 Revision C o Operation in default setting mode *3 Font (Green) -The status of Font selection is displayed by 2 Font LEDs when continuous paper is out of the Tear-off position. -Both LEDs blink when continuous paper is in the Tear-off position. n¨: Draft n«: Draft Condensed ¨n: Roman ¨¨: Roman Condensed ¨«: Sans serif «n: Sans serif Condensed ««: Tear Off (¨: LED On, n: LED Off, «: LED Blinks) The following switches are used in default setting mode; Table 1-17.
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LX-300+/1170 Revision C o Data Dump 1.4.2 Functions 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 o Clear EEPROM o Pause Resets the printer to the factory default setting, which is not always proper setting for each market demand. (i.e. This function is for emergency.) Clear Areal EEPROM data except 00H to 1FH. -This switch alternates printer activity between printing and non-printing.
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LX-300+/1170 5. Revision C Select setting value by LF/FF button. Tear Off/ Bin LEDs and Paper Out LED show that menu’s value by status of On/Off/ 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. 6. When LF/FF button is pressed, the printer memorize the last setting value. 7. Repeat (4) to (6). The other items can be changed in the same manner.
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LX-300+/1170 3. Fix the selected number by pressing Tear Off switch. Selected number is fixed and the next alignment pattern is printed. 4. 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. adjustment for draft mode - Bi-d. adjustment for NLQ mode 5. Turn the printer off. The setting is stored into non-volatile memory. Revision C 1.4.
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LX-300+/1170 Revision C 1.5 Control codes Table 1-20. ESC/P2 1.5.1 ESC/P2 Classification Operation Command Font enhancement Double-Width ESC W, DC4, SO Condensed DC2, SI Double-height ESC w Double-Strike ESC G, ESC H Super-/ Subscript ESC T, ESC S Underline ESC- Spacing Intercharacter Space ESC Space Character handling Character Table ESC t, ESC (t International Character ESC R User-Defined Characters ESC%, ESC &, ESC: Table 1-20.
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LX-300+/1170 Revision C 1.5.2 IBM 2390 Plus Emulation Table 1-21. IBM 2390 Plus emulation Table 1-21.
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LX-300+/1170 Revision C 1.5.3 Bi-Directional Commands -[Save] column shows that SV commands is effective to each feature or not. -¡: All parameters are saved., ∆: Some limited parameters are saved.,-: No parameter is saved. o Reply printer ID Reply printer ID: [ESC][SOH]@EJL[SP]ID[CR][LF] The printer sends the following ID string in reply to this command. @EJL[SP]ID[CR][LF] MFG: EPSON; CMD: ESCPL2,PRPXL24,BDC; MDL: LX-300+; CLS: PRINTER; DES: EPSON[SP]LX-300+; [FF] Table 1-22.
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LX-300+/1170 Revision C Table 1-25. NLSP ver. only Table 1-23. Note for Table 1-22 m1 set by AT/CT m2 set by AT m3 set by AT 0 0 0 1 All parameters that can be set *4 m2 and m3 apply to the following ID number. (See Table 1-24 & Table 1-25.) m2 m3 Character table m2 m3 Character table 0EH 30H PC866 UKR 29H 00H PC 708 0FH 00H PC869 2AH 00H PC720 0DH 20H PCAR_864 7FH 02H ISO 8859-2 1BH 00H MAZOWIA 2DH 00H PC771 Table 1-24. Std and NLSP ver.
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LX-300+/1170 Revision C 1.5.3.1 Reply Printer Status Table 1-26.
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LX-300+/1170 Revision C o Paper_path 1.5.3.2 Packet commands Table 1-29. Paper_Path Table 1-31.
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LX-300+/1170 Revision C 1.6 Initialization o Power-on initialization The initialization of this level is activated by power-on or cold-reset command (remote RS command). This initialization is; n to initialize the printer mechanism. n to execute Operator initialization. o Operator initialization The initialization of this level is activated by -INT signal (negative pulse). This initialization is; n to clear the all buffers of data. n to cancel the download character definition.
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LX-300+/1170 Revision C o Cut sheet (multi part) 1.7 Paper Specifications Table 1-33. Cut Sheet (Multi part) o Cut sheet (single sheet, not multi part) Table 1-32. Cut Sheet (single sheet, not multi part) Manual insertion Minimum Maximum CSF single-bin Minimum (inch) (mm) (3.9) 100 (10.1) (257) Length (inch) (mm) (3.9) 100 (14.3) (364) Maximum (3.9) 100 (10.1) 257 (7.2) 182 (8.5) 216 Copies Length (inch) (mm) (3.9) 100 (14.3) 364 (10.1) 257 (14.
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LX-300+/1170 Revision C o Envelope o Continuous paper (Single sheet and Multipart) Table 1-34. Envelope Minimum (inch) (mm) (6.5) 165 Length (inch) (mm) (3.6) 92 Width (inch) (mm) (9.5) 241 Length (inch) (mm) (4.1) 105 Envelop (No. 10) Quality (inch) (mm) (0.0063) 0.16 (0.0205) 0.52 The difference of thickness at the printable area is within 0.25mm (0.0098 inch). (g/m2) (lb.
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LX-300+/1170 Revision C o Labels 63.5 mm (2.5 inch) min. Table 1-36. Continuous Paper with Labels Rear Entry Min. Label size Max. --- Min. Max. See the figure below. --- (4) 101.6 (10) 254 --- --- (4) 101.6 (22) 558.8 (inch) (mm) --- --- (0.0028) 0.07 (0.0035) 0.09 (inch) (mm) --- --- (0.0063) 0.16 (0.0075) 0.19 Base sheet width (inch) (mm) Base sheet length (one page) (inch) (mm) Base sheet thickness Total thickness Label weight Bottom Entry (g/m 2) (lb.
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LX-300+/1170 Revision C o Physical Specifications (CSF) 1.8 Physical Specifications n Dimensions: 366 x 441 x 370 mm (WxDxH) 1.8.1 Physical Specifications for LX-300+ n Mass: Approx. 4.6 kg o Physical Specifications (Without pull tractor) n Appearance: See the figure below. n Dimensions: 366 x 275 x 159 mm (WxDxH) n Mass: Approx. 4.4 kg n Appearance: See the figure below. Figure 1-10. Appearance With CSF (LX-300+) Figure 1-9.
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LX-300+/1170 Revision C o Physical Specifications (CSF) 1.8.2 Physical Specifications for LX-1170 o Physical Specifications for World Wide (Without pull tractor) n Dimensions: 366 x 441 x 370 mm (WxDxH) n Dimensions: 366 x 275 x 159 mm (WxDxH) n Mass: Approx. 4.6 kg n Mass: Approx. 4.4 kg n Appearance: See the figure below. n Appearance: See the figure below. n Figure 1-11.
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LX-300+/1170 Revision C 1.9 Accessories Table 1-38. Enclosed Parts Enclosed Items Quantity User's manual 1 Driver disk 1 Ribbon cartridge (Black) 1 Power supply cable (230 V Version) 1 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 Ribbon cartridge (Color: Only available for LX-300+) S015073 Table 1-40.
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CHAPTER 2 OPERATING PRINCIPLES
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LX-300+/1170 Revision C 2.1 Overview LX-300+/1170 consists of the printer mechanism and electric circuit boards. Power Supply Board Main Board C294MAIN/ C294MAIN-B C294PSB/PSE Printer Mechanism Panel Board C294PNL Figure 2-1. Component Unit o Circuit board n Main (control circuit): C294MAIN(LX-300+) C294MAIN-B Board(LX-300+/LX-1170) n Power: C294PSB / C294PSE Board n Panel: C294PNL Board The following sections describe the operating principles of each unit.
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LX-300+/1170 Revision C 2.2 Printer Mechanism o Ribbon mechanism The following is main components of the LX-300+/1170 printer mechanism.
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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 9 Diameter of wire φ0.29 mm Wire configuration See Figure 2-3 "Wire Configuration". Note: The figure is seen from the back of the head facing printing side. Direct current coil resistance 33.3 ±3.3 Ω (25°C) Head drive method Rated voltage drive Head drive voltage 35+2.1/-3.5 V • Normal: 0.75 A (Standard) • Copy: 0.
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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.) o Carriage: Mounts the printhead. o CR motor: Drives carriage to the printing column direction. o Timing belt: Transfers the drive from the CR motor to the carriage. o Carriage guide shaft: o HP detector: Shifts the carriage parallel to the platen. Detects carriage home position. CR MOTOR This printer uses stepping motor for CR motor.
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LX-300+/1170 Revision C Speed Mode Carriage Carriag e speed mode CR drive frequency [Hz] A 3600 B 3375 C D 2700 2250 Printing mode Phase drive [pps] Current limit (A/phase) Front rush High speed Normal speed Low speed Rear rush Color 2-2 0.79 0.79 0.70 0.70 0.70 BW 2-2 0.70 0.59 0.59 0.59 0.59 Color 2-2 0.79 0.79 0.70 0.70 0.70 BW 2-2 0.70 0.59 0.59 0.59 0.59 Color 2-2 0.79 0.79 0.70 0.70 0.70 BW 2-2 0.70 0.59 0.59 0.59 0.
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LX-300+/1170 Revision C CARRIAGE HOME POSITION (HP) DETECTOR 2.2.3 Ribbon Mechanism The table below is the HP detector specifications. 2.2.3.1 Ink Ribbon Shifting Mechanism Ink ribbon shifting mechanism: CR motor drives timing belt and the timing belt driven pulley drives the ribbon shifting gears. Table 2-5. HP detector Specifications Item Specification Method Mechanical contact method Switching rate 0.6 to 1.0 mA, 5 VD±5% • out of HP: close • within HP: open Switching mode 2.2.3.
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LX-300+/1170 Revision C Color ribbon drive circuit RIBBON CARTRIDGE DETECTOR Ribbon detector detects if the color ribbon is installed or not. o Detect Timing n When the power is applied. Ribbon detector n When recovering from the economy mode. n When the printing is started. Table 2-7. Ribbon Detector Specifications Item CS motor CS cam CS lever assembly Method Mechanical contact method Switching rate 0.6 to 1.
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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 energy saving mode. The following is PG_SW specification. Table 2-9. PG_SW Detector Specifications o Color mechanism initialization Item Color mechanism initialization shifts color mechanism for the black ink area to be at the home position.
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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 paper end detector, bottom paper end detector and push tractor unit. (Refer to Refer to Figure 2-2.) o Paper Feed Method LX-300+/1170 uses a stepping motor for PF motor. Open loop control switches the phases according to the setting period and this mechanism loads and carries paper to the appointed position and eject paper.
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LX-300+/1170 Revision C 2.2.5.1 Page Length Measurement RPE DETECTOR RPE detector is installed on the paper path at the back of the printer. The table below shows the RPE detector specifications. Value = [The number of paper feed pulse from the paper top (top margin: 4.2mm) until RPE detector detects paper end] + [forms over-ride specified paper feed pulse] - [adjustment value] Table 2-11. RPE Detector Specifications Item Specification Method Mechanical contact method Switching rate 0.6 to 1.
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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. Compression spring Plain washer Item Tractor gear Paper advance reduction gear Mechanical contact method Switching rate 0.6 to 1.
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LX-300+/1170 Revision C 2.3 Electrical Circuit Operating Principles o 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). As for LX-1170, C294 MAIN-B is installed from initial production. Control Panel HP sensor RPE Sensor Release Sensor BPE Sensor PG Sensor Figure 2-7.
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LX-300+/1170 Revision C o C294 MAIN-B Block Diagram Figure 2-8.
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LX-300+/1170 Revision C Table 2-14. Main Elements Table 2-14. Main Elements Elements Location CPU (C294 MAIN) G/A * (C294 MAIN) CPU/GateArray (C294 MAIN-B) IC3 IC6 IC3 Elements Function RISC C33208 CPU, QFP 128 pin • Outside clock 19.66 MHz/ Inside clock 39.
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LX-300+/1170 Revision C Table 2-16. Output Voltage and its Use Output voltage Use 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.
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CHAPTER 3 TROUBLESHOOTING
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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. W A R N IN G n Never touch printhead and any motors right after printing since n they are highly heated. When disassembling the printer, be sure to disconnect the power cable and remove the interface cable.
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LX-300+/1170 Revision C 3.2 Troubleshooting 3.2.2 Check Performance By Self-Check Function 3.2.1 Initialization Check LX-300+/1170 has self-check function and it supervises the printer condition constantly. If any problem occurs, it indicates error by indicator LED and in some cases it notifies error to the operator by beeping the buzzer. Identify error cause, referring to the indication first. If error is not solved, perform unit repair. Before troubleshooting, check the following basic items. 1.
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LX-300+/1170 Revision C o Release Lever Error This error will be indicated when wrong release lever operation is performed. For example, if you change the release lever setting when the printer already starts feeding paper, this error will be generated. n Solution Reset the release lever. 3.2.3 Identify Problems From Symptoms This section procedure to identify the problems from the abnormal symptoms.
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LX-300+/1170 Revision C Table 3-5. When Power is Applied, the Printer Becomes Fatal Error. Table 3-3. Control Panel LED Does Not Light On. Cause Check Point Y/N Blowout of a fuse on the power board. Is a fuse on the power board blew out? YES Connector is not connected to the power board. Are connectors connected to the power board properly? NO Power switch is defective. Is conductivity of the switch is OK? YES Replace the power board. HP detector is defective. Power board is defective.
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LX-300+/1170 Revision C Table 3-6. Self Test Print is Abnormal. Cause Ribbon mechanism is defective. Printer mechanism is defective. Check Point Is ribbon advanced properly? - Table 3-9. Printing Operation is Abnormal When it is On-Line. (Self-Test is Normal.) Y/N Solution NO Replace the ribbon mechanism parts. - Replace the printer mechanism. Table 3-7. Paper Feed is Abnormal. Cause RPE detector or BPE detector is defective or not connected properly. Check Point Check the sensors.
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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 IN 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. 3.2.4.1 Printhead Check By measuring the direct current resistance of the printhead coil, you can check if it is all right. Table 3-10.
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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 all right. When the sensor is connected mechanically, you can check the sensor by its conductivity. Table 3-12. Sensor Check Table 3-11. Motor Check Item CR motor PF motor CS motor (option, LX-300+ only) 1. 2. 3. 1. 2. 3. 1. 2. 3. 4. Operation Set the multimeter to the resistance measuring range.
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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 Printer driver Troubleshooting Operation 1. Set the multimeter to the resistance measuring range. 2. Connect the one side of the probe to the base of the transistor. 3. Connect the one side of the probe to emitter of the transistor. Specification The resistance should NOT be “0” or infinity.
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CHAPTER 4 DISASSEMBLY AND ASSEMBLY
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LX-300+/1170 Revision C 4.1 Overview 4.1.2 Tools This chapter explains the disassembly and assembly of LX-300+/1170.Read the precautions below before disassembling and assembling the printer. The table below lists the tools recommended to use for disassembly and assembly and adjustment. Use only tools specified here. Table 4-1. Recommended Tools-1 4.1.
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LX-300+/1170 Revision C Table 4-3. List of Screws Screw Name C.B.P., Tite, 3x10 F/ZN C.P.B., Screw, 3x14 F/ZN C.B.S., Screw, 3x4 F/Zn Screw Name C.P., Screw, 3x4 F/ZN C.B(O), Screw, 4x8 F/ZN Jack Socket C.B.B.
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LX-300+/1170 Revision C 4.1.3 Service Checks After Repair Table 4-4. Check List for Repaired Printer Before returning the printer back to the user, use the check list below to confirm the quality of the repaired printer. Category Component Version Up ROM version Latest ROM version ________ ¨OK ¨NG Ink ribbon Is ribbon removed? Table 4-4.
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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 specified, assembly can be done in the reverse order of the disassembly procedure. START Anything that service person should pay attention to is described under “Check Point”. Any adjustment required after assembly is described under “Adjustment”. 4.2.2 "Upper Housing Removal" 4.2.
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LX-300+/1170 Revision C 4.2.1 Printhead Removal Printhead 1. Remove the cover of the printer. 2. Remove 1 screw (C.P.B., Screw, 3x14 F/ZN; Torque 0.59-0.78N.m) securing the printhead to the carriage assembly. 3. Lift the printhead a little bit. Unlatch 2 hooks securing the printhead FFC to carriage unit. 4. Remove FFC from the printhead. C A U T IO N A D J U S T M E N T R E Q U IR E D C.P.B.
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LX-300+/1170 Revision C 4.2.2 Upper Housing Removal 1. Remove platen knob, cover assembly, printer, tractor unit and paper eject unit. Remove the color upgrade kit if it is installed (LX-300+ only). 2. Set the release lever to the tractor feed. 3. Remove 4 screws for LX-300+ and 6 screws for LX-1170 (CBP, Tite, 3x10 F/Zn, Torque 0.78-0.98) securing the upper housing to the lower housing. 4. .Remove the upper housing.
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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. See Figure 4-4 below. 1. Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) 2. 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. LX-1170: Remove 4 screws (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.) and 2 screws (C.B.S.
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LX-300+/1170 5. 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 6. Remove the printer mechanism. A D J U S T M E N T R E Q U IR E D Perform Bi-D adjustment after removing the printer mechanism.
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LX-300+/1170 Revision C 4.2.4 Board Assembly and Panel Removal 4.2.5 C294MAIN/MAIN-B Board Assembly Removal 1. Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) 1. Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) 2. Remove the panel FFC from the connector of panel board assembly. 2. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 3. Remove 3 screws (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.
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LX-300+/1170 Revision C 4.2.6 C294 Power Supply Board Assembly Removal A D J U S T M E N T R E Q U IR E D When the main board assembly is replaced, perform destination setting and Bi-D adjustment. Lower Shield Plate C.P., Screw, 3x4 F/ZN 1. Remove the upper housing. (See 4.2.2 "Upper Housing Removal".) 2. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 3. LX-1170: Remove 1 screw(C.B.P., Tite, 3x10 F/ZN;Torque 0.78-0.98 N.M.) and the left grounding plate. 4.
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LX-300+/1170 Power Switch Revision C C.B.P., Tite, 3x10 F/ZN CN1 C.B.P., Tite, 3x10 F/ZN 4.2.7 Printer Mechanism Disassembly 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" CBP (3x10) P/S Board Assembly C.B.P., Tite, 3x10 F/ZN 4.2.7.3 "Carriage Unit Removal" 4.2.7.4 "Ribbon Feed Mechanism Removal" 4.2.7.5 "RPE Sensor Removal" 4.2.7.7 "HP Sensor Removal" 4.2.7.
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LX-300+/1170 Revision C 4.2.7.1 CR Motor Assembly Removal 4.2.7.2 Platen Removal 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the tension spring, 8.10 and motor bracket and release the tension of the timing belt. 2. Remove the platen grounding wire from the platen. 3. 3. Remove the timing belt from the pulley of the CR motor assembly.
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LX-300+/1170 Revision C 4.2.7.3 Carriage Unit Removal Bushing, 11 Platen Gear, 34 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the printhead. (See 4.2.1 "Printhead Removal".) 3. Remove the timing belt from the carriage installation point. Carriage Unit Left frame Timing Belt Bushing, 11 Platen grounding wire Combination gear, 17.5, 27 Right frame Figure4-13. Platen Removal Installation Point Figure4-14. Timing Belt Removal 4.
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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 7. Left frame Remove the carriage unit along with the CR guide shaft and PG adjust lever from the printer mechanism. A D J U S T M E N T R E Q U IR E D When the carriage unit is replaced, perform Bi-D adjustment. Base frame Right frame Figure4-15. Carriage Unit Removal 5.
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LX-300+/1170 Revision C 4.2.7.4 Ribbon Feed Mechanism Removal 4.2.7.5 RPE Sensor Removal 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the tension spring, 8.10 from the motor bracket and release the tension of the timing belt. (See 4.2.7.1 "CR Motor Assembly Removal".) 2. Remove the hook of the RPE sensor installed at the paper guide. 3. Remove RPE sensor. 3.
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LX-300+/1170 Revision C 4.2.7.7 HP Sensor Removal 4.2.7.8 PG Sensor Removal 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Release 2 hooks of the HP sensor securing it to the base frame with tweezers and remove the sensor. 2. Release 2 hooks of the PG sensor securing it to the left frame with tweezers and remove the sensor. 3. Remove the harness from the sensor (black). 3.
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LX-300+/1170 3. Revision C 4.2.7.10 PF Motor Assembly Removal Remove the harness from the sensor (blue). Release lever position sensor (blue) 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the platen grounding wire from the platen. 3. 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. 4.
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LX-300+/1170 Revision C 4.2.7.11 Paper Feed Mechanism Disassembly 5. 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the PF motor assembly. (See 4.2.7.10 "PF Motor Assembly Removal".) Remove the combination gear, 8.5, 25.2 from the right frame. Hook at the right frame Combination spring, 1.18 Plain washer, 5.2 x 0.3 x 10 Combination gear, 8.5, 25.2 3. Remove the release lever. Release shaft Release lever Figure4-23. Release Lever Removal Gear, 27.
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LX-300+/1170 Revision C 4.2.7.12 Paper Guide Removal 8. 1. Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".) 2. Remove the platen. (See 4.2.7.2 "Platen Removal".) 3. Remove the carriage unit. (See 4.2.7.3 "Carriage Unit Removal".) 4. Remove the HP sensor. (See 4.2.7.7 "HP Sensor Removal".) 5. Remove the PG sensor. (See 4.2.7.8 "PG Sensor Removal".) 6. Remove the PF motor assembly and release lever. (See 4.2.7.10 "PF Motor Assembly Removal".) 7.
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LX-300+/1170 Disassembly and Assembly Revision C Disassembly and Assembly 89
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CHAPTER 5 ADJUSTMENT
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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. o Printhead is replaced. Is the platen gap within the range of the setting? o Carriage is replaced. o CR guide shaft is removed. Adjust the platen gap at the left end. o Parallelism adjust bushing is removed. Move the carriage unit to the right end.
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LX-300+/1170 5.1.2 Bi-D Adjustment Revision C 5. LX-300+: Load and run the adjustment program “Q80A12V.bas”. Input “Q80A12V” and press ENTER. Then input “run”. LX-1170f: Load and run the adjustment program “U10A00V.bas”. Input “U10A00V” and press ENTER. Then input “run” and press ENTER. Go to step 7. 6. LX-300+: The application select screen appears. Input “G” to select “GWBASIC”. LX-1170: Not applicable. Adjustment programs here for LX-300+ and LX-1170 are originally used for production line.
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LX-300+/1170 7. The program will ask you the production line No. Ignore it and press ENTER. LX-300+: After pressing ENTER, input “1”(model number) to select LX-300+. LX-1170: After pressing ENTER, go to step 8. Revision C 8. LX-300+: Printer 9/24 pin select screen appears. Use ↑ and ↓ key to shift “>” mark to the left of “(1) 9 pin” and press ENTER to select 9 pin printer. LX-1170: Select “LX-1170” and press ENTER.
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LX-300+/1170 9. Revision C The destination setting menu appears. Perform settings referring to Table 5-3, “Destination Setting List,” on page 92. Table 5-3. Destination Setting List EUL (MIDDLE EAST) EAL DEFSTD ESP EHK LX-1170 EUR NLSP Conti NLSP EUL NLSP (240V) EUL NLSP (220V) The destination settings are as follows.Use ↑ and ↓ key or ← and → key to shift “>” mark to the left of the appropriate destination and press ENTER to select destination. Table 5-3.
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LX-300+/1170 Revision C 10. When you select the destination, the select menu below appears. Use ↑ and ↓ key to shift “>” mark to the left of “Out Going” and press ENTER. 12. “Main MENU” appears. Use ↑ and ↓ key or ← and → key to shift “>” mark to the left of “(1) Bi-D Adjust” and press ENTER. 11. LX-300+: On the next screen, you can input the number of printing columns per one movement of the carriage.
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LX-300+/1170 Revision C 14. The following printing pattern which shows each mode number and current Bi-D values will be printed. 17. By changing the VRO value, adjust the Bi -D. Repeat step 14 to 17 until the value “A” becomes within the range below. Refer to Table 5-4, “Bi-D Adjustment Setting Value,” on page 95 for appropriate Bi-D value. Figure 5-2. Set Bi-D Values 15. At step14, if you press the SPACE bar, the Bi-D pattern for the selected mode will be printed.
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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. C A U T IO N n This test program used here is originally the program for n n Adjustment production line. Operations that are not described in this manual are forbidden thereafter.
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CHAPTER 6 MAINTENANCE
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Product Name Revision C 6.1 Maintenance Table 6-2. Lubrication Points Appropriate maintenance is necessary to keep the printer in the best condition and prevent from troubles. Fig. Lubrication Points Lubrica nt Quantity 3 shafts and 2 bosses of the left frame G-26 1/2 grain of rice Shaft of RD ratchet G-26 1 grain of rice 6-1 6.1.1 Cleaning Use neutral detergent or diluted alcohol to clean the dirt on the outside. Vacuum dust or a small piece of papers inside the printer.
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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 the right frame. Lubricate G-26 on the shaft of the RD ratchet. G-26, 1 grain of rice Shafts at the right frame assembly: G-26, 1 grain of rice RD ratchet shaft Combination Gear 5.1, 16.2 Driven pulley assy. Planetary lever assy. Spur Spur Gear, Gear, 13.2 13.2 Figure 6-3.
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Product Name Revision C Drive PF roller Lubricate G-26 to the shaft of the drive PF roller and the rear driven PF roller. (4 places) Lubricate G-26 into the hole of the right TR (tractor) frame facing to the TR guide shaft and the left TR frame. PF roller assembly: G-26, 1/2 grain of rice Tractor assembly: G-26, 1/2 grain of rice Rear driven PF roller Figure 6-5. PF Roller Assembly Release shaft Paper guide assy.
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Product Name Revision C Move the carriage around the center, then lubricate G-26 on the touching parts of the 2 sides of the frame. Lubricate G-26 on the installing shaft of the Combination Gear, 17.5, 27 of the right frame. Carriage: G-26, 40mm x 2 places Combination gear 17.5, 27: G-26, 1/2 grain of rice Figure 6-9. Carriage Figure 6-11. Combination Gear 17.5, 27 Lubricate G-26 on the 2 touching position with CR motor assembly from the inside of the base frame.
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CHAPTER19 7 APPENDIX
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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 The figure below illustrates how the primary components are connected. CS motor is only available for LX-300+.
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LX-300+/1170 Revision C Table 7-8. Connector Pin Assignments - CN9 Table 7-4.
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LX-300+/1170 Revision C Table 7-12. Connector Pin Assignments - CN13 Table 7-10. Connector Pin Assignments - CN11 Pin I/O Signal Name Function 1 O PFA Paper feed motor phase A 2 O PFA Paper feed motor phase A 3 O PFB Paper feed motor phase B 4 O PFB Paper feed motor phase B Table 7-11.
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LX-300+/1170 Revision C 7.2 EEPROM Address Map Table 7-13. EEPROM Address Map (continued) Address This section provides the EEPROM address map. NOTE: The data of two or more byte are assigned as lower byte to lower address and higher byte to higher address. *1: The data are fixed by each printer hardware in the factory. The data should not be changed afterwards.
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LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Address Explanation Setting Table 7-13. EEPROM Address Map (continued) QPIT Settings Factory Settings Address 0000H 0000H 3AH, 3BH Reserved 3CH Font selection 0: Draft 1: Roman 2: Sans serif 3DH Pitch selection 0: 10 cpi 1: 12 cpi 2: 15 cpi 3EH, 3FH Reserved 40H Print direction setting 41H43H Reserved 26H,27 H Reserved 28H,29 H 1 to 22x432 by 0.0588mm (1/432 inch) Page langth for CSF 0000H: 558.
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LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Address Explanation Software 45H 0 slash Buzzer ---Auto CR ---------- 46H49H 4AH 4BH 4CH Setting b0: Software (0:ESC/P 1:IBM 2381 Plus) b1: 0 slash (0: off 1: on) b2: Buzzer (0: on 1:off) b3: Reserved b4: Auto CR(IBM) (0: off 1: on) b5: Reserved b6: Reserved b7: Reserved Reserved Panel mask pattern 1 Panel mask pattern 2 Manual feed wait time Appendix QPIT Settings 00H b0: Font function is masked.
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LX-300+/1170 Revision C Table 7-13. EEPROM Address Map (continued) Address 57H 58H Explanation Reserved *ACK timing data 59H *ACK timing data (complement of 58H) 5AH, 5BH Reserved 5CH, 5DH TOF Minimum value 5EH Copy mode Energy save mode ---- 5FH Setting Refer to Appendix E. I/F timing data -144 to -72, 0: -72 (4.2mm) When it is bigger than -72, the value is considered as -72.
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LX-300+/1170 Revision C 7.3 Component Layout C294 MAIN BOARD Component layouts for each electric circuit board are shown as follows. Figure 7-2.
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LX-300+/1170 Revision C C294 MAIN-B BOARD Figure 7-3.
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LX-300+/1170 Revision C C294PSB BOARD C294PSE BOARD Figure 7-4. Component Layout-C294PSB Appendix Figure 7-5.
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LX-300+/1170 Revision C C294PNL BOARD Figure 7-6.
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LX-300+/1170 Revision C 7.4 Exploded Diagrams o LX-300+ Exploded Diagrams 180 109 105 570 124 127 127(126/for EAI) 451 111 127 128 127 127 128 127 127 127 127 127 115 103 127 127 190 450 320 300 200 123 118 132 127 117 132 120 125 116 129 100 131 106 400 102 500 117 119 129 104 401 400 320 101 127 130 200 102 LX-300+ No.01 Rev.01 Figure 7-7.
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LX-300+/1170 Revision C 554 512 526 514 516 527 556 525 541 551 553 526 527 505 513 544 510 509 510 528 521 532 559 528 555 558 520 522 523 552 557 542 550 577 501 651 518 529 530 524 650 543 559 579 539 517 535 545 514 571 581 531 563 502 576 540 537 567 536 534 538 566 542 565 533 532 562 531 506 561 590 559 564 559 569 503 575 568 560 574 578 581 511 581 581 515 580 573 581 514 504 581 LX-300+ No.02 Rev.01 10202 Figure 7-8.
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LX-300+/1170 Revision C o LX-1170 Exploded Diagrams 105 550 107 547 180 519 550 109 550 549 550 119 300 119 119 450 103 128 119 126 111 128 119 451 119 119 200 119 119 124 119 121 128 119 122 120 118 119 123 125 530 117 129 116 320 129 117 106 530 104 129 129 401 500 100 400 400 130 LX-1170 No.01 Rev.01 10309 Figure 7-9.
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LX-300+/1170 Revision C 512 514 544 513 516 505 510 509 119 510 525 528 541 508 518 557 551 526 525 558 527 526 524 523 542 501 553 527 528 559 532 526 525 528 558 554 527 526 552 527 594 525 528 556 555 521 546 520 522 650 593 119 539 517 562 529 535 592 545 540 537 514 538 543 571 536 563 506 531 534 567 533 532 561 565 590 566 531 542 502 559 569 514 651 511 503 560 651 504 LX-1170 No.02 568 564 515 Rev.01 10309 Figure 7-10.
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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 parts’ number. 128 C.B.S. SCREW o Parts List for LX-300+ 129 “C.B.B-TITE(P(13)),3X14,F/ZN” 130 C.B.(O) SCREW 4X8 F/ZG 131 C.P.SCREW 132 C.B.S. SCREW 180 “GUIDE,STACKER” 200 “BOARD ASSY.,MAIN” 320 HARNESS 300 “BOARD ASSY.,POWER SUPPLY” 400 POWER CABLE ASSY. 450 “BOARD ASSY.
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LX-300+/1170 Revision C Table 7-14. LX-300+ Parts List Number Appendix Table 7-14. LX-300+ Parts List Parts Name Number Parts Name 515 “GROUNDING WIRE,PLATEN” 541 TIMING BELT 516 “PULLEY ASSY.,DRIVEN” 542 “BUSHING,PARALLEL,ADJUST” 517 “HARNESS,HP” 543 “CABLE,HEAD” 518 C.P.
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LX-300+/1170 Revision C Table 7-14. LX-300+ Parts List Number Appendix o Parts list for LX-1170 Table 7-15. LX-1170 Parts List Parts Name 570 PAPER EJECT ASSY. 571 “COMBINATION GEAR,17.5,27” 100 "HOUSING ASSY.,LOWER" 573 “GROUNDING PLATE,CS” 103 "HOUSING,UPPER" 574 “GROUNDING WIRE,LEFT” 104 "SHIELD PLATE,LOWER" 575 “GROUNDING WIRE,RIGHT” 105 "COVER ASSY.,PRINTER" 576 “GROUNDING PLATE,PF” 106 KNOB 577 “SHEET,PROTECT,CABLE” 107 "COVER ASSY.
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LX-300+/1170 Revision C Table 7-15. LX-1170 Parts List Number Appendix Table 7-15. LX-1170 Parts List Parts Name Number Parts Name 450 "BOARD ASSY.,PANEL" 519 "ROLLER,PAPER EJECT" 451 "SHEET,PANEL" 520 PAPER GUIDE 300 "BOARD ASSY.
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LX-300+/1170 Revision C Table 7-15. LX-1170 Parts List Number Appendix Table 7-15.
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LX-300+/1170 Revision C 7.
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