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EPSON TERMINAL PRINTER
LX-1050+
SERVICE MANUAL
EPSON
400328 3
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NOTICE Reproduction of any part of this manual in any form whatsoever without All rights reserved. SEIKO EPSON’s express written permission is forbidden. The contents of this manual are subjects to change without notice. All efforts have been made to ensure theaccuracyof the contents of this manuaI. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual o
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PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal inju~ 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. The precautionary measures itemized below should always be observed when performing repair/ maintena
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PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of LX-105O+. The instructions and procedures included herein are intended for the experience repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: CHAPTER 1. GENERAL DESCRIPTION Provides a general product overview, lists specifications, and illustrates the main components of the printer. CHAPTER 2. OPERATING P
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REVISION SHEET Revision Issue Date Revision Page Rev. A May 18, 1994 1st issue -v-
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TABLE OF CONTENTS CHAPTER 1. GENERAL DESCRIPTION CHAPTER 2. OPERATING PRINCIPLES CHAPTER 3. DISASSEMBLY AND ASSEMBLY CHAPTER 4. ADJUSTMENTS CHAPTER 5. TROUBLESHOOTING CHAPTER 6. MAINTENANCE APPENDIX - vi -
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General Description Chapter 1 Table of Contents 1-1 1.1 FEATURES 1-3 1.2 SPECIFICATIONS 1-3 1.2.1 Printing Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.2 Paper Handling Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2.3 Paper Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-7 1.2.4 Ink Ribbon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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List of Tables Table 1-1. Options for LX-105O+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Table 1-2. Print Speed and Printable Columns . . . . . . . . . . . . . . . . . . . . . . . . . l-s Table l-3. CharacterTables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-A Table -4. Adjust Lever Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 -5. Electrical Specifications. . . . . . . . . . . . . . . .
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General Description LX-105O+ Service Manual 1.1 FEATURES The LX-105O+ is a small, light-weight, low-cost, advanced paper handling printer. Its main features are: versions. Different parts are Program ROM version only. The LX-105O+ has four ROM version SOxxxx Standard version: ROM version Slxxxx India version: ROM version S2XXXX Russian version: ROM version S3xxxx Latin version: ROM version S4xxxx South Europe version: c1 Command compatible with following printers. Standard, Latin, and South Euro
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LX-105O+ Service Manual General Description Table 1-1 lists the optional units available for the LX-1050+. Table 1-1. Options for LX-105O+ Cat. No. Description 8143 New Serial Interface Board C82302*/C82304* 32KB Serial Interface C82303* 32KB Parallel Interface 8165 IEEE-488 Interface Board C80624* Single Bin Cut Sheet Feeder [ PullTractorUnit i C80014* 8755 Ribbon Cartridge 1-2 Rev. A
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LX-105O+ Service Manual General Description 1.2 SPECIFICATIONS This section provides detailed statistics for this printer. 1.2.1 Printing Specification Serial, impact, dot matrix Printing Method: Pin Configuration: 9 wires (diameter 0.29rnm) #1 #2 0.29 mm #3 b #4 0.35 mm(l/72”) #5 &--=- I #8 #7 #8 #9 Figure 1-2. Pin Configuration Print direction: Bi-directional printing with logical seeking (Text mode) Uni-directional (left to right) printing (Bit image mode) Print speed: See Table 1-2. Printabl
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General Description LX-105O+ Service Manual lot matrix format: 9 X 9 Text mode (Draft) 18X 20 Text mode (NLQ Ytaracter sets: 13 international character sets ~haracter tables: See Table 1-3. Table 1-3. Character Tables South SW)ck[d India l?~su~ln Latin Character Table E$;mg~ Model Model ITALIC o 0 0 0 0 PC437 (US/ Standard Europe) 0 0 0 o 0 PC850 (Multilingual) o x x x x PC860 (Portuguese) o x x x x x x x PC863 (Canadian-French) o x PC865 (Nordic) x x x o x PC866 (Russian) x x x o x PC855 (Cyril
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General Description LX-105O+ Service Manual 1.2.2 Paper Handling Specification 1/6 inch or 1/8 inch, or programmable in units of 1/216 inch Line spacing: Approximately 95 ms (1/6 inch line feed) Line feed speed: Approximately 75 ms (1/6 inch in page feed) Friction feed Paper feed method: Tractor feed (push tractor: standard, pull tractor: optional) Rear Paper insertion: 1.2.3 Paper Specification Useable paper: Width: 182 to 364 mm (4 to 14.3 inch) Length: 182 to 364 mm (4 to 14.3 inc
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LX-105O+ Service Manual General Description Continuous paper I 345.4 mm max. 13 mm min. 13 mm min. ➤ 4---D I o o Printable area 0 0 0 0 0 0 0 .———————————— n u c1 0 0 0 0 0 0 Figure 1-4. Printable Area - Continuous Paper The adjust lever must be set to the proper position for the paper Adjust lever settings thickness. Table 1-4. Adjust Lever Settings Paper Thickness Lever position I I 0.06 to 0.18 mm 2nd step I 0.19 to 0.25 mm 3rd step I I 2’nd position 4’th position \@ Figure 1-5. Adjust Lever
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General Description LX-105O+ Service Manual 1.2.4 Ink Ribbon #8755 Ribbon Cartridge Type: Black Color: 3 million characters at 14 dots/character Reliability: 1.2.5 Environmental Conditions Temperature: -30 to60“C - Storage 5to35“C - Operation Humidity: 5 to 85 YO RH (no condensation) - Storage 10to801%0 RH (no condensation) - Operation Resistance to shock: 2 G, 1 ms - Storage 1 G, 1 ms - Operation Resistance to vibration: 0.50 G (55 Hz max.) - Storage 0.25 G (55 Hz max.) - Operation 1.2.6 Electr
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LX-105O+ Service Manual General Description 1.3 INTERFACE OVERVIEW The LX-105O+ is equipped with the following external interfaces; ■ Centronics parallel interface ■ Optional Type A interface 1.3.1 Parallel InterFace 8-bit parallel Data Format Synchronization By STROBE pulse By BUSY and ACKNLG signal Handshaking Ill-compatible Signal Level 57-30360 (arnphanol) or equivalent Adaptable Connector Table 1-6 shows the comector pin assignments and signal functions of the parallel interface. BUS Y $1 /
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General Description LX-105O+ Sewice Manual —. . . . -. . — . . .- . . Table 1-6. Connector Pin Assignments and Signal Functions (Cont.) Pin No. Signal Name 1/0 Description This signal indicates whether paper is available in the o printer or not. A HIGH level indicates a no paper 12 PE condition. pulled up to +5V though 3.3KQ resistor in the print,er. , SLCT o 13 If this signal is set to LOW, the printer automatically 14 AUTO FEED XT 1 performs one line feed upon receipt of a CR (carriage return)
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LX-105O+ Service Manual General Description 1.4 PRINTER OPERATIONS This section describes the basic operations of the printer. 1.4.1 Control Panel The control panel of this printer contains four non-lock type push buttons and four LED indicators for easy ope;ation of the various printer function. [Buttons] D POWER 0 ON LINE D READY m PAPER OFF LINE OUT ROMAN JJ NLQ SANS SERIF J J J FORM FEED ~ II I I CON- ON J DENSED OFf= J J LOAD/EJECT LINE FEED II Figure 1-7. Control Panel ON LINE: Switches pr
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LX-105O+ Service Manual General Description 1.4.2 SelecType Functions SelecType allows the user to choose fonts and the printing mode easily. This function provides for selection of Draft, Roman, or Saris Serif fonts and selection of normal printing or condensed printing modes. SelecType is effective only when the printer is ON LINE and not printing. To select Roman or Saris Serif, press the NLQ button. A buzzer sounds when the NLQ button is pressed. When it sounds twice, the Roman font is selec
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L.X-1050+ Service Manual General Description 1.4.5 DIP Switch Settings The two DIP switches are located on the side of the printer and function as shown in Tables 1-7 throum 1-10. Note that the status of the DIP switches is read only at power on or upon receipt of the INIT signal. Table 1-7. Settings for DIP Switch I I I I Faoto~ Description ON OFF SW No. Settings Character Pitch 12 cpi 10 cpi OFF 1-1 1-2 Shape of Zero 0 0 OFF 1 1 I 1-3 OFF Page length See Table 1-10. 1-4 OFF I Italics 1-5 I Tab
