Epson LX-1050+- Manuals

Page 2 - N O T I C E; rights; SEIKO EPSON CORPORATION; Japan

N O T I C E All rights reserved. Reproduction of any part of this manual in any form whatsoever without 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 Ho...

Page 3 - PRECAUTIONS; DANGER

PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal and 2) damage to equipment. Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGERHeadings....

Page 4 - PREFACE; Describes the theory of printer operation.

PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repairof 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 c...

Page 5 - REVISION SHEET; Revision

REVISION SHEET Revision Issue Date Revision Page Rev. May 18, 1994 1st issue

Page 6 - TABLE OF CONTENTS

TABLE OF CONTENTS CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6. APPENDIX GENERAL DESCRIPTION OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY ADJUSTMENTS TROUBLESHOOTING MAINTENANCE vi -

Page 7 - Table of Contents; FEATURES; List; of Figures

Chapter 1 General Description Table of Contents 1.1 FEATURES 1-1 1.2 SPECIFICATIONS 1-3 1.2.1 1.2.2 1.2.41.2.51.2.61.2.71.2.81.2.9 Printing Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Paper Handling Specification. . . . . . . . . . . . . . . . . . . . ....

Page 8 - List of Tables; for

List of Tables Table 1-1. Options for . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1-2. Print Speed and Printable Columns . . . . . . . . . . . . . . . . . . . . . . . . . Table l-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TableT...

Page 9 - A C

Service Manual General Description 1.1 FEATURES The is a small, light-weight, low-cost, advanced paper handling printer. Its main features are: The has four Standard version: India version:Russian version:Latin version: South Europe version: versions. Different parts are Program ROM version only. RO...

Page 10 - Table; Description; PullTractorUnit

General Description Service Manual Table lists the optional units available for the LX-1050+. Table 1-1. Options for Cat. No. Description 8143 New Serial Interface Board C 8 2 3 0 2 * / C 8 2 3 0 4 * Serial Interface C82303* Parallel Interface 8165 IEEE-488 Interface Board C80624* Single Bin Cut She...

Page 11 - General Description; This section provides detailed statistics for this printer.; Pin Configuration; printing with logical seeking (Text mode); Table 1-2. Print Speed and Printable Columns; Type of Letters; Emphasized pica

LX-105O+ Service Manual General Description 1.2 SPECIFICATIONS This section provides detailed statistics for this printer. 1.2.1 Printing Specification Printing Method: Serial, impact, dot matrix Pin Configuration: 9 wires (diameter 0.29rnm) #2 #3 #4 #5 #8 #7 #8 #9 0.29 mm &--=- 0.35 Figure 1-2....

Page 12 - Bulgaria

General Description Service Manual lot m a t r i x f o r m a t : 9 X 9 Text mode (Draft) 18X 20 Text mode sets: tables: 13 international character sets See Table 1-3. Table 1-3. Character Tables India Latin South Character Table Model Model ITALIC o 0 0 0 0 (US/ Standard Europe) o 0 0 0 0 (Multiling...

Page 13 - Paper Handling Specification; ammable in units of 1/216 inch; Specification; Printing

LX-105O+ Service Manual General Description 1.2.2 Paper Handling Specification Line spacing: 1/6 inch or 1/8 inch, or ammable in units of 1/216 inch Line feed speed: Approximately 95 ms (1/6 inch line feed)Approximately 75 ms (1/6 inch in page feed) Paper feed method: Friction feed Tractor feed (pus...

Page 14 - Adjust lever settings; Lever position; nd step

General Description LX-105O+ Service Manual 13 mm min. Continuous paper I 345.4 mm max. ➤ o 0 0 0 I Printable area o 0 0 0 0 0 0 0 n u 0 0 0 13 mm min. Adjust lever settings Figure 1-4. Printable Area - Continuous Paper The adjust lever must be set to the proper position for the paper thickness. 1-4...

Page 15 - Item

Service Manual General Description 1.2.4 Ink Ribbon Type: #8755 Ribbon Cartridge Color: Black Reliability: 3 million characters at 14 dots/character 1.2.5 Environmental Conditions Temperature: -30 to60“C - Storage 5to35“C - Operation Humidity: 5 to 85 RH (no condensation) - Storage 10to801%0 RH (no ...

Page 16 - INTERFACE OVERVIEW; Parallel InterFace; Pin Assignments and Signal Functions; Signal Name

General Description Service Manual 1.3 INTERFACE OVERVIEW Centronics parallel interface Optional Type A interface Parallel InterFace The is equipped with the following external interfaces; ■■ 1.3.1 Data Format 8-bit parallel Synchronization By STROBE pulse Handshaking By BUSY and signal Signal Level...

Page 18 - PRINTER OPERATIONS; This section describes the basic operations of the printer.; OUT; OFF LINE; NLQ; FORM FEED; D E N S E D; II; LINE FEED; Switches printer status between on line and offline.; When the; On when the power switch is on and power is supplied.

General Description LX-105O+ Service Manual 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 of the various printer function. [Buttons] PO...

Page 19 - Functions

LX-105O+ Service Manual General Description 1.4.2 Functions 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 condensedprinting modes. is effective only when the printer is ON L...

Page 21 - Service; Sw

Service General Description Table 1-9. Character Table Selection (DIP SW 1-5: ON) Sw Sw 1-7 Sw 1-8 India Latin South version Version Europe Version I ON ON ON ON ON OFF ON OFF ON ISO Lat. IT ON O F F O F F Bulgaria Code MJK PC437G. O F F ON ON OFF ON OFF 1S088597 OFF O F F ON OFF OFF OFF I Table 1-1...

Page 22 - Reset

General Description Service Manual 1.4.6 Buzzer Operation The buzzer sounds under the following conditions: code: Carriage trouble: Abnormal voltage:Incorrect Incorrect RAMinside CPU: Recognition of panel operation: Factory setting: Sheet ejection failure (in mode): Illegal paper release/ The buzzer...

Page 23 - MAIN; COMPONENTS; Main Control Board; GA; Board Component Layout

Service Manual Description 1.5 MAIN COMPONENTS The main components of the printers are designed for easy removal and replacement to maintain/repair the printers. The main components are: board: Main control board. The CPU on this board controls all main functions. TAPNL-W control panel: Control pane...

Page 24 - Filter Unit; Version

General Description Service Manual 1 . 5 . 2 Filter Unit The filter unit contains a power cord Version) or AC inlet Version), power switch, fuse filter circuit, and power transformer. 120V Version Figure 1-9. Filter Unit Version 1.5.3 Printer Mechanism The printer mechanism was developed specificall...

Page 25 - Chapter 2 Operating Principles; OPERATING PRINCIPLES OF THE PRINTER MECHANISM; List of; Figures

Chapter 2 Operating Principles Table of Contents 2.1 OVERVIEW 2-1 2.2 OPERATING PRINCIPLES OF THE PRINTER MECHANISM 2-1 2.2.1 Printing Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2.2 Carriage Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 26 - of Tables; Main

of Tables Table 2-1. Ribbon-Feed Gear Train. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Table 2-2. Voltage Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Table 2-3. Main . . . . . . . . . . . . . . . . . . . . . . . Table 2-4. Phas...

Page 27 - of the; OPERATING PRINCIPLES OF THE PRINTER MECHANISM; printer mechanism is composed of the; Phase; Feed; Figure 2-1. Block Diagram of the Printer Mechanism

Service Manual Operating Principles 2.1 OVERVIEW This section describes the operating principles of the printer mechanism and the electrical circuits of the 2.2 OPERATING PRINCIPLES OF THE PRINTER MECHANISM The printer mechanism is composed of the unit, paper feed mechanism, carriage drive mechanism...

Page 28 - specifications areas follows:; Printing Operation

Operating Principles Service Manual 2.2.1 Printing Operation The dot-wire operation during printing is as follows. When the head-driving coil for a dot wire is energized, the actuating plate, which is engaged to one end of the dot wire, is attracted to the ironcore, and drives the dot wire toward th...

Page 29 - Operating Principles; Drive Mechanism; The carriage mechanism includes the; Carriage Drive Mechanism; Position Sensor; the carriage is at

LX-1050+ Service Manual Operating Principles 2.2.2 Carriage Drive Mechanism The carriage mechanism includes the the carriage, the timing belt, the carriage motor, and the platen. The timing belt is connected to the bottom of the carriage. The belt is driven by the carriage motorand moved via the bel...

Page 30 - Manual; figure. Because of the

Operating Principles Service Manual 2.2.3 Paper Feed Mechanism Operation Friction feeding is used for cut sheets, and push tractor feeding is used for fanfold paper. Friction-Feed Operation The paper is held against the platen by paper-feed rollers. The paper-feed motor rotates the platen gear, via ...

Page 31 - Push Tractor Feed Operation; Feed Operation; Paper-feed motor specifications are as follows:

Service Manual Operating Principles Push Tractor Feed Operation When the push tractor unit is used, the paper is set such that its holes mesh with the tractor pins along the tractor belt. The paper feed motor is driven and, via the pinion on the motor shaft, rotates the gears in the direction shown ...

Page 32 - Release Sensor; friction feed is in effect.

Operating Principles LX-105O+ Service Manual 2.2.3.1 Paper End Sensor Following figure show the paper end sensor. This sensor switch is ON when no paper is in place (e.g., when the paper supply has run out.). Paper “Paper present” Figure 2-7. Paper End Sensor Mechanism 2.2.3.2 Release Sensor The rel...

Page 33 - the gear trains shown in following table.; Direction of Carriage; Left to right (arrow

Service Manual Operating Principles 2.2.4 Ribbon Advance Mechanism The ribbon-feed mechanism consists of the ribbon cartridge and the ribbon-feed section. The gear is always driven counterclockwise (regardless of the timing belt direction) via the gear trains shown in following table. Table 2-1. Rib...

Page 34 - OPERATING PRINCIPLES OF THE ELECTRICAL; Operating Principles of the Power Supply Circuit; I N; Voltage; Figure 2-10. Power Supply Circuit Block Diagram

Operating Principles LX-105O+ Service Manual 2.3 OPERATING PRINCIPLES OF THE ELECTRICAL This section describes principles of electrical 2.3.1 Operating Principles of the Power Supply Circuit The electrical power required by this mechanism is developed using the Unit (which combines a filter and a po...

Page 35 - Operating Principles of the Main Control Circuit; CPU; Figure 2-11. Main Control Circuit Block Diagram

LX-105O+ Service Manual Operating Principles 2.3.2 Operating Principles of the Main Control Circuit The printer CPU is an 8-bit CPU running at 15 MHz. It oversees control of all the components of the printer. The gate array contains various memory management functions that control the assignment of ...

Page 36 - and Circuits; voltages when the power is switched ON and OFF.

Operating Principles Service Manual Table 2-3. Functions of the Main and Circuits and Circuits Functions Receives data from the host computer and loads the data to the input buffer in RAM. Expands the input data held in the buffer to OHG 2C create image data. Loads this image data to the image buffe...

Page 37 - Sensor Circuit; HOME; Carriage Motor Drive; Phase” Data; SLA; Figure 2-15. Carriage Drive Circuit Block Diagram; Drive Mode; Mode

LX-105O+ Service Manual Operating Principles 2.3.2.2 Sensor Circuit Following figure shows the sensor circuit in block diagram. The of CPU port senses carriage home position. The senses paper end. The senses release lever position. The of CPU A/D convertor senses line voltage. HOME PE RELEASE line C...

Page 38 - paper-feed motor drive circuit is shown in; Figure 2-16. Paper Feed Motor Drive Circuit

Operating Principles LX-1050+ Service Manual 2.3.2.4 Paper Feed Motor Drive Circuit The paper-feed motor drive circuit is shown in paper-feed motor is a step motor which can utilize 2-2 phase excitation. When the paper-feed signal is set to HIGH, Q20 and Q16 are turned on, and +24 V is supplied to t...

Page 39 - D r i v e; Print herd; Drive Circuit; Block Diagram

LX-105O+ Service Manual Operating Principles 2.3.2.5 Drive Circuit Gate array is used as an 8-bit + l-bit data latch. The CPU determines the pulse width for the head-wire drive pulses from gate array by monitoring the drive power (+24 V line). The gate array includes circuitry to interface the CPU a...

Page 40 - The host; shown in following figure. STROBE

Operating Principles Service Manual 2.3.2.6 Host Interface The host interface circuit is shown in following figure. STROBE from the host computer pass through the low-pass filter, consisting of R72 and C12, and flow into the STROBE terminal. These pulses latch the parallel data and set the BUSY sign...

Page 41 - Circuit

Service Manual Operating Principles 2.3.2.7 Circuit The stores in its memory the current feed position of continuously fed paper, as well as the current panel settings. This memory is retained even after power is shut off. can memorize the current position of continuously fed paper, so that this inf...

Page 42 - Chapter 3 Disassembly and Assembly; GENERAL REPAIR INFORMATION; Removal; List of Figures; Control Panel

Chapter 3 Disassembly and Assembly Table of Contents 3.1 GENERAL REPAIR INFORMATION 3-1 3.2 DISASSEMBLY AND ASSEMBLY 3-2 3.2.1 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2.2 Removal of Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 43 - Adjust

Figure 3-25. Paper Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3-27. Tractor Frame l-Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3-28. Extraction . . . . . . . . . ....

Page 44 - This chapter describes the procedures for; Tweezers; Muttimeter

Service Manual Disassembly and Assembly 3.1 GENERAL REPAIR INFORMATION This chapter describes the procedures for and adjusting the main components of the Prior to beginning any of these procedures, be certain that the AC power cord is disconnected. To help prevent hands being cut the printer mechani...

Page 45 - DISASSEMBLY; AND ASSEMBLY; This; the; disassembly procedures for the; Open the cover of the paper tension unit.; Figure

Disassembly and Assembly Service Manual 3.2 DISASSEMBLY AND ASSEMBLY This section details the disassembly procedures for the As a rule, reassembly is performed by simply reversing the procedures; a number of special notes, however, are providedunder the heading “Notes for Reassembly.” When a disasse...

Page 46 - Unlock the two levers securing the; Disconnect the head cable from

Service Manual Disassembly and Assembly [Step 3] Unlock the two levers securing the to Then lift and remove the P Levers Figure 3-2. Removal [Step 4] Disconnect the head cable from Rev.

Page 47 - Remove the two

Disassembly and Assembly Service Manual 3.2.2 Removal of Casing This section details the procedure for removing the upper casing and the control panel. 3.2.2.1 Upper Casing Removal [Step 1] [Step 2] [Step 3] [Step 4] Remove the sheet guide unit, printer cover, paper tension unit, and paper feed knob...

Page 48 - Disassembly and Assembly

LX-105O+ Service Manual Disassembly and Assembly [Step 5] While lifting the upper casing, the cable of the control panel from connector CN3 on the board. Then remove the upper casing. Figure 3-5. Upper Casing -2 NOTE FOR REASSEMBLY: Before reassembling the upper prepare the (Flat Flexible Cable) tha...

Page 49 - Control Panel Removal; control panel to it, and remove the control panel.

Disassembly and Assembly Service Manual 3.2.2.2 Control Panel Removal [Step 1] Remove the upper casing (as described in the previous section). 2] Turn the upper casing over, push in the two notches on the casing that are securing the control panel to it, and remove the control panel. a n e l Figure ...

Page 50 - pulling gently while at the same time holding the board.; remove the; Board Removal; Be

Service Manual Disassembly and Assembly 3.2.3 Removal of Circuit Boards This section describes the procedure for removing the Board and the TA-a filter unit. 3.2.3.1 [Step 1] Board Removal Remove the upper casing (See section 3.2.2.1). The following connectors on the board, which are connecting it t...

Page 51 - Screw; Filter Unit Removal; ALIGNMENTADJUSTMENT

Disassembly and Assembly LX-1050+ Service Manual 3.2.3.2 [Step 1] [Step 2] [Step 3] [Step 4] Filter Unit Removal Remove the upper casing (See section 3.2.2.1).Disconnect connector at the board. This the filter unit. Remove the C. B.(O) x 8) screw securing the frame ground wire. Remove the two C. x 1...

Page 52 - from the base frame.; Figure 3-11. Carriage Motor Mounting Plate Removal; mounting plate, which secure the carriage motor.; Motor Removal; Section 4.1.1 Carriage Motor Backlash Adjustment

LX-105O+ Service Manual Disassembly and Assembly 3.2.5 Disassembly of Printer Mechanism This section details the removal of components from the printer mechanism. 3.2.5.1 Removal of Carriage Motor [Step 1] Remove (See section 3.2.4). [Step 2] Disconnect the motor cable from the carriage motor.[Step ...

Page 53 - Removal of Home-Position; sensor, and remove the sensor from the; HP

Disassembly and Assembly LX-105O+ Service Manual 3.2.5.2 Removal of Home-Position Sensor [Step 1] Remove the printer mechanism. (See [Step 2] Turn the printer mechanism upside-down.[Step 3] Push in the notch securing the home-position base frame. 4) sensor, and remove the sensor from the Notch HP Se...

Page 54 - Remove the paper tension unit.; (M3 x 6) screws securing the platen cover and remove the; When the platen is replaced, perform the following adjustment.

Service Manual Disassembly and Assembly 3.2.5.3 Removal of Platen [Step 1] Remove the printer mechanism. (See section 3.2.4) Remove the paper tension unit. Remove the C-ring (6) from the plate shaft. Ring Figure 3-14. Cresent Ring Removal [Step 4] the two (M3 x 6) screws securing the platen cover an...

Page 55 - Remove the; from the carnage motor and thepaperfeed motor.

Disassembly and Assembly Service Manual 3.2.5.4 Separate of Frame [Step 1] Remove the platen. (See section 3.2.5.3) [Step 2] Remove the printhead. (See section 3.2.1) Remove the head cable holder (L), and head cable holder (R) from base frame. Head Cable’ L Head Cable R Figure 3-16. Head Cable Holde...

Page 56 - of the release lever outward. Remove the release lever.

Service Manual Disassembly and Assembly [Step 6] Push of the release lever outward. Remove the release lever. Figure 3-18. Release Lever Removal When the release lever is replaced, the markings should be analogously positioned. Release Lever L o M a r k i n g Figure 3-19. Release Lever Replacement R...

Page 57 - Separation of Tractor; Figure 3-21. Bottom View of Printer Mechanism

Disassembly and Assembly Service Manual [Step 7] Separate the tractor cancellation cum from paper feed lever cancellation shaft. Disengage Cam LeverDrive Shaft Separation of Tractor Cam [Step 8] Turn the printer mechanism upside-down, and manually move the carriage unit until it is at the cut-out se...

Page 58 - x 6) screws which are securing the side frames to the; of Frame; x6) screws securing the paper feed motor.; When the paper feed motor is removed,

Service Manual Disassembly and Assembly [Step9] Remove the two (0) x 6) screws which are securing the side frames to the base frame, and remove the side frames. Separate side frames from base frame. CBS(0) 6) Screws Figure 3-22. Separate of Frame When the printer mechanism is separated, perform the ...

Page 59 - Removal of Paper End; Remove the paper end sensor.; Removal of Paper Guide Plate; Remove the paper guide plate.; Springs

Disassembly and Assembly Service Manual 3.2.5.6 [Step 1] [Step 2] [Step 3] 3.2.5.7 [Step 1] [Step 2] [Step 3] Removal of Paper End Sensor Separate side frames from base frame. (See section 3.2.5.4) Loosen the two bends securing the paper end sensor to the paper guide at the back of theprinter. Remov...

Page 60 - and remove the adjust lever.; of Tractor Unit

LX-105O+ Service Manual Disassembly and Assembly 3.2.5.8 Removal of Carriage [Step 1] from base frame. (Seesection3.2.5 .4) [Step 2] Remove the HNO (M4) nut Securing and remove the adjust lever. [Step 3] Remove the head adjust lever from thecarriage guide shaft. [Step 4] Remove thecarnageguide shaft...

Page 61 - Remove; NOTES FOR REASSEMBLY:; reassembling, align the phases as shown below.

Disassembly and Assembly LX-105O+ Service Manual [Step 2] Remove tractor set L, the paper support, and tractor set R from the tractor and sprocket guide shafts. Figure NOTES FOR REASSEMBLY: 3-28. Extraction of Tractor Set reassembling, align the phases as shown below. ,- ‘,.-’, Figure 3-29. Tractor ...

Page 62 - Chapter 4 Adjustments; 1-DIRECTIONAL PRINTING ALIGNMENT ADJUSTMENT

Chapter 4 Adjustments Table of Contents 4.1 ADJUSTMENTS 4-1 4.1.1 Carriage Motor Backlash Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.1.2 Paper Feed Motor Backlash Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . 4-24.1.3 Gap Adjustment . . . . . . . . . . . . . ...

Page 63 - A D J U S T M E N T S; section describes the adjustment procedures necessary when the; Tighten the screws on the carriage motor.; Motor Backlash Adjustment; belt

Service Manual Adjustments 4.1 A D J U S T M E N T S This section describes the adjustment procedures necessary when the printer is reassembled or when parts are reinstalled or replaced. These procedures are necessary to ensure the correct operation of the printer. 4.1.1 Carriage Motor Backlash Adju...

Page 64 - Paper Feed Motor Backlash Adjustment; adjustment is required either when the paper; feed motor is replaced or when its mounting; appear feed reduction gear.; Figure 4-2. Paper Feed Motor Backlash Adjustment

Adjustments Service Manual 4.1.2 Paper Feed Motor Backlash Adjustment This adjustment is required either when the paper feed motor is replaced or when its mounting position is shifted. 1. Separate side frames from base frame. (See section 3.2.5.4) 2. Loose the two x 6) screws on the paper feed motor...

Page 66 - up; Manually move the carriage to column 10.

Adjustments Service Manual 8. insert the blade of a screwdriver into the countersink of carnage guide shaft. C o u n t e r s i n k > L a r g e S m a l l \ / ’ ” r--- I Carriage Shaft B I Figure 4-5. Platen Gap Adjustment 9. Adjust the platen gap using a thickness gauge, while rotating carnage gui...

Page 67 - Adjustments

LX-105O+ Service Manual Adjustments 4.2 61-DIRECTIONAL PRINTING ALIGNMENT ADJUSTMENT The printing alignment adjustment is required when the printer mechanism or the main board is replaced. By performing this adjustment, a compensation value is determined for themechanical control as to compensate th...

Page 68 - Chapter 5 Troubleshooting; TROUBLESHOOTING

Chapter 5 Troubleshooting Table of Contents 5.1 OVERVIEW 5-1 5.2 SELF-DIAGNOSTIC FUNCTION 5-2 5.3 TROUBLESHOOTING 5-2 5.3.1 Troubleshooting of Abnormal Operation . . . . . . . . . . . . . . . . . . . . . . . . . 5-35.3.2 Unit Repair - Main Control Board . . . . . . . . . . . . . . . . . . . . . . . ...

Page 69 - Sensor Status; Resistance

Service Manual Troubleshooting 5.1 OVERVIEW Troubleshooting most other serial impact dot matrix printers is difficult to perform, since there may be wide variety of problems. Therefore, the have a sophisticated, built-in function that reduces troubleshooting time by identifying failed parts or compo...

Page 70 - Troubleshooting; S E L F - D I A G N O S T I C F U N C T I O N; Error

Troubleshooting LX-1050+ Service Manual 5.2 S E L F - D I A G N O S T I C F U N C T I O N This section describes the function, in which the controller automatically checks the operating conditions of each component. any abnormality is detected, the printer displays an error message by beep sound. Ta...

Page 71 - Troubleshooting of Abnormal Operation; Symptom

Manual Troubleshooting 5.3 TROUBLESHOOTING This section describes the troubleshooting of abnormal operations and circuit board unit repair. 5.3.1 Troubleshooting of Abnormal Operation This section describes how to detect malfunctions, how to determine the cause, and what actions totake for various t...

Page 72 - The Printer does Not Operate at; All; Table 5-6. The LEDs do Not Operate at All

Troubleshooting LX-105O+ Service Manual Table 5-5. The Printer does Not Operate at All Cause Step The filter unit maybe dead. I The board maybe bead. 4 Checkpoint Finding Is connector on the board disconnected? Yes Is the fuse F1 on the filter unit blown? Yes With the power on, are thereoutput of 26...

Page 73 - Cause

Service Manual Troubleshooting Table 5-8. Carriage Error Displayed Cause Step Checkpoint Finding Solution Check the Turn the printer off and try to move carriage The carriage 1 the carriage manually. Does the No mechanism, and mechanism is bad. carriage move smoothly? replace or reassembly the bad D...

Page 75 - Step

LX-105O+ Service Manual Troubleshooting Table 5-10. Paper is Not Fed (2) Cause The paper end sensormay be dead. The release sensormay be dead. The paper feed motormay be dead. The paper path may bebad. Cause The paper end sensor is dead. 2 3 4 Checkpoint Does the sensor toggle?(Check with Does the s...

Page 76 - Displayed

Troubleshooting Service T a b l e 5 - 1 2 . A b n o r m a l V o l t a g e D i s p l a y e d Cause Step Checkpoint Finding The CR motor, PF Connector and motor or coil 1 disconnect, and power on.Does printer not display abnormal Yes is short. voltage? The board may — be bad. — Table 5-13. Incorrect S...

Page 80 - checkpoints refer to waveforms,; Board

Troubleshooting Service Manual 5.3.2 Unit Repair - Main Control Board This section describes the problems related to the main control board (TAMA). The table belowprovides various symptoms, causes, and checkpoints. checkpoints refer to waveforms, resistance, and other values to be checked to evaluat...

Page 81 - cause

LX-105O+ Service Manual Troubleshooting Table 5-21. Repair of the TAMA Board (Continued) Symptom printer not at all. Condition The CPU is operating. cause reset circuit s not operating. Selection of ROM is is defective CPU is Checkpoint the voltage waveforms at the and for the RESET signal. for osci...

Page 82 - Solution

Troubleshooting LX-105O+ Service Manual Table 5-21. Repair of the TAMA Board (Continued) e..-- - C a u s e Solution Rev.

Page 84 - Tables

Chapter 6 Maintenance Table of Contents 6.1 MAINTENANCE 6-1 6.1.1 Preventive Maintenance . . . . . . . . . .6.1.2 Lubrication and Adhesive Application 6-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 List of Figures Figure 6-1.Figure 6-2. Correct Adhesive Application . . . . . . . . . ....

Page 85 - occurrence of malfunctions.; Lubrication and Adhesive Application; Type; Name; Oil

Service Manual Maintenance 6.1 MAINTENANCE Proper maintenance assures optimal and long-term printer perforrnance and minimizes the occurrence of malfunctions. Be sure to disconnect the the power supply before maintenance. Do not apply thinner, or ketone-based solvents to any of the printer’s plastic...

Page 86 - Maintenance; Lubrication Points; Contact portion of paper feed lever; Oil pad; Adhesive Application Points

Maintenance LX-105O+ Service Manual Table 6-2. Lubrication Points Ref. No. Lubrication Points Lubricant Contact portion of paper feed lever drive shaft and paper feed lever G-26 (2) Contact portion of paper feed lever drive shaft and base frame G-26 (3) Oil pad o-2 (4) Contact portion of release lev...

Page 88 - Appendix; CONNECTOR SUMMARY

Appendix Table of Contents CONNECTOR SUMMARY A-1 CIRCUIT DIAGRAM A-5 CIRCUIT BOARD COMPONENT LAYOUT A-8 EXPLODED DIAGRAM A-9 Figure A-1. Figure A-2.Figure A-3.Figure A-4.Figure A-5.Figure A-6.Figure A-7. List of Figures Interconnection of Major Components . . . . . . . . . . . . . . . . . . . . . . ...

Page 89 - A.1 CONNECTOR SUMMARY; Figure below shows the; HOST COMPUTER; Interconnection of Major Components

Service Manual Appendix A.1 CONNECTOR SUMMARY Figure below shows the between the major components of the T A P N L - W Model 3D60 Printer Mechanism Release PE HOME HEAD I I I II 1 I I I I I I L ---------- HOST COMPUTER Figure A-1. Interconnection of Major Components Rev.

Page 90 - Connector; TAMA

Appendix LX-105O+ Service Manual Table A-1. Connector Summary Connector Description Pins Reference TAMA Control Board Parallel interface Table 1-5 interface board connector 26 pin Table A-2 Control panel 10 pin Table A-3 Release lever 2 pin Table A-4 CR motor and PF motor 12 pin Table A-5 PE sensor ...

Page 92 - Common

Appendix Service Manual T a b l e A - 5 . C o n n e c t o r P i n A s s i g n m e n t - Pin No. 2 3 4 56789 1011 12 Signal Name C R A B C O M CRC o 0 0 0 00 0 0 0 0 0 0 Description CR Phase DCR Phase BCR CD Common CRAB Common CR Phase C CR Phase A PF Phase DPF Phase BPF CommonPF CommonPF Phase C PF ...

Page 93 - Figure A-4. Control Panel Circuit Diagram

Manual Appendix AC INPUT , RI LED I Figure A-3. TA-a Filter Unit Circuit Diagram 4 3 2 10 GREEN GREEN 8 o Figure A-4. Control Panel Circuit Diagram GND ONLINE SW FF SW LF SW SW BUZZER READY LP ONLINE LP PE LP Rev. A-7

Page 94 - A.3 CIRCUIT BOARD COMPONENT LAYOUT; Main Control Board Component Layout

Appendix Service Manual A.3 CIRCUIT BOARD COMPONENT LAYOUT c z II Figure A-5. Main Control Board Component Layout R e v .

Page 95 - EXPLODED DIAGRAM; Exploded Diagram

Service Manual Appendix A.4 EXPLODED DIAGRAM Figure A-6. Exploded Diagram Rev.

Page 96 - Figure A-7. Printer Mechanism Exploded Diagram

Appendix Service Manual Figure A-7. Printer Mechanism Exploded Diagram A-10 Rev. A

Page 97 - EPSON OVERSEAS MARKETING LOCATIONS; Germany

I EPSON OVERSEAS MARKETING LOCATIONS I EPSON AMERICA, INC. EPSON DEUTSCHLAND 20770 Madrona Avenue, 6,4000 11 B OX 2842 Germany Torrance, CA 90509-2642 Phone: 0211-56030 Phone: (800) 922-8911 Fax: 0211-504-7787 Fax: (310) 782-5220 EPSON UK LTD. EPSON FRANCE Campus 100, Maylands Avenue, 68 bis, rue 92...

Page 98 - EPSON