Epson C82305/06 (Serial I/F)- User Manual

Page 4 - PREFACE

REV.-B PREFACE T h i s m a n u a l d e s c r i b e s f u n c t i o n s , t h e o r y o f e l e c t r i c a l a n d m e c h a n i c a l operations, maintenance, and repair of the 070. T h e i n s t r u c t i o n s a n d p r o c e d u r e s i n c l u d e d h e r e i n a r e i n t e n d e d f o r t h e...

Page 5 - REVISION SHEET; D A T E I S S U E D

REVISION SHEET D A T E I S S U E D C H A N G E D O C U M E N T A J u n e 2 0 , 1 9 9 1 1st issue B S e p t . 6 , 1 9 9 1 Added information for the LQ-1 070: l-i, l-ii, 1-1 - 1 - 8 , 1 - 1 0 , 1 - 1 1 , 1 - 2 4 , 1 - 2 6 - 1 - 2 8 2-i, 2-ii, 2-1 - 2 - 1 1 , 2 - 1 3 - 2 - 1 5 , 2 - 1 7 , 2 - 1 8 3 - i...

Page 6 - TABLE OF CONTENTS

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

Page 8 - LIST OF FIGURES; Exterior View of the; LIST OF TABLES; S p e c i f i c a t i o n s f o r C u t S h e e t s

LIST OF FIGURES Figure 1-1. Figure 1-2. Figure 1-3. Figure 1-4. Figure 1-5. Figure 1-6. F i g u r e 1 - 7 . Figure 1-8. F i g u r e 1 - 9 . F i g u r e l - 1 0 . F i g u r e 1 - 1 1 . F i g u r e 1 - 1 2 . F i g u r e 1 - 1 3 . F i g u r e 1 - 1 4 . F i g u r e 1 - 1 5 . F i g u r e 1 - 1 6 . T a b ...

Page 10 - Film ribbon cartridge

REV.-B Note: T a b l e 1 - 2 . O p t i o n a l U n i t s Model Description Single-bin cut-sheet feeder (80-column) High-capacity cut-sheet feeder (80-column) cut sheet feeder (1 36-column) High capacity cut sheet feeder (1 36-column) C 8 0 0 1 9 * Tractor unit (80-column) Tractor unit (1 36-column) ...

Page 11 - Specifications

REV.-B 1.2 SPECIFICATIONS This section provides specifications 1.2.1 Hardware Printing method Pin configuration Feeding methods Line spacing Paper insertion Paper-feed speed for the 070 printer. Specifications Serial, impact, dot matrix 24 wires X 2 staggered, diameter 0.2 mm) Wires 1 2 I - - - - - ...

Page 14 - Printable area; insertion) or more when paper width is 229 mm; F i g u r e 1 - 4 . P r i n t a b l e A r e a f o r C o n t i n u o u s S h e e t s

Printable area See figures 1-3, 1-4, and 1-5 t o p i n s e r t i o n 1 4 8 - 257 m m ( 5 . 8 1“) 148 - 257 420) 10. 1“ 1 6 . 5 ) ) f r o n t i n s e r t i o n 1 8 2 257 mm (7.2 10 1“) 182 257 364) mm (7.2 1“ 14.3’”)) . , , P r i n t a b l e area max. 203.2 mm (8 in.) -1 mm 3 6 4 m m (14.3”) max. / ,...

Page 22 - INTERFACE OVERVIEW

REV.-A 1.3 INTERFACE OVERVIEW The printer has a parallel interface with the specifications described below. 1.3.1 Parallel Interface Specifications for the 8-bit parallel interface are as follows: Data format Synchronization Handshaking Signal level A d a p t a b l e c o n n e c t o r Data transmiss...

Page 26 - DIP Switch Settings; JUMPER SETTING

1.5 DIP SWITCHES AND This section describes the DIP switch DIP Switch Settings JUMPER SETTING selections and jumper setting for the printer. The two DIP switch banks for the printer, located on control panel, function as shown in tables 1-12 through 1-15. (Note that the status of the DIP switches is...

Page 28 - OPERATING INSTRUCTIONS; o f f; I n v a l i d

REV.-A 1.6 OPERATING INSTRUCTIONS This section describes the self-test and hexadecimal dump functions and also includes the error states, printer initialization, and buzzer operation. 1.6.1 Self-Test To run the self-test using draft mode, turn the printer on while pressing the L O A D / E J E C T b ...

Page 33 - . 6 . 1 1 P r i n t e r P r o t e c t i o n; f o r H e a v y - D u t y P r i n t i n g; resumes at a lower print speed at first.

REV.-A 1 . 6 . 1 1 P r i n t e r P r o t e c t i o n f o r H e a v y - D u t y P r i n t i n g This printer has a printhead protection function to prevent it from overheating and to protect the printer when the head driver voltage drops. If head temperature exceeds its maximum value, printing stops ...

Page 38 - F i g u r e 2 - 1 2 . P a p e r P a t h f o r B o t t o m E n t r a n c e P u l l T r a c t o r F e e d . . . 2 - 8

REV.-B F i g u r e 2 - 1 2 . P a p e r P a t h f o r B o t t o m E n t r a n c e P u l l T r a c t o r F e e d . . . 2 - 8 Figure 2-13. Paper Path for Front Entrance Friction Feed. . . . . . . . . . . . . . . 2-9 Figure 2-14. Paper Path for Front Entrance Pull Tractor Feed. . . . . . . 2-9 F i g u r...

Page 39 - OVERVIEW OF PRINTER MECHANISM OPERATION; Mechanism; Works

REV.-B 2.1 OVERVIEW OF PRINTER MECHANISM OPERATION This section describes the PRINTER MECHANISM of the printer unit and explains how the printer works. The has a PRINTER MECHANISM that features a 24-pin impact I dot for serial printing. There are four main parts to the printer mechanism: 1) the mech...

Page 41 - Friction Feed Method

2.1.3 Paper Feed Mechanism Cut sheet paper is advanced by friction feed. Continuous form paper is advanced using a tractor feedm e c h a n i s m . There are three ways to advance the paper with tractor feed: using the push tractor, using the pull tractor, using the push and pull tractors together. A...

Page 44 - Figure 2-9. Paper Path for Top Entrance Friction Feed

I REV.-B The LEVER, RELEASE switches between friction feed and tractor feed. Setting the LEVER, RELEASE to the friction feed position presses the paper advance roller against the PLATEN. Setting the release lever to the tractor feed position releases this pressure, so that the paper advance roller s...

Page 45 - F e e d

REV.-B Rear entrance paper insertion When you feed paper into the printer through the rear entrance, the method to advance be: the push tractor, or the push-pull tractor. The rear paper-out detector senses when run out. Paper (Continuous) \ ROLLER PAPER EJECT PAPER GUIDE TRACTOR DETECTOR Paper Feed ...

Page 46 - Figure 2-12. Paper Path for Bottom Entrance Pull Tractor Feed

REV.-B B o t t o m e n t r a n c e p a p e r i n s e r t i o n When you feed paper into the printer through the bottom entrance, the pull tractor advances the paper. The front paper-out detector senses when the paper runs out. Paper (Continuous) PF Drive Roller / F r o m B o t t o m I n s e r t i o ...

Page 48 - Ribbon Advance

REV.-B 2 . 1 . 4 R i b b o n A d v a n c e M e c h a n i s m The ribbon drive gear advances the ribbon through a gear linkage. This arrangement of gears makes the ribbon drive gear always rotate in a counterclockwise direction, regardless of the direction the carriage is moving. T a b l e 2 - 2 . R ...

Page 49 - POWER SUPPLY OPERATION; Overview

2.2 POWER SUPPLY OPERATION The printer can be powered by either of two power supply boards: the 120 V board or the 220/240 V board. The only difference in the way these two boards operate is in the primary circuitry. How they work to supply power to the printer is identical. These power boards outpu...

Page 50 - Block Diagram

Second, there are four circuits to protect the supply circuitry and avoid danger. The +5 line contains a current overload protection circuit and a voltage overload protection circuit. The current overload protection circuit is part of the + 5 supply circuit. It cuts the + 5 line if the current is to...

Page 51 - CONTROL CIRCUIT OPERATION; Control Circuit Operation Overview; B o a r d

REV.-B 2.3 CONTROL CIRCUIT OPERATION The control circuit consists of two boards: the MAIN board, which acts as the main board, and the board, which acts as the control panel board. This section describes how these boards work. 2.3.1 Control Circuit Operation Overview T h e p r i n t e r C P U i s a ...

Page 52 - I I; Table 2-5. Functions of the Main and Circuits

I REV.-B Table 2-5 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded to RAM. Each line of data is processed sequentially. The CPU transfers the print data ...

Page 53 - Reset; C i r c u i t; When turning on the power supply

REV.-B Table 2-5. Functions of the Main a n d C i r c u i t s ( C o n t . ) or Circuit Location Functions 2A This is a single chip that houses drive circuits for the printhead, and MOTOR, PF of the PRINTER MECHANISM. The chip also includes the various sensor input circuits for the PRINTER MECHANISM....

Page 54 - Sensor Circuit Block Diagram

REV.-A Power On CPU Self Reset +5 V Line Figure 2-20. RESET Signal Timing 2.3.3 Sensor Circuits Figure 2-21 shows the sensor circuits in block diagram form. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the signal, pas...

Page 55 - M O T O R , C R D r i v e C i r c u i t

REV.-B 2 . 3 . 4 M O T O R , C R D r i v e C i r c u i t Figure 2-22 shows the MOTOR, CR drive circuit. An open-loop, constant-current drive arrangement is used for running the MOTOR, CR. The motor is driven by 2-2 phase excitation and 1-2 phase excitation. 2-2 phase excitation corresponds to two 1-...

Page 57 - D r i v e C i r c u i t; Figure 2-25. Head Drive Signal Output Timing

REV.-A 2 . 3 . 6 D r i v e C i r c u i t Figure 2-24 shows the drive circuit in block diagram form. The print data already has been expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the The CPU samples the voltage of...

Page 61 - Precautions for Disassembling the Printer

REV.-A 3.1 OVERVIEW This section describes the various points to note when disassembling and assembling the printer. 3.1.1 Precautions for Disassembling the Printer Follow the precautions below when disassembling the printer. W A R N I N G Before disassembling, assembling, or adjusting the printer, ...

Page 64 - DISASSEMBLY AND ASSEMBLY; Disassembling the Printer Mechanism

REV.-A 3.2 DISASSEMBLY AND ASSEMBLY This section describes the procedures for disassembling and assembling the main components of the printer. When the procedure for installing a component into the printer is simply the reverse of the procedure for removing the component, no description of how to in...

Page 66 - Removing the Printer Case; picture

REV.-B 3.2.2 Removing the Printer Case This section describes how to remove the front case and HOUSING UPPER. 3.2.2.1 Removing the FRONT 1. Remove the COVER PRINTER, FRONT. 2. Remove the HOUSING, FRONT. 3. Use a screwdriver to release the clips that hold the front case to the HOUSING UPPER. Open the...

Page 67 - Removing the Circuit Boards; X 1 4 ) S c r e w

REV.-B 3.2.3 Removing the Circuit Boards This section describes how to remove the BOARD MAIN MAIN board), the BOARD P O W E R S U P P L Y board) and the BOARD PANEL PNL board). 3 . 2 . 3 . 1 R e m o v i n g t h e B O A R D M A I N M A I N 2. 3. 4. 5. 6. 7. Remove the HOUSING ASSY.,UPPER (see Section...

Page 68 - Point to Note for Assembly and Adjustment; GROUNDING WIRE

REV.-B Point to Note for Assembly and Adjustment After replacing the BOARD MAIN, you must adjust the bidirectional print position again to ensure bidirectional printing is correctly aligned (see Section 4.2). 3.2.3.2 Removing the BOARD POWER SUPPLY Board) 1. Remove the HOUSING UPPER (see Section 3.2...

Page 72 - Remove the TIMING BELT from the carriage.; ADJUST

REV.-B 3.2.5.4 Removing the Carriage 2. 3. 4. Remove the FFC (CABLE, HEAD, (see Section 3.2.5.3). Remove the TIMING BELT from the carriage. Use the box driver to rotate and free the adjusting bushing. This bushing holds the SHAFT, CR, GUIDE to the FRAME, MAIN, RIGHT. Remove the bushing. Remove the c...

Page 73 - Remove the PRINTER MECHANISM from the HOUSING; Mark

REV.-B 3.2.5.5 Removing the PLATEN 2. 3.4.5. 6. 7. Remove the PRINTER MECHANISM from the HOUSING LOWER (see Section 3.2.4). Remove the two X 10) screws that hold the COVER, PLATEN, LOWER to the left and FRAME, MAIN, RIGHT. Remove the COVER, PLATEN, LOWER. Remove the COMPRESSION SPRING, 200 that hold...

Page 74 - Remove the PRINTER MECHANISM from the HOUSING; Point to Note for Assembly; Mark Side; Figure 3-18. Direction for Inserting the PLAIN WASHER

REV.-B 3.2.5.6 Removing and Disassembling the FRAME, MAIN, RIGHT 1. Remove the PRINTER MECHANISM from the HOUSING LOWER (see Section 3.2.4). 3. 4. 5. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). Remove the MOTOR, CR from the FRAME, MAIN, BASE (see Section 3.2.5. 1). Remove the...

Page 76 - C O M P R E S S I O N S P R I N G , 1 3 0 0

REV.-B 9. While holding down the three LEVER PF, pull out and remove the SHAFT, RELEASE Remove the LEVER PF and the COMPRESSION SPRING, 1300 from the PAPER GUIDE. 10. While holding open the clips that secure the DETECTOR RELEASE to the PAPER GUIDE, remove the DETECTOR RELEASE. LEVER PF ( * T h i s p...

Page 79 - RETAINING RING

REV.-B 3.2.5.12 Disassembling the TRACTOR 2. 3. 4. 5. Remove the TRACTOR from the printer. Remove the SPUR GEAR, 17 from the SHAFT, TRACTOR. Remove the FRAME, TRACTOR, RIGHT from the SHAFT, TRACTOR and the SHAFT, TRACTOR, GUIDE. Remove RETAINING RING from the SHAFT, TRACTOR. Remove the TRACTOR ASSEM...

Page 80 - F i g u r e 3 - 2 8 . A r r a n g i n g t h e C a b l e s

3.2.5.13 Arranging the Cables Figure 3-28 shows how the cables are arranged for the PRINTER MECHANISM. When assembling the printer, make sure that the cables are laid out as shown in this figure. PRINTER MECHANISM (Bottom) n (*This is an 80-column printer.) F i g u r e 3 - 2 8 . A r r a n g i n g t ...

Page 82 - ADJUSTING THE PRINTER MECHANISM; accuracy of character alignment during printing suffers.

REV.-B 4.1 ADJUSTING THE PRINTER MECHANISM This section describes the various adjustments you may need to make to the PRINTER MECHANISM. 4.1.1 MOTOR, CR Backlash Adjustment In the MOTOR, CR backlash adjustment, the pinion gear of the MOTOR, CR is meshed the BELT PULLEY cog. If the pinion gear is poo...

Page 83 - Box Driver

I I I I REV.-B 4 . 1 . 2 P l a t e n G a p A d j u s t m e n t If you have rotated or reassembled the SHAFT, CR, GUIDE or the adjusting bushing, or if printing is abnormal, you must adjust the gap between the PLATEN and the 2. 3. 4. 5. 6. 7. 8. Remove the PRINTER MECHANISM from the HOUSING LOWER (se...

Page 85 - BIDIRECTIONAL PRINT POSITION ADJUSTMENT; Overview of Bidirectional Print Position Adjustment

REV.-B 4.2 BIDIRECTIONAL PRINT POSITION ADJUSTMENT This section describes how to adjust the bidirectional print position to ensure correct printing alignment. 4.2.1 Overview of Bidirectional Print Position Adjustment This printer prints characters when the carriage is moving in either direction (i.e...

Page 87 - CIRCUIT ADJUSTMENT

REV.-B 4.3 CIRCUIT ADJUSTMENT The BOARD MAIN MAIN BOARD) contains variable resistor which is used for balancing the circuitry. When any of the following parts are replaced, the circuitry must be balanced again by adjusting this variable resistance: RI 5, R13, and VR 1 If the circuitry is not correct...

Page 88 - REPAIR OF THE BOARD; Motor and

REV.-B 5.1 5.2 5.3 5 . 4 CHAPTER 5 TROUBLESHOOTING OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 REPAIR BY UNIT REPLACEMENT . . . . . . . . ....

Page 89 - . 1 O V E R V I E W; S T A R T

5 . 1 O V E R V I E W Problems in the printer may exhibit a variety of troubleshooting, symptoms, unless you follow the procedure shown in the S T A R T 5 . 2 5 - 2 Repair byunit replacement REV.-B which can complicate the task of flowchart below. 1 5 . 3 5 - 1 4 5 . 4 5 - 1 5 Repair of the R e p a ...

Page 90 - REPAIR BY UNIT REPLACEMENT

REV.-B 5.2 REPAIR BY UNIT REPLACEMENT For most problems, it is sufficient for you to determine the difficulty to the unit level. Refer to Table 5-3, identify what the problem is, then perform the checks according to the corresponding flowchart. Table 5-3. and Reference Symptom Problem See Page Print...

Page 91 - (1) Printer Fails to Operate when Power is On; PRINTER

REV.-B (1) Printer Fails to Operate when Power is On S T A R T correct AC input voltage. Replace the fuSeand disconnect the main No is turned ON Measure the output voltage from the Power board. . No Replace the PRINTER MECHANISM. 1 Replace the BOARD PoWER SUPPLY. I 1 I END 5-3

Page 96 - Terminal Assignment )

REV.-A # 2 0 # 4 0 # 6 0 # 8 0 # 2 0 # 2 4 @ { @ @ @ @ ~ # #16 cOM. 21 #5 < Terminal Assignment ) o o #5 o #7 o #9 o #11 o #15 o #17 o #19 o #21 o < Wire Assignment ) Coil Resistance:45.5 at 25°C (Between each dot wire and common.) Figure 5-2. Printhead Resistance 5-8

Page 97 - Repair of the PRINTER

(4) Paper Feeding is Abnormal (but Printing is Normal) S T A R T No L o a d t h e p a p e r c o r r e c t l y . i A platen knob rotate manually with power R e f e r t o 5.5, Repair of the PRINTER MECHANISM. I Replace the BOARD MAIN. No No Replace the BOARD MAIN. R e f e r t o 5.5, Replace the BOARD ...

Page 98 - END; NOTE: Perform bidirectional print alignment adjustment.

No Yes 1 Replace logic PCB. R e p l a c e d e f e c t i v em oto r. NOTE NOTE B C h e c k m o t o r r e s i s t a n c e . P e r f o r m f i n a l t e s t . No Replace motor and c a b l e . END NOTE R e p l a c e m o t o r . Yes NOTE No No v 1 Yes I P e r f o r m f i n a l t e s t . NOTE: Perform bid...

Page 100 - Control Panel Operation is Abnormal; MAIN connected; the

REV.-B (5) Control Panel Operation is Abnormal MAIN connected Reinsert connector CN3 c o r r e c t l y . Is the f a u l t c o r r e c t e d ? Yes I END v Replace the BOARD P A N E L . No Replace the BOARD MAIN. Replace the BOARD MAIN. Replace the BOARD P A N E L . 5-12

Page 101 - (6) Printing of Data Sent by the Host Computer is Faulty

(6) Printing of Data Sent by the Host Computer is Faulty NOTE: It is assumed here that the host computer is operating normally. P e r f o r m s e l f - t e s t p r i n t i n g . No Refer to other troubleshooting i t e m s . Replace the BOARD MAIN. I L I I 5 - 1 3

Page 102 - REPAIR OF THE MAIN BOARD

I REV.-B 5.3 REPAIR OF THE MAIN BOARD This section provides instructions for repairing the BOARD describes various symptoms, likely causes, and checkpoints. MAIN when Checkpoints refer to it is defective and proper waveforms, resistance values, and other values to be checked to evaluate the operatio...

Page 103 - RAM is

REV.-B Problem printer not at all. carriage abnormally. Table 5-4. Repair of a Problem in the BOARD MAIN (Cont.) Symptom The CPU doesnot operate. The carriage does not op-erate at all. Carriage oper-ation is unsta- ble (lack of torque). Cause Either ROM or RAM is defective. CPU is defective. ICI C i...

Page 105 - REPAIR OF THE PRINTER MECHANISM

5.4 REPAIR OF THE PRINTER MECHANISM For detailed procedures for replacing or adjusting parts, refer to Chapter 3, and Chapter 4, Adjustment. If a problem or symptom recurs following an attempted repair, refer to Table 5-5 to try to find other potential causes. Table 5-5. Repair of the PRINTER MECHAN...

Page 108 - Table

REV.-B 6.1 6.2 CHAPTER 6 M A I N T E N A N C E PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 LUBRICATION AND ADHESIVE APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 LIST OF F...

Page 109 - Type

REV.-B 6.1 PREVENTIVE MAINTENANCE Preventive maintenance includes regular cleaning of the case exterior (using denatured alcohol), as well as occasional vacuuming of the mechanism’s interior to remove dust and paper debris. After cleaning the unit, check that it is adequately lubricated (as describe...

Page 111 - Lubrication Points

Page 115 - C O N N E C T O R S U M M A R Y; functions and sizes of the connectors.; B O A R D

REV.-B C O N N E C T O R S U M M A R Y Figure A-1 illustrates the interconnection of the primary components. Table A-1 summarizes the functions and sizes of the connectors. BOARD PANEL M o d e l 5 E 1 0 / 5 E 6 0 P R I N T E R M E C H A N I S M GAP LEVER CRHOME CR MOTOR PF MOTOR H E A D H E A D B O ...

Page 119 - Diagram; POWER

z b - 1 I I r I I -1 Diagram I POWER PSB Figure A-4. BOARD A-7

Page 120 - I I I; II; PSB Board) Circuit Diagram

REV.-B I I I II T . . Figure A-5. BOARD POWER I PSB Board) Circuit Diagram A-8

Page 124 - BOARD COMPONENT LAYOUT; MAIN

REV.-B A-3. BOARD COMPONENT LAYOUT I 1 1 1 I111 1 I 1 11 11 1 1 11 1 1 I + 5 Figure A-9. BOARD MAIN MAIN Board) Component Layout A-1 2

Page 127 - PNL BOARD) Component Layout

REV.-B — — — Figure A-1 2. BOARD ASSY., PANEL PNL BOARD) Component Layout A-1 5

Page 128 - Exploded Diagram

Page 132 - A.5 CASE OUTLINE DRAWING; m m; Case Outline Drawing

A.5 CASE OUTLINE DRAWING u“ I J 1- b 368 m m 151 m Figure A-1 7. Case Outline Drawing A-22

Page 134 - EPSON; SEIKO EPSON CORPORATION

EPSON SEIKO EPSON CORPORATION PRINTER DIVISION EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. EPSON DEUTSCHLAND 20770 Madrona Avenue 6, 4000 Dusseldorf 11 Torrance CA 90503, U.S.A. Germany Phone: (2 13) 782-0770 Phone: (02 1 1) 56030 Fax: (213) 782-5248 Fax: (21 1) 504-7787 EPSON UK LTD. EPS...

Page 136 - Addendum; The AP5000 is mechanically and electronically the; a list of the unique parts for the Epson ActionPrinter 5000/5500.

Addendum The AP5000 is mechanically and electronically the same as the LQ-570. The AP5500 is mechanically and electronically the same as the LQ-1070. All the information contained herein is equally applicable to both printers. With the exception of a few parts, all parts for the ActionPrinter 5000/5...

Page 137 - ActionPrinter; 4-PIN DOT MATRIX PRINTERS

LQ-570/1070 ActionPrinter ™ 5000/5500 24-PIN DOT MATRIX PRINTERS TM-LQ57AP5

Page 138 - SERVICE MANUAL

L Q - 5 7 0 / 1 0 7 0 SERVICE MANUAL EPSON Printed on Recycled Paper

Page 139 - NOTICE

NOTICE 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 subject to change without notice. All efforts have been made to ensure the accuracy of the contents of this manual...

Page 140 - P R E C A U T I O N S; DANGER

REV.-A P R E C A U T I O N S 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 proced...

Page 143 - REVISON; st issue

REV.-B REVISION SHEET REVISON DATE ISSUED C H A N G E D O C U M E N T A June 2 0 , 1991 1st issue B July 26, 1991 Added information for the LQ-1070: l - i , l - i i , l - l l - 8 , l - 1 0 , l - l 1 , l - 2 4 , l - 2 6 l - 2 8 2-i, 2 - i i , 2 - l 2-1 1, 2-13 2-15, 2-17, 2-18 3-i, 3-ii, 3-5 3 - 2 0 ...

Page 144 - D I S A S S E M B L Y A N D A S S E M B L Y

REV.-A TABLE OF CONTENTS CHAPTER 1.CHAPTER 2.CHAPTER 3. CHAPTER 4.CHAPTER 5. CHAPTER 6.A P P E N D I X GENERAL DESCRIPTIONOPERATION PRINCIPLES D I S A S S E M B L Y A N D A S S E M B L Y A D J U S T M E N T S TROUBLESHOOTING M A I N T E N A N C E - vi -

Page 147 - auto; Model; Serial interface

REV.-B 1.1 FEATURES T h e L Q - 5 7 0 / 1 0 7 0 a r e s m a l l , l i g h t - w e i g h t , l o w - c o s t , p r i n t e r s w i t h a d v a n c e d p a p e r h a n d l i n g t h a t i s compatible with the LQ-510/550/1010. The printer’s main features are as follows: Use of ESC/P 2 control codes Ab...

Page 149 - . 2 S P E C I F I C A T I O N S

1 . 2 S P E C I F I C A T I O N S This section provides specifications for the LQ-570/1070 printer. 1.2.1 Hardware Specifications Printing method Serial, impact, dot matrix Pin configuration 24 wires (12 X 2 staggered, diameter 0.2 mm) Feeding methods Line spacing Paper insertion Paper-feed speed Fi...

Page 150 - Do

REV.-B l Use the paper tension unit. Do not use multi-part cut-sheet forms, except with front insertion. Do not perform reverse feeds greater than inch when using envelopes. 2. Push tractor feed (release lever in REAR PUSH POSITION). Paper must be loaded from the rear entrance. Release the friction-...

Page 151 - Place; Do not perform reverse feeds.

REV.-B Table 1-4. Specifications for Cut Sheets (Carbonless Duplicating Paper) mm to 2 16 (‘364) mm (7.2 in. to 8.5 (‘I 4.3) in.) 257 mm to 297 mm (10.1 in. to 11.7 in.) 0.065 mm to 0.14 mm (0.0025 in. to 0.0055 in.)-single sheet0.12 mm to 0.32 mm (0.0047 in. to 0.012 in.)- total 17 lb to 24 lb (52....

Page 152 - Figure 1-3. Printable Area for Cut Sheets

REV.-B Printable area See figures 1-3, l-4, and l-5 (80 column): 136 column) l mm (0.12 in.) or more when paper width is less than 229 mm (9 in.). 24 mm (0.9 in.)(top insertion)/26 mm (1 .O in.)(front insertion) or more when paper width is 229 mm (9.0 in.) to 257 mm (10.1 in.). (136 column:) 3.0 mm ...

Page 156 - Invalid

REV.-B NOTES: High-speed draft is valid if the printer status is as follows: High-speed draft is selected by DIP switch. l Emphasized character mode is not selected. Condensed character mode is not selected. Draft is selected. No D/L (download) characters are sent to the printer. The horizontal dot ...

Page 157 - dots per; inch; inches per second

REV.-B Table 1-9. Printing (Bit Image Mode) 8 Single-density 6 0 16) 2 1 .o 8 Dual-density 1 2 0 1632) 10.5 8 Double-speed, dual-density 120 I 2 8 Quadruple-density 2 4 0 10.5 8 CRT graphics 8 0 1088) 10.5 8 CRT graphics II 9 0 14.0 24 Single-density 6 0 16) 2 1 . 0 24 Dual-density I 1 2 0 I 1632) 1...

Page 158 - Table l-10. Character Matrix and Character Size; HDD is horizontal dot density; in

REV.-A Table l-10. Character Matrix and Character Size LQ, proportional, condensed NOTES: HDD is horizontal dot density in dots per inch. Face matrix and character size indicate the size of the maximum character. This value is dependent on paper, ribbon, etc. Unit ESC sp (which also can be sent as u...

Page 160 - Table l-l 1. Connector Pin Assignments and Signal Functions

1.3 INTERFACE OVERVIEW The printer has a parallel interface with the specifications described below. 1.3.1 Parallel Interface Specifications for the 8-bit parallel interface are as follows: Data format Synchronization Handshaking Signal level Adaptable connector Data transmission timing BUSY ACKNLG ...

Page 161 - to

Table l-l 1. Connector Pin Assignments and Signal Functions (Cont.) REV.-A s a line feed upon input of the GND Ground for twisted-pair grounding. Not used. O U T Always HIGH. (Pulled up to through ohm resistor.) 3 6 SLCT-IN IN control is disabled. NOTES: 1. “Dir.” indicates the direction of the sign...

Page 162 - B U T T O N S; This button turns on the power supply to the printer.

REV.-A 1.4 CONTROL PANEL On the control panel are: a power button (labeled OPERATE), 7 non-lock type buttons, and 19 indicators. Figure 1-7. Control Panel B U T T O N S (1) OPERATE Button This button turns on the power supply to the printer. (2) PAUSE Button This button controls printer action. Pres...

Page 163 - I N D I C A T O R S

REV.-A (7) FONT Button Pressing this button selects a font, and it continuously selects the next one, sequentially. The FONT LED indicates the currently selected font. (8) CONDENSED Button Pressing this button toggles the printing mode between normal and condensed, alternatively. NOTE: Selections of...

Page 164 - DIP SWITCHES AND JUMPER SETTING; S w i t c h S e t t i n g s

1.5 DIP SWITCHES AND JUMPER SETTING This section describes the DIP switch selections and jumper setting for the LQ-570 printer. 1.5.1 DIP S w i t c h S e t t i n g s The two DIP switch banks for the printer, located on control panel, function as shown in tables l-l 2 through l-l 5. (Note that the st...

Page 166 - o n

REV.-A 1.6 OPERATING INSTRUCTIONS This section describes the self-test and hexadecimal dump functions and also includes the error states, printer initialization, and buzzer operation. 1.6.1 Self-Test To run the self-test using draft mode, turn the printer on while pressing the LOAD/EJECT button. To ...

Page 168 - Automatic cut-sheet loading without the cut-sheet feeder

REV.-A (a) Initializes printer mechanism. (b) Clears input data buffer. (c) Clears downloaded character set. (d) Clears print buffer. (e) Returns printer settings to their default values. (2) Software initialization Input of the ESC command also initializes the printer. Printer initialization by ESC...

Page 169 - and the LINE FEED/FORM FEED button moves the paper backward.

REV.-A Automatic cut-sheet loading and ejection with cut-sheet feeder Move the release lever to the friction-feed position, and place the sheets into the hopper of the cut-sheet feeder. Pressing the LOAD/EJECT button loads one sheet to the top-of-form position. If a paper-out is detected before prin...

Page 172 - . 7 M A I N C O M P O N E N T S; The

REV.-B 1 . 7 M A I N C O M P O N E N T S The main components of the LQ-570/1070 printers are designed for easy removal and replacement to maintain and repair the printer. The main components are: 1) CO62 MAIN board: the main control board; the CPU on this board controls all main functions. 2) CO62 P...

Page 174 - Printer Mechanism

REV.-B 1 . 7 . 4 P r i n t e r M e c h a n i s m ( M - 5 E 1 0 / M - 5 E 6 0 ) The printer mechanism was developed specifically for use with LQ-570/1070 printer. T h e c o m p o n e n t s i n c l u d e a c a r r i a g e m o t o r , c a r r i a g e m e c h a n i s m , p a p e r - f e e d m o t o r , ...

Page 175 - Carriage; Paper Path for Rear Entrance Push-Pull

REV.-B CHAPTER 2 OPERATION PRINCIPLES 2.1 OVERVIEW OF P R I N T E R M E C H A N I S M OPERATION.. ............. 2-1 2 . 1 . 1 P r i n t h e a d M e c h a n i s m .............................................................. 2-1 2 . 1 . 2 Carriage M o v e m e n t Mechanism.. ...........................

Page 177 - PRINTER MECHANISM

REV.-B 2.1 OVERVIEW OF PRINTER MECHANISM OPERATION This section describes the PRINTER MECHANISM of the printer unit and explains how the printer works. The has a PRINTER MECHANISM that features a 24-pin impact dot printhead for serial printing. There are four main parts to the printer mechanism: 1) ...

Page 178 - when the carriage is in the home position.; Left; Movement; its; either toward or away

REV.-B 2.1.2 Carriage Movement Mechanism A timing belt is connected to the carriage on the lower side. With the printhead installed, this carriage moves in either direction along the SHAFT, CR, GUIDE. The carriage is driven by the MOTOR, CR a stepping motor that drives the TIMING BELT via the BELT P...

Page 179 - Table 2-1. Paper Advance Methods and Paper Paths; OK; PLAT

REV.-B 2.1.3 Paper Feed Mechanism Cut sheet paper is advanced by friction feed. Continuous form paper is advanced using a tractor feed mechanism. There are three ways to advance the paper with tractor feed: using the push tractor, using the tractor, and using the push and pull tractors together. Any...

Page 180 - Push Tractor Method; push tractor operation.

REV.-B Push Tractor Method When the push tractor is selected, the SPUR GEAR, 16 engages the SPUR GEAR, 17 (Tractor gear) on the TRACTOR ASSY. COMBINATION GEAR, 8.5, 30 is driven by the paper-feed gear, which in turn is driven by the paper-feed motor pinion gear. The paper-feed pinion gear, when turn...

Page 182 - GUIDE; . 1 . 3 . 2 P a p e r I n s e r t i o n E n t r a n c e s; the top entrance, the rear; Paper; Feed; Roller

REV.-B The LEVER, RELEASE switches between friction feed and tractor feed. Setting the LEVER, RELEASE to the friction feed position presses the paper advance roller against the PLATEN. Setting the release lever to the tractor feed position releases this pressure, so that the paper advance roller sep...

Page 183 - Rear entrance paper insertion; PAPER GUIDE; Printhead; Figure 2-10. Paper Path for Rear Entrance Push Tractor Feed; Figure 2-l 1. Paper Path for Rear Entrance Push-Pull Tractor Feed

REV.-B Rear entrance paper insertion When you feed paper into the printer through the rear entrance, the method to advance the paper can be: the push tractor, or the push-pull tractor. The rear paper-out detector senses when the paper- has run out. Paper (Continuous) \ ROLLER ASSY., PAPER EJECT PAPE...

Page 184 - Bottom entrance paper insertion; When you feed paper into the printer through the bottom entrance,; Paper Feed Roller

REV.-B Bottom entrance paper insertion When you feed paper into the printer through the bottom entrance, the pull tractor advances the paper. The front paper-out detector senses when the paper runs out. Paper (Continuous TRACTOR ASSY. DETECTOR ASSY., PE, FRONT Paper Feed Roller From Bottom Insertion...

Page 186 - . 1 . 4 R i b b o n A d v a n c e M e c h a n i s m; Direction

REV.-B 2 . 1 . 4 R i b b o n A d v a n c e M e c h a n i s m The ribbon drive gear advances the ribbon through a gear linkage. This arrangement of gears makes the ribbon drive gear always rotate in a counterclockwise direction, regardless of the direction the carriage is moving. Table 2-2. Ribbon Ad...

Page 187 - Boards; CO62 MAIN board logic circuitry; . 2 . 2 S u p p l y C i r c u i t O p e r a t i o n

REV.-B 2.2 POWER SUPPLY OPERATION The printer can be powered by either of two power supply boards: the 120 V CO62 PSB board or the 2201240 V CO62 PSE board. The only difference in the way these two boards operate is in the primary circuitry. How they work to supply power to the printer is identical....

Page 188 - Figure 2-16. Power Supply Circuit Block Diagram

REV.-A Second, there are four circuits to protect the supply circuitry and avoid danger. The VDC line contains a current overload protection circuit and a voltage overload protection circuit. The current overload protection circuit is part of the VDC supply circuit. It cuts the VDC line if the curre...

Page 189 - . 3 . 1 C o n t r o l C i r c u i t O p e r a t i o n O v e r v i e w; CO62 PNL Board; Figure 2-17. Control Circuit Block Diagram

REV.-B 2.3 CONTROL CIRCUIT OPERATION The control circuit consists of two boards: the C062 MAIN board, which acts as the main board, and the C062 PNL board, which acts as the control panel board. This section describes how these boards w o r k . 2 . 3 . 1 C o n t r o l C i r c u i t O p e r a t i o n...

Page 190 - drive; Table 2-5. Functions of the Main IC and Circuits; IC or Circuit; Location

REV.-B Table 2-5 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded to RAM. Each line of data is processed sequentially. The CPU transfers the print data to...

Page 192 - to P55 on the CPU; Figure 2-21. Sensor Circuit Block Diagram

REV.-A Power On C P U S e l f R e s e t V Line VCCON DISC THLD RESET Figure RESET Signal Timing 2.3.3 Sensor Circuits Figure 2-21 shows the sensor circuits in block diagram form. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, s...

Page 194 - I 2 . 3 . 5 M O T O R , P F D r i v e C i r c u i t; The printer uses a stepping; motor to advance the paper. The minimum amount of paper that can be

REV.-B I 2 . 3 . 5 M O T O R , P F D r i v e C i r c u i t The printer uses a stepping motor to advance the paper. The minimum amount of paper that can be advanced is inch. The motor is a 2-2 phase or l-2 phase, constant-voltage drive type. to P73 on the CPU are the control ports for the stepping mo...

Page 195 - expanded to create the image data. The CPU splits; this data three times and transfers this information

REV.-A 2.3.6 Printhead Drive Circuit Figure 2-24 shows the printhead drive circuit in block diagram form. The print data already has been expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the STK-6022B’. The CPU samp...

Page 196 - . 3 . 7 P a r a l l e l I n t e r f a c e C i r c u i t; c o m p u t e r i s l a t c h e d w i t h i n; C o n t r o l C i r c u i t; parallel data received

REV.-A 2 . 3 . 7 P a r a l l e l I n t e r f a c e C i r c u i t Figure 2-26 shows the parallel interface circuit in block diagram form. The data sent from the host c o m p u t e r i s l a t c h e d w i t h i n b y t h e S T R O B E s i g n a l . o u t p u t s t h e B U S Y s i g n a l automatically...

Page 197 - . 2 . 5 . 6 R e m o v i n g a n d D i s a s s e m b l i n g

REV.-B CHAPTER 3 DISASSEMBLY AND ASSEMBLY 3 . 1 O V E R V I E W ................................................................................................ 3-1 3.1.1 Precautions for Disassembling t h e Printer.. .................... 3-1 3 . 1 . 2 T o o l s .........................................

Page 198 - Removing the Printer Cover and

REV.-B LIST OF FIGURES Figure 3-1. F l o w c h a r t f o r Disassembling t h e Printer . . . . . . . . . . . . . . . . . . . . . . 3 - 4 Figure 3.2. Removing the Printer Cover and t h e Paper Eject Cover .......................................................... 3-5 Figure 3.3. Removing t h e Printh...

Page 199 - . 1 O V E R V I E W; W A R N I N G; switch for; Tool; Phillips screwdriver No. 2; NOTE

REV.-A 3 . 1 O V E R V I E W This section describes the various points to note when disassembling and assembling the printer. 3.1.1 Precautions for Disassembling the Printer Follow the precautions below when disassembling the printer. W A R N I N G Before disassembling, assembling, or adjusting the ...

Page 202 - . 2 D I S A S S E M B L Y A N D A S S E M B L Y; C A U T I O N; Disassembly; Figure 3-1. Flowchart for Disassembling the Printer

REV.-A 3 . 2 D I S A S S E M B L Y A N D A S S E M B L Y This section describes the procedures for disassembling and assembling the main components of the printer. When the procedure for installing a component into the printer is simply the reverse of the procedure for removing the component, no des...

Page 203 - Figure

REV.-B 3.2.1 Changing the Printhead 1. Remove the FRAME ASSY., SHEET GUIDE. 2. Remove the COVER ASSY., EJECT. FRAME ASSY., SHEET GUIDE COVER ASSY., EJECT (This illustration shows the LQ-570, an printer. The difference between the LQ-570 and LQ-1070 is in carriage width only.) Figure 3-2. Removing th...

Page 204 - t h e; P r i n t e r; C a s e; illustration shows

REV.-B 3 . 2 . 2 R e m o v i n g t h e P r i n t e r C a s e This section describes how to remove the front case and HOUSING ASSY., UPPER. 3.2.2.1 Removing the HOUSING, FRONT 1. Remove the COVER ASSY., PRINTER, FRONT. 2. Remove the HOUSING, FRONT. 3. Use a screwdriver to release the clips that hold ...

Page 205 - CB

REV.-B 3.2.3 Removing the Circuit Boards This section describes how to remove the BOARD ASSY., MAIN (CO62 MAIN board), the BOARD ASSY., POWER SUPPLY (CO62 PSB/PSE board) and the BOARD ASSY., PANEL (CO62 PNL board). 3.2.3.1 Removing the BOARD ASSY., MAIN (C062 MAIN Board) 1. Remove the HOUSING ASSY.,...

Page 206 - Remove the cable for connector; WIRE

REV.-B After replacing the BOARD ASSY., MAIN, you must adjust the bidirectional print position again to ensure bidirectional printing is correctly aligned (see Section 4.2). 3.2.3.2 Removing the BOARD ASSY., POWER SUPPLY (C062 PSB/PSE Board) 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). ...

Page 207 - Figure 3-10. Removing the PRINTER MECHANISM

REV.-B 3.2.4 Removing the PRINTER MECHANISM 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). 2. Remove the CB screws that attach the HOLDING PLATE., FFC to the SHIELD PLATE, MAIN BOARD. Remove the HOLDING PLATE,FFC. 3. Disconnect the 2 HEAD, FRONT(,REAR)) from the CN6 and CN7 connectors on ...

Page 208 - . 2 . 5 D i s a s s e m b l i n g t h e P R I N T E R M E C H A N I S M; Remove the TIMING BELT from the BELT PULLEY.; EXTENSION SPRING, 778; Points to Note for Assembly and Adjustment; You also must adjust the bidirectional print position to ensure

REV.-B 3 . 2 . 5 D i s a s s e m b l i n g t h e P R I N T E R M E C H A N I S M This section describes how to disassemble the main components of the PRINTER MECHANISM. 3.2.5.1 Removing the MOTOR, CR 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the pri...

Page 209 - Remove the COMPRESSION SPRING, 200 that holds the platen shaft.; sure that the FFC is free.

REV.-B 3.2.5.2 Removing the MOTOR, PF 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the COMPRESSION SPRING, 200 that holds the platen shaft. 3. Release the two clips holding the MOTOR, PF to the FRAME, MAIN, RIGHT. 4. Remove the MOTOR, PF from the FRAME...

Page 210 - Remove the TIMING BELT from the carriage.; Adjusting; Bushing

REV.-B 3.2.5.4 Removing the Carriage 1. Remove the FFC (CABLE, HEAD, FRONT (,REAR)) (see Section 3.2.5.3). 2. Remove the TIMING BELT from the carriage. 3. Use the box driver to rotate and free the adjusting bushing. This bushing holds the SHAFT, CR, GUIDE to the FRAME, MAIN, RIGHT. Remove the bushin...

Page 211 - Remove; hold the LEVER, RELEASE; S P R I N G; When inserting the LEVER, RELEASE

REV.-B 3.2.5.5 Removing the PLATEN 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the two 10) screws that hold the COVER, PLATEN, LOWER to the left and FRAME, MAIN, RIGHT. Remove the COVER, PLATEN, LOWER. 3. Remove the COMPRESSION SPRING, 200 that holds ...

Page 212 - Section; COMPRESSION SPRING, 200; PF; PLAIN WASHER

REV.-B 3.2.5.6 Removing and Disassembling the FRAME, MAIN, RIGHT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the MOTOR, CR from the FRAME, MAIN, BASE (see Section 3.2.5.1). 4. Remo...

Page 213 - SUPPORT

REV.-B 3.2.5.7 Removing and Disassembling the PAPER GUIDE (Including the DETECTOR ASSY., HP) 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the FRAME, MAIN, RIGHT from the FRAME, MAIN...

Page 214 - Insert the SHAFT, RELEASE in the PAPER GUIDE in the; way shown in

REV.-B While holding down the three PF lever assemblies, pull out and remove the release shaft. Remove the PF lever assemblies and the compression spring (1300 gm) from the paper guide. 10. While holding open the clips that secure the DETECTOR ASSY., RELEASE to the PAPER GUIDE, remove the DETECTOR A...

Page 215 - DETECTOR

REV.-B 3.2.5.8 Removing the DETECTOR ASSY., HP 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the clips from the rear side of the FRAME, MAIN, BASE that hold the DETECTOR ASSY., HP. Remove the DETECTOR ASSY., HP from the rear of the FRAME, MAIN, BASE. Fi...

Page 216 - Frame

REV.-B 3.2.5.10 Removing the DETECTOR ASSY., PE, FRONT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Open the clips that hold the DETECTOR ASSY., PE, FRONT to the FRAME, MAIN, BASE. Remove the DETECTOR ASSY., PE, FRONT. DETECTOR ASSY., PE, FRONT FRAME, MAIN, ‘...

Page 217 - TRACTOR ASSEMBLY; ER SUPPORT

REV.-B 3.2.5.12 Disassembling the TRACTOR ASSY. 1. Remove the TRACTOR ASSY. from the printer. 2. Remove the SPUR GEAR, 17 from the SHAFT, TRACTOR. 3. Remove the FRAME, TRACTOR, RIGHT from the SHAFT, TRACTOR and the SHAFT, TRACTOR, GUIDE. 4. Remove RETAINING RING from the SHAFT, TRACTOR. 5. Remove th...

Page 218 - Figure 3-28 shows how the cables are; arranged; for the PRINTER MECHANISM. When assembling the

REV.-B 3.2.5.13 Arranging the Cables Figure 3-28 shows how the cables are arranged for the PRINTER MECHANISM. When assembling the printer, make sure that the cables are laid out as shown in this figure. PRINTER MECHANISM (Bottom) (This illustration shows the LQ-570, an printer.) Figure 3-28. Arrangi...

Page 220 - . 1 A D J U S T I N G T H E P R I N T E R M E C H A N I S M

REV.-B 4 . 1 A D J U S T I N G T H E P R I N T E R M E C H A N I S M This section describes the various adjustments you may need to make to the PRINTER MECHANISM. 4.1.1 MOTOR, CR Backlash Adjustment In the MOTOR, CR backlash adjustment, the pinion gear of the MOTOR, CR is meshed smoothly with the BE...

Page 222 - mm thickness but too narrow for one of 0.47 mm thickness.

REV.-B 9. Rotate the adjusting bushing until the platen gap is large enough for a thickness gauge of 0.44 mm thickness but too narrow for one of 0.47 mm thickness. 0 . 4 5 m m PLATEN Printhead Figure 4-4. Platen Gap 10. Move the carriage until the edge of the printhead is at the 75th column print po...

Page 223 - . 2 B I D I R E C T I O N A L P R I N T P O S I T I O N A D J U S T M E N T

REV.-B 4 . 2 B I D I R E C T I O N A L P R I N T P O S I T I O N A D J U S T M E N T This section describes how to adjust the bidirectional print position to ensure correct printing alignment. 4.2.1 Overview of Bidirectional Print Position Adjustment This printer prints characters when the carriage ...

Page 225 - . 3 C I R C U I T A D J U S T M E N T; again by adjusting this variable resistance:

REV.-B 4 . 3 C I R C U I T A D J U S T M E N T The BOARD ASSY., MAIN (C062 MAIN BOARD) contains variable resistor VR1, which is used for balancing the circuitry. When any of the following parts are replaced, the circuitry must be balanced again by adjusting this variable resistance: R14, R15, R13, C...

Page 226 - Repair of a Problem in the BOARD ASSY., MAIN

REV.-B 5.1 O V E R V I E W ................................................................................................ 5-1 5 . 2 REPAIR B Y U N I T REPLACEMENT.. .................................................. 5-2 5 . 3 REPAIR OF THE BOARD ASSY., MAIN 5 . 4 ( C 0 6 2 M A I N B O A R D ) .......

Page 227 - Table 5-1. Motor and Printhead Coil Resistance

REV.-B 5 . 1 O V E R V I E W P r o b l e m s i n t h e p r i n t e r m a y e x h i b i t a v a r i e t y o f s y m p t o m s , w h i c h c a n c o m p l i c a t e t h e t a s k o f troubleshooting, unless you follow the procedure shown in the flowchart below. Repair of the I Repair of the printer BO...

Page 236 - : Perform bidirectional print alignment adjustment.

REV.-A C h e c k m o t o r r e s i s t a n c e . N o C h e c k d r i v e r s . Yes R e p l a c e l o g i c P C B . NOTE R e p l a c e d e f e c t i v e R e p l a c e m o t o r a n dm a i n l o g i c b o a r d . N o m o t o r r e s i s t a n c e . NOTE P e r f o r m f i n a l t e s t . N o R e p l a ...

Page 237 - Check

REV.-B C l e a n o r r e p l a c e . Check and right tractor assemblies for proper phasing. Adjust phasin I n s p e c t p a p e r p a t h . Perform final test. 5 - 1 1

Page 240 - be bad. Check these values and take the appropriate action.

REV.-B 5.3 REPAIR OF THE MAIN BOARD This section provides instructions for repairing the BOARD ASSY., MAIN when it is defective and describes various symptoms, likely causes, and checkpoints. Checkpoints refer to proper waveforms, resistance values, and other values to be checked to evaluate the ope...

Page 243 - Disassembly and Assembly,; Table 5-5. Repair of the PRINTER MECHANISM

REV.-B 5.4 REPAIR OF THE PRINTER MECHANISM For detailed procedures for replacing or adjusting parts, refer to Chapter Disassembly and Assembly, and Chapter 4, Adjustment. If a problem or symptom recurs following an attempted repair, refer to Table 5-5 to try to find other potential causes. The MOTOR...

Page 247 - . 1 P R E V E N T I V E M A I N T E N A N C E; . 2 L U B R I C A T I O N A N D A D H E S I V E A P P L I C A T I O N; Oil

REV.-B 6 . 1 P R E V E N T I V E M A I N T E N A N C E Preventive maintenance includes regular cleaning of the case exterior (using denatured alcohol), as well as occasional vacuuming of the mechanism’s interior to remove dust and paper debris. After cleaning the unit, check that it is adequately lu...

Page 248 - Lubrication must be applied during the reassembly process.

REV.-A Table 6-2. Lubrication Points (Refer to Figure 6-2) of the perimeter of the top edge of the gear (8.5 mm, 30 mm) 2 of the perimeter of the top edge of the gear (40 mm) 3 of the perimeter of the top edge of the platen gear 4 Portion of carriage that contacts base frame 5 Oil pad 6 Portion of p...

Page 253 - A . 1 C O N N E C T O R S U M M A R Y; B O A R D A S S Y , M A I N ( C O 6 2 M A I N B O A R D )

REV.-B A . 1 C O N N E C T O R S U M M A R Y F i g u r e A - l i l l u s t r a t e s t h e i n t e r c o n n e c t i o n o f t h e p r i m a r y c o m p o n e n t s . T a b l e A - l s u m m a r i z e s t h e functions and sizes of the connectors. B O A R D A S S Y , M A I N ( C O 6 2 M A I N B O A ...

Page 276 - Appendix B; Weight Difference for Cut Sheet Carbonless; Figures

Appendix B The LQ-570+/1070+ Differences between the LQ-570+/1070+ and the LQ-570/1070 . . B-1 Important Component Differences . . . . . . . . . . . . . . . . . B-1 Faster Print Speeds. . . . . . . . . . . . . . . . . . . . . . . . . . B-1 Faster Bit Image Print Speeds . . . . . . . . . . . . . . . ...

Page 277 - Tables

Appendix B Tables Table B-1 Component Compatibility . . . . . . . . . . . . . . . . . B-1 Table B-2. Print Speed Comparison . . . . . . . . . . . . . . . . . . B-1 Table B-3. Bit Image Print Speed Comparison. . . . . . . . . . . . B-2 Table B-4. DIP Switch SW1 Differences . . . . . . . . . . . . . ....

Page 278 - low-cost printer with; Important Component Differences

Appendix B. The LQ-570+/1070+ This appendix describes the LQ-570+/1070+ printer, a small, low-cost printer with advanced paper-handling features that is compatible with the LQ-570 and LQ-1070. Differences between the LQ-570+/1070+ and LQ-570/1070 Important Component Differences LQ-570+/1 B-l. Compon...

Page 279 - Friction without CSF; Additional Scalable Fonts

Appendix B Faster Bit Image Print Speeds B-3. Bit Image Print Speed Comparison Bit Image Density Printable LQ-57011 070 Pins Printing Mode Dots 8 Single-density 6 0 480 22.5 .o 8 Dual-density 1 2 0 9 6 0 11.2 10.5 8 Double-speed, dual-density 1 2 0 9 6 0 22.5 21 .o 8 density 2 4 0 1920 11.2 10.5 8 C...

Page 280 - Character Table Differences; SW1 Differences

Appendix B Character Table Differences BRASCII and Abicomp added to LQ-570+/1070+ Table B-4. SW1 Differences SW Description ON OFF 1 lnternational character (See character set selection table 2 set and PC table selection below.) LQ-570+/1 Factory Setting O N O NO N 4 Character table Graphic Italic O...

Page 281 - When jumper

Appendix B Jumper Differences LQ-570+/1070+ When jumper is connected to SLIN, the printer recognizes the SELECT IN signal the host. LQ-570/1070 When jumper is connected to GND, the SLCT-IN signal is fixed to LOW. Printer Weight Difference LQ-570+/1070+ LQ-570/1070 15 lb. (6.8 lb. (9.5 kg) 13.5 lb. (...

Page 282 - C107 MAIN Board Component Layout; MAIN Board Component Layout

Appendix B C107 MAIN Board Component Layout S T K 6 7 1 2 CPU (IC21) MASK ROM (IC PROM (IC14) (IC2) Figure B-l. MAIN Board Component Layout Note: The LQ-570+ and the LQ-1070+ use versions of the Cl07 MAIN board. The differences between the boards are shown in the table below. Table B-7. in the Cl07 ...

Page 283 - Figure B-2. Control Circuit Block Diagram

Appendix B LQ-570+/1070+ Control Circuit Operation The control circuitry consists of two boards: the Cl07 MAIN board and the CO62 PNL board (the control panel). The printer’s CPU is an CPU running at 10 MHz. It oversees control of all the components of the printer. The gate array contains various me...

Page 284 - outputs the head drive signal.; R A M

Appendix B Table B-8 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded into RAM. Each line of data is processed sequentially. The CPU transfers the print d...

Page 286 - Reset Circuit; When Turning on the Power Supply; l l

Appendix B Reset Circuit Figure B-4 shows a block diagram for the reset circuit, which issues the /BESET signal to initialize each part of the control circuit as it receives this signal. The conditions when the /RESET signal is output are described below. When Turning on the Power Supply Immediately...

Page 288 - Sensor Circuits; Other signals, such as the

Appendix B Sensor Circuits Figure B-6 shows a block diagram for the sensor circuits. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the signal, pass through each low pass filter before reaching the CPU. Terminals to P55...

Page 289 - CR Motor Drive Circuit; inch. For each single step phase change of a 1-2; Drive Mode

Appendix B CR Motor Drive Circuit Figure B-7 shows the CR motor drive circuit, which uses an open-loop, current drive control to drive the CR motor. The motor is driven with 2-2 phase excitation and 1-2 phase excitation. The 2-2 phase excitation corresponds to two 1-2 phase excitation steps, so for ...

Page 290 - PF Motor Drive Circuit

B PF Motor Drive Circuit The stepping motor that the printer uses to advance the paper can advance it by a minimum of inch. The motor is a 2-2 phase or phase, constant-voltage drive type. to P73 on the CPU are the phase control ports for the stepping motor. PF motor phase data is output through thes...

Page 291 - Printhead Drive Circuit; Drive Circuit

Appendix Printhead Drive Circuit Figure B-9 shows the printhead drive circuit block diagram. The print data already is expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the head gate array The CPU samples the voltage...

Page 292 - Manual; Removing the Cl07 MAIN Board Assembly; the Main Board Shield Plate; CAUTION

Appendix B Disassembly Procedures Unique to the LQ-570+/1070+ For the most part, disassembly of the LQ-570+/1070+ is the same as for the For the power supply and control panel, however, there a different number of screws to remove for the LQ-570+/1070+ than the LQ-570/1070. For your convenience, thi...

Page 293 - REQUIRED

Appendix B X 10) Screws CB (M3 X Main B-11. Main REQUIRED After you have replaced the main board assembly, you must adjust the bidirectional print alignment. See Section 4.2 in the LQ-570/1070 Service Manual. B-16 Epson LQ-570+/1

Page 294 - the C062 PSB Power Supply Board Assembly; Special Tool

B Removing the C062 PSB Power Supply Board Assembly 1. Remove the upper housing assembly. (See Section 3.2.2.2.) 2. Remove the cable from connector CN13 on the main board assembly. 3. Remove the cable from connector on the power supply board assembly. 4. Remove 5 x 10) screws and 1 CB x 8) screw tha...

Page 295 - Removing the C062 PNL Board; screws that hold the panel board assembly; the panel board assembly.; Figure B-13. Removing the Panel Board Assembly

Appendix B Removing the C062 PNL Board 1. Remove the front housing. (See Section 3.2.2.1.) 2. the 5 x screws that hold the panel board assembly the front housing. Remove the panel board assembly. Figure B-13. Removing the Panel Board Assembly B-18 Epson

Page 296 - Adjustments; Circuit Adjustment

B Adjustments The adjustments for the LQ-570+/1070+ are the same as those for the LQ-570/1070, with the exception of the circuit adjustment described in Section 4.3. This adjustment is not applicable to U.S. dealers, because the variable resistor is set correctly for the main board in the factory an...

Page 297 - Troubleshooting; The tables below provide the test points you

Appendix B Troubleshooting The tables below provide the test points you use to check the motors, printhead, and drivers for the LQ-570+/107&. Connector C N 6 C N 7 C N 6 (Thermistor) Table 6, 7, 6 3, 4, 5, 12, 16 and 17 1 0. Printhead Test Points Test Method (Power off. Set Meter to Ohms) Place ...

Page 298 - Error

Appendix B Driver Printhead Test Method Point 1 Point 2 (Power off. Set Meter to Diodes) Reading GND CN6 pins Disconnect the printhead connector. Consistent readings within 6, 10, Place the + lead on GND and the 20%. 13, lead on each of the test pins. CN7 pins 5, PF Motor GND CN5 pins , 4 Disconnect...

Page 299 - at

Appendix B The figure below shows how printhead connector pins are assigned to the dot wires in the printhead. 116 Figure B-14. Printhead Connector 0 0 0 0 0 1 9 0 0 0 a15 0 0 0 a21 0 Coil Resistance: 45.5 at (Between each dot wire and common.) B-22 Epson

Page 300 - Reference Materials; This section contains tables, diagrams, and schematics

B Reference Materials This section contains tables, diagrams, and schematics to the The figure below is a connection diagram for the Cl07 MAIN board and the printer mechanism (for the LQ-570+) or printer mechanism (for the LQ-1070+). I 4 4 4 4 4 4 4 G A P L E V E R C R H O M E P E - 2 P E - 1 H E A ...

Page 301 - Connector Summary

Appendix B Board Panel Board Assembly Control panel input to main board 12 Power Supply Board AC power input 2 Assembly C N 2 DC power input 1 1 Cl 07 MAIN Board Assembly L Table B-13. Connector CN2C N 3 C N 4 CN6C N 7 C N 1 2 C N 1 3 Connector Summary Function Parallel interface 3 6 Optional interf...

Page 302 - Board; Signal Name; VO

Pin No. Table B-14. Cl 07 Board Signal Name Function , 1 56 i 9 10 1 1 1 2 1 31 4 1 51 61 71 8 19 202 12 2 23 2 4 252627 2829 30 3 13233 34 35 3 6 00 0 0 000 0 0 00 VO vo VDC v VDC v VDC VDC VDC T X D Transmit data /READY Ready to receive data RXD Receive data N C Not connectedReset INH Inhibit Comm...

Page 305 - Table R21. Cl07 MAIN Board; VDC

Appendix B Pin No. Table R21. Cl07 MAIN Board Signal Name Function 1 I P E 2 Rear PE sensor 2 G N D Signal ground Pin No. R22. Cl07 MAIN Board Signal Name Function 1 I 2 G N D B-23. Cl07 MAIN Board Pin No. v o Signal Name Function 1 I GAP Platen gap sensor 2 G N D Signal ground B-24. Cl07 MAIN CN12 ...

Page 306 - Board Component Layout

Appendix B B-16. Cl07 Board Component Layout Epson LQ-570+/1 B-29

Page 307 - Figure B-l 7. Cl07 MAIN Board Circuit Diagram

Appendix B Figure B-l 7. Cl07 MAIN Board Circuit Diagram Epson B-31