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Impact Serial Dot Matrix Printer
EPSON LQ-2080
®
SEDM98002
Notice:
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. The contents of this manual are subject to change without notice. All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
General Notice:
Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks.
Copyright © 1996 SEIKO EPSON CORPORATION. Printed in Japan.
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.
DANGER
Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings. Signals a precaution which, if ignored, could result in damage to equipment.
WARNING
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES. 2. NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK. 3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE. 3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS. 4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTISTATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS. 5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
PREFACE
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON LQ-2080. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:
CHAPTER 1. CHAPTER 2. CHAPTER 3.
PRODUCT DESCRIPTIONS OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY
Provides a general overview and specifications of the product.
Describes the theory of electrical and mechanical operations of the product.
Describes the step-by-step procedures for disassembling and assembling the product.
CHAPTER 4. CHAPTER 5. CHAPTER 6.
ADJUSTMENTS TROUBLESHOOTING MAINTENANCE
Provides Epson-approved methods for adjustment.
Provides the step-by-step procedures for troubleshooting.
Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.
APPENDIX
Provides the following additional information for reference: · EEPROM Address Map · Connector Pin Assignments · C273 Main Board Component Layout · C273 Main Board Circuit Diagram
Revision Status
Revision A Issued Date March 08, 1999 Description First release
Revision A
Contents
Product Description
Specifications ................................................................................................. 8 Features ................................................................................................................ 8 Accessories .......................................................................................................... 8 Hardware Specifications ................................................................................. 9 Printing Method ..................................................................................................... 9 Printing Specifications ........................................................................................... 9 Paper Handling ...................................................................................................... 9 Paper Specifications ............................................................................................ 11 Ribbon Specificatio .............................................................................................. 11 Electrical Specifications ....................................................................................... 11 Environtal Conditions .......................................................................................... 11 Reliability ............................................................................................................. 11 Safety Approvals ................................................................................................. 12 CE Marking .......................................................................................................... 12 Physical Specifications ........................................................................................ 12 Firmware Specifications ............................................................................... 13 Control Codes and Fonts .................................................................................... 13 Interface Specifications ....................................................................................... 15 EEPROM Control Circuit ..................................................................................... 29 Sensor Circuits ................................................................................................... 30
Disassembly and Assembly Adjustment
Overview ...................................................................................................... 34 Pre-operation for the Adjustment Program ......................................................... 34 Bi-D Adjustment .................................................................................................. 36 TPE Level Reset ................................................................................................. 37 Writing the User-characteristic Data ................................................................... 38
Troubleshooting
Overview ...................................................................................................... 41 Troubleshooting Information ........................................................................ 41 Printhead ............................................................................................................. 41 Sensors ............................................................................................................... 41 Motors ................................................................................................................. 41 The Error codes with Indicators and Buzzer ....................................................... 41 Unit Level Troubleshooting ........................................................................... 42 Repairing the C166 PSB/PSE Board .............................................................. 42 Repairing the C273 Main Board ..................................................................... 42 Repairing the Printer Mechanism .................................................................. 44
Parallel Interface (Forward Channel) .................................................. 15 Parallel Interface (Reverse Channel) ................................................. 15 Operation Instruction .................................................................................... 16
Errors ................................................................................................................... 17 EEPROM Initialization ......................................................................................... 18 Main Components ......................................................................................... 19 C273 Main Board ................................................................................................ 20
Maintenance Operating Principles
Printer Mechanism Operations ...................................................................... 22 Power Supply Operation ............................................................................... 22 Control Circuit .............................................................................................. 23 Overview of Control Circuit Operation ................................................................. 23 System Reset Circuit ........................................................................................... 25 Printhead Driver Circuit ....................................................................................... 26 CR Motor Driver Circuit ....................................................................................... 27 PF Motor Driver Circuit ....................................................................................... 29
Appendix
EEPROM Address Map ................................................................................. Connector Summary ..................................................................................... Component Layout ....................................................................................... Circuit Diagram ............................................................................................
48 51 52 54
6
PRODUCT DESCRIPTION
LQ-2080
Revision A
1.1 Specifications
The LQ-2080 is the revised model of the already existing LQ-2070. Since the specifications for the both products are mostly common, the information included in this section is limited to the items that are specific to LQ-2080. For the rest of the information, refer to the LQ-2070 Service Manual.
1.1.2 Accessories
Table 1-1. Items Included with the Printer
Enclosed Items User's manual Driver diskette Ribbon cartridge Quantity 1 1 1 1
1.1.1 Features
Power supply cable (230 V Version)
Print speed:
High speed draft: 400 cps Draft: 300 cps LQ: 100 cps at 10 cpi Standard version: 13 tables NLSP version: 38 tables 0 Kbyte or 64 Kbyte (depend on the default setting) 50 dB (A) (ISO 7779 pattern) MVBF *: MTBF: 19 million lines (except printhead) 10,000 power on hours (POH)
Table 1-2. Consumables and Optional Units
Unit Ribbon cartridge Ribbon pack High-capacity cut sheet feeder (bin 1) Second bin cut sheet feeder (bin 2) Pull tractor unit Roll paper holder Serial I/F card 32KB intelligent serial I/F card 32KB intelligent parallel I/F card Local Talk I/F card 32KB IEEE-488 I/F card S015086 S010033 C80673* C80674* C80032* #8310 C82305* / C82306* C82307* / C82308* C82310* / C82311* C82312* C82313* C82314* C82315* C82345* C82357*, C82362*, C82363**2, C82364* Description*1
Character tables: Input data buffer: Acoustic noise: Reliability:
Control codes: Copy capability:
ESC/P2 and IBM 2391 Plus emulation 1 original + 4 copies
Control panel functions: Font, Pause, Condensed Pause, Tear off, Bin, LF/FF, Load/Eject, Micro Adjust, Self-Test, Data Dump, and the Default Setting
Coax I/F card Twinax I/F card IEEE-1284 parallel I/F card Ethernet I/F card
* : Mean print volume between failure (MTBF 25% duty cycle)
*1: The number represented by an asterisk varies, depending on the country. *2: When you use Ethernet interface card (C82363*), you need to attach the optional interface card adapter (C82525*) to the interface card.
Product Description
Specifications
8
LQ-2080
Revision A NOTE:
1. When the power supply voltage drops to the lower limit, the printer stops printing and then starts printing on that line again more slowly than before. 2. When the head temperature rises to the upper limit, the printer stops printing. When the head temperature falls to the normal level, the printer start printing again more slowly than before.
1.2 Hardware Specifications
This section also contains information specific to the LQ-2080. For other information, refer to the LQ-2070 Service Manual.
1.2.1 Printing Method
See the LQ-2070 Service Manual.
1.2.3 Paper Handling
1.2.2 Printing Specifications
Copy capability:
1 original + 4 copies
Print speed and printable columns Table 1-3. Print Speed and Printable Columns
Print Mode High-speed draft Character Pitch 10 cpi 10 cpi Draft 12 cpi 15 cpi Draft Condensed 17 cpi 20 cpi 10 cpi LQ 12 cpi 15 cpi 17 cpi LQ Condensed 20 cpi 272 200 133 Printable Columns 136 136 163 204 233 272 136 163 204 233 Print Speed (cps) Normal 400 300 360 450 257 300 100 120 150 171 Copy 266 200 240 300 171 200 66 80 100 114
Friction feed (front, rear) Push tractor feed (front lever) Push & Pull tractor feed (front, rear) Pull tractor feed (front, rear, bottom)
Feed speed
Normal mode:
1/6 inch feed : 45 msec Continuous feed : 0.127 MPS (m/second) 5.0 IPS (inchs /second) 1/6 inch feed : 66 msec Continuous feed : 0.092 MPS (m/second) 3.6 IPS (inches/second)
Copy mode:
Product Description
Hardware Specifications
9
LQ-2080
Revision A
See the following table.
Release lever:
Paper thickness lever:
See the following table.
Table 1-4. Release Lever Settings
Lever Position Paper path / Feeder Manual insertion (front) Manual insertion (rear) Friction CSF Bin 1 CSF Bin 2 Roll paper holder Push tractor feed (front) Front tractor Push & Pull tractor feed (front) Push tractor feed (rear) Rear tractor Push & Pull tractor feed (rear) Pull tractor feed (front) Full release Pull tractor feed (rear) Pull tractor feed (bottom) Continuous paper (Single sheet & Multi part) Continuous paper (Single sheet & Multi part), Continuous paper with labels Continuous paper (Single sheet & Multi part) Continuous paper (Single sheet & Multi part), Continuous paper with labels Continuous paper (Single sheet & Multi part), Continuous paper with labels Continuous paper (Single sheet & Multi part) Paper / Media Cut sheet (Single sheet & Multi part), Card Cut sheet (Single sheet & Multi part), Card, Envelope Cut sheet (Single sheet & Multi part), Card, Envelops Cut sheet (Single sheet) Roll paper Continuous paper (Single sheet & Multi part), Continuous paper with labels Setting Position 0 1 2 3 4 5 6
Table 1-5. Adjust Lever Setting Position
Paper Thickness (inch) Paper Thickness (mm) Minimum 0.0024 0.0047 0.0074 0.0102 0.0126 0.0141 0.0157 Maximum 0.0047 0.0074 0.0102 0.0126 0.0141 0.0157 0.0173 over 0.06 up to 0.12 over 0.12 up to 0.19 over 0.19 up to 0.26 over 0.26 up to 0.32 over 0.32 up to 0.36 over 0.36 up to 0.40 over 0.40 up to 0.44
Product Description
Hardware Specifications
10
LQ-2080
Revision A
1.2.4 Paper Specifications
1.2.6 Electrical Specifications
Cut Sheet (Single sheet, Multipart)
Front Entry 3.9 inch 100 mm Rear Entry 3.9 inch 100 mm
120 V Version
Width
Input voltage range: AC 99 to 132 V Rated current: 1.0 A (max. 3.2 A)
Card
Front Entry 3.9 inch 100 mm 5.8 inch 148 mm 7.8 inch 200 mm 7.8 inch 200 mm Rear Entry 3.9 inch 100 mm 3.9 inch 100 mm 7.8 inch 200 mm 7.8 inch 200 mm
Power consumption: Approximately 35 W (ISO/IEC10561 Letter pattern) Energy Star Compliant
230 V version Rated current: 0.5 A (max. 1.6 A)
Width
Power consumption: Approximately 37 W (ISO/IEC10561 Letter pattern) Energy Star Compliant
Length
1.2.7 Environtal Conditions
See the LQ-2070 Service Manual.
1.2.5 Ribbon Specificatio
Ribbon life:
Approximately 8 million characters (LQ 10 cpi, 48 dots / character)
1.2.8 Reliability
MVBF *: MTBF: Printhead life:
19 million lines (except printhead) 10000 POH 200 million strokes/wire
*: Mean print volume between failure
Product Description
Hardware Specifications
11
LQ-2080
Revision A
1.2.9 Safety Approvals
1.2.11 Physical Specifications
120 V version
Safety standards: EMI:
UL1950, CSA C22.2 No. 950 FCC part15 subpart B class B CSA C108.8 class B
Without options: - Dimensions: 639 mm(W) x 402 mm(D) x 268 mm(H) - Weight: Approximately 13 kg Including CSF bin 1 - Dimensions: 639 mm(W) x 469 mm(D) x 380 mm(H) - Weight: Approximately 16.3 kg Including CSF bin 1 & bin 2 - Dimensions: 639 mm(W) x 598 mm(D) x 411 mm(H) - Weight: Approximately 17.2 kg
230 V version Safety standards: EMI: EN60950 (TUV) EN55022 (CISPR pub.22) class B AS/NZS 3548 class B
1.2.10 CE Marking
230 V version
Low voltage directive 73/23/EEC:EN60950 EMC Directive 89/336/EEC: EN55022 class B EN61000-3-2 EN61000-3-3 EN50082-1 IEC801-2 IEC801-3 IEC801-4
Acoustic noise:
Approximately 50 db(A) (ISO 7779 pattern)
Product Description
Hardware Specifications
12
LQ-2080
Revision A
International character set (14 countries and legal) U.S.A. U.K. Italy Norway Latin America France Denmark 1 Spain 1 Denmark 2 Korea Germany Sweden Japan Spain 2 Legal
1.3 Firmware Specifications
This section describes the firmware specifications for the LQ-2080.
1.3.1 Control Codes and Fonts
Control codes: Character tables:
ESC/P2 and IBM 2391 Plus Emulation
Standard version (13 character tables) Italic table PC 860 (Portuguese) PC 850 (Multilingual) PC 437 (US, Standard Europe) PC 861 (Icelandic) PC 863 (Canadian-French) PC 865 (Nordic) Abicomp BRASCII Roman 8 ISO Latin 1 PC 858 ISO 8859-15 NLSP version (38 character tables) Italic table PC437 (US, Standard Europe) PC437 Greek PC850 (Multilingual) PC852 (East Europe) PC853 (Turkish) PC855 (Cyrillic) PC857 (Turkish) PC864 (Arabic) PC866 (Russian) PC869(Greek) MAZOWIA (Poland)Code MJK (CSFR) ISO 8859-7 (Latin/Greek) lSO Latin 1T (Turkish) Bulgaria (Bulgarian) PC774 (LST 1283:1993) Estonia (Estonia) ISO 8859-2 PC866 LAT. (Latvian) PC866 UKR (Ukraina)PC860 (Portuguese) PC861 (Icelandic) PC865 (Nordic) PC APTEC(Arabic) PC708 (Arabic) PC720 (Arabic) PCAR864 (Arabic) PC863 (Canadian-French) Abicomp BRASCII Roman 8 ISO Latin 1 Hebrew7* Hebrew8* PC862 (Hebrew)* PC 858 lSO 8859-15
* The international and legal characters are these 12 codes: 23H, 24H, 40H, 5BH, 5CH, 5DH, 5EH, 60H, 7BH, 7CH, 7DH, 7EH
Typeface Bit map fonts EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script EPSON OCR-B EPSON Orator EPSON Orator-S EPSON Script C Scalable fonts EPSON Roman EPSON Sans Serif EPSON Roman T EPSON Sans Serif H Bar codes EAN-13, UPC-A Code 128 10 CPI, 12 CPI, 15CPI 10 CPI, 12 CPI, 15CPI, Proportional 10 CPI, 12 CPI, 15CPI, Proportional 10 CPI, 12 CPI, 15CPI 10 CPI, 12 CPI 10 CPI 10 CPI 10 CPI 10 CPI Proportional 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EAN-8 UPC-E POSTNET Interleaved 2 of 5 Code 39
* Not displayed in the Default setting mode.
Product Description
Firmware Specifications
13
LQ-2080
Revision A
Table 1-6. Character Tables and Available Typefaces
Character Tables Italic PC 850 (Multilingual)*1 PC 861 (Icelandic)*1 PC 863(Canadian-French)*1 Abicomp*1 Roman 8 PC 858 Italic table*1 PC 850 (Multilingual)*1 PC 861 (Icelandic)*1 PC 865(Nordic)*1 Abicomp*1 lSOLatin1 ISO 8859-15 PC 864 (Arabic) PC437Greek PC 853 (Turkish) PC 857 (Turkish) PC 869 (Greek) Code MJK (CSFR) lSO Latin 1T (Turkish) PC774 (LST 1283: 1993) 1SO 8859-2 PC 866 UKR (Ukraina) PC APTEC (Arabic) PC 720 (Arabic) Hebrew7*2 Hebrew 8*2 PC862 (Hebrew)*2 PC 852 (East Europe) PC 855 (Cyrillic) PC 866 (Russian) MAZOWIA (Poland) lSO 8859-7 (Latin/Greek) Bulgaria (Bulgarian) Estonia (Estonia) PC 866 LAT. (Latvian) table*1 PC 437 (US, Standard PC 860 (Portuguese)*1 PC 865 (Nordic)*1 BRASCII*1 ISO Latin 1 ISO 8859-15 Europe)*1 EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script EPSON OCR-B EPSON Orator EPSON Orator-S EPSON Script C Bit map font Scaleable font
Standard version
PC 437(US, Standard Europe)*1 PC 860(Portuguese)*1 PC863 (Canadian-French)*1 BRASCIl*1 Roman8 PC 858
EPSON Roman EPSON Sans Serif EPSON Roman T EPSON Sans Serif H
EPSON Draft EPSON Roman EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script EPSON Draft (Arabic) EPSON Roman EPSON Sans Serif
(Not supported)
NLSP version
(Not supported)
PC 708 (Arabic) PCAR864 (Arabic)
(Not supported)
EPSON Draft (Hebrew) EPSON Roman (Not supported) EPSON Courier
*1: ESC R command is effective on these character tables. *2: Not displayed in the default setting mode.
Product Description
Firmware Specifications
14
LQ-2080
Revision A
1.3.2 Interface Specifications
This section only provides information which is specific to the LQ-2080. For other information, refer to the LQ-2070 Service Manual.
1.3.2.2 Parallel Interface (Reverse Channel)
1.3.2.1 Parallel Interface (Forward Channel)
Transmission mode: Signal level: Pin assignment:
IEEE-1284 compatibility mode TTL compatible (IEEE-1284 level 1 device) The pin assignment (forward channel) is the same as for the LQ-2070 except for the function of the pin below:
Function
Transmission mode: Synchronization: Handshaking: Signal level:
8 bit parallel, IEEE-1284 nibble mode Refer to the IEEE-1284 specification. Refer to the IEEE-1284 specification. IEEE-1284 level 1 device
Data transmission timing: Refer to the IEEE-1284 specification. Device ID: [00H][4DH] MFG: EPSON; CMD: ESCPL2,PRPXL24,BDC; MDL: LQ-2080; CLS: PRINTER; DES: EPSON[SP]LQ-2080;
Pin No. 35
This line is pulled up to +5 V through 1.0 k resistor.
Pin assignment:
The pin assignment (reverse channel) is the same as for the LQ-2070 except for the functions of the pins below:
Function
Pin No. 18 35
This line is pulled up to +5 V through 3.9 k resistor. This line is pulled up to +5 V through 1.0 k resistor.
Product Description
Firmware Specifications
15
LQ-2080
Revision A
Table 1-8. Default Setting Menu
Item Setting / Value*1 3 inch, 3.5 inch, 4 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 8.5 inch, 11 inch, 70/6 inch, 12 inch, 14 inch, 17 inch On, Off On, Off On, Off Auto, Bi-d., Uni-d. Auto, Parallel, Optional 10 sec., 30 sec. ESC-P2, IBM 2391 Plus Standard version / NLSP version: See Section 1.2 for the character tables available. PC437 Italic U.S.A., Italic France, Italic Germany, Italic U.K., Italic Denmark 1, Italic Sweden, Italic Italy, Italic Spain 1 On, Off On, Off On, Off On, Off On, Off On, Off OCR-B, Orator, Orator-S, Script C, Roman T, Sans serif H On, Off Page length for front tractor Page length for rear tractor Skip over perforation Auto tear off Auto line feed Print direction I/F mode Auto I/F wait time
1.4 Operation Instruction
This section provides information on the LQ-2080 control panel buttons, LED, and operations. Since the layout and functions of the control panel are mostly common to those of LQ-2070, this section only provides the information that is specific to LQ-2080. For other information, see LQ2070 Service Manual.
Operations at power on Turning on the printer while pressing panel buttons executes the functions shown in the following table. Table 1-7. Operations at Power On
No. 1 2 3 4 5 6 7 8 Load / Eject Load / Eject LF / FF Condensed Load / Eject & LF / FF Font & Tear Off / Bin Tear Off / Bin & Load / Eject Pause The others LQ self test Draft self test Default setting (See the following table for the setting menu.) Data dump EEPROM clear Clear EEPROM for Driving Line count for ribbon change timing Bi-d adjustment Not available. Function
Software Character table
International character set for Italic table 0 slash High speed draft Input buffer Buzzer Auto CR (IBM 2391 Plus) A. G. M. (IBM 2391 Plus) Font *2 Roll paper
NOTE: Unlike the LQ-2070, the LQ-2080 doees not support the quiet mode.
*1: Setings with bold weight meas the standard factory settings. *2: One of the fonts selected in the default setting is corresponding to others (=other font) on the control panel. Following fonts are not selected in the default setting mode; Draft, Roman, Sans serif, Courier, Prestige, and Script
Product Description
Operation Instruction
16
LQ-2080
Revision A
Status code indicated by the LEDs Table 1-9. Status Code Indicated by the LEDs
Pause Pause Paper out error Paper eject warning Head hot warning Micro Adjust Tear off Bin selection Condensed selection Font selection Fatal error On On On Blink Blink --------Blink Paper Out --On Blink ------------Blink Tear Off / Bin ------------------Blink Condensed ------------------Blink Font ------------------Blink
1.4.1 Errors
Paper out: When printer fails to feed a sheet, it goes paper out error Release lever error: When release lever position is wrong, it goes release lever error. Fatal error: Carriage control error and Power supply voltage error
Buzzer Paper out error: Beeper sounds (...) * Release lever operation error: Beeper sounds (- - - - -)* Illegal panel operation: Beeper sounds (.)*
* The description (.) and (-) shows how the beeper sounds. (.): Beeper sounds approx.100 ms and interval is approx. 100 ms. (-): Beeper sounds approx.500 ms and interval is approx. 100 ms.
Product Description
Operation Instruction
17
LQ-2080
Revision A
1.4.2 EEPROM Initialization
Areas reset by EEPROM clear operation are as shown in the following tables: Table 1-10. Initialization Area for EEPROM (1/2)
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Item Character table selection Page length (rear tractor) Page length (front tractor) Page length (CSF Bin 1) Page length (CSF Bin 2) TOF adjustment value (rear tractor) TOF adjustment value (front tractor) TOF adjustment value (CSF Bin 1) TOF adjustment value (CSF Bin 2) TOF adjustment value (rear manual insertion) TOF adjustment value (front manual insertion) Bottom margin (rear tractor) Bottom margin (front tractor) Font selection Condensed Print direction setting I/F mode selection Auto I/F wait time setting Auto line feed Auto tear off PC437 11 inch 11 inch 22 inch 22 inch 8.5 mm 8.5 mm 8.5 mm 8.5 mm 8.5 mm 8.5 mm 11 inch 11 inch Roman Off Bi-D Auto 10 sec Off Off Factory setting
Table 1-11. Initialization Area for EERPOM (2/2)
No. 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Item Skip over perforation High speed draft Input buffer Software 0 slash Buzzer Roll paper Auto CR (IBM) A. G. M. (IBM) Tear-off adjustment value Other font selection Bin select Manual insertion wait time Tear-off wait time Copy mode Black paper mode Paper width measure TOF minimum value I/F timing data Paper edge length Page length (rear manual insertion) Page length (front manual insertion) Off On On ESC/P2 Off On Off Off Off 0 clear Roman T Friction Bin 1 or Tractor not Tear off 2 or 3 sec. 3 sec. Off Off On 4.2 mm BUSY 0 clear 22 inch 22 inch Factory setting
Product Description
Operation Instruction
18
LQ-2080
Revision A
1.5 Main Components
The main components for the LQ-2080 are as follows. They are designed for easy disassembly and repair work.
C273 Main Board C166 PSB/PSE Board C165 PNL Board Printer Mechanism Housing (upper and lower cases)
Figure 1-1. Main Components for LQ-2080
Product Description
Main Components
19
LQ-2080
Revision A
1.5.1 C273 Main Board
Table 1-12. Relationship between Program ROM and CG
Destination Program ROM(IC10) 8 M bit TDD21 CG ROM(IC6) Comments Standard Character is stored in the Program ROM. Standard Character is stored in the Program ROM.
C N 1 7 C N 3 C N 4 C N 5 C N 6
H e a d D r iv e T R A N S IS T O R
IC 1 2 A 2 9 1 7 S L A 7 0 2 4 M C N 1
IC 1 0 P -R O M IC 7 P -R O M (n o t m o u n te d )
Standard
None
C N 1 4 IC 3 G A T E A R R A Y E 0 5 B 4 2 C N 1 0 C N 1 6 C N 8 C N 7 C N 1 2 C N 9 C N 1 3 C N 2 IC 5 E E P R O M IC 1 C P U T M P 9 6 C 1 4 1 C N 1 1 C N 1 5
Europe
8 M bit TDD25
None
TAIWAN
4 M bit TDD27
32 M bit M320A19
A
Program ROM and CGROM are completely independent. Program ROM and CGROM are completely independent. Program ROM and CGROM are completely independent.
Korea
4 M bit TDD30
8 M bit M80C00
A A
China
4 M bit TDD29
16 M bit M160B11
IC 6 (C G -R O M ) IC 8 (P S -R A M )
NOTE: " " represents the version information.
Figure 1-2. C273 Main Board
Product Description
Main Components
20
OPERATING PRINCIPLES
LQ-2080
Revision A
2.1 Printer Mechanism Operations
See the LQ-2070 Service Manual.
2.2 Power Supply Operation
See the LQ-2070 Service Manual.
Operating Principles
Printer Mechanism Operations
22
LQ-2080
Revision A
2.3 Control Circuit
The control circuit consists of the C273 Main Board assembly and C165 PNL board This section describes the major components and explains how the boards work.
2.3.1 Overview of Control Circuit Operation
The printer's control circuit includes a TMP96C041BF CPU that runs at 19.66 MHz, an E05B24YB gate array, a 1M bit PS-RAM (8-bit bus, less than 100ns), a bit PROM (8-bit bus, less than 100ns), CG (Standard Version) or CG (NLSP Version). It oversees control of all the components in the printer. The following chart shows you a block diagram of the control circuit.
C N 1 ( P a r a lle l I/F ) C N 1 5 (P N L b o a rd ) D a ta IC 3 (E 0 5 B 4 2 ) IC 1 0 (P -R O M )* 1 IC 7 (n o t m o u n te d ) IC 6 (C G -R O M )* 1 IC 8 (1 M P S -R A M ) IC 4 (T M P 9 6 C ) IC 5 (A T 9 3 C 4 5 ) T r.(Q 4 -2 5 )
C N 8
C N 9
C N 2 (T y p e B I/F ) C N 1 4 ( O p tio n C S F ) C N 1 7 (F a n )*2 C N 6 (P E -F ro n t) C N 5 (P E -R e a r) C N 7 (T o p ) C N 4 (C R H P )
A d d re s s
C N 3 (fro m IC 1 2 (A 2 9 1 7 ) IC 1 1 (S L A 7 0 2 4 M ) IC 2 (P S T 5 9 2 ) C N 1 0 (P F ) C N 1 1 (C R )
P S )
C N 1 6 ( R e le a s e 2 ) C N 1 2 ( R e le a s e 1 ) C N 1 3 (P G 1 )
*1 : *2 :
R e fe r to th e C h a p te r 1 / M a in C o m p o n e n t / T a b le " R e la tio n s h ip b e tw e e n th e P r o g r a m
R O M
a n d C G ".
C N 1 7 o n th e m a in b o a r d is n o t u s e d b e c a u s e p o w e r fo r d r iv in g th e C o o lin g F a n is s u p p lie d fr o m th e p o w e r s u p p ly b o a r d . T h e r e fo r e , C N 1 7 is n o t u s e d .
Figure 2-1. Control Circuit Block Diagram
Operating Principles
Control Circuit
23
LQ-2080
The following figure shows the data flow from the host computer to the printhead. Data sent from the host computer is converted to image data and transmitted to the printhead through the gate array.
Revision A
The table below lists the each function of the main components of the C273 Main Board. Table 2-1. Functions of the Main Board
IC
C P U T M P 9 6 C 0 4 1 B F
Location
Function Receives data from the host computer and sends it to the input buffer in RAM (under interrupt processing control). Extends the input data held in the buffer to create image data. Loads this image data to the image buffer in RAM. Transfers the image data to the printhead driver circuit. Controls the functions below: · Controls output data from the internal block · Memory management · Address latch of the address/data bus from the CPU · Clock control unit · Bit manipulation · Interface control · Expanded parallel port · Printhead control · Motor control An electrically writable and erasable ROM used to hold information such as the TOF position and bidirectional adjustment value. The ROM contains the program that runs the CPU and holds the character design (also called the character generator). The RAM contains the CPU working area and the buffers. The CG contains the bitmap fonts for each character table. Driver circuit for the CR motor. Driver circuit for the PF motor.
O p tio n I/F P a r a lle l I/F H o s t C o m p u te r P r in t d a ta c o n v e r s io n 1
R A M In p u t B u ffe r
CPU
IC 4
G a te A rra y E 0 5 B 2 4 Y B
L in e E d it B u ffe r P r in t d a ta c o n v e r s io n 2
D a ta la tc h a n d d a ta o u tp u t
Im a g e B u ffe r
Gate Array
IC 3
Im a g e d a ta tra n s fe r
P r in th e a d d r iv e c ir c u it
EEPROM
IC 5
Figure 2-2. Data Flow
ROM
IC 10
RAM CG SLA7024M A2917SEB
IC 8 IC 6 IC 11 IC 12
Operating Principles
Control Circuit
24
LQ-2080
Revision A
2.3.1 System Reset Circuit
Control circuits IC3 and IC4 are initialized when a /RESET signal (LOW level) is output from port 1 (VOUT) of IC2. IC2 monitors the +5 V line on port 3, and resets under the following conditions:
+ 5 V IC 3 E 0 5 B 2 4 Y A
1. When the power supply is turned on, a /RESET signal is output. /RESET is canceled when the +5 V line goes up to 4.2 V, and then 100 ms passes. 2. When the +5 V line goes below +4.2 V, a /RESET signal is output. /RESET is canceled when the +5 V line goes back up to 4.2 V and then 100 ms passes.
IC 2 P S T 5 9 2 0 V O U T 1 M R E S 2 3 4 V C C G N D
R E S E T 7 4 R 6 3 1 K + 5 V 2 3 R E S E T
IC 4
T P M 9 6 C 0 4 1 A F
C 3 6 0 .1 U
Figure 2-3. Reset Circuit
(v ) 5 4 3 2 1 P o w e r O n V O U T (R E S E T ) V C C ( + 5 V lin e ) R E S E T R E S E T 1 0 0 m s 1 0 0 m s
Figure 2-4. Reset Signal Output Timing
Operating Principles
Control Circuit
25
LQ-2080
Revision A
2.3.2 Printhead Driver Circuit
The standard voltage for the A/D converter is made in ZD1 and input to CPU port 78. Based on this standard voltage, the A/D converter in the CPU operates. Port 74 monitors the +35 V line between R139 and R140 to determine the printhead driver pulse width. Using the monitored voltage, the CPU converts the voltage to a digital value and decides the printhead driver pulse width, and then transports the data to the gate array via CPU port 15. Based on the monitored voltage, the CPU decides the printing interval. Port 73 monitors the printhead temperature to protect the printhead. If the temperature exceeds 95° C (213° F), printing is stopped.
C N 8 a n d C N 9 ( P r in th e a d )
+ 3 5 V C 6 8 + + 3 5 V H T M P
P r in th e a d D r iv e T r a n s is to r
Q 1 - Q 2 4
R 1 5 8
P r in th e a d
D r iv e
S ig n a l
H D 1 - H D 2 4
R 1 3 9 A d d re s s D a ta L in e C P U
1 5 7 9 7 8 7 4 7 3
G a te A rra y
1 1 1
+ 3 5 V R 1 4 0
Z D 1 + 3 5 V C 1 9
Figure 2-5. Printhead Drive Circuit
Operating Principles
Control Circuit
26
LQ-2080
Revision A
The carriage motor driver circuit controls the CR motor, using an open-loop, constant drive arrangement. 2-2, 1-2, and W1-2 phases excite the motor. A 2-2 phase step is equivalent to a 1-2 phase step doubled. Ports 1, 8, 11, and 18 of the SLA7024M are used to change the excitation phase, depending on the selected print mode. Table 2-2 in the following page describes the motor driver modes. The SLA7024M (IC11) CR motor driver circuit detects and regulates the amount of current flowing in the carriage motor coil. The current flowing through the coil varies, depending on the speed of the CR motor. The CPU sets the amount of current and signals are sent via ports 32 to port 35. The SLA7024M sets the coil current, depending on the CR speed.
2.3.3 CR Motor Driver Circuit
The CR motor driver circuit is shown below.
C P U (IC 4 ) P G O 0 P G O 1 P G O 2 P G O 3 G A (IC 3 ) C R R F A 0 C R R F A 1 C R R F A 2 C R R F A 3 C R R F B 0 C R R F B 1 C R R F B 2 C R R F B 3 4 3 1 2 4 R 1 1 6 - R 1 1 9 3 1 2 4 3 1 2 5 1 7 1 6 3 6 S L A 7 0 2 4 M (IC 1 1 ) 8 /IN A A 1 2 3 4 /IN -A /IN B /IN -B -A B -B R F A R F B R 1 2 2 - R 1 2 5 1 4 1 1 8 1 1 C N 1 1 C R A C R -A C R B C R -B
Figure 2-6. CR Motor Driver Circuit
Operating Principles
Control Circuit
27
LQ-2080
Revision A
Table 2-2. CR Motor Driver Modes
Speed Mode 4 3 8/3 2 3/2 1 (Normal) 1 (copy) 3/4 2/3 Print Speed (CPS) 400 300 267 200 150 100 100 75 67 Drive Frequency (PPS) 4800 7200 6400 4800 3600 4800 2400 1800 1600 Excitation Phase 2-2 1-2 1-2 1-2 1-2 W1-2 1-2 1-2 1-2 High speed draft Draft, Bit image High speed draft copy High speed draft power down, Draft copy, Bit image copy, Bit image High speed draft power down, Draft power down, Bit image power down, Bit image Draft power down 2, Bit image power down, LQ, Bit image, Raster graphics High speed copy power down, Draft copy power down, Bit image copy power down, Bit image copy Bit image power down, Bit image power down 2 Bit image copy power down, LQ Copy, Raster graphics copy Bit image copy power down, Bit image copy power down 2, LQ power down, Bit image power down, Raster graphics power down LQ copy power down, Bit image copy power down, Raster graphics copy power down Raster graphics, Raster graphics copy Raster graphics power down Raster graphics copy power down Applications
1/2
50
2400
W1-2
1/3 1/4 1/6
33 25 17
1600 1200 800
W1-2 W1-2 W1-2
Operating Principles
Control Circuit
28
LQ-2080
Revision A
2.3.4 PF Motor Driver Circuit
The figure below shows the PF motor driver circuit.
E 0 5 B 4 2 (IC 3 ) P H A S E A P H A S E B P F I0 A P F I1 A P F I0 B P F I1 B /P F H O L D A 2 9 1 7 (IC 1 2 ) P H 1 P H 2 IN A IN -A IN B IN -B V R E F 1 V R E F 2 A -A B -B 3 3 2 4 1 8 2 1 6 1 C N 1 1 C R A C R -A C R B C R -B
2.3.5 EEPROM Control Circuit
The EEPROM is nonvolatile memory that stores information even if the printer power is off. The figure below shows the EEPROM control circuit.
1 2 2 1 1 9 1 2 3 1 2 1
4 3 2 6 2 1 2 3 2 4 4 4 2 5
C P U
P 7 0 P 7 1 P 7 2 P 7 3
9 1 1 0 1 1
2 3 4
1 2
C S C K D I D O
IC 5 E E P R O M
1 2 0 1 1 8 1 2 4
Figure 2-8. EEPROM Control Circuit The EEPROM is controlled by CPU ports 9 (P70), 10 (P71), 11 (P72), and 12 (P73). Port 11 is the data output line used to save the information to the EEPROM, and port 12 is the data input line used to read the saved data from the EEPROM. Port 70 is the chip select line, and port 71 is the clock timing line. When the PWDN signal (power down) is detected on port 20 (INTO), the CPU writes the necessary data to the EEPROM before the +5 V line drops to 4.75 V.
Figure 2-7. PF Motor Driver Circuit The PF driver current is controlled on the Gate Array and the signals are output via port 123 (PFI0A), port 121 (PFI1A), port 120 (PFI0B), and port 118 (PFI1B).
Operating Principles
Control Circuit
29
LQ-2080
Revision A
Two types of sensors are used in this printer. Release sensors 1 and 2, the PG sensors, and the front PE sensor are momentary switches. The HP sensor, rear PE sensor, and PW sensor are photo diode switches. The HP sensor detects CR home position when the photo diode rays are cut off by the printhead. The rear PE sensor detects that paper has been loaded when the photo diode rays are cut off by the sensor plate, which is included in the rear PE sensor. The PW sensor, used for paper width measurement and paper loading positioning, detects the paper edge by comparing the measured voltage with standard voltage, which was measured during the power on sequence. Additionally, the +35 V line and head temperatures are monitored to set the pulse length of the head driver signal.
2.3.6 Sensor Circuits
The CPU detects conditions of the following sensors: home position (HP) sensor, release sensors 1 and 2, platen gap (PG) sensor, rear and front paper end (PE) sensors, paper width (PW) sensor.
+ 5 V + 5 V 7 0 C P U (IC 4 ) P 4 0 6 8 P 5 3 7 6 + 5 V + 5 V
R e a r P E S e n s o r F ro n t P E S e n s o r
H P S e n s o r R e S e R e S e P G le a s e n s o r 2 le a s e n s o r 1 S e n s o r
P 3 6 P 2 7 A N 2 G A (IC 3 ) 6 1
P W ,T O P S e n s o r + 5 V + 5 V + 5 V
7 5
R e le a s e 1 R e le a s e 2
1 1 6 1 1 7
Figure 2-9. Sensor Circuit
Operating Principles
Control Circuit
30
DISASSEMBLY AND ASSEMBLY
LQ-2080
See the LQ-2070 Service Manual.
Revision A
Disassembly and Assembly
32
ADJUSTMENT
LQ-2080
Revision A NOTE: If you omit this operation, the printer will perform Uni-D print instead of Bi-D.
4.1 Overview
The adjustment items required for the LQ-2080 are the same as for the LQ-2070. Therefore, see Table 4-1 in the LQ-2170 Service Manual and perform any necessary adjustment after disassembling/assembling the printer.
C A U T IO N
5. Double-click "LQSERIES.EXE". The program starts up and the screen below appears.
Though the conditions for each adjustment are the same as for the LQ-2070, the adjustment program used for the LQ-2080 is different. Therefore, observe the instructions given in the following sections.
< * > < * > < * > E P S O N S ID M
P r in te r S e r v ic e P r o g r a m
b o o t p ro c e s s < *> < *> < *>
P le a s e s e le c t th e m o d e l n a m e . L Q -2 L Q -2 L Q -2 F X -9 1 8 0 5 8 0 H 0 8 0 8 0
4.1.1 Pre-operation for the Adjustment Program
1. Get a continuous paper. (136-column paper should be used to avoid printing on the platen.)
C A U T IO N
Do not use cut sheet for the Bi-D adjustment. Since the Bi-D adjustment has to be performed with the top and bottom edges of the sheet firmly set in the paper path, use of cut sheet will not provide accurate adjustment. Use single continuous paper. Adjustment program for serial dot matrix printer does not run without any paper loaded. So, be sure to turn the printer on first and then load paper.
E S C :Q u it
U P /D o w n :S e le c t
E N T E R :D e te r m in e
Figure 4-1. LQSERIES.EXE Initial Screen 6. Move the cursor to "LQ-2080" and press the Enter key. 7. The following screen appears.
2. Set the release lever to the continuous paper position. 3. Connect the printer and the PC and turn the printer on. 4. Press the Load/Eject button to send the paper to the stand-by position. Then press the LF/FF button more than 10 times until the leading edge of the paper is completely out of the printer.
Adjustment
Overview
34
LQ-2080
Revision A
< * > < * > < * > E P S O N S ID M
P r in te r S e r v ic e P r o g r a m
b o o t p ro c e s s < *> < *> < *>
< * > < * > < * > E P S O N S ID M
P r in te r S e r v ic e P r o g r a m
b o o t p ro c e s s < *> < *> < *>
S e le c t th e d e s tin a tio n . E A I E A I(L a tin ) E A L E S P E H K E T T
E S C :Q u it
E C C P h ilip E S P (T E U L (M E U L E U L S
E U L (N o r d ic ) p in e E F S h a i) E IB id d le E a s t) E IS E D G (N L S P ) td . E M O
E N T E R :D e te r m in e
D o y o u s ta r t th e S e r v ic e P r o g r a m ? P e r fo r m (B o o t th is P R O G R A M ) N o (R e -s e le c t m o d e l n a m e ) G o t (C h e c k th is m o d e l n a m e )
U P /D o w n :S e le c t
E S C : Q u it
U P /D o w n : S e le c t
E N T E R : D e te r m in e
Figure 4-2. Destination Selection Screen 8. Check the printer to be adjusted for the destination and press the Enter key.
Figure 4-3. Main Menu Selection Screen 10. Select "Perform". The following screen appears.
C A U T IO N C A U T IO N
Be sure to select a proper destination. If you select a wrong destination, the printer may not print desirable characters.
Select "No" if you have input a wrong model name in the screen shown in Figure 4-1. If you select "Got", the printer flashes the model name stored in the RAM to the EEPROM once and reads it again.
S E R V IC E P R O G R A M V e r s io n 1 .1 **************
9. The following screen appears.
************** L Q -2 0 8 0
< > < > S E R V IC E IT E M S < > < > 1 . B 2 . P 3 . S 4 . T
E S C :Q u it
i-D A r in t D e t o r P E R
d ju a ta re p e s e t
s tm e n t o n E E P R O M ly S ta r tin g d a te
E N T E R :D e te r m in e
U P /D o w n :S e le c t
Figure 4-4. Main Menu Screen
Adjustment
Overview
35
LQ-2080
Revision A
4.1.2 Bi-D Adjustment
This adjustment is made after the main board or the CR motor has been replaced. The purpose of this adjustment is to electrically correct the head wire's point of impact during Bi-D printing. The adjusted value is stored in the specific address in the EEPROM. Once the value is stored, it will not be erased if the printer is turned off or the EEPROM is reset.
C A U T IO N C A U T IO N
If the printer is in the emulation mode, characters output for the Bi-D adjustment will be garbled. If so, turn ESC/P2 on using the EEPROM Initialization mode.
The value "0" shown in the screen shown in Figure 4-5 is the initial value used in the program, which varies from the one stored in the EEPROM. However, if the main board has been replaced, the value in the EEPROM is replaced with "0"as the initial value. The printing pattern below is a sample for the high speed mode. Be sure to perform the adjustment in draft copy mode and LQ mode as well.
B i- D d a ta = -1
D ra ft m o d e
1. Perform the pre-operation. (See Section 4.1.1.)
D ra ft m o d e B i- D d a ta = -0
2. Select "1. Bi-D Adjustment". The following screen appears.
D ra ft m o d e B i- D d a ta = 1
************** L Q -2 0 8 0
S E R V IC E P R O G R A M
V e r s io n 1 .1
**************
< B i-D a d ju s tm e n t> D ra ft M o d e D ra ft C o p y M o d e L Q M o d e = = 0
W r ite to E E P R O M [E N T E R ] P r e v io u s [E S C ] P r in t o u t S e le c t s p e e d [S P A C E ] [U p /D o w n ]
= 0
0
Figure 4-6. Bi-D Pattern Sample 4. Output the patterns for the Draft Copy Mode and the LQ Mode, the rest of the three modes in the screen (Figure 4-5). Then check that the vertical lines in the middle row for each mode are aligned. (If no adjustment is needed, you can turn the printer off, not continuing to the next step.) 5. Examine the patterns for the three modes output in the previous steps, and correct the value in the screen shown in Figure 4-5 until the vertical lines for the center value (Data = 0 in Figure 4-6) are aligned.
A d ju s t v a lu e [L e ft/R ig h t]
Figure 4-5. Initial Menu of the Bi-D Adjustment 3. Press the Space key to check the current Bi-D setting condition for the draft mode. The printer prints the following pattern.
Adjustment
Overview
36
LQ-2080
6. When this adjustment is completed, if you need to perform another adjustment using this program, you can continue without turning off the printer.
Revision A
4.1.3 TPE Level Reset
Make this adjustment when the main board or Top PE Sensor has been replaced. Generally, light level emitted from the photo diode in a photo sensor lowers with age. For this reason, the printer renews the current paper remaining level by detecting the black level of the platen each time the printer is turned on or paper is fed. When the TPE level is reset, FF is written and it approaches 00 as the time goes by. If this operation is not performed, paper out condition may be detected despite paper is set. 1. Perform the pre-operation. (See Section 4.1.1.) 2. Select "TPE Reset" in the main menu screen (Figure 4-4) and press the Enter key. The screen below appears.
************** L Q -2 0 8 0
S E R V IC E P R O G R A M
V e r s io n 1 .1
**************
< R e s e t T o p p a p e r a n d d e te c tio n le v e l> D o y o u w a n t to r e s e t T o p p a p e r -e n d d e te c tio n le v e l? Y e s N o
E S C :P r e v io u s U P /D o w n :S e le c t E N T E R :D e te r m in e
Figure 4-7. Screen - TPE Reset 3. Select "Yes" and press the Enter key. FF is written in EEPROM when the printer power is turned off.
Adjustment
Overview
37
LQ-2080
Revision A
4.1.4 Writing the User-characteristic Data
Use this function to check the specific records of the printer used by your customer. Also, you can renew the starting date using this program. Since there is no standardized service operation using this function, you can use it whenever necessary. 1. Perform the pre-operation. (See Section 4.1.1.) 2. Select "Set or Reply Starting Date" and press the Enter key. The screen below appears.
[To check the current status]
3. Select "Characteristic Status Code" and press the Enter key. The following screen appears.
C h a r a c te r is tic s ta tu s c o d e
1 . S 2 . T 3 . T 4 . T ta o t o t o t r tin a l p a l p a l p r ib g d r in o w r in b o e -----> g lin e o n h o g lin e n c h a n g e a t tin e r tin 9 9 c o u u r c o u tim / 1 n t --> n t in 1 1 (O d d c o u n te r ) ---> 3 5 7 7 lin e fo r g (T r ip c o u n te r ) ---> 3 5 7 7 lin e s
C A U T IO N
When using this function, the printer must be in the normally operative condition. Make sure the printer is free from any error conditions such as paper out, fatal error, and so on. Otherwise, the function is not effective.
E S C :P r e v io u s
************** L Q -2 0 8 0
S E R V IC E P R O G R A M
V e r s io n 1 .1
**************
< * > < * > < * > S e t o r R e p ly S ta r tin g d a te < * > < * > < * > C h a r a c te r is tic s ta tu s c o d e S e t s ta r tin g y e a r / m o n th / d a te
Figure 4-9. Screen - Characteristic Status Code
[To renew the Starting Year / Month / Date]
4. Select "Set Starting year / month / date" and press the Enter key. The following screen appears.
E S C :Q u it
U P /D o w n :S e le c t
E N T E R :D e te r m in e
Figure 4-8. Screen - Set or Reply Starting Date
Adjustment
Overview
38
LQ-2080
Revision A
S e ttin g S ta r tin g Y e a r /M o n th /D a y
In p u t fo r m a t: 1 9 9 9 /1 /1 ---> 9 9 0 1 0 1
P le a s e in p u t 6 d ig its > >
Figure 4-10. Screen - Setting Starting Year / Month / Date 5. Input a 6-digit data. Be sure to input it correctly since this program does not perform comparison check with the system timer. If you input a wrong data, start from the beginning.
Adjustment
Overview
39
TROUBLESHOOTING
LQ-2080
Revision A
5.1 Overview
This chapter contains information necessary for troubleshooting. Like other chapters, this chapter does not include the information common to the LQ-2070.
5.2.4 The Error codes with Indicators and Buzzer
Error codes indicated by the LEDs Table 5-1. Error Code Indicated by the LEDs
Pause Paper Out On Blink --Blink Tear Off / Bin ------Blink Condensed ------Blink Font ------Blink
5.2 Troubleshooting Information
This section gives you troubleshooting information to let you test points for replaceable units.
Paper out error Paper eject warning Head hot warning Fatal error
On On Blink Blink
5.2.1 Printhead
The information in this section is the same as for the LQ-2070 except for the point below:
Buzzer
Point: Table 5-1 (LQ-2070 Service Manual) Meter Reading 39.3 ± 10%
29.6 ± 10%
Paper out error:Beeper sounds (...) * Release lever operation error:Beeper sounds (- - - - -)* Illegal panel operation:Beeper sounds (.)*
5.2.2 Sensors
See the LQ-2070 Service Manual.
* The description (.) and (-) shows how the beeper sounds. (.): Beeper sounds approx.100 ms and interval is approx. 100 ms. (-): Beeper sounds approx.500 ms and interval is approx. 100 ms.
5.2.3 Motors
See the LQ-2070 Service Manual.
Troubleshooting
Overview
41
LQ-2080
Revision A
5.3 Unit Level Troubleshooting
The information for this section is the same as for the LQ-2070 except for the point below: Table 5-2. Repairing the C272MAIN Board (1/3)
Problem The printer does not operate at all. Cause Reset IC2 is defective. Checkpoint Check the voltage waveforms of the VCC signal (CH1: IC2 pin 3) and VOUT signal (CH2: IC2 pin 1) when power is turned on. Solution Replace IC2.
Point: Main board number C186 Main Board
C273 Main Board
5.4 Repairing the C166 PSB/PSE Board
See LQ-2070 Service Manual.
5.5 Repairing the C273 Main Board
This section provides instructions to repair the C273 Main Board assembly. It describes various problems, symptoms, likely causes, and solutions. The checkpoint column provides proper waveforms, resistance values, and other information for each component of C273 Main Board.
The PROM (IC10) is not selected. Check for a change in the signal from HIGH/LOW at pin 22 of IC10. Replace IC10 (or replace the main board).
NOTE: This information is necessary only for servicers who repair to the component level. Servicers who repair to the unit level (including all servicers in the U.S.) can ignore this section.
The PSRAM (IC8) is not selected.
Check for a change in the signal from HIGH/LOW at pin 22 of the IC.
Replace IC8 (or replace the main board).
Troubleshooting
Unit Level Troubleshooting
42
LQ-2080
Table 5-3. Repairing the C272MAIN Board (2/3)
Problem The printer does not operate at all. Cause CR1 is defective. Checkpoint Check the oscillator signal at pins 26 or 27 of the CPU. Solution If the signal is not correct, replace IC4 (or replace the main board). Otherwise, replace CR1. Problem Paper feed is abnormal.
Revision A
Table 5-4. Repairing the C272MAIN Board (3/3)
Cause IC3 is defective or IC12 is defective. Checkpoint · Check input signal waveform at pin 8 of IC12. · Check output signal waveform at pins 1, 2, 23, and 24 of IC12. Solution If the input signal is not correct, replace IC1 or IC2 (or replace the main board). If the input signal is correct and the output signal is not correct, replace the IC11.
Carriage operation is abnormal.
IC11 or IC4 is defective.
· Check input signal waveform (CH1) at pins 6, 5, 17, and 16 of IC11. · Check output signal waveform (CH2) at pins 8, 1, 18, and 11 of IC11.
If the input signal is not correct, replace IC4 (or replace the main board). If the output signal is not correct, replace IC11.
No data is printed.
IC4 is defective.
Check the output signal waveform at pin 15 of IC4.
If this signal is not output, replace IC4 (or replace the main board).
A particular dot fails to print. IC4 is defective. Check the output signal at pins 1 to 4 of IC4. If there is no output signal, replace IC4 (or replace the main board).
IC3 is defective or one of the head drive transistors is defective (Q1 Q24).
· Check the voltage waveform (CH1) at port HD1 - HD24 of IC3. · Check the voltage waveform (CH2) for each transistor.
If the head drive signal is not output, replace IC3 (or replace the main board). If the head drive signal is output from the head drive transistors, replace the head drive transistor.
Troubleshooting
Repairing the C273 Main Board
43
LQ-2080
Revision A
5.6 Repairing the Printer Mechanism
The information for this section is also the same as for the LQ-2070 except for the point below.
Point: Table 5-8 (LQ-2070 Service Manual) 39.3 ohms
29.6 ohms
Troubleshooting
Repairing the Printer Mechanism
44
MAINTENANCE
LQ-2080
See the LQ-2070 Service Manual.
Revision A
Maintenance
46
APPENDIX
LQ-2080
Revision A
Table 7-2. EEPROM Address Map (2/7)
Address 04H, 05H Data Page length for rear tractor Page length for front tractor Page length for CSF bin 1 Page length for CSF bin 2 TOF adjustment value for rear tractor TOF adjustment value for front tractor TOF adjustment value for CSF bin 1 TOF adjustment value for CSF bin 2 TOF adjustment value for rear manual insertion TOF adjustment value for front manual insertion Bottom margin for rear tractor Bottom margin for front tractor Font selection Data Format 1 to 22x360 (by 1/360 inch) 0000H: 11 inch (default) 1 to 22x360 (by 1/360 inch) 0000H: 11 inch (default) 1 to 22x360 (by 1/360 inch) 0000H: 22 inch (default) 1 to 22x360 (by 1/360 inch) 0000H: 22 inch (default) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) -60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch) 1 to 22x360 (by 1/360 inch), 0000H: 11inch (default) 1 to 22x360 (by 1/360 inch), 0000H: 11inch (default) 0: 1: 2: 3: Roman Draft Sans serif Courier 4: Prestige 5: Script 6: Others
(default)
7.1 EEPROM Address Map
NOTE: The data of two or more bytes are assigned in such way as lower byte to lower address, higher byte to higher address.
Table 7-1. EEPROM Address Map (1/7)
Address Data Data Format Q-pit data 0000H Factory setting 0000H 06H, 07H
Q-pit data 0000H
(11 inch)
Factory setting 0000H
(11 inch)
0000H
(11 inch)
0000H
(11 inch)
00H, 01H (reserved) Area 1 02H, 03H Character table selection 0: PC437 1: PC850 2: PC860 3: PC863 4: PC865 5: PC861 6: BRASCII 7: Abicomp 8: ISO Latin 1 9: Roman 8 10:PC437 Greek 11:PC852 12:PC853 13:PC855 14:PC857 15:PC864 16:PC866 17:PC869 18:ISO Latin 1T 37:Italic U.S.A. 38:Italic France 39:Italic Germany I 40:Italic U.K. 19:ISO 8859-7 20:MAZOWIA 21:Code MJK 22:Bulgaria 23:Estonia 24:PC774 25:ISO 8859-2 26:PC866 LAT 27:PC866 UKR 28:Hebrew 7 29:Hebrew 8 30:PC862 31:PCAPTEC 32:PC708 33:PC720 34:PCAR864 35:PC858 36:ISO 8859-15 41:Italic Denmark 42:Italic Sweden 43:Italic Italy 44:Italic Spain
08H, 09H
0000H
(22 inch)
0000H
(22 inch)
0AH, 0BH 0000H 0000H
(PC437)
0000H
(22 inch)
0000H
(22 inch)
0CH, 0DH 0EH, 0FH 10H, 11H 12H, 13H 14H, 15H
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
0000H
(8.5 mm)
16H, 17H
0000H
(8.5 mm)
0000H
(8.5 mm)
18H, 19H 1AH, 1BH 1CH
0000H
(11 inch)
0000H
(11 inch)
0000H
(11 inch)
0000H
(11 inch)
00H
(Roman)
00H
(Roman)
Appendix
EEPROM Address Map
48
LQ-2080
Table 7-3. EEPROM Address Map (3/7)
Address 1DH Data Condensed 0: Off 1: On Data Format Q-pit data 00H (Off) 00H 0: Bi-d. 1: Uni-d. 2: Auto 0: Auto I/F selection 1: Parallel I/F 2: Type-B I/F 10:10 sec. 30:30 sec. 00:10 sec. (default) b0: Auto line feed 0: Off, 1: On b1: Auto tear off 0: Off, 1: On b2: Skip over perforation 0: Off, 1: On b3: High speed draft 0: On, 1: Off b4: Input buffer 0: On, 1: Off b5: (reserved) b6: (reserved) b7: (reserved) 00H (Bi-d.) 00H (Auto) 0AH
(10 sec.)
Revision A
Table 7-4. EEPROM Address Map (4/7)
Factory setting 00H (Off) 00H 00H (Bi-d.) 00H (Auto) 0AH
(10 sec.)
Address 23H
Data Software 0 slash Buzzer Roll paper Auto CR A. G. M. -----
Data Format b0: Software 0: ESC/P2, 1: IBM 2391 Plus b1: 0 slash, 0: Off, 1: On b2: Buzzer 0: On, 1: Off b3: Roll paper 0: Off, 1: On b4: Auto CR (IBM) 0: Off, 1: On b5: A. G. M. (IBM) 0: Off, 1: On b6: (reserved) b7: (reserved) -128 to +127 (by 1/360 inch) 0: Roman T 1: Sans Serif H 2: OCR-B 3: Orator 4: Orator-S 5: Script C
Q-pit data 00H
Factory setting 00H
1EH 1FH
(reserved) Print direction setting I/F mode selection
20H
21H
Auto I/F wait time setting
22H
Auto line feed Auto tear off Skip over perforations High speed draft Input buffer -------
00H
00H 24H, 25H 26H Tear-off adjustment value Other font selection Backup flags 1 Copy mode Backup flags 2 In tear-off state Bin select
0000H 00H
0000H 00H
27H
00H 0: Friction Bin 1 or Tractor not Tear off 1: Friction Bin 1 2: Friction Bin 2 3: Friction Card 4: Tractor & Tear off
00H
28H
00H
00H
Appendix
EEPROM Address Map
49
LQ-2080
Table 7-5. EEPROM Address Map (5/7)
Address 29H Data Panel mask pattern 1 Data Format b0: LOAD function b1: EJECT function b2: FONT selection b3: CONDENSED selection b4: TEAR OFF function b5: BIN selection b6: Draft self test b7: LQ self test b0: LF function b1: FF function b2: Micro Adjust function b3: Pause function b4: Data dump b5: Default setting b6: Bi-d. adjustment b7: (reserved) 3 to 30 (by 0.1 sec.), 00H: 2 sec when Normal mode. (same as 3 sec when copy mode. default) 3 to 30 (by 0.1 sec.), 00H: 3 sec. (default) Q-pit data 00H Factory setting 00H Address 3CH 3DH 3EH 3FH
Revision A
Table 7-6. EEPROM Address Map (6/7)
Data Starting Year Starting Month Starting Date Black paper mode paper width measure Data Format 0 - 99 (the last two figures of Anno Domini) 1 - 12 1 - 31 b0: black paper mode 0: Off, 1: On b1: paper width measure 0: On, 1: Off b2 to b7: (reserved) -120 to -60, 0: -60 (4.2 mm) In case it is bigger than -60, the value is considered -60. bit0-3: BUSY timing data bit4-7: XAACK timing data Q-pit data 00H 00H 00H 00H Factory setting 00H 00H 00H 00H
2AH
Panel mask pattern 2
00H
00H 40H to 41H TOF Minimum value
00H
00H
42H
I/F timing data
00H
00H
43H 00H
(2or3 sec.)
(complement of 42H)
FFH 00H 0000H 1 to 22x360 (by 1/360 inch), 0000H: 22 inch (default) 1 to 22x360 (by 1/360 inch), 0000H: 22 inch (default) 00H to 09H 0000H
(22 inch)
FFH 00H 0000H 0000H
(22 inch)
2BH
Manual insertion wait time Tear-off wait time
00H
(2or3 sec.)
44H to 5DH 5EH, 5FH 60H, 61H 62H, 63H 64H to 66H 67H
(reserved) Paper edge length Page length for rear manual insertion Page length for front manual insertion Sub-number for customization (reserved)
2CH
00H (3 sec.) 00H
00H (3 sec.) 00H 00H 000000 00H 000000 00H 000000 00H
2DH to 2EH 2FH
(reserved) Copy mode 0: Off 1: On
00H 000000 00H 000000 00H 000000 00H
0000H
(22 inch) 000000H
(Standard)
0000H
(22 inch) 000000H
(Standard)
30H-33H Driving line count for ribbon change timing 34H-37H Driving Hour 38H3BH Driving Line Count
0 - 0FFFFFFFFH (count)
0 - 0FFFFFFFFH (minutes) 0 - 0FFFFFFFFH (count)
00H
00H
Appendix
EEPROM Address Map
50
LQ-2080
Table 7-7. EEPROM Address Map (7/7)
Address Area 2 68H 69H 70H 71H Area 3 72H 73H 74H 75H 76H 77H 78H 79H 7AH to 7FH Vp adjustment value Vp adjustment value (complement of 72H) Bi-d adjustment value for high speed draft / draft mode Bi-d adjustment value for draft copy mode Bi-d adjustment value for LQ mode (reserved) TPE level TPE adjustment position (reserved) -10 to +10 (by 1/180 inch) -12 to +12 (by 1/720 inch) -12 to +12 (by 1/720 inch) -12 to +12 (by 1/720 inch) 80H 7FH 00H 00H 00H 00H FFH 00H 00H *a) *a) *a) *a) *a) 00H FFH 00H 00H Market IBM character table (reserved) Check sum of Area 2 0: Standard version 1: NLSP version 0: Table2 1: Table1 00H 00H 00H 00H 00H 00H 00H 00H Data Data Format Q-pit data Factory setting
Revision A
7.2 Connector Summary
The information in this section is common to the LQ-2070 Service Manual except for the point below:
Point: Figure A-1 (LQ-2070 Service Manual) C186 Main Board
C273 Main Board
*a) These data are fixed by each printer hardware in the factory. They should not be changed afterwards.
Appendix
Connector Summary
51
LQ-2080
Revision A
7.3 Component Layout
Figure 7-1. C273 Main Board Component Layout - Component Side
Appendix
Component Layout
52
LQ-2080
Revision A
Figure 7-2. C273 Main Board Component Layout - Soldering Side
Appendix
Component Layout
53
LQ-2080
Revision A
7.4 Circuit Diagram
See the following page for the circuit diagram for the C273 Main Board.
Appendix
Circuit Diagram
54