Epson 2080 - LQ B/W Dot-matrix Printer User manual

EPSONLQ-2080
Impact Serial Dot Matrix Printer
SEDM98002
®


Notice:

All ri
g
hts 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, photocopyin
g
, recordin
g
, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

The contents of this manual are subject to chan
g
e 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
g
reatly appreciate bein
g
informed of them.

The above not withstandin
g
SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences
thereof.
EPSON is a re
g
istered trademark of SEIKO EPSON CORPORATION.
General Notice: Other product names used herein are for identification purpose only and may be trademarks or re
g
istered trademarks of their
respective owners. EPSON disclaims any and all ri
g
hts in those marks.
Copyri
g
ht © 1996 SEIKO EPSON CORPORATION. Printed in Japan.

PRECAUTIONS
Precautionary notations throu
g
hout the text are cate
g
orized relative to 1)Personal injury and 2) dama
g
e to equipment.
DANGER
Si
g
nals a precaution which, if i
g
nored, could result in serious or fatal personal injury. Great caution should be exercised in
performin
g
procedures preceded by DANGER Headin
g
s.
WARNING
Si
g
nals a precaution which, if i
g
nored, could result in dama
g
e to equipment.
The precautionary measures itemized below should always be observed when performin
g
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 ANTI-
STATIC 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
g
iven to the precautions on
the precedin
g
pa
g
e. The chapters are or
g
anized as follows:
CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the product.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the
product.
CHAPTER 4. ADJUSTMENTS
Provides Epson-approved methods for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides the step-by-step procedures for troubleshooting.
CHAPTER 6. MAINTENANCE
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 Issued Date Description
A March 08, 1999 First release

Revision A
6
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
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
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
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
Maintenance
Appendix
EEPROM Address Map ................................................................................. 48
Connector Summary ..................................................................................... 51
Component Layout ....................................................................................... 52
Circuit Diagram ............................................................................................ 54



PRODUCTDESCRIPTION

LQ-2080 Revision A
Product Description Specifications 8
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.
1.1.1 Features
 Print speed: High speed draft: 400 cps
Draft: 300 cps
LQ: 100 cps at 10 cpi
 Character tables: Standard version: 13 tables
NLSP version: 38 tables
 Input data buffer: 0 Kbyte or 64 Kbyte
(depend on the default setting)
 Acoustic noise: 50 dB (A) (ISO 7779 pattern)
 Reliability: MVBF *: 19 million lines
(except printhead)
MTBF: 10,000 power on hours (POH)
 Control codes: ESC/P2 and IBM 2391 Plus emulation
 Copy capability: 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
* : Mean print volume between failure (MTBF 25% duty cycle)
1.1.2 Accessories
Table 1-1. Items Included with the Printer
Table 1-2. Consumables and Optional Units
Enclosed Items Quantity
User's manual 1
Driver diskette 1
Ribbon cartridge 1
Power supply cable (230 V Version) 1
Unit Description*1
*1: The number represented by an asterisk varies, depending on the country.
Ribbon cartridge S015086
Ribbon pack S010033
High-capacity cut sheet feeder (bin 1) C80673*
Second bin cut sheet feeder (bin 2) C80674*
Pull tractor unit C80032*
Roll paper holder #8310
Serial I/F card C82305* / C82306*
32KB intelligent serial I/F card C82307* / C82308*
32KB intelligent parallel I/F card C82310* / C82311*
Local Talk I/F card C82312*
32KB IEEE-488 I/F card C82313*
Coax I/F card C82314*
Twinax I/F card C82315*
IEEE-1284 parallel I/F card C82345*
Ethernet I/F card C82357*, C82362*, C82363**2, C82364*
*2: When you use Ethernet interface card (C82363*), you need to attach the
optional interface card adapter (C82525*) to the interface card.

LQ-2080 Revision A
Product Description Hardware Specifications 9
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.
1.2.2 Printing Specifications
 Copy capability: 1 original + 4 copies
 Print speed and printable columns
Table 1-3. Print Speed and Printable Columns
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.
1.2.3 Paper Handling
 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)
 Copy mode: 1/6 inch feed : 66 msec
Continuous feed : 0.092 MPS (m/second)
3.6 IPS (inches/second)
Print Mode Character
Pitch Printable Columns
Print Speed (cps)
Normal Copy
High-speed
draft 10 cpi 136 400 266
Draft
10 cpi 136 300 200
12 cpi 163 360 240
15 cpi 204 450 300
Draft
Condensed 17 cpi 233 257 171
20 cpi 272 300 200
LQ
10 cpi 136 100 66
12 cpi 163 120 80
15 cpi 204 150 100
LQ Condensed 17 cpi 233 171 114
20 cpi 272 200 133

LQ-2080 Revision A
Product Description Hardware Specifications 10
 Release lever: See the following table.
Table 1-4. Release Lever Settings
 Paper thickness lever: See the following table.
Table 1-5. Adjust Lever Setting Position
Lever Position Paper path / Feeder Paper / Media
Friction
Manual insertion (front) Cut sheet
(Single sheet & Multi part), Card
Manual insertion (rear) Cut sheet (Single sheet & Multi part),
Card, Envelope
CSF Bin 1 Cut sheet (Single sheet & Multi part),
Card, Envelops
CSF Bin 2 Cut sheet (Single sheet)
Roll paper holder Roll paper
Front tractor Push tractor feed (front) Continuous paper (Single sheet & Multi
part), Continuous paper with labels
Push & Pull tractor feed
(front) Continuous paper (Single sheet & Multi part), Continuous paper with labels
Rear tractor Push tractor feed (rear) Continuous paper
(Single sheet & Multi part)
Push & Pull tractor feed
(rear) Continuous paper (Single sheet & Multi part)
Full release
Pull tractor feed (front) Continuous paper (Single sheet & Multi
part), Continuous paper with labels
Pull tractor feed (rear) Continuous paper
(Single sheet & Multi part)
Pull tractor feed
(bottom) Continuous paper (Single sheet & Multi part), Continuous paper with labels
Setting
Position
Paper Thickness (inch) Paper Thickness (mm)
Minimum Maximum
00.0024 0.0047 over 0.06 up to 0.12
10.0047 0.0074 over 0.12 up to 0.19
20.0074 0.0102 over 0.19 up to 0.26
30.0102 0.0126 over 0.26 up to 0.32
40.0126 0.0141 over 0.32 up to 0.36
50.0141 0.0157 over 0.36 up to 0.40
60.0157 0.0173 over 0.40 up to 0.44

LQ-2080 Revision A
Product Description Hardware Specifications 11
1.2.4 Paper Specifications
 Cut Sheet (Single sheet, Multipart)
 Card
1.2.5 Ribbon Specificatio
 Ribbon life: Approximately 8 million characters
(LQ 10 cpi, 48 dots / character)
1.2.6 Electrical Specifications
 120 V Version
 Input voltage range: AC 99 to 132 V
 Rated current: 1.0 A (max. 3.2 A)
 Power consumption: Approximately 35 W
(ISO/IEC10561 Letter pattern)
Energy Star Compliant
 230 V version
 Rated current: 0.5 A (max. 1.6 A)
 Power consumption: Approximately 37 W
(ISO/IEC10561 Letter pattern)
Energy Star Compliant
1.2.7 Environtal Conditions
See the LQ-2070 Service Manual.
1.2.8 Reliability
 MVBF *: 19 million lines (except printhead)
 MTBF: 10000 POH
 Printhead life: 200 million strokes/wire
*: Mean print volume between failure
Front Entry Rear Entry
Width <Minimum> 3.9 inch
100 mm
<Minimum>
3.9 inch
100 mm
Front Entry Rear Entry
Width <Minimum>
3.9 inch
100 mm
<Maximum>
7.8 inch
200 mm
<Minimum>
3.9 inch
100 mm
<Maximum>
7.8 inch
200 mm
Length <Minimum> 5.8 inch
148 mm
<Maximum>
7.8 inch
200 mm
<Minimum>
3.9 inch
100 mm
<Maximum>
7.8 inch
200 mm

LQ-2080 Revision A
Product Description Hardware Specifications 12
1.2.9 Safety Approvals
 120 V version
 Safety standards: UL1950, CSA C22.2 No. 950
 EMI: FCC part15 subpart B class B
CSA C108.8 class B
 230 V version
 Safety standards: EN60950 (TUV)
 EMI: 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)
1.2.11 Physical Specifications
 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

LQ-2080 Revision A
Product Description Firmware Specifications 13
1.3 Firmware Specifications
This section describes the firmware specifications for the LQ-2080.
1.3.1 Control Codes and Fonts
 Control codes: ESC/P2 and IBM 2391 Plus Emulation
 Character tables:
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
* Not displayed in the Default setting mode.
International character set (14 countries and legal)
U.S.A. France Germany
U.K. Denmark 1 Sweden
Italy Spain 1 Japan
Norway Denmark 2 Spain 2
Latin America Korea Legal
* 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 10 CPI, 12 CPI, 15CPI
EPSON Roman 10 CPI, 12 CPI, 15CPI, Proportional
EPSON Sans Serif 10 CPI, 12 CPI, 15CPI, Proportional
EPSON Courier 10 CPI, 12 CPI, 15CPI
EPSON Prestige 10 CPI, 12 CPI
EPSON Script 10 CPI
EPSON OCR-B 10 CPI
EPSON Orator 10 CPI
EPSON Orator-S 10 CPI
EPSON Script C Proportional
Scalable fonts
EPSON Roman 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)
EPSON Sans Serif 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)
EPSON Roman T 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)
EPSON Sans Serif H 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)
Bar codes
EAN-13, EAN-8 Interleaved 2 of 5
UPC-A UPC-E Code 39
Code 128 POSTNET

LQ-2080 Revision A
Product Description Firmware Specifications 14
Table 1-6. Character Tables and Available Typefaces
Character Tables Bit map font Scaleable font
Standard
version
Italic table*1
PC 850 (Multilingual)*1
PC 861 (Icelandic)*1
PC 863(Canadian-French)*1
Abicomp*1
Roman 8
PC 858
PC 437 (US, Standard Europe)*1
PC 860 (Portuguese)*1
PC 865 (Nordic)*1
BRASCII*1
ISO Latin 1
ISO 8859-15
EPSON Draft
EPSON Roman
EPSON Sans Serif
EPSON Courier
EPSON Prestige
EPSON Script
EPSON OCR-B
EPSON Orator
EPSON Orator-S
EPSON Script C
EPSON Roman
EPSON Sans Serif
EPSON Roman T
EPSON Sans Serif H
NLSP
version
Italic table*1
PC 850 (Multilingual)*1
PC 861 (Icelandic)*1
PC 865(Nordic)*1
Abicomp*1
lSOLatin1
ISO 8859-15
PC 437(US, Standard Europe)*1
PC 860(Portuguese)*1
PC863 (Canadian-French)*1
BRASCIl*1
Roman8
PC 858
PC 864 (Arabic) EPSON Draft
EPSON Roman (Not supported)
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 852 (East Europe)
PC 855 (Cyrillic)
PC 866 (Russian)
MAZOWIA (Poland)
lSO 8859-7 (Latin/Greek)
Bulgaria (Bulgarian)
Estonia (Estonia)
PC 866 LAT. (Latvian)
EPSON Draft
EPSON Roman
EPSON Sans Serif
EPSON Courier
EPSON Prestige
EPSON Script
(Not supported)
PC APTEC (Arabic)
PC 720 (Arabic) PC 708 (Arabic) PCAR864 (Arabic)
EPSON Draft (Arabic)
EPSON Roman
EPSON Sans Serif (Not supported)
Hebrew7*2
Hebrew 8*2
PC862 (Hebrew)*2
EPSON Draft (Hebrew)
EPSON Roman
EPSON Courier (Not supported)
*1: ESC R command is effective on these character tables.
*2: Not displayed in the default setting mode.

LQ-2080 Revision A
Product Description Firmware Specifications 15
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.
1.3.2.1 Parallel Interface (Forward Channel)
 Transmission mode: IEEE-1284 compatibility mode
 Signal level: TTL compatible
(IEEE-1284 level 1 device)
 Pin assignment: The pin assignment (forward channel) is
the same as for the LQ-2070 except for
the function of the pin below:
1.3.2.2 Parallel Interface (Reverse Channel)
 Transmission mode: 8 bit parallel, IEEE-1284 nibble mode
 Synchronization: Refer to the IEEE-1284 specification.
 Handshaking: Refer to the IEEE-1284 specification.
 Signal level: IEEE-1284 level 1 device
 Data transmission timing: Refer to the IEEE-1284 specification.
 Device ID:
 Pin assignment: The pin assignment (reverse channel) is
the same as for the LQ-2070 except for
the functions of the pins below:
Pin No. Function
35 This line is pulled up to +5 V through 1.0 k Ωresistor.
[00H][4DH]
MFG: EPSON;
CMD: ESCPL2,PRPXL24,BDC;
MDL: LQ-2080;
CLS: PRINTER;
DES: EPSON[SP]LQ-2080;
Pin No. Function
18 This line is pulled up to +5 V through 3.9 k Ωresistor.
35 This line is pulled up to +5 V through 1.0 k Ωresistor.

LQ-2080 Revision A
Product Description Operation Instruction 16
1.4 Operation Instruction
This section provides information on the LQ-2080 control panel buttons,
LED, and operations. Since the layoutand 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 LQ-
2070 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
NOTE: Unlike the LQ-2070, the LQ-2080 doees not support the
quiet mode.
Table 1-8. Default Setting Menu
No. Load / Eject Function
1 Load / Eject LQ self test
2LF / FF Draft self test
3 Condensed Default setting (See the following table for
the setting menu.)
4Load / Eject & LF / FF Data dump
5 Font & Tear Off / Bin EEPROM clear
6Tear Off / Bin & Load / Eject Clear EEPROM for Driving Line count for
ribbon change timing
7 Pause Bi-d adjustment
8The others Not available.
Item Setting / Value*1
*1: Setings with bold weight meas the standard factory settings.
Page length for front tractor 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
Page length for rear tractor
Skip over perforation On, Off
Auto tear off On, Off
Auto line feed On, Off
Print direction Auto, Bi-d., Uni-d.
I/F mode Auto, Parallel, Optional
Auto I/F wait time 10 sec., 30 sec.
Software ESC-P2, IBM 2391 Plus
Character table Standard version / NLSP version: See Section 1.2 for
the character tables available.
PC437
International character set
for Italic table
Italic U.S.A., Italic France, Italic Germany, Italic U.K.,
Italic Denmark 1, Italic Sweden, Italic Italy, Italic Spain
1
0 slash On, Off
High speed draft On, Off
Input buffer On, Off
Buzzer On, Off
Auto CR (IBM 2391 Plus) On, Off
A. G. M. (IBM 2391 Plus) On, Off
Font *2
*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
OCR-B, Orator, Orator-S, Script C, Roman T,
Sans serif H
Roll paper On, Off

LQ-2080 Revision A
Product Description Operation Instruction 17
 Status code indicated by the LEDs
Table 1-9. Status Code Indicated by the LEDs
 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.
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
Pause Paper
Out TearOff / Bin Condensed Font
Pause On --- --- --- ---
Paper out error On On --- --- ---
Paper eject
warning On Blink --- --- ---
Head hot warning Blink --- --- --- ---
Micro Adjust Blink --- --- --- ---
Tear off --- --- --- --- ---
Bin selection --- --- --- --- ---
Condensed
selection --- --- --- --- ---
Font selection --- --- --- --- ---
Fatal error Blink Blink Blink Blink Blink

LQ-2080 Revision A
Product Description Operation Instruction 18
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)
Table 1-11. Initialization Area for EERPOM (2/2)
No. Item Factory setting
1 Character table selection PC437
2Page length (rear tractor) 11 inch
3 Page length (front tractor) 11 inch
4 Page length (CSF Bin 1) 22 inch
5 Page length (CSF Bin 2) 22 inch
6TOF adjustment value (rear tractor) 8.5 mm
7 TOF adjustment value (front tractor) 8.5 mm
8 TOF adjustment value (CSF Bin 1) 8.5 mm
9 TOF adjustment value (CSF Bin 2) 8.5 mm
10 TOF adjustment value
(rear manual insertion) 8.5 mm
11 TOF adjustment value
(front manual insertion) 8.5 mm
12 Bottom margin (rear tractor) 11 inch
13 Bottom margin (front tractor) 11 inch
14 Font selection Roman
15 Condensed Off
16 Print direction setting Bi-D
17 I/F mode selection Auto
18 Auto I/F wait time setting 10 sec
19 Auto line feed Off
20 Auto tear off Off
No. Item Factory setting
21 Skip over perforation Off
22 High speed draft On
23 Input buffer On
24 Software ESC/P2
25 0 slash Off
26 Buzzer On
27 Roll paper Off
28 Auto CR (IBM) Off
29 A. G. M. (IBM) Off
30 Tear-off adjustment value 0 clear
31 Other font selection Roman T
32 Bin select Friction Bin 1 or Tractor not Tear off
33 Manual insertion wait time 2 or 3 sec.
34 Tear-off wait time 3 sec.
35 Copy mode Off
36 Black paper mode Off
37 Paper width measure On
38 TOF minimum value 4.2 mm
39 I/F timing data BUSY
40 Paper edge length 0 clear
41 Page length (rear manual insertion) 22 inch
42 Page length (front manual insertion) 22 inch

LQ-2080 Revision A
Product Description Main Components 19
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

LQ-2080 Revision A
Product Description Main Components 20
1.5.1 C273 Main Board
Table 1-12. Relationship between Program ROM and CG
NOTE:"  " represents the version information.
Figure 1-2. C273 Main Board
Destination Program
ROM(IC10) CG ROM(IC6) Comments
Standard 8 M bit TDD21 None Standard Character is stored in the Program
ROM.
Europe 8 M bit TDD25 None Standard Character is
stored in the Program
ROM.
TAIWAN 4 M bit TDD27 32 M bit M320A19

A Program ROM and CG- ROM are completely
independent.
Korea 4 M bit TDD30 8 M bit M80C00

A Program ROM and CG-
ROM are completely
independent.
China 4 M bit TDD29 16 M bit M160B11

A Program ROM and CG- ROM are completely
independent.
H ead D rive
TRANSISTOR
CN2
IC 1 C P U
TM P96C 141
IC 3
GATE ARRAY
E05B 42
IC 10 P-R O M
IC 5
EEPROM
IC 7 P -R O M (n o t m o u n te d
)
CN15
CN14
CN1
IC 6 (C G -R O M )
CN10
IC 12 A2917
SLA 7024M
CN8
CN9
CN13
CN12
CN16
CN7
CN17
CN3
CN4
CN5
CN6
CN11
IC 8 (P S -R A M )