Epson LX300+_1170 Service Manual LX 1170

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SERVICE MANUAL

9-pin Serial Impact Dot Matrix Printer
LX-300+

EPSON LX-300+/1170

LX-1170

®
SEDM997003

Notice
o 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, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
o 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.
o The contents of this manual are subject to change without notice.
o 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.
o 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 © 2000 SEIKO EPSON CORPORATION.
Imaging & Information Product Division
TPCS Quality Assurance Center
TPCS Department

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.

WARNING

Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER
1.

ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURES.

NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS
TECHNICIANS IN THEIR LINE OF WORK.

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.

WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.

WARNING
1.

REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

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.

ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED
CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS,
WHEN ACCESSING INTERNAL COMPONENTS.

DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC
OR OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE
WARRANTY OFFERED BY EPSON.

About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. 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.

Manual Configuration
This manual consists of six chapters and Appendix.
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. TROUBLESHOOTING
Describes the step-by-step procedures for the
troubleshooting.
CHAPTER 4. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling
and assembling the product.
CHAPTER 5. ADJUSTMENT
Provides Epson-approved methods for adjustment.
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:
• Connector pin assignments
• Electric circuit boards components layout
• Electrical circuit boards schematics
• Exploded diagram & Parts List

Symbols Used in this Manual
Various symbols are used throughout this manual either to provide
additional information on a specific topic or to warn of possible danger
present during a procedure or an action. Be aware of all symbols when
they are used, and always read NOTE, CAUTION, or WARNING
messages.
A D J U S T M E N T
R E Q U IR E D

C A U T IO N

C H E C K
P O IN T

W A R N IN G

Indicates an operating or maintenance procedure, practice
or condition that is necessary to keep the product’s quality.
Indicates an operating or maintenance procedure, practice,
or condition that, if not strictly observed, could result in
damage to, or destruction of, equipment.
May indicate an operating or maintenance procedure,
practice or condition that is necessary to accomplish a task
efficiently. It may also provide additional information that is
related to a specific subject, or comment on the results
achieved through a previous action.
Indicates an operating or maintenance procedure, practice or
condition that, if not strictly observed, could result in injury or
loss of life.

Revision Status
Revision

Issued Date

May 11, 2000

First Release

April 5, 2001

Revision:
• Page -70
• Page -107
• Page -111
• Page -124

April 19, 2001

Revision:
• Page -117 “LX-1170 Exploded Diagrams” added.
• Page -121 “Parts list for LX-1170” added.

Description

“Warning and caution messages” added.
“EEPROM Address Map” added.
“Component Layout” added.
“C294MAIN-B Board” added.

CONTENTS
Chapter 1 PRODUCT DESCRIPTION
1.1 FEATURES ......................................................................................................... 9
1.2 SPECIFICATIONS ..........................................................................................
1.2.1 Printing Specification ................................................................................
1.2.2 Paper Feeding ............................................................................................
1.2.3 Electrical Specification ..............................................................................
1.2.4 Environmental Condition ...........................................................................
1.2.5 Reliability ..................................................................................................
1.2.6 Ribbon Cartridge .......................................................................................
1.2.7 Safety Approvals .......................................................................................
1.2.8 CE Marking ...............................................................................................
1.2.9 Printable Area ............................................................................................

10
10
14
16
16
16
16
17
17
18

1.3 Interface Specifications ....................................................................................
1.3.1 Parallel Interface (Forward Channel) ........................................................
1.3.2 Parallel Interface (Reverse Channel) .........................................................
1.3.3 Serial Interface ...........................................................................................
1.3.4 Interface Selection .....................................................................................
1.3.5 Prevention Hosts from Data Transfer Time-out ........................................
1.3.6 IEEE1284.4 protocol .................................................................................

21
21
23
24
25
25
25

1.4 Operation ...........................................................................................................
1.4.1 Control Panel .............................................................................................
1.4.1.1 Switches .............................................................................................
1.4.1.2 LED ...................................................................................................
1.4.1.3 Buzzer ................................................................................................
1.4.2 Functions ....................................................................................................
1.4.2.1 Usual Operation .................................................................................
1.4.2.2 Operation at Power-on .......................................................................
1.4.2.3 Default Setting ...................................................................................
1.4.2.4 Bi-d. Adjustment ...............................................................................
1.4.3 Errors .........................................................................................................

26
26
26
27
27
28
28
28
28
29
30

1.5 Control codes .................................................................................................... 31

1.5.1 ESC/P2 .......................................................................................................
1.5.2 IBM 2390 Plus Emulation .........................................................................
1.5.3 Bi-Directional Commands .........................................................................
1.5.3.1 Reply Printer Status ...........................................................................
1.5.3.2 Packet commands ..............................................................................

31
32
33
35
36

1.6 Initialization ...................................................................................................... 37
1.7 Paper Specifications ......................................................................................... 38
1.8 Physical Specifications ..................................................................................... 41
1.8.1 Physical Specifications for LX-300+ ........................................................ 41
1.8.2 Physical Specifications for LX-1170 ......................................................... 42
1.9 Accessories ........................................................................................................ 43

Chapter 2 Operating Principles
2.1 Overview ............................................................................................................ 45
2.2 Printer Mechanism ...........................................................................................
2.2.1 Printhead ....................................................................................................
2.2.1.1 Buzzer Function ................................................................................
2.2.2 Carriage Mechanism ..................................................................................
2.2.2.1 High speed skip method ....................................................................
2.2.3 Ribbon Mechanism ....................................................................................
2.2.3.1 Ink Ribbon Shifting Mechanism .......................................................
2.2.3.2 Color Ribbon Driving Mechanism (Option) .....................................
2.2.4 Platen Gap Adjustment Mechanism ..........................................................
2.2.5 Paper Feed Mechanism ..............................................................................
2.2.5.1 Page Length Measurement ................................................................
2.2.6 Release Mechanism ...................................................................................
2.2.7 Other Special Functions .............................................................................
2.2.7.1 Energy saving mode ..........................................................................
2.2.7.2 Quiet Mode ........................................................................................

46
47
47
48
50
50
50
50
52
53
54
55
55
55
55

2.3 Electrical Circuit Operating Principles .......................................................... 56
2.3.1 MAIN Board Electric Circuit .................................................................... 56

2.3.2 C294PSB / C294PSE Board ...................................................................... 58
2.3.2.1 Electric Circuit .................................................................................. 58

4.2.7.10 PF Motor Assembly Removal ......................................................... 86
4.2.7.11 Paper Feed Mechanism Disassembly .............................................. 87
4.2.7.12 Paper Guide Removal ...................................................................... 88

Chapter 3 Troubleshooting
3.1 Overview ............................................................................................................ 61
3.2 Troubleshooting ................................................................................................
3.2.1 Initialization Check ....................................................................................
3.2.2 Check Performance By Self-Check Function ............................................
3.2.2.1 Indicator LED ....................................................................................
3.2.3 Identify Problems From Symptoms ...........................................................
3.2.4 Unit and Parts Check .................................................................................
3.2.4.1 Printhead Check ................................................................................
3.2.4.2 Motor Check ......................................................................................
3.2.4.3 Sensor Check .....................................................................................
3.2.4.4 Printhead Driver Check .....................................................................

62
62
62
62
63
66
66
67
67
68

Chapter 5 Adjustment
5.1 Overview ............................................................................................................ 91
5.1.1 Platen Gap Adjustment .............................................................................. 91
5.1.2 Bi-D Adjustment ........................................................................................ 92

Chapter 6 Maintenance
6.1 Maintenance ...................................................................................................... 99
6.1.1 Cleaning ..................................................................................................... 99
6.1.2 Lubrication ................................................................................................. 99

Chapter 7 Appendix
Chapter 4 Disassembly and Assembly
4.1 Overview ............................................................................................................
4.1.1 Precautions .................................................................................................
4.1.2 Tools ..........................................................................................................
4.1.3 Service Checks After Repair .....................................................................

70
70
70
72

4.2 Disassembly and Assembly ..............................................................................
4.2.1 Printhead Removal .....................................................................................
4.2.2 Upper Housing Removal ...........................................................................
4.2.3 Printer Mechanism Removal .....................................................................
4.2.4 Board Assembly and Panel Removal ........................................................
4.2.5 C294MAIN/MAIN-B Board Assembly Removal .....................................
4.2.6 C294 Power Supply Board Assembly Removal ........................................
4.2.7 Printer Mechanism Disassembly ...............................................................
4.2.7.1 CR Motor Assembly Removal ..........................................................
4.2.7.2 Platen Removal ..................................................................................
4.2.7.3 Carriage Unit Removal ......................................................................
4.2.7.4 Ribbon Feed Mechanism Removal ...................................................
4.2.7.5 RPE Sensor Removal ........................................................................
4.2.7.6 BPE Sensor Removal ........................................................................
4.2.7.7 HP Sensor Removal ...........................................................................
4.2.7.8 PG Sensor Removal ...........................................................................
4.2.7.9 Release Lever Position Sensor Removal ...........................................

73
74
75
76
78
78
79
80
81
81
82
84
84
84
85
85
85

7.1 Connector Summary ...................................................................................... 104
7.1.1 Major Component Unit ............................................................................ 104
7.1.2 Pin Assignments ...................................................................................... 104
7.2 EEPROM Address Map ................................................................................ 107
7.3 Component Layout ......................................................................................... 111
7.4 Exploded Diagrams ........................................................................................ 115
7.5 Parts List ......................................................................................................... 119
7.6 Electric Circuit Schematics ........................................................................... 124

CHAPTER

1
PRODUCT DESCRIPTION

LX-300+/1170

Revision C

1.1 FEATURES
EPSON LX-300+/1170 is a 9 pin serial impact dot matrix printer. The main difference
between LX-300+ and LX-1170 is the wedth : 80 colums for LX-300+ and 136 colums for
LX-1170. The major features are shown as follows:

o Printing speed:

o Feeding method:

High speed draft
Draft
NLQ

1 original + 4 copies

o Control panel functions: Font, Pause, Tear off, LF/FF, Load/ Eject,

(rear)
(rear)
(rear)
(rear, bottom)

Micro Adjust, Self test, Data dump
and the default settings

Paper guide cover
Paper guide
Printer cover

Rear push tractor, CSF single-bin (Option),
Pull tractor (Option) and Roll paper holder (Option)

o Paper/ Media:

Single sheet, Continuous paper, Multi part paper,
Envelope, Label and Roll paper

o Fonts:

2NLQ and 1 Draft Bitmap typefaces
8 Barcode fonts

o Character tables:

Standard version
NLSP version

o Input buffer:

8 Kbytes

o Acoustic noise:

LX-300+/1170: 49 dB(A) (ISO 7779 pattern)
LX-1170:
55 dB(A) (ISO 7779 pattern) for India

o Reliability:

Total print volume

o Interface:

o Copy capability:

Paper supports

o Feeder:

LX-1170
Ribbon life

ESC/P and IBM 2380 Plus emulation

300 cps at 10 cpi
225 cps at 10 cpi
56 cps at 10 cpi

Friction feed
Push tractor feed
Push and Pull tractor feed
Pull tractor feed

MTBF
Printhead life
LX-300+:

o Control code:

Paper release lever

Knob
Control panel

13 tables
38 tables

Ribbon cartridge

12 million lines
(except printhead)
6000 POH (25% Duty)

Paper thickness
lever

Paper tension unit

Parallel interface
Tractor

400 million strokes/ wire(Black)
100 million strokes/wire(Color)
400 million strokes/ wire
3 million characters

Paper cord

Power switch

Figure 1-1. EPSON LX-300+/1170 Printer Parts

Bi-directional parallel interface
(IEEE-1284 nibble mode supported)
Serial I/F

PRODUCT DESCRIPTION

FEATURES

LX-300+/1170

Revision C

1.2 SPECIFICATIONS

Table 1-1. Print Speed and Printable Columns
Printing mode

1.2.1 Printing Specification

Draft condensed

o Print method:

Impact dot matrix

o Number of pins:

9 pins

o Print pin arrangement:

9x1

o Print pin diameter:

0.29 mm (0.0114 inch)

o Color (Option):

Black, Magenta, Cyan, Yellow

o Print direction:

Bi-direction with logic seeking

Draft emphasized

NLQ

o Print speed and printable columns:

Character pitch (cpi)

Printable columns

Printing speed (cps)

137(LX-300+)
233(LX-1170)

191

160(LX-300+)
273(LX-1170)

225

80(LX-300+)
136(LX-300+)

112

80(LX-300+)
136(LX-1170)

96(LX-300+)
163(LX-1170)

120(LX-300+)
204(LX-1170)

Table 1-1. Print Speed and Printable Columns
Printing mode
High speed draft

High speed draft
condensed

Draft

Character pitch (cpi)

Printable columns

Printing speed (cps)

80(LX-300+)
136(LX-1170)

300

137(LX-300+)
233(LX-1170)

96(LX-300+)
163(LX-1170)

337

160(LX-300+)
272(LX-1170)

120(LX-300+)
204(LX-1170)

337

137(LX-300+)
233(LX-1170)

321

160(LX-300+)
272(LX-1170)

300

80(LX-300+)
136(LX-1170)

225

96(LX-300+)
163(LX-1170)

270

120(LX-300+)
204(LX-1170)

225

PRODUCT DESCRIPTION

NOTE: When the power supply voltage drops to the lower limit, the printer
stops printing and then starts printing the rest on the line more slowly
than before.

o Resolution:
Table 1-2. Resolution
Horizontal density
(dpi)

Vertical density
(dpi)

Adjacent dot print

High speed draft

Draft

120

Draft condensed

240

Draft emphasized

120

Yes

Printing mode

SPECIFICATIONS

LX-300+/1170

Revision C
Table 1-2. Resolution

Printing mode
NLQ
Bit image

o Control code:

Horizontal density
(dpi)

Vertical density
(dpi)

Adjacent dot print

240

144

60, 72, 80, 90 or 120

Yes

120 or 240

ESC/P and IBM 2380 Plus emulation
(Refer to 1.5 "Control codes")

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

o Character tables:

o International character sets: 13 countries
U.S.A
U.K.
Italy
Norway
Latin America

n Standard version (13 character table)
Italic table
PC850 (Multilingual)
PC863 (Canadian-French)
PC861 (Icelandic)
Abicomp
ISO Latin 1
ISO 8859-15

PC437 (US, Standard Europe)
PC860 (Portuguese)
PC865 (Nordic)
BRASCII
Roman 8
PC858

Germany
Sweden
Japan
Spain 2

NOTE: The international and legal characters are the following 12 codes;
23H, 24H, 40H, 5BH, 5CH, 5DH, 5EH, 60H, 7BH, 7CH, 7DH,
7EH.

n NLSP version (38 character tables)
Italic table
PC850 (Multilingual)
PC853 (Turkish)
PC852 (East Europe)
PC866 (Russian)
PC869 (Greek)
Code MJK (CSFR)
ISO Latin 1T (Turkish)
PC 774 (LST 1283:1993)
ISO 8859-2
PC 866 UKR (Ukrania)
PC 861 (Icelandic)
PC APTEC (Arabic)
PC 720 (Arabic)
PC863 (Canadian-French)
BRASCII
ISO Latin 1
Hebrew 8*1
PC858
PC771 (Lithuania)

France
Denmark 1
Spain 1
Denmark 2

o Typeface

PC437 (US, Standard Europe)
PC437 Greek
PC855 (Cyrillic)
PC857 (Turkish)

n Bit map fonts:
EPSON Draft
EPSON Roman
EPSON Sans serif
EPSON OCR-B

MAZOWIA (Poland)
ISO 8859-7 (Latin / Greek)
Bulgaria (Bulgarian)
Estonia (Estonia)
PC 866 LAT. (Latvian)
PC860 (Portuguese)
PC865 (Nordic)
PC708 (Arabic)
PCAR864 (Arabic)
Abicomp
Roman 8
Hebrew 7*1
PC862 (Hebrew)*1
IAO8859-15

10cpi, 12cpi, 15cpi
10cpi, 12cpi, 15cpi, Proportional
10cpi, 12cpi, 15cpi, Proportional
10cpi*1

NOTE: *1: Do not describe in manual.

o Bar codes
EAN-13
UPC-A
Code 128
Industrial 2 of 5 *1

EAN-8
UPC-E
POSTNET
Matrix 2 of 5 *1

Interleaved 2 of 5
Code 39
Coda bar (NW-7)*1

NOTE: *1: Do not describe in manual.

NOTE: *1: This item is not displayed in a default setting mode. Do not
describe this in the manual.

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

o Character tables and typefaces:

Table 1-3. Character Tables and Typefaces
Character table

Table 1-3. Character Tables and Typefaces
Character table
Standard
Version

Italic table
PC 437 (US, Standard Europe)

PC 850 (Multilingual)
PC 860 (Portuguese)
PC 863(Canadian-French)
PC 865 (Nordic)
PC 861 (Icelandic)

BRASCII
Abicomp
Roman 8
ISO Latin 1
PC 858
ISO 8859-15

Bitmap font

NLSP
version

EPSON Draft
EPSON Roman
EPSON Sans serif
EPSON OCR-B
EPSON Draft
EPSON Roman
EPSON Sans serif

Bitmap font

Italic table
PC 437(US, Standard Europe)

EPSON Draft
EPSON Roman
EPSON Sans serif
EPSON OCR-B

PC 860(Portuguese)
PC 865(Nordic)
BRASCIl
Roman 8
PC437 (Greek)
PC 855 (Cyrillic)
PC 857 (Turkish)
PC 869 (Greek)
Code MJK (CSFR)
lSO Latin 1T (Turkish)
PC774 (LST 1283: 1993)
1SO 8859-2
PC 866 UKR (Ukrania)
PC 708 (Arabic)
PCAR864 (Arabic)
Hebrew 8*1
PC 858
PC771 (Lithuania)

EPSON Draft
EPSON Roman
EPSON Sans serif

PC 850 (Multilingual)
PC 861 (Icelandic)
PC863 (Canadian-French)
Abicomp
lSOLatin1
PC 853 (Turkish)
PC 852 (East Europe)
PC 866 (Russian)
MAZOWIA (Poland)
lSO 8859-7 (Latin/Greek)
Bulgaria (Bulgarian)
Estonia (Estonia)
PC 866 LAT. (Latvian)
PC APTEC (Arabic)
PC 720 (Arabic)
Hebrew7*1
PC862 (Hebrew)*1
ISO 8859-15

NOTE: ESC R command is effective on all the character tables.
NOTE: *1: These items are not displayed in the default setting mode. Do not
describe in the manual.

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

1.2.2 Paper Feeding
o Feeding method:

Table 1-4. Release Lever
Lever position

Friction feed (rear)
Push tractor feed (rear)
Push and Pull tractor feed (rear)
Pull tractor feed (rear, bottom)

Tractor

o Feeder:

Rear push tractor, CSF single-bin (Option),
Pull tractor (Option) and Roll paper holder (Option)

o Paper path:

Manual insertion
CSF
Push Tractor
Pull Tractor

o Line spacing:

o Feed speed:

Rear in, top out
Rear in, top out
Rear in, top out
Rear or bottom in, top out

4.23mm (1/6 inch) or programmable in increments of ;
LX-300+: 0.118mm(1/216 inch)
LX-1170: 0.059mm(1/432 inch)
4.23mm (1/6 inch feed)
LX-300+
LX-1170
Continuous feed

o Input Data Buffer:

88msec
63msec
0.76MPS (m/sec)
[3.0 IPS (inches/sec)]

8 Kbyte

Manual insertion (rear)

Roll paper holder feed (rear)

Roll paper

PRODUCT DESCRIPTION

Continuous paper (Single sheet and
Multi part)

Pull tractor feed (rear)

Continuous paper (Single sheet and
Multi part)

Pull tractor feed (bottom)

Continuous paper (Single sheet and
Multi part)
Labels

SPECIFICATIONS

LX-1170

Paper thickness
(inch)

Min.

Max.

Paper
thickness
(mm)

-1

(0.0024)

(0.0071)

over 0.06
up to 0.18

(0.0024)

(0.0071)

over 0.06
up to 0.18

(0.0071)

(0.0102)

over 0.18
up to 0.26

(0.0102)

(0.0130)

over 0.26
up to 0.33

(0.0071)

(0.0102)

over 0.18
up to 0.26

(0.0130)

(0.0154)

over 0.33
up to 0.39

Lever
position

Cut sheet (Single sheet and Multi part)
Envelop
Cut sheet (Single sheet)

Push and Pull tractor feed (rear)

LX-300+

Paper/ Media

CSF single-bin

Continuous paper (Single sheet and
Multi part)

Table 1-5. Paper Thickness Lever

Table 1-4. Release Lever

Friction

Push tractor feed (rear)

The paper thickness lever must be set at the proper position as shown below.

The release lever must be set according to the following table;

Paper path/ Feeder

Paper/ Media

o Paper thickness lever:

o Release lever:

Lever position

Paper path/ Feeder

Min.

Max.

Paper
thickness
(mm)

LX-300+/1170

Revision C
Table 1-5. Paper Thickness Lever
LX-300+

Lever
position

LX-1170

Paper thickness
(inch)
Min.

Max.

(0.0154)

(0.0205)

Paper
thickness
(mm)

Paper thickness
(inch)

Paper
thickness
(mm)

Min.

Max.

over 0.39
up to 0.52

(0.0102)

(0.0130)

over 0.26
up to 0.33

(0.0130)

(0.0154)

over 0.33
up to 0.39

(0.0154)

(0.0205)

over 0.39
up to 0.52

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

1.2.3 Electrical Specification

1.2.4 Environmental Condition

o 120 V version

o Temperature:

5 to 35 °C (operating*1)
15 to 25 °C (operating*1,*2)
-30 to 60 °C (non-operating)

o Humidity:

10 to 80% RH (operating*1)
30 to 60% RH (operating*1,*2)
0 to 85% RH (non-operating*1)

o Resistance to shock:

1 G, within 1ms (operating)
2 G, within 2ms (non-operating*3)

o Resistance to vibration:

0.25 G, 10 to 55 Hz (operating)
0.50 G, 10 to 55 Hz (non-operating*3)

n Rated voltage:

AC 120V

n Input voltage range:

AC 99 to 132 V

n Rated frequency range:

50 to 60 Hz

n Input frequency range:

49.5 to 60.5 Hz

n Rated current:

0.6A (max. 1.4A)

n Power consumption:

Approx. 23W (ISO/IEC 10561 Letter pattern)

Insulation resistance:10MΩ min.
(between AC line and chassis, DC 500V)

n Dielectric strength:

AC 1000 Vrms. 1 min. or
AC 1200 Vrms. 1 sec.
(between AC line and chassis)

*1: without condensation
*2: during printing on reclaimed paper, multi part paper, envelop, label or
roll paper.
*3: without shipment container

o 230 V version
n Rated voltage range:

AC 220 to 240 V

1.2.5 Reliability

n Input voltage range:

AC 198 to 264 V

o Total print volume:

12 million lines (except printhead)

n Rated frequency range:

50 to 60 Hz

o MTBF:

6000 POH(25% Duty)

n Input frequency range:

49.5 to 60.5 Hz

o Printhead life:

n Rated current:

400 million strokes / wire (Black)
100 million strokes / wire (Color)

0.3 A (max. 0.7A)

n Power consumption:

Approx. 23W (ISO/IEC10561 Letter pattern)
Energy Star Complaint

n Insulation resistance:

10MΩ min.
(between AC line and chassis, DC 500V)

n Dielectric strength:

AC 1500 Vrms. 1 min.
(between AC line and chassis)

LX-300+

1.2.6 Ribbon Cartridge
o Type:
Color:
Ribbon life:

o Type:
Color:
Ribbon life:

PRODUCT DESCRIPTION

Fabric
Black
3 million characters
(Draft 10 cpi, 14 dots/character)
Fabric
Black, Magenta, Cyan and Yellow

n Black

1 million characters (Draft 10 cpi, 14 dots/character)

n Magenta

0.7 million characters (Draft 10 cpi, 14 dots/character)

SPECIFICATIONS

LX-300+/1170

Revision C

n Cyan

0.7 million characters (Draft 10 cpi, 14 dots/character)

n Yellow

0.5 million characters (Draft 10 cpi, 14 dots/character)

1.2.7 Safety Approvals
o 120 V version
n Safety standards:

UL1950
CSA C22.2 No. 950

n EMI:

FCC part15 subpart B class B
CSA C108.8 class B

o 230 V version
n Safety standards:

EN60950

n EMI:

EN55022 (CISPR pub.22) class B
AS/NZS 3548 class B

1.2.8 CE Marking
230 V & UPS version:

n Low voltage directive 73/23/EEC:

EN60950

n EMC Directive 89/336/EEC:

EN55022 class B
EN61000-3-2
EN61000-3-3
EN50082-1
IEC801-2
IEC801-3
IEC801-4
EN55024

LX-300+ only:

LX-1170 only:

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

1.2.9 Printable Area

Table 1-6. Printable Area for Cut Sheet

o Cut sheets

Single Sheet

Multi Part

PW (Width)

Refer to 1.7 "Paper
Specifications"

PL (Length)

Refer to 1.7 "Paper
Specifications"

LM (Left Margin)

LX-300+:
3 mm or more (PW<=229 mm)
24mm or more(PW=257 mm)
LX-1170:
3 mm or more (PW<=364 mm)
29mm or more(PW=420 mm)

RM (Right Margin)

LX-300+:
3 mm or more (PW<=229 mm)
24mm or more(PW=257 mm)
LX-1170:
3 mm or more (PW<=364 mm)
29mm or more(PW=420 mm)

TM (Top Margin)

4.2 mm or more

BM (Bottom Margin)

4.2 mm or more

P r in ta b le A r e a

NOTE: The maximum horizontal printable area is 203.2mm for LX-300+/
345.44 for LX-1170.

Figure 1-2. Printable Area for Cut Sheet

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

o Envelop

o Continuous paper
R M

L M

T M
P e r fo r a tio n

P r in ta b le A r e a

P r in ta b le A r e a
B M

P e r fo r a tio n

Figure 1-3. Printable Area for Envelop
Figure 1-4. Printable Area for Continuous Paper
Table 1-7. Printable Area for Envelop
Table 1-8. Printable Area for Continuous Paper

Envelope Printable Area

Continuous Paper

PW (Width)

Refer to 1.7 "Paper Specifications"

PL (Length)

Refer to 1.7 "Paper Specifications"

PW (Width)

Refer to 1.7 "Paper Specifications"

LM (Left Margin)

3 mm or more

PL (Length)

Refer to 1.7 "Paper Specifications"

RM (Right Margin)

3 mm or more

LM (Left Margin)

TM (Top Margin)

4.2 mm or more

BM (Bottom
Margin)

4.2 mm or more

LX-300+:
13 mm or more (PW<=254 mm)
24mm or more(PW=254 mm)
LX-1170:
13 mm or more (PW<=377.8mm)
18 mm or more(PW=406.4 mm)

NOTE: The maximum horizontal printable area is 203.2mm.

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

Table 1-8. Printable Area for Continuous Paper

o Roll paper

Continuous Paper
RM (Right Margin)

P W

LX-300+:
13 mm or more (PW<=254 mm)
24mm or more(PW=254 mm)
LX-1170:
13 mm or more (PW<=377.8mm)
18 mm or more(PW=406.4 mm)

TM (Top Margin)

4.2 mm or more

BM (Bottom Margin)

4.2 mm or more

L M

B M
T M

NOTE: The maximum horizontal printable area is 203.2mm for LX-300+/
345.44 for LX-1170.

P r in ta b le A r e a

B M

Figure 1-5. Printable Area for Roll Paper
Table 1-9. Printable Area for Roll Paper
Continuous Paper
PW (Width)

Refer to 1.7 "Paper Specifications"

PL (Length)

Refer to 1.7 "Paper Specifications"

LM (Left Margin)

3 mm or more

RM (Right Margin)

3 mm or more

TM (Top Margin)

4.2 mm or more

BM (Bottom Margin)

4.2 mm or more

NOTE: The maximum horizontal printable area is 203.2mm.

PRODUCT DESCRIPTION

SPECIFICATIONS

LX-300+/1170

Revision C

1.3 Interface Specifications
LX-300+/1170 provides bi-directional 8 bit parallel interface and serial interface. Optional
interface board is not supported on this model.

1.3.1 Parallel Interface (Forward Channel)
o Transmission mode:

8 bit parallel
IEEE-1284 compatibility mode

o Adaptable connector:

57-30360 (Amphenol) or equivalent

o Synchronization:

-STROBE pulse

o Handshaking:

BUSY and -ACKLG signals

o Signal level:

TTL compatible
(IEEE-1284 level 1 device)

Figure 1-6. Data Transmitting Timing

Table 1-10. Parameter

Table 1-11. Maximum & Minimum Timings for Data Transmission

Parameter

Minimum

Maximum

Condition

VOH*

5.5V

VOL*

-0.5V

IOH*

0.32mA

VOH=2.4V

IOL*

12mA

VOL=2.4V

50pF

VIH

2.0V

VIL

0.8V

IIH

0.32mA

VIH=2.0V

IIL

12mA

VIL=0.8V

50pF

NOTE: * Logic-H signal is 2.0V or lower when the printer is off and the signal
is 3.0V or higher when the printer is on. The receiver has impedance
which is equivalent to 7.5 kΩ.

PRODUCT DESCRIPTION

Parameter

Minimum

Maximum

tsetup

500 nsec

thold

500 nsec

tstb

500 nsec

tready

tbusy

500 nsec

treply

tack

500 nsec

10 us

tnbusy

tnext

ttout*

120 nsec

ttin**

200 nsec

NOTE: * Rise and fall time of output signals.
** Rise and fall time of input signals.

Interface Specifications

LX-300+/1170

Revision C

o BUSY signal is active (HIGH level) under the conditions below:

Table 1-12. Connector Pin Assignment and Signals (Forward Channel)

n In the process of receiving data
Pin No.

n In the condition of being input buffer full

Signal
Name

Return
GND
Pin

In/Out

Functional Description

n In the condition of being -INT signal active (low level)

DATA7

bit6

n During hardware initialization

DATA8

bit7:MSB

-ACKNLG

Out

This signal (negative pulse) indicates that the
printer has received data and is ready to accept
next one.

BUSY

Out

This signal’s high level means that the print is
not ready to accept data.

Out

This signal’s high level means that the printer is
in a state of paper-out error.

SLCT

Out

Always at high level when the printer is
powered on.

-AFXT

Not used.

-INIT

This signal’s negative pulse initializes printer.

-ERROR

Out

This signal’s low level means the printer is in a
state of error.

-SLIN

Logic H

Out

This line is pulled up to +5V through
3.9 kΩ resister.

+5V

Out

This line is pulled up tp +5V through
1.0 kΩ resister.

Chassis

Chassis GND.

16, 33,
19-30

GND

Signal GND.

15, 34

Not connected.

n In the condition of being -ERROR or PE signal is active (low level, high level,
respectively)

n In the self test mode
n In the adjustment mode
n In the default-setting mode
o -ERROR signal is active (low level) under the conditions below:
n In the condition of a paper-out error
n In the condition of a release lever error
o PE signal is active (high level) under the condition below:
n In the condition of a paper-out error
Table 1-12. Connector Pin Assignment and Signals (Forward Channel)
Pin No.

Signal
Name

Return
GND
Pin

In/Out

Functional Description
Strobe pulse. Input data is latched at falling
edge of the signal.

-STROBE

DATA1

DATA2

bit1

DATA3

bit2

DATA4

bit3

DATA5

bit4

DATA6

bit5

PRODUCT DESCRIPTION

Parallel input data to the printer.
bit0:LSB

Not used.

NOTE: In/Out shows the direction of signal flow from the printer’s point of view.

Interface Specifications

LX-300+/1170

Revision C

1.3.2 Parallel Interface (Reverse Channel)
o Transmission mode:

Table 1-13. Connector Pin Assignment and Signals (Reverse Channel)

IEEE-1284 nibble mode

o Adaptable connector:

See 1.3.1 "Parallel Interface (Forward Channel)"

o Synchronization:

Refer to the IEEE-1284 specification

o Handshaking:

Refer to the IEEE-1284 specification

o Signal level:

IEEE-1284 level 1 device
See 1.3.1 "Parallel Interface (Forward Channel)"

o Data transmission timing:

Refer to the IEEE-1284 specification

o Extensibility request:

The printer responds to the extensibility request
affirmatively, when the request is 00H or 004H, which means;
00H: Request for nibble mode of reverse channel transfer
04H: Request device ID in nibble mode of reverse channel transfer

o Device ID: The printer sends following device ID string when it is requested.
n When IEEE1284.4 is enabled;
[00H][4EH]
MFG: EPSON;
CMD: ESCPL2,PRPXL24,BDC,D4;
MDL: LX-300+;
CLS: PRINTER;
DES: EPSON[SP]LX-300+;
LX-300+

[00H][4EH]
MFG: EPSON;
CMD: ESCP9,PRPII9,BDC,D4;
MDL: LX-1170;
CLS: PRINTER;
DES: EPSON[SP]LX-1170;
LX-1170

n When IEEE1284.4 is disabled;
[00H][4BH]
MFG: EPSON;
CMD: ESCPL2,PRPXL24,BDC;
MDL: LX-300+;
CLS: PRINTER;
DES: EPSON[SP]LX-1170;
LX-300+

PRODUCT DESCRIPTION

[00H][4BH]
MFG: EPSON;
CMD: ESCP9,PRPII9,BDC;
MDL: LX-1170;
CLS: PRINTER;
DES: EPSON[SP]LX-1170;
LX-1170

Pin No.

Signal Name

Return
GND
Pin

In/Out

Functional Description

HostClk

Host clock signal.

DATA1

Parallel input data to the printer.
bit0:LSB

DATA2

bit1

DATA3

bit2

DATA4

bit3

DATA5

bit4

DATA6

bit5

DATA7

bit6

DATA8

bit7:MSB

PtrClk

Out

Printer clock signal.

PtrBusy/DataBit3,7

Out

Printer busy signal and reverse channel
transfer data bit 3 or 7.

AckDataReq/
DataBit-2,6

Out

Acknowledge data request signal and
reverse channel transfer data bit 2 or 6.

Xflag/
DataBit-1,5

Out

X-flag signal and reverse channel
transfer data bit 1 or 5.

HostBusy

Host busy signal.

-INIT

Not used.

-DataAvail/
DataBit-0,4

Out

1284-Active

Logic-H

Out

This line is pulled up to +5V through 3.9
kΩ resister.

+5V

Out

This line is pulled up tp +5V through 1.0
kΩ resister.

Interface Specifications

Data available signal and reverse channel
transfer data bit 0 or 4.
1284 active signal.

LX-300+/1170

Revision C

Table 1-13. Connector Pin Assignment and Signals (Reverse Channel)
Pin No.

Signal Name

Return
GND
Pin

In/Out

Chassis

16, 33,
19-30

GND

15, 34

Pin
No.

Functional Description
Chassis GND.
Signal GND.
Not connected.

1.3.3 Serial Interface
o Synchronization:

Asynchronous

o Signal level:

EIA-232D
MARK (logical 1):
SPACE (logical 0):

o Word length:

Start bit:
Data bit:
Data bit:
Parity bit:
Stop bit:

Table 1-14. Connector Pin Assignment and Signals

-3V to -25V
+3V to +25V

Signal Name

In/Out

Functional Description

TXD

Out

Transmit data.

DTR

Out

Indicates that the printer is ready to receive data or not.

REV

Out

Connected directly to the DTR signal.

RTS

Out

Request to send. Always SPACE level when the printer
is powered on. Pulled up to +12V via 4.7KΩ resistor.

RXD

Receive data.

Signal GND

Chassis GND

other

Not used. Not connected.

* In/Out shows the direction of signal flow from the printer’s point of view.

1 bit
8 bit (LX-300+ only)
8 bit, 7 bit (LX-300+/1170)
Odd, Even, Non, Ignore
1 bit or more

o Baud rate:

300, 600, 1200, 2400, 4800, 9600 or 19200 bps

o Handshaking:

DTR signal and XON/XOFF
DTR=MAEK, XOFF:indicates that the printer cannot
receive data.
DTR=MARK, XON: indicates that the printer is ready
to receive data.

NOTE: The DTR signal is MARK and XOFF code (DC3, 13H) is transmitted
when the rest of the input buffer becomes 256 bytes. The DTR signal is
SPACE and XON code (DC1, 11H) is transmitted when the rest of the
input buffer is regained 256 byte.

o Error handling:

Parity error is only detected. Overrun error and
framing error are ignored.

o Connector:

25 pin subminiature D-shell connector (female)

PRODUCT DESCRIPTION

Interface Specifications

LX-300+/1170

Revision C
o Auto:

1.3.4 Interface Selection
The printer has 2 interfaces; the parallel interface and serial interface. These interfaces are
selected manually by Default Setting or selected automatically.

o Manual Selection

Communication is carried out in the conventional mode until a magic string
(1284.4 synchronous commands) is received. By receiving a magic string,
communication in IEEE1284.4 packet mode is started.

o Off:

One of 2 interfaces can be selected by Default setting.

Communication is carried out in the conventional mode. A magic string (284.4
synchronous commands) is discarded.

o Automatic Selection
The automatic interface selection is enabled by Default Setting. In this automatic
interface selection mode, the printer is initialized to the idle state scanning which
interface receives data when it is powered on. Then the interface that receives data
first is selected. When the host stops data transfer and the printer is in stand-by
state for the seconds specified by Default Setting, the printer is returned to the idle
state. As long as the host sends data or the printer interface is in busy state, the
selected interface is let as it is.

o Interface State and Interface Selection

NOTE: The packet protocol of IEEE1284.4 allows a device to carry on multiple
exchanges or conversations which contain data and/or control
information with another device at the same time across a single pointto-point link.
The protocol is not, however, a device control language. It does provide
basic transport-level flow control and multiplexing services.
The multiplexed logical channels are independent of each and blocking
of one has no effect on the others. The protocol operates over IEEE1284.

When the parallel interface is not selected, the interface gets into a busy state.
When the serial interface is not selected, the interface sends XOFF and sets the
DTR signal MARK. When the printer is initialized or returned to the idle state, the
parallel interface got into a ready state, the serial interface sends XON and sets the
DTR SPACE. Caution that the interrupt signal such as a -INIT signal on the
parallel interface is not effective while that interface is not selected.

1.3.5 Prevention Hosts from Data Transfer Time-out
Generally, hosts abandons data transfer to peripherals when a peripheral is in busy state for
dozens of seconds continuously. To prevent hosts from this kind of time-out, the printer
receives data very slowly, several bytes per minute, even if the printer is in busy state. This
slowdown is started when the rest of the input buffer becomes several hundreds of bytes. At
last, when the input buffer is full, the printer is in busy state continuously.

1.3.6 IEEE1284.4 protocol
The packet protocol described by IEEE1284.4 is supported on the parallel I/F.
Two function modes of IEEE1284.4 protocol, “Off” and “Auto” are available, and one of
them is selected according to the value of Default setting. (See 1.4.2.3 "Default Setting")

PRODUCT DESCRIPTION

Interface Specifications

LX-300+/1170

Revision C

1.4.1.1 Switches

1.4 Operation

o Operation in normal mode
In normal mode, pressing panel switches executes following function;

1.4.1 Control Panel

Table 1-15. Operation in Normal Mode

4 switches and 4 LEDs are on the panel as shown below.

Tear Off

LF/FF

Load/Eject

Paper Out

Switch

Function

Pause

-Alternates printing and non-printing status.
-Enables Micro Adjustment function and Font selection, holding it down for 3
seconds.

Load/Eject

-Loads or ejects paper.
-Execute micro feed forward when this function is enabled.

LF/FF

-Executes line feed by pressing it shortly.
-Executes form feed byholding it down for a few seconds.
-Executes micro feed backwardwhen this function is enabled.

Tear Off

-Advances continuous paper to the Tear-off position.
-Select fontwhen this function is enabled.

Pause
Draft
Draft Condensed
Roman
Roman Condensed

Font

Micro Adjust

3 sec

Sans serif
Sans serif Condensed

: LED On

: LED Blinks

: LED Off

o Operation at power on
Turning the printer on while pressing panel switches executes the functions below;

Figure 1-7. Control Panel

Table 1-16. Operation at Power On

PRODUCT DESCRIPTION

Switch

Function

Load/Eject

NLQ self test

LF/FF

Draft self test

Tear Off

Default setting

Load/Eject & LF/FF

Data dump

Load/Eject & LF/FF & Pause

Clear EEPROM

Tear Off & Load/Eject & LF/FF

Clear EEPROM for Diving Line count for ribbon change
timing.

Pause

Bi-d adjustment

The others

Not available

Operation

LX-300+/1170

Revision C

o Operation in default setting mode

*3 Font (Green)
-The status of Font selection is displayed by 2 Font LEDs when continuous paper is out
of the Tear-off position.
-Both LEDs blink when continuous paper is in the Tear-off position.
n¨: Draft
n«: Draft Condensed
¨n: Roman
¨¨: Roman Condensed
¨«: Sans serif
«n: Sans serif Condensed
««: Tear Off
(¨: LED On, n: LED Off, «: LED Blinks)

The following switches are used in default setting mode;

Table 1-17. Operation at Power On
Switch

Function

Tear Off

Changes the setting.

LF/FF

Selects the Menu.

The others

Not available.

1.4.1.2 LED
o Indication in normal mode

1.4.1.3 Buzzer

Table 1-18. Indication in normal mode
LED
Pause*1
Printer Status

Paper
Out*2

Font

Pause

---

Paper out error

---

Release lever error

---

Paper eject warning

Blink

---

Blink

---

Tear off

---

Font selection

---

Blink

Micro Adjust

Fatal error

o Paper out error:

Beeper sounds (...)*

o Release lever operation:

Beeper sounds(-----)*

o Illegal panel operation:

Beeper sounds (.)*

*The description (.) and (-) in the above shows how the beeper sounds.
(.): Beeper sounds approx. 100ms and interval is approx. 100ms.
(-): Beeper sounds approx. 500ms and interval is approx. 100ms.

*1 Pause (Orange)
-It is on when the printer is paused, and it is off when the printer is not paused.
-It blinks when Micro Adjust is enabled.
*2 Paper Out (Red)
-It is on when the printer is in the Paper out status, and it is off when the printer is out
of this status.

PRODUCT DESCRIPTION

Operation

LX-300+/1170

Revision C
o Data Dump

1.4.2 Functions

Starts the data dump mode, in which all the input data are printed as hexadecimal
numbers and corresponding characters.

1.4.2.1 Usual Operation

o Clear EEPROM

o Pause

Resets the printer to the factory default setting, which is not always proper setting
for each market demand.
(i.e. This function is for emergency.)
Clear Areal EEPROM data except 00H to 1FH.

-This switch alternates printer activity between printing and non-printing.
-By holding it down over 3 seconds when the printer is in the stand by state, the
Micro Adjust function is enabled. By pressing it again, this function is disabled.

o Load/Eject
-Pressing it loads out sheet or continuous paper when the printer is out of paper.
-Pressing it ejects out sheet to the stacker or continuous paper to the paper park.

o Clear EEPROM for Driving Line count for ribbon change timing.
Resets the diving Line count for ribbon change timing.

o Bi-d adjustment

o LF/FF
-Pressing it shortly executes line feed.
-Holding it down for a few seconds executes form feed when continuous paper is
used, or ejects cut sheet to the stacker when cut sheet is used.

o Tear Off
-When continuous paper is used, pressing it moves a page to the Tear-off position.
And pressing it again moves a next page to the TOF position.

o Font
-Pressing it selects one of the following fonts when Micro Adjust is enabled;
Draft, Draft Condensed, Roman, Roman Condensed, Sans serif, Sans serif
Condensed

Starts the Bi-d adjustment mode. See 1.4.2.4 "Bi-d. Adjustment".

o Demonstration
Not available.

1.4.2.3 Default Setting
There are some parameters that can be changed by users and will be referred at the time of
initialization of the printer.

o Setting mode
1.

Enters the Default setting mode.
The method of selecting language for “Usage of this mode” is printed.

Select language for “Usage of this mode” by LF/FF button.
Font LEDs show the language for “Usage of this mode” that is currently selected.
This section will be advanced one by one as the button is pressed and the On/Off/
Blink/2-Blink of those three LEDs will also be changed according to the selection.

Press Tear Off button.
The current setting and the “Usage of this mode” by selected language will be printed
on the paper set in the paper path at that time.

Select Menu by Tear Off button.
Font LEDs show the menu which is selected at that time. The selection will be
advanced one by one as the button is pressed and the combination of those three LEDs
status of On/Off/Blink/2-Blinks will be changed according to the selection.

o Micro Adjust

-Micro Adjust ↓ / ↑ switches is effective when the Micro Adjust function is
enabled by Pause switch.
-Pressing the Micro Adjust ↓ / ↑ switches executes micro feed backward and
forward by 0.118 mm (1/216 inch).
-The TOF adjustment is enabled in the TOF position after loading, and the Tearoff adjustment is enabled in the Tear-off position.

1.4.2.2 Operation at Power-on
o Self test
Prints the self test pattern. To cancel it, make printer pause and turn off the power.

o Default setting
Starts the default setting mode. See 1.4.2.3 "Default Setting".

PRODUCT DESCRIPTION

Operation

LX-300+/1170
5.

Revision C

Select setting value by LF/FF button.
Tear Off/ Bin LEDs and Paper Out LED show that menu’s value by status of On/Off/
Blink/2-Blinks. That value can be changed by pressing Tear Off/ Bin button and the
LEDs status of On/Off/Blink/2-Blinks will be changed as the button is pressed.

When LF/FF button is pressed, the printer memorize the last setting value.

Repeat (4) to (6).
The other items can be changed in the same manner.
The menu selection will return to the first menu after the last menu selection is over.

Table 1-19. Setting Menu
Item

Setting / Value *2

Character table

Software version
Italic, PC437, PC850, PC860, PC863, PC865, PC861,
BARASCII, Abicomp, Roman8, ISO Latin 1, PC858, ISO
8859-15
NLSP version
Italic, PC437, PC850, PC437, Greek, PC853, PC855,
PC852, PC857, PC864, PC866, PC869, MAZOWIA, Code
MJK, ISO 8859-7, ISO Latin 1T, Bulgaria, PC774, Estonia,
ISO 8859-2, PC 866 LAT., PC 866UKR, PC APTEC,
PC708, PC720, PCAR 864, PC860, PC865, PC861, PC863,
BRASCII, Abicomp, Roman8, ISO Latin 1, PC858, ISO
8859-15, PC771

Turn the printer off.
The setting is stored into non-volatile memory.

Table 1-19. Setting Menu
Item

Setting / Value *2

Page length for 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

Skip over perforation

OFF, ON

Auto tear off

OFF, ON

Auto line feed

OFF, ON

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

Manual feed wait time

1 second, 1.5 seconds, 2 seconds, 3 seconds

Buzzer

OFF, ON

Auto CR (IBM 2380 Plus)*1
IBM character table
Print direction

Bi-d., Uni-d., Auto

Software

ESC/P2, IBM 2390 Plus

0 slash

OFF, ON

High speed draft

OFF, ON

I/F mode

Auto, Parallel, Option

Auto I/F wait time

10 seconds, 30 seconds

Baud rate

19200BPS, 9600BPS, 4800BPS, 2400BPS, 1200BPS,
600BPS, 300BPS

Parity

None, Odd, Even, Ignore

Data length

8 bit, 7 bit

Parallel I/F bidirectional mode

OFF, ON

Packet mode

Auto, OFF

PRODUCT DESCRIPTION

OFF, ON
Table2, Table1

NOTE: *1: This setting is effective when IBM 2380 Plus emulation is selected.
NOTE: Setting with underline mean the standard factory settings.
NOTE: After W1xxxx Version.

1.4.2.4 Bi-d. Adjustment
Bi-d. adjustment can be adjusted by users. Bi-d. adjustment method is as follows.
1.

Turning the printer on while pressing Pause switch. The guide to adjust Bi-d alignment
in this mode and the first alignment pattern will be printed.

Select the most closely aligned number by pressing LF/FF (↓) and Load/Eject (↑)
switches.
Font LEDs and Pause LED show the pattern number which is selected at that time. The
selection is advanced one by one as the switch is pressed, and the combination of On/
Off/Blink of those three LEDs is also changed according to the selection.

Operation

LX-300+/1170
3.

Fix the selected number by pressing Tear Off switch.
Selected number is fixed and the next alignment pattern is printed.

Repeat step 2 to 3 until finishing Bi-d adjustment for NLQ mode.
Following adjustment is executed.
- Bi-d. adjustment for high speed draft mode
- Bi-d. adjustment for draft mode
- Bi-d. adjustment for NLQ mode

Turn the printer off.
The setting is stored into non-volatile memory.

Revision C

1.4.3 Errors
o Paper out error:
When the printer fails to feed a sheet, it goes a paper out error.

o Release lever error:
When release lever position is wrong, it goes a release lever error.

o Fatal errors:
Carriage control error and Power supply voltage error.

PRODUCT DESCRIPTION

Operation

LX-300+/1170

Revision C

1.5 Control codes

Table 1-20. ESC/P2

1.5.1 ESC/P2

Classification

Operation

Command

Font enhancement

Double-Width

ESC W, DC4, SO

Condensed

DC2, SI

Double-height

ESC w

Double-Strike

ESC G, ESC H

Super-/ Subscript

ESC T, ESC S

Underline

ESC-

Spacing

Intercharacter Space

ESC Space

Character handling

Character Table

ESC t, ESC (t

International Character

ESC R

User-Defined Characters

ESC%, ESC &, ESC:

Table 1-20. ESC/P2
Classification

Operation

Command

General Operation

Initialize Printer

ESC@

Unidirectional Printing

ESC U

CSF Mode Control

ESC EM

Form Feed

Line Feed

Line Spacing

ESC 0, ESC 1, ESC 2, ESC3,
ESC A

Carriage Return

Control code selection

ESC1

Page Length

ESC C, ESC C0, ESC (C

Upper Control Codes

ESC6, ESC7

Left / Right Margin

ESC Q, ESC1

8 pin Bit Image

Top / Bottom Margin

ESC N, ESC O, ESC (c

ESC K, ESC L, ESC Y, ESC Z,
ESC*

Define Unit

ESC (U

9 pin Bit Image

ESC ^

Horizontal Print Position

ESC$, ESC¥

Printing color

Select color

ESC r

Vertical Print Position

ESC (V, ESC (v

Bar code

ESC (B

Tab Horizontally

ESC D, HT

Production

EEPOM write, etc.

ESC|

Tab Vertically

ESC B, VT

Advance paper

ESC J

Typeface

ESC k, ESC x, ESC y

Pitch

ESC P, ESC M, ESC g, ESC p

Italic Font

ESC 4, ESC 5

Bold Font

ESC E, ESC F

Master Select

ESC!

Paper feeding

Page format

Print position motion

Font selection

PRODUCT DESCRIPTION

Bit image

Control codes

LX-300+/1170

Revision C

1.5.2 IBM 2390 Plus Emulation

Table 1-21. IBM 2390 Plus emulation

Table 1-21. IBM 2390 Plus emulation
Classification

Operation

Command

General Operation

Nop

NUL, DC3

Off Line

ESC j

Buzzer

BEL

Cancellation

CAN

Select / Deselect

DC1, ESC Q

Initialize Printer

ESC [K

Unidirectional Printing

ESC U

Select Auto Sheet Feeder

ESC [F

Form Feed

Line Feed,
Auto Line Feed

LF, ESC5

Line Spacing

ESC A, ESC 0, ESC 1, ESC 2,
ESC3

Carriage Return

Reverse Line Feed

ESC]

Page Length

ESC C, ESC C0

Left / Right Margin

ESC X

Skip Over Perforation

ESC N, ESC O

Set TOF

ESC 4

Horizontal Print Position

ESC d

Initialize Tab Position

ESC R

Tab Horizontally

ESC D, HT

Tab Vertically

ESC B, VT

Advance paper

ESC J

Paper feeding

Page format

Print position motion

PRODUCT DESCRIPTION

Classification

Operation

Command

Font selection

Pitch

DC 2, ESC P, ESC:

Bold Font

ESC E, ESC F

Master Select

ESC I

Print Quality

ESC [d

Select Font and Pitch

ESC [I

Double-Width

DC4, SO, ESC SO, ESC W

Enlarge and Life Space

ESC [@

Condensed

SI, ESC SI

Double-Strike

ESC G, ESC H

Super-/ Subscript

ESC T, ESC S

Underline

ESC -

Line / Score

ESC_

Back Space

Space

Character Table

ESC 6, ESC 7, ESC [T

Print Data as Characters

ESC ^, ESC¥

Bit image

Bit Image

ESC K, ESC L, ESC Y, ESC Z

Bar code

Set up Bar code

ESC [f

Transfer Bar code

ESC [p

Download

ESC=(only Draft mode)

Font enhancement

Spacing

Character handling

Download

Control codes

LX-300+/1170

Revision C

1.5.3 Bi-Directional Commands

-[Save] column shows that SV commands is effective to each feature or not.
-¡: All parameters are saved., ∆: Some limited parameters are saved.,-: No parameter is
saved.

o Reply printer ID
Reply printer ID:
[ESC][SOH]@EJL[SP]ID[CR][LF]
The printer sends the following ID string in reply to this command.
@EJL[SP]ID[CR][LF]
MFG: EPSON;
CMD: ESCPL2,PRPXL24,BDC;
MDL: LX-300+;
CLS: PRINTER;
DES: EPSON[SP]LX-300+;
[FF]

Table 1-22. Bi-Directional Commands

@EJL[SP]ID[CR][LF]
MFG: EPSON;
CMD: ESCP9,PRPII9,BDC;
MDL: LX-1170;
CLS: PRINTER;
DES: EPSON[SP]LX-1170;
[FF]

LX-300+

LX-1170

o Enter / Exit Remote Mode
n Enter Remote Mode:

[ESC](R[08H][00H][00H]REMOTE1

n Exit Remote Mode:

[ESC][NUL][00H][00H]

o Remote Commands
n Change Printer Settings:

XX[nL][nH][00H][ml]...[mx]

n Reply Printer Settings:

XX[nL][nH][01H][ml]...[mx]

XX is a string of 2 ASCII characters of defining a feature of the command. Following
[nL][nH] is two byte hexadecimal value that denotes the length of the [00H] and [ml]...[mx]
parameters. Last [m1] ... [mx] parameters are used to describe the detailed command
function and represent printer settings.
The printer sends the following string in reply to the commands of this type:

Function

Code/ Parameter

Enter Remote-1

ESC”(R”08H 00H 00H “REMOTE1”

Exit Remote-1

ESC 00H 00H 00H

Save settings

“SV” 00H 00H

Initialize

“RS” 00H 00H

Load power-on default

“LD” 00H 00H

Select typeface

“FO” 02H 00H 00H m1
m1=0(Roman), 1(Sans serif), 5(OCR-B)*1

Select character pitch

“CP” 02H 00H 00H m1
m1=0(10cpi), 1(12cpi), 2(15cpi), 3 (17.1cpi),
4(20cpi), 5(Propotional)

Select draft or NLQ

“CQ” 02H 00H 00H m1
m1=0(Draft), 1(LQ), 2(High speed draft)

Select character table

“CT” 02H 00H 00H m1
m1=0 (Table0), 1(Table1)

∆*3

Assign character table

“AT” 04H 00H 00H m1 m2 m3
m1=0(Table0), 1(Table1)
m2, m3=(ESC/P2 Character Table No.)*4

∆*3

“IC” 02H 00H 00H m1
m1=0(U.S.A), 1(France), 2(Germany), 3(U.K.)
4(Denmark1), 5(Sweden), 6(Italy), 7(Spain1),
8(Japan), 9(Norway), 10(Denmark2), 11(Spain2),
12(Latin America)

∆*5

Select an international
character set

@BDC[sp]PS[CR][LF]
XX: Reply-Data;
[FF]
Table 1-22 shows the XXs that are provided in this printer.

Turn 1 inch skip perforation
on/off

“SK” 02H 00H 00H m1
m1=0(off), 1(on)

Save

∆*2

*1 Don’t describe in manual.
*2 m1=0 to 1 only
*3 Only the following parameters are memorized. (Table 1-23)

PRODUCT DESCRIPTION

Control codes

LX-300+/1170

Revision C
Table 1-25. NLSP ver. only

Table 1-23. Note for Table 1-22
m1 set by AT/CT

m2 set by AT

m3 set by AT

All parameters that can be set

*4 m2 and m3 apply to the following ID number. (See Table 1-24 & Table 1-25.)

Character table

0EH

30H

PC866 UKR

29H

00H

PC 708

0FH

00H

PC869

2AH

00H

PC720

0DH

20H

PCAR_864

7FH

02H

ISO 8859-2

1BH

00H

MAZOWIA

2DH

00H

PC771

Table 1-24. Std and NLSP ver.
*5 m1=0 to 7 only
m2

Character table

00H

Italic

19H

00H

BRASCII

01H

00H

PC437

1AH

00H

Abicomp

03H

00H

PC850

7FH

01H

ISO Latin1

Function

Code/ Parameter

07H

00H

PC860

23H

00H

Roman8

Set page length

08H

00H

PC863

2CH

00H

PC858

09H

00H

PC865

1DH

0FH

ISO 8859-15

18H

00H

PC861

“PG” 05H 00H 00H p1 p2 m1 m2
p1=0(Continuous paper), p2=0(Rear),
p1=1(CSF), p2=0(bin1)
p1=2(Manual insertion), p2=0(rear)
-Page legth=m1+256*m2,
0.118mm (1/216inch)
648 (76.2mm(3inch)) <= m1+256*m2 <=
4752(558.8mm(22 inch))
“TP” 05H 00H 00H p1 p1 m1 m2
p1=0(Continuous paper), p2=0(Rear),
p1=1(CSF), p2=0(bin1)
p1=2(Manual insertion), p2=0(rear)
-Top margin=m1+256*m2,
0.118mm (1/216inch)
36 (4.2mm) <= m1+256*m2 <= 288 (8.5mm +
25.4mm(1inch))

Turn unidirectional mode on/
off

“PD” 02H 00H 00H m1
m1=0(Bi-d.), 1(Uni-d.)

Turn auto tear-off on/off

“TO” 02H 00H 00H m1
m1=0(off), 1(on)

Turn auto line feed on/off

“LF” 02H 00H 00H m1
m1=0(off), 1(on)

Table 1-26. Bi-Directional Commands

Table 1-25. NLSP ver. only
m2

Character table

01H

10H

PC437 Greek

1CH

00H

Code MJK

05H

00H

PC853

1DH

07H

ISO 8859-7

06H

00H

PC855

1FH

00H

ISO Latin 1T

0AH

00H

PC852

20H

00H

Bulgaria

0BH

00H

PC857

21H

00H

Hebrew 7

0CH

00H

PC862

22H

00H

Hebrew 8

0DH

00H

PC864

24H

00H

PC 774

0EH

00H

PC866

25H

00H

Estonia

0EH

20H

PC866 LAT.

28H

00H

PC APTEC

PRODUCT DESCRIPTION

Set Top margin

Control codes

Save

LX-300+/1170

Revision C

1.5.3.1 Reply Printer Status

Table 1-26. Bi-Directional Commands
Function

Code/ Parameter

Select control language

“PM” 02H 00H 00H m1
m1=0(ESC/P), 2(IBM 238x Plus emulation)

Turn printer state reply on/off “ST” 02H 00H 00H m1
m1=0, 1, 2, 3

Save
¡
-

Turn Slash zero on/off

“EX” 06H 00H 00H 00H 00H 00H 01H m1
m1=0(off), 1(on)

Turn Buzzer on/off

“EX” 06H 00H 00H 00H 00H 00H 02H m1
m1=0(enable), 1(disable)

Turn IBM emulation Auto
CR on/off

“EX” 06H 00H 00H 00H 00H 00H 04H m1
m1=0(off), 1(on)

Set starting data/month/year

“SD” 04H 00H 00H m1 m2 m3
00<=m1<=99, 01<=m2<=12, 01<=m3<=31

Inquire printer state reply on/
off

“ST” 01H 00H 01H
“@BDC” SP “PS” CR LF “ST:” “;” FF

Echo parameters

“??” nL nH 01H
“@BDC” SP “PS” CR LF “??:” “;” FF

Inquire starting date/month/
year

“SD” 01H 00H 01H
“@BDC” SP “PS” CR LF “SD:”
“;” FF

Inquire total printing lines/
power on hours

“TL” 01H 00H 01H
“@BDC” SP “PS” CR LF “TL:” “;” “TPL:”

“;” “TPH:” ”;” “TPR:”
“;” FF

PRODUCT DESCRIPTION

The printer sends back one of the five strings shown below according to the printer status at
that time every few seconds.
“@BDC”SP “ST” CR LF
“ST:” ”;”
[“ER:” ”;”]
[“PP:””;”]
[”CD:””;”]
[“IG:”[“,”...]”;”]
[“TEC:””;”]
FF

o status_code
Table 1-27. Status_Code
Status

“”

In the error state

“00”

In the busy state

“02”

In the waiting state

“03”

In the idle state

“04”

In the pose state

“05”

o error_code
-

Table 1-28. Error_Code
Error

“”

Fatal error

“00”

Port is not selected

“01”

Release lever position error

“03”

Paper out

“06”

Control codes

LX-300+/1170

Revision C

o Paper_path

1.5.3.2 Packet commands
Table 1-29. Paper_Path

Table 1-31. Packet Commands

paper_path

“”

Function

Code

Continuous paper (rear)

“0000”

Device ID request

“di” 01H 00H 01H

Continuous paper (bottom)

“0001”

Device ID reply (*1)

“@EJL” SP “ID” CR LF FF

Cut sheet (rear)

“0200”

State-Reply request

“st” 01H 00H 01H

CSF Single bin

“0100”

State-Reply (*2)

“@BDC” SP “ST” CR LF FF

No support command

“XX:;” FF
(XX is the command string being invalid.)

o characteristic status code

NOTE: (*1) The reply string is as same as BDC-ID Reply.

Table 1-30. Characteristic Status Code
location

size

type

Refer to

NOTE: (*2) The reply string is as same as BDC-ST Reply.

Structure version

2bytes

“02” fixed

Starting date

6bytes

“yy”, “mm, “dd”

“SD” command

Total printing line number

8bytes

“nnnnnnnn”

“TL” command

Total power on hour

+16

4bytes

“nnnn”

“TL” command

Total printing number for
ribbon charge timing

+20

8bytes

“nnnnnnnn”

“TL” command

o MIB proxy information
“1G:”
“0305NA,”
“09NANA,”
“0CNANA;”
“TEC:06;”

Sheet feeder bin 1 (removable), capacity 5mm,
quantity of paper N.A.
Manual feed rear, capacity N.A., quantity of paper N.A.
Tractor rear, capacity N.A., quantity of paper N.A.
9pin SIDM

PRODUCT DESCRIPTION

Control codes

LX-300+/1170

Revision C

1.6 Initialization
o Power-on initialization
The initialization of this level is activated by power-on or cold-reset command
(remote RS command).
This initialization is;

n to initialize the printer mechanism.
n to execute Operator initialization.
o Operator initialization
The initialization of this level is activated by -INT signal (negative pulse).
This initialization is;

n to clear the all buffers of data.
n to cancel the download character definition.
n to make the printer stand-by state, if no errors occur.
n to execute Software initialization.
o Software initialization
The initialization of this level is activated by the control code ESC@.
This initialization is;

n to clear the unprinted data.
n to make the printer’s setting defaults.

PRODUCT DESCRIPTION

Initialization

LX-300+/1170

Revision C
o Cut sheet (multi part)

1.7 Paper Specifications

Table 1-33. Cut Sheet (Multi part)

o Cut sheet (single sheet, not multi part)
Table 1-32. Cut Sheet (single sheet, not multi part)
Manual insertion
Minimum

Maximum

CSF single-bin
Minimum

(inch)
(mm)

(3.9)
100

(10.1)
(257)

Length

(inch)
(mm)

(3.9)
100

(14.3)
(364)

Maximum

(3.9)
100

(10.1)
257

(7.2)
182

(8.5)
216

Copies

Length

(inch)
(mm)

(3.9)
100

(14.3)
364

(10.1)
257

(14.0)
356

Total
Thickness

Thickness

(inch)
(mm)

(0.0025)
0.065

(0.0055)
0.14

(0.0028)
0.07

(0.0055)
0.14

(g/m2)
(lb.)

52
(14)

90
(24)

64
(18)

90
(24)

Weight

Quality

Plain paper, Reclaimed paper
Not curled, not folded, not
crumpled

NOTE: Printing on reclaimed paper is available only under normal
temperature and humidity conditions.

PRODUCT DESCRIPTION

Maximum

Width

(inch)
(mm)

Width

Minimum

Weight
(one sheet of
multipart)

1 original + 4 copies
(inch)
(mm)

(0.0047)
0.12

(0.015)
0.39

(g/m 2)
(lb.)

52
(14)

90
(24)

Quality

Plain paper, Reclaimed paper
Not curled, not folded, not crumpled.

Jointing

Line glue at the top or one side of form.

NOTE: Printing on reclaimed paper is available only under normal
temperature and humidity conditions.

Paper Specifications

LX-300+/1170

Revision C

o Envelope

o Continuous paper (Single sheet and Multipart)
Table 1-34. Envelope
Minimum
(inch)
(mm)

(6.5)
165

Length

(inch)
(mm)

(3.6)
92

Width

(inch)
(mm)

(9.5)
241

Length

(inch)
(mm)

(4.1)
105

Envelop
(No. 10)

Quality

(inch)
(mm)

(0.0063)
0.16

(0.0205)
0.52

The difference of thickness at the printable area is within
0.25mm (0.0098 inch).

(g/m2)
(lb.)

45
(12)
BOND paper, PLAIN paper or AIR MAIL
No glue at a flap
Not curled, not folded, not crumpled

NOTE: Printing on reclaimed paper is available only under normal
temperature and humidity conditions.

90
(24)

Bottom Entry

Min.

Max.

Min.

Max.

Width

(inch)
(mm)

(4)
101.6

(10)
254

(4)
101.6

(10)
254

Length
(one page)

(inch)
(mm)

(4)
101.6

(22)
558.8

(4)
101.6

(22)
558.8

Copies

Total Thickness

Weight

Rear Entry

Maximum

Width
Envelop
(No. 6)

Table 1-35. Continuous Paper (Single sheet and Multi Part)

1 original + 4 copies

Total Thickness

(inch)
(mm)

(0.0025)
0.065

(0.015)
0.39

(0.0025)
0.065

(0.015)
0.39

Weight
(not multipart)

(g/m2)
(lb.)

52
(14)

82
(22)

52
(14)

82
(22)

Weight
(one sheet of
multipart)

(g/m2)
(lb.)

40
(12)

58
(15)

40
(12)

58
(15)

Quality

Plain paper, Reclaimed
paper, Carbonless multipart
paper

Jointing

Point glue or paper staple
(both sides)

NOTE: Set the longer side of envelope horizontally.

PRODUCT DESCRIPTION

Paper Specifications

LX-300+/1170

Revision C

o Labels

63.5 mm (2.5 inch) min.

Table 1-36. Continuous Paper with Labels
Rear Entry
Min.
Label size

Max.
---

Min.

Max.

See the figure below.
---

(4)
101.6

(10)
254

---

(4)
101.6

(22)
558.8

(inch)
(mm)

---

(0.0028)
0.07

(0.0035)
0.09

(inch)
(mm)

---

(0.0063)
0.16

(0.0075)
0.19

Base sheet width

(inch)
(mm)

Base sheet length
(one page)

(inch)
(mm)

Base sheet thickness
Total thickness
Label weight

Bottom Entry

(g/m 2)
(lb.)

Quality

---

AVERY CONTINUOUS
FORM LABELS, AVERY
MINI-LINE LABELS or the
same quality labels

NOTE: Printing on labels is available only under normal temperature and
humidity conditions.

Label

R_2.5 mm (0.1 inch) min.

Figure 1-8. Printable Area - Label
o Roll paper
Table 1-37. Roll Paper
Minimum

Maximum

Width

(inch)
(mm)

(8.5)
216

Length

(inch)
(mm)

---

Thickness

(inch)
(mm)

(0.0028)
0.07

(0.0035)
0.09

Weight

(g/m2)
(lb.)

52
(14)

82
(22)

64
(17)

---

23.8 mm
(15/16inch)
min.

Quality

Plain paper, Not curled, not folded, not crumpled

NOTE: The base sheet of labels must be continuous paper.
NOTE: Continuous paper with labels should be inserted from the bottom
entrance.

PRODUCT DESCRIPTION

Paper Specifications

LX-300+/1170

Revision C
o Physical Specifications (CSF)

1.8 Physical Specifications

n Dimensions:

366 x 441 x 370 mm (WxDxH)

1.8.1 Physical Specifications for LX-300+

n Mass:

Approx. 4.6 kg

o Physical Specifications (Without pull tractor)

n Appearance:

See the figure below.

n Dimensions:

366 x 275 x 159 mm (WxDxH)

n Mass:

Approx. 4.4 kg

n Appearance:

See the figure below.

Figure 1-10. Appearance With CSF (LX-300+)

Figure 1-9. Appearance Without Pull Tractor (LX-300+)

PRODUCT DESCRIPTION

Physical Specifications

LX-300+/1170

Revision C
o Physical Specifications (CSF)

1.8.2 Physical Specifications for LX-1170
o Physical Specifications for World Wide (Without pull tractor)

n Dimensions:

366 x 441 x 370 mm (WxDxH)

n Dimensions:

366 x 275 x 159 mm (WxDxH)

n Mass:

Approx. 4.6 kg

n Mass:

Approx. 4.4 kg

n Appearance:

See the figure below.

n Appearance:

See the figure below.

Figure 1-11. Appearance Without Pull Tractor (LX-1170)

PRODUCT DESCRIPTION

Physical Specifications

LX-300+/1170

Revision C

1.9 Accessories
Table 1-38. Enclosed Parts
Enclosed Items

Quantity

User's manual

Driver disk

Ribbon cartridge (Black)

Power supply cable (230 V Version)

Table 1-39. Expendables
Enclosed Items

Description

Ribbon cartridge (Black: For LX-300+)

#8750

Ribbon cartridge (Black: For LX-1170)

#8755

Ribbon pack (Black)

#8758

Ribbon cartridge (Color: Only available for LX-300+) S015073

Table 1-40. Options
Unit

Description

Cut sheet feeder (For LX-300+)
(For LX-1170)

C80637*

Pull tractor unit (For LX-300+)

C80030*

(For LX-1170)

C80639*

C80034*

Roll paper holder

#8310

Color upgrade kit (Only available for LX-300+)

C83208*

EpsonNet 10/100 Base TX Ext. Print Server

C82378*

PRODUCT DESCRIPTION

Accessories

CHAPTER

2
OPERATING PRINCIPLES

LX-300+/1170

Revision C

2.1 Overview
LX-300+/1170 consists of the printer mechanism and electric circuit boards.

Power Supply
Board

Main Board
C294MAIN/
C294MAIN-B

C294PSB/PSE

Printer
Mechanism

Panel Board
C294PNL

Figure 2-1. Component Unit
o Circuit board
n Main (control circuit):

C294MAIN(LX-300+)
C294MAIN-B Board(LX-300+/LX-1170)

n Power:

C294PSB / C294PSE Board

n Panel:

C294PNL Board

The following sections describe the operating principles of each unit.

Operating Principles

Overview

LX-300+/1170

Revision C

2.2 Printer Mechanism

o Ribbon mechanism

The following is main components of the LX-300+/1170 printer mechanism.

o Platen gap adjustment mechanism

Color ribbon drive mechanism (option)
Adjust lever, Platen gap detector

o Printhead

o Paper feed mechanism

o Carriage mechanism

PF motor, rear paper end (RPE)detector, bottom paper end (BPE) detector

Carriage (CR) motor, Carriage home position (HP) detector

o Release mechanism
Release detector (REL)
Tractor

Rear paper end detector

Release detector
Release mechanism
Bottom paper end detector

PF motor

Platen

Carriage guide shaft
Timing belt

Adjust lever
Carriage motor
Ribbon

Carriage

Platen gap detector
Ribbon Mechanism

Carriage home position detector

Printhead

Figure 2-2. Printer Mechanism Block Diagram

Operating Principles

Printer Mechanism

LX-300+/1170

Revision C

2.2.1 Printhead
The table below shows the printhead specifications.

Table 2-1. Printhead Specifications
Item

Specification

Number of wires

Diameter of wire

φ0.29 mm

Wire configuration

See Figure 2-3 "Wire Configuration".
Note: The figure is seen from the back of the head
facing printing side.

Direct current coil resistance

33.3 ±3.3 Ω (25°C)

Head drive method

Rated voltage drive

Head drive voltage

35+2.1/-3.5 V
• Normal: 0.75 A (Standard)
• Copy:
0.85 A (Standard)
1.0 A (Maximum)
• Normal: 1350Hz or less
• Copy:
1350Hz or less
• Black ribbon: 0.2 billion stroke/ wire or more
• Color ribbon: 0.1 billion stroke/ wire or more
• Temperature: 5 to 55°C
• Humidity:
10 to 85%

Peak current
Head drive frequency
Head life
Environmental condition

Figure 2-3. Wire Configuration

2.2.1.1 Buzzer Function
This printhead also works as a buzzer. The table below is buzzer specification.

Table 2-2. Buzzer Function -- Specification
Item

Operating Principles

Printer Mechanism

Specification

Head voltage

35 +2.1 / -3.5 V

Drive frequency

2kHz, 1.5kHz

LX-300+/1170

Revision C

2.2.2 Carriage Mechanism
The following is the components of the LX-300+/1170 carriage mechanism and its
explanation. (Refer to Figure 2-2.)

o Carriage:

Mounts the printhead.

o CR motor:

Drives carriage to the printing column direction.

o Timing belt:

Transfers the drive from the CR motor to the carriage.

o Carriage guide shaft:
o HP detector:

Shifts the carriage parallel to the platen.

Detects carriage home position.

CR MOTOR
This printer uses stepping motor for CR motor. Open loop control switches the phases
according to the setting period and this mechanism enables the carriage to move until the
appointed position. The table below is the CR motor specifications..

Table 2-3. CR Motor Specifications
Item

Specification

Motor type

2-phase/200-pole hybrid stepping motor

Coil resistance

5.7Ω±10% (25°C)

Control method

Bi-polar drive

Phase drive

2-2 phase, 1-2 phase, W1-2 phase

Drive voltage

36.75 ±1.75 V

CR feed pitch

Minimum Resolution:
0.212 mm (1/120”) (1-2 phase, 2 pass)

Operating Principles

Printer Mechanism

LX-300+/1170

Revision C

Speed Mode
Carriage

Carriag
e speed
mode

CR drive
frequency
[Hz]

3600

3375

2700

2250

Printing
mode

Phase
drive
[pps]

Current limit (A/phase)
Front
rush

High
speed

Normal
speed

Low
speed

Rear
rush

Color

2-2

0.79

0.70

2-2

0.70

0.59

Color

2-2

0.79

0.70

2-2

0.70

0.59

Color

2-2

0.79

0.70

2-2

0.70

0.59

Adjacent
dot
resolution
[dpi]

Head drive
frequency
[Hz]

1350

Carriage speed
mode at power
down

High or
low speed
printing

High speed draft 10cpi

1350

High speed draft 12cpi

1350

High speed draft 15cpi
Draft 10cpi
Bit image 60 dpi

Printing speed

Draft 12cpi

Color

2-2

0.79

0.70

1440/21

1286

High speed draft 17cpi

2-2

0.70

0.59

1350

Bit image 72 dpi

Color

2-2

0.79

0.70

1200

Bit image 80 dpi

1-2

0.65

0.59

1350

High speed draft 20cpi
Draft 15cpi
Bit image 90 dpi

1800

1350

Both

1-2

0.65

0.59

120

1350

Draft 20/17cpi
NLQ 10cpi
Bit image 120 dpi

1125

Both

1-2

0.65

0.59

144

1350

Bit image 144 dpi

900

Both

1-2

0.65

0.59

180

1350

NLQ 15cpi

675

Both

1-2

0.65

0.59

240

1350

NLQ 17/20cpi

450

Both

1-2

0.65

0.59

Operating Principles

Printer Mechanism

LX-300+/1170

Revision C

CARRIAGE HOME POSITION (HP) DETECTOR

2.2.3 Ribbon Mechanism

The table below is the HP detector specifications.

2.2.3.1 Ink Ribbon Shifting Mechanism
Ink ribbon shifting mechanism: CR motor drives timing belt and the timing belt driven
pulley drives the ribbon shifting gears.

Table 2-5. HP detector Specifications
Item

Specification

Method

Mechanical contact method

Switching rate

0.6 to 1.0 mA, 5 VD±5%
• out of HP: close
• within HP: open

Switching mode

2.2.3.2 Color Ribbon Driving Mechanism (Option)
Color ribbon driving is only avilable for LX-300+.
Color ribbon driving mechanism: shifts the color ribbon up and down to change the
color area of the ribbon to be printed.

HP detector detects the signal right after when the CR motor switches the phase.

2.2.2.1 High speed skip method
At no-printing area, the carriage moves at high speed compared to the normal carriage
speed at printing. This is called carriage control.

Color ribbon mechanism consists of the color shift (CS) motor, CS cam, ribbon detector,
CS lever assembly and color cartridge holder. Color ribbon is installed on the color
cartridge holder.
When CS motor revolves, 1) the pinion revolves CS cam, 2) the CS lever assembly on the
CS cam shifts the color cartridge holder up and down and 3) drives ribbon up and down.

Table 2-6. CS Motor Specifications
Item
Motor type

2-phase/48-pole PM stepping motor

Coil resistance

150Ω ±5% (25°C, per 1 phase)

Control method

uni-polar rated voltage drive

Phase drive

2-2 phase

Drive voltage

36.75 ± 1.75 VDC
• Operating, peak current: 245 mA
• Non-operating:
20 mA
500 pps

Consuming current
Drive frequency

Operating Principles

Specification

Printer Mechanism

LX-300+/1170

Revision C

Color ribbon drive circuit

RIBBON CARTRIDGE DETECTOR
Ribbon detector detects if the color ribbon is installed or not.

o Detect Timing
n When the power is applied.

Ribbon detector

n When recovering from the economy mode.
n When the printing is started.
Table 2-7. Ribbon Detector Specifications
Item
CS motor
CS cam

CS lever assembly

Method

Mechanical contact method

Switching rate

0.6 to 1.0 mA
• Color ribbon cartridge is installed: High
• Black ribbon cartridge is installed or
ribbon is not installed: Low

Switching mode

Color ribbon
CS lever assembly
Black
Cyan
Magenta
Yellow
Color cartridge holder

AVOID COLOR FROM MIXING
To avoid the color area on the ribbon from mixing up each other or minimize the color
mixing up, the printing is done by the following order when printing green, violet and
orange.

Table 2-8. Color Printing Order

CS motor, pinion
CS cam

Figure 2-4. Color Ribbon Driving Mechanism

Operating Principles

Specification

Printer Mechanism

Color

First color

Second color

Green

Yellow

Cyan

Orange

Yellow

Magenta

Violet

Magenta

Cyan

LX-300+/1170

Revision C

COLOR MECHANISM INITIALIZATION

PLATEN GAP (PG_SW) DETECTOR

The printer mechanism initializes when the power is applied or when recovering from the
energy saving mode.

The following is PG_SW specification.

Table 2-9. PG_SW Detector Specifications

o Color mechanism initialization

Item

Color mechanism initialization shifts color mechanism for the black ink area to be
at the home position. Color mechanism initialization shifts the carriage at the same
time to prevent the ribbon from hanging on the printhead.
When the buffer is cleared or when the printer is under the pause condition, the
color mechanism initializes and waits for the next printing command.

Specification

Method

Mechanical contact method

Switching rate

0.6 to 1.0 mA, 5 VD±5%
• PG=0: close
• PG=0-4: open

Switching mode

Adjust lever

2.2.4 Platen Gap Adjustment Mechanism
This mechanism is to adjust the distance between the platen and the printhead (platen gap)
according to the paper thickness.

Carriage guide shaft
Carriage

The following is the components of the LX-300+/1170 platen gap adjustment mechanism
and its explanation. (Refer to Refer to Figure 2-5.)

o Carriage:

Mounts the printhead.

o Carriage guide shaft:

Shifts the carriage horizontally.

Parallelism adjust
bushing

PG_SW

o Adjust lever and Parallelism adjust bushing:
Installed at the both ends of the carriage guide shaft

o Platen gap detector (PG_SW)
Carriage guide shaft is eccentric toward the adjust lever rotating center. Due to this, when
rotating the adjustment lever back and forth, the printhead shifts toward and against the
platen to adjust the platen gap. When printing on thick paper such as postcards and
envelops, set the adjust lever over the 1st level. PG detector shifts the printer to the copy
mode from the printing mode. Printing speed will be lowered but it prevents wire from
breaking off.

Printer mechanism
Platen gap

Printhead
Adjust lever

Platen
Carriage

Carriage guide shaft

Figure 2-5. Platen Gap Adjustment Mechanism

Operating Principles

Printer Mechanism

LX-300+/1170

Revision C

2.2.5 Paper Feed Mechanism

PF MOTOR

This mechanism consists of paper feed motor (PF motor), paper feed gears, platen, rear
paper end detector, bottom paper end detector and push tractor unit. (Refer to Refer to
Figure 2-2.)

o Paper Feed Method

LX-300+/1170 uses a stepping motor for PF motor. Open loop control switches the phases
according to the setting period and this mechanism loads and carries paper to the appointed
position and eject paper.
The table below is the PF motor specifications.

n Friction feed

Table 2-10. PF Motor Specifications

n Push tractor feed

Item

Uses standard push tractor

Specification

Motor type

2-phase/96-pole Hybrid stepping motor

Coil resistance

16.0Ω ±10% (25°C, per 1 phase)

Control method

bi-polar rated current drive

Phase drive

1-2 phase, W1-2 phase

Drive voltage

36.75 ± 1.75 VDC
(This voltage is added to driver.)

n Simple CSF (option)

Drive current

0.1 to 0.9A

n Tractor (standard)

Paper feed pitch

Minimum Resolution:
0.059 mm (1/432”) (1-2 phase, 2 pass)

n Push-pull tractor feed
Uses standard push tractor + Option tractor

n Pull tractor feed
Replace the standard push tractor with option tractor

o Feeder

Push / Pull

n Pull tractor (option)
n Roll paper holder
o Paper path
n Manual loading
Rear paper load, top paper load

n CSF
Rear paper load, top paper load

n Push tractor
Rear paper load, top paper load

n Pull tractor
Rear / Bottom paper load, top paper load

o Auto loading
When loading paper manually, push paper between the platen and the driven paper
load roller. Paper will be loaded automatically.

Operating Principles

Printer Mechanism

LX-300+/1170

Revision C

2.2.5.1 Page Length Measurement

RPE DETECTOR
RPE detector is installed on the paper path at the back of the printer. The table below shows
the RPE detector specifications.

Value = [The number of paper feed pulse from the paper top (top margin: 4.2mm) until RPE
detector detects paper end] + [forms over-ride specified paper feed pulse] - [adjustment
value]

Table 2-11. RPE Detector Specifications
Item

Specification

Method

Mechanical contact method

Switching rate

0.6 to 1.0 mA, 5 VD±5%
• Paper inside: open
• No paper: close

Switching mode

o When CSF is used:
The uncertainty of the paper end detector may vary the number of printing lines
within the same paper size. To avoid this, when CSF is used, page length
measurement calculates the printable lines and if the paper is longer than the
printable lines, the number of printing line is considered the printable lines (fixed
value).
When paper is shorter than the printable lines, the printer prints the fixed number
of lines by forms over-ride function (which allows the fixed number of lines to be
printed even when RPE detector detects paper end).

BPE DETECTOR
BPE detector is installed right under the platen. The table below shows the BPE detector
specifications.

Table 2-12. BPE Detector Specifications
Item

Specification

Method

Mechanical contact method

Switching rate

0.6 to 1.0 mA, 5 VD±5%
• Paper inside: open
• No paper: close

Switching mode

Operating Principles

Page length measurement is a process to convert the following value to the number of
printing lines.

o When CSF is not used:
When loading paper manually or when tractor feed is used, the number of printing
lines of paper end is determined by forms over-ride function after BPE or RPE
detector detects paper end.

Printer Mechanism

LX-300+/1170

Revision C

2.2.6 Release Mechanism

The table below shows the release detector specifications.

Table 2-13. Release Detector Specifications

This mechanism switches the flow of PF motor driving forth between to the friction feed
and to the tractor feed.

Compression spring
Plain
washer

Item

Tractor gear

Paper
advance
reduction
gear

Mechanical contact method

Switching rate

0.6 to 1.0 mA, 5 VD±5%
• Friction: open
• Tractor: close

Switching mode

Release lever
Release detector

Specification

Method

2.2.7 Other Special Functions
2.2.7.1 Energy saving mode
This function saves electric consumption when the printer is in the standby mode. This
mode turns hold current of PF motor, CR motor and CS motor OFF.

2.2.7.2 Quiet Mode
Quiet mode lowers printing temperature. When this mode is selected, carriage speed will be
lowered to the power down mode speed. Refer to Table 2-4, “Carriage Speed Mode,” on
page 49.

Printer mechanism

PF motor

Figure 2-6. Release Mechanism
Release mechanism consists of the following.

o Release lever:Shifts tractor low speed gears back and forth.
o Tractor gear
o Paper advance reduction gear:Transfers the PF motor driving forth to the tractor
gear.

o Release detector (REL):

Operating Principles

Detects the release lever position.

Printer Mechanism

LX-300+/1170

Revision C

2.3 Electrical Circuit Operating Principles

o C294 MAIN Board Block Diagram
NOTE: CS motor is only avilable for LX-300+.

2.3.1 MAIN Board Electric Circuit
C294 MAIN is installed in LX-300+ for initial production, and for later production, the
main board is switched to C294 MAIN-B (2 in 1). As for LX-1170, C294 MAIN-B is
installed from initial production.

Control Panel

HP sensor

RPE Sensor
Release Sensor

BPE Sensor
PG Sensor

Figure 2-7. C294
MAIN Board Block Diagram (LX-300+)

Operating Principles

Electrical Circuit Operating Principles

LX-300+/1170

Revision C

o C294 MAIN-B Block Diagram

Figure 2-8. C294 MAIN-B Board Block Diagram (LX-300+/1170)

Operating Principles

Electrical Circuit Operating Principles

LX-300+/1170

Revision C
Table 2-14. Main Elements

Table 2-14. Main Elements
Elements

Location

CPU
(C294 MAIN)

G/A *
(C294 MAIN)

CPU/GateArray
(C294 MAIN-B)

IC3

IC6

IC3

Elements

Function
RISC C33208 CPU, QFP 128 pin
• Outside clock 19.66 MHz/
Inside clock 39.32 MHz
• 8KBRAM built-in
• Various DMA
• A/D converter
Approximately 21000 gates, QFP 160 pin
• Bit manipulation
• Clock control
• interface control (IEEE1284/Type-B I/F)
• Input Buffer control
• Motor control
• Head control
CPU:
RISC C33208 CPU, QFP 128 pin
• Outside clock 19.66 MHz/
Inside clock 39.32 MHz
• 8KBRAM built-in
• Various DMA
• A/D converter

Function

RESET IC

IC4

M62030 (SANYO), 8 pin
• CPU and G/A reset

CR Motor Driver

IC9

LB1847 (SANYO)

PF Motor Driver

IC10

LB1847 (SANYO)

Serial I/F
Transceiver

IC2

HIN202CBN or equivalent

Regulator IC

IC11

BA033 (ROHM) or equivalent
• Generates 3.3V logic voltage

Regulator IC

IC12

PD494 or equivalent
• 95V rated voltage circuit
• Detects over voltage (over 150V) and sends OFF
signal to the power supply boards.

Thermistor

TH1

Measures temperature of the motor driver.

2.3.2 C294PSB / C294PSE Board
LX-300+/1170 generates power supply by a power supply boards: eather C294PSB (100V)
or C294PSE (200V) depending on local supplied voltage. The table below shows the power
supply boards input voltage specifications.

Approximately 21000 gates, QFP 160 pin
• Bit manipulation
• Clock control
• interface control (IEEE1284/Type-B I/F)
• Input Buffer control
• Motor control
• Head control

PROM

IC7

4M / 8Mbit, DIP 40 / 42 pin
• Stores firmware
• CG

DRAM

IC8

1/2/4M bit switching method, SPJ package 40 pin
• Various buffer, work area

EEPROM

IC5

AT93C46, 1kbit, SOP 8pin
• Stores default value and various parameter

Operating Principles

Location

Table 2-15. Power Supply Boards Input Voltage Specifications
Circuit

Input voltage

Fuse specification

C294PSB

99 - 132VAC

ULTSC-2.5A-NI

C294PSE

198 - 264VAC

HT 1.25A

2.3.2.1 Electric Circuit
The power supply board supplies two types of power for control circuit and driving
mechanism. The table below shows output voltage and its use.

Electrical Circuit Operating Principles

LX-300+/1170

Revision C

Table 2-16. Output Voltage and its Use
Output voltage

Use

35 V +5%/ -10%

Drive

5 V ± 5%

Logic Voltage*

NOTE: *: Core voltage of CPU and G/A is 3.3V and it is generated by the
regulator IC on the MAIN board form +5VDC.

Operating Principles

Electrical Circuit Operating Principles

CHAPTER

3
TROUBLESHOOTING

LX-300+/1170

Revision C

3.1 Overview

Troubleshooting

This chapter describes how to troubleshoot problems when any problems occurred to the
printer. Refer to troubleshooting flowcharts in this chapter to identify a defective part and
an appreopreate repair for it.

W A R N IN G

n Never touch printhead and any motors right after printing since
n

they are highly heated.
When disassembling the printer, be sure to disconnect the power
cable and remove the interface cable.

Initialization
Check

Check performance by selfcheck function.

Does any
trouble occur?

C A U T IO N

n Be sure to use specified tools for servicing to maintain the
quality.

n Make sure to apply specified oil, grease and glue.
n Perform adjustment as specified.

Identify problems from
symptoms.

Perform
maintenance.

Figure3-1. Troubleshooting Procedure

Troubleshooting

Overview

LX-300+/1170

Revision C

3.2 Troubleshooting

3.2.2 Check Performance By Self-Check Function

3.2.1 Initialization Check

LX-300+/1170 has self-check function and it supervises the printer condition constantly. If
any problem occurs, it indicates error by indicator LED and in some cases it notifies error to
the operator by beeping the buzzer. Identify error cause, referring to the indication first. If
error is not solved, perform unit repair.

Before troubleshooting, check the following basic items.
1.

When printer can perform printing, perform self-test and check if any troubles occur.

3.2.2.1 Indicator LED

When the printer cannot perform any printing, check the setting by “Default Setting”.
(Refer to Chapter 1.)

The table below shows the indicator LED and the printer condition.

Check if the outside and inside the printer is noticeably dirty or if any parts are broken.
If there is dirt, perform cleaning referring to Chapter 6 “Maintenance”.

Table 3-1. Indicator LED
Printer Condition

Pause

Paper Out

Front

Buzzer

Paper Out Error

Shoot beep x3

Release Lever Error

Long beep x5

Paper Eject Warning

BLINK

Tear Off

According to
LED On/Off
combination

Font Select

According to
LED On/Off
combination

Fatal Error

BLINK

Pause

Make sure each harness is connected properly.

Make sure no remarkable friction among printer mechanism gears. Make sure all gears
are linked properly.

Make sure there is no dirt nor scratch on rollers inside the printer.

Perform EEPROM clear as needed. Inside setting is reset to the factory default setting.
(Refer to Chapter 1.)

MICRO Adjust

o Paper Out Error
This error will be indicated when printer fails to feed paper or paper is run out.

n Solution
Set paper properly and try paper feed again.

Troubleshooting

LX-300+/1170

Revision C

o Release Lever Error
This error will be indicated when wrong release lever operation is performed. For
example, if you change the release lever setting when the printer already starts
feeding paper, this error will be generated.

n Solution
Reset the release lever.

3.2.3 Identify Problems From Symptoms
This section procedure to identify the problems from the abnormal symptoms. Basically
unit repair or replacement should be performed, but if necessary parts level replacement
should be performed.
Find your symptom in the table below and check the corresponding table.

o Fatal Error
This error will be indicated when;
-carriage error is occurred
-input voltage is abnormal
-hardware problem is occurred

n Solution
If it is carriage error, check if there is no obstacles for carriage to move.
If it is input voltage problem, check power supply voltage.
If it is hardware problem, check machine and electric circuit.

Table 3-2. Symptoms and Solutions
Symptom
When power is applied,
the printer does not
operate.
When power is applied,
the printer becomes fatal
error.

Self-test print is
abnormal.

Paper feed is abnormal.

Control panel and
switches do not operate
properly.
Printing operation is
abnormal when it is online.

Troubleshooting

Problems

Check Table

Control panel LED does not operate at
all.

Printer mechanism does not operate at
all.
• Control panel indicates fatal error.
• The printer indicates error after
initialization.
• Platen gap is not correct.
• Printhead and ribbon mask is
abnormal or their life are over.
• Vertical direction printing quality is
abnormal.
• Paper feed operation is not
performed.
• Paper switching is abnormal.
• Line feed is not equal.
• Skew is generated.
• LED indication is abnormal.
• Cannot input from switches.

• Self-test is normal, but the printing
from host computer is abnormal.

LX-300+/1170

Revision C

Table 3-5. When Power is Applied, the Printer Becomes Fatal Error.

Table 3-3. Control Panel LED Does Not Light On.
Cause

Check Point

Y/N

Blowout of a fuse on
the power board.

Is a fuse on the power
board blew out?

YES

Connector is not
connected to the
power board.

Are connectors
connected to the
power board
properly?

Power switch is
defective.

Is conductivity of the
switch is OK?

YES

Replace the power board.

HP detector is
defective.

Power board is
defective.

Are +5VDC and
+35VDC OK when
the power is on?

Replace the power board.

Power board is
defective.

Power board and the
main board are not
connected properly.

Is CN8 connected
properly?

Main board is
defective.

Control panel harness
is not connected
properly.
Control panel board
or harness is
defective.

Is the harness of the
control panel
connected properly?
-

Solution

Cause

Check the electric circuit and
printer mechanism. If there is no
short circuit, replace the fuse.

Any of CN3 to CN12
is not connected to the
main board properly.

Check Point
Are all connectors
connected properly?

HP detector harness is
not connected
properly

Replace the power board.

Y/N
NO

Is HP detector
harness CN3
connected properly?

Is power voltage
normal?

Solution
Connect it properly.
Replace the CR motor.
Connect it properly.

Replace the HP detector.

Replace the power board.

Connect CN8 properly.

Replace the main board and printer
mechanism.

Table 3-6. Self Test Print is Abnormal.
-

Cause

Check Point

Y/N

Solution

Any of CN3 to CN12
is not connected to the
main board properly.

Are all connectors
connected properly?

Connect them properly.

Replace the main board.

Connect the harness properly.

Printhead driver is
defective.
-

Replace the control panel.

Y/N
NO

Bi-d is not correct.

Are rows aligned
properly when bidirectional printing
is proceeded?

Adjust Bi-D.

Printhead is defective.

Is there any dot
missing?

YES

Replace the printhead.

YES

Replace the head FFC.

Is printing too light /
weak?

YES

Adjust the platen gap.

Is there any dirt on
printed documents?

YES

Adjust the platen gap.

Is there any dirt on
printed documents?

YES

Replace the ribbon mask.

Solution
Connect them properly.

Head FFC is not
connected properly or
broken.

Main board is
defective.

Replace the main board.

Printer mechanism is
defective.

Replace the printer mechanism.

Platen gap is not
correct.
Ribbon mask is
defective.

Troubleshooting

Is CR motor harness
CN10 connected
properly?

CR motor harness is
not connected
properly.
CR motor is defective.

Table 3-4. Printer Mechanism Does Not Operate.
Cause

Check Point

Troubleshooting

LX-300+/1170

Revision C
Table 3-6. Self Test Print is Abnormal.

Cause
Ribbon mechanism is
defective.
Printer mechanism is
defective.

Check Point
Is ribbon advanced
properly?
-

Table 3-9. Printing Operation is Abnormal When it is On-Line.
(Self-Test is Normal.)

Y/N

Solution

Replace the ribbon mechanism parts.

Replace the printer mechanism.

Table 3-7. Paper Feed is Abnormal.
Cause
RPE detector or BPE
detector is defective or
not connected
properly.

Check Point
Check the sensors.
Is there any
abnormality?

Y/N

Solution

Replace the sensor.

YES

Check the connection to the main
board.

Switch the release
lever. Is the paper
loading direction
switched?

Replace the printer mechanism or
check the connection.

Can the release lever
be switched?

Replace the release sensor or
check the connection.

Printer mechanism
paper loading
mechanism is
defective.

When the power is
off, can the printer
feed paper by
rotating the platen
knob manually?

Replace the printer mechanism or
paper loading mechanism parts.

PF motor is defective.

Is PF motor normal?

Replace the PF motor.

Paper switching
mechanism is
defective.

PF motor driver is
defective.

Cause

Y/N

Solution

Initial setting is
wrong.

Check the initial
setting with the
default setting. Is it
OK?

Reset the setting or use the EEPROM
clear to reset setting to the default.

Interface cable is
not connected
properly.

Are cables connected
properly?

Connect them properly.

Interface cable is
defective.

Replace the interface cable.

Main board is
defective.

Replace the main board.

Firmware is
defective.

Check Point

Is the firmware
version latest?

Replace the firmware.

Replace the main board.

Table 3-8. Control Panel and Switches Do Not Operate.
Cause

Check Point

Y/N

Solution

Switch is defective.

Is conductivity of
the switch is OK?

Replace the control panel.

Connect the control
panel harness.

Control panel
harness is connected
properly?

Connect it properly.

Control panel board is
defective or the
harness is defective.

Troubleshooting

Replace the control panel.

Troubleshooting

LX-300+/1170

Revision C

3.2.4 Unit and Parts Check
This section describes the checking method of the printhead, motors and sensors to find the
defective units and parts.
W A R N IN G

When repairing the unit, make sure to turn the printer off and plug
off the power cable except when this manual specifies to keep the
power on.

3.2.4.1 Printhead Check
By measuring the direct current resistance of the printhead coil, you can check if it is all
right.

Table 3-10. Printhead Coil Resistance
Item

Printhead

Operation
1. Set the multimeter to the resistance measuring range.
2. Connect the one side of the probe to C.
3. Connect the other side of the probe to corresponding
head pin No.

Specification
33.3 ± 3.3Ω
(at 25°C/phase)

Looked From Point A
Figure3-2. Head Coil Pin No.

Troubleshooting

LX-300+/1170

Revision C

3.2.4.2 Motor Check

3.2.4.3 Sensor Check

By measuring the direct current resistance of the motor coil, you can check if the motor is
all right.

When the sensor is connected mechanically, you can check the sensor by its conductivity.

Table 3-12. Sensor Check

Table 3-11. Motor Check
Item
CR motor

PF motor

CS motor
(option,
LX-300+
only)

1.
2.
3.
1.
2.
3.
1.
2.
3.
4.

Operation
Set the multimeter to the resistance measuring range.
Connect the one side of the probe to 1 or 2 pin.
Connect the other side of the probe to 3 or 4 pin.
Set the multimeter to the resistance measuring range.
Connect the one side of the probe to 1 or 2 pin.
Connect the other side of the probe to 3 or 4 pin.
Disassemble the CS unit.
Set the multimeter to the resistance measuring range.
Connect the one side of the probe to brown [TBD]
harness.
Connect the other side of the probe to other 4 harness.

Item
Specification
5.7Ω ±10%
(at 25°C/phase)

HP detector

16.0Ω ±10%
(at 25°C/phase)

150Ω ± 5%
(at 25°C/phase)

RPE detector

Release detector

BPE detector

PG detector

Troubleshooting

Operation
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to
CN3 1 pin.
3. Connect the other side of the probe to
CN3 2 pin.
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to
CN4 1 pin.
3. Connect the other side of the probe to
CN4 2 pin.
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to
CN5 1 pin.
3. Connect the other side of the probe to
CN5 2 pin.
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to
CN6 1 pin.
3. Connect the other side of the probe to
CN6 2 pin.
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to
CN3 7 pin.
3. Connect the other side of the probe to
CN3 7 pin.

Specification

When switching the
sensor actuator, it should
be switched ON/OFF.

LX-300+/1170

Revision C

3.2.4.4 Printhead Driver Check
Simple check of the printer driver (Q3 ~ Q11) can be done by the following method.

Table 3-13. Printhead Driver Check
Item

Printer driver

Troubleshooting

Operation
1. Set the multimeter to the resistance
measuring range.
2. Connect the one side of the probe to the
base of the transistor.
3. Connect the one side of the probe to
emitter of the transistor.

Specification

The resistance
should NOT be “0”
or infinity.

Troubleshooting

CHAPTER

4
DISASSEMBLY AND ASSEMBLY

LX-300+/1170

Revision C

4.1 Overview

4.1.2 Tools

This chapter explains the disassembly and assembly of LX-300+/1170.Read the precautions
below before disassembling and assembling the printer.

The table below lists the tools recommended to use for disassembly and assembly and
adjustment. Use only tools specified here.

Table 4-1. Recommended Tools-1

4.1.1 Precautions

Tools

See the precautions given under the handling “WARNING” and “CAUTION” in the
following column when disassembling or assembling the product.
W A R N IN G

n Disconnect the power cable before disassembling or assembling
n
n
n
n

C A U T IO N

the printer.
Never touch the printer right after it finishes printing, for the
printhead is highly heated.
If you need to work on the printer with power applied, strictly
follow the instructions in this manual.
Always wear gloves for disassembly and reassembly to avoid
iujury from sharp metal edges.
To protect sensitive microprocessors and circuitry, use static
discharge equipment, such as anti-static wrist straps, when
accessing internal components.

B740400100

Nipper

B740500100

Tweezers

B741000100

Soldering bit

B740200100

E ring holder #2.5

B740800400

+ driver No.2

B743800200

Box driver (opposite side distance: 7mm)

B741700200

Thickness gauge

B776702201

Table 4-2. Recommended Tools-2

adjusting the printer.
Observe the specified torque when tightening screws.
Apply lubricants and adhesives as specified.
Make the specified adjustments when you disassemble the
printer.
(See Chapter 5 for details.)
When performing an adjustment, follow the method described in
this manual.

Disassembly and Assembly

Needle-nose pliers

NOTE: All tools are available in market.

n Use only recommended tools for disassembling, assembling or
n
n
n

Part No.

Device
Multimeter
Oscilloscope

Specification
50MHz

NOTE: Only component level repairing service requires oscilloscope.

Overview

LX-300+/1170

Revision C

Table 4-3. List of Screws
Screw

Name
C.B.P., Tite, 3x10 F/ZN

C.P.B., Screw, 3x14 F/ZN

C.B.S., Screw, 3x4 F/Zn

Screw

Name
C.P., Screw, 3x4 F/ZN

C.B(O), Screw, 4x8 F/ZN

Jack Socket

C.B.B., (W(13), 3x14 F/ZN

Disassembly and Assembly

Overview

LX-300+/1170

Revision C

4.1.3 Service Checks After Repair

Table 4-4. Check List for Repaired Printer

Before returning the printer back to the user, use the check list below to confirm the quality
of the repaired printer.

Category

Component

Check

Is dot missing?

¨OK

¨NG

Are any wires broken?

¨OK

¨NG

Does carriage move smoothly?
¨CR movement is not noisy?
¨CR mechanism is not dirty?
¨CR mechanism is not oily?

¨OK

¨NG

Is the CR motor assembly at the
correct temperature?
(Not overheating?)

¨OK

¨NG

Is paper advancing smoothly?
¨PF movement is not noisy?
¨PF mechanism is not dirty?
¨PF mechanism is not oily?

¨OK

¨NG

Is the PF motor assembly at the correct
temperature?
(Not overheating?)

¨OK

¨NG

Are all the types of paper fed
smoothly?

¨OK

¨NG

Does the tractor feed paper smoothly?

¨OK

¨NG

Is the paper path clear of obstructions?

¨OK

¨NG

Is the platen free of damage?

¨OK

¨NG

Ribbon mask

Is the ribbon mask free of distortion?

¨OK

¨NG

Test printing

Is the test printing successful?

¨OK

¨NG

Online
printing

Is the online printing successful?

¨OK

¨NG

Is the platen gap adjusted correctly?

¨OK

¨NG

Is Bi-d adjustment value correct?

¨OK

¨NG

Have all user changeable settings been
reset to the default value?

¨OK

¨NG

Printhead

Carriage
mechanism

Printer
Mechanism

Item to Check

Paper feed
mechanism

Paper path

Printhead
Adjustment
Initial setting

Disassembly and Assembly

Overview

Item to Check

Check

LX-300+/1170

Revision C

4.2 Disassembly and Assembly

The figure below is the disassembly flowchart for main component.

This section explains the disassembly and assembly of Product Name. Unless otherwise
specified, assembly can be done in the reverse order of the disassembly procedure.

START

Anything that service person should pay attention to is described under “Check Point”. Any
adjustment required after assembly is described under “Adjustment”.

4.2.2 "Upper Housing
Removal"

4.2.1 "Printhead
Removal"

4.2.3 "Printer Mechanism
Removal"

4.2.4 "Board Assembly
and Panel Removal"

4.2.5 "C294MAIN/MAINB Board Assembly

4.2.6 "C294 Power Supply
Board Assembly

When you have to remove parts that are not described in this chapter, refer to the exploded
diagram on Appendix of this manual.
C A U T IO N

n Read 4.1.1 "Precautions" before start disassembling the printer.
n Remove ink ribbon and paper before disassembling the printer.

Flowchart 4-1. Disassembly Flowchart (Main Component)

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.1 Printhead Removal
Printhead

Remove the cover of the printer.

Remove 1 screw (C.P.B., Screw, 3x14 F/ZN; Torque 0.59-0.78N.m) securing the
printhead to the carriage assembly.

Lift the printhead a little bit. Unlatch 2 hooks securing the printhead FFC to carriage
unit.

Remove FFC from the printhead.
C A U T IO N

A D J U S T M E N T
R E Q U IR E D

C.P.B., Screw, 3x14 F/ZN

FFC

Carriage Assembly

Check if the printer is powered off before removing the printhead.

When the printhead is replaced, perform the platen gap adjustment.

Figure4-1. Printhead Removal

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.2 Upper Housing Removal
1.

Remove platen knob, cover assembly, printer, tractor unit and paper eject unit.
Remove the color upgrade kit if it is installed (LX-300+ only).

Set the release lever to the tractor feed.

Remove 4 screws for LX-300+ and 6 screws for LX-1170 (CBP, Tite, 3x10 F/Zn,
Torque 0.78-0.98) securing the upper housing to the lower housing.

.Remove the upper housing.
Upper Housing

C H E C K
P O IN T

When installing the upper housing, be sure to insert LEDs on
the panel board to the LED holes of the upper housing.
Upper Housing

C.B.P., Tite, 3x10 F/ZN

LED

Panel Board Assembly

CPB (3x10)

Figure4-2. Upper Housing Removal

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.3 Printer Mechanism Removal

LX-1170: Remove 4 screws with washer (C.B.B., (W(13), 3x14 F/ZN)
securing the printer mechanism to the lower housing.
See Figure 4-4 below.

Remove the upper housing. (See 4.2.2 "Upper Housing Removal".)

LX-300+: Remove 3 screws (C.B.P., Tite, 3x10 F/ZN;Torque 0.78-0.98 N.M.)
securing the upper shield plate to the lower housing.
LX-1170: Remove 4 screws (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.)
and 2 screws (C.B.S., Screw, 3x4 F/Zn;Torque 0.78-0.98 N.M.)
securing the upper shield plate to the lower housing.

Remove the shield cover.
Upper Shield Plate

C.B.P., Tite, 3x10 F/ZN)

C.B.B., (W(13), 3x14 F/ZN

Figure 4-4. Printer Mechanism Removal (LX-1170)
Printer Mechanism

Figure4-3. Upper Shield Plate (LX-300+)
4.

LX-300+: Remove 2 screws with washer (C.B.B., (W(13), 3x14 F/ZN)
securing the printer mechanism to the lower housing.
See Figure 4-3 on page 76.

Disassembly and Assembly

LX-300+/1170
5.

Revision C

Lift the printer mechanism a little bit and remove harnesses from the main board
assembly.
Printer Mechanism

Main Board Assembly

Figure4-5. Harness Removal
6.

Remove the printer mechanism.

A D J U S T M E N T
R E Q U IR E D

Perform Bi-D adjustment after removing the printer mechanism.

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.4 Board Assembly and Panel Removal

4.2.5 C294MAIN/MAIN-B Board Assembly Removal

Remove the upper housing. (See 4.2.2 "Upper Housing Removal".)

Remove the panel FFC from the connector of panel board assembly.

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove 3 screws (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.) securing the
panel board assembly to the lower housing.

LX-1170: Remove 1 screw (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.)
and the right grounding plate.

Remove the panel board assembly from the lower housing.

Grounding Plate, Right

C.B.P., Tite, 3x10 F/ZN

Table 4-5. Right Grounding Plate Removal (LX-1170)
Panel Board Assembly

Remove 2 Jack Sockets (Torque 0.29-0.49 N.M.)securing the serial interface
connector to the lower shield plate.

Remove the serial interface connector from the installation hole of the lower shield
plate.

Remove 2 screws (C.P., Screw, 3x4 F/ZN; Torque 0.48-0.78 N.M.) securing the
parallel interface to the lower shield plate.

Remove the option FFC (LX-300+ only) and panel FFC from CN12 and CN13 on the
board.

Remove the harness connected to the Power Supply Board Assembly from CN8.
Press one edge of CN8 in order to remove or install the harness.

Remove 3 screws (C.B.P., Tite, 3x10 F/ZN) securing the main board assembly to the
lower housing.

Panel FFC
C.B.P., Tite, 3x10 F/ZN

Figure4-6. Board Assembly and Panel Removal

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.6 C294 Power Supply Board Assembly Removal
A D J U S T M E N T
R E Q U IR E D

When the main board assembly is replaced, perform destination
setting and Bi-D adjustment.

Lower Shield Plate

C.P., Screw, 3x4 F/ZN

Remove the upper housing. (See 4.2.2 "Upper Housing Removal".)

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

LX-1170: Remove 1 screw(C.B.P., Tite, 3x10 F/ZN;Torque 0.78-0.98 N.M.)
and the left grounding plate.

LX-1170: Remove 1 screw (C.B(O), Screw, 4x8, F/ZN; Torque 0.98-1.18 N.M.)
and the grounding cable.

Hexagon Nut

C.B.P., Tite, 3x10 F/ZN
Grounding Plate, Left
C.B(O), Screw, 4x8 F/ZN

CN13
Grounding Cable
CN12
C.P., Screw, 3x4 F/ZN

Figure 4-8. Ground Plate and Cable Removal (LX-1170)
5.

Remove the power cable (CN1) connecting to the Power Supply board assembly.
Remove the power switch from the lower housing.

Remove the harness connecting the Power Supply board assembly to the main board
assembly. (CN8 of the main board assembly)
Press one edge of CN8 in order to remove or install the harness.

Remove 4 screws (C.B.P., Tite, 3x10 F/ZN; Torque 0.78-0.98 N.M.) securing the
Power Supply board assembly to the lower housing.

Remove the Power Supply board assembly.

CN8
Main Board Assembly

C.B.P., Tite, 3x10 F/ZN

Figure4-7. C294MAIN Board Assembly Removal

Disassembly and Assembly

LX-300+/1170

Power Switch

Revision C

C.B.P., Tite, 3x10 F/ZN

CN1

C.B.P., Tite, 3x10 F/ZN

4.2.7 Printer Mechanism Disassembly
This section explains the disassembling procedure of the printer mechanism. The
disassembling procedure is shown in the flowchart below.
START

4.2.7.1 "CR Motor
Assembly Removal"

CBP (3x10)

P/S Board Assembly

C.B.P., Tite, 3x10 F/ZN

4.2.7.3 "Carriage Unit
Removal"

4.2.7.4 "Ribbon Feed
Mechanism Removal"

4.2.7.5 "RPE Sensor
Removal"

4.2.7.7 "HP Sensor
Removal"

4.2.7.6 "BPE Sensor
Removal"

4.2.7.8 "PG Sensor
Removal"

4.2.7.2 "Platen
Removal"

4.2.7.9 "Release Lever
Position Sensor Removal"

Figure4-9. C294 Power Supply Board Assembly Removal

4.2.7.10 "PF Motor
Assembly Removal"

4.2.7.11 "Paper Feed
Mechanism Disassembly"

4.2.7.12 "Paper Guide
Removal"

Figure4-10. Printer Mechanism Disassembling Procedure

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.7.1 CR Motor Assembly Removal

4.2.7.2 Platen Removal

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the tension spring, 8.10 and motor bracket and release the tension of the
timing belt.

Remove the platen grounding wire from the platen.

Remove the timing belt from the pulley of the CR motor assembly.

Release 1 hook at the rotating hole of the combination gear 17.5, 27 and remove the
gear from the right frame.

Rotate the CR motor assembly with the motor bracket clockwise to remove it.
To unhook the combination gear 17.5, 27, hold
it and pull it to the arrow direction.

Timing Belt

Combination gear, 17.5, 27
Tension Spring, 8.10

Gear, 34

dis20_a

Figure4-12. Hook at the Combination Gear 17.5, 27

CR Motor Assembly
Base Frame

Rotate right and left bushing, 11 and remove them off from the right / left frame.

Remove the platen.

Figure4-11. CR Motor Assembly Removal
A D J U S T M E N T
R E Q U IR E D

When the CR motor assembly is replaced, perform Bi-D adjustment.

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.7.3 Carriage Unit Removal

Bushing, 11
Platen

Gear, 34

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the printhead. (See 4.2.1 "Printhead Removal".)

Remove the timing belt from the carriage installation point.
Carriage Unit

Left frame

Timing Belt

Bushing, 11

Platen grounding wire

Combination gear, 17.5, 27

Right frame

Figure4-13. Platen Removal

Installation Point

Figure4-14. Timing Belt Removal
4.

Disassembly and Assembly

Remove the CR shaft grounding plate from the base frame on the left side of the
printer.

Disassembly and Assembly

LX-300+/1170

Revision C

PG adjust lever

CR guide shaft
Carriage unit
CR guide grounding plate
Parallelism adjust bushing

Parallelism adjust bushing
PG Adjust Lever -- Hook
Oil pad

Figure4-16. Hook at the PG Adjust Lever
7.

Left frame

Remove the carriage unit along with the CR guide shaft and PG adjust lever from the
printer mechanism.

A D J U S T M E N T
R E Q U IR E D

When the carriage unit is replaced, perform Bi-D adjustment.

Base frame
Right frame

Figure4-15. Carriage Unit Removal
5.

Rotate the right and left parallelism adjust bushing and remove them from respective
frame.

Release the PG adjust lever hook, connecting to the left frame.

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.7.4 Ribbon Feed Mechanism Removal

4.2.7.5 RPE Sensor Removal

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the tension spring, 8.10 from the motor bracket and release the tension of the
timing belt. (See 4.2.7.1 "CR Motor Assembly Removal".)

Remove the hook of the RPE sensor installed at the paper guide.

Remove RPE sensor.

Release 3 hooks securing the RD cover to the left frame.

Remove the harness from the RPE sensor (white).

Remove the RD cover.
RPE sensor (white)

Planetary lever assy.
RD cover

RD ratchet

BPE sensor (yellow)

Timing belt

Driven pulley assy.

Combination gear, 51, 16.2
Gear, 13.2

Left frame

Combination gear, 51, 16.2
Paper guide

Figure4-18. RPE/BPE Sensor Removal

4.2.7.6 BPE Sensor Removal

Base frame

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the hook of the BPE sensor installed at the paper guide.

Remove BPE sensor.

Remove the harness from the BPE sensor (yellow).

Figure4-17. Ribbon Feed Mechanism Removal

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.7.7 HP Sensor Removal

4.2.7.8 PG Sensor Removal

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Release 2 hooks of the HP sensor securing it to the base frame with tweezers and
remove the sensor.

Release 2 hooks of the PG sensor securing it to the left frame with tweezers and
remove the sensor.

Remove the harness from the sensor (black).

Remove the harness from the sensor (white).

HP sensor (black)

Base frame
Hook

Hook

Figure4-19. HP Sensor Removal
Left frame

PG sensor (white)

Figure4-20. PG Sensor Removal

4.2.7.9 Release Lever Position Sensor Removal

Disassembly and Assembly

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Release 2 hooks of the release lever position sensor securing it to the right frame with
tweezers and remove the sensor.

Disassembly and Assembly

LX-300+/1170
3.

Revision C

4.2.7.10 PF Motor Assembly Removal

Remove the harness from the sensor (blue).
Release lever position sensor (blue)

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the platen grounding wire from the platen.

Remove 1 screw (C.B.P., Tite, 3x10 F/ZN; Torque 0.59-0.78 N.M.) securing the PF
motor assembly to the right frame.

Remove 1 hook at the right frame securing the PF motor assembly to the right frame
and remove the PF motor assembly.
Platen grounding wire

PF motor assembly
Position marking pin

C.B.P., Tite, 3x10 F/ZN

Figure4-21. Release Lever Position Sensor Removal

C A U T IO N

When installing the release lever position sensor, be sure to insert it
between the release lever and the right frame.

Hook at the right frame

Figure4-22. PF Motor Assembly Removal
C H E C K
P O IN T

Disassembly and Assembly

When installing the PF motor assembly to the right frame, be careful
to align the position marking pin and motor bracket position marking
hole.

LX-300+/1170

Revision C

4.2.7.11 Paper Feed Mechanism Disassembly

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the PF motor assembly. (See 4.2.7.10 "PF Motor Assembly Removal".)

Remove the combination gear, 8.5, 25.2 from the right frame.
Hook at the right frame

Combination spring, 1.18
Plain washer, 5.2 x 0.3 x 10

Combination gear, 8.5, 25.2

Remove the release lever.
Release shaft

Release lever

Figure4-23. Release Lever Removal
Gear, 27.5

C H E C K
P O IN T

When installing the release lever, be sure to align the marking on the
release lever with the marking on the release shaft.

Figure4-24. Paper Feed Mechanism Disassembly

Release the hook of the right frame securing the gear, 27.5 and remove the gear, plain
washer 5.2x0.3x10 and the compression spring, 1.18.

Disassembly and Assembly

LX-300+/1170

Revision C

4.2.7.12 Paper Guide Removal

Remove the printer mechanism. (See 4.2.3 "Printer Mechanism Removal".)

Remove the platen. (See 4.2.7.2 "Platen Removal".)

Remove the carriage unit. (See 4.2.7.3 "Carriage Unit Removal".)

Remove the HP sensor. (See 4.2.7.7 "HP Sensor Removal".)

Remove the PG sensor. (See 4.2.7.8 "PG Sensor Removal".)

Remove the PF motor assembly and release lever. (See 4.2.7.10 "PF Motor Assembly
Removal".)

Release 1 hook securing the paper guide to the bottom of the paper guide to the lower
paper guide, pull the paper guide to the rear and remove it.
Hook at the left frame

Release 1 hook at the left frame securing the base frame and remove it by pulling it to
the rear.

Base frame
Hook at the left frame

Paper guide

dis25_a

Figure4-26. Left Frame Removal
9.

Release 1 hook securing the paper guide to the lower paper guide and remove the paper
guide along with the release shaft by pulling it to the left.
Hook at the paper guide

Lower paper guide

Figure4-25. Lower Paper Guide Removal

Figure4-27. Lower Paper Guide

Disassembly and Assembly

LX-300+/1170

Disassembly and Assembly

Revision C

Disassembly and Assembly

CHAPTER

5
ADJUSTMENT

LX-300+/1170

Revision C

5.1 Overview
START

This chapter explains the adjustment required after disassembling the printer.

5.1.1 Platen Gap Adjustment

Move the carriage unit to the
left end.

Platen gap adjustment is required at the following cases.

o Printhead is replaced.
Is the platen gap
within the range of the
setting?

o Carriage is replaced.
o CR guide shaft is removed.

Adjust the platen gap at the
left end.

o Parallelism adjust bushing is removed.
Move the carriage unit to the
right end.

o Printing is too thin.
o Ink ribbon often gets jammed.
Follow the steps below before performing the platen gap adjustment.

Is the platen gap
within the range of the
setting?

Remove the upper housing. (Refer to Ch4.)

Set the PG adjust lever to “0”.

Remove the printhead and remove the ribbon mask.

Re-install the printhead.

Follow the procedure in the flowchart below for the adjustment.

Adjust the platen gap at the
right end.

Move the carriage unit to the
center.

Table 5-1. Adjustment Method
Platen Gap Setting
0415 ± 0.015mm

Judging Method

Is the platen gap
within the range of the
setting?

Thickness gauge 0.40mm falls down by its own weight: OK
Thickness gauge 0.43 mm does NOT fall down by its own
weight: NG

Table 5-2. Parallelism Adjust Bushing
Rotational direction of the parallelism adjust bushing

Platen gap

Platen side

Widen

Front side

Narrowed

END

Figure5-1. Platen Gap Adjustment

Adjustment

Overview

LX-300+/1170

5.1.2 Bi-D Adjustment

Revision C
5.

LX-300+: Load and run the adjustment program “Q80A12V.bas”.
Input “Q80A12V” and press ENTER. Then input “run”.
LX-1170f: Load and run the adjustment program “U10A00V.bas”.
Input “U10A00V” and press ENTER. Then input “run” and press ENTER.
Go to step 7.

LX-300+: The application select screen appears. Input “G” to select “GWBASIC”.
LX-1170: Not applicable.

Adjustment programs here for LX-300+ and LX-1170 are originally used for
production line. Bi-D adjustment is required in the following cases.

o Main board assembly is replaced.
o Printer mechanism is replaced.
o Printer mechanism is removed.
Follow the steps below for the platen gap adjustment.
1.

Connect the printer and the host computer by parallel interface cable.

Turn on the PC and the printer.

Set FF paper to the printer.

Insert FD that contains the adjustment program and click “GWBASIC.EXE” in the
disk to execute GWBASIC. The following DOS prompt screen appears.

Adjustment

Overview

LX-300+/1170
7.

The program will ask you the production line No. Ignore it and press ENTER.
LX-300+: After pressing ENTER, input “1”(model number) to select LX-300+.
LX-1170: After pressing ENTER, go to step 8.

Revision C
8.

LX-300+: Printer 9/24 pin select screen appears. Use ↑ and ↓ key to shift “>” mark to
the left of “(1) 9 pin” and press ENTER to select 9 pin printer.

LX-1170: Select “LX-1170” and press ENTER.

Adjustment

Overview

LX-300+/1170
9.

Revision C

The destination setting menu appears. Perform settings referring to Table 5-3,
“Destination Setting List,” on page 92.

Table 5-3. Destination Setting List
EUL
(MIDDLE EAST)
EAL

DEFSTD

ESP
EHK
LX-1170
EUR NLSP
Conti NLSP
EUL NLSP
(240V)
EUL NLSP
(220V)

The destination settings are as follows.Use ↑ and ↓ key or ← and → key to shift
“>” mark to the left of the appropriate destination and press ENTER to select
destination.

Table 5-3. Destination Setting List
Destination

NLSP

EUL (120V)

DEFSTD

RUSSIA

RISSIAN

ESP (Inter)

USASTD

Setting
LX-300+

EAI
USASTD
EAI (Latin)
EURO
EUL (SCANDINAVIA)
EFS
EURSTD
EIS,
EIB
EDG
EDG(NLSP)

Adjustment

NLSP

Overview

LX-300+/1170

Revision C

10. When you select the destination, the select menu below appears. Use ↑ and ↓ key to
shift “>” mark to the left of “Out Going” and press ENTER.

12. “Main MENU” appears. Use ↑ and ↓ key or ← and → key to shift “>” mark to the left
of “(1) Bi-D Adjust” and press ENTER.

11. LX-300+: On the next screen, you can input the number of printing columns per one
movement of the carriage. Since the carriage width of LX-300+ is 80,
use ↑ and ↓ key to shift “>” mark to the left of “(1) 80 column” and press
ENTER.
LX-1170: Not applicable. Go to step 12.

13. The printing mode select menu for Bi-D adjustment appears. Use ↑ and ↓ key to select
the printing mode and use ← and → key to select Bi-D setting.
Then press ENTER. If you press the SPACE bar, the fallowing printing pattern will
printed (Refer to Figure 5-2).

Adjustment

Overview

LX-300+/1170

Revision C

14. The following printing pattern which shows each mode number and current Bi-D
values will be printed.

17. By changing the VRO value, adjust the Bi -D. Repeat step 14 to 17 until the value “A”
becomes within the range below. Refer to Table 5-4, “Bi-D Adjustment Setting
Value,” on page 95 for appropriate Bi-D value.

Figure 5-2. Set Bi-D Values
15. At step14, if you press the SPACE bar, the Bi-D pattern for the selected mode will
be printed. For example, if you select Mode 0= VRO 0, the pattern below will be
printed.

Figure 5-3. Bi-D Printing Pattern-1(Model 0)
16. At step14, if you select Mode1=VRO 0 and press the SPACE bar, (1) Bi-D
printing patter will be printed. If Model 4=0, (2) will be printed.

Figure 5-4. Bi-D Printing Pattern-2(Mode1 &4)

Figure5-5. Bi-D Adjustment Pattern

Adjustment

Overview

LX-300+/1170

Revision C

Table 5-4. Bi-D Adjustment Setting Value
Printing Mode

Value “A”

mode 0 (High Speed draft)

Less than 0.25

mode 1 (Draft)

Less than 0.25

mode 4 (NLQ)

Less than 0.15

18. When you finished adjustment, finish the program by pressing “ESC” several times.
C A U T IO N

n This test program used here is originally the program for
n
n

Adjustment

production line. Operations that are not described in this
manual are forbidden thereafter.
The adjusted value will not be stored to the EEPROM on the
main board assembly until the printer is turned off.
Clear EEPROM by the panel operation does not clear Bi-D
setting.

Overview

CHAPTER

6
MAINTENANCE

Product Name

Revision C

6.1 Maintenance

Table 6-2. Lubrication Points

Appropriate maintenance is necessary to keep the printer in the best condition and prevent
from troubles.

Fig.

Lubrication Points

Lubrica
nt

Quantity

3 shafts and 2 bosses of the left frame

G-26

1/2 grain of rice

Shaft of RD ratchet

G-26

1 grain of rice

6-1

6.1.1 Cleaning
Use neutral detergent or diluted alcohol to clean the dirt on the outside. Vacuum dust or a
small piece of papers inside the printer.

6-2

Teeth of Gears at the left frame

G-26

1/2 grain of rice

6-3

3 places on the 3 shafts of the right frame

G-26

1 grain of rice

n When performing the maintenance, remove the AC cable from

6-4

2 places on inside of cam at slope surface of the
release lever

G-26

1 grain of rice

6-5

Shaft of the PF roller drive and the rear driven PF
roller.

G-26

1/2 grain of rice

6-6

Paper guide from the back side at 4 places

G-26

1 grain of rice

6-7

Hole of the right tractor assy frame faces to the
tractor assy guide shaft and the left TR frame.

G-26

1/2 grain of rice

6-8

Oil pad

O-2

0.28-0.32cc

6-9

Touching parts of the 2 sides of the base frame.

G-26

40mm x 2 places

6-10

2 touching position with the CR motor assembly
from the inside of the base frame.

G-26

1/2 grain of rice
x2

6-11

Installing shaft of the combination gear, 17.5, 27 of
the right frame.

G-26

1/2 grain of rice

Touching position of the grounding platen spring
with platen shaft.

G-26

1 grain of rice

Spur gear 34

G-26

10mm

W A R N IN G

C A U T IO N

the AC socket.
Never touch the printhead right after printing, as it is highly
heated.

n Never use thinner, tricren, or ketone solvent, as it may deform or
deteriorate the plastic parts or rubber parts.

n Use the specified amount of the specified oil.

6.1.2 Lubrication
The lubrication point of LX-300+/1170 is as shown in the following table. Refer to the table
for the type and the amount of oil to be used for each point. Oil and grease have a great
affect on the performance of the product, especially on the durability and the performance
at the lower temperature. EPSON determines what kind of and how much of oil to be
applied based on the various information and analysis.

Table 6-1. Lubricants

NOTE: Lubrication must be applied during the re-assembly process.
For lubrication points, refer to the following figures.

Type

Name

Quantity

Availability

Part No.

Grease

G-26

40g

EPSON

B702600001

Oil

O-2

40cc

EPSON

B710200001

Maintenance

6-12

Maintenance

Product Name

Revision C

Lubrication Points

Lubricate G-26 on the 3 shafts and 1 boss
of the left frame.
G-26, 1/2 grain of rice
Lubricate G-26 at 3 places on 3 shafts at
the right frame.

Lubricate G-26 on the shaft of the RD
ratchet.
G-26, 1 grain of rice

Shafts at the right frame assembly:
G-26, 1 grain of rice

RD ratchet shaft

Combination Gear 5.1, 16.2
Driven pulley assy.

Planetary lever assy.

Spur
Spur Gear,
Gear, 13.2
13.2

Figure 6-3. Shafts at the Right Frame Assembly

RD ratchet

Lubricate G-26 at 2 places on inside of cam
at slope surface of the release lever.

Figure 6-1. Left Frame Assembly

Release lever:
G-26, 1 grain of rice

Lubricate G-26 on teeth of gears.
G-26, 1/2 grain of rice

Figure 6-4. Release Lever

Figure 6-2. Teeth of Gears at the Left Frame

Maintenance

Product Name

Revision C

Drive PF roller

Lubricate G-26 to the shaft of the drive
PF roller and the rear driven PF roller.
(4 places)

Lubricate G-26 into the hole of the right
TR (tractor) frame facing to the TR
guide shaft and the left TR frame.

PF roller assembly:
G-26, 1/2 grain of rice

Tractor assembly:
G-26, 1/2 grain of rice

Rear driven PF roller

Figure 6-5. PF Roller Assembly

Release shaft
Paper guide assy.

Set the paper guide assembly upside
down and lubricate at the touching part
of the PF roller assembly with the
release shaft. (4 places)
Paper guide assembly:
G-26, 1 grain of rice

Figure 6-7. Tractor Assembly

Oil Pad

The picture at the left is the back of the
printhead.
1. Set the oil dispenser 0.30ml.
2. Lubricate O-2 on the Oil pad.

Oil pad:
O-2, 0.28-0.32 cc
Note: Make sure that the setting of the oil
dispenser is correct.

Figure 6-6. Paper Guide Assembly

Figure 6-8. Oil Pad

Maintenance

Product Name

Revision C

Move the carriage around the center,
then lubricate G-26 on the touching
parts of the 2 sides of the frame.

Lubricate G-26 on the installing shaft of
the Combination Gear, 17.5, 27 of the
right frame.

Carriage:
G-26, 40mm x 2 places

Combination gear 17.5, 27:
G-26, 1/2 grain of rice

Figure 6-9. Carriage

Figure 6-11. Combination Gear 17.5, 27

Lubricate G-26 on the 2 touching
position with CR motor assembly from
the inside of the base frame.
CR motor assembly:
G-26, 1/2 grain of rice x 2

Lubricate G-26 to the touching position
of the platen grounding spring with
Platen shaft and the spur gear 34.
Platen grounding spring:
G-26, 1 grain of rice.
Spur Gear:
G-26, 10mm

Figure 6-12. Platen Grounding Spring / Spur Gear
Figure 6-10. CR Motor Assembly

Maintenance

100

CHAPTER19

7
APPENDIX

LX-300+/1170

Revision C

7.1 Connector Summary

7.1.2 Pin Assignments
Table 7-1. C294MAIN-B Board Connector Summary

7.1.1 Major Component Unit

Connector

The figure below illustrates how the primary components are connected.
CS motor is only available for LX-300+.

Function

Pins

CN1

Parallel I/F

CN2

Serial I/F

CN3

HP Detector

CN4

PE (Rear) Sensor

CN5

Release Detector

CN6

PE (bottom) Detector

CN7

PG Detector

CN8

Power Board C294PSB/PSE

CN9

Printhead

CN10

CR Motor

CN11

PF Motor

CN12

CS Motor (Option)

CN13

Operation Panel C294PNL

Table 7-2. Connector Pin Assignments - CN3
Pin

I/O

Signal Name

GND

Function
Carriage home position sensor signal
Signal ground

Table 7-3. Connector Pin Assignments - CN4
Pin

I/O

Signal Name

Function

RPE

Rear paper end sensor signal

GND

Signal ground

Figure 7-1. Cable Connections

Appendix

Connector Summary

104

LX-300+/1170

Revision C

Table 7-8. Connector Pin Assignments - CN9

Table 7-4. Connector Pin Assignments - CN5
Pin

I/O

Signal Name

RELEASE

GND

Function

I/O

Signal Name

Release sensor signal

HD7

Head data 7

Signal ground

HD1

Head data 1

HD5

Head data 5

HD3

Head data 3

HDCOM

Common (VP)

HDCOM

Common (VP)

HDCOM

Common (VP)

HD2

Head data 2

HD9

Head data 9

Paper gap (copy mode) sensor signal

HD4

Head data 4

Signal ground

HD8

Head data 8

HD6

Head data 6

Table 7-5. Connector Pin Assignments - CN6
Pin

I/O

Signal Name

GND

Function
Paper end sensor signal
Signal ground

Table 7-6. Connector Pin Assignments - CN7
Pin

I/O

Signal Name

GND

Function

Table 7-7. Connector Pin Assignments - CN8
Table 7-9. Connector Pin Assignments - CN10

I/O

Signal Name

+35VDC

I/O

Signal Name

+35VDC

CRA

Carriage motor phase A

Signal ground

CRA

Carriage motor phase A

Signal ground

CRB

Carriage motor phase B

PSC

Power save control

CRB

Carriage motor phase B

POFF

Power off signal

+5V

+5VDC

+5V

+5VDC

Appendix

Function

Connector Summary

Function

105

LX-300+/1170

Revision C
Table 7-12. Connector Pin Assignments - CN13

Table 7-10. Connector Pin Assignments - CN11
Pin

I/O

Signal Name

Function

PFA

Paper feed motor phase A

PFA

Paper feed motor phase A

PFB

Paper feed motor phase B

PFB

Paper feed motor phase B

Table 7-11. Connector Pin Assignments - CN12
Pin

I/O

Signal Name

Function

+35VDC

CS/HOLD

+5VDC

+5V

+5VDC

CSA

CS motor phase A

CSXA

CSB

CSXB

CSSW

Color ribbon sensor signal

GND

Signal ground

I/O

Signal Name

Function

LED1

SW1

Switch 1

GND

Signal ground

GND

Signal ground

SW2

Switch 2

SW3

Switch 3

SW4

Switch 4

CS motor phase XA
CS motor phase B
CS motor phase XB
Signal ground

Table 7-12. Connector Pin Assignments - CN13
Pin

I/O

Signal Name

+5V

LED5

LED4

LED3

LED2

Appendix

Function
+5VDC

Connector Summary

106

LX-300+/1170

Revision C

7.2 EEPROM Address Map

Table 7-13. EEPROM Address Map (continued)
Address

This section provides the EEPROM address map.
NOTE: The data of two or more byte are assigned as lower byte to lower address
and higher byte to higher address.
*1: The data are fixed by each printer hardware in the factory. The data
should not be changed afterwards.

Explanation

Setting

QPIT
Settings

Factory
Settings

00H

00000000
H

Area 0
00H03H

Reserved

04H07H

Driving Line count
for ribbon change
timing

0-0FFFFFFFFH(count)
See Remote spec TLcmd

08H0BH

Driving Hour

0-0FFFFFFFFH(minute)
See Remote spec TLcmd

00000000
H

0CH0FH

Driving Line count

0-0FFFFFFFFH(count)
See Remote spec TLcmd

00000000
H

10H

Starting Year

0-99(the last two figures of Anno
Domini)
See Remote spec SDcmd

00H

11H

Starting Month

0-12
See Remote spec SDcmd

00H

12H

Starting Data

0-31
See Remote spec SDcmd

00H

13H

Backup Flag1

b0: In Tear Off state (0=No,
1=Yes)
b1 to b7: Reserved

00H

14H,15
H

Paper edge length

Appendix

0 to 22x432 by 0.0588mm
(1/432inch)

00H

QPIT
Settings

Factory
Settings

0000H
(PC437)

0000H

Area1

Table 7-13. EEPROM Address Map
Address

Setting

22H,23
H

Character table
selection

0: PC437
21: Code MJK
1: PC850
22: Bulgaria
2: PC860
23: Estonia
3: PC863
24: PC774
4: PC865
25: IC8859-2
5: PC861
26: PC866LAT
6: BRASCII
27: PC866UKR
7: Abicomp
28: Hebrew 7
8: ISO Latin 1 29: Hebrew 8
9: Roman 8
30: PC862
10: PC437Greek 31: PCAPTEC
11: PC852
32: PC708
12: PC853
33: PC720
13: PC855
34: PCAR864
14: PC857
35: PC858
15: Reserved
36: ISO 8859-15
16: PC866
37: PC771
17: PC869
18: ISO Latin 1T
19: ISO 8859-7
20: MAZOWIA
40: Italic U.S.A
41: Italic France
42: Italic Germany
43: Italic U.K.
44: Italic Denmark
45: Italic Sweden
46: Italic Italy

24H,25
H

Page langth for
tractor

EEPROM Address Map

1 to 22x432 by 0.0588mm (1/432
inch)
0000H: 279.4mm (11 inches:
same as default

107

LX-300+/1170

Revision C

Table 7-13. EEPROM Address Map (continued)
Address

Explanation

Setting

Table 7-13. EEPROM Address Map (continued)

QPIT
Settings

Factory
Settings

Address

0000H

3AH,
3BH

Reserved

3CH

Font selection

0: Draft
1: Roman
2: Sans serif

3DH

Pitch selection

0: 10 cpi
1: 12 cpi
2: 15 cpi

3EH,
3FH

Reserved

40H

Print direction
setting

41H43H

Reserved

26H,27
H

Reserved

28H,29
H

1 to 22x432 by 0.0588mm (1/432
inch)
Page langth for CSF
0000H: 558.8mm (22 inches:
same as default

0000H

Reserved

0000H

0000H
(8.5mm)

2AH,
2BH

2CH,
2DH

2EH,
2BH

TOP adjustment
value for tractor

-144 to 432 (0.0mm to 8.5mm
+25.4mm (inch), by 0.0588mm
(1/432 inch))
*Minimum value depends on the
value of 5CH-5DH

Reserved

30H 31H

TOP adjustment
value for CSF

32H,
33H

Reserved

34H 35H

TOP adjustment
value for rear
manual insertion

36H,
37H

Reserved

38H,
39H

Bottom margin for
tractor

0000H
-144 to 432 (0.0mm to 8.5mm
+25.4mm (inch), by 0.0588mm
(1/432 inch))
*Minimum value depends on the
value of 5CH-5DH

0000H

0000H
(8.5mm)

0000H

44H

Appendix

-144 to 432 (0.0mm to 8.5mm
+25.4mm (inch), by 0.0588mm
(1/432 inch))
*Minimum value depends on the
value of 5CH-5DH

1 to 22x432 by 0.0588mm (1/432
inch)
0000H: 279.4mm (11 inches:
same as default

0000H
(8.5mm)

0000H

Explanation

Auto line feed
Auto tear off
Skip over
perforation
High speed draft
-------------

EEPROM Address Map

Setting

3: 17 cpi
4: 20 cpi
5: Proportional

0: Bi-d.
1: Uni-d

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: Reserved
b5: Reserved
b6: Reserved
b7: Reserved

QPIT
Settings

Factory
Settings

0000H

00H
(Draft)

00H
(10cpi)

0000H

00H
(Bi-d)

0000H

00H

108

LX-300+/1170

Revision C

Table 7-13. EEPROM Address Map (continued)
Address

Explanation
Software

45H

0 slash
Buzzer
---Auto CR
----------

46H49H

4AH

4BH

4CH

Setting
b0: Software
(0:ESC/P 1:IBM 2381 Plus)
b1: 0 slash (0: off 1: on)
b2: Buzzer (0: on 1:off)
b3: Reserved
b4: Auto CR(IBM) (0: off 1:
on)
b5: Reserved
b6: Reserved
b7: Reserved

Reserved

Panel mask pattern
1

Panel mask pattern
2

Manual feed wait
time

Appendix

QPIT
Settings

00H

b0: Font function is masked.
b1: Reserved
b2: Pause function is masked.
b3: Reserved
b4: Reserved
b5: Reserved
b6: Reserved
b7: Reserved
3 to 30 (by 0.1 sec.), 00H: 1.5 sec.
(same as default)

Factory
Settings

Address

00H

00H
(1.5 sec.)

Explanation

Factory
Settings

3 to 30 (by 0.1 sec.), 00H: 3 sec.
(same as default)

00H
(3 sec.)

4EH,
4FH

Tear-off adjustment
value

-432 to +432 (-25.4mm(-1inch) to
0mm +25.4mm (inch), by
0.0588mm (1/432 inch))

0000H

Serial baud rate

0: 19200 bps
1: 9600 bps
2: 4800 bps
3: 2400 bps
4: 1200 bps
5: 600 bps
6: 300 bps

00H
(19200)

51H

Serial parity

0: None
1: Even
2: Odd
3: Ignore

00H
(None)

52H

Input Buffer

0: On (8kbyte)
1: Off (1byte)

00H

53H

Packet mode

0: Auto
1: On
2: Off

00H

54H

Parallel I/F
bidirectional mode ---

b0: Reverse Channel Transfer
(0: on 1:off)
b1 to b7: Reserved

00H

55H

I/f mode selection

0: Auto I/F selection
1: Parallel I/F
2: Serial I/F

00H
(Auto)

56H

Auto I/F wait time
setting

10: 10 sec.
30: 30 sec.
00: 10 sec. (same as default)

00H
(10 sec.)

00H

QPIT
Settings

Tear-off wait time

00H

Setting

4DH

50H

00H
b0: LOAD/EJECT function is
masked.
b1: LF/FF function is masked.
b2: TEAR OFF function is
masked.
b3: Micro Adjust function is
masked.
b4: Reserved
b5: Reserved
b6: Reserved
b7: Reserved

Table 7-13. EEPROM Address Map (continued)

00H
(1.5 sec.)

EEPROM Address Map

109

LX-300+/1170

Revision C

Table 7-13. EEPROM Address Map (continued)
Address
57H
58H

Explanation
Reserved
*ACK timing data

59H

*ACK timing data
(complement of
58H)

5AH,
5BH

Reserved

5CH,
5DH

TOF Minimum
value

5EH

Copy mode
Energy save mode
----

5FH

Setting

Refer to Appendix E. I/F timing
data

-144 to -72, 0: -72 (4.2mm)
When it is bigger than -72, the
value is considered as -72.
b0: Copy mode (0: off 1: on)
b1: Energy save mode (0: on 1:
off)
b2 to b7: Reserved

Reserved

60H,
61H

Page length for rear
manual insertion

1 to 22x432 by 0.0588mm (1/432
inch)
0000H: 558.8mm (22 inches:
same as default

62H

Data length

0: 8 bit
1: 7 bit

63H67H

Reserved

Area 2
68CH6AH

Sub-number of
customization

6BH

Reserved

6CH

Market

Appendix

00H to 09H

0: Standard version
1: NLSP version

Table 7-13. EEPROM Address Map (continued)

QPIT
Settings

Factory
Settings

00H

01H

00H

0000H

Address

Explanation

6DH

IBM character table

6DH

IBM character table

6EH

Fatal Error

6FH

Printable column

QPIT
Settings

Factory
Settings

0: Table2
1: Table1

00H

0: Table2
1: Table1

00H

01H

Setting

0: 80 columns
1: 136 columns

Area 3
00H

00H

70H

Vp adjustment
value

71H

Vp adjustment
value
(complement of
70H)

72H

Bi-d adjustment
value for high speed
draft mode

-12 to +12 by 0.0353mm (1/720
inch)

00H

73H

Bi-d adjustment
-12 to +12 by 0.0353mm (1/720
value for draft mode inch)

00H

0000H

00H

74H

Bi-d adjustment
value for NLQ
mode

00H

75H

Reserved

00H

76H

Reserved

00H

000000H
(Standard)

77H

2 in 1 board

00H

78H7FH

Reserved

00H

EEPROM Address Map

-12 to +12 by 0.0353mm (1/720
inch)

0: Yes
1: No

110

LX-300+/1170

Revision C

7.3 Component Layout

C294 MAIN BOARD

Component layouts for each electric circuit board are shown as follows.

Figure 7-2. C294 MAIN Board Component Layout

Appendix

Component Layout

111

LX-300+/1170

Revision C

C294 MAIN-B BOARD

Figure 7-3. Component Layout-C294 MAIN-B Board

Appendix

Component Layout

112

LX-300+/1170

Revision C

C294PSB BOARD

C294PSE BOARD

Figure 7-4. Component Layout-C294PSB

Appendix

Figure 7-5. Component Layout-C294PSE

Component Layout

113

LX-300+/1170

Revision C

C294PNL BOARD

Figure 7-6. Component Layout-C294PNL

Appendix

Component Layout

114

LX-300+/1170

Revision C

7.4 Exploded Diagrams
o LX-300+ Exploded Diagrams
180
109
105

570

124

127

127(126/for EAI)

451

111
127

128

127

128

127

127
127
127

127

115

103

127

190

450
320

300

200
123
118
132

127

117
132

120

125
116
129
100

131

106
400
102
500

117
119

129

104

401

400

320
101

127

130

200
102

LX-300+
No.01
Rev.01
Figure 7-7. LX-300+ Exploded Diagram 1

Appendix

Exploded Diagrams

10202

115

LX-300+/1170

Revision C

554

512
526
514

516

527

556
525

541

551

553
526

527

505

513
544

510
509

510

528
521

532

559
528

555
558
520
522

523

552
557

542

550

577
501
651

518

529

530

524
650

543
559

579
539

517

535
545

514

571

581

531
563

502

576

540

537

567

536

534

538

566

542

565

533
532

562

531

506

561

590
559

564
559

569

503

575

568

560
574

578
581

511

581

515
580

573
581

514

504
581

LX-300+

No.02

Rev.01

10202

Figure 7-8. LX-300+ Exploded Diagram 2

Appendix

Exploded Diagrams

116

LX-300+/1170

Revision C

o LX-1170 Exploded Diagrams
105

550

107

547

180
519
550

109

550

549
550
119
300

119

119
450

103

128

119

126

111

128
119

451 119

119

200

119

119
124

119 121

128

119

122

120

118

119

123

125
530

117

129

116

320

129

117

106

530
104

129
129

401
500

100

400

400
130

LX-1170 No.01

Rev.01 10309

Figure 7-9. LX-1170 Exploded Diagram 1

Appendix

Exploded Diagrams

117

LX-300+/1170

Revision C

512

514
544

513

516
505
510
509 119

510

525
528

541

508
518

557
551

526
525

558

527
526

524
523

542

501

553
527

528

559

532

526
525
528

558

554

527

526

552

527

594

525
528

556
555

521

546

520 522

650

593

119
539

517

562

529

535

592

545

540

537

514

538

543
571

536

563

506

531
534

567
533
532

561

565

590

566

531

542
502

559

569
514

651

511

503

560
651

504

LX-1170 No.02

568 564

515

Rev.01 10309

Figure 7-10. LX-1170 Exploded Diagram 2

Appendix

Exploded Diagrams

118

LX-300+/1170

Revision C

7.5 Parts List

Table 7-14. LX-300+ Parts List
Number

Parts Name

The following table shows parts name of this product. Refer to the exploded diagrams for
parts’ number.

128

C.B.S. SCREW

o Parts List for LX-300+

129

“C.B.B-TITE(P(13)),3X14,F/ZN”

130

C.B.(O) SCREW 4X8 F/ZG

131

C.P.SCREW

132

C.B.S. SCREW

180

“GUIDE,STACKER”

200

“BOARD ASSY.,MAIN”

320

HARNESS

300

“BOARD ASSY.,POWER SUPPLY”

400

POWER CABLE ASSY.

450

“BOARD ASSY.,PANEL”

451

“SHEET,PANEL”

500

“PRINTER MECHANISM,M-3M10-100”

501

“FRAME,LEFT” (This name is not fixed.)

502

“FRAME,RIGHT”

503

“MOTOR ASSY.,CR”

504

“EXTENSION SPRING,8.10”

505

“LEVER ASSY.,PLANET”

506

“SHAFT,CR,GUIDE”

509

“SPURGEAR,13.2”

510

“COMBINATIONGEAR,5.1,16.2”

511

“MOTOR ASSY.,PF”

512

“COVER,RD”

513

“RATCHET,RD”

514

“DETECTOR,LEAF,B1”

Table 7-14. LX-300+ Parts List
Number

Appendix

Parts Name

100

“HOUSING ASSY.,LOWER”

101

INSULATOR;A

102

INSULATOR;B

103

“HOUSING,UPPER”

104

“SHIELDPLATE,LOWER”

105

“COVER ASSY.,PRINTER”

106

KNOB;W

109

SHEET GUIDE ASSY.

111

“SHIELDPLATE,UPPER”

115

“COVER CONNECTOR,CS;W”

116

HEXAGON NUT

117

GROUNDINGPLATE

118

“GROUNDING PLATE,PANEL”

119

EDGING;A

120

LOGO PLATE

123

“FERRITE CORE,FPC-25-20”

124

“SHEET,PROTECT”

125

CONNECTOR LOCK NUT

126

RIVET B-TITE(SCREW TYPE)

127

“C.B.P-TITE,3X10,F/ZN”

Parts List

119

LX-300+/1170

Revision C
Table 7-14. LX-300+ Parts List

Number

Appendix

Table 7-14. LX-300+ Parts List

Parts Name

Number

Parts Name

515

“GROUNDING WIRE,PLATEN”

541

TIMING BELT

516

“PULLEY ASSY.,DRIVEN”

542

“BUSHING,PARALLEL,ADJUST”

517

“HARNESS,HP”

543

“CABLE,HEAD”

518

C.P.B SCREW

544

“HARNESS,PG”

520

PAPER GUIDE

545

“PAPER GUIDE,LOWER”

521

“DETECTOR,PE,REAR”

550

“SPURGEAR,17”

522

“HARNESS,PE,REAR”

551

PAPERSUPPORT

523

“DETECTOR,PE,BOTTOM”

552

“FRAME,TR,RIGHT”

524

“HARNESS,PE,BOTTOM”

553

“FRAME,TR,LEFT”

525

“HOLDER,ROLLER,PF”

554

“TRACTOR,LEFT”

526

“ROLLER,PF,DRIVEN”

555

“TRACTOR,RIGHT”

527

“ROLLER,PF,DRIVEN,REAR”

556

“SHAFT,TR,GUIDE”

528

“COMPRESSION SPRING,13.72”

557

“SHAFT,TR,DRIVE”

529

“SHAFT,RELEASE”

558

RETAINING RING

530

PAPER GUIDE ASSY.

559

DAMPER

531

RETAINING RING

560

“FRAME,BASE”

532

“BUSHING,11”

561

“PAPER GUIDE,SUPPORT”

533

“U-TYPE,11.2X0.13X16S/NA”

562

“GROUNDING PALTE,SHAFT,CR”

534

PLAIN WASHER

563

“SHEET,CABLE,HEAD”

535

PLATEN

564

“GEAR,34”

536

CARRIAGE ASSY.

565

“SPUR GEAR,27.5”

537

“GROUNDING PALTE,HEAD”

566

PLAIN WASHER

538

OIL PAD

567

“COMPRESSION SPRING,1.18”

539

“LEVER,G,ADJUST”

568

“COMBINATION GEAR,8.5,25.2”

540

RIBBON MASK

569

“HARNESS,RELEASE”

Parts List

120

LX-300+/1170

Revision C
Table 7-14. LX-300+ Parts List

Number

Appendix

o Parts list for LX-1170
Table 7-15. LX-1170 Parts List

Parts Name

570

PAPER EJECT ASSY.

571

“COMBINATION GEAR,17.5,27”

100

"HOUSING ASSY.,LOWER"

573

“GROUNDING PLATE,CS”

103

"HOUSING,UPPER"

574

“GROUNDING WIRE,LEFT”

104

"SHIELD PLATE,LOWER"

575

“GROUNDING WIRE,RIGHT”

105

"COVER ASSY.,PRINTER"

576

“GROUNDING PLATE,PF”

106

KNOB

577

“SHEET,PROTECT,CABLE”

107

"COVER ASSY.,PRINTER,REAR"

578

“SHEET,PROTECT,M/B”

109

SHEET GUIDE ASSY.

579

“SHEET,CABLE,CR”

111

"SHIELD PLATE,UPPER"

580

“C.B.P-TITE,3X10,F/ZN”

116

HEXAGON NUT

581

C.B.S. SCREW

117

GROUNDING PLATE

590

“LEVER,RELEASE”

118

"GROUNDING PLATE,PANEL"

650

“PRINT HEAD,D3910-1”

119

"C.B.P-TITE,3X10,F/ZN"

651

“LABEL,WARNING”

120

LOGO PLATE

121

"GROUNDING PLATE,L"

122

"GROUNDING PLATE,R"

123

"FERRITE CORE,FPC-25-20"

124

"SHEET,PROTECT,L"

125

CONNECTOR LOCK NUT

126

"SHEET,PROTECT,R"

128

C.B.S. SCREW

129

"C.B.B-TITE(P(13)),3X14,F/ZN"

130

C.B.(O) SCREW 4X8 F/ZG

180

"GUIDE,STACKER"

200

"BOARD ASSY.,MAIN"

Number

Parts List

Parts Name

121

LX-300+/1170

Revision C
Table 7-15. LX-1170 Parts List

Number

Appendix

Table 7-15. LX-1170 Parts List

Parts Name

Number

Parts Name

450

"BOARD ASSY.,PANEL"

519

"ROLLER,PAPER EJECT"

451

"SHEET,PANEL"

520

PAPER GUIDE

300

"BOARD ASSY.,POWER SUPPLY"

521

"DETECTOR,PE,REAR"

320

HARNESS

522

"HARNESS,PE,REAR"

400

"POWER CABLE,BS31303SA-SR-10A"

523

"DETECTOR,PE,BOTTOM"

401

HARNESS

524

"HARNESS,PE,BOTTOM"

500

"PRINTER MECHANISM(ASP),M-3N60-100"

525

"HOLDER,ROLLER,PF"

501

"FRAME ASSY.,LEFT"

526

"ROLLER,PF,DRIVEN"

502

"FRAME,RIGHT"

527

"ROLLER,PF,DRIVE,REAR;B"

503

"MOTOR ASSY.,CR"

528

"COMPRESSION SPRING,13.72"

504

"EXTENSION SPRING,8.10"

529

"SHAFT,RELEASE"

505

"LEVER ASSY.,PLANET"

531

RETAINING RING

506

"SHAFT,CR,GUIDE"

532

"BUSHING,11"

507

RETAINING RING

533

"U-TYPE,11.2X0.13X16S/NA"

508

"GROUNDING PLATE,PAPER GUIDE,UPPER"

534

PLAIN WASHER

509

"SPURGEAR,13.2"

535

PLATEN

510

"COMBINATIONGEAR,5.1,16.2"

536

CARRIAGE SUB ASSY.

511

"MOTOR ASSY.,PF"

537

"GROUNDING PLATE,HEAD"

512

"COVER,RD"

538

OIL PAD

513

"RATCHET,RD"

539

"LEVER,G,ADJUST"

514

"DETECTOR,LEAF,B1"

540

RIBBON MASK

515

"GROUNDING WIRE,PLATEN"

541

TIMMING BELT

516

"PULLEY ASSY.,DRIVEN"

542

"BUSHING,PARALEL,ADJUST"

517

"HARNESS,HP"

543

"CABLE,HEAD"

518

C.P.B SCREW

544

"HARNESS,PG"

Parts List

122

LX-300+/1170

Revision C
Table 7-15. LX-1170 Parts List

Number

Appendix

Table 7-15. LX-1170 Parts List

Parts Name

Number

Parts Name

545

"PAPER GUIDE,LOWER"

590

"LEVER,RELEASE"

546

"PAPER GUIDE,UPPER"

592

"SHEET,CABLE,CR"

547

"BASE,PAPER EJECT"

593

"SPURGEAR,17"

549

"COVER,PAPER EJECT"

594

RETAINING RING

550

"LAEF SPRING,PAPER EJECT"

650

"PRINT HEAD,D3910-1"

551

PAPERSUPPORT

651

"DUMPER,FRAME,BASE"

552

"FRAME,TR,RIGHT"

553

"FRAME,TR,LEFT"

554

"TRACTOR,LEFT"

555

"TRACTOR,RIGHT"

556

"SHAFT,TR,DRIVE"

557

"SHAFT,TR,GUIDE"

558

RETAINING RING

559

DAMPER

560

"FRAME,BASE"

561

"PAPER GUIDE,SUPPORT"

562

"GROUNDING PALTE,SHAFT,CR"

563

"SHEET,CABLE,HEAD"

564

"GEAR,34"

565

"SPUR GEAR,27.5"

566

PLAIN WASHER

567

"COMPRESSION SPRING,1.18"

568

"COMBINATION GEAR,8.5,25.2"

569

"HARNESS,RELEASE"

571

"COMBINATION GEAR,17.5,27"

Parts List

123

LX-300+/1170

Revision C

7.6 Electric Circuit Schematics
o C294MAIN Board
o C294MAIN-B Board
o C294PSB Board
o C294PSE Board
o C294PNL

Appendix

Electric Circuit Schematics

124

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Producer                        : Acrobat Distiller 4.05 for Windows
Title                           : LX300+_1170.BOOK
Modify Date                     : 2001:04:16 14:26:18+09:00
Create Date                     : 2001:04:16 14:14:32
Creator                         : FrameMaker 6.0
Page Count                      : 129
Page Mode                       : UseOutlines

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Epson LX300+_1170 Service Manual LX 1170

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