Epson LQ-300 Service Manual

EPSON

TERMINAL

PRINTER

LQ-300

SERVICE MANUAL

EPSON

NOTICE

All rights reserved. Reproduction of any part of this manual in any form whatsoever without
SEIKO EPSON’s express written permission is forbidden.

The contents of this manual are subjects to change without notice.
Alleffortshavebeen made toensuretheaccuracy of

thecontentsofthis

manual. However, should

any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
The above notwithstanding SEIKO EPSON can

assume no

responsibility for any errors in

this

manual or the consequence thereof.
Epson is registered trademark of Seiko Epson Corporation.
General Notice: Other product names used herein are foridentication purposes only and maybe

trademarks of their respective

Copyright @ 1994 by SEIKO EPSON CORPORATION

carnpanies.

-i-

Nagano,

Japan

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1) personal injury and 2)
damage to equipment.

DANGER

Signals a precaution which, if ignored, could result in serious or fatal personal injury.

Great caution should be exercised in performing procedures preceded by DANGER
Headings.

WARNING

Theprecautionary measures itemized below should alwaysbe observed when performin

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

grepair/

maintenance procedures.

DANGER

1.

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

2.

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

3.

WHEN PERFORMING TESTING AS DICTATED

WITHIN THIS MANUAL, DO NOT
CONNECT THE UNITTOA 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.

UNTAMILIARWITH

WARNING

1.

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

MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLT-

2.

AGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF

HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO
NOT CONNECT IT TO THE POWER SOURCE.

3.

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

4.

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

5.

REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS
BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE
NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY
APPLICABLE EPSON WARRANTY.

THE

EPSON PRODUCT

Ics

OR OTHER

- ii -

PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair
of

LQ-300.

The instructions and procedures included herein are intended for the experience repair technician, and
attention should be given to the precautions on the preceding page. The chapters are organized as
follows:

CHAPTER 1. PRODUCT DESCRIPTION

Provides a

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of printer operation.

CHAPTER 3. DISASSEMBLY AND ASSEMBLY

Includes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENTS

Includes a step-by-step guide for adjustment.

general product overview, lists specifications, and illustrates the main components of the printer.

CHAPTER 5. TROUBLESHOOTING

Provides Epson-approved techniques for adjustment.

CHAPTER 6. MAINTENANCE

Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.

APPENDIX

Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.

The contents of this manual are subject to change without notice.

-

iv -

REVISION SHEET

f=”:

Revision

Rev. A

Issue Date

September 28, 1994

Revision Page

1st issue

-v-

.-..>

.$...

.,,

.

1

TABLE OF CONTENTS

CHAPTER 1.
CHAPTER 2.
CHAPTER 3.

CHAPTER

CHAPTER 5.
CHAPTER 6.

APPENDIX

4.

PRODUCT DESCRIPTION
OPERATING PRINCIPLES
DISASSEMBLY

AND ASSEMBLY
ADJUSTMENTS
TROUBLESHOOTING
MAINTENANCE

. .

-

vi -

CHAPTER 1 Product Description

Table of Contents

1.1 FEATURES

1.2 SPECIFICATIONS

1.2.1 Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2.1.1

1.2.1.2

1.2.1.3

1.2.1.4

1.2.1.5

1.2.1.6

1.2.1.7

1.2.1.8

1.2.1.9

Paper Handling Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .

Paper Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printable Area... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ribbon Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Approvals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2.2 FirmwareS pacifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 INTERFACE SPECIFICATIONS

1.3.1 Paraliellnterface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.1.I Compatible Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.1.2 Reverse Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.2 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.3 Interface Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.4 Preventing the Host from Data TransferTimeout . . . . . . . . . . . . . . . . .

1-1

1-2

1-2
1-3

1-4

1-5

.

1-7
1-7
1-7

.

1-11

1-11
1-11
I-13

1-14
1-15
1-15

1-7
1-8
1-8
1-8

1.4 OPERATING INSTRUCTIONS

1.4.1 Control Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.2 Self-test Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.3 Hexadecimal Dump Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.4 Micro Adjustment Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.5 PrinterStatus Indication.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.6 Selected Font . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.7 Printer Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.7.1 Power-on Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.7.2 Hardware Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.7.3 Software Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.8

PrinterSettings

. . . . . . . . . . . . . . . . . . . . . . .

1.4.8.1 Selectable

PrinterSettings

.......:.

. : . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4.8.2 Changing the Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 MAIN COMPONENTS

1.5.1

C143 MAIN Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5.2 C130PSB/PSE Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5.3 Printer Mechanism (M-5M1O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5.4 Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

.

.
.

1-16

1-16
1-17
1-17
1-18
1-18

1-19
1-19
1-19
1-19
1-19
1-20
1-20
1-20

1-24

1-24
1-24
1-25

1-25

List of Figures

Figure 1-1. Exterior View of the LQ-300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure l-2. Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure l-3. PrintableAreafor Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure l-4. PrintableAreafor Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure l-5.

Figure l-6. Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure

Figure l-8. C143 MAIN Board Component Layout . . . . . . . . . . . . . . . . . . . . . .

Figure l-9.

Figure 1-10. Printer Mechanism (M-5 M1O). . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 1-11. Housing Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PrintableAreafor

1-7.

Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C130

PSB/PSE Board Component Layout . . . . . . . . . . . . . . . . . . 1-24

Continuous Paper . . . . . . . . . . . . . . . . . . . . . . . .

1-1
1-2
1-5
1-6

1-6
1-11
1-16
I-24

1-25
1-25

List of Tables

Table l-1. Optional Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table l-2.

Table l-3. Feeding Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-4. Specifications for Cut Sheet Paper (CSF). . . . . . . . . . . . . . . . . . . . .

Table 1-5. Specifications for Cut Sheet Paper (Manual Insertion) . . . . . . . . . . . 1-4

Table
Table
Table
Table
Table
Table
Table
Table
Table
Table
Table
Table

Table
Table
Table
Table
Table

Table l-23. Graphic

Table l-24. Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tablel-25.interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table l-26. Bit Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-27. Parity Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-28. Data Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PaperThickness

-6. Specifications forEnvelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-7. Specifications for Continuous Paper (Single Sheet and Multi-Part) . 1-4

-8. Specifications for Continuous Paper with a Label. . . . . . . . . . . . . . . 1-5

-9. Electrical Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-lO.

CharacterTables.

-11. Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-12. Printing Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-13. Signal and Connector Pin Assignments forthe Parallel Interface. 1-12

-14. Signal and

-15. Signal and Connector Pin Assignments

-16. Paper Feeding Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-17. Font Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-18. Font Lightsand Language Selection . . . . . . . . . . . . . . . . . . . . . . .

-19. Default Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-20.

CharacterTables.

-21. Page Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-22.

SkiDOver

EX~/ACK/

Perforation/Auto TearOff/AGM/Auto Line Feed

State Reply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ptint

LeverSettings . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ConnectorPin

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assignments

forthe

forthe Serial Interface . . 1-14

Parallel Interface. 1-13

1-1

1-4

1-4

1-4

1-7
1-8
1-9

1-10

1-17

1-19

1-20

1-21

1-21
1-22

1-22
1-22
1-22
1-22
1-22
1-23
1-23

!!

1-3 -

,’:~\

.,

(:;

f“~.

. .

LWOO

Service

Manual

Product Description

1.1 FEATURES

The LQ300 is a small, light-weight, 24pin serial impact dot-matrix color printer suitable for
personal use. The major features of this printer are:

●

Fast printing of

●

Compact design saves precious work space

●

Easy-to-operate panel

● Quiet printing

●

Two built-in 8-bit parallel interfaces and an

●

Printing of up to 66

●

Optional color printing using a color ribbon (black, magenta, cyan, yellow)

●

Detachable tractor (push, pull, and push-pull tractor feed)

lo-cpi

draft characters at 200 cps

kes

on

A4-size

or 62 lines on letter-size paper

EIA-232D

serial interface

Figure 1-1 shows an exterior view of the
the

LQ-300.

Power

s

LQ-300,

and Table 1-1 lists the optional units available for

~’”pe’”Q@’

lease
r

Knob

Sprocket

Center

support

Tractor unit

Figure 1-1. Exterior View of the LQ-300

Table 1-1. Optional Units

Model

#77!53

#7755

#7768
S015077
C80637*
C83211•

C80030*

*

The number represented by an asterisk varies depending on the country.

Rev. A

Ribbon
Ribbon

oartridge

oartridge

Ribbon cartridge (film)
Ribbon

oartridge

Single-bin cut sheet feeder
Color upgrade kit

Pull tractor unit

Description

(monochrome)

(monochrome, sub-cartridge)

(color)

lever

“l-1

Product Description

1.2 SPECIFICATIONS

This

section

1.2.1

provides detailed information about the

Hardware

Specifications

LQ-300.

LQ-300

Service Manual

r

.T,

,$

,’

Printing

Pin arrangement:
Pin diameter:

method:

E

E

In

4

m
m

a

x

‘o

a

.

\

7

5erial

impact dot matrix

12 x 2, staggered

0.20 mm (0.0079 inches)

.

o

m

.

11( )

II

13 ()
15 ()

17<

19()

21 ()

22 ()

L“?”’”

3f

,

5() !
7()
9

( )

)

?

{

!

I

i

-!

I

ij

i(

I

\

(

)

( )

()

10

(

)

16

()

;;:
)22

f

5

L’24

6

8

‘o

{:

.., .-

HEAD CENTER

Printing direction:

Figure 1-2. Pin Configuration

Bidirectional with logic seeking for text and unidirectional for
graphics. (Bidirectional printing of graphics can be selected with a
printer

setdng or software command.)

p

. . . . .

1-2

Rev.

A

LWOO

Service

Manual

1.2.1.1 Paper Handling Specifications

Paper paths

Cut sheet path:

Rear entry (manual insertion or optional
Cannot handle multi-part paper using friction feed

Continuous paper paths:

Rear entry ( push tractor feed using the push tractor unit
or pull tractor feed using the pull tractor unit or push-pull

tractor feed using both tractor units)
Continuous paper parking:

CSF:

Feeding pitch:

Feeding system:

❑

Friction feed

● Set the release lever to the friction position.

Possible, using push tractor unit
Cannot handle envelopes or multi-part paper

% ~~, 1A
$%o

~ch, or Programmable feeding in increments of

inch, minimum

Friction feed or

. Insert the left edge of the sheet at the marked position.

●

Do

not.perform

reverse feed in the area within 0.63 inch (16 mm) from the bottom edge of

the sheet.

Push tractorfeed

● Set the release lever to the tractor position.

●

Install the tractor unit in the rear in the push

●

On the first page (that is, the page immediately after sheet loading) the accuracy of paper
feeding is not guaranteed within the area 0.87 inch (22 mm) from the top edge of the sheet.

●

On the last page, the accuracy of paper feeding is not guaranteed after the paper comes off
the tractor pins.

●

During printing

●

Do

not eject the labels from the rear.

oflabels,

never perform reverse feeding.

&actor

&actor

Product Description

CSF)

(push, pull, and push-pull) feed

position.

❑

Pull tractor feed

● Set the release lever to the tractor position.

. Install the tractor unit in the top in the pull tractor position.

● Do not perform reverse feeding.

● Do not eject them from the rear.

Push pull tractor feed

●

Set the release lever to the tractor position.

●

Install one tractor unit in the rear in the push tractor position and install the other tractor unit

in the top in the pull tractor position.

. Do not perform reverse feeding.

●

Do

not eject the paper from the rear.

Paper thickness

leve~

The adjust lever must be set to proper position for the
paper thickness, as shown below.

Table 1-2. Paper Thickness Lever Settings

Lever Position

o

1
2

3

4
5

Paper-feeding speed:

Paper Thickness

0.065 mm -0.12 mm (0.0026 in. -0.0047 in.)

0.12 mm -0.19 mm (0.0047 in. -0.0075 in.)

0.19 mm -0.26 mm (0.0075 h. -0.01 in.)

0.26 mm -0.32 mm (0.01 in. -0.013 in.)

0.32 mm -0.44 mm (0.013 in. -0.017 in.)

0.44 mm -0.52 mm (0.017 in. -0.02 in.)

See Table 1-3.

Corresponding Paper

Ordinary paper
Multi-part forms (2 sheets)

Multi-part forms (3 sheets)

Multi-part forms (4 sheets)
Envelopes (20 lb.)
Envelopes (24

lb.)

Rev. A

1-3

Product Description

LQ-300 Service Manual

Table 1-3. Feeding Speed

Lever Position Feeding

I

Friction
Tractor
Friction

o, 1

2-5

Tractor

*

Feed speed is varies depending on the motor driving voltage.

1/6

inch Line Feed Continuous Feed

Max. 94 ins/line

Typ.

80 ins/line (*)

Min. 75 ins/line Min. 2.8

I I

Max. 106

Typ.

Min 94

redline

104 ins/line (*)

m.s/line

1.2.1.2 Paper Specifications

Table 1-4. Specifications for Cut Sheet Paper

Width
Length

Thickness
Weight

Qualitv

182 mm -216 mm (7.2 in. -8.5 in.)
210 mm -364 mm (8.3 in. -14.3 in.)

10.07

64-90
Plain

mm -0.12 mm (0.0028 in. -0.0047 in.)

g/m2

(18 -24 lb.)

oaDer. recvcled DaDer

Table 1-5. Specifications for Cut Sheet Paper (Manual Insertion)

Max 3.6

Typ.

Max. 2.8

Typ.

Min. 2.2 incheskec.

incheslsec.

3.3 incheshec (*)

inchhec.

incheslsec.

2.5 inche.shec.’

(CSF)

I

Width

Length
Thickness
Weight

Quality

148 mm -257 mm (5.8 in. -10.1 in.)
182 mm -364 mm (7.2 in. -14.3 in.)

0.065 mm -0.14 mm (0.0025 in. -0.0055 in.)

g/m2

52.3-90

I

Plain paper, recycled paper

(14 -24 lb.)

Table 1-6. Specifications for Envelopes

Size

Thickness

Weight
Quality Bond paper (not curled, folded, or crumpled), plain paper, airmail paper

Notes: .

Printing of envelopes is guaranteed only at room temperature and normal humidity (15

No.

No. 10

0.16 mm - 0.52 mm (0.0063 in. - 0.0197 in.)

45- 91

- 25° C (59 - 77° F) ,20- 60%

● Variations in envelope thickness must be less than 0.25 mm (0.0098 in.).

. When inserting envelopes, keep the longer side horizontal.

Width x Length: 166 mm x 92 mm (6.5 in. x 3.6 in.)

6

Width x Length: 240 mm x 104 mm (9.5 in. x 4.1 in.)

g/m2

(12 -24 lb.)

RI-I).

Table 1-7. Specifications for Continuous Paper (Single Sheet and Multi-Part)

Width
Total thickness
Weights

Copies
Quality

101.6 mm - 254 mm (4.0 in. - 10.0 in.)

0.065 mm - 0.32 mm

52.3- 82

40- 58.2
4 sheets (1 original + 3 copies)
Plain paper, recycled paper, carbonless multi-part paper

g/m2

(14 - 22 lb.) — not multi-part

g/m2

(12 - 15 lb.) — multi-part

(0.0025 in. - 0.012 in.)

1-4

Rev.

A

LQ-300 Service Manual

Table 1-8. Specifications for Continuous Paper with a Label

Product Description

Label size (W x L)

Width of base paper
Thickness of base

paper
Total thickness
Weight
Quality

Notes:

1.2.1.3 Printable Area

Cut sheets

●

Use only continuous-type labels and use them only with the tractor.

. Examples of labels

●

Printing of envelopes is guaranteed only at room temperature and normal humidity (15

- 25° C (59 - ’77° F) ,20-

3mm[0.12”]

minimum

63.5 mm (min.) x 23.8 mm (min.) [ 2.5 in. (min.) x 15/16 in. (min.)]

101.6

0.07 mm - 0.09 mm (0.0028 in. - 0.0031 in.)

0.16 mm -0.19 mm (0.0063 in. - 0.0075 in.)
68 g/m2 (17 lb.)
Plain paper

D

mm -254 mm (4.0 in. x

—Avery Continuous Form Labels

—Avery Mini-Line Labels

6(Mo

RI+).

3mm[0.12”]

G-

—

minimum

10,0

in.)

b

—
—

—

4

Printable area

—

4

—

Figure 1-3. Printable Area for Cut Sheets

5,3mm[0.2”]

minimum

9mm[0.35”]

minimum

.. :.,

Rev. A

1-5

Product Description

Envelopes

LQ-300 Service Manual

3mm[0.12”]

minimum

Continuous paper

3mm[0.12”]

k,

Printable area

minimum

Figure 1-4. Printable Area for

13 mm 10.51 m], ~
minimum

4----++

:

203.2 mm [8”], maximum

0,

0,
06

0,

0,

0,

0,

0,
0,

0,
0,

0,
0,

0,

0,

.o---­0,
0,

0,
0,

0

.,

. - . . . . . . . - . . . . - .

.

0,

0,

0,
0,

Q-r--

0,

0,

0,

0,
0,

0,
0,
0,
0,
0,
0

4

0,
0,

0,

=,

A

T

Envelopes

:0

,0
,0
,0
,0
,0
,0
,0
,0
,0
,0
,0
,0
,0
,0

,0

,0
,0

,0

,0

,0

:6

,0
,0
,0

,0
,0
,0
,0
,0

,0
,0
,0
,0

,0

,0

,0

,0
,0
,0

L

5.3mm[0.21”]

minimum

13.5mm[0.53*]

minimum

1-6

Figure 1-5. Printable Area for Continuous Paper

Rev.

A

LQ-300 Service Manual

1.2.1.4 Ribbon Specifications

Product Description

Ribbon cartridge (mono):

#7753

#7755 (sub-cartridge)
Ribbon cartridge (film):
Ribbon cartridge (color):

Ribbon color:
Black ribbon life:

Film ribbon life:

#7768

S015077

Black, magenta, cyan, yellow

2 million characters (48 dots/character)

0.2 million characters

(48

dots/character)

Color ribbon life

Black: 1 million characters (48 dots/character)
Magenta:
cyan:
Yellow:

0.7 million characters (48 dots/character)

0.7 million characters (48 dots/character)

0.5 million characters (48 dots/character)

1.2.1.5 Electrical Specifications
Table 1-9. Electrical Ranges

Description 120 V Version 230 V Version

Rated voltage

Input voltage range

Rated frequency range
Input frequency range
Rated current

I

I
I

120

VAC

103.5-132 VAC 198-264

50- 60

49.5- 60.5

1.1 A

t-fz

1

I

220-240

Hz

VAC
VAC

0.6 A

Dielectric strength

1.2.1.6 Environmental Conditions

1000

VAC

ms for 1 minute or

1200 VAC

(between AC line and chassis)

Temperature range:

Operation:

5to35“C (41 to 95 “F)

Operation (film ribbon): 15to35‘C (59 to 95 ‘F)
Operation (envelopes,

labels, or recycled paper): 15to25‘C (59 to
Storage:

–20 to55‘C (-4 to

Humidity (without condensation):

Operation:
Operation (film ribbon):

5 to

10 to

80?40 RH

80Y0 RH

Operation (envelopes,
labels, or recycled paper):

Storage:

20 to

to

5

60Y0 RH

W’/. RH

1.2.1.7 Reliability

rms

for 1 second

77°F)

131

‘F)

1500 VAC

(between AC line and chassis)

rms

for 1 minute

MTBF:

Printhead life:

Rev. A

4000

power on hours

(POH)

200 million strokes/wire (with monochrome ribbon)

100 million strokes/wire (with color and film ribbon)

1-7

Product Description

1.2.1.8 Safety Approvals

LQ-300

Service Manual

Safety standards:

U.S. version:
European version: EN 60950

Radio frequency interference:

(RFI)

U.S. version:
European version:

1.2.1.9 Physical Specifications

Dimensions (W x D x H):
Weight without

1.2.2 Firmware

tractoc

Specifications

Control codes:

Input data buffer
Download memory:
Character sets:

Character

tables:

366 x 275x 141 mm (14.4 x 10.8x 5.6 inches) without tractor

4.3 kg (9.5 lb.)

ESC/P2

IBM X24E emulation
EPSON remote

8KB

10KB

14 international character sets and one legal character set

Table 1-10. Character Tables

UL1950

with D3,

CSA22.2

#950 with D3

~)

IEC950 (SEMKO, DEMKO,

NEMKO, SETI)

FCC part 15 subpart B class B
Vfg.243
EN55022

(VDE0878

(CISPR

PUB. 22) class B

part 3,

pati

30)

,ffq

L-.

.,

Character Table Standard Model NLSP* Model

ITALIC

PC437 (US, Standard Europe)
PC850 (Multilingual)
PC860 (Portuguese)
PC861

(Icelandic)
PC863 (Canadian-French)

PC865 (Norwegian)
BRASCII
Abicomp

PC852 (East Europe)
PC853 (Turkish)
PC855

PC857

PC864 (Arabic)

PC866 (Russian)
PC869 (Greek)
PC437 Greek

ISO Latin IT
ISO

Code MJK

MAZOWIA

Bulgaria (Bulgaria)

(Cvrillic)

(Turkish)

8859-7

(TuAish)

(Greek)

(Czecho,

(Polland)

Slovakia)

Iolxl

Ixlol

Ixlol

o 0
o 0
o

o

o

o x

o

o

x o
x
x

x
x
x
x o

x o
x
x o
x

0

x

x

x

x

o
o

o
o
o

o

o

Suppotied

0

‘ NSLP = National Language

1-8 Rev.

x Not

suppofled

Suppori

A

LC?-300

Service Manual

Bitmap fonts:

Scalable fonts:

Character matrix:

Print mode:

Resolution:
Printing speed and

printable columns:

Product Description

(10

cpi/

12

cpi/

15

EPSON Draft

(10

cpi/

12

12
12
12

cpi/

cpi/
cpi)
cpi)

EPSON Roman
EPSON Saris Serif
EPSON Courier
EPSON Prestige
EPSON Script

EPSON Roman
EPSON

!%ns serif

EPSON Roman T

(lOcpi/ 12cpi/ 15cpi/

(10

cpi/

(10

cpi/

(10

cpi/

8-32 points (units= 2 points)

8-32 points (units= 2 points)

8-32 points (units= 2 points)

EPSON Saris Serif H 8- 32points (units

Drailt

10

cpi;

12 horizontal dots, 24 vertical dots

NLQ 10

cpi;

36 horizontal dots, 24 vertical dots

cpi)

15

cpi/

Proportional)

Proportional)

15

cpi)

=2points)

Double-width
Double-height
Condensed
Bold
Double-strike
Italics
Super/subscript
Outline
Shadow
Underline (single, double, single-broken, double-broken)
Strike-through (single, double, single-broken, double-broken)
OverScore (single, double, single-broken, double-broken)

See Table 1-11.
See Table 1-12.

Printing Mode

Draft
Draft condensed
LQ
8-pin bit image

24-pin bit image

Table 1-11. Resolution

Horizontal

Density

dpi

120
240

dpi

360

dpi

60

dpi

dpi

120

dpi

120
240

dpi

80

dpi
dpi

90

dpi

60

dpi

120

dpi

90

dpi

180

dpi

360

Vertical Density

180

dpi
dpi

180
180

dpi

60

dpi

60

dpi

60

dpi

60

dpi

60

dpi

60

dpi

180

dpi

180

dpi

180

dpi

180

dpi

180

dpi

Adjacent Dot

Printed?

No
No

No
Yes
Yes

No

No
Yes
Yes
Yes
Yes
Yes
Yes

No

Rev. A

1-9

Product Description

LWOO Service Manual

Table 1-12. Printing Speed

Printing Mode

Draft

Draft condensed 17

LQ condensed

Vote:

Each maximum print speed is changeable depending on attributes of characters within

Printing Mode

Chg\;gter Printable

10
12
15

20
10
12
15

17

J

Maximum Print Speed

Columns

cpi
cpi
cpi
cpi
cpi
cpi
cpi
cpi
cpi

20 160

Th

c 0.19 mm

80

96
120
137
160

80

96
120
137

{

~Th>01,mm{T212

Mode 1

200
240
300

171

200

67 50

80
100

114 86

133 100

T

>12

“C

--c

T

<12

“C

+_

.+;:;:;:

V: Normal —

V: Down

V: Normal

V:

Mode 2

133
160

200

114
133

60
75

Down—

Mode 1

—

Mode 3

—

Mode 2

Mode 3

[cps]

Mode 3

.}

F“

100
120
150

86

100

33
40
50
57
67

-.

T

<12

“C

{“

V:

Down—

Th: Paper thickness
T :

Printhead

V :

Printhead

Mode 3

temperature
driving voltage

1-1o

Rev.

,,,

A

LQ-300 Service Manual

1.3 INTERFACE SPECIFICATIONS

Product Description

LQ-300

has a

Centronics<ompatible

parallel interface and an

EIA-232D

serial interface, one of

which can be selected in default setting mode. Auto selection is also available.

1.3.1 Parallel Interface

The parallel interface has two modes:

. Compatible mode

● Reverse mode

1.3.1.1 Compatible Mode

Data format:
Synchronization:
Handshaking:
Signal level:
Adaptable comector:
Data transmission timing:

Note:

Transition time (rise time and fall time) of every input signal must be less than 0.2

BUSY

ACKNLG

8-bit parallel
By STROBE pulse synchronization
By BUSY and

Tl_’L-compatible

36-pin 57-30360

ACKNLG

level

(IEEE-P1284

(Amphenol)

signals

level 1 device)

or equivalent

See Figure 1-6.

.

ps.

DATA

STROBE

—

~

.

Figure 1-6. Data Transmission Timing

The BUSY signal is active (HIGH) under the following conditions:

. During data reception (See Figure 1-6.)

●

When the
. When the INIT input signal is active
. During a printer error
. During the self-test mode
. During the default setting mode
. When the parallel interface is not selected

The ERROR signal is active (LOW) under the following conditions:

. When a paper-out error occurs
. When a release lever operation error occurs

●

When a fatal error occurs

innt

buffer is

full

The PE signal is active (HIGH) under the following conditions:

●

Rev.

When a

A

paper-out error occurs

1-11

Product Description

LQ-300

Service Manual

Table 1-13 shows the connector pin assignments and signal functions for the 8-bit parallel interface.

Table 1-13. Signal and Connector Pin Assignments for Parallel Interface

Pin No.

2-9

10

11

12

13
14

15,34

16
17
18

19-30

31

32
33

35
36

*

7%e

1

Signal Name

STROBE

DATAO-DATA7

ACKNLG

BUSY

E

‘
SLCT

AFXT
NC

GND

Chassis
LOGIC-H

GND

INIT

ERROR

GND
+5V

SLIN 30

//0 column indicates the direction of the signal as viewed from the printer.

GND

(!!%”%

19

20-27

28

29

28

28
30

.
—

—
—

. —

30

29
—

—

‘0’

The STROBE pulse is used to read the input

data. The pulse width must be more than 0.5

In

Input data is latched after the falling edge of this
signal.
Parallel input data to the printer.

In

out the printer is ready to accept more data. The

out

out

out

In

—
—

—

out Pulled up to +5

In

out

—

out Pulled up to +5 V through

In

A HIGH level means data 1.
A LOW level means data O.

This pulse indicates data has been received and

pulse width is approximately 12

HIGH indicates the printer cannot acoept more

data.
HIGH indicates paper-out. This signal is effective

only when the ERROR
Always HIGH output. (Pulled up to +5 V through

3.3K Q resistor.)

Not used.
Not connected.
Signal ground.
Chassis ground.

Signal ground.

Input for printer initialization. Pulse width 50

minimum, active LOW.
LOW indicates that some error has

the printer.
Signal ground.

Not used.

Description

U.S.

signal

is LOW.

V

through 3.9K Q resistor.

o=urred

3.3K Q

resistor.

.%

c

ps.

{,,’”.

w

in

-c.-

‘{‘

1-12

. . .

Rev. A

LQ-300 Service Manual

1.3.1.2 Reverse Mode

LQ-300

reverse mode supports

IEEE-P1284

nibble mode, described in this section.

Product Description

Transmission mode: IEEE-P1284
Signal level:
Adaptable connector:

IEEE-P1284

36-pin 57-30360

nibble mode
level 1 device

(Arnphenol)

or equivalent

Table 1-14. Signal and Connector Pin Assignments for Parallel Interface

Pin No. Signal Name

1

2-9

10

11

12

13

14

15 NC
16

17 Chassis

18

19-30

31
32

33
34
35
36

*

The l/O column indicates the direction of the signal as viewed from the printer.

HostClk 19
DATAO-7

Ptrclk

PtrBusy /

DataBit-3,7

AckDataReq
DataBit-2,6

Xflag

I

DataBit-l,5
HostBusy

GND

GND

Logic-H

GND

m

DataAvail
DataBit-0,4

GND

NC

v

+5
1284-Active

/

/

C%%”%

20-27

28
29

28

28

30
—

.

— —
—

—

30

29

— —
—
—

30

‘0’

In

In

out

out

out

out

In

—

—

out

—

In

out

—

out

In

Host clock signal.

Signals

bits O to 7.
Printer
Printer busy signal and reverse channel transfer

data bit 3 or 7.
Acknowledge data request signal and reverse

channel transfer data bit 2 or 6.
X-flag signal and

bit 1 or5.

Host busy signal.
Not oonnected.

Signal ground.

Chassis ground.
Pulled up to +5

Signal ground.
Not used.
Data available signal and reverse channel

transfer bit O or 4.

Signal ground.
Not oonnected.
Pulled up to +5 V via 3.3K S2 resistor.
1284 active signal.

DATAO

clook

Description

through DATA7 represent data

signaL

reverse channel transfer data

V via 3.9K Q resistor.

Rev. A

1-13

Product Description

1.3.2 Serial Interface

The

LQ-300

is equipped with an 8-bit serial interface, standard.

LQ-300 Service Manual

Data format:

EIA-232D

serial
Synchronization: Asynchronous
Handshaking:

protocol, X-ON/X-OFF protocol,

ETX/ACK

protocol

By

DTR

Word length

Start bits: 1 bit
Data bits: 7 or 8 bits (selectable)
Parity bit:
Stop bits:

Bit rate:

Odd, even, or none (selectable)
1 bit

300,600,1200,2400,4800, 9600,19200 bps (selectable)

Logic level

MARK
SPACE (logical O):

~OgiCid

1):
–3 V to –25 V

+3 v to +25 v

Parity check:

Connectoc

Odd, even, or no parity bit (selectable)

EIA

standard 25-pin D-SUB female comector

Table 1-15. Signal and Connector Pin Assignments for Serial Interface

Pin No. Signal Name

1

2
3 RXD

4
7

11

20

5,6,8-10,

12-19, NC

21-25

*

l%e

Chassis

Signal

//0

column indicates the direction of the signal as viewed from the printer.

GND

TXD

RTS

GND

REV

DTR

I/o’

—

out

In

out

—

out

out

—

Chassis ground.
Transmit serial data.
Receive serial data.

Request to send. Always SPACE level when the printer
is powered on. Pulled up to

Return path for data and control signals.

Conneoted

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

No connection (not used).

directly to the

Description

+12V

DTR

signal.

via 4.7K Q wsistor.

* .

.

.

\ ~

>,

.

1-14

Rev.

,-,...

A

LQ-300 Service Manual

1.3.3 Interface Selection

Product Description

The printer has 2 interfaces: parallel and serial.

These interfaces can be selected manually in

default-setting mode or selected automatically.

●

Manual selection

One of the two interfaces can be selected in default-setting mode.

. Automatic selection

When automatic interface selection is enabled in default-setting mode, the printer is
initialized to idle state scanning, in which an interface receives data when it is powered
on, and the interface that receives data first is selected. When the host stops data transfer,
and the printer is in the standby state for 10 or 30 seconds (time selectable in the
default-setting mode), the printer returns to the idle state. As long as the host sends data
to the printer interface in the BUSY state, the currently selected interface remains the
same.

. Interface state and interface selection

When the parallel interface is not selected, the interface is in the BUSY state. When the

serial interface is not selected, the interface sends X-OFF and sets the

When the printer is initialized or returned to the idle state, the parallel interface is in a

READY state, the serial interface sends X-ON and sets the
that the interrupt signal such as a INIT signal on the parallel interface is not effective
while that interface is not selected.

1.3.4 Preventing the Host from Data Transfer Timeout

DTR

signal MARK.

DTR

signal SPACE. Notice

Hosts abandon attempts at data transfers to peripherals when a peripheral is in BUSY state for
dozens of seconds continuously. To prevent hosts from this

ldnd

of timeout, 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. Finally, when the

input buffer is full, the printer goes into the BUSY state continuously.

Rev. A

1-15

Product Description

LQ-300

Service Manual

1.4 OPERATING INSTRUCTIONS

This section describes control panel operation functions, self-test, hexadecimal dump, paper feed,
micro adjustment, and printer initialization methods.

1.4.1 Control Panel Operation

The printer control panel contains three non-lock-type push buttons and three LED indicators for
easy operation of the various printer functions.

Buttons

Pause:

Font:

LFIFF:

Indicators

Roman

Saris

Courier*

Seriio

O 0

●

O

I.ight

Draft

Py:li!: :

Draft O

Condensad

I W ~

W

//

● ● I 2

Micro Adjust

Lights

A

Font

~1’[1

Paper

Buttons

&

Parkd

/FF

1’

Pause

$!!d

h

3sec

Figure 1-7. Control Panel

Switches printer status between printing and no printing, if there is
print data in the input buffer. When the printer is out of paper, the
light flashes and the beeper sounds three times.

S&c&

one of the available fonts. When you hold down this button

while you turn on the printer, you enter
When you press this button, the printer feeds paper line by line.

Hold it down to load a single sheet, or to advance continuous paper
to next top-of-form position.

the

printer setting mode.

Pause (Orange):

Font 1 and 2 (Green):

Special Mode

Self-test mode:
Hex dump mode:

Default-setting mode:
Micro adjustment mode:
Paper park mode:

Lights when the printer in pause mode.
Indicates the currently selected font.

Hold down the
Hold down the
Hold down the
Hold down the
Hold down the

LF/FF button

LF/FF

and Font

Font

buttons and turn on

Pause

Font and

and turn on the printer.

buttons and turn on the printer.

button or

LF/FF

buttons together.

Font

the

button.

printer.

1-16

Rev. A

LC?-300

Service Manual

Product Description

Table 1-16. Paper Feeding Functions

Tractor Feed

Operations

Not Paper Out Paper Out State

Press

LF/FF

and
Font buttons at the
same time

Insert a sheet to the
manual insetiion slot

(*l):~@n

the printer is in tear-off state,

Paper park (*1)

— —

—

the.w

functions a~ performed after returning from

tear-off position.

(*2)

Gce

a manually inserted sheet is loaded, the printer enters manual insertion mode. After

that, even if data remains

in the buffer, the printer goes into a paper out error state at the end
of every a sheet and waits for insertion of the next sheet. The
loading operation from the

CSF

or by

initialization.

1.4.2 Self-test Function

W

section explains how to run the self-test.

Friction Feed

Not Paper Out

Line feed

Eject

—

—

CSF

is enabled again by sheet

Paper Out State

Load a sheet (*2)

Load a sheet (*2)

—

After 2 seconds

load the sheet

manuallv

(*2)

the

I

1. Hold down the

LF/FFbutton

and turn on the printer to start the self-test.

2. If paper is not loaded, the printer attempts to load it.

3. The printer prints alphanumeric characters continuously.

5. Quit self-test mode printing bypressingthe

Pause

button and turning the printer off.

1.4.3 Hexadecimal Dump Function

The hexadecimal dump is a useful tool for troubleshooting data control problems.
describes how to run a hex dump.

1.

Turn on the printer while holding down the

2.

If paper is not loaded, the printer attempts to load it (either single sheet or continuous paper).

3.

If the printer cannot Ioad the paper, it indicates a paper-out error. In this case, insert paper
again, and press the

4.

The printer waits for data after printing the message “Hex dump(*).”

“Hex Dump”:

“Codes Hexadecirnaux”:
“Dump

“Volcado

5.

Received data is printed as both hexadecimal codes and ASCII characters. If a corresponding

esadecimale”:

hex”:

Pause

button.

English or German is selected
French is selected
Italian is selected
Spanish is selected

LF/FF and Font

buttons.

printable character does not exist, the printer outputs a period (.).

6.

Quit hexadecimal dump printing by pressing the PAUSE button and turning the printer off.

Note:

In

hex dump mode, the character table depends on the default setting, and 10 cpi draft is

selected automatically.

This

section

Rev.

A

1-17

Product Description

LQ-300

Service Manual

1.4.4 Micro Adjustment Function

To enter adjustment mode, press the Pause button for three seconds, until the printer beeps once
and the

Pause

lights

bhnk

to indicate that the adjustment

operation is available. If the printer state

is not one of the conditions shown below, this operation is ignored.

● TOF position adjustment:

The position can be adjusted just after the paper is loaded.

● Tear-off position adjustment:

The position can be adjusted when paper is actually located at the tear-off position.

. . .

‘~

f

.,

.

.

In the adjustment mode, press the
paper backward. You can cancel adjustment mode by pressing the

LF/FF button

to feed paper forward and the

Pause

Font

button or inputting a

button to feed

print coremand. The adjusted position is stored in non-volatile memory.

1.4.5 Printer Status Indication

This section describes how the printer indicates status and error conditions using LEDs and the
beeper.

The symbols below describe the frequency of beeper sounds.

(.):

The beeper sounds for 100 rns with an interval of 100 ma between beeps.

(—): The beeper sounds for500rns.

While initialize

signal is active:
During initialization:
Standby or printing state:
Pause state:
Micro adjustment mode:

Tear-off:
Paper-out error

state(”l)

Operating error (~), fatal error (*3):

Notes:

Pause light is on.
Pause light blinks
Pause

light is off

Pause light is on

Beeper sounds (

(light

on:off

Pause light blinks (light

ratio=

●

)

and

Pause light blinks.

1:1)

on:off

ratio=

1:6)

Beeper sounds (.. . ) and Pause light blinks
(light

on:off

ratio=

Beeper sounds (—

6:1)

) and Pause light is on.

(*1):

(*2):

(*3):

A paper-out error occurs with any of the following conditions:

●

Paper is not loaded after loading is attempted.

●

A full sheet finishes printing after single sheet loading by manual insertion.

●

The end of

condrmous

paper is reached.

When a paper-out error occurs, the printer stops printing and enters the pause state. After
that, when a sheet is loaded, the PAUSE light stops blinking and the light stays on, but

the printer remains in the pause state. Press the PAUSE button to start printing.

An operating error occurs for any of the following conditions:

●

The release lever is set to the TRACTOR position without ejecting cut sheets.

●

The release lever is set the FRICTION position without ejecting continuous paper.

A fatal error occurs with any of the following conditions:

●

Power supply voltage is abnormal.

●

Printhead temperature is abnormal.

1-18

.,

Rev. A

LQ-300 Service Manual

1.4.6 Selected Font

Product Description

The combination of two
To choose one of the seven internal fonts listed on the control panel, press the

Font

LEDs (1 and2) is used to indicate the selected font.

Font

button.

Table 1-17. Font Selection

Selected Font\ Font 1

Roman
Saris Serif

Courier

Prestiae
script

Draft
Draft condensed

Light I

On
On

off

Blinkina

Blinking

On
off

Font2 Light

On
off

On

On

off

Blinking

off

1.4.7 Printer Initialization

There are three types of initialization:
software initialization.

power-on initialization, hardware initialization, and

1.4.7.1 Power-on Initialization

The power-on initialization is performed by turning the printer powered on. When the power-on
initialization is performed:
. The printer mechanism is initialized.

●

The

hardware initialization is performed.

1.4.7.2 Hardware Initialization

Hardware initialization is performed by:
. Turning on the printer.
. The falling edge of a negative pulse ora low signal on theparallel interface

/INITline.

When hardware initialization is performed:

●

Print data in the input buffer is cleared.
. Download character definitions are cleared.
. The printer’s settings areretumed to the defaults.

●

The

printer is set to the standby condition, if no fatal error occurs.

1.4.7.3

Softwme

Software

initialization is performed upon receipt of the control code ESC

Initialization

62.

When software

initialization is performed:

●

Print characters in the buffer are not cleared.
. The printer setting is changed to the default, but download character definition is not cleared.

Rev. A

1-19

Product Description

LQ-300

Service Manual

1.4.8 Printer Settings

1.4.8.1 Selectable Printer Settings

The following printer settings can be changed by users in default-setting mode:
Character table (Standard):

Character table

(NLSP):

Page length:

l-inch skip-over-perforation:
Auto tear off:
Graphic print direction:
Software
AGM:
Auto line feed:

Interface:

Bit rate (serial I/F):

Parity bit (serial I/F):

Data length (serial):

ETX/ACK

(serial):

State reply

Note:

Underlines show factory setting.

PC437/850/860/861

PC437/437 Greek/850 /852/853/855/857/864/866/869
IT

/1S0

8859-7/Code

/863/865

/BRASCII/Abicomp

MJK/Ma.zowia/Bulgaria

/1S0

Latin

11 /12/ 8.5/ 70/6 inches (A4)

on/Qff
on/mf

Unidirectional / Bidirectional

ESC/P2

on/

/ IBM

Q.tl

X24E

on/Qf

Auto selection (10 second wait) / Auto selection (30 second wait)/
Parallel / Serial

300 / 600/ 1200/ 2400/ 4800/

!26Q!2

/

19200

bps
None / Odd/ Even

7bits / 8 bits
on/Qll

on/Qff

1.4.8.2 Changing the Default

Settings

You can change some parameters that the printer refers to at printer initialization.

1. To enter the default setting mode, turn on the printer while holding down the

Font

button,

The printer prints out the firmware version. Ifpaperisnot loaded, insert a sheet of paper.

2. The printer automatically loads paper and prints a table of languages to choose from: English,
French, German, Italian, and Spanish. The

Font

lights indicate the currently selected language,

as shown in the table below.

Table 1-18. Font Lights and Language Selection

Font 2 Light

ON

Blinks

OFF German

ON

Blinks

3. Press the

Font

4. Press the Font

Font 1 Light

OFF
OFF

ON
ON
ON

button to change the language, and press the

button

again after selecting a language. The printer prints help text to guide
you in setting defaults. The printed instructions include submenu tables listing all the settings
you can change and showing you how the control panel lights appear for each selection.

5. To change the settings, press the Font button to move down and press the
move up in the menu of options shown below. The printer beeps once each time you press the
these buttons while you are in this menu.

Language

English
French

Italian

Spanish

LF/FF

button to select.

\

I

LF/FF

button to

<-’

.,

1-20

., .,

Rev. A

LQ-300 Service Manual

Table 1-19. Default Options

Product

Deacfiption

Font 1 Light Font 2 Light Pause Light

6.

Blinks
Blinks

OFF

ON

Biinks
Biinks

OFF

ON

Biinks
Biinks

OFF

ON

Biinks Biinks Blinks

Blinks

you reach the setting you want to change, press the

When

OFF OFF

ON

Blinks

Biinks

OFF

ON ON

Biinks

Biinks

OFF

ON

Biinks Blinks

Biinks

Biinks OFF

Setting

Character table
Page

OFF

OFF
OFF Auto tear-off

ON

ON

ON
Blinks
Blinks Bit rate

Blinks

I

State reply

iength

Skip over perforation

Graphic print direction
Software

AGM

Auto line feed

interface

Parity bit

Data

iength

ETWACK

Pause

button once. The printer

Go to

Submenu

Tabie

Table 1-21

Tabie 1-22

Tabie
Tabie 1-23
Tabie 1-24

Tabie
Tabie

Table 1-25

Tabie

Table 1-27

Tabie 1-28
Tabie

,

Tabie

1-20

1-22

1-22
1-22

1-26

1-22

1-22

automatically enters the submenu for that setting.

7.

Press the
twice each time you press the

8.

When the lights match your desired setting, press the Pause button to make your selection.

Font

button to move the through the settings in the submenu.

Font

button while in a submenu.

The

printer beeps

The printer saves the new setting and returns to the menu shown above.
Repeat steps 5 through 8 for each additional setting you want to change, or skip to step 10 to

9.

exit the printer’s default setting mode.

10.

When you are finished, turn the printer off. Any settings you have made remain in effect until
you change them

again.

Font 1 Light

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

Blinks

Table 1-20. Character Tables

Font 2 Light Pause Light

OFF
OFF

ON

ON
OFF
OFF

ON ON

ON
OFF Blinks
OFF

ON

ON

Blinks Blinks
Blinks Blinks
Blinks Blinks

OFF
OFF
OFF Pc 860
OFF PC 863

ON
ON

ON

Blinks
Blinks
Blinks

Standard

Pc

437

PC 850

PC 865

Pc 861

BRASCII
AbicomD

—
—
—
—
—
—
—

Modei

NLSP

Modei

Pc

437
Pc 650
PC 864

PC 437 Greek

Pc 652
PC 853
PC 855
PC 857
Pc 866
PC 869

iSO

Latin IT

ISO

8859-7

Code MJK

Mazowia

Bulgaria

Rev. A

1-21

Product Description

LQ-300

Service Manual

Table 1-21. Page Length

Font 1 Light

OFF OFF

ON

OFF

ON

Font 2 Light Pause Light

OFF

OFF

ON
ON

OFF
OFF
OFF

Setting

11

inches

12 inches

8.5 inches

i’0/6

inches

Table 1-22. Skip Over Perforation / Auto Tear Off/ AGM / Auto Line Feed/

ETWACK / State Reply

. . . .

..:.

~

f

. .

Font 1 Light

OFF OFF

ON

Font 2 Light

ON

Table 1-23. Graphic Print Direction

Font 1 Light

OFF

ON ON ON

Font 2 Light

OFF

Table 1-24. Software

Font 1 Light Font 2 Light

OFF

ON ON

OFF

Table 1-25. Interface

Font 1 Light

OFF

ON

OFF

ON

Font 2 Light

OFF

OFF OFF

ON
ON

Table 1-26. Bit Rate

Pause Light

OFF off

ON On

Pause Light

OFF

Pause Light

OFF

ON

Pause Light

OFF

OFF
OFF Serial

Auto selection (10 ms wait)
Auto selection (30 ms wait)

Setting

Setting

Uni-D

Bi-D

Setting

ESC/P2

IBM X24E

Setting

Parallel

gT’-

.,

.,,.

Font 1 Light

OFF

ON

OFF

ON ON

OFF

ON

OFF

1-22 Rev. A

Font 2 Light Pause Light

OFF
OFF

ON

OFF
OFF

ON

OFF 300 bps
OFF 600 bps
OFF
OFF

ON
ON
ON

Setting

1200 bps
2400 bps
4800 bps
9600 bps

19200 bps