Epson LQ-1070, LQ-570 Service Manual

EPSON TERMINAL PRINTER

LG1-570/lo7cJ

L

4000566

REV.-B

.

NOTICE

“ All rights reserved. Reproduction of any part of this manual in any from

whatsoever without

SEIKO EPSON’s

express written permission is forbidden.
“ The contents of this manual are subject to change without notice.
‘ All efforts have been made to ensure the accuracy of the contents of this manual.

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 consequences thereof.

@

Copyright 1991 by

SEIKO EPSON CORPORATION

Nagano, Japan

-i-

REV.-A

PRECAUTIONS

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

to equipment:

DANGER

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.

Signals a precaution which, if ignored, could result in serious or fatal personal
injury. Great caution should be exercised in performing procedures preceded by
a DANGER heading.

DANGER

1.

ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND THE
HOST COMPUTER BEFORE PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURE.

2.

NO WORK SHOULD
BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN

THEIR LINE OF WORK.

3.

WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT
CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN
THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN
WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

B&

PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH

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

2.
VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PROD­UCT HAS A PRIMARY-AC RATING DIFFERENT FROM THE AVAILABLE POWER
SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE

3.
POWER SOURCE BEFORE
AND/OR INDIVIDUAL CHIPS.
IN ORDER TO PROTECT SENSITIVE

4.
DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESS­ING INTERNAL COMPONENTS.
REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS

5.
RECOMMENDED BY THE MANUFACTURER; INTRODUCTION OF SECOND-SOURCE

ICS

OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND

VOID ANY APPLICABLE EPSON WARRANTY.

REMOVI”NG

OR REPLACING PRINTED CIRCUIT BOARDS

/.LP

CHIPS AND CIRCUITRY, USE STATIC

- ii -

PREFACE

This manual describes functions, theory of electrical and mechanical
operations, maintenance, and repair of the
The instructions and procedures included herein are intended for the
experienced repair technician, and attention should be given to the
precautions on the preceding page. The chapters are organized as follows:

LQ-570/l

070.

REV.-B

Chapter 1 -

Chapter 2 -

Chapter 3 -

Chapter 4 -

Chapter 5 -

Chapter 6 -

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

Provides a general product overview, lists specifications,

and illustrates the main components of the

Describes the theory of printer operation.

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

Includes a step-by-step guide for adjustment.

Provides Epson-approved techniques for troubleshooting.

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

printer.

-

iv -

REVISION SHEET

REVISON

A

B

DATE ISSUED

June 20, 1991 1st issue

Sept. 6, 1991

Added information for the LQ-1 070:

l-i, l-ii, 1-1 - 1-8, 1-10, 1-11, 1-24, 1-26 - 1-28
2-i, 2-ii, 2-1 - 2-11, 2-13­3-i, 3-ii, 3-5 - 3-20
4-i, 4-1 - 4-4, 4-6
5-i, 5-1

6-i, 6-1, 6-4

A-1, A-ii, A-1

CHANGE DOCUMENT

2-15, 2-17, 2-18

- 5-5, 5-9, 5-11 - 5-19

-

- A-1 5, A-17

A-1

9, A-22, A-23

–v–

TABLE OF CONTENTS

REV.-A

CHAPTER 1.
CHAPTER 2.
CHAPTER 3.
CHAPTER 4.
CHAPTER 5.
CHAPTER 6.

APPENDIX

GENERAL DESCRIPTION
OPERATION PRINCIPLES
DISASSEMBLY AND ASSEMBLY

ADJUSTMENTS
TROUBLESHOOTING
MAINTENANCE

-

vi -

CHAPTER 1

GENERAL DESCRIPTION

REV.-B

FEATURES

1.1

SPECIFICATIONS

1.2

1.2.1 Hardware Specifications

1.2.2 Firmware Specifications
INTERFACE OVERVIEW

1.3

1.3.1 Parallel Interface
CONTROL PANEL

1.4
DIP SWITCHES AND JUMPER SETTING

1.5

1.5.1 DIP Switch Settings

1.5.2 Jumper Setting
OPERATING INSTRUCTIONS

1.6

1.6.1

1.6.2

1.6.3

1.6.4

1.6.5

1.6.6

1.6.7

1.6.8

1.6.9

1.6.10

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

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

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

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

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

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

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

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

Self-Test
Hexadecimal Dump Function

Paper-out Detection and Forms Override Function . . . . . . . 1-21

Error Conditions
Buzzer Operation
Printer Initialization
Default Values
Sheet Loading and Sheet Ejection
Tear-off Function
LEVER, G, ADJUST

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

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

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

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

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

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

1-1
1-3

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

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

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. .

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

1-3
1-9
1-14
1-14
1-16
1-18
1-18
1-19
1-20
1-20
1-20

1-21
1-21
1-21
1-22
1-22
1-23
1-24

1.6.11
MAIN COMPONENTS

1.7

1.7.1

1.7.2

1.7.3

1.7.4 Printer Mechanism (M-5

1.7.5 Housing

printer Protection for Heavy-Duty Printing . . . . . . . . . . . . . . . . . . . . . 1-25

C062

MAIN Board (Main Control Circuit Board) . . . . . . . . . . . 1-26

C062

PNL Board (Control Panel Circuit Board) ............. 1-27

C062 PSB/PSE

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

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

Board (Power SupPlY Circuit Board) . . . 1-27

E10/M-5E60)

1

-i

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

1-26

1-28
1-28

REV.-B

LIST OF FIGURES

Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.

Figure 1-8.
Figure 1-9.
Figure l-10.
Figure 1-11.
Figure 1-12.
Figure 1-13.
Figure 1-14.
Figure 1-15.
Figure 1-16.

Exterior View of the
Pin Configuration

Printable Area for Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Printable Area for Continuous Sheets
Character Matrix

Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Self-Test Printout
Hexadecimal Dump Function
Lever Positions

LQ-570/l

C062
C062
C062
Model-5El

Housing

070 Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

MAIN Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PNL Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PSB/PSE Board

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

LQ-570/1070

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

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

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

O/5E60 Printer Mechanism

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-3

. 1-6

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

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

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

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

1-6

1-13

. 1-14

. 1-16

1-20
1-20
1-24

. 1-26
. 1-27

1-27
1-28
1-28

Table 1-1.
Table 1-2.
Table 1-3.
Table l-4.

Table 1-5.
Table 1-6.
Table l-7.
Table 1-8.
Table 1-9.
Table 1-10.

Table 1-11.
Table 1-12.
Table 1-13.
Table 1-14.

LIST OF TABLES

Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Units
Specifications for Cut Sheets

Specifications for Cut Sheets
(Carbonless Duplicating Paper)
Specifications for Continuous Sheets
Envelopes
Label Specifications
Printing (Text Mode)

Printing (Bit Image Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Character Matrix and Character Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connector Pin Assignments and Signal Functions . . . . . . . 1-14

Settings for DIP Switch 1
Settings for DIP Switch 2

International Character Set Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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

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

(SW1)

(SW2)..........

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

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

.

1-1

1-2
1-4

1-5
1-5
1-5
1-5
1-10

. 1-11
1-12

1-18

1-18

1-19

Table 1-15.
Table l-16.

Page Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lever Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 -ii

. 1-19

.

......... 1-24

1.1 FEATURES

The

LQ-570/l

compatible with the LQ-5 10/550/1010. The printer’s main features are as follows:

●

Use of
Ability to print multi-point fonts
Ability to receive and print raster graphic images
Compatibility with the

●

Printing speeds: 225 characters per second
252

CPS

210

CPS

84

CPS

64

cps (LQ, 10 cpi)

●

Optional interface card

Clear, easy-to-read printing with standard EPSON fonts

●

Multiple fonts resident in the printer

●

9 LQ fonts (Roman, Saris

1 draft font

●

Control panel switch selection of fonts, condensed, and cut-sheet feeder

●

Optional tractor unit for push-pull tractor feed
Flexible handling of continuous paper

●

Three ways to insert continuous paper (front/bottom/rear path)
Auto backout and auto loading (rear insertion)
Use of continuous paper without removing
Attachment of standard tractor unit in either of two positions (push/pull)
Easy handling of cut sheets with the optional cut-sheet feeder

●

Two ways to insert cut sheets (front/top)
Auto loading

070 are small, light-weight, low-cost, printers with advanced paper handling that is

ESC/P

2 control codes

LQ/SQ

(draft, 12 cpi)
(draft, 10 cpi)

(LQ, 12 cpi)

series available on the market

(CPS)

(high-speed draft, 10 characters per inch (cpi))

Seri~,

Courier, Prestige, Script, OCR-B, Script C, Orator, Orator-S)

(CSF) bin

CSF

REV.-B

The

LQ-570/l

(

options ensure compatibility with a wide variety of computers. Table 1-1 lists the interface options, Table

1-2 lists the optional units available for the

the

LQ-570/l

Printing is not possible for the following baud rates :

NOTES: Refer to the “Optional Interface Technical Manual” for details.

070 are equipped with the standard EPSON 8-bit parallel interface. Various interface

LQ-570/l

070.
Table 1-1. Interface Options

Model

C82305
C82306
C82307
C82308

C82310
C82313

The asterisks
depending on the country. For instance, in the U.S. the last digit is 1.

(’)

in the table above represent the last digit of the part numbers. This digit varies,

Serial interface card (inch screw)
Serial interface card (mini screw)

32KB serial interface card (inch screw)
32KB serial interface card (mini screw)
32KB parallel interface card
32KB

.

IEEE-488 interface card

070, and Figure 1-1 shows an exterior view of

Description

1800, 200, 134.5, 110, 75 bps.

1-1

REV.-B

Model

C80637*
C80638*
C80639*
C80640*

C80019*

C80022*

7753
7754
7768
7770

Table 1-2. Optional Units

Description
Single-bin cut-sheet feeder (80-column)
High-capacity cut-sheet feeder (80-column)

SingI-bin

High capacity cut sheet feeder (1 36-column)

Tractor unit (80-column)
Tractor unit (1 36-column)
Fabric ribbon cartridge (80-column)
Fabric ribbon cartridge (1 36-column)
Film ribbon cartridge

1

Film ribbon cartridge (1 36-column)

cut sheet feeder (1 36-column)

(80-columd

Note:

When a part number in the table above is followed by an asterisk (’), the last digit of the number
varies, depending on the country. For example, in the U. S., the model number for a single-bin
cut-sheet feeder (80-column) is

C80@.

3’7

(LQ-570)

(LQ-107O)

Figure 1-1. Exterior View of the

1-2

LQ-570/1070

1.2 SPECIFICATIONS

REV.-B

This section provides specifications

1.2.1 Hardware

Printing method
Pin configuration

Specifications

Serial, impact, dot matrix
24 wires

for the

(12

X 2 staggered, diameter 0.2 mm)

1/90”

-1_

LQ-570/l

Wires 1 Wires 2

- ------’$

------$ ~

070 printer.

f~
II

1,

I

ii

j+--------

~ j +L____

~

\ ~ +;-------

I

//

1:

/+

w

--

/

‘

!!’’0’”

1/90”

-

1/60” i

i

i

1

/60”

Figure 1-2. Pin Configuration

Feeding methods

Friction feed (front/top)
Push tractor feed (rear)
Pull tractor feed (front/bottom)

Push-pull tractor feed (with optional tractor) (rear)
Line spacing
Paper insertion

Paper-feed speed

NOTE: The points below provide precautions for

1/6 inch, 1/8, or programmable in units of 1/360 inch

Friction feed Front or rear side

Tractor feed Front,

Friction without

CSF

Friction with CSF

Tractor

bottom, or rear side

msec.(1/6-inch

.

77.6

2.2 inches per second

77.6

msec (1/6-inch

2.2

ips

(continuous)

77.6

msec (1/6-inch

2.2

ips

(continuous)

feed)

(ips) (continuous)

feed)

feed)

handling paper.

1. Friction feed (release lever in FRICTION POSITION).

Paper must be loaded from the front or top entrance.
Do not use continuous paper.

Do not perform any reverse paper feeds within the top 8.5 mm (.34

in.),

bottom 22 mm (.87
(top entrance), or bottom 40.2mm (1.6 in.) (front entrance) area.
Do not perform reverse feeds greater than 1/6 inch after a paper end has been detected.

in.)

1-3

REV.-B

● Use the paper tension unit.

● Do not use multi-part cut-sheet forms, except with front insertion.

● Do not perform reverse feeds greater than 1/6 inch when using envelopes.

2. Push tractor feed (release lever in REAR PUSH POSITION).
Paper must be loaded from the rear entrance.

Release the friction-feed mechanism.
Multi-part forms must be spot pasted beyond the perforation between the tractor holes.
Paper for multiple copies must be carbonless multi-part paper.

Use the paper tension unit.
Do not perform reverse feeds greater than 4/15 inch.
Since accuracy of paper feed cannot be assured after the paper end has been detected, please

do not perform reverse feeds after detection of a paper end.

3. Push-pull tractor feed (release lever in REAR PUSH POSITION).
Paper must be loaded from the front, rear, or bottom entrance.
Release the friction-feed mechanism.
Remove the paper tension unit and attach the pull tractor unit.
Ensure that there is no slack in the paper between the platen and the pull tractor.
Precisely adjust the horizontal position of the pull tractor and push tractor sprockets.
Paper for multiple copies must be spot pasted beyond the perforation between the tractor holes.
Paper for copies must be a carbonless multi-part paper.

Do not perform reverse feeds greater than 4/15 inch.
Do not perform reverse feeds after the paper end has been detected.

4. Pull tractor feed (release lever in PULL POSITION).

●

Paper must be loaded from the front or rear entrance.
Release the friction-feed mechanism.

●

Remove the paper tension unit and attach the pull tractor unit.

●

Insert the paper from either front or bottom.

●

Paper for multiple copies must be spot pasted beyond the perforation between the tractor holes.

●

Paper for copies must be a carbonless multi-part paper.

●

Do not perform reverse feeds.

●

Paper specifications See tables 1-3, 1-4, 1-5, 1-6, and 1-7

Table 1-3.

Width

Length
Thickness
Weight
Quality

S~ecifications

148 mm to 257

(top insertion)

182 mm to 257 (*364) mm (7.2 in. to 10.1 (* 16.5) in.)
(front insertion)
364 mm (1 4.3 in.), maximum

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

14 lb. to 24 lb. (52.3
Standard paper (photocopier paper, etc.)
Recycled paper (at normal temperatures)

for Cut Sheets (One-Part Paper)

(’420)

mm (5.8 in. to 10.1 (* 16.5) in.)

g/m2

to 90

g/m2)

1-4

(*136-column)

Table 1-4. Specifications for Cut Sheets (Carbonless Duplicating Paper)

Width
Length
Thickness

Weight

Quality
Copies

182 mm to 216 (’364) mm (7.2 in. to 8.5 (* 14.3) in.)

257 mm to 297 mm (10.1 in. to 11.7 in.)

0.065 mm to 0.14 mm (0.0025 in. to 0.0055 in.) - single sheet

0.12 mm to 0.32 mm (0.0047 in. to 0.012 in.) - total
17 lb. to 24 lb. (52.3
12 lb. to 15 lb. (40

Carbonless duplicating paper
4 sheets (1 original and 3 copies)

Table 1-5. Specifications for Continuous Paper

g/m2 to 90

g/m2 to 58

g/m2)

g\m2)

- each

- single sheet

(*136-column

REV.-B

NOTES:

Width

Thickness

Weight 14 lb. to 22 lb. (52.3

Quality Standard paper or carbonless duplicating paper

Copies

Size

Thickness

Weight 12 lb. to 24 lb. (40
Quality Bond paper, standard paper, airmail
Copies

Printing on envelopes is available only at normal temperatures and only using top insertion.

●

Keep the longer side of the envelope horizontal during insertion.

●

Place the left edge of a No. 6 envelope

●

101 mm to 254 (“406) mm (4.0 in. to 10.0 (* 16) in.)

0.065 mm to 0.10 mm (0.0025 in. to 0.0039 in.) - single sheet

0.065 mm to 0.32 mm (0.0025 in. to 0.012 in.) -total

g\m’

to 82

g/m2)

- single sheet

12 lb. to 15 lb. (40

Recycled paper (at normal temperatures)
4 sheets (1 original and 3 copies)

No. 6= 166 mm X 92 mm
No. 10= 240 mm X 104 mm

0.16 mm to 0.52 mm (0.0063 in. to 0.0197 in.)
Differences in thickness within the printing area must be less than

0.25

mm (0.0098 in.)

Not available

g/m2 to 58

Table 1-6. Envelopes

g/m2 to 91

g/m2)

g/m2)

at”the sheet guide setting mark.

- each

(*:1 36-column)

NOTES: ●

Table 1-7. Label Specifications

Label size

Copies
Thickness

Printing on labels is available only at normal temperatures.

●

Labels must be of the fanfold type.

●

Labels with pressure sensitive paper must be spot pasted beyond the perforation between
the tractor holes. The total thickness must be less than or equal to 0.3 mm (0.01 18 in.).
Labels can be printed out only if the temperature is between 5 and 35 degrees C (41 and
95 degrees F) and humidity is between 10 % and 80 % RH.

●

Examples of labels AVERY CONTINUOUS FORM LABELS

Labels must be used with the pull tractor (front or bottom).

●

Do not perform reverse feeds.

●

2 1/2 in. X 15/16 in.
4 in. X 15/16 in. “
4 in. X 1 7/16 in.
Not available

0.07 mm to 0.09 mm (0.0028 in. to 0.0031 in.) - base paper

0.16 mm to 0.19 mm

AVERY MINI-LINE LABELS

(0.0063

1-5

in. to 0.0075 in.) -total

REV.-B

Printable area

See figures 1-3, 1-4, and 1-5

4

364mm

(14.3”)

max.

v

top insertion 148 - 257 mm (5.8

148 - 257

front insertion 182

182

*

~8.5

‘

‘:

“
t

;

:j

*

.J-

I

Y

(x

420) mm (5.8 - 10. 1“ {x 16.5))

-

-

257 (* 364) mm (7.2

.,, Printable area max. 203.2 mm (8 in.)

F

J&L

257 mm (7.2 - 10 1“)

mm

(0.53”)
or more

~’~~~’

,,,mm

- 10.

- 10.

1“)

1“ (x 14.3’”))

-1 )

-1

7

.A

.,

7

/,

(* 136-column)

(80-column):

+1)

3.0 mm (O. 12 in.) or more when paper width is less than 229 mm (9 in.).
24 mm (0.9

in.)(top

insertion)\26

mm (1.0 in.)(front insertion) or more when paper width is 229 mm

(9.0 in.) to 257 mm (10.1 in.).

I

(136-column:)

3.0 mm (O. 12 in.) or more when paper width is less than 392 mm (1 5.4 in.). 29 mm (1.14 in.) (top
insertion) /31 mm ( 1.22 in.) (front insertion) or more when paper width is 392 mm (1

5.4

mm (1 6.4 in.).
Paper-feed accuracy cannot be assured within 22 mm (0.87 in.) from the bottom edge of paper (top
insertion).
Paper-feed

accutacy cannot be assured within 40.2 mm (1 .58 in.) from the bottom edge of paper

(front insertion).
Paper-feed accuracy cannot be assured within 22 mm (0.87 in.) from the top edge of paper.

in.) to 420

Figure 1-3. Printable Area for Cut Sheets

Printable 0
area

J-

9 mm (O 35”)

;r:’r;,3~,)

or more

t

Printable
area o

1

I

101.254 mm (4 10”)

L

-:-

101.254 x406)

*

1*

1’

Max. 203.2 mm
Max. 345.4 mm(i 3.6”): 136 cdum

0
0
0

0

0
0
0

L

:

0
0
0
c

:

0
0
0

(4. 10“ (x

Printable area

(8”):

16))

80 column

J

I*?

1-

0

0
0
0
0
0

0
0
0
0

0

0

0

0
0
0

Figure 1-4. Printable Area for Continuous Sheets

1-6

(’

136-column)

REV.-B

(80-column):

● 1) 13 mm (0.51 in.) or more when a paper width of 101 mm (4 in.) to 241 mm (9.5 in.) is used.

24 mm (0.9
of 254 mm (10 in.) is used.

(1 36-column):

13 mm (0.51 in.) or more when a paper width of 101 mm to 401.3 mm (4 in. to 15.8 in.) is used.
15 mm or more when a paper width of 381 mm to 406 mm (15 in. to 16 in.) is used. 13 mm (rear

insertion) (0.5 1 in.) /1 7 mm (front/bottom insertion) (0.67 in.) is used. ( 136-column).

in.)(rear insertion)\ 26 mm (1.0 in.)(front/bottom insertion) or more when a paper width

Ink ribbon

Reliability

Life of

Safety approvals

Electrical specifications

printhead

Type #7753 black ribbon cartridge (80-column)

#7768 film ribbon cartridge (80-column)
#7754 black ribbon cartridge (1 36-column)

#7770 film ribbon cartridge (1 36-column)
Color Black
Life 2 million characters at 48 dots/character (black ribbon)

(80-column) 0.2 million characters at 48 dots/character (film ribbon)
(136-column) 0.3 million characters at 48 dots/character (film ribbon)

Dimensions of ribbon cartridge

Fabric Type:
(80-column): 293 mm (W) X 34 mm (H)
(136-column): 468.3 mm (W) X 34 mm (H) X 72 mm (D)

Film Type:
(80-column): 293 mm (W) X 34 mm (H) X 72 mm (D)
(136-column): 468.5 mm (W) X 34 mm (H) X 72 mm (D)
Mean cycles between failures
Mean time between failures
200 million strokes (black ribbon)

100 million strokes (film ribbon)
Safety standards UL1 950 with D3 (U.S. version)

CSA22.2#220

EN 60950 (TUV) (European version)

Radio frequency interference

FCC class B (U.S. version)

VDE0871 (self-certification) (European version)

120 V version

Rated voltage
Input voltage range
Rated frequency

Input frequency
Rated current
Power consumption

insulation resistance

Dielectric strength

(MCBF) 3 million lines (excluding printhead)

(MTBF) 4000 power on hours (POH) (25% duty)

(RFI)

X 72 mm (D)

VAC

120

103.5 to 132

50 to 60 Hz

49.5 to 60.5 Hz

2.0 A
Approx. 33 W (during a
test in draft mode, 10 cpi)

10 megohms, minimum (at 500
VDC between AC line and
chassis).

1000

VAC rms for 1 minute or

1200

VAC rms for 1 second

(between AC line and chassis)

VAC

self-

1-7

REV.-B

220 to 240 V version Rated voltage

Environmental
conditions

Physical specifications (80-column):

Temperature range 5 to 35 degrees C (41 to 95 degrees F) - operating

Humidity

Resistance to shock 1 G, within 1 ms – operating

Resistance to

vibration

Weight 6.1 kg,
Dimensions 434 mm (width) X 368 mm (depth) X 151 mm (height)

(136-column):
Weight 8.4 kg,
Dimension 609 mm (width) X 368 mm

220 to 240
Input voltage range
Rated frequency
Input frequency
Rated current
Power consumption

Insulation resistance

Dielectric strength

–30 to 60 degrees C (–22 to 140 degrees F)

10 to 80 % RH - operating

5 to 85 % RH – storage

2 G, within 1 ms - storage

0.25 G, 55 Hz, max. - operating

0.50 G, 55 Hz, max. - storage

approx. (13.5 Ibs., approx.)

17.4 in. (width) X 14.7 in. (depth) X 6 in. (height)

approx. (1 8.6 Ibs., approx.)

24.4 in. (width X 14.7 (depth) X 6 in. (height)

198 to 264

50 to 60 Hz

49.5 to 60.5 Hz

1.0 A

Approx. 33 W (during a self-test

in draft mode, 10 cpi)

10 megohms, minimum (at 500

VDC between AC line and chassis).

1250

VAC rms 1 minute or 1500
VAC rms 1 second (between AC

line and chassis)

(depth)X

VAC
VAC

– in shipment container

151 mm (height)

1-8

1.2.2 Firmware Specifications

REV.-A

Control code

Printing direction
Input data buffer

Character code
Character tables

Fonts and pitches

Bit-map fonts

Scalable fonts

Printing modes

ESC/PTM level

(EPSON standard code for printers)
Bidirectional with logic seeking
8KB (when SW 1-7 is OFF)

OKB (when SW 1-7 is ON)

8 bits
Italic character table, PC 437, PC 850, PC 860, PC 863, PC 865

(PC indicates character table for personal computer)

EPSON Roman

EPSON Saris

EPSON Courier
EPSON Prestige
EPSON Script
EPSON Script C
OCR-B
EPSON Orator
EPSON Orator-S 10
EPSON Draft
EPSON Roman

EPSON Saris Serif 8 pt to 32 pt
Selection and mixture of the following modes are allowed, excluding 15 cpi
condensed mode:

O Print quality (draft/letter quality)
O Character pitch (10, 12, 15, or proportional)

O Condensed
O Double-width
O Double-height
O Emphasized
O Double-strike
O Italic
O Underlined
O

Double-underlin~d

O Overscore
O Strike-through
O Outline
O Shadow

ESC/P

2

10, 12, 15, proportional

Serif

10, 12, 15, proportional

10,

12,

15
10, 12
10, 12

proportional

10
10

10, 12, 15

8 pt to 32 pt

1-9

REV.-B
NOTES: High-speed draft is valid if the printer status is as follows:

●

High-speed draft is selected by DIP switch.
Emphasized character mode is not selected.

●

Condensed character mode is not selected.

●

●

Draft is selected.
No D/L (download) characters are sent to the printer,

●

●

The horizontal dot space of characters is not set.

No bit image is sent to the printer.

●

●

Super/subscript is not selected.
(The printer switches back into normal mode to print emphasized, condensed, or download
characters and bit images.)

Printing speed See tables 1-8 and 1-9.
Printing columns See Table 1-8.
Character matrix See Table 1-10.
Character size See Table 1-10.

I

T

10

12

15

cpi:
Cps:

LQ:

HSD:

Print Pitch

0 80 (* 136)

1

0

1

0

1

characters per inch
characters per second
letter quality
high-speed draft

Condensed

Table 1-8. Printing (Text Mode)

Printable Character Pitch

Columns

137 (“233)

96 (* 164)

160 (*272)

120(”204)

(cpi)

10

17.1
12

20

15

Invalid

Printing Speed

Draft

210

180 120 —

252 84 —
210
315

LQ
70 225

140 —

105 —

(CPS)

HSD

(* 136-column)

1-10

REV.-B

Pins

8
8
8

I

Double-speed, dual-density
8
8
8

I

CRT graphics
24
24

24 CRT graphics II
24
24

dpi: dots per inch

ips:

Bit Image Printing Mode

I

Single-density
Dual-density

Quadruple-density
CRT graphics

II

Single-density
Dual-density

Triple-density

Hex-density

inches per second

Table 1-9.

I

Density

I

I

Printing (Bit Image Mode)

}

(dpi)

60
120
120

240

80 640 (“ 1088)
90
60

120 960 (“ 1632) 10.5

90

180

360

Printable Dots

480 (*8 16)

(“

1632)

960

I

960 (“1632)

1920 (*3264)

I

720 (“1224)

480 (*8 16)

720 (“224) 14.0

1440 (“2448) 7.0

2880 (*4896) 7.0

(
I

I

I

Printing Speed

21.0

10.5

21.0

10.5

10.5

14.0

21.0

(* 136-column)

(ips)

I

1-11

REV.-A

Printing Mode

High-speed draft, 10 pitch

Table 1-10. Character Matrix and Character Size

I

Face Matrix

7

x

22

HDD I Character Size I Unit

I

90 2.0 x 3.1

ESC

—

sp

Draft, 10 pitch

Draft, 12 pitch
Draft, 15 pitch
Draft, 10 pitch, condensed
Draft, 12 pitch, condensed

LQ,

10 pitch

LQ,

12 pitch

LQ,

15 pitch

LQ,

10 pitch, condensed

LQ,

12 pitch, condensed

LQ,

proportional Max. 37 X 22

LQ,

proportional, condensed

LQ,

proportional, super/subscript

LQ,

proportional, super/subscript,

condensed

9 x 22 120
9 x 22

I I

7 X 16 120

31 x 22 360 2.2 x 3.1 180
27 X 22 360
22 X 16

l–

Min. 18 X 22

Max. 28 X 16 360 1.8 X 2.3 180
Min. 12 X 16 360 0.7 X 2.3

I

—
—

—

—
—

—

—

120 1.9 x 3.1

240
240

360 1.6 X 2.3
360

I

360

360
360

360
360

360
360

I

I

I

1.9 x 3.1

1.0 X 2.3
—

—

1.9 x

3.1

—

I

–

2.6 X 3.1

1.0 x 3.1
—

—

—

—

120

I

I

120
120
120
120

180

180
180
180
180

180

180

I

NOTES: .

HDD is horizontal dot density in dots per inch.

● Face matrix and character size indicate the size of the maximum character. This value is

dependent on paper, ribbon, etc.

● Unit ESC sp (which also can be sent as unit, followed by the character string CHR(&h20)),

indicates the minimum length to be added to the right of the character specified with the

ESC

sp control code.

● “-”

indicates that the character matrix is reshaped by printer firmware. Character width

becomes half of the noncondensed character width.

1-12

REV.-A

10
11
12
13

14
15
16
17
18

19
20
21
22
23
24

1

2
3

4

L

E

:

F

7

T

8
9

s
P
A
c
E

I

(Typical draft character)

Ascender area

!-

Descender area

<

Face width

9

dots

Character width (CW)

(Typical LQ character)

1

2
3
4

10

11
12
13

14

15
16
17
18

19
20
21
22
23

24

L

5

E

6

F

7

T

8
9

s
P

A

c
E

R

I

G
H
T

s
P

A

c
E

.

>

Ascender area

I

Descender area

<

(Typical

15 pitch and condensed

Face width

29 dots

LQ,

excluding 15 pitch)

15 dots for

R

I

G

H
T

s

P
A
c

E

9

La

12 dots (10
15 dots (12
16 dots (15
14 dots (condensed 10
12 dots (condensed 12

10
11

12

13
14
15
16
17
18
19
20
21
22
23
24

CPI)

120

DPI

CPI)

180

DPI

CPI)

240

DPI

(Subscript character)

9

L
E
F

T

s

P

A

c

E

CPI)

240

DPI

CPI)

240

DPI

.

—

R

I
G
H
T

s
P

A
c

E

—

Figure 1-5. Character Matrix

+

36 dots (10 CPI)’360
30 dots (12
24 dots (15

21 dots (condensed 10

18 dots (condensed 12

CPI)
CPI)

(Subscript character)

1

2

L

3

E

4

F

5

T

6
7

s

8

P

9

10

A

11

c

12

E

13
14
15
16

360
360

DPI
DPI
DPI

CPI)
CPI)

360
360

DPI
DPI

—

R

I

G
H
T

s
P
A

c
E

—

1-13

REV.-A

1.3 INTERFACE OVERVIEW

The printer has a parallel interface with the specifications described below.

1.3.1 Parallel Interface

Specifications for the 8-bit parallel interface are as follows:

Data format
Synchronization
Handshaking

Signal level

Adaptable connector

Data transmission timing

BUSY

ACKNLG

DATA

STROBE

o.5/is

min.

8-bit parallel
STROBE signal
BUSY and

ACKNLG signal

TTL-compatible

57-30360 (Amphenol) or equivalent
See Figure 1-6.

{

o.5Lls

min.

0.5/S

min.

~;

5/S

typ.

5/.fs

typ. ‘

Figure 1-6. Data Transmission Timing

Table 1-11 shows the connector pin assignments and signal functions of the 8-bit parallel interface.

Table 1-11. Connector Pin Assignments and Signal Functions

Pin No.

Signal Name

Return

Pin No.

Dir. Functional Description

10

11
12

13

1

STROBE

19

IN

STROBE pulse to read the input data. Pulse width must
be more than 0.5ps. Input data is latched at falling
edge of this signal.

2
3
4
5
6
7
8
9

DATA 1
DATA 2

20

21
DATA 3 22
DATA 4 23
DATA 5 24
DATA 6 25
DATA 7 26
DATA 8

ACKNLG

27

28

IN

IN
IN
IN
IN
IN
IN
IN

OUT

Parallel input data to the printer.
HIGH level means data 1.
LOW level means data O.

This pulse indicates data has been received and the
printer is ready to accept more data. Pulse width is

BUSY
PE

29
30

OUT
OUT

approximately 11
HIGH indicates the printer cannot accept more data.
HIGH indicates paper out. This signal is effective only

Ks.

when the ERROR signal is LOW.

SLCT

—

OUT

Always HIGH output. (Pulled up to +5

Vthrough

a 3.3K

ohm resistor.)

1-14

Table 1-11. Connector Pin Assignments and Signal Functions (Cont.)

Pin No. Signal Name

14 AUTO FEED-XT

15

19

to 30

16
17
18

31

32
33
34
35

36

GND

Chassis

GND

I NIT

ERROR

GND

SLCT-IN

GND

Return

Pin No.

—

—

16

—

—

Dir.

IN

—
—

IN

OUT

—

OUT

IN

Functional Description

If LOW when the printer is initialized, the printer
automatically performs a line feed upon input of the
CR code (Auto LF).

Not used.
Ground for twisted-pair grounding.
Chassis ground level of printer.
Not used.
Ground for twisted-pair grounding.
Pulse (width: 50ws, min., active LOW) input for printer

initialization.
LOW indicates an error has occurred in the printer.

Ground for twisted-pair grounding.
Not used.

Always HIGH. (Pulled up to
resistor.)

DC

l\DC3

control is disabled.

+5V

through 3.3K ohm

NOTES: 1. “Dir.” indicates the direction of the signal flow as viewed from the printer.

2. “Return Pin No.” denotes a twisted-pair return line.

3. The cable used must be shielded to prevent noise.

4. All interface conditions are based on TTL levels. Both the rise and fall times of all signals
must be less than

5. The AUTOFEED-XT signal can be set to LOW by DIP switch 2-4.

6. The SELECT-IN signal can be set to LOW by jumper 3.

7. Printing tests, including those of the interface circuits, can be performed without using

external equipment by setting DATA 1- DATA 8 pins to the STROBE signal.

0.21.Ls.

1-15

REV.-A

1.4 CONTROL PANEL

On the control panel are: a power button (labeled OPERATE), 7 non-lock type buttons, and 19 indicators.

Figure 1-7. Control Panel

BUTTONS

(1) OPERATE Button
This button turns on the power supply to the printer.

(2) PAUSE Button
This button controls printer action. Pressing the button toggles the printer between PAUSE condition
(no printing, no paper feeding, and not accepting data) and RUNNING. This button is also used in
conjunction with the
initialization, as if ESC

ALT button as a buffer clear to clear the input buffer and perform software

@

had been received.

(3) LINE FEED/FORM FEED Button
Pressing this button performs a line feed, and holding down the button performs a form feed,
irrespective of the PAUSE/RUNNING condition. This button is also used in conjunction with the
button as the micro reverse feed.

(4) LOAD/EJECT Button

Pressing this button loads or ejects the paper. Refer to Section 1.6.8, Sheet Loading and Sheet Ejection.

This button is also used in conjunction with the

(5) TEAR-OFF/BIN

In tractor-feed mode, pressing this button advances continuous paper to the tear-off position, and the
TEAR-OFF indicator is lit. In friction-feed mode, pressing this button toggles between bin 1 and bin 2,
and the selected BIN indicator is lit.

(6) ALT Button

This button is used only in combination with another button,

l\BiN

2 Button

ALT button as the micro forward feed.

ALT

1-16

REV.-A

(7) FONT Button

Pressing this button selects a font, and pressing it continuously selects the next one, sequentially. The

FONT LED indicates the currently selected font.

(8) CONDENSED Button

Pressing this button toggles the printing mode between normal and condensed, alternatively.

NOTE: Selections of the FONT and CONDENSED buttons

and the CONDENSED selection become effective

are stored as defaults, so that the last FONT
when the printer is initialized.

INDICATORS

(1) OPERATE (green)
Lit when the printer’s OPERATE button is on, and AC power is supplied.

(2) PAUSE (orange)

when the printer is in PAUSE-mode (no printing, no paper feeding, and not accepting data).

Lit

TEAR-OFF (orange)

(3)

when the sheet is advanced to the tear-off position.

Lit

(4)

DATA (orange)

when the printer has received data from the host. .

Lit

PAPER-OUT (red)

(5)

Lit when the paper-out detector senses no paper. Refer to Section 1.6.3, Paper-out Detection and Forms

Override Function.

(6) MULTI-PART (green)
Lit when the adjust lever is

positioned at the 4th step or higher,

(7) BIN 1 (green)

Lit when bin 1 is selected.

(8) BIN 2 (green)

Lit when bin 2 is selected.

(9) FONT (green) - Draft, Courier, Roman, Saris Serif, Prestige, Script, Script C, Orator, Orator-S, OCR-B

These indicators show the currently selected font.

(10) CONDENSED (green)

Lit when condensed mode is selected.

1-17

REV.-A

1.5 DIP SWITCHES AND

This section describes the DIP switch

1.5.1

DIP Switch Settings

The two DIP switch banks for the printer, located on control panel, function as shown in tables 1-12
through 1-15. (Note that the status of the DIP switches is read only at power on or upon receipt of the

INIT signal.)

Table 1-12. Settings for DIP Switch 1

No.

I

1

International character set and PC selection

2
3

I 4 I

Charactertable selection

I

5 I Graphic print direction

I

6 I High-speed draft

7

Input buffer

l-inch

8

skiD

Description

continuous

JUMPER SETTING

selections and jumper setting for the

(SW1)

ON

See Table 1-14.

Graphic

Unidir.
Invalid Valid
Invalid Valid

~aDer

ON

I

OFF

Italic

Bidir.

OFF

LQ-570

I

printer.

Factory

Setting

ON
ON

ON
OFF
OFF
OFF
OFF
OFF

t

No.

1

Page length of continuous paper

2

Auto tear-off

3

Auto LF

4

Table 1-13. Settings for DIP Switch 2

Description

ON

See Table 1-15.

ON
ON

(SW2)

OFF

OFF
OFF OFF

Factory
Setting

OFF
OFF

OFF

1-18

1-1

Table 1-14. International Character Set Selection

1-2 1-3

Country

REV.-A

Pc

ON
ON
ON

ON
OFF
OFF
OFF

OFF

ON ON

ON
OFF ON
OFF

ON ON

ON
OFF
OFF OFF

OFF

OFF

OFF

ON

Us.
France
Germany
U.K.

Denmark 1
Sweden
Italy
Spain 1

Table 1-15. Page Length

2-1

OFF

ON OFF

OFF

ON ON

2-2

OFF

ON

437
850
860
863

865
(437)
(437)
(437)

—

L

Page Length

11 inches

12

inches

8.5 inches
70/6 inches

When SW 1-4 is OFF,

If graphic table was selected by

ESC

t 1, PC becomes 437.

When SW 1-4 is ON,
if italic table was selected by

ESC

t O, country setting becomes U.S.

1.5.2 Jumper Setting

If Jumper 3 is connected to GND, the SLCT-IN signal is fixed to LOW.

1.

1-19

REV.-A

1.6 OPERATING INSTRUCTIONS

This section describes the self-test and hexadecimal dump functions and also includes the error states,
printer initialization, and buzzer operation.

1.6.1 Self-Test

To run the self-test using draft mode, turn the printer on while pressing the LOAD/EJECT button. To

run the self-test using the letter quality (LQ) mode, turn the printer on while pressing the LINE

FEED\FORM FEED button. You can stop or start self-test printing by pressing the PAUSE button. When

you are satisfied with the self-test, stop the printing by pressing the PAUSE button and turn the printer
off.

The firmware revision number is printed on the first line of the self-test, followed by the current DIP
switch settings.

Xxxxxx

Swl-1

Country/PC

U.S.A.

France
German

(J.

y

K .

Oe nma r k
Swedeil

I

ta 1 ?

S pd 1

i

I

‘c

437

‘-

.

.

(j

1-2 1“3 1-4

on on

on

o n o n off
on

off Orl

on

off off off

off

on on

o f f“

o n

o

t f’ o I t o n

(,I f f ~ t

on on

,:.)

I I

Ot f

f ~ f f ~ f f

on

~

off

off

off

off

oft

of

f

High

speed draft

Va 1

id

SWI-6

off

Invalid on

Receive buffer SW1-7

Valid

I

nva

1 inch

1 rival

‘ ~ ~

I ;

1

~

i

d

skip

id

k

off

o n

SW1-8

off

to f I

SW2-1 2-2

off off

~

t i

Figure 1-8. Self-Test Printout

1.6.2 Hexadecimal Dump Function

To put the printer in hex. dump mode, power it on while pressing both the LOAD\ EJECT and LINE

FEED\FORM FEED buttons. In hex. dump mode, the printer prints out the hexadecimal representation

of the input data, along with the corresponding ASCII characters. This function is valuable for checking

the data the printer has received from the host. If input data is a nonprintable character code, a period

(.) is printed in the ASCII column.

:6 40

LB 52 00 IB

68

20 20 54

bD

70 6C 65 20 6F

6D 70

75

69

73 20 66 65

0.4 20 20 20 20 20

69 73

20 70 72

Figure 1-9. Hexadecimal Dump

74 01

20 69
66 20 61 20 64 61 74 61 20
69

74

61

69 74

IB

36 12 LB 50 18 70

73 20 61 6E 20 65 78

6E 74 6F 75 74 2E 20 54

75

72 65 20 6D 61 6B 65

20

65 61 73 79 20 66

.@. R. . t. .6.

00

61
64

60

73 is f ea

6F .

This is an exa

mple of a data d

ump printout. Th

Function

.P.

tu

re makes

i

t easy fo

D.

1-20

REV.-A

1.6.3

Paper-out Detection and Forms Override Function

When the paper-out detector, attached to the printer mechanism, detects a paper-end, the printer first
performs a forms override. If paper loading fails, the BUSY signal goes HIGH, the PAPER OUT indicator
is lit, the interface PE signal becomes HIGH, the ERROR signal becomes LOW, and the printer enters

the PAUSE condition automatically.

By ignoring the paper out, the printer can print additional lines after the paper out is detected. This
function is called the forms override function. After you load new paper and press the PAUSE button,
the printer recovers to the RUNNING condition, and printing restarts.

The printer enters the paper-out condition only when a paper-out is detected after the printer performs

paper loading.

1.6.4 Error Conditions

If any of the following error conditions are detected, the printer automatically enters PAUSE condition.

●

Home position is not detected at printer mechanism initialization.

●

Home position is detected during printing.

The PAUSE button is pressed, and the printer enters PAUSE condition.

●

●

A paper-out is detected after performing paper loading operation.

If parallel interface is selected, the following interface signals are output to indicate the error and to
stop data transmission:

The BUSY signal becomes HIGH.
The ERROR signal becomes LOW.

No ACKNLG pulse is sent.

1.6.5 Buzzer Operation

The buzzer sounds under the following conditions:

. A paper-out error is detected (beeps 3 times for 0.1 second, with 0.1 second intervals).

● Abnormal carriage movement is detected (beeps 5 times for 0.5 second, with 0.5 second intervals).

● A panel setting is accepted

1.6.6

Printer Initialization

There are three initialization
initialization.

(1) Hardware initialization

(O. 1 second beep).

methods: hardware

initialization, software initialization, and panel

This type of initialization takes place when the printer power button is turned on (and the AC power

cord is plugged in) or when the INIT signal is received.

When the printer is initialized, it performs the following actions:

1-21

REV.-A

(a) Initializes printer mechanism.
(b) Clears input data buffer.
(c) Clears downloaded character set.
(d) Clears print buffer.
(e) Returns printer settings to their default values.

(2) Software initialization

Input of the
perform functions (a), (b), and (c) above. The settings changed by the last
maintained.

(3) Panel initialization

This printer can be initialized by pressing the PAUSE button in combination with the ALT button. When

the printer is initialized from the front panel, functions (a) and (c) above are not performed. The settings

changed by the last

ESC @

command also initializes the printer. Printer initialization by ESC @ code does not

SelecType

SelecType

operation are maintained.

operation are

1.6.7 Default Values

When the printer is initialized, the following default values are set:

Page position
Left and right margins
Line spacing

Vertical tabs

Horizontal tabs
Family number of type style
Download characters

Character spacing
Printing effects
Condensed printing
Printer condition

The current paper position becomes the top-of-form position
Released

1/6 inch
Cleared
Every 8 characters (relative)
Last font selected from the panel
Kept - software initialization
Cleared – hardware initialization

10 cpi
Cleared, except condensed printing
Last setting selected from the panel
RUN

1.6.8 Sheet Loading and Sheet Ejection

The release lever can disengage the pull-tractor unit drive mechanism, giving this printer improved
paper-handling for functions that utilize the release lever. These functions are described below:

Automatic cut-sheet loading without the cut-sheet feeder

Move the release lever to the friction-feed position, and place the sheet along the paper guide (top or
front). A few seconds later, the sheet is automatically loaded to the top-of-form position and the printer
enters the RUNNING condition.

1-22