Epson DLQ-3000+ Service manual

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EPSON

24-PIN DOT MATRIX PRINTER

SERVICE MANUAL

EPSON DLQ-3000+

SEIKO EPSON CORPORATION

4008259

NOTICE

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

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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.

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The above notwithstanding SEIKO EPSON can assume no responsibility for an y erro rs in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice:

Other product names used herein are for identification purposes only and may be trademarks or registered trademarks of their respective companies.

PRECAUTIONS

Precautionar y notations throughout the tex t are categorized rel ative t o 1) personal i njury and 2) damage to equipment.

WARNING

CAUTION

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

WARNING

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

2. NO W ORK SHOULD BE PERFO RMED ON THE UNIT BY PERSONS UNF AMILIAR W ITH 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.

CAUTION

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

2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VO LT AG E, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DI SCONNECTED FROM T HE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

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

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

iii

PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of DLQ-3000+. The instruct ions and procedur es incl uded herei n are i ntended for the ex peri ence repai r tec hnic ian, and attention should be given to die precautions on the preceding page. The Chapters are organized as follows:

CHAPTER 1. GENERAL DESCRIPTION

Prov ides a general product ov erview, l ists specific ations, and illustrates the main components of the printer.

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. ADJUSTMENT

Includes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTING

Provides EPSON-approved techniques for troubleshooting.

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.

REVISION SHEET

Revision Issued Data Contents

Rev. A August 21 1997 First Release

CHAPTER 1. GENERAL DESCRIPTION CHAPTER 2. OPERATING PRINCIPLES CHAPTER 3. DISASSEMBLY AND ASSEMBLY CHAPTER 4. ADJUSTMENT CHAPTER 5. TROUBLESHOOTING CHAPTER 6. MAINTENANCE APPENDIX

Chapter 1

Product Description

1.1 Features ..................................................................................................1-1

1.2 Consumables and Options....................................................................1-3

1.3 Hardware Specification..........................................................................1-4

1.3.1 printing Specification....................................................................1-4

1.3.2 Character Specifications and Control Codes.............................1-7

1.3.2.1 Coded Character Sets.........................................................1-7

1.3.2.2 Type Faces..........................................................................1-7

1.3.2.3 Rendition .............................................................................1-7

1.3.2.4 Combination of character tables and typefaces ..................1-8

1.3.2.5 Memory Size........................................................................1-9

1.3.2.6 Character Size.....................................................................1-9

1.3.2.7 Control Codes......................................................................1-9

1.3.3 Paper Feed Specification............................................................1-10

1.3.3.1 Friction Feed (Cut sheet)...................................................1-10

1.3.3.2 Tractor Feed (Continuous paper)......................................1-10

1.3.3.3 Paper Feed Speed and Accuracy......................................1-10

1.3.4 Paper Specification.....................................................................1-11

1.3.5 Printable Area..............................................................................1-17

1.3.6 Paper Thickness Detection ........................................................1-24

1.3.7 Ribbon Cartridge.........................................................................1-25

1.3.7.1 Monochrome ribbon cartridge............................................1-25

1.3.7.2 Color ribbon cartridge........................................................1-25

1.3.8 Input Data Buffer .........................................................................1-26

1.3.9 Electric Specifications................................................................1-26

1.3.10 Safety Approvals .......................................................................1-26

1.3.11 CE Marking.................................................................................1-26

1.3.12 Acoustic Noise...........................................................................1-27

1.3.13 Reliability....................................................................................1-27

1.3.14 Environmental Conditions........................................................1-27

1.4 Interfaces ..............................................................................................1-28

1.4.1 Parallel Interface..........................................................................1-28

1.4.2 Serial Interface.............................................................................1-33

1.4.3 Optional Interface........................................................................1-34

1.4.4 Printer language..........................................................................1-35

1.4.5 Prevention Hosts from Data Transfer Time-out .......................1-36

1.4.6 Interface Selection ......................................................................1-36

1.5 Operation ..............................................................................................1-37

1.5.1 Control Panel...............................................................................1-37

1.5.1.1 Button Operations..............................................................1-37

1.5.1.2 Printer Status and LCD/LED Indicator Conditions.............1-39

1.5.1.3 Printer Status and Buzzer..................................................1-40

1.5.2 SelecType.....................................................................................1-41

1.5.2.1 SelecType Phase ..............................................................1-41

1.5.2.2 SelecType Operation.........................................................1-42

1.5.2.3 SelecType Option..............................................................1-43

1.5.3 Functions at Power On ...............................................................1-45

1.5.4 Bi-D Adjustment Mode................................................................1-46

1.5.5 Program Reload Mode................................................................1-46

1.5.6 Initialization..................................................................................1-47

1.5.6.1 Printer Initialization............................................................1-47

1.5.6.2 Initialize Defaults to the Standard......................................1-48

1.6 Main Components................................................................................1-49

1.6.1 C210MAIN Board.........................................................................1-49

1.6.2 C124PSB/PSE Board...................................................................1-50

1.6.3 Printer Mechanism......................................................................1-50

1.6.4 Housing........................................................................................1-51

Product Description

1.1 Features

The DLQ 3000+, equipped with a Bi-directional parallel interface, is the most advanced EPSON 24-pin impact-dot printer. It prints on continuous multi-part form as well as on single sheet, which makes the printer highly usable in office environment . The main features of this printer are:

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Used in Network environment with parallel interface supported

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Memory

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CSF paper quantity sensor

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Paper jam detection

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Enhanced duplex printing

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1 original plus 6 duplications in the copy mode

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Wide printable area

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70 line / A4 (0 mm can be set for the top and bottom margins at single print mode.)

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Paper thickness detection function supported

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Enables the auto and manual platen gap adjustment

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Fonts

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Bitmap fonts: 9 LQ and 1 draft typefaces

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Scalable fonts: 4 typefaces

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Bar-code fonts: 8 typefaces

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Character tables

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Standard version: 11 tables

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NLSP version: 30 tables

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Control codes

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ESC/P2

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IBM 2391 Plus Emulation

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Input buffer

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128 K byte

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Interface

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Bi-directional parallel interface (IEEE-1284 nibble mode supported)

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Serial interface (EIA-232D)

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Type-B interface level 2 (Optional)

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Reliability

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Total print volume: 9 million lines

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Printhead life: 200 million strokes

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Ribbon life: 6 million characters

Rev. A

1-1

DLQ-3000+

Paper Thickness Adjust Lever

Printer Cover

Ribbon Cartridge

Rear Paper Guide

Power Switch

Left Guide Edge

Left Guide Edge Lock

Front Paper Guide

Printhead

Right Guide Edge Lock

Control Panel

Knob

Paper Bail

Right Guide Edge

Paper Support

Release Lever

1-2

Parallel Interface

Serial Interface

Tractor Unit

Figure 1-1. Exterior View of DLQ 3000+

Rev. A

1.2 Consumables and Options

Table 1-1. Accessories and Options

Part Number Description

Consumable Supplies

S015066 S015067 Ribbon cartridge (Color)

Optional Equipment

C806830 Cut sheet feeder C82307∗ / C82308∗ C82310∗ / C82311∗ C82312∗ C82313∗ C82314∗ C82315∗ C82331∗ C82345* IEEE-1284 parallel I/F card C82346 Multi Protocol Ethernet I/F card

Accessory Equipment

Ribbon cartridge (Black)

32KB intelligent serial I/F card 32KB intelligent parallel I/F card Localtalk™ card 32KB IEEE-488 I/F card Coax I/F card Twin-Ax I/F card Ethernet I/F card

Power supply cable

Product Description

Note:

1. Asterisk at the end of the part numbers replaces the last digit of the part number,

which varies by the market.

2. Can be an accessory item according as market.

Rev. A

DLQ-3000+

1.3 Hardware Specification

1.3.1 printing Specification

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Print method Impact-dot matrix

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Print pin arrangement 24-pin rhombus (See Figure 1-2.)

0.86 m m =1/30"+1/2160"

6x0.023m m (=1-1080")

#1 #2

3.25m m (=1/180"x23)

11x0.28m m (=1/90")

#23

6x0.023m m (=1-1080")

#24

0.14 m m (=1/180")

11x0.28m m (=1/90")

Figure 1-2. Pin Arrangement

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Printing direction Bi-directional printing with logic seeking

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Resolution See Table 1-2.

Table 1-2 .Printing Resolution

Printing Mode Horizontal Density Vertical Density Adjacent Dot Print

High speed draft 90 dpi 180 dpi No Draft 120 dpi 180 dpi No Draft condensed 240 dpi 180 dpi No LQ 360 dpi 180 dpi No 8-pin bit image 60, 80, 90 or 120 dpi 60 dpi Yes

120 or 240 dpi 60 dpi No

24-pin bit image 60, 90, 120 or 180

180 dpi Yes

dpi 360 dpi 180 dpi No

Raster graphics 180 or 360 dpi 180 or 360 * dpi Yes

Note:When a color ribbon is installed, the printer can not print vertical 360 dpi graphics. In

that case, the printer changes vertical density to 180 dpi.

1-4

Rev. A

Product Description

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Printing speed See Table 1-3.

Table 1-3. Printing Speed

Printing Mode Character Size Maximum Printing Speed

Mode 0 Mode 1 Mode 2 Mode 3 Mode 4

High speed draft 10 cpi 444 444 160 160 240

10 cpi 360 333 240 120 180

Draft 12 cpi 432 400 288 144 216

15 cpi 540 500 360 180 270

Craft condensed 17 cpi 309 286 206 103 154

20 cpi 360 333 240 120 180 10 cpi 120 111 80 40 60

LQ 12 cpi 144 133 96 48 72

15 cpi 180 167 120 60 90

LQ condensed 17 cpi 206 190 137 68 103

20 cpi 240 222 160 80 120

Raster (360 dpi) 10 cpi 20 20 20 20 20

Printing Speed Mode Selection

This printer is designed to control the printing speed according to the power supply voltage and printhead temperature. When the power supply voltage drops to the limit, the printer stops printing, then resumes the job at a slower speed to print the remaining data for the line. When the printhead temperature rises to the limit, the printer stops printing. Then it resumes printing at a slower speed if the printhead temperature recovers to the specified level. The printing speed mode is determined according to the flowchart shown in Page 1-6.

Rev. A

DLQ-3000+

START

Is th e

head tem perature

1 2 C ?

P-Down* ?

Is p rin t d u ty

5 0 % ?

YES

M ode 4

B lack color print?

M ode 2

B lack color print?

YES

Is paper

thickness

0.19 m m ?

M ode 2M ode 2

YES

C opy 2 m ode?

Is paper

thickness

0.19 m m ?

YES

M ode 2M ode 2

YES

M ode 3

M ode 1

YES

Is the head

tem perature

3 8 C ?

YES

B lack color print?

YES

M ode 2

B lack color print?

Is paper

thickness

0.19 m m ?

M ode 0

YES

M ode 0

YES

M ode 2

C opy 2 m ode?

Is paper

thickness

0.19 m m ?

M ode 0

YES

M ode 1

M ode 0

YES

M ode 3

M ode 2M ode 2

P-D ow n : M eans that the line is the reprinted line after the pow er supply voltage drops. It is to prevent the printhead and the printer m echanism from being driven under the im proper pow er supply voltage.

Figure 1-3. Printing Speed Selection Mode

1-6

Rev. A

1.3.2 Character Specifications and Control Codes

1.3.2.1 Coded Character Sets

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ASCII international and Legal international character sets *

USA France Germany UK Denmark 1 Sweden Italy Spain 1 Japan Norway Denmark 2 Spain 2 Latin America Korea Legal

Note: The codes for the international and legal characters are as follows:

23H, 24H, 40H, 5BH, 5CH, 5DH, 5EH, 60H, 7BH, 7CH, 7DH, 7EH

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Standard version (11 character tables)

Italic table PC437 (US, Standard Europe) PC850 (Multilingual) PC860 (Portuguese) PC861 (Icelandic) PC863 (Canadian French) PC865 (Nordic) Abicomp BRASCII Roman 8 ISO Latin 1

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NLSP version (30 character tables)

Italic table PC 437 (US, Standard Europe) PC 850 (Multilingual) PC 437 (Greek) PC 852 (East Europe) PC 853 (Turkish) PC 855 (Cyrillic)PC 860 PC 857 ( Turkish) PC 866 (Russian) PC 869 (Greek) MAZOAWIA (Poland) Code MJK (CSFR) ISO 8559-7 (Latin, Greek) ISO Latin 1T (Turkish) Bulgaria (Bulgaria) PC 864 (Arabic) Estonia PC 774 (LST 1283:1933) ISO 8859-2 PC 866 LAT. (Latvian) PC 860 (Portuguese) PC 861 (Icelandic) PC 865 (Nordic) PCAPTEC (Arabic) PC 708 (Arabic) PC 720 (Arabic) PCAR864 (Arabic) Hebrew7 * Hebrew8 *

PC862(Hebrew) *

Note 1: Theses character tables are not selected in the SelecType mode.

Product Description

1.3.2.2 Type Faces

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Bitmap fonts (10 type faces)

Roman Sans Serif Courier Prestige Script Script C OCR B Orator Orator S Draft

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Scalable fonts (4 type faces)

Roman Sans Serif Roman T Sans Serif H

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Bar-code fonts (8 type faces)

EAN 13 EAN-8 Interleaved 2 of 5 UPC-A UPC-E Code 39 Code 128 POSTNET

1.3.2.3 Rendition

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ASCII

Double-width Double-height Condensed Bolded Double-strike Italics Super/subscript Outlined Shadowed Underlined (Single, Double, Single-broken, Double-broken line) Strike-through (Single, Double, Single-broken, Double-broken line) Over-scored (Single, Double, Single-broken, Double-broken line)

Rev. A

DLQ-3000+

1.3.2.4 Combination of character tables and typefaces

Table 1-4. Character Tables and Type Faces

Character Tables Bitmap Fonts Scalable Fonts

Standard version

NLSP version

Italic table

PC 437 (US Stand ard Europe) PC 850 (Multilingual) PC 860 (Portuguese)) PC 861 (Icelandic) PC 863 (Canadian-French) PC 865 (Nordic) BRASCII

Abicomp Roman 8 ISO Latin 1

Italic table

PC 437 (US Stand ard Europe) PC 850 (Multilingual) PC 860 (Portuguese) PC861 (Icelandic) PC 865 (Nordic)

PC 864 (Arabic) EPSON Draft PC 437 (Greek)

PC 852 (East Europe) PC 853 (Turkish) PC 855 (Cyrillic) PC 857 (Turkish) PC 866 (Russian) PC 869 (Greek) MAZOWIA ( P oland) Code MJK (CSFR) ISO 8859-7 (Lat in/Greek) ISO Latin 1T (Turkish) Bulgaria ( B ulgaria) Estonia PC 774 (LST 1283:1993) ISO 8859-2

PC 866 LAT. (Latvian) PCAPTEC (Arabic) PC 708 (Arabic) PC 720 (Arabic) PCAR864 (Arabic)

EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script EPSON OCR-B EPSON Orator EPSON Orator-S Epson Script C

EPSON Roman EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script

EPSON Draft (Arabic) EPSON Naskh (Roman) EPSON Kufi (Sans Serif)

EPSON Roman EPSON Sans Serif EPSON Roman T EPSON Sans Serif H

(Not supported) (Not supported)

(Not supported)

Hebrew7 * Hebrew8 * PC862(Hebrew) *

2 2

EPSON Draft (Hebrew) EPSON Miriam (Roman) EPSON David

(Not supported)

(Courier)

Note:

1: ESC R command is effective on the character tables with bold weight. 2: These character tables are not selected in the SelecType mode.

1-8

Rev. A

Product Description

1.3.2.5 Memory Size

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Input buffer 128 K byte or 1k byte

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Download memory Approximately 10 K byte

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CG ROM NLSP Version: 8 M bit, Standard Version: 4 M bit

1.3.2.6 Character Size

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Character size

• Bit map font 10.5 point

• Scalable font 10.5 point

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Character matrixes See Table 1-5.

Table 1-5. Character Matrixes

Character Horizontal Dots Vertical Dots

Draft 10 cpi 12 24 Draft 12 cpi 10 24 Draft 15 cpi 8 16 LQ 10 cpi 36 24 LQ 12 cpi 30 24 LQ 15 cpi 24 16

LQ proportional 48 (maximum) 24

Notes:

1. The character matrixes for high speed draft 10 cpi characters are made from the draft 12 cpi matrixes.

2. The character matrixes for 15 cpi character are also used for superscript and subscript characters.

1.3.2.7 Control Codes

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ESC/P2

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IBM 2391 Plus Emulation

Rev. A

DLQ-3000+

1.3.3 Paper Feed Specification

1.3.3.1 Friction Feed (Cut sheet)

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Paper Path

• Single sheet, envelopes Front and rear insertion (Manual/CSF insertion)

• Multi-part form Rear entry (Manual/CSF insertion)

Notes:

1. Set the release lever to “FRICTION”.

2. Do not load continuous paper (including folding paper).

3. Set the longer side of the envelope horizontally.

4. When setting No.6 envelope, align the left sheet edge guide with the marked position.

1.3.3.2 Tractor Feed (Continuous paper)

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Paper Path

• Rear entry push tractor feed with paper parking function

Notes:

1. Set the release lever to “TRACTOR”.

2. Do not perform reverse feed for more than 1/6 inch.

3. Set the left and right sheet edge guides to the right and left ends of the front paper guide, respectively.

1.3.3.3 Paper Feed Speed and Accuracy

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Minimum feed length 1/360 inch (1/6, 1/8 or programmable with the

increment of 1/360 inch)

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Feed speed

• 1/6 inch line feed 42 ms

• Continuous feed 6.0 IPS (inch/second)

0.152 MPS (m/second)

1-10

Rev. A

1.3.4 Paper Specification

Cut sheet (Single sheet)

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Table 1-6. Cut sheet Specification : Single Sheet

Product Description

Minimum Maximum

Width

Length

Thickness

Weight

Manual insertion

CSF

Manual insertion

CSF

3.6 inch 92 mm

3.9 inch 100 mm

3.5 inch 92 mm

3.6 inch 92 mm

0.0025 inch

0.065 mm 52 g/m²

14 lb.

16.5 inch 420 mm

14.3 inch 364 mm

0.0047 inch

0.12 mm 105 g/m²

27 lb.

Quality Plain paper, Reclaimed paper

Notes:

1. Reclaimed paper can be used under condition of room temperatures only.

2. Ensure that the paper is not curled, folded or crumpled.

Cut sheet (Multi-part form)

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Table 1-7. Cut sheet Specification : Multi-part Form

Minimum Maximum

Width

Length

Manual insertion

CSF

Manual insertion

CSF

3.6 inch 92 mm

3.9 inch 100 mm

3.5 inch 92 mm

3.6 inch 92 mm

16.5 inch 420 mm

16.5 inch 420 mm *

14.3 inch 364 mm *

Copies 1 original and 6 copies Thickness Weight

(I sheet of a multi-part form)

0.0047 inch

0.12 mm 40 g/m²

11 lb.

0.021 inch

0.53 mm 58 g/m²

15 lb.

Quality Carbon-less multi-part paper Jointing Line glue (top, right and left side)

Notes:

1. Ensure that the paper is not curled, folded or crumpled.

2. The maximum length for the carbon-less multi-part paper is 297 mm with the left or

right side of the form line-glued.

3. CSF does not feed paper which is glued by the right or left side.

Rev. A

1-11

DLQ-3000+

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Envelopes

Table 1-8. Envelope Specification

Minimum Maximum

Envelopes (No.6) Width 6.5 inch/165 mm

Length 3.6 inch/92 mm

Envelopes (No.10) Width 9.5 inch/241 mm

Length 4.1 inch/105 mm

Thickness

Weight

Quality

0.0063 inch

0.16 mm 45 g/m²

12 lb. /m²

Bond paper, Plain paper Airmail paper without glue at a flap

0.021 inch

0.52 mm 91 g/m²

24 lb./m²

Notes:

1. Fold the flap of the envelope inside before loading at CSF or manual insertion.

2. Difference in thickness within the same printable area must be 0.0098 inch or less.

1-12

Rev. A



Continuous paper

Table 1-9. Continuous Paper Specification : Single Paper/Multi-Part Form

Product Description

Minimum Maximum

Length (1 page)

Total Thickness

Weight

Quality

Jointing *

Width 4.0 inch

101.6 mm

4.0 inch

101.6 mm

3.5 inch 92 mm

Copies 1 original and 6 copies

Single sheet 1 sheet of

multi-part form Cut sheet 1 sheet of

multi-part form

0.0025 inch

0.065 mm

0.0047 inch

0.12 mm

52.3 g/m² 14 lb.

40 g/m² 11 lb.

Plain paper, Reclaimed paper Carbon-less multi-part form

Must be one of the followings:

- Point glue on the both sides

- Tape staple on the both sides

- Point glue on one side and tape staple on the other side

Note: Do not use the paper which is glued by

the side or stapled.

16 inch

406.4 mm

22.0 inch

558.8 mm

16.4 inch 420 mm *

0.047 inch

0.12 mm

0.021 inch

0.53 mm 105 g/m²

27 lb. 58 g/m²

15 lb.

Rev. A

1-1

DLQ-3000+



Labels

Table 1-10. Label Specification

Minimum Maximum

Label size See Figure 1-4. Base sheet width 4.0 inch 16.0 inch

101.6 mm 406.4 mm Base sheet length 4.0 inch 22.0 inch (1 page) 101.6 mm 559 mm

Base sheet thickness

Total thickness

0.0028 inch

0.07 mm

0.0063 inch

0.16 mm

0.0035 inch

0.09 mm

0.0075 inch

0.19 mm Label weight 64 g/m²/17 lb. Quality Plain paper or equivalent

The base sheet must be continuous paper.

Notes:

1. Use labels in the condition of the room temperature only.

2. Labels backed with the continuous base sheet can be used only.

3. When the label sheet whose base sheet is exposed around the labels, adjust the platen gap manually to the portion covered with the label using PG adjust lever.

15/16 inch (23.8mm or more)

2-1/2 inch (63.5mm or more)

R 0.1inch (R 2.5m m or m ore)

Figure 1-4. Label Size

1-14

Rev. A

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Pre-print paper

Table 1-11. Pre-Print Paper Specification

Width 4.0 inch 16.0 inch

Length 4.0 inch 22.0 inch (1 page) 101.6 mm 559 mm

Total thickness

Quality



Continuous forms with labels

Table 1-12. Continuous Forms with Labels Specification

Product Description

Minimum Maximum

101.6 mm 406.4 mm

0.0025 inch

0.065 mm

The paper printed with the color which has the reflective rate of less than 60 %, such as black.

Minimum Maximum

0.047 inch

0.12 mm

Base sheet width 4.0 inch 16.0 inch

101.6 mm 406.4 mm Base sheet length 4.0 inch 22.0 inch (1 page) 101.6 mm 559 mm

Total thickness

Quality

– –

Plain paper or equivalent Airmail paper without glue at a flap

0.021 inch

0.53 mm

Note:

When using the continuous forms with labels, the label position must be registered properly. It can be performed through the utility “Label Position Registering Utility”.

Rev. A

1-1

DLQ-3000+



Overlapping multi-part forms

Table 1-13. Overlapping Multi-Part Form Specification

Base sheet width 4.0 inch 16.0 inch

Base sheet length 4.0 inch 22.0 inch (1 page) 101.6 mm 559 mm

Total thickness

Jointing

Minimum Maximum

101.6 mm 406.4 mm

– –

0.026 inch

0.65 mm

Multi-part forms :Point glue Joint for the base sheet and multi-part form

:Point glue

Total Thickness

Glue

Maximum 13.3 mm

Maximum 3.3 mm

Maximum 17 mm

Base Sheet

Figure 1-5. Overlapping multi-part Form Specification

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Overlapping multi-part forms with labels

Table 1-14. Overlapping Multi-Part Form with Labels Specification

Minimum Maximum

Base sheet width 4.0 inch 16.0 inch

101.6 mm 406.4 mm Base sheet length 4.0 inch 22.0 inch (1 page) 101.6 mm 559 mm

Total thickness

– –

0.026 inch

0.65 mm

Multi-part forms :Point glue

Jointing

Joint for the base sheet and multi-part form

:Point glue

Note: When using overlapping multi-part forms with labels, the label position must be

registered properly. It can be performed through the utility “Label Position Registering Utility”.

1-16

Total Thickness

Glue

Maximum 13.3 mm

Maximum 17 mm

Label

Maximum 3.3 mm

Maximum 0.53 mm

Base Sheet

Figure 1-6. Overlapping multi-part Form with Labels Specification

Rev. A

1.3.5 Printable Area

This section describes printable area for various types of paper.

Cut sheet



Product Description

Printable A rea

Figure 1-7. Printable Area for Cut Sheet

Table 1-15. Printing Area for Cut sheet

Single cut sheet Multi-part cut sheet

Paper width (PW) Refer to Section 1.3.4. Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Refer to Section 1.3.4. Left margin (LM) 3 mm (0.118”) or more 3 mm (0.118”) or more

[A3 landscape] 31 mm (1.22”) or more

Right margin (RM) 3 mm (0.118”) or more 3 mm (0.118”) or more

[A3 landscape] 20 mm (0.78”) or more

[A3 landscape]

20 mm (0.78”) or more Top margin (TM) 0 mm (0”) or more 0 mm (0”) or more Bottom margin (BM) 0 mm (0”) or more 0 mm (0”) or more Width of printing area

Maximum 346 mm (13.62”)

Maximum 346 mm

(13.62”)

(WPA)

Rev. A

1-1

DLQ-3000+



Continuous paper

Perforation

Printable A rea

Perforation

Figure 1-8. Printable Area for Continuous Paper

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (PM) 9 mm (0.354”) or more Right margin (LM) 9 mm (0.354”) or more Top margin (TM) 4.2 mm (0.165”) or more Bottom margin (BM) 4.2 mm (0.165”) or more

Notes:

1. In the top 75 mm are, the paper feeding pitch may be irregular.

2. Forms-override printing is available for 2 lines after the paper end is detected.(Paper feeding pitch is not guaranteed.) The end of the printable area is 4.2 m or more apart from the bottom edge of the paper.

3. When the page width is 16 inches, note the followings:

• LM is 18 mm or more with the left tractor set at the farthest side toward the 136th column.

• RM is 18 mm or more with the right tractor set at the farthest side toward the 1st column.

1-18

Rev. A



Product Description

Labels

TO L

LO L

Printable Area

BOL

ROL

P r in tin g p ro h ib ite d

Figure 1-9. Printable Area for Labels

Table 1-16. Printable Area for Labels

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (LM) 12 mm (0.472”) or more Top margin (TM) 1.2 mm (0.0472) or more Left margin on label (LOL) 3 mm (0.118”) or more Right margin on label (ROL) 3 mm (0.118”) or more Top margin on label (TOL) 3 mm (0.118”) or more Bottom margin on label (BOL) 3 mm (0.118”) or more

Notes:

1. Do not feed paper backward.

2. Use only the specified paper path for continuous paper.

3. The paper feeding pitch in the top 75 mm (2.9”) may be irregular.

Rev. A

1-1

DLQ-3000+



Envelops

Print Direction

(M anual insertion from the rear/C S F)

Printable Area

Print Direction

(M anual insertion form the front)

Figure 1-10. Printable Area for Envelopes

Table 1-17. Printable Area for Envelops

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (LM) 3 mm(0.118”) or more Right margin (RM) 3 mm(0.118”) or more

Top margin (TM)

0 mm (0”) or more *

Bottom margin (BM) 0 mm (0”) or more

Note 1: At CSF insertion:

4.2 mm (0.16”) or more

1-20

Rev. A



Overlapping multi-part forms

Product Description

LM B

Printable A rea

: Printable A rea

RMB

Perforation

Figure 1-11. Printing Area for Overlapping Multi-part Forms

Table 1-18. Printing Area for Overlapping Multi-part Forms

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (LM) 19 mm (0.748”) or more Right margin (RM) 19 mm (0.748”) or more Top margin (TM) 21.2 mm (0.835”) or more Bottom margin (BM) 4.2 mm (0.165”) or more Left margin from the multi-part form to

13 mm (0.512”) ± 3 mm (0.118”)

the base sheet (LMB) Right margin from the multi-part form

13 mm (0.512”) ± 3 mm (0.118”)

to the base sheet (RMB)

Notes:

1. Do not feed paper backward.

2. Use only the specified paper path for continuous paper.

3. The paper feeding pitch in the top 75 mm (2.9”) may be irregular.

4. Forms-override printing is available for 2 lines after the paper end is detected. The end of the printable area is 4.2 mm or more apart from the bottom edge of the paper.

Rev. A

1-21

DLQ-3000+



Continuous forms with labels

N on-printable Area

Label

LFL

RFL

TFL

BFL

Printable Area

LO L

: P rintable Area

Figure 1-12. Printable Area for Continuous Forms with Labels

Table 1-19. Printable Area for Continuous Forms with Labels

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (LM) 9 mm (0.354”) or more Right margin (RM) 9 mm (0.354”) or more Top margin (TM) 4.2 mm (0.165”) or more Bottom margin (BM) 4.2 mm (0.165”) or more Left margin for label (LFL) 45 mm (1.77) or more Right margin from label (RFL) 45 mm (1.77) or more Top margin from label (TFL) 25 mm(0.984”) or more Bottom margin from label (BFL) 25 mm(0.984”) or more Left margin on label (LOL) 3 mm (0.118”) or more Right margin on label (ROL) 3 mm (0.118”) or more Top margin on label (TOL) 3 mm (0.118”) or more Bottom margin on label (BOL) 3 mm (0.118”) or more

Notes:

1. Do not feed paper backward.

2. Use only the specified paper path for the continuous paper.

3. The paper feeding pitch in the top 75 mm (2.9”) may be irregular.

4. Forms-override printing is available for 20 lines after the paper end is detected. (Paper feeding pitch is not guaranteed.) The end of the printable are is 4.2 mm or more apart from the bottom edge of the paper.

TO L

BOL

ROL

1-22

Rev. A



Overlapping multi-part forms with labels

Product Description

LM B

Printable A rea

LFL

TFL

Label

BFL

RFL

RMB

Perforation

LO L

Figure 1-13. Printable Area for Overlapping Multi-Part Forms with Labels

Table 1-20. Printable Area for Overlapping Multi-Part Forms

Continuous paper

Paper width (PW) Refer to Section 1.3.4. Paper length (PL) Refer to Section 1.3.4. Left margin (LM) 19 mm (0.748”) or more Right margin (RM) 19 mm (0.748”) or more Left margin from the multi-part forms

13 mm (0.552”) ± 3 mm (0.118”)

to the base sheet (LMB) Right margin from the multi-part forms

13 mm (0.552”) ± 3 mm (0.118”)

to the base sheet (RMB) Top margin (TM) 21.2 mm (0.835”) or more Bottom margin (BM) 4.2 mm (0.165”) or more Non-printable area (NA) 25.4 mm (1.0”) or more Left margin from label (LFL) 45 mm (1.77”) or more Right margin from label (RFL) 45 mm (1.77”) or more Top margin from label (TFL) 25 mm(0.984”) or more Bottom margin from label (BFL) 25 mm(0.984”) or more Left margin on label (LOL) 3 mm (0.118”) or more Right margin on label (ROL) 3 mm (0.118”) or more Top margin on label (TOL) 3 mm (0.118”) or more Bottom margin on label (BOL) 3 mm (0.118”) or more

Notes:

1. Do not feed paper backward.

2. The paper feeding pitch in the top 75 mm (2.9”) may be irregular.

ROL

TO L

Printable A rea

BOL

Label

: P rintable A rea

Rev. A

1-2

DLQ-3000+

3. Forms-override printing is available for 20 lines after the paper end is detected. (Paper feeding pitch is not guaranteed.) The end of the printable are is 4.2 mm or more apart from the bottom edge of the paper

1.3.6 Paper Thickness Detection

This printer is equipped with the automatic paper thickness adjust function. When the paper thickness lever is set to “Auto position”, the printer automatically measures thickness of each paper loaded to set the proper PG (platen Gap) the detected thickness. PG is also adjusted manually. See Table 1-21 which shows the adjust lever position and corresponding paper thickness and platen gap.

Table 1-21. PG Adjust Lever

Adjust lever Paper thickness (inch) Paper thickness (mm) PG

position Maximum Minimum Maximum Minimum Inch mm

-1 0.0024 0.0043 0.06 0.11 0.0138 0.35 0 0.0024 0.0043 0.06 0.11 0.0154 0.39 1 0.0043 0.0059 0.11 0.15 0.0169 0.43 2 0.0059 0.0075 0.15 0.19 0.0181 0.46 3 0.0075 0.0098 0.19 0.25 0.0197 0.50 4 0.0098 0.0122 0.25 0.30 0.0217 0.55 5 0.0122 0.0146 0.30 0.36 0.0240 0.61 6 0.0146 0.0165 0.36 0.42 0.0264 0.67 7 0.0165 0.0185 0.42 0.46 0.0280 0.71 8 0.0185 0.0201 0.46 0.49 0.0291 0.74 9 0.0201 0.0217 0.49 0.53 0.0307 0.78

Notes: Switching to “Dark” in the copy mode is effective under the following conditions:



In the “Auto” mode: Paper thickness is 0.2 mm or more.



Manual adjustment: The lever is set to one of the positions in the range from 3 to 9.

1-24

Rev. A

Product Description

1.3.7 Ribbon Cartridge

1.3.7.1 Monochrome ribbon cartridge



Color Black



Ribbon fabric Nylon 66



Ribbon dimension 25.5 mm (W) X 17 mm (L) X 1.5 mm (D)



ribbon thickness 0.128 mm ± 0.007 mm



Cartridge dimension 153 mm/6.0” (W) X 33 mm/1.3” (H) X 105 mm/4.1” (D)



Ribbon life * 6 million characters



Ribbon replacement Whole cartridge



Item No. S015066

∗ At 10 cpi printing in the LQ mode. (48 dots per character)

1.3.7.2 Color ribbon cartridge



Color Black Magenta, Cyan, Yellow



Ribbon fabric Nylon 66



Ribbon dimension 25.5 mm (W) X 17 mm (L) X 1.5 mm (D)



ribbon thickness 0.128 mm ± 0.007 mm



Cartridge dimension 153 mm/6.0” (W) X 33 mm/1.3” (H) X 105 mm/4.1” (D)



Ribbon life * Black: 1.5 million characters

Magenta 1.1 million characters Cyan 1.1 million characters Yellow 0.8 million characters



Ribbon replacement Whole cartridge



Item No. S015067

∗ At 10 cpi printing in the LQ mode. (48 dots per character)

Rev. A

1-2

DLQ-3000+

1.3.8 Input Data Buffer



Approximately 128 K byte/1K byte

1.3.9 Electric Specifications

120 V version



Rated voltage AC 120 V



Input voltage range AC 103.5 to 132 V



Rated frequency renege 50 to 60 Hz



Input frequency range 49.5 to 60.5 Hz



Rated current 7 A (maximum)



Power consumption Approximately 60 W (ISO/IEC 10561 Letter pattern)



Insulation resistance 10 M ohms minute



Dielectric strength AC 1,000 V rms. for 1 minute or

220 - 240V version



Rated voltage AC 220 to 240 V



Input voltage range AC 198 to 264 V



Rated frequency renege 50 to 60 Hz



Input frequency range 49.5 to 60.5 Hz



Rated current 0.7 A (maximum)



Power consumption Approximately 60 W (ISO/IEC 10561 Letter pattern)



Insulation resistance 10 M ohms min.



Dielectric strength AC 1,500 Vrms. For 1 minute

Energy Star program compliant (Between AC line and chassis, 500 VDC) AC 1,200 V rms. for 1 second

(Between AC line and chassis)

Energy Star program compliant (Between AC line and chassis, DC 500 V) (Between AC line and chassis)

1.3.10 Safety Approvals

120 V version



Safety standards UL1950 with D3



EMI FCC part15 subpart B class B

220 - 240 V version



Safety standards EN 60950 (TÜV, NEMKO)



EMI EN 55022 (CISPR Pub.22) class B

1.3.11 CE Marking

220 - 240 V version



Low Voltage Directive 73/23/EEC EN60950



EMC Directive 89/336/EEC EN55022 class B

CSA22.2 No. 950 with D3 CSA C108.8 class B

AS/NZS 3548 class B

EN61000-3-2 EN61000-3-3 EN50082-1

IEC801-2 IEC801-3 IEC801-4

1-26

Rev. A

Product Description

1.3.12 Acoustic Noise



Noise level Approximately 55 dB (A) (According to ISO 7779)

1.3.13 Reliability



Total print volume 9 million lines (excluding printhead)



Printhead life 200 million strokes/pin (Monochrome ribbon)

100 million strokes/pin (Color ribbon)



Ribbon life

• Fabric black ribbon life 6 million characters*

• Fabric color ribbon Black : 1.5 million characters*

Magenta: 1.1 million characters* Cyan: 1.1 million characters*

Yellow: 0.8 million characters* * 1 character is formed with 48 dots. At 10-cpi printing (LQ mode)

1.3.14 Environmental Conditions

Table 1-22. Environmental Condition

Operating Non-operating

5 to 35 °C -30 to 65 °C

Temperature 15 to 35 °C *

15 to 25 °C * 10 to 80 % 5 to 85 %

Humidity *

10 to 80 % * 20 to 60 % *

Resistance to shock 0.25G, 10 to 55 Hz

(Directions: X,Y and Z)

Resistance to Vibration 1G, Within 1 ms

(Directions: X,Y and Z)

Notes:

1. When the optional film ribbon is used.

2. When the envelopes or labels are printed.

3. Without condensation

1 2

-20 to 40 °C *



5 to 85 % *



0.50G, 10 to 55 Hz (Directions: X,Y and Z)

2G, Within 1 ms (Directions: X,Y and Z)

Rev. A

1-2

DLQ-3000+

1.4 Interfaces

The EPSON DLQ-3000+ is equipped with the parallel and Mac serial interfaces and a card slot for an optional Type-B interface. This section provides information on each interface.

1.4.1 Parallel Interface

Forward Channel



Transmission mode 8 bit parallel, IEEE-1284 compatibility mode



Synchronization By /STROBE pulse



Handshaking By /BUSY and /ACKNLG signal



Signal level TTL compatible (IEEE-1284 level 1 device)



Adaptable connector 57-30360 (Amphenol) or equivalent

Table 1-23. Signal level of TTL Compatible (IEEE-1284 level 1 device)

Parameter Minimum Maximum Condition

VOH* - 5.5 V VOL* -0.5 V IOH* - 0.32 mA VOH = 2.4 V IOL* - 12 mA VOL = 0.4 V CO - 50 pf VIH - 2.0 V VIL 0.8 V IIH - 0.32 mA VIH = 2.0 V IIL - 12 mA VIL = 0.8 V CI - 50 pf

∗ A LOW logic level on the Logic H signal is as follows:

2.0 V or less when the printer is powered off.

3.0 V or more when the printer is powered on. The receiver provides an impedance equivalent to 7.5 K ohms to ground.

The BUSY signal is HIGH in the following cases:



During data entry



When the input data buffer is full.



While /INIT signal is at low level



During hardware initialization



During the signal /ERROR or PE is LOW or HIGH, respectively.



During the self-test printing mode.



During the default setting mode.



During the adjustment mode.

The /ERROR signal is LOW when one of the following errors has occurred:



Printer hardware error (fatal error)



Paper-out error

The PE signal is HIGH when the following error has occurred:



Paper-out error

1-28

Rev. A

Table 1-24. Data Transmission Timing

Parameter Minimum Maximum

Product Description

tsetup 500 ns thold 500 ns tstb 500 ns tready 0 tbusy treply

 

tack 500 ns tnbusy 0 tnext 0 tt-out * tt-in *

 

Note:

1. Rise and fall time for output signals

2. Rise and fall time for input signal

DATA (n)

DATA

thold

   

500 ns

10 µs

 

120 ns 200 ns

DATA (n+1)

STOR BE

ts tb

tsetup

BUSY

tready

tbusy

ACKNLG

tre p ly

ta c k

tnbusy

Figure 1-14. Data Transmission Timing Chart

tnext

Rev. A

1-2

DLQ-3000+

16,33,19-30

Table 1-25 shows the connector pin assignment and signals for forward channel of the parallel interface.

Table 1-25. Connector Pin Assignments and Signals (Forward Channel)

Pin No. Signal Name

/STROBE

Return

GND Pin

19 I

I/O Description

The strobe pulse. Read-in of data is performed at the falling edge of this pulse.

The data 0 to data 7 signals

2-9

DATA 1- 8

20-27 I

represent data bits 0 to 7, respectively. Each signal is at a HIGH level when data is logical 1 and a LOW level when data is logical 0.

This signal is a negative pulse

/ACKNLG

28 O

indicating that the printer can again accept data.

13 14

BUSY

SLCT /AFXT

29 O

28 O

28 O 30 I Not used.

When this signal is at a HIGH level, the printer is not ready to accept data.

When this signal is at a HIGH level, the paper empty status is detected.

Always at a HIGH level when the printer is powered on.

The falling edge of a negative pulse

/INIT

30 I

or a LOW signal on this line causes the printer to initialize. Minimum 50 us

pulse is necessary. 32 36 18 35

/ERROR /SLIN Logic H +5V

29 O 30 I Not used.

 

When the printer detects an error, this

signal goes LOW.

Pulled up to +5V via 3.9 K-ohm

resistor.

O Pulled up to +5V via 3.3 K-ohm

resistor.

15,34

Note)

Chassis GND GND

 



Chassis ground.

nal ground.

Not connected.

1. */* at the beginning of a signal means active low.

2. The I/O column indicates the direction of the signal as viewed form the printer.

1-30

Rev. A

Product Description

Reverse Channel



Transmission mode IEEE-1284 nibble mode



Adaptable connector Same as for the forward channel



Synchronization Refer to the IEEE-1284 specification



Handshaking Refer to the IEEE-1284 specification



Data transmission timing Ref e r to the IEEE-1284 specification



Signal level IEEE-1284 level 1 device

See the forward channel.

Table 1-26 shows the connector pin assignment and signals for reverse channel of the parallel interface.

Table 1-26. Connector Pin Assignment and Signals (Reverse Channel)

Pin No. Signal Name

1 HostClk 19 I Clock signal from the host computer.

2-9 DATA 1-8 20-27 I

10 PtrClk 28 O Clock signal from the printer 11

13 Xflag/Data bit

14 HostBusy 30 I Busy signal from the host computer 31 /INIT 30 I Not used

32 36 1284-Active 30 I 1284 active signal.

18 Logic-H

35 +5V 17 Chassis GND

16,33,

19-30 15,34 NC

Note)

PtrBusy / Data bit 3,7 AckDatareq /

Data Bit 2,6

1,5

/Data Avail / Data bit 0,4

GND

Return

GND Pin

29 O

28 O

29 O



   

I/O Description

These signals represent parallel data

on bits 2 to 9. Each signal is High

when the data is logical 1 and LOW

when the data is logical 0.

Busy signal from the printer.

Data bit 3 or 7 in reverse channel.

Acknowledge request signal.

Data bit 2 or 6 in reverse channel.

X flag signal.

Data bit 1 or 5 in reverse channel.

Data available signal.

Data bit 0 or 4 in reverse channel.

Pulled up to +5V via 3.9 K-ohm

resistor.

Pulled up to +5V via 3.3 K-ohm

resistor.

Chassis ground for the printer.

Signal ground.

Not connected.

1. */* at the beginning of a signal means active low.

2. The I/O column indicates the direction of the signal as viewed form the printer.

Rev. A

1-31

DLQ-3000+



Extensibility Request

The printer responds affirmatively when the extensibility request values are 00H or 04H, as follows:



00H Request nibble mode reverse channel transfer.



04H Request device ID using nibble mode rev channel transfer



Device ID

The printer sends following device ID string upon request:

[00H] [3DH] MFG EPSON; CMD ESCPL2, PRPXL24, BDC; MDL DLQ-3000+; CLS PRINTER;

1-32

Rev. A

Product Description

1.4.2 Serial Interface



Synchronization Asynchronous



Signal level EIA-232D

MARK (logical 1): -3 V to -25 V SPACE (logical): +3 V to +25 V



Word format Start bit: 1 bit

Data bit: 8 bit Parity bit: Odd, Even or Non Stop bit: 1 bit



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



Handshaking DTR signal and XON/XOFF

DTR = MARK, XOFF: Indicates that the printer cannot receive data. DTR = SPACE, XON: Indicates that the printer is ready to receive data.

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



Error handling Parity error is detected only.

(Overrun error and framing error are ignored.)



Connector 25-pin sub-miniature D-shell connector. (female)

Table 1-27. Connector Pin Assignment for Serial Interface

Pin No. Signal Name I/O Function Description

1 Chassis GND 2 TXD Out Transmits data 3 RXD In Receives data

4 RTS Out

7 Signal GND 11 REV Out Connected directly to the DTR signal. 20 DTR Out Data terminal ready

others NC



Chassis GND

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

Signal GND

Not used. Not connected.

Note: In and Out refers to the direction of the signal flow from the printer’s point of

view.

Rev. A

1-3

DLQ-3000+

1.4.3 Optional Interface

The EPSON DLQ-3000+ supports an optional Type-B interface (Level 2) with the following characteristics.



Reply message

Table 1-28. Reply Message

Reply message ESC/P2 IBM 2391 Plus

Main-type MT24p, PW136cl10cpi, PRG(W0xxxx)rev Product name DLQ-3000+ Emulation type ESCPL2, PRPXL24, BDC Entity type EPSONLQ2 EPSONPRPXL24



Reply for optional command

Table 1-29. Reply for Option Command

Option command No. command name Reply-A Reply-B

00h No Operation 01h Start Hard Ware Reset Accept Execute OK 02h Start Soft Ware Reset Reject 03h Send Main System Type Accept Execute OK 04h Send Name Data Reject 05h Inquire Name Data Accept Execute OK 06h Send Product Name Accept Execute OK

07h 08h Complete Buffered Data Accept Execute OK

09h Stop Procedure Reject 0Ah Return Buffered Data Reject 0Bh Send Entity Type Accept Execute OK 0Ch Send Status Accept Execute OK 0Dh Quit Procedure Reject 0Eh Inquire ASCII Message Reject 0Fh Send ASCII Message Accept Execute OK

10h - 13h (Reserved) Unknown

14h Inquire Emergency Message Accept Execute OK 15h Send Emergency Reply Accept Execute OK

16h - 1Fh (Reserved) Unknown

Send Soft Ware Emulation Type





Execute OK

 



1-34

Rev. A

Product Description



Supported Main Command and Sending Timing

Table 1-30. Supported Main Command and Sending Timing

Main Command Command name Sending Timing

01h Start Software Reset

02h Send option type 04h Send Name Data 07h 0Eh Inquire ASCII Message

14h Inquire Emergency Reply 15h Send Emergency Message



Emergency Command

Inquire Software Emulation Name



/INIT signal on the standard parallel I/F



Type-B I/F option command : 01h



Panel Reset



Cold Start



Deciding the level of type-B I/F after power on.



Type-B I/F option command : 05h



Changing software Emulation Type



Writing to DBIN register



Reply for Emergency command



Receive Emergency Command

Table 1-31. Emergency Command

Command No. Command name

0x00 Get device IC 0x01 Get all status

1.4.4 Printer language



ESC/P2



IBM 2391 Plus emulation



EPSON Remote

Rev. A

1-3

DLQ-3000+

1.4.5 Prevention Hosts from Data Transfer Time-out

Generally, hosts abandon data transfer to peripherals when a peripheral is BUSY continuously for dozens of seconds. To prevent this kind of time-out, the printer receives data very slowly, several bytes par minute, even the printer is in a busy state. This slowdown starts when the remainder of input buffer drops under several hundreds of bytes. Finally, the printer is BUSY continuously when the input buffer is full.

1.4.6 Interface Selection

The EPSON DLQ-3000+ has three types of interfaces: Parallel, Serial, and optional Type-B. Each interface can be selected manually by SelecType or automatically. Both modes are selected thorough the default setting mode.



Manual selection One of the 3 interfaces can be selected by SelecType.



Automatic selection mode (Enabled by SelecType) When the printer is powered on, the printer is initialized to the idle state scanning which interface receives data. Then the interface that receives data first is selected. When the host stops data transfer and the printer is in stand-by state for the seconds specified by SelecType, the printer is returned to the idle state. As long as the host sends data or the printer interface is busy state, the selected interface is left as it is.

Interface selection and interface state

Interface selection and the corresponding interface states are as follows:



When an interface other than parallel interface is selected, the interface goes into the BUSY state.



When an interface other than serial interface is selected, the interface sends XOFF and sets the DTR signal MARK.



When an interface other than optional interface is selected, the printer sets “OFFLINE” bit of MNSTS register to the optional interface.



When the printer is initialized and returned to the idle state:

• The parallel interface goes into ready state.

• The serial interface sends XON and sets the DTR SPACE and the printer

resets OFFLINE bit of MNSTS register to the optional interface.

Note: An interrupt signal such as /INIT signal on the parallel interface is not effective while

that interface is not selected.

Idle State

1-36

Selected State

Figure 1-15. Interface Selection

Non-selected State

Rev. A

Product Description

1.5 Operation

This section describes the function of each button on the control panel and LED printer status indicators.

1.5.1 Control Panel

The control panel for this printer consists of 10 non-lock type push buttons, 4 LED indicators and 1 LCD. See Figure 1-16.

Power

Tear O ff

Font

    

1.5.1.1 Button Operations

Paper O ut

16-character LC D

S ele cT ype

Paper select

LF/FF

Pitch

Load/E ject

-----R e s e t-----

Pause

Figure 1-16. Control Panel

LCD: 16 characters Power LEDs: Green Paper Out LED: Red Tear-off LED: Orange Pause LED: Orange



Effectiveness

Basically, all button operations are always effective except for the following cases.

• During printing, only the

• The

•

Pause functions



• Press the

Even if the

SelecType

Load/Eject

Pause

button is only effective during the printer is in the standby status.

and “

Pause Pause

button to stop printing. button again to resume printing.

button is pressed, the interface continues to receive data until the

Pause

button is effective.

” buttons are not effective during the SelecType mode.

input buffer is full and the CR moves to the ribbon changing position.



Reset function

Press the

Pause

Load/Eject

and

buttons simultaneously to initialize the printer. Refer to

Section 1.5.5.

Rev. A

1-3

DLQ-3000+



Paper feed function

Table 1-32 shows the button operations and the corresponding paper feed functions

Table 1-32. Paper Feed Functions

Operations Function

Paper loaded Paper out

Press LF/FF shortly. Tractor feed Line feed *¹ Load continuous paper Press LF/FF for a few seconds. Tractor feed Form feed *¹ Load continuous paper Press. Friction feed Eject Load a sheet *².

Load/Eject

Press ↓.

Press ↑.

Insert a sheet to the manual insertion slot. (Friction feed)

Friction feed Line feed Load a sheet *².

Friction feed Form feed Load a sheet *².

Tractor feed Paper park*¹ Load continuous paper Friction feed Micro feed (forward) — Tractor feed Micro feed (forward) *³ — Friction feed Micro feed (backward) — Tractor feed Micro feed (backward)*³ —

—

Load the inserted sheet. *².

Notes)

1. When the printer is in the tear-off state, these functions are performed after returning from the tear-off position.

2. Once a sheet is manually inserted, the printer enters manual insertion mode. While the mode is active, even if data is remaining in the buffer, the printer goes into a paper-out error state at each end of a sheet and waits for the next sheet to be inserted. CSF insertion is enabled again by loading sheets into the CSF or by initializing the printer.

3. ↓↓ and ↑↑ buttons are used as described below:

Pressing the button continuously feeds paper forward*/backward* with a increment

•

of 1/180 inch. Pressing the button continuously feeds paper forward*/backward* slowly.

•

When the printer is in the tear-off state, these buttons are used to adjust tear-off

•

position. The adjusted position is stored in the EEPROM.

* To feed forward or backward means toward the front or rear of the printer, respectively.



Tear -off function

The printer has 2 types of tear-off functions; manual tear-off and auto tear-off. The manual tea-off is performed by pressing the Tear Off button . The auto tear-off is enabled by SelecType. These functions are same as for the conventional EPSON printers.

Paper select function



Press the Paper Select button to select one of the following paper memory numbers.

• 0: All cases

• a(9): When the printer has the special paper information.

Note: The Paper Select button is only effective without any paper set.

1-38

Rev. A

Product Description

1.5.1.2 Printer Status and LCD/LED Indicator Conditions

Table 1-33 shows the printer status and When the printer is in more than one status, the printer indicates the prime status. If they have the same priority, the status occurs first is indicated. The priority in the first column means that the status with the lower numbers have higher priority.

Table 1-33. Printer Status and LCD/LED Indicator Conditions

Priority

1 Fatal error *

Printer State LCD message LED

Paper Out

Please turn off Blinks Blinks Blinks

Pause Tear-Off

2 Program reload mode Program Mode Off Off Off 3 Cover open error Cover Open On/Off *

4 Release lever operation

error *

Put Lever Back Blinks On On/Off

On On/Off

5 Paper jam error Paper Jam Blinks On On/Off

6 Paper out error *

Incomplete changing paper path error *

8 Paper size error *

Paper Out On On On/Off

Wrong Paper Path Off On On/Off

Wrong Paper Size Off On On/Off

9 Eject error Pull Paper Out Blinks On On/Off

10 Printhead is overheated. Please Wait Off Blinks On/Off

11 Entry to SelecType 1 SelecType 1 Off Off Off 11 Entry to SelecType 2 SelecType 2 Off Off Off 12 Tear-off Cut the paper Off On/Off

Data is in buffer but the printer is paused

Data in Buffer Off On Off

14 Pause Pause : #0 Off On Off 15 Bi-D adjustment Bi-d adjustment Off Off Off 15 Hex dump mode Hex dump Off Off O ff 15 Ordinary printing Printing : #0 Off Of f Off 15 Test printing Test Printing Off Off Off 15 Setting printing Setting Printing Off Off Off 16 Standby Ready : #0 Off Off O ff

Notes)

1. Fatal error occurs when the printer is under any of the following conditions:

• Power supply voltage is at an abnormal level.

• The printhead temperature is abnormal.

• Carriage does not move normally.

• Platen gap does not move normally.

• An error occurs while executing EEPROM commands or program reload mode.

• The printer control circuit does not work correctly.

2. This error occurs when the friction lever is not set to the appropriate position.

Rev. A

1-3

DLQ-3000+

3. Paper-out error occurs when the printer is under any of the following conditions:

• The printer does not load paper in spite of the attempt to load it.

• The printer finishes printing 1-page data on a sheet manually inserted.

• The end of the continuous paper has reached.

4. When the printer fails to change the paper path, this error occurs.

5. Paper size error occurs when the printer senses the condition that the currently loaded paper size does not match the selected paper size.

6. It depends on the combination of the printer status.

1.5.1.3 Printer Status and Buzzer

The printer beeps to indicate several printer error status and failure operation. Printer status and the corresponding beeper sounds are as described in Table 1-34.

Table 1-34. Printer Status and Buzzer

Printer status Beeper sound

Paper out error has occurred. – – – Paper size error has occurred. – – – Incomplete changing paper path error – – – Eject error has occurred. – – – Release lever operation error has occurred. — — — — — Paper jam error has occurred. — — — — — Fatal error has occurred. — — — — — Illegal operation in SelecType –

Notes) The symbols “–“ and “—“ represent how a beep sounds.

“–“: Sounds 100 ms with the interval of 100 ms. “—“: Sounds 500 ms with the interval of 100 ms.

1-40

Rev. A

Product Description

1.5.2 SelecType

This printer provides SelecType function to change default settings.

1.5.2.1 SelecType Phase

See Figure 1-17 which shows the SelecType phase transitions. Boxes show printer states or SelecType phases. The boxes with shadow involves button operations.

Printer State

Stand by state

SelecType

E n try to SelecType 1

SelecType

E n try to SelecType 2

SelecType

SelecType P hase

SelecType 1 p hase

FO NT

PITCH

FO NT

PITCH

SelecType 2 p hase

SelecType

in itn a liz a tio n *

D ata save phase

Font selection p hase

FO NT

Pitch selection phase

SelecType

PITCH

SelecType

Figure 1-17. SelecType Phase Transitions

Rev. A

1-41

DLQ-3000+

1.5.2.2 SelecType Operation



SelecType 1 and 2 operations

Step 1. Selecting the feature

When the SelecType 1 or 2 starts, the first feature appears on the LCD. Scroll the features by pressing the “↑” (next) or “↓” (previous) button until the desired feature appears. Then press the “→” (enter) button, and the option menu for the selected feature is displayed.

Step 2. Keeping/Changing the option

The current option marked with “*” for the menu appears. To keep the option as it is, press the “←” button (escape) to return to the feature menu. To change the option, press the “↑” (next) or “↓” (previous) button to scroll the option menu. Then press the “→” (enter) button to fix the desired option. If the “Other” is selected, another option menu appears. In this case, select the desirable option in the above mentioned way.

Step 3. Return to the previous menu

Press the “←” button (escape) to return to the previous menu. Pressing the button several times to return to the SelecType 1 or 2 entry state.

Step 4. Exit

Press the “SelecType” button to exit the SelecType phase. With this operation, new settings are automatically stored in the EEPROM and are effective until they are changed again. This process is automatically followed by the SelecType initialization phase and the printer returns to the stand-by status.

[Initializing all settings to the standard]

Select “Standard Setting” in the SelecType 2 menu. The message “Ready?” is displayed. Then perform one of the followings:



To execute the initialization: Press the “→” (enter) button. (All settings are reset to the standard and the printer returns to the feature menu.



To return to the feature menu without executing the initialization Press the “←” button (escape).

Press the “



Font and Pitch Select Operation

Step 1.

Displaying the current selection for the font/pitch When the printer enters the Font/Pitch phase, the current option marked with “*” appears.

SelecType

” button to exit the SelecType mode.

Step 2.

Step 3.

1-42

Changing the font/pitch Press the “↑” (next) or “↓” (previous) button until the desired font/pitch appears. Then press the “→” (enter) button to fix the selection. The selected font/pitch is marked with “*” as the result.

Exit Press the “SelecType” button to exit the Font/Pitch phase.

Rev. A

Product Description

1.5.2.3 SelecType Option

Table 1-35 and Table 1-36 show the options available for the SelecType 1 and SelecType 2, Font and Pitch, respectively.

Table 1-35. SelecType 1 Option

Menu Option Note

T-margin Tractor

T-Margin Manual R

T-Margin Manual L

T-Margin CSF Character Table

*8.5 mm from 4.2 mm to 8.5 mm + 25.4 mm

*8.5 mm from 0 mm to 8.5 mm + 25.4 mm

NLSP version

*PC437 PC437 Greek PC850 PC852, PC853 PC855 PC857 PC864 PC866 PC869 ISO Latin 1T Code MJK Bulgaria Estonia ISO 8859-7 MAZOWIA PC774 ISO 8859-2 PC866LAT PCAPTEC PC 708 PC720 PCAR864 PC 860 PC865 PC861 USA – KOREA

Increment : 0.14 mm (1/180”)

Standard version

*PC437 PC850 PC860 PC861 PC863 PC865 Abicomp BRASCII ISO Latin 1 Roman 8 U.S.A – Korea

Page Tractor *11 inch 12 inch

8.5 inch 70/6 inch (A4) Other (See the right column.)

Page CSF *A4 Letter

Other (See the right column.)

B-Margin Tractor Line spacing *1/6 inch 1/8 inch At 1/6 inch spacing Left-Margin

Right-Margin

Print Direction

*0.000 inch From 0 to 1 inch

*0 columns From 0 to 80 columns

*136 columns From 1 to 136 columns

*Bi-directional Uni-directional Auto

Option for “Other”:

xxx lines (from 24 to 132 lines at 1/6 line spacing)

Option for “Other”:

xxx lines (from 24 to *132 lines)

Increment: 1/180 inch

Note: The current options are marked with “*”.

Rev. A

1-4

DLQ-3000+

Table 1-36. Options for SelecType 2, Font and Pitch

Menu Option Notes

SelecType 2

Language *English French

German Italian

Spanish Portuguese Paper Type Overlapping Form *Off On For continuous paper only

Intensity Mode *Normal Dark Use the copy mode only

Software *ESC/P2 IBM 2391 Plus Auto CR (IBM) *Off On For IBM 2391 Plus emulation A.G.M. (IBM) *Off On For IBM 2391 Plus emulation

Interface

I/F Time-out Input Buffer *On Off

Baud Rate 300 BPS 600 BPS

Parity Auto Tear-off *Off On

Auto LF *Off On 0 Slash *Off On Buzzer *On Off Standard Setting Ready?

*Normal Cards

Envelopes

*Auto Selection Parallel

RS-232C Option Slot

*10 sec.

From 1 to 255 seconds

1200 BPS 2400 BPS

4800 BPS 9600 BPS

*19200 BPS

*None Even

Odd

For cut sheet only

when the depth of multipart form printing is not enough.

Font

*Roman Sans Serif Courier Prestige Script OCR B Orator Orator S Script C Roman T Sans Serif H Draft H-Speed Draft

Pitch

*10 cpi 12 cpi 15 cpi 17 cpi 20 cpi Proportional

Note: The current options are marked with “*”.

1-44

Rev. A

Product Description

1.5.3 Functions at Power On

This printer has the following 7 service modes. To enter each mode, press specified button (buttons) while holding down the Power switch.



Test Printing

• Button LQ mode: Draft mode:

• Result Alphanumeric characters are printed continuously.

• Exit Press the

• Interface state All interfaces keep a busy state during the test printing.



Hex Dump Mode

• Buttons

• Result The printer prints the message “Hex Dump” and then starts printing

(period) is printed instead.

• Exit Press the

LF/FF

received data in the both hexadecimal code and corresponding

off the printer to exit the mode.

Pause

and

characters. If corresponding character does not exist, “.”

Pause

LF/FF Load/Eject

button and turn the printer Off.

Load/Eject

button to print data remaining in buffer. Then turn

button with the power switch On.

buttons with the power switch On.



Setting Printing

• Button

• Result Firmware version and user changeable default setting menu

• Exit When the printing is complete, the printed sheet or continuous paper

printer returns to the standby status.

• Interface State All the interfaces keeps a busy state during the printing.

SelecType

(SelecType menu) along with their options are printed with the subtitles in the selected language.

button with the power switch On.

is ejected or fed to the tear-off position, respectively. Then the

Note: In each mode mentioned above, when the printer fails to load paper, the printer goes

into the Paper-out error status. In this case, insert a sheet and press the Load/Eject button. (In the Hex Dump mode, the message “Hex Dump” is printed at first. Then the printer waits for data.)



Bi-D adjustment (Refer to Section 1.5.4.)

• Button



Program Reload Mode (Refer to Section 1.5.5.)

• Buttons



EEPROM Clear

• Buttons

• Result Resets the printer to the standard factory setting, which is not always

Pause

Tear Off, LF/FF, Load/Eject

switch On.

SelecType, Paper Select

(This function is used only for emergency.)

button with the power switch On.

Pause

and

Pause

, and

On. proper setting for each market.

buttons with the power

buttons with the power switch



Clear the driving line count for ribbon changing timing

• Button

• Result Clears the value for the driving line count stored in the EEPROM.

Rev. A

Paper Select

button with the power switch On.

1-4

DLQ-3000+

1.5.4 Bi-D Adjustment Mode

This printer has the Bi-D adjustment mode which enables users to align vertical lines. Refer to Table 1-37 and Figure 1-18.

Table 1-37. Bi-D Adjustment Item

Items Order

Draft mode 1 Bit Image (ESC ∗ 26H) mode LQ mode 3

Start

Turn the printer on w hile holding dow n "Pause" button.

The printer prints the guide for

Bi-D adjustm ent and the pattern print for the draft m ode.

Press " " or " " button until the LC D indicates the num ber for the m ost closely aligned pattern.

: N e x t : P revious : E n te r

Fix the selected num ber by pressing " " button, and the printer prints the next pattern print.

Are all the adjustm ents

m ade?

Yes

T u rn th e p rin te r o ff.

End

Figure 1-18. Bi-D Adjustment Flowchart

1.5.5 Program Reload Mode

The printer has a 512-K byte Flash-EEPROM as a printer control software and a boot-strap program storage. This Flash-EEPROM can erase all the data in itself at once electrically and reprogram. Using this mode, the printer control software can be changed completely. Refer to Chapter 3 for details.

1-46

Rev. A

Product Description

1.5.6 Initialization

1.5.6.1 Printer Initialization

This printer has 5 initialization types: Power-on initialization, Operator initialization, Initialization by the control panel operation, Software initialization and SelecType initialization.

Power-on Initialization



Triggers

• Turning on the printer

• Cold reset command (Remote RS command)



Actions performed

• Initializes the printer mechanism.

• Clears input data buffer.

• Clears download character set.

• Clears print buffer.

• Sets default values.

Operator Initialization



Trigger

• The printer recognizes the /INIT signal (negative pulse) of parallel interface.



Actions Performed

• Clears input data buffer.

• Clears download character set.

• Clears print buffer.

• Sets default values.

Initialization by the control panel operation



Trigger

• Pressing the



Actions performed

• Clears input data buffer.

• Clears print buffer.

• Sets default values.

Pause

Load/Eject

and

Software Initialization



Trigger

• ESC @ commend



Actions Performed

• Clears print buffer.

• Sets default values.

SelecType Initialization



Trigger

• Exiting the SelecType mode



Actions Performed

• The printer settings are reset to the default except the download definition is not cleared.

• The printer is put into the standby status.

buttons for 3 seconds.

Rev. A

1-4

DLQ-3000+

1.5.6.2 Initialize Defaults to the Standard

The use changeable defaults can be initialized to the standard settings by SelecType. The standard settings are shown in Table 1-38.

Table 1-38. Standard Settings

Items Standard settings

Font Roman Pitch 10 cpi Character Table PC437 Page Length Tractor 11 inch

CSF 132 lines Line Spacing 1/6 inch Top Margin Tractor 8.5 mm

Manual Rear 8.5 mm

Manual Front 8.5 mm

CSF 8.5 mm Bottom Margin Tractor 0.0 mm Left Margin 0 column Right Margin 136 columns Print Direction Bi-directional Message Language English Software ESC/P2 Interface Auto Selection Interface Auto Selection Time-out 10 seconds Input buffer ON Serial interface Baud Rate 19200 bps

Parity None Auto Tear-off Off Auto LF Off Auto CR (IBM 2391 PLUS) Off AGM (IBM 2391 PLUS) Off Over-lapping Forms Off Paper Type (Cut sheet) Normal Intensity Mode Normal 0 slash Off Buzzer On

1-48

Rev. A

1.6 Main Components

This printer is composed of the following components:



Printer mechanism



Main control board C210MAIN



PSB/PSE board C124 PSB/PSE



Control panel



Housings

1.6.1 C210MAIN Board

The C210MAIN consists of the followings:



CPU (H8/3033



CG-ROM



EEPROM



Flash-ROM/P-ROM for the program ROM



Gate array (E05B46)



DRAM



Drivers

Product Description

SDC03-V1 (PG M otor D river)

SLA5001 (Printhead D river)

2SA 1451 (Printhead D river)

SLA 7026M (C R M otor D river)

M P 5302 (R ibbon M otor D river)

EEPRO M

SLA 7024M (P F M o to r D riv e r)

CG-ROM

Flush R O M (P R O G R A M )

DRAM

E05A88(G ATE ARRAY)

H 8/3003(C PU )

Figure 1-19. C210MAIN Board Component Layout

Rev. A

1-4

DLQ-3000+

1.6.2 C124PSB/PSE Board

The electoral circuit board of this printer consists of 2 switching regulator circuits.

Fuse

Filter

Sw itching F E T

Transform er (T101)

TL494

(R egulator)

Transform er (T201)

Figure 1-20. C124PSB/PSE Board Component Layout

1.6.3 Printer Mechanism

The printer mechanism of this printer is composed of the followings:



CR motor



Ribbon motor



2 cooling fans



CR mechanism



PF motor



PG motor



Paper feed mechanism

1-50

Figure 1-21. Printer Mechanism

Rev. A

1.6.4 Housing

This printer is composed of the following housings:



Bottom frame assembly



Upper housing assembly Rear shield cover



Printer cover assembly



Upper connector cover



Lower housing assembly



Rear cover

Product Description

U pper H ousing A ssem bly

Printer Cover Assem bly

Low er H ousing A ssem bly

R e a r S h ie ld C o v e r

U pper C onnector C over

Figure 1-22. Printer Housings

R ear C over

Bottom Fram e Assem bly

Rev. A

1-51

Chapter 2

Operating Principle

2.1 Printer Mechanism Operating Principles.............................................2-1

2.1.1 Printing Mechanism......................................................................2-1

2.1.2 CR (Carriage) Mechanism ............................................................2-3

2.1.3 PG (Platen Gap) Adjustment Mechanism....................................2-4

2.1.4 Ribbon Feed/Ribbon Shift Mechanism........................................2-6

2.1.4.1 Ribbon Feed Mechanism.....................................................2-7

2.1.4.2 Ribbon Shift Mechanism......................................................2-7

2.1.5 Paper Feed Mechanism ................................................................2-9

2.1.5.1 Core of the Paper Feed Mechanism....................................2-9

2.1.5.2 Paper Feed Sensor Mechanism........................................2-10

2.1.5.3 Release Mechanism..........................................................2-12

2.2 Circuit Operating Principles................................................................2-13

2.2.1 Power Supply Voltage.................................................................2-13

2.2.2 Power Supply Circuit Operation ................................................2-14

2.3 Controller Circuit..................................................................................2-15

2.3.1 Interface Circuit...........................................................................2-18

2.3.2 Reset Circuit................................................................................2-19

2.3.3 Memory Back-up Circuit.............................................................2-20

2.3.4 Ribbon Motor Controller/Driver Circuit.....................................2-21

2.3.5 PF (Paper Feed) Motor Controller/Driver Circuit......................2-22

2.3.6 CR (Carriage) Motor Controller/Driver Circuit..........................2-23

2.3.6.1 Bi-D Adjustment Function..................................................2-25

2.3.6.2 Interlock Function..............................................................2-25

2.3.7 Printhead Controller/Driver Circuit............................................2-26

2.3.8 Control Panel Circuit...................................................................2-27

2.3.9 PG (Platen Gap) Motor Driver Circuit........................................2-28

2.3.10 Paper Thickness Detecting Circuit..........................................2-29

2.3.11 Paper Jam Sensor.....................................................................2-30

2.3.12 Other Sensor Circuits...............................................................2-31

Operating Principles

2.1 Printer M echanism Operating Princi pl es

This chapter describes the operating principles of the printer mechanism (M-5P60).

2.1.1 Printing Mechanism



Printhead The printing mechanism of this printer is composed of the 24-pin impact dot printhead and a ribbon mask. The printhead has 12 pin wires in each of 2 rows, which are aligned in an rhombic layout. (See Figure 1-2 in Chapter 1.) Each wire has its own drive coil.

Actuating P late

Stopper

Actuating S pring

W ire R esetting S pring

H ead D riving C oil

Iron C ore

Paper

Dot W ire

Ink R ibbon

R ibbon M ask

Platen

Figure 2-1. Structure of the printhead



Printing process

1. The printing signal transmitted from controller circuit to the head driver circuit is converted into the head drive voltage, which energizes a corresponding coil. The energized coil then magnetizes the iron core.

2. The magnetized iron core draws the actuating plate which joins to the dot wire. This movement rushes the wire toward the platen.

3. When the dot causes impact to the platen, it presses the ribbon to the paper, where a dot prints.

4. When the coil energizing is terminated, the iron core, losing magnetic force, is returned to the standby position by the bounce of the platen and tension of the actuating spring.

The printing mechanism has an integrated thermistor to detect head temperatures. The detected temperature is converted into an electrical signal and fed back to the controller circuit. This information as well as paper thickness is used as a basis for determining printhead driving mode to ensure high printing quality. It is particularly important to keep the head temperature at a proper level constantly to minimize burning and deterioration of the dot wires in the printhead, which are caused by the rise in the head temperatures due to continuous printing. When the head temperature is below the specified level, the appropriate driving mode is selected based on the detected temperature to keep the wires respondent. (Refer to Section 1.3.1 in Chapter 1.) See Table 2-1 in Page 2-2 for the printhead specification.

Rev. A

2-1

DLQ-3000+

Table 2-1. Printhead Specification

Item Description

Printing method Impact dot printing Number of wires 24 wires (14 wires on each of 2 rows in an rhombic

layout) Wire diameter 0.20 mm Head life Monochrome fabric ribbon: 200 million strokes / wire

Color ribbon: 100 million strokes / wire Weight 180 g Coil resistance Response period Drive voltage 31.5 to 38.5 V Driving condition

Environmental condition Temperature: 5 to 55° C

Printhead drive method Flywheel type

8.19 ± 0.5 Ω (at 25° C)

Normal mode: 462 µs

•

Normal drive copy mode (when multi-part form or thick paper is used.)

•

High duty condition (head temperature is high)

•

Cold mode (head temperature is low.)

Humidity: 10 to 85 %

2-2

Rev. A

Operating Principles

2.1.2 CR (Carriage) Mechanism

The CR mechanism consists of the CR movement mechanism, external cooling fan, and platen gap adjustment mechanism.



CR movement mechanism The CR is supported by 2 CR guide shafts by its high and low ends. The stepping motor used for the CR motor enables the CR to move to any positions. The motor also sends torque to the timing belt pulley to drive the timing belt. The timing belt with one of the edges fixed to the head carriage moves the head carriage along the carriage guide shaft from right to left or vice versa according to the direction the CR motor rotates. Since the length of the belt is affected by the change in temperature, belt tension spring is attached to keep the belt with a constant tension. The HP sensor (Home Position sensor) is located at the reference position (on the right side as seen from the front) in the printer mechanism. Photo-coupler system used for the sensor detects the CR when the flag of the CR crosses emission. It is only operated when the printer is turned on, and once it is detected, CR movement is put under the open-loop control system. After the controller circuit determines where to move the CR according to the received data, it converts the distance to the position into the corresponding phase change pulse and outputs it to the CR motor. If the CR home position is detected during printing or the printer initialization, it indicates the status that the printer fails to detect the home position at a correct position and an error occurs as a result. CR speed is controlled by the CR motor drive frequency which depends on the printing data.

Belt Tension Spring

Timing Belt

Platen

Printhead

Cooling Air

Flag

CR HP Sensor

Bushing

Timing Belt Pulley

External Cooling Fan

Figure 2-2. CR Mechanism



External cooling fans This printer is equipped with 2 cooling fans. One, located at the left bottom of the printer, eliminates excess heat from the circuit boards. The other one is externally attached to the right side of the printer mechanism to blow the air directly to remove excess heat from the printhead.

Table 2-2. External Cooling Fan Unit Specification

Type DC brush-less motor (ball bearing built in) Power supply voltage

35 VDC ± 10 % Consumption current 0.07 A or less Rotating speed 3800 rpm or more

Rev. A

DLQ-3000+

2.1.3 PG (Platen Gap) Adjustment Mechanism

PG adjustment is made manually and automatically. In the manual PG adjustment mode, the proper PG is originally set for the paper to be loaded by manually operating the PG adjust lever located at the left front of the printer. On the other hand, the automatic PG adjustment function lets the printer automatically measure the paper thickness and set the proper PG for the thickness. This mode is activated by setting the PG adjust lever to the automatic side. Figure 2-3 shows the PG adjustment mechanism.

Slit Disc Paper Thickness Sensor

PG Motor

Pinion Gear

CR Guide Shaft

Combination Gear

Sector Gear

PGHP Sensor

Platen

Printhead (CR Unit)

Ink Ribbon

Ribbon Mask

Paper

Figure 2-3. PG adjustment Mechanism

The PG adjustment mechanism located at the left top of the printer mechanism unit consists of the PG motor, CR guide shaft, sectorial gear, combination gear, PG home position sensor, and paper thickness sensor., After the PG is determined by the controller circuit according to the paper thickness, the PG motor rotates corresponding amount. The torque from the PG motor is transmitted via the motor pinion gear, combination gear and sectorial gear to the CR guide shaft. Since the shaft is eccentric, the CR on the shaft moves from or toward the platen as the shaft moves, depending on the direction the motor rotates. Seeing from the left side of the printer mechanism, the clockwise or counterclockwise rotation of the CR guide shaft narrows or widens the PG, respectively. The PG home position is detected when the sectorial gear pushes the actuator on the PG home position sensor.

2-4

Rev. A

Operating Principles



Manual PG adjustment function This function allows the user to set the proper PG manually by setting the PG adjust

lever to one of the steps from -1 to 9. The selected step is converted into 4-bit data using adjustment switches and the data is transferred to the controller circuit, where the PG is determined based on the information.

Table 2-3. PG and PG Adjust Switch

PG lever Adjust switch condition Corresponding paper PG width Print mode

Steps #1 #2 #3 #4 Thickness (PT) (mm)

-1 0 1 2 3 4 5 6 7 8 9

Automatic

{{

{

−

{

−−−

{{{

−

{

−−

{{

−

{

−−−−

−−

{{

−

{

−−−

{ {

{

−

{

−

{ {

−

−−

0.06=<PT<=0.11 0.35 Normal

0.06=<PT<=0.11 0.39 Normal

0.11<PT<=0.15 0.43 Normal

0.15<PT<=0.19 0.46 Normal

0.19<PT<=0.25 0.50 Copy 1/2

0.25<PT<=0.30 0.55 Copy 1/2

0.30<PT<=0.36 0.61 Copy 1/2

0.36<PT<=0.42 0.67 Copy 1/2

0.42<PT<=0.46 0.71 Copy 1/2

0.46<PT<=0.49 0.74 Copy 1/2

0.49<PT<=0.53 0.78 Copy 1/2

0.06=<PT<=0.53 Note 1 Note 2

Note)

1. PG width corresponds to the detected paper thickness.

2. Copy mode is used for paper with the thickness of 0.2 mm or more.



Automatic PG adjustment function PG is automatically adjusted based on the paper thickness detected paper thickness

sensor which consists of the slit disc and the photo-electric transfer. Paper thickness is detected in the following order:

1. PG home position is detected.

2. The gap between the platen surface and the printhead is measured by pressing the printhead to the platen through the ribbon mask and ink ribbon.

3. The paper thickness is by pressing the printhead to the paper surface through the ribbon mask and ink ribbon.

4. The printer sets the proper PG based on the measurement done in the step 2 and

PG is determined for each paper loading action. When the CSF is used, this function is activated when the printer is turned on. It is also performed when the paper quantity sensor in the hopper is reset. However, no printing is performed during this operation. (Refer to Section 2.3.10.)

Rev. A

DLQ-3000+

2.1.4 Ribbon Feed/Ribbon Shift Mechanism

Ribbon feed/ribbon shift mechanism, located at the upper part of the CR, is composed of the ribbon motor, ribbon wind-up mechanism inside the ribbon cartridge, ribbon shift mechanism, and color ribbon cartridge sensor. The torque from the ribbon motor, the only motor which drives these mechanisms, is transmitted to each mechanism by changing the direction for rotating the motor, as described below:



Forward rotation (Clockwise): Color/Black ribbon shift



Backward rotation (Counterclockwise): Ribbon feed

A stepping motor used for the ribbon motor enables the CR to move to and stop at any position. The color ribbon cartridge sensor detects which of color or black ribbon cartridge is installed and switches the ribbon motor between the monochrome ribbon mode and color ribbon mode according detected cartridge. The printer refers to the switch mode of the sensor when the printer is turned on or resuming the operation after the cover open error is detected. The motor is controlled by the open-loop system. While the motor is used fo r the ribbon shift, the color home position sensor detects the reference position (black) to manage the color ribbon shift. The motor drive speed and phase excitement mode changes in accordance with printing modes such as copy mode, normal mode and color mode.

R ibbon B rake Spring

Ink Ribbon

R ibbon Feed R oller

R ibbon H old R oller

R ibbon D rive G ear

Figure 2-4. Ribbon Feed/Ribbon Shift Mechanism

Table 2-4. Color Ribbon Cartridge Sensor Specification

R ibbon C artridge

C olor R ibbon C artridge Sensor

R ibbon Transm ission G ear Train

R ibbon P lanetary gear

CR/PF Pinion

R ibbon M otor

2-6

Detecting method Mechanical switch system Rated voltage/current 5 to 10 mA/5 VDC ± 5% Switch mode Monochrome ribbon mode : HIGH

Color ribbon mode: LOW

Rev. A

Operating Principles

2.1.4.1 Ribbon Feed Mechanism

The ribbon feed mechanism is composed of the ribbon feed mechanism in the carriage, ribbon motor and ribbon cartridge. When the ribbon motor rotates counterclockwise, the ribbon drive pulley is driven to feed the ribbon. See Table 2-5 which shows how the torque is differently transmitted via the gear train.

Table 2-5. Ribbon Motor Rotation and Torque Transmission

Rotational direction Torque transmission

C.C.W. (for ribbon feed)

C.W. (for ribbon shift)

Ribbon motor pinion → Ribbon planetary gear → Ribbon transmission gear train →Ribbon drive gear

Ribbon motor pinion → Ribbon planetary gear → Ribbon transmission gear (A) →Ribbon transmission gear (B) → CS reduction gear → CS drive cam → CS drive lever

The endless ink ribbon in the ink cartridge is routed between the ribbon feed roller and the ribbon hold roller. When the ribbon feed roller engaged with the ribbon drive gear is driven, the ribbon between the rollers winds up. The ribbon brake spring is set at the exit in the cartridge to wind the ribbon tightly.

2.1.4.2 Ribbon Shift Mechanism

The ribbon shift mechanism, which is composed of the ribbon motor, ribbon shift gear train and color HP (Home Position) sensor, shifts the ribbon cartridge back and forth on CR unit. Both black and color ribbons have the width of 1 inch. The black ribbon is entirely soaked with the black ink, and the color ribbon is composed of 4 colored bands of black, red, blue and yellow. When the color ribbon cartridge is installed on the CR, it is detected by the color HP sensor, and the printer enters the color ribbon mode. With this mechanism, the color print with 7 different colors is enabled. The printer shifts the color ribbon cartridge to the black band position before shifting to another color each time the printer is turned on or the cover open error is cleared. This is operated to avoid ribbon’s getting caught in the printhead and resultant failure in ribbon shifting. The printer enters the monochrome ribbon mode when the black ribbon is installed. In this mode, the printer shifts the cartridge with ¼ of the ribbon width under the following condition in order to lengthen the ribbon life:

• 10 cut sheets or 10 pages of continuous paper has been continuously printed after the last shift.

• The release lever setting is changed.

• Continuous paper is loaded.

The cartridge positioning spring behind the cartridge, having the positioning pin at the top, holds the ribbon cartridge firmly to act in the direction the CS drive lever is pressed down. The ribbon motor sends torque to the CS drive lever, which shifts the cartridge between any color bands, starting from the reference position, the position for the black belt. The reference position is detected by the color HP sensor.

C artridge P ositioning P in

C artridge P ositioning S pring

C olor R ibbon C artridge

Black

Cyan

M agenta

Yellow

C S D rive Lever

Figure 2-5. Ribbon Shift Mechanism

Rev. A

DLQ-3000+

Half-toning colors are created by printing a color on top of another, as shown in Table 2-6. The printer prints the brighter color first to prevent the ribbon from being stained

Table 2-6. Coloring Sequence

Print color Print ribbon

First print Second print Black Black Magenta Magenta Cyan Cyan Yellow Yellow Green Yellow Cyan

Orange Yellow Magenta Violet Magenta Cyan

Ribbon Transmission Gear (B)

Ribbon Transmission Gear (A)

Ribbon Planetary Gear

Ribbon Motor

−

CS Reduction Gear

CS Drive Lever

CS Drive Cam

Color HP Sensor

CS Drive Lever

Figure 2-6. Ribbon Shift Gear Train Mechanism

2-8

Rev. A

Operating Principles

2.1.5 Paper Feed Mechanism

The paper feed mechanism consists of the platen roller, PF roller (Paper Feed roller), paper eject roller, PF motor (Paper Feed motor), tractor unit, PEW sensor (Paper Width sensor), front/rear paper sensor, release sensor, paper jam sensor, and paper shift mechanism.

2.1.5.1 Core of the Paper Feed Mechanism

This printer feeds paper by sliding it horizontally. Paper feed operation varies depending on the release lever setting condition, as described below:



In the friction mode Paper is held by the front paper bail and the for roller assemblies (2 upper and 2 lower rollers) under the CR guide shaft.

• Feeding method: Front feeding (automatic), Rear feeding (manual), CSF feeding

• Ejecting method: Front ejection



In the tractor mode Switching the lever setting from the friction mode to the tractor mode puts the printer into the tractor mode. In the tractor mode, the drive is disengaged from the rollers by the release mechanism, and transmitted to the tractor side.

• Feeding method: Tractor

• Ejecting method: Front ejection



In the paper jam removal mode Torque is disengaged from all the rollers in this mode. (See Section 2.1.5.3.) A stepping motor is used for the PF motor, which enables the paper to move to and stop at any position regardless of the direction. The motor is controlled by the controller circuit by the open-loop system. It refers to the signals output from the sensors in the mechanism to determine the amount to slide paper and the corresponding motor pulse. Torque sent from the PF motor equally splits to the front and rear paper feed drive rollers via the 2 timing belts. If the belt tension is inappropriate (either too loose or too tense), the front and rear rollers lose balance and paper jam is caused as the result. To balance the belt tension with each other, reinstall the PF motor to the proper position. The PF motor is fixed with 2 screws and the adjusting part such as the PF tension shaft. (See chapter 3 for detailed procedure.)

P r in te r M e c h a n is m F ra m e

Paper Bail R oller

Paper Feed D rive Roller

Sub P aper Feed R oller A ssem bly

Tractor Transm ission G ear

Tractor

Paper Eject D rive Roller Assem bly

Platen

Paper Feed M otor

Figure 2-7. Core of the Paper Feed Mechanism

Rev. A

DLQ-3000+

2.1.5.2 Paper Feed Sensor Mechanism

The paper feed sensor mechanism is composed of the right/left PEW (Paper Width) sensors, front/rear paper sensors and paper jam sensor. These sensors detect conditions such as top and rear paper edge positions, paper width and paper jam. The paper feed sensor mechanism monitors detected conditions and feeds back the information to the CPU, which controls paper feeding. The feed-back timing for a read signal is selected by the CPU depending on the movements of the paper feed and carriage motors. Figure 2-8 illustrates the paper feed sensor mechanism. Table 2-7 lists the paper feed sensor functions.

Left P EW S ensor

Platen

Left P EW S ensor

Printhead

Front V iew

R ight PE W S ensor

M ask G uide

CR Motor

R ight PE W S ensor

Sub P aper Feed R oller Assem bly

Paper Jam Sensor

R ear P aper S ensor

M ask G uide

2-10

Printehad

Front P aper S ensor

Paper Eject D rive Roller A ssem bly

Top View

Figure 2-8. Paper Feed Sensor Mechanism

Rev. A

Table 2-7. Functions of the Paper Feed Sensor

Sensor Detection Function

Operating Principles

Paper width measurement (detects the left and right paper edges)

Right/left PEW sensors Paper bottom detection

(detects the rear edge.)

Paper end detection Ensures the paper feed and paper

Left PEW sensor alone Leading edge detection at

loading paper (detects the paper top.)

Front/Rear paper sensors

Rear paper sensor alone

Front paper sensor alone

Paper jam sensor Paper jam detection Detects paper jam condition in the

Detects the leading/rear edge of the paper.

Paper end detection Ensures the paper feed and paper

Detects the leading/rear edges of the paper

Detects the leading edge of the paper

Selects the left and right margins.

Depending on o the CR position, one of the sensors is used.

If one of the sensors detects paper, it is regarded “Paper is loaded”. If both sensors don’t detect paper, it is regarded “No paper is loaded”.

eject action. Determines the top margin.

Determines the top/bottom margin.

eject action. Detects the leading edge and

printable area for the black-solid print paper.

Performs front paper feeding.

front/rear paper feed direction.

Notes)

1. When the printer is powered on, if any of the right/left PEW sensor and front/rear paper sensor detects paper, the printer does not detect the leading edge of the paper but the paper end condition.

2. Left and right margin for cut sheet and continuous paper are switched by the release sensor.



Black solid mode This printer is equipped with the black solid print mode. In this mode, the printer prints regardless of the reflection rate of the paper.



Paper jam detection The paper jam sensor monitors a signal output for each step (1/216 inch per step). If the output signal becomes the same as the one for power on time and the following signals for the specified numbers of steps remain the same, the status is regarded as the paper jam error, and the CPU indicates the paper jam error.

Rev. A

2-11

DLQ-3000+

2.1.5.3 Release Mechanism

The release mechanism consists of the release lever, sub release lever, release lever link and release sensor. It switches the paper path between cut sheet mode (including CSF mode ), continuous paper mode and paper jam removal mode in accordance with the release lever setting. It is performed by switching the torque from the PF motor and adding /releasing pressure toward/from the rollers in the paper feed mechanism. The release lever shifts the release lever link via the sub release lever to add friction to paper or to release pressure from the paper.



Cut sheet mode The torque from the PPF motor is transmitted to the PF mechanism side, where the paper is fed with friction added by the sub paper loading roller assembly.



Continuous paper mode The torque from the PF motor is transmitted to the tractor gear via the tractor gear train to feed continuous paper. The sub paper loading rollers are used to hold and feed the paper only.



Paper jam removal mode To set the release lever to this mode releases the paper bail as well as the sub paper loading rollers. In this full release condition, the jammed paper can be manually ejected

The release sensor detects whether the release mechanism is in the cut sheet mode or continuous paper mode, and sends the information to the controller circuit.

Table 2-8. Release Mechanism Mode

Cut sheet

mode

Continuous

paper mode

Paper eject lever assembly Closed Open Open Paper loading drive roller Closed Closed Open Tractor transmission gear

and tractor gear condition

Disengaged Engaged Engaged

Release sensor state Open Closed Closed

Tractor Transmission Gear

Tractor Gear

Paper Feed Drive Roller

Sub Paper Feed Roller Assembly

Release Link Lever

Paper Bail Roller

Paper Eject Drive Roller Assembly

Paper jam

removal mode

Release Sensor

2-12

Sub Release Lever

Paper Jam Clear Mode

Figure 2-9. Release Mechanism

Friction Mode

Tractor Mode

Rev. A

Operating Principles

2.2 Circuit Operating Principles

The power source of this printer is composed of the power switch, AC cable and C124 PSB/PSE board. It supplies DC voltage used to control the printer operation.

2.2.1 Power Supply Voltage

The electrical circuit of this printer uses an RCC (ringing choke converter) type switching regulator, which outputs DC voltage required to operate the printer. DC voltage is divided into 3 blocks: +35 VDC (CH. A), +35 VDC (CH. B) and +5 VDC, as listed below.

Table 2-9. DC Voltage Application

Voltage level Connector No. Application

+35 VDC ± 10%

+5 VDC ± 5%

CN2 CH. A

CH. B

CN3 Logic

• CR motor

• Printhead drive voltage

• Printhead

• Cooling fan motor

• PF motor

• Ribbon motor

• Vpp of the flush memory

• Hold voltage for the PF motor

• Hold voltage for the ribbon motor

• Serial I/F level converter

• Type-B I/F power supply voltage

• I/F power supply

Rev. A

2-1

DLQ-3000+

2.2.2 Power Supply Circuit Operation

The AC power source is supplied to the PSB/PSE board via the AC cable, power switch and fuse. The AC voltage is full-wave rectified using the diode bridge (DB1) and smoothed by the condenser. The surge cut circuit by SCR reduces the rush current at power-on.



Over current protection circuit on the primary side

IC101 and IC201 detect the input voltage of the primary side. If the input voltage is normal, the current does not flow into the shunt-regulator. However, if the over current flows into the input voltage line, the shunt-regulator goes on and Q103 (Q203) goes on and Q101 (Q201) goes off.



+35 VDC block

For the 35VDC block, the voltage is applied with AC/DC conversion between the primary and secondary sides via coil T101 and T201. The amount of voltage and current output to the secondary circuit is controlled at the gate by the on/off operation of the main switching MOS FET (Q101 and Q201). Control is fed back to the Q101 and Q201 from each protection circuit and controller circuit.

[+35 VDC line over current protection circuit]

If the voltage level for the +35 VDC line drops below +13 V, Q153 (Q253) and Q154 are turned on by the detector circuit which consists of the R173 (R273) and R174 (R274), then the PC102 goes on and the current cuts off as the result. At this time, the delay circuit which consists of C157 and R154 makes the delay time. When the printer is turned on, the protection circuit can not start operation since the delay circuit acts to prevent the drivers on the main control board from rising before the +5 VDC lines rises up.

+5 VDC block



The +5 V line is produced out of the stabilized and smoothed +35 V by the Regulator IC TL494. Since the regulator internally has the stabilizing and smoothing circuit, informa tion o n stab ilization is not f ed back to the primary side except f or t he inf ormation on the over current protection circuit. When the output level of the +5 VDC is abnormally high, the status is fed back to the primary side via the Zener diode (ZD153) and PC102, then The gate for switching FET Q101 or Q201 is shortened to avoid abnormal operation of the mechanism.

AC Power

Fuse

EMI Filter

Diode Bridge

Surge Cut

Smoothing Circuit

Regulator IC

Constant Voltage Circuit

Main Switching Circuit

Half-wave Rectifier Smoothing Circuit

PC101

PC102

PC 201

Half-wave Rectifier Smoothing Circuit

Figure 2-10. Power Circuit Block Diagram

+5 VDC

+35 VDC (CH. B)

Protection Circuit

+35 VDC (CH. A)

2-14

Rev. A

Operating Principles

2.3 Controller Circuit

This section describes the controller circuit of this printer. This printer uses a 112-pin/QFPtype/16-bit microprocessor H8/3003 (IC16) for the CPU and drives it with the clock frequency of 14.7 MHz. The control program is stored in the 1-Mbit Flash-ROM (IC15) or PROM (IC18).The CPU receives the external reset signal and control the printer based on the control program. When the Flash-ROM is in use, the control program can be transferred by way of the parallel interface. DRAM is used as a work area and buffers. A non-volatile memory EEPROM (IC23) stores information such as default values, customer data, total printing amount value and PG adjustment value. The gate array E05B46 (IC25) controls the following:

Clock Addresses Memory DRAM Parallel I/F

Type-B I/F Ports Motors Bitmap Printheads It is also used for the PG measurement. The gate array E05A89 functions as the panel interface controlled by the CPU. It is directly attached to the control panel circuit board to simplify the circuits. See Table 2-10 which lists the main ICs and their functions.

Rev. A

2-1

DLQ-3000+

Table 2-10. Main ICs and their Functions

IC Location Function

CPU (H8/3003 equivalent) IC16 The main CPU of the controller circuit Gate Array (E05B46) IC25 Controls systems and peripheral devices. Gate Array (E05A89) (built

in the panel circuit board.) Flash-ROM IC15 Stores the control program.

PROM IC18 CG (8-Mbit MROM) IC21 Character generator

CG (4/8-Mbit MROM) IC24 Character generator DRAM (HM514260 equivalent) IC26 Manages buffers and work area. (4Mbit) EEPROM

(AT93C66 equivalent)) Reset IC (RST592D) IC22

Reset IC (RST594E) IC20 CR motor driver

(SLA7026) PF motor driver

(SLA7024M) Ribbon driver (MP5320) QM2

PG motor (SDC03-V1) QM1 Serial I/F transceiver IC

(MAX232CWE) Shunt regulator (TL431) IC19 3-terminal regulator

(LM75L12)

−

IC23

IC7

IC6

IC14

IC17

Functions as the I/F between the control panel and controller circuit.

Stores the control program when the Flash-ROM is not equipped.

Stores values for default setting, customer data and so on.

• Resets hardware

• Rests Flash-ROM (Recovery from the reset

condition is done for Flash-ROM prior to the CPU and gate arrays.)

• Reset hardware

• Resets the CPU and gate arrays.

Drives the CR motor by constant current/uni-polar drive.

Drives the PF motor by constant current/uni-polar drive.

Drives the ribbon motor on the CR by constant current/uni-polar drive.

Drives the PG motor by constant current/uni-polar drive.

Transceiver circuit for the serial I/F

Produces the reference voltage (power supply for the stabilizing the +5V) for the A/D converter.

Stabilizes 12V power supply voltage for head pre-drive.

2-16

Rev. A

Operating Principles

P a ra lle l I/F

Adjust Switch

External C ooling Fan

Paper Thickness Sensor

Type-B I/F (O ptional)

S e ria l I/F

Printhead

H ead D river

G a te A rra y E05B 46 (IC 25)

H ead Therm istor

Flash R O M /P R O M

Reset IC

EEPRO M

DRAM

Reset IC

S yste m B us

C ontrol Panel

G a te A rra y

E05A 89

CPU H 8/3003) (IC 16)

C over O pen Sensor

Color HP S ensor

R ear P aper Sensor

Front P aper Sensor

L e ft/R ig h t P E W Sensor

CR HP Sensor

R elease S ensor

C SF Paper Q uantity Sensor

C SF Sensor

CR Motor Driver

3-term inal R egulator

+5 V S tabilizing Circuit

P F M o to r D riv e r

+35 V

+35 (C H . A)

+12 V

+5 V

R ibbon M otor Driver

PPG M otor D river

Figure 2-11. Controller Circuit Block Diagram

PG H P Sensor

Paper Jam Sensor

+35 V S ensor

In te rlo c k S w itc h

Rev. A

2-1

DLQ-3000+

2.3.1 Interface Circuit

This section gives information on the parallel/serial interfaces of the DLQ-3000+.



Bi-directional parallel interface The gate array E05B46 manages the IEEE-1284 nibble mode function using the internal IFU (Interface Unit). It latches data from the host computer by the /STB signal and automatically sends the BUSY signal. When the data is stored in the buffer, the gate array clears the BUSY and sends /ACK back to the host computer.



Serial interface Received data RXD sent from the host computer (i.e. RECEIVED DATA, which is also applied to an optional interface.) is transferred to the CPU via the transceiver IC, and then to the input buffer. The CPU directly outputs TXD data (TRANSMIT DATA). The codes DC1/DC2 and DC3 are outputs when the input buffer is full, and DC1 is output when the buffer memory recovers to the normal level. The signal REV (same as DTR:DATA TERMINAL READY) is output to the port PC0 of the CPU to control the DTR. The printer resumes printing when the CR code is received or the input buffer is full.



Type-B interface Type-B interface is also controlled by the gate array E05B46.

System Bus

Type-B I/F

ADDRESS/DATA

HW R

RESET

READY

W RRDY

CMREQ RDREQ

PARALELL I/F

PARALELL DATA (D 0-7)

SLCT AFXT

BUSY

IN H

STB IN IT

ACK

ERR

G a te A rra y E05B 46

CPU

ADDRESS /DATA

DTR RXT TXD

2-18

Transceiver IC MAX202

REV DTR RXT TXD

S E R IA L I/F

Figure 2-12. Interface Circuit Block Diagram

Rev. A

Operating Principles

2.3.2 Reset Circuit

The hardware reset circuit for this printer has 2 reset ICs: RST592D (IC22) and RST594E (IC20). When the +5 v for logic line is unstable dew to power-on, it outputs the reset signal until the +5 VDC line is stabilized to avoid abnormal operation of the printer. RST592D monitors the Flash-ROM with the threshold voltage set at approximately 4.2 VDC. It outputs the reset signal until the +5 VDC line is stabilized to 4.2 VDC. The Flash-ROM recovers from the reset condition before the CPU and the gate arrays recover from the reset condition. RST594E monitors the CPU and the gate arrays. The threshold voltage is set at approximately 4.2 VDC. The reset signals is kept output until the +5 VDC line is 4.2 VDC. Since the reset signal from the RST592D is sent to the manual reset terminal (MRST) in the RST594E via the output port of the CPU, the Flash-ROM recovers from the reset condition before the CPU and the gate arrays recover from the reset condition.

Flash-ROM

CPU

+5V

Reset IC

PST592D

VOUT

VCC

Reset IC

PST594E

VCC

P61

RST

Figure 2-13. Reset Circuit Block Diagram

MRST

VOUT

System Bus

Gate Array E05B46

RSTIN

Rev. A

2-1

DLQ-3000+

2.3.3 Memory Back-up Circuit

When the printer power is turned off, mainly the following data is backed up in the EEPROM AT93C66 (IC23).



Paper length, TOF, TEAR OFF, left and right margins, line spacing, pitch selection, character code, character fonts, high speed print, print direction, customer code



Interface setting



Values used for controlling the mechanism (condition for all the sensors)



Adjusted values used for controlling the mechanism (i.e. Bi-D adjustment, PG adjustment and PG α value)



IPD ID for the boot strap program



The first operation date, accumulated print amount, accumulated power-on time

and timing for ribbon replacement Data to be backed up is transferred by the gate array as serial data. At printer power off, the gate array outputs the chip select signal ESC from port 126 and data to be backed-up is sent to the EEPROM from port 124 (EDO) before the power supply voltage completely drops. The data stored in the EEPROM is read by sending data to the EDI terminal in the gate array when the printer is turned on. ECK is the clock signal for synchronization.

G a te A rra y

E05B 46

ECK

ECS

EDO

EDI

EEPRO M AT93C 66

Figure 2-14.Memory Back-up Circuit Block Diagram

2-20

Rev. A

Operating Principles

2.3.4 Ribbon Motor Controller/Driver Circuit

A PM-type stepping motor is used for the ribbon motor of this printer. It is driven by 1-1 phase or 2-2 phase excitation mode, based on the selected rotational speed. This motor rotates in the both forward and backward directions and can stop at any position. Signal PFA, /PFA, PFB and /PFB are output to drive each phase from the gate array (E05B46) via the transistor array MP5302. Common voltage change signal (RF_R/H : Run/Hold) is output from a port of the same gate array. To hold, both faces are driven simultaneously using the 5 VDC line. To switch between Run and Hold is operated by the signals RF_R/H output from the gate array. While in the color ribbon mode, the printer switches mode between the copy mode and normal mode according to the signal output from the paper thickness sensor. See Table 2-11 for the ribbon motor drive term.

Table 2-11. Ribbon Motor Drive Term

Motor type 4 phases / 48-pole / PM-type stepping motor Power supply voltage Coil resistance Drive frequency At color select:460, 600 pps

Excitation mode At color select:2-2 phase

Consumption current (mA/motor)

Drive mode Constant current uni-polar drive (VPB line)

35 VDC ± 10% 76 Ω ± 10% (at 25°C per phase)

At ribbon feed:320, 640, 770 pps

At ribbon feed:2-2, 1-1 phase 1-fold speed (fabric ribbon):350 - 390

At color select

Copy mode: 550 or less Normal mode: 400 or less

Gate Array

E05B46

RFA RFA

RFB RFB

RF-R/H

Transistor Array

MP5302

B2 B3 B4

VPB(+35V)

C2 C3 C4

+5V

Figure 2-15. Ribbon Motor Driver circuit Block Diagram

RFA RFA RFB

RFB

RF COM

Rev. A

2-21

DLQ-3000+

2.3.5 PF (Paper Feed) Motor Controller/Driver Circuit

Since this printer uses a hybrid-type stepping motor for the PF motor, it allows the paper to move to and stop at any position, regardless of the direction for feeding paper. The motor is driven by 1-2 phase with the open-loop system. Signals for 4 phases (PFA, /PFA, PFB and /PFB) are output from the gate array E05B46 (IC25) driven by the motor drive IC SLA7024M (IC6). To hold the motor, 2-2 phase is driven by the hold signal (PFIO) output from the same gate array. See Table 2-12 which specifies the PF motor terms.

Table 2-12. PF Motor Drive Term

Motor type 4 phases / 200-pole / HB-type stepping motor Power supply voltage Coil resistance Drive frequency Driving mode Constant current uni-polar drive Excitation mode 1-2 phase/2-2 phase (RUSH/HOLD) Paper feed speed 42 m second (6 IPS intermittent drive) Minimum step 0.07 mm (1/360”)/step Consumption current

(mA/motor)

35 VDC ± 10%

5.0 Ω ± 10% 1430 − 7200 pps

6 IPS (1-2 phase): 1.3 A/phase HOLD (2-2 phase): 0.35 A/phase

Gate Array E05B46

PF A

PF_A

PF B

PF_B

PFIO

Motor Drive IC SLA7024M(IC6)

VPB(+35V)

+5V

/TDA /TDB

VPB(+35V)

+5V

INA IN-A

INB IN-B

VSA VSB

PFA PFB

RSB RSA GND A

GND B

Figure 2-16. PF Motor Drive Circuit Block Diagram

PF COM

PF A PF_A PF B PF_B

2-22

Rev. A

Operating Principles

2.3.6 CR (Carriage) Motor Controller/Driver Circuit

The CR motor for this printer is a hybrid-type stepping motor, which enables the CR to move to and stop at any position exactly, using both forward and backward rotation. It is controlled by the open-loop system and driven by 1-2 phase, 2-2 phase or W1-2 phase (for micro step), depending on the CR speed. This motor is controlled by the signals for 4 phases (PFA, /PFA, PFB and /PFB) output from the gate array E05B46 (IC25) via the drive IC SLA7026M (IC7). The motor is also controlled by W1-2 phase for micro step. In this mode, the micro step current set signals (/CASA1, 2 and CASA 1, 2) are output to divide each set current for phase A and B into 4 steps with the range of 0 to 100 %. These 4 steps are divided further into 8 steps, which varies depending on the combination with the continuity timing.

Table 2-13. CR Motor Specification

Motor type 4 phases/200-pole/HB-type stepping motor Power supply voltage Coil resistance Drive frequency 960 to 5760 pps Consumption current 2-2 phase, 4-fold speed: 2.5 A/phase

Excitation mode 1-2 phase/2-2 phase/W1-2 phase drive

Note) Drive frequency and excitation mode vary with print speed.

35 VDC ± 10% (31.5 − 38.5 VDC)

1.1 Ω ± 10% (at 25°C/phase)

1-2 phase, 2/3-fold speed: 2.0A/ phase W1-2 phase, 1-fold speed: 1.5A/ phase

Gate Array

E05B46

CR_A CR_A

CR_B CR_B

CAMA/B1-6

CAHDA/CAHDB

CASA1/CBSA1 CASA2/CBSA2

VPA(+35V)

+5V

CR Motor Drive IC

SLA7026M

/INA /IN_A /INB /IN_B

VSA VSB

PFA PFB RSB

RSA GND A

GND B

/TDA /TDB

VPA

+5V

Interlock

Switch

CR COM CR COM CR A CR_A CR B CR_B

Figure 2-17. CR Motor Drive Circuit Block Diagram

Rev. A

2-2

DLQ-3000+

Note) : Applicable when the CR moves from 1st to 136th column direction.

Table 2-14. 2-2 Phase Drive

Step No. Phase A Phase /A Phase B Phase /B

1On–On– 2On– –On 3–On–On 4 – On On –

Table 2-15. 1-2 Phase Drive

Step No. Phase A Phase /A Phase B Phase /B

1On–On– 2On––– 3On– –On 4–––On 5–On–On 6–On–– 7 – On On – 8––On–

Table 2-16. W1-2 Phase Drive

Step No. Phase A Phase /A Phase B Phase /B

1 On (70.7%) – On (70.7%) – 2 On (43.1%) – On (100%) – 3 – – On (100%) – 4 – On (43.1%) On (100%) – 5 – On (70.7%) On (70.7%) – 6 – On (100%) On (43.1%) – 7 – On (100%) – – 8 – On (100%) – On (43.1%)

9 – On (70.7%) – On (70.7%) 10 – On (43.1%) – On (100%) 11 – – – On (100%) 12 On (43.1%) – – On (100%) 13 On (70.7%) – – On (70.7%) 14 On (100%) – – On (43.1%) 15 On (100%) – – – 16 On (100%) – On (43.1%) –

Note)

1. Applicable when the CR moves from 1st to 136th column direction.

2. Values shown in ( ) are current rates.

2-24

Rev. A

Operating Principles

2.3.6.1 Bi-D Adjustment Function

Bi-D adjustment is performed to align dots vertically for the Bi-directional printing. This is accomplished by delaying the print timing pulse on which the carriage moves from the 136th column to the 1st, using the print timing pulse when the carriage moves from the 1st to 136th column as reference. Since print timing pulse varies according to the carriage speed, the adjustment should be implemented for each speed mode. For this printer, the adjustment can be made for the 4-fold, 2-fold and the default speeds.

2.3.6.2 Interlock Function

The mechanical cover open switch is serially connected to the common (VPA) on the CR motor. When the printer cover is open, the interlock function acts so that the motor does not rotate.

Rev. A

2-2

DLQ-3000+

2.3.7 Printhead Controller/Driver Circuit

The printhead of this printer has 24 head coils (12X2 lines) driven by the constant current coil driver circuit which consists of 2 transistors (PNP and NPN) and MOSFET. The printhead is driven by the flat wheel system. The transistors turn on and off the head coil voltages (VPA, VPB) according to the printing pulse A. MOSFET turns on and off the GP according to the printing pulse B. If the 2 printing pulses are driven by different printing timings, the head drive waveform shown bellow appears, since the printing pulse B controls the drive waveform for the period of time “T” after the printing pulse A was driven. This is to adjust the head drive waveform to avoid decline in respond speed at continuous printing.

VPA/VPB (31.5~38.5V )

Print Pulse A

Print Pulse B

Head Coil

Print Pulse B

Head Coil Drive Waveform

Figure 2-18. Printhead Drive Waveform

Data from the host computer is expanded into image data (CG data) and latched in the gate array E05B46. The head data is allocated in the gate array. The latched data is processed internally in the gate array and output while the signal NHPW/PHPW is active.

Table 2-17. Printhead Controller/Driver Circuit Specification

Head drive voltage Responding

35 VDC ± 10% 462 seconds (2.16 KHz, normal mode, normal condition)

waveform Drive current Peak time: 3.3 A (at 5°C, copy 2 mode)

VPA/VPB

CPU

E05B46

ADRESS/ DATA BUS

PHD01-14

HWR

LWR

NHD01-24

PreDriver

(QM3,4)

PreDriver

(IC1-4)

Printhead Driver

Printhead

(Q6-33)

Printhead Driver

(QM5-10)

2-26

Control Board

Figure 2-19. Printhead Controller/Driver Circuit Block Diagram

Rev. A

Operating Principles

2.3.8 Control Panel Circuit

E05A89, the gate array for the control panel I/F, has the LCD driver, LED driver and panel switch input circuit built in. The serial I/F is used for signal transmission between the control panel and the main control board. The cover open sensor signal on the logic line is directly sent to the main control board via the control panel board. If the printer cover is open, an interlock switch function is activated for safety and puts the printer inactive state.

LC D

LCD Driver

C ontrol Board

DATA

RST

PNLTOM AIN

MAINTOPNL

SCK

+5V GND

CASE O PEN

G a te A rra y

E05A 89

Switch

LED s

C over O pen Sensor

Figure 2-20. Control Panel Circuit Block Diagram

Rev. A

2-2

DLQ-3000+

2.3.9 PG (Platen Gap) Motor Driver Circuit

Since a PM-type stepping motor is used for the PG motor, the motor can rotate in the both forward and backward direction and stop anywhere. The torque from the PG motor moves the CR guide shaft to obtain the proper PG. (Refer to Section 2.1.3.) The motor is driven by 2-2 phase. Signals for 4 phases (PGA, PGAN, PGB and PGBN) are output from the gate array E05B46 via the transistor array SDC03-V1. To hold the motor, the hold signal (PGI) is output from the same gate array. Then the transistors 2SC3859 (Q4) and SHA03-V1 (Q3) are turned off to change the drive voltage from PBS (+35V) to the 5 VDC. See Table 2-18 for PG motor specification.

Table 2-18. PG Motor Specification

Motor type 4 phases/8-pole/PM-type stepping motor Power supply voltage Coil resistance Consumption current

(per 1 phase) Drive frequency 350 pps Drive mode Constant current uni-polar drive Excitation mode Uni-polar constant voltage drive, 2-2 phase drive Rotational direction CW: Widens the PG

35 VDC ± 6% 250 ± 18Ω Rush: 0.2 A on the average

Hold: 0.02A

CCW: Narrows the PG

PGA PGB PGC

PGD

PGCOM

Transistor Array SDC03-V1

+5V

VPB

Figure 2-21. PG Motor Drive Circuit Block Diagram

Gate Array E05b46

PGA PGAN PGB PGBN

PGI

2-28

Rev. A

Operating Principles

2.3.10 Paper Thickness Detecting Circuit

PG is detected by the paper thickness sensor which consists of the slit disc and the photoelectric transfer element. See Table 2-19 and Figure 2-22 for the paper thickness sensor specification and paper thickness sensor circuit block diagram, respectively.

Table 2-19. Paper Thickness Sensor Specification

Detecting method Photo interrupt system Power supply voltage Outputs In 2 channels, TTL level Minimum detecting thickness 0.008 mm Detecting range 0 to 0.53 mm

+5V

PENCA

5 VDC ± 5%

Gate Array

E05B46

PENCA

PENCB

Paper Thickness Sensor

PENCB

PHA

Condition

Figure 2-22. Paper Thickness Sensor Circuit Block Diagram

To determine the paper thickness, the printer monitors the waveforms output from the PG sensor, as shown in Figure 2-22. “T” output for PHD shows a period of time in which 2chanel pulses PENCA and PENCB change for 180°. The printer counts the different numbers of pulses output while the printhead moves from PG home position to the platen surface and surface of the loaded paper to determine the paper thickness which corresponds to the difference between 2 values. The numbers of pulses are counted in the following order:

1. After the printer power is turned on, the PG home position is detected.

2. Distance between the printhead and platen surface is measured While the printhead is moving from the PG home position toward the platen surface, the waveform stays at a constant level and when that status exceeds for specified period of time, the printer assumes that the printhead has reached the platen. The PG motor consequently stops rotating and the numbers of the pulses output during this operation is counted and the value is fed back to the CPU.

3. The printhead returns to the stand-by position.

4. The distance between the PG home position and loaded paper surface is measured in

the same procedure.

Paper thickness is determined for each paper loaded. The last values for the platen position and PG before power-off are stored in the EEPROM and are no lost if the printer power is turned off.

Rev. A

2-2

DLQ-3000+

2.3.11 Paper Jam Sensor

This printer is equipped with the paper jam sensor mechanism which consists of the magnetized roller attached to the same shaft for the sub loading roller assembly and the sensor (hall element) located beside the rear paper sensor. Having no contact with the loading drive roller assembly, the magnetized roller rotates independently along paper. Table 2-20 shows the paper jam sensor specification.

Table 2-20. Paper Jam Specification

Detecting element Hall element Outputs In 1 channel, TTL level Power supply voltage

5 VDC ± 5%

Paper Feed D rive R oller Assem bly

Paper

Paper Jam S ensor (H all Sensor)

CPU

PJAM

M agnetized R oller

PA7

Figure 2-23. Paper Jam Sensor Block Diagram

The CPU reads the signal output directly from the paper jam sensor for each step (1/216 inch / step). If the current signal condition is the same as the previous one, it indicates the status that the magnetized roller is not rotating, which is considered paper jam. When the printer detects that condition continuously for the specified numbers of the output signals, it indicates the paper jam error, and enters non-printing status. The paper jam signal conditions for normal state and paper jam state are shown in Figure 2-24.

Previously detected condition

C urrently detected condition

N orm al Paper Feeding C ondition

Paper Jam C ondition

Figure 2-24. Paper Jam Sensor Signals

Paper jam detection starts after each paper loading motion regardless of the paper feed direction. However, the sensor ignores the pulse output while the paper feed direction is changed.

2-30

Rev. A

Operating Principles

2.3.12 Other Sensor Circuits

This printer is equipped with other sensors to monitor printer condition in detailed.



Head thermistor The head thermistor detects temperatures around the head and sends the information with the analog signal to the CPU A/C converter using the internal resistance (16.5K Ω). This information prevents worn-out and shorter life of the drive coils due to over duty printing, and protects printhead during operation at low temperatures.



+35 VDC monitor The CPU monitors head drive voltage by detecting the +35 VDC line with the internal A/D converter. The printer changes the print mode according to the detected change in the head drive voltage.



Cover open sensor Cover open sensor, located at the top right of the upper housing, detects the printer cover’s open/close condition. The output signal is reversed by the digital transistor and input to the CPU interruption port via the filter circuit which consists of the resistor and condenser.

Table 2-21. Cover Open Sensor Specification

Detecting method Mechanical switch Power supply voltage Detecting mode Cover open : LOW

5 VDC ± 5%

Cover closed : HIGH



Color HP (Home Position) sensor Color HP sensor uses a photo interrupter system. When the home position for the color ribbon cartridge is detected, the output signal is pulled up to 10 KΩ, then input to the CPU port via the filter circuit which consists of the resistance and the condenser.

Table 2-22. Color HP Sensor Specification

Detecting method Photo interrupter system Output system Open collector system

Resistance to voltage:30V or less Sink current : 0.3 mA or less

Switch mode In the home position : LOW

Off the home position : HIGH

Note) After the printer is powered on or the cover open is detected, the printer refers to

the switching mode of this sensor.



Rear paper sensor Rear paper sensor is located on the right side of the paper jam sensor. The output signal is pulled up by 6.2 KΩ, then input to the CPU port via the filter circuit which consists of the resistor and the condenser.

Table 2-23. Rear Paper Sensor Specification

Detecting method Mechanical switch (connector switch) system Rated

current/voltage Switch mode Paper detected : LOW

0.6 − 1.0mA, 5VDC ± 5%

No paper detected : HIGH

Rev. A

2-31

DLQ-3000+



Front paper sensor Front paper sensor detects TOF position as well as paper presence condition. It uses a photo interrupter system. However, one end of the detecting lever is mechanically used to detect the leading edge of the paper, and the other end is to cut in between the photo interrupter sensor to detect paper. The output signal is pulled up to 10 KΩ, then input to the CPU port via the filter circuit which consists of the resistor and the condenser.

Table 2-24. Front Paper Sensor Specification

Detecting method Photo interrupter systems Output system Open collector system

Resistance to voltage:30V or less Sink current : 0.3 mA or less

Detecting mode Paper detected : LOW

No paper detected : HIGH



Right/left PEW sensor Right/left sensors are located on the left and right column direction with the CR on the mask guide in between. They don’t only detect paper but the paper width so as to determine the right and left margins. The output signal is output to the CPU A/D converter.

Table 2-25. Right/left PEW Sensor Specification

Detecting method Photo micro sensor system Output system Collector Power supply voltage



CR home position sensor The output signal for this sensor is pulled up to 10K Ω, then input to the CPU A/D converter via the filter circuit which consists of the resistor and the condenser.

Table 2-26. CR Home Position Sensor Specification

Detecting method Photo coupler system Output system Open collector system

Power supply voltage Switching mode In the home position : LOW



Release sensor The output signal for this sensor is pulled up to 6.2K Ω, then input to the CPU port via the filter circuit which consists of the resistor and the condenser.

5 VDC ± 5%

Resistance to voltage:30V or less Sink current : 0.3 mA or less

5 VDC ± 5%

Off the home position :HIGH

2-32

Table 2-27. Release Sensor Specification

Detecting method Leaf switch (mechanical) system Rated current/voltage Switch mode Cut sheet mode : Close

0.6 to 1.0mA, 5VDC ± 5%

Continuous paper mode : Open Paper jam removal mode : Open

Rev. A

Operating Principles



CSF sensor CSF sensor uses terminals for the CSF paper quantity sensor. The output signal for this sensor is pulled up to 10K Ω, then input to the CPU via the filter circuit which consists of the resistor and the condenser.

Table 2-28. CSF Sensor Switch Mode

Switch mode CSF installed: LOW

No CSF installed: HIGH



CSF paper quantity sensor CSF sensor, a potentiometer, is not attached to the printer but to the CSF. It monitors paper quantity in the hopper and send the analog signal to the internal A/D converter of the CPU.



PGHP (Platen Gap Home Position) sensor The output signal for this sensor is pulled up to 390Ω, then input to the CPU port via the filter circuit which consists of the resistor and the condenser.

Table 2-29. PGHP Sensor Specification

Detecting method Micro switch system Power supply voltage Switch mode In the home position: LOW

5 VDC ± 5%

Off the home position :HIGH

Rev. A

2-3

Chapter 3

Disassembly and Assembly

3.1 Overview .................................................................................................3-1

3.1.1 Tools...............................................................................................3-1

3.1.2 Checks after Repair.......................................................................3-2

3.2 Disassembly and Assembly..................................................................3-3

3.2.1 Printhead Replacement ................................................................3-4

3.2.1.1 Printhead Removal..............................................................3-4

3.2.1.2 Ribbon Mask Removal........................................................3-5

3.2.2 Electrical Board Removal.............................................................3-6

3.2.2.1 Rear Cover Removal...........................................................3-6

3.2.2.2 C210 MAIN Board Removal................................................3-7

3.2.2.3 C124 PSB/PSE Board Removal .........................................3-9

3.2.3 Control Panel Removal...............................................................3-10

3.2.4 Adjust Switch Removal...............................................................3-10

3.2.5 Upper Housing Assembly Removal...........................................3-11

3.2.6 Printer Mechanism Removal......................................................3-12

3.2.6.1 Printer Mechanism Removal.............................................3-13

3.2.6.2 HP (Home Position) Sensor Assembly Removal..............3-14

3.2.6.3 Front Paper Sensor Removal............................................3-14

3.2.6.4 PF Sensor Assembly Removal..........................................3-15

3.2.6.5 PF Motor Assembly Removal............................................3-15

3.2.6.6 CR Motor Assembly Removal ...........................................3-16

3.2.6.7 CS (Color Shift) Motor Assembly Removal.......................3-17

3.2.6.8 Paper Eject Lever Assembly .............................................3-18

3.2.6.9 PG Motor Removal............................................................3-19

3.2.6.10 PG Sensor Removal........................................................3-19

3.2.6.11 PGHP Sensor Removal...................................................3-19

3.2.6.12 CR Removal....................................................................3-20

3.2.6.13 CS Board Assembly Removal.........................................3-23

3.2.6.14 PEW Sensor Assembly Removal....................................3-24

3.2.6.15 Color Ribbon Sensor Removal........................................3-25

3.2.6.16 Platen Removal...............................................................3-26

3.2.6.17 Paper Jam Sensor / Rear Paper Sensor Removal..........3-28

3.2.7 Lower Housing Assembly Removal...........................................3-29

3.3 Reloading the Control Program..........................................................3-30

Disassembly and Assembly

3.1 Overview

This chapter describes the procedures for disassembling and assembling the printer. Be sure to read the precaution prior to disassembly and assembly.

WARNING



The temperature of the printhead can be very high during printing. Therefore,



always make sure that the printhead is cool enough to handle it.



Be sure to disconnect the AC power cable from the socket and disconnect the



interface cable prior to disassembling the printer.

CAUTION



Use only specified tools to keep the printer at its optimum condition.

 

Use only specified lubricants and adhesives.

 

Be sure to perform any specified adjustments.

 

Before disassembling, remove all options and accessories such as a sheet guide



and a ribbon cartridge.

3.1.1 Tools

Make sure you use the tools listed in Table 3-1 when disassembling and assembling the printer.

Table 3-1. Tools

To ols Availability Part No.

Phillips screwdriver #2 Y B743800200 Box dri ver Y B741700200 Thickness gauge set Y B776702201 Round-nosed pliers Y B740400100 Nippers Y B740600100 Tweezers Y B741000100 ET holder Y B74800500

Note) Y: Available in the market.

Be sure to used specified types of screws when assembling the printer.

Table 3-2. Screw Types

Abbreviation Part name

CB Cross-recessed Bind head screw CBB Cross-recessed Bind head B-tight screw CBS Cross-recessed Bind head S-tight screw CBB (P4) Cross-recessed Bind head B-tight sems screw CP (P4) Cross-recessed Pan head sems screw CC Cross-recessed Cup head screw

Rev. A

3-1

DLQ-3000+

3.1.2 Checks after Repair

The check list shown below contains items to be checked after repairing the printer. Make sure that you use the list to ensure that printer performance is up to the standard before returning the printer to the customer.

Table 3-3. Check List after Repairing

Item Location Check points Check



Printing Printhead Are any dots missing?

Version up Shipping

mechanism Does the CR move smoothly?

Paper feed mechanism

Paper paths Is paper selection smooth?

PG adjustment

mechanism

Self-test Is the test successful? On-line test Is the test successful? Printhead PG adjustment Print Bi-D adjustment Paper feed Belt tension adjustment

PG mechanism Control program

— —

Is the ribbon mask bent?



Noise  Dust, Debris  Lubrication Is color shifting OK? Is the CR motor overheated? Is paper fed smoothly?



Noise  Dust, Debris  Lubrication Is the PF motor overheated? Is the platen damaged?

Are tractor teeth OK? Is there any foreign matter lodged in the paper paths? Does the PG move smoothly when measuring the PG. Is the PG properly set?

PG motor backlash adjustment The program version is . Are the ribbon cartridge and adjusting tools removed? Are the accessories came with the printer all packed?

Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary



Check  Unnecessary

3-2

Rev. A

Disassembly and Assembly

3.2 Disassembly and Assembly

This section describes how to disassemble the printer. Unless otherwise specified, no assembly procedures are included, since it is usually performed by reversing the disassembly procedures. Points to note at disassembling and assembling are described under the heading WORK POINTS. Adjustments required after assembling are described under the heading REQUIRED ADJUSTMENTS. Be sure to follow the instructions and perform any necessary adjustments. The procedure for disassembling the main component is shown below:

1) Printhead replacement

2) Rear cover removal

3) Electrical board removal

4) Control panel removal

5) Upper housing assembly removal

6) Printer mechanism disassembly

Refer to the exploded diagrams in Appendix for detailed part engagement and location.

Note) Perform “Control program reload” when C210 MAIN and sub boards are replaced.

START

Rear Cover Removal

C ontrol Panel R em oval

Adjust Switch Rem oval

U pper H ousing A ssem bly Rem oval

Printer M echanism Disassem bly

Printhead R em oval

M ask R ibbon R em oval

Electrical C ircuit B oard Rem oval

C 210 M AIN B oard Rem oval

R eloading the C ontrol Program

C 124 PSB/PSE Board Rem oval

Low er H ousing A ssem bly Rem oval

Figure 3-1. Disassembly Flowchart

Rev. A

DLQ-3000+

3.2.1 Printhead Replacement

3.2.1.1 Printhead Removal

You can remove the printhead without removing the upper housing assembly or printer mechanism. Step 1) Open the printer cover assembly, and remove 2 screws (CBS, 3X12) securing the

printhead.

Step 2) Lift up the printhead a little and release the head FFCs from the clips in the CR

assembly. Then disconnect the FFCs from the printhead.

Step 3) Remove the printhead from the CR assembly.

Head FFC

Printhead

CBS Screws (3X12)

Figure 3-2. Printhead Removal

CAUTION

Perform “Platen gap adjustment” after replacing the printhead.



 

When replacing the printhead, replace the ribbon mask along with the printhead.



3-4

Rev. A

Epson DLQ-3000+ Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PRECAUTIONS

PREFACE

REVISION SHEET

TABLE OF CONTENTS

Product Description

1.3 Hardware Specification

Disassembly and Assembly