Epson 980 Service manual

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Page 1

SERVICE MANUAL

SERVICE MANUALSERVICE MANUAL

Color ink jet printer

EPSON Stylus Color 980

SEIJ00012

Page 2

Notice:

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All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

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

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All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

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The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their

respective owners. EPSON disclaims any and all rights in those marks.

Page 3

PRECAUTIONS

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

DANGER

WARNING

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 DANGER Headings.

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

DANGER

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

2. NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

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

WARNING

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

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

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

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTISTATIC 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.

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PREFACE

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of Stylus Color 980. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:

CHAPTER 1. PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3. TROUBLESHOOTING

Provides the step-by-step procedures for troubleshooting.

CHAPTER 4. DISASSEMBLY AND ASSEMBLY

Describes the step-by-step procedures for disassembling and assembling the product.

CHAPTER 5. ADJUSTMENTS

Provides Epson-approved methods for adjustment.

CHAPTER 6. MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.

CHAPTER 7. APPENDIX

Provides the following additional information for reference:

• Connector pin assignments

• Electric circuit boards components layout

• Exploded diagram

• Electrical circuit boards schematics

Page 5

Contents

Product Description

Features Specifications

Printing Specifications .............................................................................. 6

Options and Consumable Products .......................................................... 9

Paper Specifications ............................................................................... 11

Printable Area ......................................................................................... 13

Ink Cartridge Specifications .................................................................... 15

Electrical Specifications .......................................................................... 17

Environmental Condition ........................................................................ 17

Reliability ................................................................................................ 18

Safety Approvals .................................................................................... 18

Acoustic Noise ........................................................................................ 18

CE Marking (220 ~ 240 V version) ......................................................... 18

Physical Specifications ........................................................................... 18

Interface

Parallel Interface (Forward Channel) ..................................................... 19

Parallel Interface (Reverse Channel) ..................................................... 22

USB Interface ......................................................................................... 24

Optional interface ................................................................................... 24

Printer Language and Emulation ............................................................ 27

Prevention Hosts from Data Transfer time-out ....................................... 27

Auto Interface Selection ......................................................................... 27

........................................................................................................ 5

.............................................................................................. 6

Cut Sheet ........................................................................................... 11

Transparency, Glossy Film ................................................................. 11

Envelope ............................................................................................ 11

Index Card .......................................................................................... 11

Self Adhesive Sheets ......................................................................... 11

Photo Paper ....................................................................................... 12

Photo Stickers .................................................................................... 12

Black Ink Cartridge ............................................................................. 15

Color Ink Cartridge ............................................................................. 16

...................................................................................................... 19

IEEE 1284.4 Protocol ......................................................................... 28

Control Panel Operation

Indicators (LEDs) ................................................................................... 29

Panel Functions ..................................................................................... 30

Printer Setting Mode ........................................................................... 30

Special Setting Mode ......................................................................... 32

Printer Condition and Panel Status ........................................................ 33

Error Status

Ink Out .................................................................................................... 34

Paper Out ............................................................................................... 34

Paper Jam .............................................................................................. 34

No Ink Cartridge ..................................................................................... 34

Maintenance Request ............................................................................ 34

Fatal Errors ............................................................................................ 34

Double Feed Errors ................................................................................ 34

Printer Initialization Component Layout

Printer Mechanism ................................................................................. 36

C380 Main Board ................................................................................... 37

C265 PSB/PSE Board ............................................................................ 39

C265 PNL Board .................................................................................... 40

C265 Relay Board .................................................................................. 40

................................................................................................ 34

........................................................................... 29

................................................................................... 35

.................................................................................... 36

Operating Principles

Overview Printer Mechanism Operating Principles

Carriage Mechanism .............................................................................. 44

Printing Mechanism ................................................................................ 46

Paper Load Mechanism ......................................................................... 47

Paper Feed Mechanism ......................................................................... 49

Pump/ASF Switch Mechanism ............................................................... 50

.................................................................................................... 42

................................................ 42

Page 6

Pump / Carriage Lock / Head Cleaner Mechanism ................................ 52

Electrical Circuit Operation Principles

C265 PSB/PSE Power Supply Board ..................................................... 54

C380Main Board .................................................................................... 57

CR Motor Driver Circuit .......................................................................... 65

PF Motor Driver Circuit ........................................................................... 67

Pump/ASF Motor Driver Circuit .............................................................. 69

Printhead Driver Circuit .......................................................................... 70

Cooling Fan Driver Circuit ...................................................................... 72

ASF Solenoid Driver Circuit .................................................................... 74

EEPROM Control Driver Circuit ............................................................. 75

.................................................... 54

Troubleshooting

Overview

Troubleshooting with LED Error Indications ........................................... 78

Isolating the Faulty Part on the Power Supply Board ............................. 88

Isolating the Faulty Part according to the Phenomenon ......................... 90

..................................................................................................... 77

Remedies for Paper Out Error ............................................................ 79

Remedies for the Paper Jam Error ..................................................... 81

Remedies for No I/C and Ink Out Errors ............................................. 83

Remedies for the Maintenance Error ................................................. 85

Remedies for Fatal Error .................................................................... 86

Disassembly and Assembly

Overview

Precautions for Disassembling the Printer ........................................... 100

Disassembly Procedures

Upper Case and Control Panel Removal ............................................. 104

Printer Mechanism Removal ................................................................ 105

C380 Main Board Unit Removal ........................................................... 106

Relay Board and Cooling Fan Removal ............................................... 107

Shield Plate on the C380 Main Board Removal ................................... 108

C265 PSB/PSE Board Removal ........................................................... 109

Printer Mechanism Disassembly .......................................................... 111

................................................................................................... 100

........................................................................ 102

Printhead Removal ........................................................................... 111

CR Motor Removal ........................................................................... 113

PF Motor Removal ........................................................................... 114

Pump/ASF Motor and Solenoid Removal ......................................... 115

ASF Unit Removal ............................................................................ 115

ASF Disassembly 116

ASF Sensor Removal ....................................................................... 120

CRHP Sensor Removal .................................................................... 121

PE Sensor Removal ......................................................................... 121

Encoder Belt Sensor Removal ......................................................... 122

Carriage Unit Removal ..................................................................... 123

Pump Unit Removal ......................................................................... 124

Paper Eject Frame Removal ............................................................ 125

Paper Eject Roller Removal ............................................................. 125

Platen Removal ................................................................................ 126

PF Roller Removal ........................................................................... 127

Adjustment

Overview

Conditions for Each Adjustment ........................................................... 130

Adjustments

Preliminary Operation .......................................................................... 133

Head Actuator Voltage Input ................................................................ 135

Head ID Retrieval ................................................................................. 136

Head Angular Adjustment .................................................................... 136

Bi-Directional Adjustment ..................................................................... 137

USB ID Input ........................................................................................ 140

USB ID Retrieval .................................................................................. 141

Printhead Cleaning Using the Program ................................................ 142

Initial Ink Charge .................................................................................. 143

Refurbishment for DOA ........................................................................ 143

Indication of the Counter Value for the Waste Ink Pad ........................ 144

Fan Check ............................................................................................ 146

Paper Gap Adjustment ......................................................................... 147

.................................................................................................. 130

............................................................................................. 133

Maintenance

Overview

Maintenance ......................................................................................... 151

Lubrication and Adhesion

Lubricating the Carriage Guide Shaft ................................................... 155

.................................................................................................. 151

Cleaning the Printhead ..................................................................... 152

Maintenance Request Error ............................................................. 153

...................................................................... 154

Page 7

Appendix

Connector Summary EEPROM ADDRESS MAP Component Layout Parts List Exploded Diagrams Circuit Diagrams

.................................................................................................. 173

............................................................................... 161

.................................................................................. 169

................................................................................. 176

...................................................................................... 184

....................................................................... 165

Page 8

PRODUCT DESCRIPTION

CHAPTER

Page 9

EPSON Stylus Color 980 Revision A

1.1 FEATURES

The Stylus COLOR 980 is the latest in EPSON’s advanced lines of ink jet printers and offering the following features.

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High color print quality:

- 2880 (H) x1440 (V) dpi printing

- Printing with 4 color inks (YMCK)

- Traditional and New Microweave

- Improvement in color rendering using variable dot

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Built-in auto sheet feeder:

- Holds 100 cut-sheets (64 g/m

- Holds 10 envelopes

- Holds 30 transparency fIlms

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Built-in 3 I/F

- Bi-directional parallel I/F (lEEE-1284 level 1 device)

- USB

- Optional Type-B level 2 I/F card slot

)

Figure 1-1. Stylus Color 980

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4 scaleable fonts, 5 LQ fonts

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13 character tables (Standard version)

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37 character tables (NLSP version)

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Duplex printing mode

Product Description Features 5

Page 10

EPSON Stylus Color 980 Revision A

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1.2 Specifications

Print direction: Bi-direction with logic seeking

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Print speed and Printable columns

1.2.1 Printing Specifications

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Print method: On demand ink jet

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Nozzle configuration: Monochrome=192 nozzles (96 x 2 staggered)

Color=96 nozzles x 3 (Cyan, Magenta, Yellow) (See Figure 1-2 for the nozzle configuration.)

#96

#95

#94

#93

R ow A (B lack 1)

R ow B (B lack 2)

Figure 1-2. Nozzle configuration

360 dpi

180 dpi

#96

#95

#94

#93

R ow C (M agenta)

Row D (Cyan)

#96

#95

#94

#93

Row E (Yellow)

Table 1-1.

Print Speed and Printable Columns for Character Mode

Character pitch Printable columns LQ speed

10 CPI (Pica) 80 285 CPS

12 CPI (Elite) 96 342 CPS

15 CPI 120 428 CPS

17 CPI (Pica condensed) 137 487 CPS

20 CPI (EIite condensed) 160 570 CPS

Table 1-2.

Print Speed and Printable columns for Raster Graphics Mode

Horizontal resolution

180 dpi 8.26 inch 1488 28.5 IPS

360 dpi 8.26 inch 2976 28.5 IPS

720 dpi 8.26 inch 5952 20 IPS

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Control code: ESC/P2 and expanded raster graphics code

Printab le area Available dot CRS

EPSON Remote command IBM X24E emulation

Product Description Specifications 6

Page 11

EPSON Stylus Color 980 Revision A

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Character tables: Legal and 14 international character sets

Standard version: (13 character tables)

Italic table PC 860 (Portuguese) PC 850 (Multilingual) PC 437(US, Standard Europe) PC 861 (Icelandic) PC 863(Canadian-French) PC 865(Nordic) Abicomp BRASCII Roman 8 ISO Latin 1 PC 858 ISO 8859-15

NLSP version: (36 character tables)

Italic table PC437 PC437 Greek PC850 PC852 PC853 PC855 PC857 PC860 PC861 PC865 PC866 PC869 MAZOWIA Code MJK ISO 8859-7 lSO Latin 1T Bulgaria PC774 Estonia ISO 8859-2 PC866 LAT PC866 UKR PC AR864 PC APTEC PC708 PC720 Hebrew7* Hebrew8* PC862* Abicomp BRASCII Roman 8 ISO Latin 1 PC 858 lSO 8859-15

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Typeface

Bit map LQ font:

EPSON Roman 10 CPI, 12 CPI, 15CPI, Proportional EPSON Sans Serif 10 CPI, 12 CPI, 15CPI, Proportional EPSON Courier 10 CPI, 12 CPI, 15CPI EPSON Prestige 10 CPI, 12 CPI, 15CPI EPSON Script 10 CPI, 12 CPI, 15CPI

Scaleable font

EPSON Roman 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Sans Serif 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Roman T 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Sans Serif H 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)

* Each Typeface has 4 variation s as the following example of

EPSON Roman.

EPSON Roman normal EPSON Roman bold EPSON Roman italic EPSON Roman bold italic

See Table 1-3 which lists the character tables and available typefaces.

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Feeding method: Friction feed with ASF

* These character tables can not be selected in the Default setting

mode.

Product Description Specifications 7

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Line spacing: 1/6 inch, 1/8 inch or programable at 1/360

inch

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Paper path: Cut-sheet ASF (Top entry, Front out)

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Feed speed: 192/360 inch feed = 116 ms

Continuous feed = 176.3 mm/second

(6.94 inch/second)

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Input data buffer: 256 KB

Page 12

EPSON Stylus Color 980 Revision A

Table 1-3. Character Tables and Available Typefaces

Character Tables Bit map font Scaleable font

Italic table PC 860 (Portuguese) PC 861 (Icelandic) PC 865 (Nordic) Abicomp lSO Latin1

Standard version

ISO 8859-15

Italic table PC 850 (Multilingual) PC 861 (Icelandic)

Abicomp lSOLatin1 ISO 8859-15

PC437Greek PC 853 (Turkish) PC 857 (Turkish) PC 869 (Greek) Code MJK (CSFR) lSO Latin 1T (Turkish)

NLSP version

PC 774 1SO 8859-2 (lSO Latin 2) PC 866 UKR

PC APTEC (Arabic) PC 720 (Arabic)

PC 437 (US Standard Europe) PC 850 (Multilingual) PC 863 (Canadian-French) BRASCII Roman 8 PC 858

PC 437(US Standard Europe) PC 860(Portuguese) PC 865(Nordic) BRASCIl Roman8 PC 858

PC 852 (East Europe) PC 855 (Cyrillic) PC 866 (Russian) MAZOWIA (Poland) lSO 8859-7 (Latin/Greek) Bulgaria (Bulgarian) Estonia PC 866 LAT

PC 708 (Arabic) PC AR864 (Arabic)

EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script

EPSON Roman EPSON Sans Serif

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

EPSON Roman EPSON Sans Serif

Not supported

Hebrew7* Hebrew 8* PC862 (Hebrew)*

EPSON Roman EPSON Courier

Not supported

* Not mentioned in the User’s Guide. These character tables can not select in the default setting

mode.

Product Description Specifications 8

Page 13

EPSON Stylus Color 980 Revision A

1.2.2 Options and Consumable Products

∗

NOTE:The asterisk (

number, which varies by country.

NOTE:The availability of special media varies by country.

Table 1-4. Options Available for Stylus Color 980

Type B Multi-protocol Ethernet Interface Card C82362

Type B 100BASE-TX Multi-protocol Ethernet Interface Card

Type B IEEE1394 Interface Card C82372

Table 1-5. Ink Cartridge Available for Stylus Color 980

) is a substitute for the last digit of the product

Items Codes

∗

/C82364

C82363 C82384

∗ ∗

∗

Items Codes

Black Ink Cartridge T003

∗

Color Ink Cartridge T005

See Table 1-6 and 1-7 which show the EPSON Special Media.

Product Description Specifications 9

Page 14

EPSON Stylus Color 980 Revision A

Table 1-6. EPSON Special Media Table 1-7. EPSON Special Media (continued)

Items Codes

EPSON 360 dpi Ink Jet Paper (A4) S041059 / S041025

EPSON 360 dpi Ink Jet Paper (Letter) S041060 / S041028

EPSON Photo Quality Ink Jet Paper (A4) S041061 / S041026

EPSON Photo Quality Ink Jet Paper (Letter) S041062 / S041029

EPSON Photo Quality Ink Jet Paper (Legal) S041067 / S041048

EPSON Photo Quality Ink Jet Card (A6) S041054

EPSON Photo Quality Ink Jet Card (5 x 8”) S041121

EPSON Photo Quality Ink Jet Card (8 x 10”) S041122

EPSON Photo Quality Self Adhesive Sheet (A4) S041106

EPSON Ink Jet Note Card (A6) (with envelopes) S041147

EPSON Ink Jet Greeting Cards (5 x 8”) (with envelopes) S041148

EPSON Ink Jet Greeting Cards (8 x 10”) (with envelopes) S041149

EPSON Photo Quality Glossy Film (A4) S041071

EPSON Photo Quality Glossy Film (Letter) S041072

EPSON Photo Quality Glossy Film (A6) S041107

EPSON Ink Jet Transparencies (A4) S041063

EPSON Ink Jet Transparencies (Letter) S041064

EPSON Photo Paper (A4) S041140

EPSON Photo Paper (100 x 150mm) S041255

EPSON Photo Paper (200 x 300mm) S041254

EPSON Premium Ink Jet Plain Paper (A4) S041214

EPSON Premium Glossy Photo Paper (A4) S041287 / S041297

EPSON Premium Glossy Photo Paper (Letter) SO41286

EPSON Matte Paper-Heavy weight (A4)

EPSON Matte Paper-Heavy weight (Letter) S041257

S041256 / S041258 S041259

EPSON Photo Paper (Letter) S041141

EPSON Photo Paper (4 x 6”) S041134

EPSON Photo Paper Cards (A4) S041177

EPSON Photo Stickers 16 (A6) S041144

EPSON Photo Stickers 4 (A6) S041176

EPSON Panoramic Photo Paper (210 x 594 mm) S041145

EPSON Iron-On Cool Peel Transfer Paper (A4) S041154

EPSON Iron-On Cool Peel Transfer Paper (Letter) S041153 / S041155

Product Description Specifications 10

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EPSON Stylus Color 980 Revision A

1.2.3 Paper Specifications

This section describes paper specifications including paper handling and printable area.

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Paper Handling: Do not feed paper in reverse more than 9.5 mm

(0.38”).

1.2.3.1 Cut Sheet

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Size: A4: [Width 210 mm (8.3”) x Length 297 mm (11.7”)] A5: [Width 148 mm (5.8”) x Length 210 mm (8.3”)] Letter: [Width 216 mm (8.5”) x Length 279 mm (11.0”)] B5: [Width 182 mm (7.2”) x Length 257 mm (10.1”)] Legal: [Width 216 mm (8.5”) x Length 356 mm (14.0”)] Half Letter: [Width 139.7 mm (5.5”) x Length 215.9 mm (8.5”)] Executive: [Width 184.2 mm (7.25”) x Length 266.7mm(10.5”)]

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Thickness: 0.08 mm (0.003”) - 0.11 mm (0.004”)

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Weight: 64g/m

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Paper Types: Bond paper, Plain paper, EPSON special media

(17Ib.) - 90g/m2 (24Ib.)

1.2.3.3 Envelope

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Size: No.10: [Width 241 mm (9 1/2”) x Length 104.8 mm (4 1/8”)] DL: [Width 220 mm (8.7”) x Length 110 mm (4.3”)] C6: [Width 162 mm (6.4”) x Length 114 mm (4.5”)] 5 x 8”: [Width 220 mm (8.7”) x Length 132 mm (5.2”)]

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Thickness: 0.16 mm (0.006”) - 0.52 mm (0.02”)

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Weight: 45g/m

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Paper Types: Bond paper, Plain paper, Air mail

NOTES:

1. Print on envelope at normal temperatures only.

2. Place the longer side of the envelope horizontal.

(12Ib.) - 75g/m2 (20Ib.)

1.2.3.4 Index Card

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Size: A6 Index card: [Width 105 mm (4.1”) x Length 148 mm (5.8”)] 5 x 8” Index card: [Width 127 mm (5.0”) x Length 203 mm (8.0”)] 10 x 8” Index card:[Width 127 mm (5.0”) x Length 203 mm (8.0”)]

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Thickness

1.2.3.2 Transparency, Glossy Fi lm

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Size A4: [Width 210 mm (8.3”) x Length 297 mm (11.7”)] Letter: [Width 216 mm (8.5”) x Length 279 mm (11.0”)] A6: [Width 105 mm (4.1”) x Length 148 mm (5.8”)]

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Thickness: 0.075 mm (0.003”) - 0.085 mm (0.0033”)

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Paper Types: EPSON special media

NOTE:Print on transparency at normal temperatures only.

Product Description Specifications 11

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Paper Types: EPSON special media

1.2.3.5 Self Adhesive Sheets

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Size A4: [Width 210 mm (8.3”) x Length 297 mm (11.7”)]



Paper Types: EPSON special media

Less than 0.23 mm (0.0091”)

Page 16

EPSON Stylus Color 980 Revision A

1.2.3.6 Photo Paper



Size: A4: [Width 210 mm (8.3”) x Length 297 mm (11.7”)] Letter: [Width 216 mm (8.5”) x Length 279 mm (11.0”)] 4 x 6”: [Width 102 mm (4”) x Length 152 mm (6”)] Panoramic: [Width 210 mm (8.3”) x Length 594 mm (23.4”)]

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Paper Types: EPSON special media

1.2.3.7 Photo Stickers

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Size: A6 with 4 or 16 frames:

[Width 105 mm (4.1”) x Length 148 mm (5.8”)]

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Paper Types: EPSON special media

Product Description Specifications 12

Page 17

EPSON Stylus Color 980 Revision A

1.2.4 Printable Area

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Cut Sheet See Figure 1-3 and Table 1-8 for the printable area for cut sheets.

Printable area

Figure 1-3. Printable Area for Cut Sheets

L M : L e ft M a rg in e R M : R ight M argine TM : Top M argine B M : B o tto m M a rg in e PW : P aper W idth PL: P aper Length

Table 1-8.

Minimum margin for Raster Graphics Mode / Character Mode

Paper

Size

A4 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)

A5 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)

Letter 3 mm (0.12”)

B5 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)

Legal 3 mm (0.12”)

Half Letter 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)

Executive 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”)

*1: For Raster Graphics mode *2: For Character mode *3: The minimum bottom margin is reduced to 3 mm when paper dimension is defined

by using the command. Otherwise, the minimum bottom margin remains 14 mm. Note the extra printing area with the bottom margin of 3 mm is not a guaranteed area.

Left Margin

(Minimum)

Right Margin

(Minimum)

3 mm (0.12”)* 9 mm (0.35”)*

Top Margin

(Minimum)

3 mm (0.12”)

Bottom Margin

(Minimum)

14 mm (0.54”) 3 mm (0.12”) *

Product Description Specifications 13

Page 18

EPSON Stylus Color 980 Revision A

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Envelope See Table 1-9 and Figure 1-4 which show the minimum margin and printable area for envelopes, respectively.

Table 1-9. Minimum Margin for Envelopes

Paper

Size

#10 3 mm (0.12”) 28 mm (1.10”) 3 mm (0.12”) 14 mm (0.54”)

DL 3 mm (0.12”) 7 mm (0.28”) 3 mm (0.12”) 14 mm (0.54”)

C6 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”) 14 mm (0.54”)

5 x 8 3 mm (0.12”) 7 mm (0.28”) 3 mm (0.12”) 14 mm (0.54”)

Left Margin

(Minimum)

Right Margin

(Minimum)

Top Margin

(Minimum)

Bottom Margin

(Minimum)

RMLM

Printable A re a

Figure 1-4. Printable Area for Envelopes

Product Description Specifications 14

Page 19

EPSON Stylus Color 980 Revision A

1.2.5 Ink Cartridge Specifications

28.9 m m

1.2.5.1 Black Ink Cartridge

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Type: Exclusive ink cartridge

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Color: Black



Print Capacity: 1200 pages / A4 (ISO/IEC 10561 Letter

Pattern at 360 dpi)

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Ink life: 2 years from indicated production date



Storage temperature:

Storage: -20°C ~ 40°C(within a month at 40 °C) Packing storage: -30°C ~ 40°C(within a month at 40 °C) Transit: -30°C ~ 60°C(within 120 hours at 60°C and

within a month at 40°C)

67.4 m m

65.9 m m (R ib area)

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Dimensions: 28.9 mm (W) x 67.4 mm (D) x 41.8 mm (H)

41.8 m m

27.4 m m (R ib area)

Figure 1-5. Black Ink Cartridge Appearance

Product Description Specifications 15

Page 20

EPSON Stylus Color 980 Revision A

1.2.5.2 Color Ink Cartridge



Type: Exclusive ink cartridge

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Color: Magenta, Cyan, Yellow

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Print Capacity: 530 pages / A4 (at 360 dpi, 5% duty each

color)



Ink life: 2 years from indicated production date



Storage temperature:

Storage: -20°C ~ 40°C(within a month at 40 °C) Packing storage: -30°C ~ 40°C (within a month at 40 °C) Transit: -30°C ~ 60°C (within 120 hours at 60°C and

within a month at 40°C)



Dimensions: 54.0 mm (W) x 67.4 mm (D) x 41.8 mm (H)

NOTES

1. Do not refill the cartridge. It is a consumable item.

2. Do not used the ink cartridge whose ink life has expired.

Ink will be frozen below -4

C. To use ink that is frozen, let it defrost

for at least 3 hours at room temperature.

54 m m

67.4 m m

65.9 m m (R ib area)

41.8 m m

52.5 m m (R ib area)

Figure 1-6. Color Ink Cartridge

Product Description Specifications 16

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EPSON Stylus Color 980 Revision A

Humidity

(% RH)

80%

55%

20%

10 27

( C )

( F )

G uaranteed A re a

1.2.6 Electrical Specifications

[120V version]



Rated voltage: AC120V



Input voltage range: AC99 ∼132V



Rated frequency range: 50 ∼ 60 Hz



Input frequency range: 49.5 ∼ 60.5 Hz



Rated current: 0.7A (Maximum 1.0A)



Power consumption: Approx.30W (ISO/IEC 10561 Letter pattern)

Energy Star compliant



Insulation Resistance: 10 M ohms min.

(between AC line and chassis, DC 500 V)



Dielectric strength: AC1000 V rms. 1 minute or AC1200 Vrms.

1 second (between AC line and chassis)

[220∼240V version]



Rated voltage: AC220V ∼ 240V

1.2.7 Environmental Condition



Temperature: Operating = 10 to 35 °C (See Figure 1-7.)

Non-operating = -20 to 60 °C *1 1 month at 40 °C 120 hours at 60 °C



Humidity: Operating = 20% ~ 80% RH *1

(See Figure 1-7.)

Non-operating = 5% ~ 85% RH *1 *2



Input voltage range: AC198 ∼ 264V



Rated frequency range: 50 ∼ 60Hz



Input frequency range: 49.5 ∼ 60.5Hz



Rated current: 0.4A (Maximum 0.5A)



Power consumption: Approx.30W (ISO/IEC 10561 Letter pattern)

Energy Star compliant



Insulation Resistance: 10M ohms min.



Product Description Specifications 17

Dielectric strength: AC1500 V rms.

(between AC line and chassis, DC500V)

1 minute (between AC line and chassis)



Resistance to shock: Operating = 1G, within 1 ms



Resistance to vibration: Operating = 0.15G (Operating)

*1: With a shipment container *2: Without condensation

Figure 1-7. Temperature / Humidity of Range

Non-operating = 2G, within 2 ms *1

Non-operating = 0.50G *1

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EPSON Stylus Color 980 Revision A

1.2.8 Reliability



Total print volume: 75,000 pages (A4, Letter)



Printhead life: 4000 million dots/nozzle

1.2.9 Safety Approvals

[120V version]



Safety standard: UL1950

CSA22.2 No.950



EMI: FCC part 15 subpart B class B

CSA C108.8 class B

[220∼240V version]



Safety standard: EN 60950 (VDE)



EMI: EN55022 (CISPR Pub.22) class B

AS/NZS 3548 class B

1.2.10 Acoustic Noise

1.2.11 CE Marking (220 ∼ 240 V version)



Low Voltage Directive 73/23/EEC: EN60950



EMC Directive 89/336/EEC: EN55022 Class B

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

IEC801-2 IEC801-3 IEC801-4

1.2.12 Physical Specifications



Weight: 8.4 Kg



Dimensions: 467 mm (W) x 296 mm (D) x 325 mm (H)



Level: Approximately 47 dB (A) (According to ISO

7779)

Product Description Specifications 18

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EPSON Stylus Color 980 Revision A

1.3 Interface

The EPSON Stylus Color 980 is equipped with USB, Bi-directional 8-bit parallel interface and a card slot for an optional Type-B interface.

1.3.1 Parallel Interface (Forward Channel)



Transmission mode: 8 bit parallel, IEEE-1284 compatibility mode



Synchronization: By /STROBE pulse



Handshaking: BY BUSY and /ACKLG signal



Signal level: TTL compatible level



Adaptable connector: 57-30360 (amphenol) or equivalent

The BUSY signal is set high before setting either/ERROR low or PE high, and held high until all these signals return to their inactive state.

The BUSY signal is HIGH:



During data entry (see Data transmission timing)



When the input data buffer is full



During/INIT signal is at LOW level or during hardware initialization.

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



Printer hardware error (fatal error)



Paper Out error



Paper Jam error



Ink Out error

The PE signal is at a high level during Paper Out error.

See Figure 1-8 and Table 1-10 which show the data transmission timing.

DATA

STROBE

BUSY

-ACKNLG

tsetup

tready

data byte n

thold

ts tb

tbusy

treply ta c k

tnbusy

data byte n+1

tnext

Figure 1-8. Data Transmission Timing



During a printer error condition (See /ERROR signal).



When the parallel interface is not selected.

Product Description Interface 19

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EPSON Stylus Color 980 Revision A

Table 1-10. Data Transmission Timing

Parameter Minimum Maximum

tsetup 500ns ---

thold 500ns ---

tstb 500ns ---

tready 0 ---

tbusy --- 500ns

tt-out* --- 120ns

tt-in** --- 200ns

treply 0 ---

tack 500ns 10us

tnbusy 0 ---

tnext 0 ---

NOTE:tt-out shows the rise and fall time of every output signal.

tt-in shows the rise and fall time of every input signal. Typical time of tack is shown in Table 1-11.

Table 1-11. Typical Time of Tack

Table 1-12. Signal level for TTL Compatible

(IEEE-1284 level 1 device)

Parameters Minimum Maximum Condition

VOH* --- 5.5V

VOL* -0.5V ---

IOH* --- 0.32mA VOH = 2.4V

IOL --- 12mA VOL = 0.4V

CO --- 50pF

VIH --- 2.0V

VIL 0.8V ---

IIH --- 0.32mA VIH = 2.0V

IIL --- 12mA VIL = 0.8V

CI --- 50pF

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

2.0 V or less when the printer is turned off.

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

Ω

Parallel Interface Mode Typical Time of Tack

High speed 1 us

Normal speed 3 us

See Table 1-13 which shows the connector pin assignment and signals for the forward channel of the parallel interface.

Product Description Interface 20

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EPSON Stylus Color 980 Revision A

Table 1-13. Parallel I/F Forward Channel

Pin No. Signal Name

1 /STROBE 19 I The strobe pulse. Read-in of data is performed at the falling edge of this pulse.

2 DATA0 20 I

3DATA1 21

4 DATA2 22

5DATA3 23

6 DATA4 24

7DATA5 25

8 DATA6 26

9DATA7 27

10 /ACKNLG 28 O This signal is a negative pulse indicating that the printer can again accept data.

11 BUSY 29 O A high signal indicates that the printer cannot receive data.

12 PE 28 O A high signal indicates paper-out error.

13 SLCT 28 O Always at high level when the printer is powered on.

14 /AFXT 30 I Not used.

31 /INIT 30 I

Return

GND Pin

In/Out Functional Description

The DATA0 through DATA7 signals represent data bits 0 to 7, respectively. Each signal is at high level when data is logical 1 and low level when data is logical 0.

The falling edge of a negative pulse or a low signal on this line causes the printer to initialize. Minimum 50 us pulse is necessary.

32 /ERROR 29 O A low signal indicates printer error condition.

36 /SLIN 30 I Not used.

18 Logic H ---- O Pulled up to +5V via 3.9K ohm resistor.

35 +5V ---- O Pulled up to +5V via 3.9K ohm resistor.

17 Chassis GND ---- --- Chassis GND.

16,33,

19-30

15,34 NC ---- --- Not connected.

*: In and Out refers to the direction of the signal as viewed from the printer.

GND ---- --- Signal GND.

Product Description Interface 21

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EPSON Stylus Color 980 Revision A

1.3.2 Parallel Interface (Reverse Channel)



Transmission mode: IEEE-1284 nibble mode



Adaptable connector: See the forward channel.



Synchronization: Refer to the IEEE-1284 specification



Handshaking: Refer to the IEEE-1284 specification



Data trans. timing: Refer to the IEEE-1284 specification



Signal level: IEEE-1284 level 1 device

(See forward channel.)



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.

When IEEE1284.4 is disabled;

[00H] [5DH] MFG:EPSON; CMD:ESCPL2,PRPXL,BDC; MDL:Stylus[SP]COLOR[SP]980; CLS:PRINTER; DES:EPSON[SP]Stylus[SP]COLOR[SP]980;

NOTES:

1. [00H] denotes a hexadecimal value of zero.

2. MDL value and DES value depend on the EEPROM setting.

3. CMD value depends on the IEEE1284.4 setting.

See Table 1-14 which shows pin assignment for reverse channel

When IEEE1284.4 is enabled;

[00H] [60H] MFG:EPSON; CMD:ESCPL2,PRPXL,BDC,D4; MDL:Stylus[SP]COLOR[SP]980; CLS:PRINTER; DES:EPSON[SP]Stylus[SP]COLOR[SP]980;

Product Description Interface 22

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EPSON Stylus Color 980 Revision A

Table 1-14. Pin Assignment For Reverse Channel

Pin No. Signal Name

1 HostClk 19 I Host clock signal.

2-9 Data0-7 20-27 I

10 PrtClk 28 O Printer clock signal.

11 PtrBusy, Data Bit-3,7 29 O Printer busy signal and reverse channel transfer data bit 3 or 7.

Return GND

In/Out Functional Description

The DATA0 through DATA7 signals represent data bits 0 to7, respectively. Each signal is at high level when data is logical 1 and low level when data is logical 0. These signals are used to transfer the 1284 extensibility request values to the printer.

12 AckData Req, DataBit-2,6 28 O

13 Xflag, DataBit-1,5 28 O X-flag signal and reverse channel transfer data bit 1 or 5.

14 HostBusy 30 I Host busy signal.

31 /INIT 30 I Not used.

32 /DataAvail, DataBit-0,4 29 O Data available signal and reverse channel transfer data bit 0 or 4.

36 1284-Active 30 I 1284 Active Signal

18 Logic-H ---- O Pulled up to +5V via 3.9K ohm resister.

35 +5V ---- O Pulled up to +5V via 3.3K ohm resister.

17 Chassis GND ---- --- Chassis GND.

16,33, 19-30 GND ---- --- Signal GND.

15,34 NC ---- --- Not connected.

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

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

Product Description Interface 23

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EPSON Stylus Color 980 Revision A

1.3.3 USB Interface



Standard: Based on the following:

Universal Serial Bus Specifications Rev. 1.0 Universal Serial Bus Device Class Definition for Printing Device Version 1.0



Bit Rate: 12 M bps



Data Encoding: NRZI



Adaptable Connector:USB Series B



Recommended Cable Length:2 meters

Table 1-15. Pin Assignment and Signal of the USB I/F

Pin No.

1 Vcc ----

2 -Data Bi-D Data

3+DataBi-D

4 Ground ---- Cable Ground

Signal

Name

I/O Description

Cable power, Maxi. power consumption is 100 mA

Data, pull up to +3.3 V via 1.5 K ohms resistor

Pin #2

Pin #1

1.3.4 Optional interface

Type-B level 2 optional interfaces are available.



Reply message: ESC/P2 is selected

Min-Type:MTP48p, PW80 cl 10 cpi, PRG (Wxxxxx)rev,

AP800ma, SPDO fast Product-Name: Stylus COLOR 980 Emulation-Type: ESCPL2-00 Entity-Type: EPSONLQ2

X24E is selected

Main-Type:MTP48p, PW80cl10cpi, PRG(Wxxxxx)rev,

AP800ma, SPDO fast Product-Name: Stylus COLOR 980 Emulation-Type: PRPXL24-00 Entity-Type: EPSONPRPXL24



Emergency command 0x00 :Get device ID

0x01 :Get all status



Sending BDC-ST through DBIN register When State-Reply is set “ON” by ST from Type-B I/F, sending BDCST through DBIN register is started. When State-Reply is started, “Start” and “End” of BDC-ST characters are announced by sending the Main command 0Eh.

See Table 1-16 which shows Reply for option command.

See Table 1-17 which shows Supported main command and sending timing

Pin #3

Pin #4

Figure 1-9. USB Pin Assignment

Product Description Interface 24

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EPSON Stylus Color 980 Revision A

Table 1-16. Reply for Option Command

Option command number Command name Reply-A Reply-B

00h No-operation None None

01h Start Hardware Reset Accept Execute OK

02h Start Software Reset Reject None

03h Send Main System Type Accept Execute OK

04h Send Name Data Reject None

05h Inquire Name Data Accept Execute OK

06h Send Product Name Accept Execute OK

07h Send Software Emulation Type Accept Execute OK

08h Complete Buffered Data Accept Check Condition

09h Stop Procedure Reject None

0Ah Return Buffered Data Reject None

0Bh Send Entity Type Accept Execute OK

0Ch Send Status Accept Execute OK

0Dh Quit Procedure Reject None

0Eh Inquire ASCII Message Reject None

0Fh Send ASCII Message Accept Execute OK

10h - 13h (Reserved) Unknown None

14h Inquire Emergency Message Accept Execute OK

15h Send Emergency Message Accept Execute OK

16h - 1Fh (Reserved) Unknown None

20h - FFh (Reserved) Unknown None

Product Description Interface 25

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EPSON Stylus Color 980 Revision A

Table 1-17. Supported main command and sending timing

Main command number Command name Sending timing



Start Software Reset

01h

02h

04h Send Name Data

Send Option Type

-INIT signal on the std. parallel I/F



Type-B I/F option command : 01h



Cold start



Deciding the level of Type-B I/F after powered on



Type-B I/F option command : 05h

07h Inquire Software Emulation Name

0Eh Inquire ASCII Message

14h Inquire Emergency Reply

15h Send Emergency Message



Changing Software Emulation Type



Writing to DBIN register



Reply for Emergency command



Receive Emergency command

Product Description Interface 26

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EPSON Stylus Color 980 Revision A



1.3.5 Printer Language and Emulation

Printer language: ESC/P2

IBM X24E emulation EPSON Remote

Interface state and interface selection



When the parallel interface is not selected, the interface goes into the BUSY state.

NOTE:An interrupt signal, such as /I NIT, on the parallel interface is

not effective while that interface is not selected.

1.3.6 Prevention Hosts from Data Transfer time-out

Generally, hosts abandon data transfer to peripherals when a peripheral is in the busy state for dozens of seconds continuously. To prevent hosts from this kind of time-out, the printer receives data very slowly, several bytes per minute, even if the printer is in busy state. This slowdown is started when the rest of the input buffer becomes several hundreds of bytes. Finally, the printer is in the busy state continuously when the input buffer is full. USB and IEEE1284.4 on the parallel interface do not require this function.

1.3.7 Auto Interface Selection

The EPSON Stylus Color 980 has three types of interfaces: USB, parallel interface and optional Type-B interface. Each interface can be selected manually in default setting mode or automatically.



Manual Selection: One of three interfaces can be selected in default setting mode.



Automatic Selection: The automatic interface selection is enabled by the default setting mode. In this automatic interface selection mode, the printer is initialized to the idle state scanning for which interface is to receive data when it is powered on. The interface that receives data first is selected. When the host stops data transfer and the printer is in the stand-by state for a number of seconds, the printer returns to the idle state. As long as the host sends data or the printer interface is busy state, the selected interface is let as it is. The changes to other interface are prohibited during duplex printing.

Product Description Interface 27

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EPSON Stylus Color 980 Revision A

1.3.7.1 IEEE 1284 .4 Protocol

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



Automatic selection: An initial state is compatible interface and starts IEEE1284.4 communication when magic strings (1284.4 synchronous commands) are received.



ON: IEEE1284.4 is enabled as initial state. Data sent before the magic string (1284.4 synchronous commands) is discarded.



OFF: IEEE1284.4 is disabled and IEEE1284.4 synchronous commands are ignored. Compatible interface is the initial state.

Product Description Interface 28

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EPSON Stylus Color 980 Revision A

1.4 Control Panel Operation

The control panel of the EPSON Stylus Color 980 is composed of the 2 non-lock type push-buttons, 1 lock-type push-button, and 4 LEDs, as shown below:

Paper O ut LED

In k O u t (Black) LED

In k O u t (Color) LED

C leaning B u tto n

Power LED

Power Button

Load/E ject B utto

1.4.1 Indicators (LEDs)

1. Power Lights when the operate switch is “ON”, and AC power is supplied.

2. Paper out Lights during the paper-out condition, and blinks during the paperjam condition.

3. Ink Out (Black) Lights during no Black ink condition, and blinks during the Black ink low condition.

4. Ink Out (Color) Lights during no Color ink condition, and blinks during the Color ink low condition.

Figure 1-10. Control Panel

Product Description Control Panel Operation 29

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EPSON Stylus Color 980 Revision A

1.4.2 Panel Functions



Panel function: Refer to Table 1-18.

Table 1-18. Panel Functions

Button Function

• Loads or ejects paper.

Load/Eject (within 2 seconds) *1

Load/Eject (for 2 seconds) *1

Cleaning (for 2 seconds) *1

Cleaning (within 2 seconds) *1

*1: 3 seconds is specified in the Users Gu ide. *2: This operation is not effective in printing status.



Panel function with power on:Refer to Table 1-19.

• When the carriage is in the I/C replacement position, pressing this button returns the carriage to the capping position.

• In the condition of “Double Feed Error” returning from error condition printing is restarted

• Starts the I/C replacement sequence. *2

• Move the carriage to the I/C replacement position.

• Starts the printhead cleaning sequence.

• Starts the I/C replacement sequence when the printer is in one of the following conditions: “Ink Low”, “Ink Out”, No Ink Cartridge” *2

• When the carriage is in the I/C replacement position, returns the carriage to the capping position.

1.4.2.1 Printer Setting Mode

While turning the printer on, press the Cleaning button, and the Paper Out LED starts blinking. This operation must be followed by pressing the specified button while the Paper Out LED is still blinking to enter the Default setting mode or Printhead alignment mode, as described in Table 1-20.

Table 1-20. Printer Setting Mode

Button Function / Operation

While the Paper Out LED is blinking, pressing

Cleaning or no button

Load/Eject (Press it within 10 seconds.)

Load/Eject (Hold it down for 10 seconds.)

*1: Leaving the Paper Out LED blinking wit hout pressi ng any butto n also gene rates

the Default setting mode.

*2: Not intended for users. This function is used only for troubleshooting.

the Cleaning or no button generates the Default setting mode. *1

While the Paper Out LED is blinking, pressing the Load/Eject button generates the Printhead alignment mode.

Changes the default for the parallel I/F communication protocol. *2

Table 1-19. Panel Function with Power On

Button Function

Load/Eject 1) Starts the status print. *1

Enters the printer setting mode. (The Paper Out LED starts

Cleaning

Load/Eject

Cleaning

*1: The status print includes firmware version, ink counter, and nozzle check

pattern.

blinking.) *2 Specified button must be then pressed while the LED is

blinking to activate each mode. (See Section 1.4.2.1.)

Enters the special setting mode. (Factory use only) Specified button must be then pressed while the Paper Out

LED is blinking to activate each mode. (See Section

1.4.2.2.)

See the following pages for detailed information on the default setting mode and the Printhead alignment mode.

Product Description Control Panel Operation 30

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EPSON Stylus Color 980 Revision A



Default setting mode Some printer setting parameters can be changed by users and will be referred at the time of printer initialization. The setting method is as shown below:

1. Enter the Default setting mode.

2. Select the desirable language for “Usage of this mode” by pressing the Cleaning button.

3. Press Load/Eject button. The current setting and the “Usage of this mode” in the selected language is printed.

4. Select the menu by pressing the Cleaning button.

5. Press the Load/Eject button to enter the value selection phase of the selected menu.

6. Select the value by pressing the Load/Eject button.

7. Press the Cleaning button. The printer memorizes the selected setting value, and returns the indication to the main menu.

8. Repeat the steps from 4 to 7. The menu selection will return to the first menu after the last menu selection is over.

9. Turn the printer off. The new settings are stored in the non-volatile memory.

Table 1-22. Default Setting Menu (continued)

Menu Setting

I/F mode Auto, Parallel, USB, Optional

Auto I/F wait mode 10 seconds, 30 seconds

This mode is for the network environment only.

Network I/F mode

Parallel I/F transfer rate Fast, Normal

Software ESC/P2, IBM X24E

Auto CR (IBM mode only) On, Off

A.G.M (IBM mode only) On, Off

Auto line feed On, Off

0 slash 0, 0

Character tables

Character tables In addition to the Standard version:

Off:

Used in a usual environment.

On: Used in the network environment.

Italic USA Italic UK Italic Italy PC 850 PC865 Abicomp

PC 858

Italic France Italic Denmark Italic spain 1 PC 860 PC 861 Roman 8 ISO 8859-15

Italic Germany Italic Sweden PC 437 PC 863 BRASCII ISO Latin 1

Table 1-21. Default Setting Menu

Menu Setting

Font

Pitch 10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi, Proportional

Print direction Auto, Bi-D, Uni-D

Loading Position 3 mm, 8.5 mm, Others

Roman, Sans Serif, Courier T, Sans Serif H, Draft

, Prestige, Script, Roman

*: Underlined values are the defaults for the EEPROM reset.

PC437 Greek PC852 PC869 ISO 8859-7 PC 774 PC 866 LAT PC 708

PC 437

PC 853 PC 857 MAZOWIA ISO Latin 1T Estonia PC 866 UKR PC 720

PC 855 PC 866 Code MJK Bulgaria ISO 8859-2 PC APTEC PC AR864

Product Description Control Panel Operation 31

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EPSON Stylus Color 980 Revision A



Printhead alignment mode

1.4.2.2 Special Setting Mode

Alignment method is as described below:

1. While holding down both Load/Eject and Cleaning (Black) buttons, turn the printer on.

2. Printer prints an instruction sheet that shows how to adjust the printer and current alignment.

3. Referring to the current alignment, press the Cleaning button until the LED indicate the appropriate test number.

4. Press the Load/Eject button. The printer prints the test pattern.

5. Referring to the test patterns on the new printout, select the most closely aligned pattern by pressing the Load/Eject button.

6. Press the Cleaning button.

7. Repeat the steps from 3 to 6 until all test patterns are properly aligned.

8. Turn the printer off.

While turning the printer on, pressing the both Load/Eject and Cleaning buttons generates the Special setting mode. While the Paper Out LED is blinking, activate each function by pressing the specified button(s) in the method described in Table 1-23.

Table 1-23. Special Setting Mode

Switch Function

While the Paper Out LED is blinking, pressing

Load/Eject

Cleaning (Hold it down for 10 seconds)

the Load/Eject button initializes the EEPROM and resets the timer IC. (Refer to EEPROM

Address Map in Appendix.)

While the Paper Out LED is blinking, pressing the Cleaning button for 10 seconds resets the waste ink counter in the EEPROM. (Refer to EEPROM Address Map in Appendix.)

Product Description Control Panel Operation 32

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EPSON Stylus Color 980 Revision A

1.4.3 Printer Condition and Panel Status

Table 1-24 shows printer condition and panel status. Since the table shows various error status and also indicates printer status, it enables you to find appropriate repair ways.

Table 1-24. Printer Condition and Panel Status

Indicators

Printer Status

Power

Power on condition On --- --- --- 9

Ink Sequence mode Blink --- --- --- 6

I/C replacement mode Blink --- --- --- 5

Data processing Blink --- --- --- 8

Paper Out --- --- --- On 4

Double Feed --- --- --- On 4

Ink Out (Black)

Ink Out

(CMY)

Paper Out

Priority

Paper Jam --- Off Off Blink 3

No I/C, Ink Out (Black) --- On --- --- 7

Ink level low (Black) --- Blink --- --- 7

No I/C, Ink Out (CMY) --- --- On --- 7

Ink level low (CMY) --- --- Blink --- 7

Enters the EEPROM and Timer IC Reset

Maintenance Request Blink Blink Blink Blink 2

Fatal Error Blink On On Blink 1

--- ON (for 1 second only) ---

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EPSON Stylus Color 980 Revision A

1.5 Error Status

When any of the following status occurs, the printer goes in the error status and stops receiving data, setting the /ERROR signal in the interface to “Low”, and Busy signal to “High”. During this condition, the printer is in non-printable status. Refer to Section 1.4.3 for detailed LED Panel indicator status and corresponding error types.

1.5.1 Ink Out

When the printer has run out the most of the ink of any color, it warns of Ink Low condition and keeps printing. When the printer runs out the whole ink of any color, it stops printing and indicates the Ink Out error. User is required to install a new ink-cartridge in this state. Note if an inkcartridge has been taken out, it should never be used again. Reinstalling the used cartridge (not fully filled with ink) upsets the ink level detection and may cause a serious problem in the printhead as a result.

CAUTIO N

Never use an ink cartridge that has been removed.

1.5.4 No Ink Cartridge

When the printer detects that the ink cartridge has come off, it goes into the No ink cartridge error.

1.5.5 Maintenance Request

When the total quantity of ink wasted through the cleanings and flushing has reached the limit, printer indicates this error and stops printing. The absorber in the printer needs to be replaced with a new one by a service person.

1.5.6 Fatal Errors

When the printer detects the carriage control error or CG access error, it enters the fatal error condition.

1.5.7 Double Feed Errors

When the printer fails to load a sheet, it goes Double feed error condition.

1.5.2 Paper Out

When the printer fails to load a sheet, it goes into the Paper Out error condition.

1.5.3 Paper Jam

When the printer fails to eject a sheet, it goes into the Paper Jam error condition.

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EPSON Stylus Color 980 Revision A

1.6 Printer Initialization

The EPSON Stylus Color 980 is equipped with three types of initialization methods.



Power-on initialization

The printer is initialized when it is turned on or recognizes the coldreset command (remote RS command). When the printer is initialized, it performs the following:

(a) Initializes the printer mechanism. (b) Clears the input data buffer. (c) Clears the print buffer. (d) Sets the default values.



Operator initialization

This printer is initialized when it is turned on again within 10 seconds after last power off or recognizes the /INIT signal (negative pulse) of the parallel interface. When printer is initialized, it performs the following:

(a) Caps the printhead. (b) Ejects a paper. (c) Clears the input data buffer. (d) Clears the print buffer. (e) Sets the default values.



Software initialization

The ESC@ command also initializes the printer. When the printer is initialized, it performs the following:

(a) Clears the print buffer. (b) Sets the default values.

Product Description Printer Initialization 35

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EPSON Stylus Color 980 Revision A

1.7 Component Layout

The main components of the Stylus Color 980 are as follows:

1) Printer mechanism

2) C380 Main board

3) C265 PSB/PSE board

4) C265 panel board

5) C265 relay board

1.7.1 Printer Mechanism

The printer mechanism of the Stylus Color 980 has black and color heads united in one unit which drives larger amount of nozzles (180 nozzles in total) than ever. Also, for a new ink jet printer feature, the printer has succeeded in printing in the acceleration/deceleration areas by reading the slits on the linear scale to improve the throughput. This improvement in throughput mostly depends on the Pump/ASF switching mechanism. In other printers, the gear trains are switched when the trigger lever hits the mechanism along with the carriage’s movement. In Stylus Color 980, however, the exclusive solenoid is directly attached to the mechanism instead. With the solenoid which switches drive at a higher speed, the printer can control high-speed paper ejection system: the printer bring the leading edge of the second sheet to the printing position just before ejecting the first sheet. The motors equipped with the printer are CR motor, PF motor, and the Pump/ASF Motor, same as for the Stylus Color 900.

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EPSON Stylus Color 980 Revision A

1.7.2 C380 Main Board

The main features of the C380 Main board are as follows.

1. IEEE1284 compliant ECP mode is available Type-B I/F is available

2. USB full-speed is available (at 12 M bps without the hub).

3. All motors (CR motor, Pump/ASF motor, and PF motor) are controlled with the micro step system (using up to 4W1-2 phase excitation mode) and current attenuation mode (First, Slow, Mixed, and Decay).

4. Intensive temperature control of the new type of the printhead: operates the cooling fan using the thermistors and the abnormal temperature detection circuit on the printhead board.

C90A09CA, a CPU which is the hub of the C380 Main board, has an internal flash memory with the size of 128 KB. Since the CPU runs with 24 MHz, it can send print data efficiently for a high throughput. The C380 Main board has two independent exclusive ASICs, ASIC1 and ASIC2. The former controls all interfaces but the USB I/F and sensors, while the latter controls the printhead, motors, encoder, and USB I/F. The combined IC (IC8) which has a normal timer IC and EERPOM in one chip also features the printer. Since the EEPROM counts ink consumption at the valuable printing

, its size has increased to 2 K bit.

to fire three different sizes of dots in one raster, and ink-jet specific adverse conditions such as uneven printing and white banding are improved as a result.

The C380 Main board is also equipped with a CG-ROM which deals with DOS users. The CG ROM attachment condition and size are as shown in Table 1-25.

Table 1-25. Relation between P-ROM and CG ROM

Destination P-ROM CG-ROM

Standard version 16 M (TFU00X) Not installed.

NLSP version 16 M (TFU00X) 16M (M160B16XA)

NOTE:The “X” in the table represents the version.

*1: The valuable dot system, or many-valued dot system, enables the

printer to freely fire three different sizes of dots (normal, middle, and small dots) in one raster. In other printers, if the super micro dot mode is once selected through the printer driver, the printers prints only in the selected mode until the current print data is completed. However, the valuable dot system of this printer enables the printer

Product Description Component Layout 37

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EPSON Stylus Color 980 Revision A

IC5(D-RAM)

IC4(One-time PROM)

CN15

IC3(E05B60)

CN1

CN2

IC2(E05B59)

CN4

CN5

IC1(CPU:H8S)

CN6

(IC11) PF Motor Driver

(IC12) CR Motor Driver

Thermistor (detects temperature

CN13

CN10

CN- 11

CN- 16

CN- 12

CN14

Heat Sink

of the heat sink)

Q5 (upper), Q6 (low er) Charging/Discharging driver

for driving the black nozzles

CN9

Q3 (upper), Q4 (lower)

Charging/Discharging driver for driving the color nozzles

CN8

Thermistor (detects temperature on the printhead board)

IC16 (upper), IC15 (lower) Head

re-driver

IC8(Timer & EEPROM)

Lithium Battery

IC13 (upper), IC14 (lower)

ASF Motor Driver

Figure 1-11. C380 Main Board

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EPSON Stylus Color 980 Revision A

(

)

1.7.3 C265 PSB/PSE Board

There are two types of the C265 power supply board as listed below.



C265 PSB board:For America, Japan, part of South east Asia



C265 PSE board:The rest of all regions

W ARNING

Never touch the heat sink (radiation plate) on the Q1 with your bare hands as it is not insulated. Otherwise, you will get an electrical shock.

The C265 PSB/PSE board uses the switching regulator system. Since the C265 PSB/PSE board uses the power switch on the secondary side, it keeps applying voltage to the primary side across the T1. Especially, the heat sink to which the Q1 is attached can not be insulated due to the circuit’s formation. Therefore, to avoid an electrical shock, be careful not to touch the heat sink and other metallic parts simultaneously while troubleshooting.

IC 51(+5V regulator)

D 51(D iode)

CN3

CN2

CN1

F1(Fuse)

C 1(N oise cut capacitor)

T1(Trans)

D 55(D iode)

N ose cut reactance

Danger!

Q 1(FET)

C 11(for sm oothing)

Figure 1-12. C265 PSB/PSE Board

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EPSON Stylus Color 980 Revision A

1.7.4 C265 PNL Board

The C265 panel board is composed of the three switches and four LEDs.

LED 3

LED 1

SW 2 SW 1

LED 2

CN1

Figure 1-13. C265 PNL Board

LED 0

SW 0

1.7.5 C265 Relay Board

The C265 relay board is installed to relay the following with connectors:



Power for driving motors and sensors



Control signals

If any of the connectors is connected to a wrong position during assembly, the printer shows a fatal error at power on.

Carriage home position (CRHP) sensor

Carriage (CR) Motor

CRH PE ASF

M/C

RED

WHT

M/C

BLK

Pump/ASF Motor

Paper Feed (PF) Motor

Connector from the CN11 on the C380 Main Board

Connector from the CN12 on the C380 Main Board

Connector from the CN10 on the C380 Main Board

Connector from the CN16 on the C380 Main Board

M/C

Control Panel

ASF Sensor

PE Sensor

Solenoid (Switches ASF/PUMP mechanism)

Connector from the CN15 on the C380 Main Board

Figure 1-14. C265 Relay Board

Product Description Component Layout 40

Page 45

OPERATING PRINCIPLES

CHAPTER

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EPSON Stylus Color 980 Revision A

2.1 Overview

This chapter describes the operating principles of the printer mechanism and electrical circuits.

2.2 Printer Mechanism Operating Principles

The EPSON Stylus Color 980 has black and color heads united in one unit which includes a total of 480 nozzles: 192 nozzles for black (96 nozzles x 2) and 96 nozzles for each color. This printhead enables the printer to print 3 lines by one pass at 10-cpi printing. Also, new ASF/ pump switching mechanism offers higher throughput with quick feeding motion at continuous printing by combining the trigger solenoid and independent pump/ASF motor. Production of PTS signal using the encoder belt also enables the printer to improve printing accuracy, detect paper jam in the CR operational range, and print during acceleration/deceleration (on normal paper / 360 x 360 dpi only).

See Figure 2-1 for the printer mechanism block diagram.

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EPSON Stylus Color 980 Revision A

PF drive gear (high-precision gear)

H igh-precision pinion

PF m otor

Flashing position (the 80th colum n side)

PTS encoder

Paper eject sub roller

Black I/C detection lever

C olor I/C detection lever

C R unit

U nited printhead for black and color

Tim ing belt

Cap

V a lv e fo r c a p p in g

AS F sensor (for phase detection)

ASF cam

A S F d riv e s h a ft

P a p e r lo a d r o lle r s

PE (Paper End) sensor

Pum p/ASF m otor

AS F solenoid (for switching the AS F, pum p gear trains)

Pum p

C R H P sensor

PF roller (pow dery-coated roller)

C R guide shaft

Encoder belt

C R m otor

Figure 2-1. The Stylus Color 980 Printer Mechanism Block Diagram

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EPSON Stylus Color 980 Revision A

2.2.1 Carriage Mechanism

As shown in Figure 2-1, the carriage unit with the printhead on it moves right and left, depending on the rotational direction of the CR (Carriage) motor. Table 2-1 shows the CR motor specifications.

Table 2-1. CR Motor Specifications

No. Item Specifications

1 Motor Type 4-phase / 200-pole / HB-type stepping motor

2 Drive voltage 42 VDC

3 Coil resistance 5.8

4 Drive mode Bipolar constant current drive

The CR unit position is always memorized and controlled by the CRHP (Carriage Home Position) sensor. This sensor confirms the CR position to renew the memory at the following timing:



When power is turned on / off



When a head cleaning operation, including initial ink charge, is performed.



When the printer returns to a ready status because the printer has executed print job or receives no data for one second or more.

See Table 2-2 and Table 2-3 which show the CRHP sensor specifications and CRHP sensor switch mode, respectively.

5% (Applied to the driver)

Ω

10%

Table 2-2. CRHP Sensor Specifications

No. Item Specifications

1Type

2 Drive voltage 5 V ± 5%

3 Collector resistance 30 VDC or less

Photo-electrically transfer system (SHARP GP1S73P2)

Table 2-3. CRHP Sensor Switch Mode

CR Position Switch mode Sensor output

Within the CRHP range

Off the CRHP range Close 2.4 VDC or more

Open 0.7 VDC or less

If this sensor is defective or does not work, it does not detect the carriage while the carriage is in the home position seek mode. In this case, the printer cuts off electricity to the CR motor and shows a fatal error.

Like the Stylus color 900, the Stylus color 980 also uses a linear encoder to obtain secure carriage movement and accurate print timing. The linear encoder reads slits on the encoder belt (linear scale) above the timing belt to control the carriage. See Table 2-4 for the linear encoder specifications.

Operating Principles Printer Mechanism Operati ng Principles 44

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EPSON Stylus Color 980 Revision A

Table 2-4. Linear Encoder Specifications

No.

1 Type Radiative Incremental encoder module

2 Drive voltage 5 VDC ± 5%

4 Minimum step 1/180 inch (increment of the lines on the linear scale)

Item Specifications

Output waveform

Response frequency

Phase A/B 2-channel digital output (TTL level)

20 KHz

The ASIC (IC2) reads the linear scale (increment: 1/180 inch) and internally divides data by 8. The read information is used to produce basic drive frequency for 2880-dpi trapezoidal waveform production. If the encoder is defective or in an undetectable condition, the printer generates a fatal error immediately after power on. This error occurs before the carriage’s home position seeking operation.

Beside detecting the carriage position, the CRHP sensor also serves to determine whether or not the carriage is working properly. If the setting signals (pulses) sent from the encoder do not reach the specified level while the CR is moving in the acceleration / constant / deceleration modes in its operative range, the program consequently assumes that paper is jamming or the carriage is operating irregularly, and shows the paper jam error by bringing up the LEDs of the corresponding combination.

Table 2-5. Ink Cartridge Sensor Specifications

No.

1 Detection type

2 Rated voltage 5 VDC ± 5%

3 Rated current 10 mA

4 Contact resistance 50 m

Item Specifications

Using a micro switch

Ω

Table 2-6. Ink Cartridge Sensor Switch Mode

Cartridge

Absent Open 2.4 VDC or more

Present Closed 0.7 VDC or more

Sensor Status Sensor Output

If the ink cartridge sensor is defective or in an undetectable condition, the printer shows No Ink Cartridge Error immediately after the printer is turned on.

The printer is equipped with 2 accouters used to detect the ink cartridges in the carriage unit driven by the CR motor. The printer, however, is designed to operate the accouters only when both black and color ink cartridges are installed. See Table 2-5 and Table 2-6 for the ink cartridge sensor specifications and ink cartridge sensor switch mode, respectively.

Operating Principles Printer Mechanism Operati ng Principles 45

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EPSON Stylus Color 980 Revision A

2.2.2 Printing Mechanism

The printing mechanism of the printer is all included inside the printhead. The printing method is EPSON-exclusive MACH system, which is used in other EPSON ink jet printers, but the printhead is not compatible with any other printer. See Figure 2-2 for the printing mechanism block diagram.

N o z z le

Cavity

ozzle P late

PZT

Selector

Tem perature detection circuit

N o zzle

Latch circuit

P re Driver

Pulse

D is-charge

Pulse form com m and

Data

Driver

Charge

Latch

Tem perature data

Figure 2-2. Printing Mechanism Block Diagram

The printing mechanism performs printing by applying voltage to the PZT (integrated piezoelectric element) inside the printhead. With the voltage applied to the PZT, the cavity, a tank filled with ink, is pressed by the PZT and ejects ink from nozzles as the result. Unlikely to the illustration, the actual number of the PZT included in the printhead in this printer is 480, the same number as nozzles, and each PZT is independently driven. The steps below describes how the printing mechanism works.

1. Head drive pulse form command signal is output from the ASIC after the printer is turned on.

+42

ASIC

2. Receiving the signal, the Pre-driver outputs the head drive pulse signal to the driver.

3. If no printing data is sent, pulse output from the driver is not applied to the PZT in the printhead: because the transistor on the nozzle selector is not on.

4. If any printing data is sent from a PC, 5 serial data (3 for Y, M, and C, and 2 for 2 rows of black) are sent to the nozzle selector from the ASIC. Each serial data consists of 96 data since each row is composed of 96 nozzles. When these data is all transferred, a Latch signal is output from the ASIC to the nozzle selector after specified period of time.

5. When the Latch signal is sent, a PZT signal is applied to the base side of the transistor via the latch circuit in the nozzle selector.

6. Head drive pulse constantly output from the driver is then applied to the PZT by the pulse output after a set of serial data and the latch signal are all transferred.

7. The PZT drive pulse radiates large heat since it is driven with the basic drive frequency of 32.4 K Hz and also has such a large amount of drive elements as 480 PZT. Therefore, the abnormal temperature detection circuit is included in the nozzle selector to detect temperature of each nozzle so that heat radiation stays under the maximum level. If the circuit detects abnormally high temperature in any nozzle row, the printer regards the condition as an accidental printing malfunction such as dot missing, and it automatically enters the cleaning CL2, the most powerful cleaning cycle. See the sensor descriptions in Chapter 2 for the operations after this cleaning. The printhead also has the thermistor in it to subtly change the voltage level of the drive pulse in accordance with the temperature condition in use.

Operating Principles Printer Mechanism Operati ng Principles 46

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EPSON Stylus Color 980 Revision A

[Nozzle configuration]

See Figure 2-3 for the nozzle configuration of the Stylus Color 980.

#96

#95

#94

#93

#96

#95

#94

#93

360 dpi

180 dpi

#96

#95

#94

#93

#96

#95

#94

#93

R ow A (B lack 1)

R ow B (B lack 2)

R ow C (M agenta)

Row D (Cyan)

Row E (Yellow)

2.2.3 Paper Load Mechanism

The paper load mechanism transports paper set in the hopper in the ASF into the printer. It is operated by the ASF and the pump/ASF motor which drive the ASF. The pump/ASF motor specifications are as shown in Table 2-7.

Table 2-7. Pump/ASF Motor Specifications

No. Items Specifications

1 Type 4-phase / 48-pole / PM-type stepping motor

2 Drive voltage 42 VDC ± 5% (Applied to the driver)

3 Coil resistance 7.0 Ω ± 10%

4 Drive mode Bipolar constant current drive mode

The ASF rotates the semicircular roller once in reverse before transporting paper into the printer. Along with this motion, the cam in the semicircular roller pushes up the return lever. The return lever then bounces up with tension spring force. As the result, some paper which was fallen off the hopper during the previous feeding motion is all aligned and set back in the hopper. This so called paper return operation is performed for each paper feeding motion. Therefore, paper loading accuracy is improved. See Figure 2-4 which shows how the ASF feeds paper.

Figure 2-3. Nozzle Configuration

As shown in the figure, the black nozzles are aligned at 360 dpi (vertical) and the color nozzles are aligned at 180 dpi. In the color printing mode, only “B” row among 2 black nozzle rows is used and the other row “A” is not used. (The same mechanism is used for the microweave printing.)

Operating Principles Printer Mechanism Operati ng Principles 47

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EPSON Stylus Color 980 Revision A

[

]

After a paper loading motion is completed, the semicircular roller rotates in the normal direction to load the top paper in the stack. This operation is enabled by the correct phase of the gears in the ASF, because the timings for the semicircular roller’s contacting the paper surface by the corner (A) and the hopper’s being pushed out must be coincided. The ASF sensor is used to determine the condition whether the phase is correct or not. The transmission system of the ASF sensor detects the condition by catching the position of the cam attached onto the same shaft as the semicircular roller is. See Table 2-8 and Table 2-9 for the ASF sensor specifications and its switch mode, respectively.

Pinch roller

Sem icircular ro lle r

Cam

H opper

R e tu rn le v e r

[R e a d y s ta tu s ]

Separation pad

A c tiv e S ta tu s

Figure 2-4. ASF Paper Load Mechanism

Table 2-8. ASF Sensor Specifications

No.

1Type

2 Collector voltage 30 VDC or less

3 Coil resistance 5 VDC

Item Specifications

Photoelectric transfer system (transmission type)

Table 2-9. ASF Sensor Switch Mode

ASF Position Sensor Status Sensor Output

Home position Open 0.7 VDC or less

Off the home position

Close 2.4 VDC or more

Note that torque from the pump/ASF motor is transmitted to the pump unit depending on the pump/ASF mechanism condition. The rotational directions and corresponding functions are as shown in Table 2-10.

Table 2-10. ASF/Pump Motor Functions

Direction Functions for ASF

Normal rotation (CW)

Reverse rotation (CCW)

• Reverse rotation of the paper loading roller (paper return control)

• Connection to the ASF gear train

• Normal rotation of the loading roller (paper separation, paper loading)

Functions for the ink

system

• Connection to the pump gear train

• Normal rotation of the pump (absorption)

• Releases the CR lock.

• Sets the wiper.

• Reverse rotation of the pump motor

• Locks the CR.

• Resets the wiper.

Operating Principles Printer Mechanism Operati ng Principles 48

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EPSON Stylus Color 980 Revision A

2.2.4 Paper Feed Mechanism

The paper feed mechanism manages constant paper feeding during printing through to paper ejection. Unlike previous models, the PF motor of this printer only drives the paper feed mechanism, having no connection with the carriage lock mechanism nor the pump mechanism. See Figure 2-5 and Table 2-11 for the cross section of the paper feed mechanism and the PF motor specifications, respectively.

Table 2-11. PF Motor Specifications

No. Items Specifications

1 Type 4-phase / 200-pole / HB-type stepping motor

2 Drive voltage 42 VDC ± 5% (Applied to the driver)

3 Coil resistance 8.1 Ω ± 10%

4 Drive mode Bipolar constant current drive mode

For the printer-specific feature, the PF motor pinion transfers torque to the PF drive gear without any transmission gear in between. The gears used for the PF motor pinion and the PF drive gear are very precise. Therefore, note the points below when handling them:

See Table 2-12 and Table 2-13 for the PE sensor specifications and the PE sensor switch mode, respectively.

Table 2-12. PE Sensor Specifications

No.

1Type

2 Drive voltage 5 VDC

3 Collector resistance 30 VDC or less

Item Specifications

Transmission-type photoelectric transfer system

5% (Applied to the driver)

Table 2-13. PE Sensor Switch Mode

Paper

installation

Not installed Open 0.7 VDC or less

Installed Closed 2.4 VDC or more

N otched roller

Switch mode Output voltage

Paper

Actuator

PE sensor

Sub roller

1. Do not touch the gear surface with your bare hands.

P F d riv e g e a r

2. Keep other parts or tools for servicing such as screw drivers away from the gears.

The PE sensor in the paper feed mechanism is used to check the following:

1. During paper loading, checks if the leading edge of the paper from the ASF is correctly transported.

2. Checks if the paper loaded meets the specifications.

Paper ejection

ro lle r

PF (pow dery-coated)

ro lle r

PF m otor pinion

3. Checks if the paper is properly ejected after printing is over.

4. Checks if paper is jamming.

Figure 2-5. Paper Feed Mechanism

Operating Principles Printer Mechanism Operati ng Principles 49

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EPSON Stylus Color 980 Revision A

2.2.5 Pump/ASF Switch Mechanism

The pump/ASF switch mechanism switches the motor’s torque between the paper-loading and the pump-system sides. The pump/ASF motor supplies torque, and a solenoid is used as switching trigger. (Refer to Section 2.2.3 for the pump/ASF motor specifications.) Figure 2-6 shows how the pump/ASF mechanism works when switching to the ASF gear train.

Switching to the ASF gear train]

[

R eduction gear

AS F transm ission gear

Pum p/ASF m otor

Planetary gear set

Figure 2-6 shows the gear condition after switching to the ASF is completed. The steps below describe how the gears move to switch from pump gear train to the ASF gear train.

1. In the pump gear train condition, the gear (3) in the planetary gear set and the pump transmission gear are in mesh.

2. The pump/ASF motor rotates in the normal direction (CW).

3. The whole planetary gear set tries to move up, but the solenoid suppresses it.

4. The solenoid comes on, allowing the whole planetary gear set to move up. At this point, the gear (3) does not rotate, but the motor pinion gear and gear (2) rotate in mesh.

5. The gears (3) and (4) come in mesh and connection to the ASF gear train is fixed when a corner of the solenoid is aligned with the notch in the planetary gear set.

6. Then the gears (4) and (5) are meshed. The gear (5) is connected to the ASF drive gear in the printer mechanism to rotate the roller in the ASF reverse (for paper return mechanism). (Refer to Section

2.2.3 for the paper return mechanism.)

Solenoid

Pum p transm ission gear

Figure 2-6. Switching Operation to the ASF Gear Train

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[Switching to the pump gear train]

Figure 2-7 shows the gear condition after switching to the pump gear train is completed.

AS F transm ission gear

Pum p/ASF m otor

Solenoid

The steps below show how the gears move to switch from the ASF gear train to the pump gear train.

7. In the ASF gear train condition, the gears (3) and (4) are in mesh.

8. The pump/ASF motor rotates reverse (CCW).

9. The planetary gear set tries to move down, but the solenoid prevents it.

10. The solenoid comes on allowing the whole planetary gear set to move down. At this point, the gear (3) does not rotate, but the motor pinion gear and the gear (2) rotate in mesh.

11. The gears (3) and (4) come in mesh, and the connection to the pump gear train is fixed when a corner of the solenoid is aligned with the notch in the planetary gear set.

12. The gear (4) meshes with the pump transmission gear in the printer mechanism to perform CR lock and pump drive operations.

Planetary gear set

Pum p transm ission gear

Figure 2-7. Switching to the Pump Gear Train

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2.2.6 Pump / Carriage Lock / Head Cleaner Mechanism

The pump mechanism operates in accordance with the carriage lock and head cleaner control mechanisms. Figure 2-8 illustrates the process of torque transmission from the pump/ASF motor to each mechanism.

P ressure roller

(le ft)

Unlocked

Locked

In the pum p gear train condition

O n the s a m e s h a ft

P ressure roller

(rig h t)

Clutch

Spacer

C om pression spring

C leaner head

Pum p transm ission gear

Pum p interm ittent gear

Fram e

Figure 2-8. Pump / Carriage Lock / Head Cleaner Mechanism

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EPSON Stylus Color 980 Revision A

The steps below explain the process of driving each mechanism.

1. The precondition for driving the pump, carriage lock, and head cleaner is that the pump/ASF switch mechanism is switched to the pump gear train. (Refer to Section 2.2.6.)

2. Drive from the pump/ASF motor is transmitted via:

1) pump transmission gear (black) (black)

→

3) pressure roller (right) (pump drive roller: flesh color)

→

2) pump intermittent gear

3. Along the way, the drive is also transmitted to the carriage lock lever. The carriage lock lever is released with normal rotation of the

Separator

pump/ASF motor and set with reverse rotation of the motor.

4. Once the drive is transmitted to the pressure roller (right), all parts used to drive the pump begin to act. The Stylus Color 980 has the right and left pressure rollers. However, since the black and color heads are included in one unit, the absorption tube is split in the middle so the 2 pumps can absorb ink in the printhead. See Figure

CCW

2-9 which explains the ink absorption process.

5. The cleaner head is located between the pump frame and the cleaner head drive roller, and a compression spring is set between the cleaner head and the cleaner drive roller. Since the cleaner head has a protrusion (marked with a red circle in Figure 2-8) on it

Figure 2-9. Ink Absorption Process

on the roller side, it moves back and forth along with the roller rotation. However, if the roller rotates faster than the specific level, it rotates alone because tension of the compression spring does not work any more.

Operating Principles Printer Mechanism Operati ng Principles 53

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2.3 Electrical Circuit Operation Principles

The Stylus Color 980 consists of the following circuit boards:



C380 main board



C265 PSB/PSE board



C265 Panel Board

2.3.1 C265 PSB/PSE Power Supply Board

This section explains the operating principles of the C265 PSB/PSE board, in order.

AC power supply voltage is supplied from the AC power socket. Then the fuse (F1) limits the incoming current of the AC voltage to avoid damaging the C380 main board and C265 PSB/PSE board. On the other hand, TH1 and TH2 serve to convert surplus input voltage into heat energy.

The input voltage is next input to the RLC parallel circuit (a filter circuit), for higher harmonics absorption. This operation keeps the higher harmonics in the AC power out of the printer, and also prevents leakage of higher harmonics generated in the printer.

After noise is removed, the AC voltage goes through the full-wave rectification circuit. The minus component of the alternate wave is eliminated as the result.

Then the voltage is smoothed by the electrolysis condenser (C11) for stabilized DC voltage, and the current is applied to the primary side of the transformer (T1).

The current, however, does not flow into the primary side of the transformer (T1) if the main switching FET (Q1) located in the primary side is off. The Q1 comes on when the voltage is applied to the gate through the R28, a starting resistor, when the printer is turned on. While the Q1 is on, current does not flow into the secondary side; because a reverse-characteristics diode is used to connect to the secondary side.

The transformer (T1) is gradually charged with the current. When it is full and not charged any more, the gate voltage of the Q1 starts going down gradually. At this point, C13 abruptly pulls in the gate voltage of the Q1 to turn the Q1 off.

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EPSON Stylus Color 980 Revision A

Once the Q1 is off, the energy charged in the primary side flows into the secondary side all at once. This occurs because the energy transfers in the same direction as the reverse diode characteristics with the Q1 off.

The secondary side of the transformer (T1), which has the specified numbers of coiling lines for 42 VDC production, creates the 42 VDC out of the energy led to the secondary side by the electromagnetic induction. The secondary side has numbers of stabilizing circuits to output stabilized voltages, as listed below:



Smoothing circuit: Since the energy led from the transformer (T1) to the secondary side by the electromagnetic induction is alternating current, it must be smoothed by the electrolysis condensers C51 and C52 to be direct current.



+42 V line constant voltage control circuit: 7 zener diodes (ZD51, ZD81 - ZD86) connected in series monitors +42 V status used to drive various mechanisms. To keep the output voltage at a constant level, the circuit controls the on/off timing of the Q1 slightly according to the signals fed back from the photocoupler (PC1).

+5 VDC by changing output pulses in spite of diverse input voltage levels. This operation serves as a constant voltage control circuit.



+5 V line overvoltage protection circuit: ZD53 in the circuit monitors the +5 V line for overcurrent. In case the voltage rises to 7 V for reasons such as a defective board, the circuit shuts the Q1 gate in the same process as the +42 V line overvoltage protection circuit follows.



Voltage drop delay circuit at power off The C265 PSB/PSE board uses the secondary switch that includes the delay circuit. The delay circuit allows the printer to complete the power off operation properly even though the printer is turned off while it is printing. A normal power off operation by the user is monitored by the C380 main board. When it detects a power off, the program immediately starts the power-off sequence, capping the printheads, and drops the power. The electrolysis condenser (C84) continues to operate to allow the printer to execute this proper power off sequence.

See the following page for the electrical circuit diagram.



+42 V line overvoltage protection circuit: This circuit includes 2 zener diodes (ZD52, ZD87) connected in series. It monitors the +42 V line used to drive various mechanisms to detect abnormal rise in the voltage level caused by a defect in the circuit. If the output voltage rises to +48 V, the signal is input to a port of one of the 2 channels in the photocoupler (PC1) to completely cut off the Q1 operation. Once this circuit is active, a normal flow does not recover unless the printer is turned off and back on.



+5 VDC production circuit: L4960 (IC51) produces +5 VDC out of +42 VDC. Since the IC internally operates PWM control, it can always produce constant

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In c o m in g c u rre n t p r o te c tio n

H igher harm onics absorption

R1 C1

TH1, TH 2

In ru s h c u rre n t te m p e ra tu re c o n v e rs io n

R28

300 K

Starting resistor

Main S w itc h in g

Q31

C13

Feed back

Feed b a c k

L1 C3,C4

Sm oothing

DB1

Full w ave rectification

+5 V R egulator

L4960

(IC 51)

OSC

D51

Sm oothing

C 51,52

ZD 51, ZD 81-86

H igher harm onics absorption

Sm oothing

L51

Out

C54

GL +5V /1.5A +5 PSC +5 +5 GL

5V line overvoltage protection

ZD53

ZD52

+42V/0.8A +42 +42 +42 GP

ZD87

PC1

C84

C om es on w hen abnorm al. Photo C oupler

42 V line constant voltage control

Voltage drop delay circuit at pow er off

Q84

4 2 V lin e o v e rv o lta g e p ro te c tio n

Figure 2-10. C265 PSB/PSE Board Circuit Block Diagram

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2.3.2 C380Main Board

See Figure 2-11 for the C380 main board block diagram.

C90A09

(IC1)

CN4 USB

CN13 FAN

CN16 ASF Solenoid

PROM (IC4)

D-RAM (IC5)

CRU1

M-RAM (IC6)

E05B59

(IC2)

A3957(IC13)

A3957(IC14)

CXA2128(IC15)

CXA2128(IC16)

E05B60

(IC3)

T93C56

(IC7)

Timer

/RST

74LV161284 (IC9)

CN12 ASF motor

CN8 Head 1

CN9 Head 2

CN15 Sensors

CN2 Type B I/F

CN1 Centronics

LB1847(IC11)

LB1847(IC12)

RTC9810

(IC8)

CN10 PF motor

CN11 CR moto

Figure 2-11. C380 Main Board Block Diagram

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The following tables list the major components on the C380 main board and their functions.

Table 2-14. Major Components on the C380 Main Board (1/2)

Component Functions

• A EPSON’S CPU.

CPU:

ASIC 1: (E05B60: IC3)

ASIC 2: (E05B59: IC2)

PROM/MROM:

D-RAM:

Timer IC: (RTC9810: IC8)

• Performs high-speed data processing running at 24.0 Mhz with an external transmitter.

• Bus width is 16-bit.

• Controls all interfaces but USB.

• Monitors the signal from each sensor.

• Controls printheads, motors, ASF solenoid, cooling fan, USB I/F, and EEPROM.

• For PROM, either one-time PROM or Mask ROM is used. Specifications vary depending on the destinations, as shown below:

• PROM size: 16 M bit

• Contents: Unattached

• Bus width: 16 bit

• PROM size: 16 M bit

• Contents: 16 M bit

• Bus width: 16 bit

• Manages the various buffers and work area.

• Bus width is 16 M bit.

• Counts total power off time of the printer, which offers the basis for determining the cleaning type to be performed at the next power on. Power is supplied by an external button-cell battery (a lithium battery). This IC also serves to produce reset signals connecting to each major IC, such as CPU, ASIC1, ASIC 2, and motor drive ICs. The head driver ICs (CXA2128 x 2: IC15 and IC16) individually produce a reset signal when detecting abnormal voltage so the printhead can stop in the proper sequence.

Table 2-15. Major Components on the C265 Main Board (2/2)

Component Functions

• The LB1847 (IC11 and IC12) is used to drive PF motor and CR motor and enables 4W1-2 phase excitation mode for the first in EPSON line. This control system, called micro stepping, materializes the control of the

Motor driver IC (LB1847: IC11, 12) (A3957: IC13, 14)

Head driver IC (CXA2128 x 2: IC15,

16)

carriage vibration during printing and improvement of accuracy in paper feeding on the hardware basis.

• The A3957 (IC13 and IC14) used to drive Pump, ASF motor also supports the 4W1-2 phase excitation mode on the hardware basis, but differs from the former IC in the point that the IC13 and IC14 individually excite the phase A and B.

• The head driver ICs, directory attached to the board, consist of two separate circuits; charging circuit and discharging circuit, to produce trapezoidal waveform. This IC creates the trapezoidal waveform by combining the signals input from the input port E05B59 (IC2) of the IC. This is performed to change the characteristics and voltage levels of charging and discharging, and the trapezoidal waveforms specific to normal dot print and micro dot print are produced as the result.

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The control circuits are explained in detail below.

[Combined (reset circuit + timer) circuit]

A combined circuit RTC9810 manages both reset signal production and RTC (Rear Time Controller). It produces reset signals by monitoring the both 5 VDC line (input to Pin 7) and 42 VDC line (input to Pin 9). When the voltage level for the 5 VDC line drops to 4.3 V, or the voltage level for the 42 VDC line drops to 35.5 V, the combined circuit outputs a reset signal from Pin 2. When the printer is turned on / off or detects abnormal voltage level, the IC sends the reset signal to the following ICs to avoid printer damage caused by run-away of the logic line and abnormal operation of driver systems. Also, to let the motor driver IC execute its

+42 V

R18 107 K

Devision

R20 10 K

/RST

Dropsto35V

+5 V

BAT1

/RST

Speed up diode

job properly, the reset signal is once input to the convertor (setting current production IC) on the main board to stop motors in the correct sequence. On the other hand, the timer control is done by counting the operation of the oscillator circuit, and the printer’s power off time can be confirmed based on the timer at the next power on operation. Also, this count data is used to manage the timer for the operation such as periodical flashing during power on time as well as power off time. While the printer is on, the printer supplies 5 V (input to Pin 7) to operate the internal oscillation circuit, however, when the printer is turned off, the external button-cell battery (a lithium battery) immediately starts supplying voltage (3 V) to the Pin 8.

VIN

VDD

RTC9810(IC8)

3.0 V

VBK

GND

DATA

SCLK

/RST

2456

TDATA

/RST

TCE

TCLK

252627

C90A09(IC1)

M62383(IC17)

/RST

D/Axx D/Axy D/Ayx

E05B59(IC2)

3 8

E05B60(IC3)

VREF1 VREF2

LB1847(IC11)

LB1847(IC12)

REF

A3957(IC13)

A3957(IC14)

Figure 2-12. Reset/timer combined circuit

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[Sensor circuit]

The sensors attached to the printer are as described in the following pages. They are basically divided into 2 major parts: 1) abnormal temperature detection part and 2) mechanism status detection part. The former is controlled by the CPU and the latter is controlled by 2 ASICs; E05B59 (IC2) and E05B60 (IC3).

Thermistor on the heat sink on the main board

Location (TH 1) on the board

CN8

19 21 20

1 2 9

HDSAMI

HPDSAMI THM

ANODE1

ANODE2 ANODE3 ANODE4

CN9

ANODE5

C90A09(IC1)

AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0

112 111 110 109 108 107 106 105

1) Abnormal temperature detection part

This abnormal temperature detection part is composed of 3 thermisotrs and the temperature detection circuit which is included in the nozzle selector inside the printhead. The CPU’s analog ports used for temperature detection and their functions are as follows:

Row A

Printhead surface

Row B

Row C

Row D

Row E

Inside the printhead

THM

Nozzle Selector

Figure 2-13. Sensor Circuit Block Diagram (Abnormal Temperature Detection Circuit)

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

AN7 (Pin 112) The TH1, located between 2 pre-driver ICs (the head driver ICs; IC15 and IC16) on the main board, monitors temperatures around the board. A Pre-Driver IC is exclusively developed to create intricate trapezoidal waveforms which vary depending on the model. It uses +42 VDC and high frequency to produce trapezoidal waveforms. Therefore, if any relevant trouble has occurred, it is assumed that the driver is overheated. The TH1 works to detect this kind of unexpected rise in temperature at an early stage and stop printing.



AN6 (Pin 111) Four power transistors (Q3 - Q6) used for trapezoidal waveform production are directly attached with screws to the large heat sink (a radiation plate) on the main board. Since the printhead supported by the Stylus Color 980 supports very high driving frequency (28.8 KHz), higher than ever, and a large amount of PZT, radiation from the discharging transistor used for trapezoidal waveform production is huge. Therefore, the cooling fan on the board forces out heat around the radiation plate. A thermistor fixed on the radiation plate sends signals to the AN6 port of the CPU to allow the CPU to manage the cooling fan’s on/off operation.



AN5 (Pin 110) The electrical signal input to this port is a temperature signal sent from the thermistor included in the printhead unit. The function of this thermistor is, same as before, to precisely detect temperatures around the printhead and feed back information to the C380 main board. Based on the fed back information, the printer manages subtle change in the voltage level of the head drive trapezoidal waveform, and also can eject the correct amount of ink as it is aimed at any temperature.



AN4-ANO (Pins 1, 2, 9, 10, 4) The nozzle selector IC is attached inside the printhead. It determines which nozzle is used to fire ink according to serial data sent from the ASIC (IC2). A temperature detection circuit included in the nozzle selector detects the temperature of each actuator in the 5-row PZT array. This must be performed to avoid false firing. If the printhead continues the firing motion, but no ink is ejected, the temperature inside the printhead rises to 100

C and the printhead might be damaged as a result. To prevent this from happening, the abnormal temperature detection circuit is included in the nozzle selector circuit. The followings are possible reasons for false firing:

1. If an ink cartridge has been removed before its life end and is installed again, the ink consumption counter value is upset, and the counter fails to detect the actual remaining ink level. This wrong operation dangerously causes the printhead to keep firing without any ink remaining in the cartridge.

2. Serious dot missing can also cause false firing. In this case, there is enough ink in the cartridge, but it does not properly flow into the head because of a clogged nozzle(s). If the PZT is driven without any ink flow, heat generated by the nozzle movement can not be released, and this makes the temperature around the head abnormally high.

3. Strong vertical impact applied to the head causes a considerable amount of ink around the nozzle to leak all at once as well as damages meniscus on the head surface. As a result, ink does not properly eject at the next printing and ends up in a false firing status.

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False firing is detected in the following conditions, and the printer handles it as described below.



False firing detection timing: If any of the 5 channels, which are monitored by the abnormal temperature detection circuit in the nozzle selector, reaches 100

C, the printer stops printing and automatically begins the cleaning cycle. In this case, the printer runs the most powerful cleaning cycle. The particular address bit called abnormal temperature detection flag is reset at this point.



Process after detection: The printer does not resume printing until the temperature around the PZT recovers to the tolerable range. In case the printer detects the same abnormal condition again, it indicates an ink-end error to urge the user to replace the cartridge considering the following possible reasons:

1. The currently installed ink cartridge is far beyond its useful

life (6 months). Ink, in this condition, does not eject properly and results in a false firing. When a new cartridge is installed, the problem is solved.

the more the cartridge is removed/installed, the more bubbles are formed, and the printhead can not eject ink properly and false firing occurs.

2. The cartridge installed has been repeatedly removed and

then installed again several times. With this mis-handling of the cartridge, the ink consumption counter can not properly describe the actual remaining ink level, and a false firing occurs as a result. The solution in this case is also replacing the ink cartridge with a new one. Furthermore, If an ink cartridge is removed from the printer, air comes in and bubbles inside the cartridge. Unlike a new cartridge, the ink inside the removed cartridges is not deaerated, so the bubbles inside can not be absorbed into the ink due to the ink’s saturated condition. For this reason,

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[Mechanism status detection part]

+5 +5

CN8

ENCB

LS1

E05B 59(IC 2)

E05B 60(IC 3)

ENCA

COB

COC

SW C0

SW A1

SW A0

PSC

109

110

137

136

135

CN9

LS2

COB

COC

CN15

ASF

CN5

PSC

Figure 2-14. Sensor Circuit Block Diagram (Mechanism Status Detection Part)

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

Encoder: This sensor increases accuracy of ink ejection timing. Irregular movement of the carriage, usually caused by a paper jam, can be also detected based on the change in input signals of this sensor. Carriage movement is monitored by running the encoder belt (with lines printed on it with increments of 180 dpi) between the photo sensor attached to the carriage. Also, if the printer receives a large impact during printing, the input signal cat not be properly read, and in some cases print quality decreases with a dot missing problem. This is because this printer forms one dot by producing trapezoidal head driving waveform based on the cycle determined by the signals sent from the encoder.



Ink cartridge sensor: If the printhead drives without any ink cartridge installed (= false firing), it damages the printhead unit. Also, compared with other printers, this printer uses the largest number of PZT and accordingly releases more heat. For this reason, the ink itself inside the cartridge serves to lower the temperature inside the cartridge, and black and color ink cartridges can be separately detected to avoid false firing. Detection process: An ink cartridge is detected when the ink cartridge being installed activates the actuators, which then pushes the micro switch.



CR home position sensor: When the printer is turned on, the CRHP sensor confirms the CR is in the home position during the home position seeking sequence. Then the printer can determine the CR control afterwards. The printing column position is also confirmed based on the signals from the sensor. Detection process: The carriage is detected when the flag interrupts the light beam in the photo sensor which is located on the right end of the printer mechanism.



PE (Paper End) sensor: The PE sensor detects the following conditions:



Whether or not paper is set at power on.



Whether or not paper is properly fed from the ASF with the paper feed command.



Whether or not the printer properly ejects a page of printed paper after rotating the PF (Paper Feed) motor with the predefined distance. Detection method: A photo sensor is used to detect the actuator’s motion; the actuator is pushed/released by the leading/rear edge of the paper.



ASF sensor: Various parts in the ASF are engaged in the phase that is designed to feed paper at the appropriate timing. If the timing is wrong, mismatch occurs between paper feeding by the ASF and paper transportation for printing, and non-feeding or paper jam will occur. Therefore, this printer monitors the sensor condition at power on and before and after paper is fed/ejected according to the pump/ ASF motor’s rotational distance.



Power on/off detection: Unlike primary-side switch type products, ASIC E05B60 (IC3) on the C380 main board is used to monitor the power on/off operation instead of any sensor. When the power switch on the control panel is turned off, the change from 5 V to ground level is detected at the Pin 33 of the IC3, and the program starts the power off sequence with this change. Power used during the sequence is supplied by the electrolysis condenser C84 in the voltage drop delay circuit in the secondary side of the C265 PSB/PSE board. The electrolysis condenser continues to supply power until all electric charge inside is completely discharged.

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2.3.3 CR Motor Driver Circuit

An exclusive motor drive IC (LB1847: IC12) enables 4W1-2 phase excitation on the hardware basis. A micro stepping motor is used for the CR motor to move the carriage accurately and also to improve printing accuracy by minimizing the motor’s vibration during printing. Figure 2-15 shows the CR motor driver circuit block diagram.

+42 +42

+42

E05B 59(IC 2)

Phase A setting current signal (16 patterns)

Phase B setting current signal (16 patterns)

Phase CR A (B ) sele ction signal

Phase CR A (B ) ENB (perm ission)

signal

M otor sub control

M D signal

Phase A constant

at chopping

DECAY signal 1

DECAY signal 2

N o t u s e d

CRIA0 CRIA1 CRIA2 CRIA3

CRIB0 CRIB1 CRIB2 CRIB3

CRPHAA CRPHAB

CRENBA CRENBB

CRCTL0 CRCTL1 CRCTL2 CRCTLR CRCTLS

147 148 149 150

163 162 161 160

143 170

144 169

171 172

173 174

175

N.C.

IA 1

IA 2

IA 3

IA 4

IB 1

IB 2

IB 3

IB 4

PHASE1

PHASE2

ENABLE1

ENABLE2

VREF1

VREF2

CR1

CR2

MD DECAY1

SECAY2

LB1847(IC 12)

OUTA

OUT-A

OUTB

OUT-B

VBB

VCC

GND

CN11

+42

M 62383(IC 17)

D/Axy

OUT A

OUT-B

OUT-A

OUT B

Figure 2-15. CR Motor Driver Circuit Block Diagram

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Unlike previous EPSON ink jet printers, the number of the phase excitation input ports in the motor drive IC of this printer has increased to 8. The previous micro step system used total of 4 phase excitation input signals for both phases A and B. (Stylus COLOR, Stylus PRO series, and Stylus PRO XL series are exceptional, since they transfer 4bit serial data from ASIC to the motor driver.) This is because the micro stepping was controlled by the software only. On the other hand, LB1847 enables the 4W1-2 phase excitation using the hardware and is equipped with the necessary number of input ports (8 ports) for current setting signals. Among these input ports, 4 ports are allocated to each phase, A and B. Therefore, 16 types of current setting data can be constantly sent to the driver IC. The LB1847 controls the micro stepping system by exciting the corresponding phase based on the combinations of the setting signals sent from the ASIC.

Table 2-16 shows the excitation modes used for the CR motor and their usage.

Table 2-16. CR Motor Excitation Mode and Usage

Excitation mode

2-2 phase drive LQ print mode 1/120” (0.212 mm)

1-2 phase drive Not used 1/240" (0.106 mm)

W1-2 phase drive

2W1-2 phase drive

4W1-2 phase drive

Usage Minimum step

Sort skipping SLQ print mode

Wiping Capping

Moving from the capping position

Uncapping

1/480” (0.053 mm)

1/960" (0.026 mm)

1/1920" (0.013 mm)

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2.3.4 PF Motor Driver Circuit

Motor drive exclusive IC (LB1847: IC11) enables 4W1-2 phase excitation on the hardware basis. A stepping motor is used for the PF motor to move the carriage accurately and also to improve printing accuracy by minimizing the motor’s vibration during printing. Figure 2-16 shows the PF motor driver circuit block diagram.

+42 +42

+42

E05B 59(IC 2)

Phase A setting current signal (16 patterns)

Phase B setting current signal (16 patterns)

Phase CR A (B ) sele ction signal

Phase CR A (B ) ENB (perm ission)

signal

M otor sub control

PFIA0 PFIA1 PFIA2 PFIA3

PFIB0 PFIB1 PFIB2 PFIB3

PFPHAA PFPHAB

PFENBA PFENBB

PFCTL0 PFCTL1 PFCTL2 PFCTLR PFCTLS

140 139 138 137

133 134 135 136

142 128

141 129

124 127

125 126

123

N.C.

IA 1

IA 2

IA 3

IA 4

IB 1

IB 2

IB 3

IB 4

PHASE1

PHASE2

ENABLE1

ENABLE2

VREF1

VREF2

LB1847(IC 11)

OUTA

OUT-A

OUTB

OUT-B

VBB

VCC

GND

M 62383(IC 17)

D/Axx

CN10

+42

PFF

PF -A

PF B

PF-B

Figure 2-16. PF Motor Driver Circuit Block Diagram

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Unlike the previous EPSON ink jet printers, the number pf the phase excitation input ports in the motor drive IC of this printer has increased to 8. The previous micro step system used total of 4 phase excitation input signals for both Phase A and Phase B. (Stylus COLOR, Stylus PRO series, and Stylus PRO XL series are exceptional, since they transfer 4-bit serial data from ASIC to the motor driver.) This is because the micro stepping was controlled by the software only. On the other hand, LB1847 enables 4W1-2 phase excitation using the hardware and is equipped with the necessary number of input ports (8 ports) for current setting signals. Among 8 input ports, 4 are allocated to each phase, A and B. Therefore, 16 types of current setting data can be constantly sent to the driver IC. The LB1847 controls the micro stepping system by exciting the corresponding phase based on the combinations of the setting signals sent from the ASIC.

Table 2-17 shows the excitation modes used for the PF motor and their usage.

Table 2-17. PF Motor Excitation Mode and Usage

Excitation phase

2-2 phase drive Not used 1/720"(0.035 mm)

1-2 phase drive

W1-2 phase drive Not used 1/2880"(0.009 mm)

2W1-2 phase drive Middle-speed feed 1/5760"(0.004 mm)

4W1-2 phase drive

Usage Minimum step

Fast feed 1 Fast feed 2 Special fast feed

Normal feed Micro adjust feed Slow feed

1/1440"(0.018 mm)

1/11520"(0.004 mm)

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2.3.5 Pump/ASF Motor Driver Circuit

Like for the CR motor and the PF motor, A3957 (IC13, IC14) enables the pump/ASF motor to perform 4W1-2 phase excitation on the hardware basis. Figure 2-17 shows the pump/ASF motor driver circuit block diagram. Among 2 drivers, IC13 and IC14 drives the Phase A and Phase B, respectively.

E05B 59(IC 2)

Phase A setting current signal (16 patterns)

Phase A specified

signal

Phase B setting current signal (16 patterns)

Phase B specified signal

ASFIA0 ASFIA1 ASFIA2 ASFIA3

ASFPHAA

ASFIB0 ASFIB1 ASFIB2 ASFIB3

ASFPHAB

69 68 62 64 63

81 80 72 74 73

A3957(IC 13)

20 13

A3957(IC 14)

20 13

REF

OUTA

OUTB

OUTA

OUTB

+42

+42 +42

M 62383(IC 17)

D/Axy

+42

CN12

ASF A

ASF -A

ASF B

ASF-B

Figure 2-17. Pump/ASF Motor Driver Circuit Block Diagram

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Table 2-18 shows the excitation modes used for the pump/ASF motor and their usage.

Table 2-18. Pump/ASF Motor Excitation Mode and Usage

Excitation phase

2-2 phase drive

1-2 phase drive Micro absorption 1/1440" (0.018 mm)

W1-2 phase drive Not used 1/2880" (0.009 mm)

2W1-2 phase drive

4W1-2 phase drive

Fast absorption Semi-fast absorption Fast feed

Normal absorption Normal feed

Constant drive Slow feed Slow absorption

Usage Minimum step

1/720" (0.035 mm)

1/5760" (0.004 mm)

1/11520" (0.004 mm)

2.3.6 Printhead Driver Circuit

The printhead driver circuit consists of 2 circuits: the common voltage production circuit (a trapezoid waveform production circuit) on the C380 main board and nozzle selector on the printhead. The pre-driver CXA2128 (IC15, 16) produces trapezoid waveform and the transistors (Q3 - Q6) output it. Unlike previous products, data (serial data) is independently transferred to each nozzle row to enable reduction in data latch time required to form one dot, while nozzle selection is performed by ASIC, which sends serial data directly to the nozzle selector on the printhead synchronizing with the clock signal. (A block diagram and the circuit diagram for the nozzle selector are not included in this manual.) The printhead driver circuit block diagram is shown in Figure 2-18.

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C X A 2128(IC 15)

110

109

107

102

100

101

108

COC

COB

HLAT

HSOCLK

HSO_Y

HSO_M

HSO_C

HSO_B1

HSO_B2

HINV

E05B 59(IC 2)

HW A0 HW A1 HW A2 HW A3

HW CLK1

HW CLK2

/H W F L R

HW SDATA

HW SLC

/H W S L A T

114

113 112 111

120

119

118

115

116

121

CLK1

CLK2

/FLOOR

DATA

DCLK

C X A 2128(IC 16)

A2 A3

CLK1

CLK2

/FLOOR

DATA

DCLK

VCC45

VC C 45_2

NPNB

PNPB

VCC45

VC C 45_2

NPNB

PNPB

C harging/discharging circuit for black nozzles

CPU(IC1)

AN0

110

AN5

AN1 AN2 AN3 AN4

C harging/discharging circuit for color nozzles

105

106

107

108

109

+42

21 20 17 15

9 7 6

CN8

VHV

COM a

COM b

COM c

COM d

COM e

CN9

Black nozzle row s

C o lo r n o z z le r o w s

H ead tem perature

THM

detection circuit

ANO DE1 ANO DE2 ANO DE3 ANO DE4

ANO DE5

COC COB

I/C detection signal

LAT CLK Y M C B1

- D a ta la tc h s ig n a l

- N ozzle selection signal

- C lock signal

B2 IN V

C o lo r n o z z le r o w

AN data (tem perature detection for each color)

Trapezoid w aveform reverse signal

Figure 2-18. Printhead Driver Circuit Block Diagram

Operating Principles Electrical Circuit Operation Principles 71

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EPSON Stylus Color 980 Revision A

2.3.7 Cooling Fan Driver Circuit

Since this printer drives a large number of PZT elements (total of 480 nozzles) with a high drive frequency (maximum 32.4 K Hz), heat radiated around the printheads and the trapezoid waveform production circuit on the C380 main board is considerably large compared to other printers. Therefore a thermistor is attached to the heat sink fixed to the trapezoid waveform production transistors to prevent the trapezoid waveform production transistors (Q3 - Q6) and adjacent HIC from operating abnormally due to high temperature. When the thermistor detects abnormally high temperature, the printer turns the cooling fan on to forcibly blow out heat from the lower case. Figure 2-19 shows the cooling fan driver circuit block diagram. Table 2-19 shows how the signals output from the ASIC and corresponding fan conditions.

+42

6.8

E05B 59(IC 2)

176

FAN

Figure 2-19. Cooling Fan Driver Circuit Block Diagram

D rops to 35 V.

39 K

CN13 1

+35

GND

FAN

Figure 2-20 shows the main routine of the cooling fan drive.

Start

the fan

rotating?

t1 >/= 40°C

t2 >/= 50°C

t1 >/= 36°C

t2 >/= 42°C

t1 = Heat sink temperature on the C380 main board t2 = TH1 temperature on the C380 main borad.

YES

t1 >/= 50°C

t2 >/= 55°C

Fan Off

YES

Error 1

t1 >/= 60°C

t2 >/= 60°C

Fan On

YES

Error 1

Table 2-19. Cooling Fan Control by the ASIC (IC2)

ASIC (IC2, 176- pin) condition Cooling fan condition

Return to the Start.

High (5 VDC) On

Low (0 VDC) Off

Operating Principles Electrical Circuit Operation Principles 72

Figure 2-20. Main Routine of the Cooling Fan Drive

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EPSON Stylus Color 980 Revision A

Whether or not the cooling fan is driven depends on the electrical signals sent from the 2 thermistors (“t1” and “t2” in the figure). The “t1” represents the temperature detected by the thermistor attached to the heat sink on the C380 main board with a screw, while the “t2” represents the one between the printhead pre-driver ICs (IC15 and IC16) on the C380 main board. Table 2-20 shows the thermistor condition and corresponding fan operation.

Table 2-20. Conditions for Driving the Cooling Fan

Thermistor condition

t1 and t2 have detected temperatures.

Cooling fan:

Operating

≥ °

40 C or t2 ≥ 50 °Ct1 ≥ °36 C or t2 ≥ 42 °C

Cooling fan:

Stops operating.

Even while the printer is in idle status, the thermistors continue to detect temperatures every 2 seconds for the cooling fan operation. However, 2 error status conditions can be detected in the main routine, since air may not cool down if the fan is defective or the ventilation grill is clogged.

[Error 1] The printer does not stop printing but continues to print by lowering the drive frequency. For instance, the printer normally prints with the head drive frequency of 14.4 K Hz to perform 1440-dpi print (horizontal) at 200 cps (CR speed). In the error condition, however, the printer can lower the head drive frequency to 7.2 K Hz by reducing CR speed to 100 cpi. Note the printer actually performs printing at 1/3 duty / 1-pass of a normal speed.

completely. Therefore, this printer specifically shows a fatal error on the control panel when detecting abnormal temperatures in addition to the following 2 common conditions.

1. Failure in CR home position detection: This failure can be caused by one of the following 4 reasons:

- CRHP sensor itself is defective.

- There is a deficiency in the circuit.

- Incorrect PG adjustment

- CR motor is defective

2. Failure in ASF home position detection: This failure can be caused by one of the following reasons:

- ASF sensor itself is defective.

- There is a deficiency in the circuit.

- ASF is damaged.

- Pump/ASF motor is defective.

[Error 2] The printer stops printing. In this condition, the temperature at the junction of the power transistor for trapezoidal waveform production and the trapezoid waveform production IC (pre-driver) has risen to the limit (which means the thermistors have detected over 60

C at both t1 and

t2), and the printer generates a fatal error after stopping printing

Operating Principles Electrical Circuit Operation Principles 73

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2.3.8 ASF Solenoid Driver Circuit

A planetary gear is used in the gear train which switches between paper feed operation from the ASF and pump operation. The switching action is enabled by the solenoid. See Table 2-21 and Figure 2-21 which show ASF solenoid specifications and the ASF solenoid control circuit block diagram, respectively.

Table 2-21. ASF Solenoid Specifications

No. Items Specifications

+42

1 Type Single-phase DC solenoid

2 Drive voltage 42 VDC ± 5%

3 Coil resistance 588 Ω ± 10% (at 20 °C)

4 Induction 0.98 N (100 gf) or more

Table 2-22 shows the ASIC’s (IC2) conditions for driving the ASF solenoid.

Table 2-22. Conditions for Driving the ASF Solenoid

ASIC’s (IC2, 83-pin) condition Solenoid’s condition

High (5 VDC) Inducting

Low (0 VDC) Non-inducting

E05B 59(IC 2)

ASF_SO L

CN16

Figure 2-21. ASF Solenoid Control Circuit Block Diagram

C ooling fan

GND

VBB

Operating Principles Electrical Circuit Operation Principles 74

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EPSON Stylus Color 980 Revision A

2.3.9 EEPROM Control Driver Circuit

Data for various factory-adjustment items is stored in the EEPROM (IC7) on the C380 main board. The size of the EEPROM is 2 K bit since various types of dots are available with this printer and memory allocated for the ink consumption counter is accordingly large.

When the printer is turned on, data stored in the EEPROM is transferred to the D-RAM by the ASIC (IC3). In the D-RAM, the ASIC controls various adjustment values, total ink consumption, and current ink usage condition for each color, and the printer prints depending on these values. When the printer is turned off, the data and adjustment values accumulated and controlled in the D-RAM are written back into the specific addresses in the EEPROM under the ASIC’s control. Information is transmitted between the ASIC (IC3) and the EEPROM in the serial data format.

AT93C 56(IC 7)

Vcc

ORG

GND

E05A 60(IC 3)

ECS

ESK

EDI

EDO

DRAM(IC5)

Address

Data

Figure 2-22. EEPROM Control Circuit Block Diagram

Operating Principles Electrical Circuit Operation Principles 75

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TROUBLESHOOTING

CHAPTER

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EPSON Stylus Color 980 Revision A

3.1 Overview

This chapter describes how to troubleshoot problems. It consists of the sections shown in the flowchart below. When identifying and troubleshooting problems, be sure to proceed to the correct section specified in the flowchart.

Isolating the faulty part on the pow er supply board

(S ection 3.1.2)

Is the printer pow er on?

Yes

Troubleshooting w ith LED error indications

(S ection 3.1.1)

Following sections show detailed information on each step in the flowchart. Be sure to perform troubleshooting without neglecting the correct order specified in each section.

Isolating the faulty part according to the exhibited phenom enons

(S ection 3.1.3)

Figure 3-1. Troubleshooting Flowchart

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3.1.1 Troubleshooting with LED Error Indications

This section describes how to troubleshoot the problem when the printer indicates an error at power on and can not print. The Stylus Color can detect the following seven errors and indicates them with the LEDs, as shown below.

Table 3-1. Error Indication with the LEDs

Corresponding Combination of the LED Condition

Error Condition

Paper Out Error On --- --- On

Paper Jam Error --- Off Off Blink

No I/C or Ink Out (Black) Error

No I/C or Ink Out (Color) Error

Maintenance Error

Fatal Error Blink On On Blink

Double Feed Error

Power

--- On --- ---

--- --- On ---

Blink Blink Blink Blink

--- --- --- On

Ink Out

(Black)

Ink Out

(Color)

Paper Out

See the following tables which show the error conditions and corresponding possible causes.

Table 3-2. Error Condition and the Possible Causes

No. Error Condition Possible Causes

1 Paper Out Error or

Double Feed Error (Refer to Section

)

3.1.1.1.

2 Paper Jam Error

(Refer to Section

)

3.1.1.2.

1. Failure in paper feeding

2. Connector for the PE sensor is disconnected.

3. The PE sensor actuator is acting improperly. The sensor base is not fixed properly.

4. The PE sensor is defective.

5. ASF is damaged.

1. The paper in use is longer than specified.

2. The encoder at the back of the carriage is covered with dust.

3. The encoder at the back of the carriage is almost dislocated. If it has completely come off, a fatal error occurs.

4. The PE sensor remains on because it is covered with paper debris or dust.

5. The PE sensor actuator is not acting properly. The sensor base is not fixed properly.

6. The PE sensor is defective. The encoder is defective.

7. The ASF is not installed properly. The paper load sub roller is not fixed properly.

NOTE:“---” means the LED is not affected by the error condition.

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Table 3-3. Error Condition and the Possible Causes (continued)

No. Error Condition Possible Causes

3 NO I/C or Ink Out

Error (Refer to Section

)

3.1.1.3.

4 Maintenance

Error (Refer to Section

)

3.1.1.4.

5 Fatal Error

(Refer to Section

)

3.1.1.5.

1. The counter is not showing the actual remaining ink level.

2. Ink cartridge sensor actuator is not acting properly.

3. The micro switch is not mounted correctly. The connector (green) is disconnected.

4. The connector (green, 3-pin) on the small board directly attached to the printhead surface side is disconnected. Note the connector (green, 4-pin) is irrelevant as it is for the encoder.

5. The micro switch is defective.

6. The value for the ink consumption counter in the EEPROM is destroyed.

7. Ink cartridge replace command is generated because an abnormal temperature is detected.

Usual waste ink over-flow is requested. Note this error can be cleared by the special function

through the control panel operation only.

1. The CRHP sensor has come off. The connector for the CRHP sensor is disconnected.

2. The encoder belt has come off. The encoder belt is not placed through the encoder located at the back of the carriage.

3. The ASF sensor has come off. The connector for the ASF sensor is disconnected.

4. The coil for the CR motor has burnt.

5. The coil for the PF motor has burnt.

6. The lever fixing the planetary gear has come of the frame. The tension spring is dislocated.

7. Coil for the pump/ASF motor has burnt.

8. The coil for the ASF solenoid has burnt.

9. The CRHP sensor is defective.

10. The ASF sensor is defective.

3.1.1.1 Remedies for Paper Out Error

This section provides check points and corresponding actions which are necessary when the Paper Out Error problem has occurred because of either of the following reasons:



Paper is set in the ASF hopper but not fed.



Paper is fed but not detected by the printer.

Be sure to follow the steps in the order described in the tables.

NOTE:If the finding for the question is Yes, take the action described in

the right column. If “No”, proceed to the next step.

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EPSON Stylus Color 980 Revision A

M/C

CRH PE ASF

RED

WHT

BLK

M/C

Pin 3 (PE)

Pin 2 (G N D)

Table 3-4. Remedies for Paper Out Error Table 3-5. Remedies for Paper Out Error (continued)

Step Check point Actions

1 Is no paper

loaded?

Set a cleaning sheet in the ASF up side down. Then holding the top edge, press the Load/Eject button, and the micro pearl on the paper load roller (a semicircular roller) surface is removed. To remove severe smear, staple a cloth moistened with alcohol to a post card and clean the roller in the same manner.

N on-adhesive A rea

C L S heet

Adhesive A rea

This side dow n

2 Is the connector

for the PE sensor disconnected?

Connect the connector (yellow, 3-pin) for the PE sensor.

Bottom view of the printer m echanism

(U se a post card for the base sheet.)

Staplers

C loth m oistened w ith alcohol

Step Check point Actions

4 Is The PE sensor

defective?

Measure the voltage at the yellow 3-pin connector on the relay board by activating the actuator manually to check that the voltage is correct as follows.

The actuator is activated: 2.4 V or more The actuator is released: 0.7 V or less

5 Is the ASF damaged? Hand-rotate the shaft in the ASF in the paper feed

direction and check if the hopper hops out every time you rotate the shaft.

C onnector for the PE sensor

NOTE:

Tension spring

Even though the ASF sensor is in the proper condition for detecting the HP sensor, If the hopper is not operating at the correct timing for paper feeding, paper is

• Is the PE

sensor actuator acting improperly?

• Is the sensor base floating?

• Using your hand, try activating the actuator in the same condition as it is detecting incoming paper. Then release the actuator and check if the actuator automatically returns to its original position with the tension of the spring.

• Referring to the illustration above, check that the sensor base is securely installed to the frame. If the sensor base is floating or installed insecurely, instal it securely.

not loaded. Therefore, if the ASF sensor is working without this correct combination, reassembly or replace the ASF.

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Linear Scale (Encoder belt)

Encoder

C arriage U nit

PE Sensor Actuator

PE Paper G uide A ssem bly (R ight)

PF R oller

3.1.1.2 Remedies for the Paper Jam Error

This section includes the check points and corresponding actions which are necessary when the Paper Jam Error constantly occurs when the printer is turned on or feeding paper.

Be sure to follow the steps in the order described in the tables.

NOTE:If the finding for the question is Yes, take the action described in

the right column. If “No”, proceed to the next step.

Table 3-6. Remedies for Paper Jam Error

Step Check Points Actions

1 Is the paper length

beyond the specifications?

2 Is the encoder located

at the back of the CR covered with dust?

3 Is the encoder belt

nearly dislocated from the encoder?

Instruct the user that the Paper Jam Error occurs if paper whose length is beyond the specifications is used.

Check if there is any dust or paper debris lodged between the parts of the encoder (a transmission type photo sensor) located at the back of the carriage.

Referring to the illustration above, check if the encoder belt is nearly dislocated from the encoder.

Troubleshooting Overview 81

4 Is the PE sensor always

on because of the paper debris or dust accumulated over the sensor.

Viewing the PE sensor from the front, check that the actuator is the correct position: the actuator falls in the cutout without any paper.

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Top Fram e

Tension Spring

Table 3-7. Remedies for Paper Jam Error (continued) Table 3-8. Remedies for Paper Jam Error (continued)

Step Check Points Actions

• Is the PE sensor

actuator acting

Referring to Step 3 in Section 3.1.1.1 “Remedies for Paper Out Error”, check the sensor condition.

improperly?

• Is the sensor base floating?

• Is the PE sensor

defective?

• Is the encoder defective?

Referring to Step 4 in Section 3.1.1.1 “Remedies for Paper Out Error”, check the sensor condition.

Then, verify the encoder sensor condition by checking the following points for proper connection and electrical continuity, since checking the signal directly from the encoder is impossible.

1. Connection of the connector 1

2. Connection of the connector 2

3. Electrical continuity of the cable.

C arriage view ed from the back

C onnector 1

C heck for continuity.

C onnector 2

H ead surface

Step Check Points Actions

7 Is the ASF installed

improperly? Is any of the paper load

• Check the ASF installation at the following 2 points: View A and View B in the figure below.

View B

sub rollers fixed improperly?

Protrusion is set in here.

View B

D isconnected

View A

• Viewing the printer from the back, check that all of the six torsion springs securing the paper load sub rollers are properly installed.

View A

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EPSON Stylus Color 980 Revision A

M icro Sw itches

Actuator 1

Actuator 2

3.1.1.3 Remedies for No I/C and Ink Out Errors

This section includes the check points and corresponding actions which are necessary when the black ink (or color ink) LED comes on or blinks at power on despite the ink cartridge has been replaced with a new one. Be sure to follow the steps in the order described in the tables.

NOTE:If the finding for the question is Yes, take the action described in

the right column. If “No”, proceed to the next step.

Table 3-9. Remedies for No I/C and Ink Out Errors

Step Check Point Actions

1 Does the counter

value mis-match the actual remaining ink level?

2 Is the ink cartridge

sensor actuator acting improperly?

The ink consumption counter, separately set for black and color ink, adds up points according to ink weight used to form one dot. This counter is reset (the value returns to zero) when the I/C replacement sequence is performed. If the counter is reset for any other purposes, the following adversities will occur.

1. Enough ink is remaining in the cartridge, but the printer shows the Ink low or Ink end condition and can not continue to print.

2. Ink has run out but the printer continues to print and

starts false firing, which damages the printhead.

Explain the situation to the user well, and replace the I/C with a new one.

Turn the both actuators (eight and left) manually and check that they properly push the micro switches. Then, also check that the actuators return to their normal conditions shown in the figure below automatically.

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EPSON Stylus Color 980 Revision A

Table 3-10. Remedies for No I/C and Ink Out Errors (continued) Table 3-11. Remedies for No I/C and Ink Out Errors (continued)

Step Check Point Actions

3 Is the micro switch fixed

improperly? Is the connector (green)

disconnected?

4 Is the connector (green,

3-pin) disconnected form the small board which is directly attached to the head surface side?

5 Is the micro switch

defective?

If the micro switch is not properly attached, the actuators possibly fail to touch the micro switch. Therefore, check that the micro switch is securely attached to the carriage by the hooks.

onnector

M icro S w itches

H ooks

Remove the printhead and check if the connector (green, 3-pin) is disconnected from the small board at the bottom of the printhead.

Note: The white 4-pin is irrelevant as it is for the encoder.

1. Keeping the left micro switch pressed down, place the probes of the tester to the middle and left pins to check for electrical continuity.

2. Keeping the right micro switch pressed down,

place the probes of the tester to the middle and right pins to check for electrical continuity.

Step1

Push 1

Step2

Push 2

Step Check Point Actions

6 Is data in the EEPROM

destroyed?

If the address for the ink consumption information in the EEPROM is garbled and the printer shows the Ink Out (Ink End) error constantly, the printer sets the interface signal “BUSY” to High and stops communication with any other peripheral devices.

Therefore, it is effective to replace the I/C with a new one to forcibly overwrite the address with 00H.

7 Is the abnormal

temperature detection circuit working?

Since the Stylus Color 980 drives a large number of PZT with a high drive frequency, if the printhead is driven without any ink filled in it, the printhead abnormally heats up and may be damaged as the result. Therefore, this printer monitors and controls the temperature around the printhead more strictly than any other printers do. In case the printer detects abnormal rise in head temperature during printing, it generates the I/C replacement command after the sequence described below.

1. Detects an abnormal temperature during printing.

2. Stops printing and begins a head cleaning. (This

operation solves the nozzle clogging problem in most cases.)

3. Resumes printing.

4. If detects an abnormal rise in the head

temperature again, sets a flag and generates the I/C replacement command. (The Ink LED comes on.)

The printer mostly enters this sequence under the following two conditions:

• Ink around the nozzles is severely viscous. (due

to removal and reinstallation of the I/C)

• Ink is leaking from the printhead because of a

large impact.

The temperature in the printhead actually rises abnormally when half the nozzles in any nozzle row are clogged, or 48 nozzles in any 96-nozzle row are clogged.

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EPSON Stylus Color 980 Revision A

3.1.1.4 Remedies for the Maintenance Error

While the printer is in this error condition, it disables all operations including data communication except for the panel operation specified to clear the error. Therefore, follow the steps described in Table 3-12 to solve the problem.

Table 3-12. Remedies for the Maintenance Error

Step Actions Correct LED condition

1 Turn the printer on while pressing the

Load/Eject and the Cleaning buttons, and the Paper Out LED starts blinking. (Blinks for three seconds.)

2 While the Paper Out LED is blinking (for

three seconds), press the Cleaning button for ten seconds.

The Paper Out LED is blinking.

The following three red LEDs are blinking: Ink Out LED (Black), Ink Out LED (Color), and Paper Out LED.

NOTE:During the Step 2, if the Load/Eject button is pressed, the

Maintenance Error is not cleared but the EEPROM initialization mode is activated instead. The EEPROM initialization can be used to recover from conditions such as the print e r does not accept any data from the PC. The EEPROM initialization mode initializes the fo llo w i n g it e ms:



Accumulated power-off time:The value for the Timer IC is reset.



CL Timer: The CL timer, which is also called fire-

waiting timer, secures the printer specific period of time so bubbles formed around the printhead during a cleaning vanish.



I/F selection: Selects “Auto”, the factory default,

from 3 I/F selection items: Auto, Parallel and Option.

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EPSON Stylus Color 980 Revision A

M/C

CRH PE ASF

RED

WHT

BLK

M/C

AS F S ensor

ASF Fram e (Left)

C onnector 1

C onnector 2

To Pin 1

To Pin 3

Step 1

Step 2

To Pin 2

To Pin 4

CR M otor

3.1.1.5 Remedies for Fatal Error

A fatal error is basically caused by any of the following conditions:

1. The printer does not detect the carriage in the home position.

2. The printer does not detect signals from the linear scale.

3. The ASF sensor does not detect the ASF home position.

The following tables show various causes of the error and corresponding solutions. Be sure to follow the steps correctly to solve the problems.

NOTE:If the finding for the question is Yes, take the action described in

the right column. If “No”, proceed to the next step.

Table 3-13. Remedies for Fatal Error

Step Check Point Actions

1 Has the CRHP

sensor come off the printer mechanism frame?

Is the connector for the CRHP sensor disconnected?

Check the CRHP sensor visually. Connect the connector properly. Make sure the connector is connected to the indicated position on the relay board. Also, check that there is no dust nor paper debris between the sensor parts.

C onnector 1

M echanism Fram e

C onnector 2

CRH PE ASF

M/C

RED

Table 3-14. Remedies for Fatal Error

Step Check Point Actions

3 Has the ASF sensor

come off? Is the sensor for the

ASF disconnected?

4 Has the coil for the

CR motor burnt?

Referring to the figure below, check that the ASF sensor is attached to the correct position.

Check that both connectors 1 and 2 are securely connected.

Since the CR motor is controlled by the Bipolar system, measure the coil resistance using the tester as shown below.

<Resistance: 5.8

Ω ±

10%>

Note: Be sure to measure the resistance a t two points shown in the figure below.

Troubleshooting Overview 86

2 Has the encoder belt

come off?

M/C

WHT

M/C

BLK

Referring to step 2 in Section 3.1.2.2, check that the encoder belt is set between the sensor parts. Also check that the sensor is free from dust and paper debris.

5 Has the coil for the

PF motor burnt?

Measure the internal coil resistance of the PF motor in the same manner as for the CR motor.

<Resistance: 8.1 Ω ± 10%>

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EPSON Stylus Color 980 Revision A

M/C

CRH PE ASF

RED

WHT

BLK

M/C

T o P in 2 (G N D )

To Pin 3 (CRHP)

Table 3-15. Remedies for Fatal Error (continued) Table 3-16. Remedies for Fatal Error (continued)

Step Check Point Actions

6 Is the lever

securing the planetary gear dislocated from the frame?

Has the tension spring come off?

Check if the two hooks securing the planetary gear fixing lever to the Pump/ASF switch mechanism are released from the

Pum p/ASF M otor

Lever Fixing the Planetary G ear

frame. Also, check the

7 Has the coil for

the Pump/ASF motor burnt?

8 Is the coil for the

ASF solenoid burnt?

tension spring’s condition.

Measure the internal coil resistance of the pump/ASF motor in the same manner as for the CR motor (Step 4).

<Resistance: 7.0

Referring to the figure below, measure the coil resistance of the solenoid coil using a tester. Note the tester can be used regardless of the polarity.

Iron C ore in

he Solenoid

Tension Spring

10%>

Ω ±

<Resistance: 588 Ω ± 10%>

Step Check Point Actions

9 Is the CRHP sensor

defective?

Check for the correct voltages at 3-pin connector shown in the figure below. Turn the printer on and check the voltage is correct as follows:

• When the CR has come in the home position, the voltage rises to 2.4 VDC or higher.

• When the CR has left the home position, the voltage drops to 0.7 VDC or lower.

10 Is the ASF sensor

defective?

Check for the proper voltage in the same manner as described in the previous step. The ASF connector (3-pin) location on the relay board is also shown in the figure above. The pin configuration is also the same as CRHP sensor.

At power on, the ASF reset operation is performed, and the ASF Sensor detects ASF home position.

Solenoid

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EPSON Stylus Color 980 Revision A

L 1 (re v e rse s id e )

CN1 side

CN2 side

CN5 Side

C N 3 S ide

(reverse side)

3.1.2 Isolating the Faulty Part on the Power Supply Board

This section explains how to troubleshoot the following problems:



The printer is turned on, but the initialization is not performed and LED on the control panel do not come on.



Problems after power on

Be sure to perform troubleshooting in the order specified, because the parts involved are mentioned in the disassembly procedure to facilitate servicing.

Table 3-17. Isolating the Faulty Part on the Power Supply Board

Step Check Point Action

1 Is the panel FFC

disconnected from the connector on the panel board?

2 Is the panel FFC

disconnected from the connector (black, 12pin) on the relay board?

3 Is the connector

disconnected from the CN15 on the main board?

The power switch for this printer is in the secondary side. Therefore, if the FFC does not transfer signals, the printer does not operate despite the power supply board and the main board are properly connected.

This printer uses the power switch on the secondary side. Therefore, if the FFC does not transfer signals, the printer does not operate despite the power supply board and the main board are properly connected.

The reason is the same as above. The panel control FFCs are connected via 1) CN15

→

on the main board Panel.

2) Relay board → 3) Control

Table 3-18.

Isolating the Faulty Part on the Power Supply Board (continued)

Step Check Point Action

6 Is CN 5 or CN6 on the

main board disconnected?

7 Is the choke coil

broken?

8 Is the transformer (T1)

broken?

Check that the connectors CN5 and CN6, which are used to input power from the power supply board, are properly connected.

Viewing the reverse side of the power supply board, check for the proper continuity at the two points indicated in the figure below.

Referring to the figure below, check if the transformer is disconnected between the poles. Try every combination in each group marked with a blue box.

4 Has the fuse (F1) on

the power supply board blown?

5 Is CN2 or CN3 on the

power supply board disconnected?

Check if the line in the F1 located beside the CN1 on the power supply board has blown.

Check that the connectors CN2 and CN3, which are used to apply power to the main board, are properly connected.

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EPSON Stylus Color 980 Revision A

Step.1

Step.2

PNP Tr

Step.3

Step.4

5-pin(O SC )

GND

IC 5 1

O scillation w aveform

Table 3-19.

Isolating the Faulty Part on the Power Supply Board (continued)

Step Check Point Action

9 Is the main switching

FET (Q1) defective?

10 Is the NPN connection

transistor defective?

Check the electrical continuity of the switching FET by trying four patterns below. Be sure to pay attention to the polarity. If the main switching FET is good, the findings should be as shown under the figure.

Step.1

Step.3

Step.2

Step.4

Step 1: Off, Step 2: On, Step 3: Off, Step 4: Off

Check the electrical continuity of the NPN connection transistor on the C265 PSB/SE board by trying four patterns below. Be sure to pay attention to the polarity. If the NPN contact transistor is good, the findings should be as shown under the figure. Note the NPN connection transistor is shown in the circuit diagram as described below.

Step.1

NPN Tr

Step.2

Table 3-20.

Isolating the Faulty Part on the Power Supply Board (continued)

Step Check Point Action

11 Is the PNP connection

transistor defective?

12 Is the +5 V regulator

(IC51) defective?

Check the PNP connection transistor on the C265 PSB/SE board in the same manner described in the previous step.

Step 1: Off, Step 2: On, Step 3: Off, Step 4: On

Check the IC51 for the oscillation waveform (measured by using a oscillo scope) output from the Pin 5. If the output waveform is as shown below, it means the IC51 is working properly.

Troubleshooting Overview 89

Step.3

Step.4

Step 1: On, Step 2: Off, Step 3: Off, Step 4: On

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EPSON Stylus Color 980 Revision A

Soldered area

Step 1

Step 2

Step 3

Step 4

3.1.3 Isolating the Faulty Part according to the Phenomenon

Refer to this section if you could not solve the problem in Section 3.1.1 or Section 3.1.2 or need more information to isolate the cause according to the exhibited phenomenon. The contents mostly cover the problems relating to the C380 Main board and their remedies.

Table 3-21. Phenomena Exhibited

No. Phenomenon Exhibited Table to refer to

1 The cooling fan does not rotate.

Note the cooling fan does not constantly rotate. Refer to Chapter 2 / Section 2.3.7.

2 CR motor does not rotate. Table 3-23

3 PF motor does not rotate. Table 3-24

4 pump/ASF motor does not rotate. Table 3-25, Table 3-26

5 ASF solenoid does not operate. Table 3-27, Table 3-28

6 Cleaning does not solve the print problem. Table 3-29 - Table 3-33

7 Ink End Error occurs after the printhead is

replaced, so the printhead can not be adjusted.

Table 3-22,

Table 3-34

Table 3-22. Cooling Fan does not Rotate

Step Check Point

1 Is the fuse (F6)

open?

2 Is the transistor

(Q7) defective?

Place the probes of the tester on the both terminals of the chip fuse (F6) on the C380 Main board. Then check for electrical continuity. F6 is located beside the Q7 which is in front of the cooling fan connector (CN13).

Q7 is beside the connector (CN13 for the cooling fan). Since the three terminals for the base, emittor, and collector are not marked, try every pattern below to check for electrical continuity. Be sure to test with the correct polarity. The correct findings are shown under the figure.

Action

Troubleshooting Overview 90

3 Is the internal coil

for the fan motor open?

4 Is the C380 Main

board defective?

Step 1: On, Step 2: Off, Step 3: On, Step 4: Off

Replace the Fan unit and then check for the correct operation.

If the cause has not been isolated yet, replace the C380 Main board.

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EPSON Stylus Color 980 Revision A

M/C

CRH PE ASF

RED

WHT

BLK

M/C

Phase A, Phase B, Phase /A, Phase /B fro m th e P in 1 m a rk

20V 20

Table 3-23. CR Motor does not Operate Table 3-24. PF Motor does not Operate

Step Check Point

1 Getting ready

for inspecting waveforms.

2 Check of the

waveform and remedies

Action

The connector used to control the CR motor is indicated in the figure below. Using the oscillo scope, check for the waveform for each phase at the indicated connector. To check the waveform, press the Load/Eject button to attempt to move the carriage. Be sure to leave the cable for the CR motor connected.

Phase A, P hase B , P hase /A , and Phase /B from the P in 1 m ark.

CRH PE ASF

RED

WHT

NOTE:

M/C

The GND can be outp ut by pl aci ng the p r obe of

M/C

BLK

the oscillo scope to the tapped hole in the bottom plate on the board with a screw. Note the connector has no ground line since this printer drives the motor with the bipolar system.

While trying to drive the CR motor, the

waveform output

20V

from each phase should be as shown in the figure. If the waveform output from each phase is as shown below, replace the CR motor. If not, replace the IC12 (CR motor driver IC) or C380 Main board.

NOTE:

The GND can be outp ut by pl aci ng the p r obe of the oscillo scope to the tapped hole in the bottom plate on the board with a screw.

Step Check Point

1 Getting ready

for inspecting waveforms.

Action

The connector used to control the PF motor is indicated in the figure below. Using the oscillo scope, check for the waveform for each phase output from the indicated connector. To check the waveform, press the Load/Eject button to attempt the ASF paper feeding. Be sure to leave the cable for the PF motor connected.

M/C

NOTE:

The GND can be output by pla ci ng th e pro be of the oscillo scope to the tapped hole in the bottom plate on the boa rd with a screw. Note the connector has no ground line since this printer drives the motor with the bipolar system.

2 Check of the

waveform and remedies.

While trying to drive the PF motor, the waveform output from each phase should be as shown in the figure. If the waveform output from each phase is as shown in the figure, replace the PF motor. If not, replace the IC11 (PF motor driver IC) or C380 Main board.

NOTE:

The GND can be output by pla ci ng th e pro be of the oscillo scope to the tapped hole in the bottom plate on the board with a screw.

Troubleshooting Overview 91

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EPSON Stylus Color 980 Revision A

20V

Table 3-25. Pump/ASF Motor does not Operate Table 3-26. Pump/ASF Motor does not Operate (continued)

Step Check Point

1 Getting ready for

inspecting waveforms.

Action

The connector used to control the Pump/ASF motor is indicated in the figure below. Using the oscillo scope, check the waveform for each phase output from the indicated connector. To check the waveform, press the Load/Eject button to attempt the ASF paper feeding. Be sure to leave the cable for the Pump/ASF motor connected.

CRH PE ASF

RED

WHT

M/C

BLK

Phase A, Phase B, Phase /A, Phase /B fro m th e P in 1 m a rk

NOTE:

The GND can be output by placing the probe of the oscillo scope to the tapped hole in the bottom plate on the boa rd with a screw. Note the connector has no ground line since this printer drives the motor with the bipolar system.

Step Check Point

2 Check of the

waveform and remedies.

Action

While trying to drive the Pump/ASF motor, the waveform output from each phase should be as shown below. If the waveform output from each phase are as shown below, replace the Pump/ASF motor. If not, replace the IC13 (Pump/ASF motor driver IC) or C380 Main board.

M/C

NOTE:

The GND can be output by placing the probe of the oscillo scope to the tapped hole in the bo ttom plate on th e boa rd wi th a screw.

Troubleshooting Overview 92

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EPSON Stylus Color 980 Revision A

20V 20

Table 3-27. ASF Solenoid does not Operate Table 3-28. ASF Solenoid does not Operate (continued)

Step Check Point

1 Is the fuse (F4)

open?

2 Is the transistor

(Q8) defective?

Place the probes of the tester on the both terminals of the chip fuse on the C380 Main board, then check for electrical continuity. The F4 is located between CN12 and CN16 and also beside the Q9.

Place the probe of the oscillo scope on the collector side of the transistor Q8 on the C380 Main board, then check that 40 VDC is constantly applied. Then press the Load/ Eject button and check if the voltage drops to 0 VDC for an instant. If it does, it means the Q8 is working properly. The Q8 is located between CN12 and CN16.

Action

20V 20

Step Check Point

3 Is the transistor

(Q9) defective?

Place the probe of the oscillo scope on the emittor side of the transistor Q9 on the C380 Main board, then check that voltage is always 0 VDC. Then press the Load/Eject button and check for an instant change in voltage level from 0 to 40 VDC. if it changes correctly as described above, it means the Q9 is working properly. The Q9 is located beside the CN16.

Action

20V 20

4 Is the C380

Main board defective?

If the cause has not been isolated yet in the previous steps, replace the C380 Main board.

Troubleshooting Overview 93

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EPSON Stylus Color 980 Revision A

Foreign m atter Dust

D am aged area on the rubber

R u b b e r p a rt o f th e c a p

Table 3-29. Cleaning does not Solve the Print Problem Table 3-30. Cleaning does not Solve the Print Problem (continued)

Step Check Point Action

1 Repeat the cleaning

7 or 8 times.

2 Trying the initial ink

charge operation.

3 Reinstalling the

printhead FFC.

Unlike the previous products, the Stylus Color 980 is not equipped with the CL3 (dummy cleaning). Therefore, you can repeat the cleaning every time you press the Cleaning button without running a self-test nor any printing.

You can repeat the initial ink charge operation in the way described below:

1. Using the exclusive program, reset the initial ink charge flag in the EEPROM.

2. Turn the printer back on. (Refer to Chapter 5 for details.)

Remove the upper case and check if the FFCs are properly connected to the CN8 and CN9 on the C380 Main board. Even though they are not installed aslant as shown below, disconnect the FFC once and connect them again, then run a print check.

Fram e

H e a t S in k

Step Check Point Action

4 Check the cap for any

foreign matter, dirt, or damage.

5 Has the valve cap fallen

off?

Remove the printer mechanism and release the carriage lock at the back of the printer mechanism to move the carriage unit away from the home position. Then, have a close look at the cap rubber and check for any problem below.

If a strong impact is applied to the valve cap in the cap unit, it may fall off. Therefore, check that the cap is securely attached to the cap unit. Without this part, ink can not be absorbed.

Troubleshooting Overview 94

NOTE:

C heck that the connectors are not connected aslant.

Before reinstalling the FFCs, be sure to remove the frame (in red in the figure) secured to the lower case with two screws. Otherwise, proper con t in uit y may not be guaranteed despite the FFCs look connected without slant.

Valves

Valve Cap

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EPSON Stylus Color 980 Revision A

D2082B1382D2082B1382

H eat Sin k

Tr for the black nozzles

Tr for the color n ozzles

20V

Table 3-31. Cleaning does not Solve the Print Problem (continued) Table 3-32. Cleaning does not Solve the Print Problem (continued)

Step Check Point Action

6 Is any ink tube

disconnected from the cap unit?

Referring to the figure below, check the following points:

• Connection between two tubes and the bottom of the cap (Remove the whole cap from the unit to check the connection.)

• Connection of each tube and the separator.

• Connection of one tube at the bottom of the valve

Applying/releasing the m inus pressure

Left tube

Separator

CCW

7 Is the FFC

disconnected from the printhead board?

(sem itransparent)

Remove the printhead unit from the carriage unit, and bring the printhead surface side upward to check that two FFC is properly connected. Even though no slant connection nor disconnection is found, disconnect the FFC once and install them again.

Ink absorp tio n

R ight tube (white)

Step Check Point Action

8 Is the head driver

transistor defective?

If you see the C380 Main board from the heat sink side, the following four power transistors can be found:

• Q3 and Q4: Outputs the common voltage for the row A and B (black nozzle rows)

• Q5 and Q6: Outputs the common voltage for the row C, D, and E (color nozzles)

To check if each pair transistor is working properly, check the trapezoid waveform at the emittor terminal of the charging side (Q3 and Q5). Check the waveform while running a print.

Troubleshooting Overview 95

FFC 2

FFC 1

NOTE:

Frequency of waveform and voltage level (p-p) varies if printing is performed through the driver. Therefore, as long as the trapezoid waveform is output, the head driver IC is considered good, and the printhead must be replaced in that case.

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EPSON Stylus Color 980 Revision A

Table 3-33. Cleaning does not Solve the Pr int Problem (continued)

Step Check Point Action

9 Is the head driving

pre-driver defective?

If a trapezoid waveform is not output in the previous step, check all the power transistors (Q3 Q6) for base waveforms. Like the head transistor in Step 8, the power transistors also output trapezoid waveforms, but are input from the predriver side.

H e a t S in k

D2082B1382

T r fo r th e color nozzles

B1382

T r fo r th e black nozzles

20V

D2082

Unlike the previous products, the procedure after head replacement is precisely specified. Therefore, be sure to follow the steps in Table 3-34 exactly. The background of the procedure is explained after the table.

Table 3-34.

Ink End Error Occurs after Printhead Replacement

Step Action

1 Turn the printer power off.

2 Replace the printhead.

3 Turn the printer back on. (The printer is in No Ink Cartridge

condition.)

4 Keep the Load/eject button pressed down for several seconds.

The printer enters the I/C replacement sequence. (The printer moves to the black ink cartridge replacement position first, then to the color cartridge replacement position if the Load/Eject button is pressed.)

5 Input a 21-digit head IC. (Refer to Chapter 4 “Adjustment” for

details.)

6 Perform the initial ink charge operations. (Refer to Chapter 4

“Adjustment” for details.)

7 Perform the head angle adjustment. (Refer to Chapter 4

“Adjustment” for details.)

8 Perform the Bi-D adjustment. (Refer to Chapter 4 “Adjustment” for

details.)

9 Perform the Uni-D adjustment. (Refer to Chapter 4 “Adjustment”

for details.)

If the waveform are not output correctly, replace the IC15/16 or C380 Main board. If the waveform is output correctly, replace the corresponding power transistor.

Troubleshooting Overview 96

Epson 980 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PRODUCT DESCRIPTION

1.1 FEATURES

1.2 Specifications

1.2.1 Printing Specifications

1.2.2 Options and Consumable Products

1.2.3 Paper Specifications

1.2.3.1 Cut Sheet

1.2.3.3 Envelope

1.2.3.4 Index Card

1.2.3.2 Transparency, Glossy Fi lm

1.2.3.5 Self Adhesive Sheets

1.2.3.6 Photo Paper

1.2.3.7 Photo Stickers

1.2.4 Printable Area

1.2.5 Ink Cartridge Specifications

1.2.5.1 Black Ink Cartridge

1.2.5.2 Color Ink Cartridge

1.2.6 Electrical Specifications

1.2.7 Environmental Condition

1.2.8 Reliability

1.2.9 Safety Approvals

1.2.10 Acoustic Noise

1.2.12 Physical Specifications

1.3 Interface

1.3.1 Parallel Interface (Forward Channel)

1.3.2 Parallel Interface (Reverse Channel)

1.3.3 USB Interface

1.3.4 Optional interface

1.3.5 Printer Language and Emulation

1.3.6 Prevention Hosts from Data Transfer time-out

1.3.7 Auto Interface Selection

1.3.7.1 IEEE 1284 .4 Protocol

1.4 Control Panel Operation

1.4.1 Indicators (LEDs)

1.4.2 Panel Functions

1.4.2.1 Printer Setting Mode

1.4.2.2 Special Setting Mode

1.4.3 Printer Condition and Panel Status

1.5 Error Status

1.5.1 Ink Out

1.5.4 No Ink Cartridge

1.5.5 Maintenance Request

1.5.6 Fatal Errors

1.5.7 Double Feed Errors

1.5.2 Paper Out

1.5.3 Paper Jam

1.6 Printer Initialization

1.7 Component Layout

1.7.1 Printer Mechanism

1.7.2 C380 Main Board

1.7.3 C265 PSB/PSE Board

1.7.4 C265 PNL Board

1.7.5 C265 Relay Board

OPERATING PRINCIPLES

2.1 Overview

2.2 Printer Mechanism Operating Principles

2.2.1 Carriage Mechanism

2.2.2 Printing Mechanism

2.2.3 Paper Load Mechanism

2.2.4 Paper Feed Mechanism

2.2.5 Pump/ASF Switch Mechanism

2.2.6 Pump / Carriage Lock / Head Cleaner Mechanism

2.3 Electrical Circuit Operation Principles

2.3.1 C265 PSB/PSE Power Supply Board

2.3.2 C380Main Board

2.3.3 CR Motor Driver Circuit

2.3.4 PF Motor Driver Circuit

2.3.5 Pump/ASF Motor Driver Circuit

2.3.6 Printhead Driver Circuit

2.3.7 Cooling Fan Driver Circuit

2.3.8 ASF Solenoid Driver Circuit

2.3.9 EEPROM Control Driver Circuit

TROUBLESHOOTING

3.1 Overview

3.1.1 Troubleshooting with LED Error Indications

3.1.1.1 Remedies for Paper Out Error