Epson Stylus Color 850 Technical specifications

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EPSON Stylus Color 850

4009157

NOTICE



transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or

otherwise, without the prior written permission of SEIKO EPSON CORPORATION.



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



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.



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.

PRECAUTIONS

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

damage to equipment.

DANGER

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

injury. Great caution should be exercised in performing procedures preceded by

DANGER Headings.

WARNING

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

The precautionary measures itemized below should always be observed when performing

repair/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL

DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2. NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIER 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 ANTI-STATIC WRIST STRAPS, WHEN

ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY

THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER

NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY

APPLICABLE EPSON WARRANTY.

PREFACE

This manual describes basic functions, theory of electrical and mechanical operations,

maintenance and repair procedures of Stylus Color 850. 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.

APPENDIX

Provides the following additional information for reference:

• Connector pin assignments

• Electric circuit boards components layout

• Exploded diagram

• Electrical circuit boards schematics

REVISION STATUS

Rev. Date Page(s) Contents

A 1998/04/9 All First release

TABLE OF CONTENTS

PRODUCT DESCRIPTIONS

1.1 FEATURES ..........................................................................................1-1

1.1.1 Options..........................................................................................................1-2

1.2 HARDWARE SPECIFICATIONS..........................................................1-3

1.2.1 Printing Specifications ................................................................................1-3

1.2.2 Print Speed and Printable Columns ...........................................................1-4

1.3 MAIN COMPONENTS..........................................................................1-5

OPERATING PRINCIPLES

2.1 OVERVIEW..........................................................................................2-1

DISASSEMBLY AND ASSEMBLY

ADJUSTMENT

4.1 OVERVIEW..........................................................................................4-1

TROUBLESHOOTING

MAINTENANCE

APPENDIX

PRODUCT DESCRIPTIONS

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EPSON Stylus Color 850

Chapter 1 Product Descriptions

Rev. A 1-1

1.1 FEATURES

The EPSON Stylus COLOR 800/850 are a high-performance color ink jet printer designed for the

small office/home office (SOHO) market. The main features of this printer are:



High print quality for color graphics



High resolution 1440 (H) x 720 (V) dpi printing

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Colors Cyan, Magenta, Yellow, Black



Printing method Traditional and new Microweave printing



Smaller dot diameter Stylus Color 800 uses Normal and Micro dot.

Stylus Color 850 uses Normal, Micro, Super micro dot.



High-speed printing



400 cps in LQ mode



533 cps in Draft mode

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Built-in auto sheet feeder with a wide page capability and high capacity

This printer holds: 100 cut-sheets (55 g/m2)

10 envelopes

20 sheets of glossy paper

30 index cards

50 transparency film sheets

70 sheets of special paper

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Two interfaces built-in and one optional Type-B interface card slot



Mac serial interface (up to approximately 900Kbps)

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Bi-directional parallel interface (IEEE-1284 level 1 device)

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Optional Type-B interface card slot



High speed paper loading and ejecting.

Printing speed is same as Stylus Color 800, but paper eject speed is improved for Stylus Color

850.



4 scalable fonts and 5 LQ fonts

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Scalable fonts Roman T, Sans Serif H, Roman, Sans Serif



LQ fonts Roman, Sans Serif, Courier, Prestige, Script



9 usable character tables (NLSP version)

Italic, PC437, PC850, PC437 Greek, PC852, PC853, PC855, PC857, PC866, PC869,

MAZOWIA, Code MJK, ISO 8559-7, Latin ISO Latin 1T, Bulgaria, PC774, Estonia, ISO 8859-2,

PC866 LAT, PC866 UKR, PCAPTEC, PC708, PC720, PCAR864, PC860, PC865, PC861,

Hebrew7*1, Hebrew8*2, PC862(Hebrew)*1.

CAUTION

Character with “*1” in the character table above is the hidden character

table which is not mentioned in the user’s guide and is also not able to

set on the default setting.

EPSON Stylus Color 850

Chapter 1 Product Descriptions

Rev. A 1-

1.1.1 Options

Table 1-1. Options

Part Number Description

C82305/C82306 Serial interface card

C82307/C82308 32KB serial interface

C82310∗32KB parallel interface card

C82313∗32KB EEE-488 interface card

C82315∗TWAIN interface card

C82314∗Coax interface card

C82312∗LocalTalk™ interface card

C82331∗Ethernet interface card

C82345∗Type B bi-directional parallel interface card

C836021∗Parallel interface cable (shielded)

(D-SUB 25-pin to Amphenol 57)

C83603∗/C83604∗Serial interface cable

(D-SUB 25-pin to D-SUB 25-pin)

C83605∗

C83606∗Serial interface cable

(D-SUB 9-pin to D-SUB 25-pin)

S020108 Black ink cartridge

S020089 Color ink cartridge

S041059 EPSON 360 dpi ink jet paper (A4) / 100 sheets pack

S041025 EPSON 360 dpi ink jet paper (A4) / 200 sheets pack

S041060 EPSON 360 dpi ink jet paper (Letter) / 100 sheets pack

S041061 EPSON photo-quality Ink jet paper (A4) / 100 sheets pack

S041026 EPSON photo-quality Ink jet paper (A4) / 200 sheets pack

S041062 EPSON photo-quality ink jet paper (Letter) / 100 sheets pack

S041067 EPSON photo-quality ink jet paper (Legal) / 100 sheets pack

S041054 EPSON photo-quality ink jet card (A6) / 50 sheets pack

S041121 EPSON photo-quality ink jet card (5.8 inches)

S041122 EPSON photo-quality ink jet card (10.8 inches)

S041071 EPSON photo-quality glossy film (A4) / 15 sheets pack

S041072 EPSON photo-quality glossy film (Letter) / 15 sheets pack

S041107 EPSON photo-quality glossy film (A6) / 10 sheets pack

S041126 EPSON photo-quality glossy paper (A4)

S041124 EPSON photo-quality glossy paper (Letter)

S041063 EPSON ink jet transparencies (A4) / 30 sheets pack

S041064 EPSON ink jet transparencies (Letter) / 30 sheets pack

S041106 EPSON photo-quality self-adhesive sheets (A4) / 10 sheets pack

Note) Asterisk in a part number replaces the last digit of the part number, which varies by

country.

EPSON Stylus Color 850

Chapter 1 Product Descriptions

Rev. A 1-

1.2 HARDWARE SPECIFICATIONS

1.2.1 Printing Specifications



Print method: On-demand ink jet



Nozzle configuration: Monochrome (Black) 128 nozzles (32 x 4 staggered)

Color (magenta, cyan, yellow) 64 nozzles (32 X 2 staggered,

each color)

#2 #3

#4 #1

#125#126 #127

#128

144/360 inch

32/360 inch

#63

#64

Black Cyan

#63

#64

Magenta

#63

#64

Yellow

144/360 inch

320/360 inch

32/360 inch 32/360 inch

144/360 inch

Paper feed direction

32/360 inch

Figure 1-1. Nozzle Configuration



Print direction Bi-directional with logic-seeking

CAUTION

Heads of Stylus Color800 and Stylus Color850 has compatibility each

other. However, since the head of Stylus Color850 is able to discharge

for super micro dot, the parts code number and price are different from

the head of Stylus Color800. Therefore, when you need to order head,

order each head exclusively made for that model. As the head of Stylus

Color 850, the lot number which is written on the side (opposite side to

the side head ID is written), is ended with “J”.

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