Epson Stylus Photo 820 User manual

EPSONTERMINALPRINTER
StylusTMCOLOR IIs&StylusTM820
SERVICEMANUAL
EPSON 4005245

NOTICE
All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO
EPSON’s express written permission is forbidden.
The contents of this manual are subjects to change without notice.
All efforts have been made to ensure the accuracy of the contents of this manual. However, should any errors
be detected, SEIKO EPSON would greatly appreciate being informed of them.
The above notwithstanding SEIKO EPSON can assume no resoinsibility for any errors in this manual or the
consequence thereof.
Epson and Epson’s ESC/P are registered trademark of Seiko Epson Corporation.
General Notice: Other product names used herein are for identication purpose only and may be trademark of
their respective companies.
+Copyright 1995 by SEIKO EPSON CORPORATION Nagano, Japan
-i-

PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) personal jnjuury 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 PROCEDURE.
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 DCTATED 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 THATTHE 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
INTERNALCOMPONENTS.
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.
-ii-

PREFACE
This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of
Stylus Color IIs / Stylus 820.
The instructions and procedures included herein are intended for the experience repair technician, and
attention should be given to the precautions on the preceding page. The chapters are organized as follows:
CHAPTER 1. PRODUCT DESCRIPTION
Provides a general product overview, lists specifications, and illustrates the main components of the printer.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of printer operation.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Includes the step-by-step guide for product disassembly and assembly
CHAPTER 4. ADJUSTMENTS
Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.
CHAPTER 6. MAINTENANCE
Describes preventive maintenance techniques and lists lubricants and adhesives required to service the
equipment.
APPENDIX
Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
The contents of this manual are subject to change without notice.
-iv-

REVISION SHEET
Revision Issue Date Contents
Rev.-A August 25,1995 1st issue
-v-

TABLE OF CONTENTS
CHAPTER 1. PRODUCT DESCRIPTION
CHAPTER 2. OPERATION PRINCIPLES
CHAPTER 3 DISASSEMBLY AND ASSEMBLY
CHAPTER 4. ADJUSTMENT
CHAPTER 5. TROUBLESHOOTING
CHAPTER 6. MAINTENANCE
APPENDIX
-vi-

Chapter 1 Operating Principles
Table of Contents
1.1 OVERVIEW 1-1
1.2 SPECIFICATIONS 1-1
1.2.1 PrintingSpecifications ......................................1-2
1.2.2 PaperHandlingSpecifications................................1-4
1.2.3 PaperSpecifications........................................1-4
1.2.4 InkCartridgeSpecifications..................................1-6
1.2.5 ElectricalSpecifications.....................................1-7
1.2.6 EnvironmentalSpecifications.................................1-7
1.2.7 Reliability..................................................1-8
1.2.8 Safety Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.2.9 AcousticNoise.............................................1-8
1.2.10 PhysicalSpecifications.....................................1-8
1.3 INTERFACE SPECIFICATIONS 1-9
1.3.1 ParallelInterfaceSpecifications...............................1-9
1.4 OPERATION CONTROLS 1-11
1.4.1 ControlPanel .............................................1-11
1.4.2 PanelOperationandBuilt-inFunction.........................1-11
1.4.3 DefaultSettings...........................................1-14
1.4.3.1 Setting Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
1.4.3.2 Setting Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.4.4 ErrorConditions...........................................1-18
1.4.5 PrinterInitialization ........................................1-18
1.4.5.1 Hardware Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.4.5.2 Sofware Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.4.5.3 PanelInitialization...................................1-18
1.5 MAIN CONPONENTS 1-19
1.5.1 MainControlBoard(C160MainControlBoard) .................1-19
1.5.2 PowerSupplyBoard(C160PSB/PSEBoard)....................1-20
1.5.3 C160I/FBoard ............................................1-20
1.5.4 PrinterMechanism((M-4C10).................................1-21
1.5.5 Housing..................................................1-21
Rev. A 1-i

List of Figures
Figure1-1.ExteriorViewoftheStylusColorIIs(820).................. 1-1
Figure1-2.NozzleConfiguration................................... 1-2
Figure1-3.PrintableArea......................................... 1-4
Figure1-4.PaperSelectLever..................................... 1-5
Figure1-5.Temperature/HumidityRange........................... 1-7
Figure1-6.DataTransmissionTiming.............................. 1-9
Figure1-7.ControlPanelAppearance............................. 1-11
Figure 1-8. C160 Main Control Board Component Layout . . . . . . . . . . . . . 1-19
Figure1-9.C160PSB/PSEBoardComponentLayout ................ 1-20
Figure1-10.C160I/FBoardComponentLayout..................... 1-20
Figure1-11.M-4C10PrinterMechanism............................ 1-21
Figure1-12.Housing............................................ 1-21
List of Tables
Table1-1. PrintSpeedandPrintableColumn........................ 1-2
Table1-2.CharacterTables....................................... 1-3
Table1-3. PaperSpecifications ................................... 1-4
Table1-4. AdjustLeverSettings................................... 1-5
Table1-5. PaperSelectLeverSettings ............................. 1-5
Table1-6. BlackI/CSpecifications................................. 1-6
Table1-7. ColorI/CSpecifications................................. 1-6
Table1-8. RatedElectricalRanges................................. 1-7
Table1-9. AcceptableEnvironmentalConditions..................... 1-7
Table 1-10. Siganal and Connector Pin Assignment for Parallel I/F . . . . . 1-10
Table1-11. PanelOperation..................................... 1-11
Table1-12. Built-inFunctionsonthePanel......................... 1-12
Table 1-13. Button Operations in Default Setting Mode. . . . . . . . . . . . . . . 1-12
Table1-14. ErrorIndicators...................................... 1-13
Table 1-15. Default Setting Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Table1-16. LanguageSelections................................. 1-15
Table1-17.FeatureSelections.................................... 1-16
Table1-18. CharacterTableSelection............................. 1-17
1-ii Rev. A

1.1 FEATURES
The Stylus Color IIs printer is a color ink jet dot matrix printer that comes with a 64-nozzle black printhead
and a 60-nozzle CMY color printhead, either of which can be installed in the printer. The Stylus 820 version
of the same printer comes standard with only the 64-nozzle black printhead; however, the CMY color
printhead can be purchased as an optional upgrade. Whenever this manual mentions the Stylus Color IIs, its
descriptions are equally applicable to the Stylus 820. The major printer features are:
❏High-quality color print
-720 dpi printing
-720 dpi printing on plain paper
-720, 360 dpi printing on special coated paper
(Use the monochrome head only with plain paper)
❏High-speed print
-LQ 125 cps (monochrome head)
-LQ 170 cps (CMY head, using one-pass printing)
Note: The CMY head prints 360 dpi printing in three passes.
❏Built-in auto sheet feeder
-Plain paper (Can be installed up to the hopper guide marker.)
-Transparency film (Can be installed up to the hopper guide marker.)
-Glossy paper (1-sheet only)
-Coated paper (Can be installed up to the hopper guide marker.)
-Envelopes (30 sheets)
-Postcards (30 sheets)
❏Built-in I/F
-Parallel I/F only (8-bit parallel: IEEE P1284 mode)
❏Easy setup
-No DIP switches
❏3 scalable fonts and 3 LQ fonts standard
-Roman T, Sans Serif H, Roman, Sans Serif (scalable)
-Roman, Sans Serif, Courier, Prestige, Script (LQ, bitmap)
❏Character tables
-9 character tables (standard version)
-15 character tables (NLSP version)
❏Low running cost
The figure below shows the Stylus Color IIs.
Figure 1-1. Exterior Viewing of Stylus Color IIs(820)
Stylus Color IIs / Stylus 820 Product Description
Rev. A 1-1

1.2 SPECIFICATIONS
This section provides statistics and other detailed information for the printer.
1.2.1 Printing Specifications
Print system: On-demand ink jet system
Nozzle configuration: 64 nozzles (10 ×2+11×4 standard ): monochrome
60 nozzles (20 ×3 standard): color
Printing direction: Bidirectional with logic-seeking
Table 1-1. Print Speed and Printable Columns
Character
Pitch
Printable
Columns Printing Speed (cps)
Monochrome CMY
10 cpi (Pica) 80 125 170
12 cpi (Elite) 96 150 204
15 cpi 120 188 255
17 cpi (Pica condensed) 136 214 290
20 cpi (Elite condensed) 160 250 340
#1 #1 #1
#2 #2 #2
#19
#20
#19
#20 #20
#19
#1 #2 #3
#4
#5
#6
#64
#61
#59 #62 #63
#60
(Row M) (Row C) (Row Y)
(A) (B) (C) (D) (E) (F)
120 dpi 360 dpi
120 dpi
Figure 1-2. Nozzle Configuration
Product Description Stylus Color IIs / Stylus 820
1-2 Rev. A