Epson stylus iis 820 schematic

EPSONTERMINALPRINTER

StylusTMCOLOR IIs&StylusTM820

SERVICEMANUAL

EPSON

4005245

NOTICE

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.

-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-

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

Stylus Color IIs / Stylus 820 Product Description

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)

Rev. A 1-1

Product Description Stylus Color IIs / Stylus 820

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

120 dpi

360 dpi

#19

#1 #1

#2 #2 #2

#19

#20

#19

#20 #20

(Row M) (Row C) (Row Y)

#59

#60

(A) (B) (C) (D) (E) (F)

#61

#64

#62

#63

Figure 1-2. Nozzle Configuration

Printing direction: Bidirectional with logic-seeking

Table 1-1. Print Speed and Printable Columns

Character

Pitch

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

Printable Columns

Printing Speed (cps)

Monochrome CMY

1-2 Rev. A

Stylus Color IIs / Stylus 820 Product Description

Character tables: Legal and 14 international sets

Table 1-2. Character Tables

Bitmap Fonts Scalable Fonts

Character Tables

Italic PC437 (U.S./Standard Europe) PC850 (Multilingual) PC860 (Portuguese)

Standard

NLSP

Fonts: Bitmap LQ fonts

PC861 (Icelandic) PC863 (Canadian-French) PC865 (Nordic) Abicomp BRASCII Italic PC437 (U.S./Standard Europe) PC850 (Multilingual) PC437 (Greek) PC852 (East Europe) PC853 (Turkish) PC855 (Cyrillic) PC857 (Turkish) PC866 (Russian) PC869 (Greek) MAZOWIA (Poland) Code MJK (Czecho/Slovakia) ISO 8859-7 (Latin/Greek) ISO Latin 1T (Turkish) Bulgaria (Bulgaria)

- EPSON Roman (10 cpi/12 cpi/15 cpi/Proportional)

- EPSON Sans Serif (10/12/15/Proportional)

- EPSON Courier (10/12/15)

EPSON Roman EPSON Sans Serif EPSON Courier

Supported Supported Supported

Supported Supported Not supported

EPSON Roman EPSON Sans Serif

EPSON Roman T EPSON Sans Serif H

Scalable fonts

- EPSON Roman 10.5 points, 8 ∼ 32 points (in units of 2 points)

- EPSON Sans Serif 10.5 points, 8 ∼ 32 points (in units of 2 points)

- EPSON Roman T 10.5 points, 8 ∼ 32 points (in units of 2 points)

- EPSON Sans Serif H 10.5 points, 8 ∼ 32 points (in units of 2 points)

Control codes: ESC/P 2 and expanded raster graphics codes Input data buffer: 0.5KB or 64KB

Rev. A 1-3

Product Description Stylus Color IIs / Stylus 820

1.2.2 Paper Handling Specifications

Feeding method: Friction feed paper is fed from the built-in auto sheet feeder (ASF). Line spacing: 1/6 inch feed or programmable in 1/360 inch minimum increments. Paper path: Cut sheets are fed from the built-in auto sheet feeder (ASF).

Top in and front out.

Feeding speed: 102 msec. (at 1/6-inch feed pitch).

1.2.3 Paper Specifications Table 1-3. Paper Specifications

Cut Sheets

Envelopes

Transparencies

A4 Letter Legal No. 10 DL

Width 210 mm 216 mm 216 mm 240 mm 220 mm

Length 297 mm 279 mm 358 mm 104 mm 110 mm

LM Left margin

RM Right margin

TM Top margin

BM Bottom margin

3 mm or more

14 mm or more

3 mm or more

14 mm or more

3 mm or more

14 mm or more

3 mm or more

14 mm or more

3 mm or more

14 mm or more

Figure 1-3. Printable Area

1-4 Rev. A

Paper In

Paper Out

Manual Feed

Auto Feed

Hopper

Paper Select Lever

Thicker Paper

Thinner Paper

Stylus Color IIs / Stylus 820 Product Description

The adjust lever on the upper case must be set to the proper position for the paper thickness, as shown in Table 1-4.

Table 1-4. Adjust Lever Settings

Lever Position Paper Paper Thickness

Front

(0 position)

Rear

(+ position)

Also the paper select lever on the upper case must be set to the proper position for the paper varieties shown in Table 1-5.

Normal position 0 mm

Table 1-5. Paper Select Lever Settings

Specifications for the Medium

PF Mode Cut Sheets

Thick paper (Rear) NO OK

ASF Feed

Thinner paper (Front) OK NO Thick paper (Rear) OK OK

Manual Feed

Thinner paper (Front) NO NO

Lever Position

0.62 mm

Envelopes

Postcards

Figure 1-4. Paper Select Lever

Note:

Rev. A 1-5

“OK” means paper can be used and “NO” means paper cannot.

Product Description Stylus Color IIs / Stylus 820

1.2.4 Ink Cartridge Specifications

Table 1-6. Black I/C Specifications

Item Specifications

Type Exclusive cartridge Color and Weight Ink Life High-quality ink produces 800 thousand characters Validity 2 years (sealed in package) / 6 months (out of package)

Storage Temperature

Dimensions

Approximately 54 g (internal ink weight is 36 g ± 0.5 g)

❏ –30 to 40° C(−22 ∼ 104° F) (Storage: a month or less at 40° C (104° F)) ❏ –20 to 40° C(−15 ∼ 104° F) (Transit: a month or less at 40° C (104° F)) ❏ –30 to 60° C(−22 ∼ 140° F) (Transit: 120 hours or less at 60° C (140° F))

30.0 (W) × 58.0 (D) × 38.5 ± 0.3 (H) mm

Table 1-7. Color I/C Specifications

Item Specifications

Type Exclusive cartridge Color and Weight Ink Life 100% solid pattern: A4 — 16 sheets / each color Validity 2 years (sealed in package) / 6 months (out of package)

Storage Temperature

Approximately 70 g (internal ink weight is 12.8 g ± 0.5 g)

Dimensions

42.9 (W) × 56.5 (D) × 38.5 ± 0.3 (H) mm

1-6 Rev. A

80%

55%

20%

Humidity (% RH)

Guaranteed Range

(Degrees)

10 27 35

Stylus Color IIs / Stylus 820 Product Description

1.2.5 Electrical Specifications Table 1-8. Rated Electrical Ranges

Specification 120 V Version 220 - 240 V Version

Rated voltage 120 VAC 220 - 240 VAC Input voltage range Rated frequency range Input frequency range

103.5 ∼ 132 V 198 ∼ 264 V 50 ∼ 60 Hz 50 ∼ 60 Hz

49.5 ∼ 60.5 Hz 49.5 ∼ 60.5 Hz

Rated current 0.5 A 0.3 A Power consumption

Insulation resistance

Dielectric strength

Approx. 13 W

(self-test with 10-cpi LQ characters)

10 MΩ, minimum

(applying 500 VDC between AC line

and chassis)

1000 VAC rms for 1 minute or

1200 VAC rms for 1 second

(between AC line and chassis)

(self-test with 10-cpi LQ characters)

(applying 500 VDC between AC line

(between AC line and chassis)

Approx. 13 W

10 MΩ, minimum

and chassis)

1500 VAC rms for 1 minute

1.2.6 Environmental Conditions Table 1-9. Acceptable Environmental Conditions

Condition Operating Non Operating

*1, 3

−20 ∼ 60° C (−4 ∼ 122° F) 5 ∼ 85% RH

Temperature Humidity

10 ∼ 35° C (50 ∼ 95° F)

20 ∼ 80% RH Shock resistance 1G (within 1 msec.) 2G (within 2 msec.) Vibration resistance 0.15 G 0.50 G

: For printer operation, conditions must be in the range shown in the figure below.

: These conditions are applicable when the printer is in its shipping container.

: Without condensation.

*2, 3

Figure 1-5. Temperature / Humidity Range

Rev. A 1-7

Product Description Stylus Color IIs / Stylus 820

1.2.7 Reliability

Total print volume: 25,000 pages (A4, letter) Printhead life: 500 million dots/nozzle (color and monochrome)

1.2.8 Safety Approvals

Safety standards: 120 V version: UL1950 with D3,

CSA C22.2 # 950 with D3

220-240 V version: EN 60950 (TÜV, SEMKO, DEMKO,

NEMKO, SETI)

Radio frequency interference (RFI): 120 V version: FCC Part 15 Subpart B Class B

220-240 V version: Vfg.243 (VDE0878 part 3, part 30)

EN55022 (CISPR PUB. 22) class B CSA C108.8

1.2.9 Acoustic Noise

Level: Approximately 45 dB (A) (Per ISO 7779)

1.2.10 Physical Specifications

Dimensions (W × D × H): 396.7 mm (W) × 205.6 mm (D) × 144.0 mm (H) Weight: About 3.9 kg (8.6 lb.), excluding head and ink cartridge

1-8 Rev. A

Stylus Color IIs / Stylus 820 Product Description

1.3 INTERFACE SPECIFICATIONS

The Stylus Color IIs is standard-equipped with an 8-bit parallel and serial interface.

1.3.1 Parallel Interface Specifications

Data format: 8-bit parallel Synchronization: By Handshaking: By BUSY and Signal level: TTL compatible level Adaptable connector: 36-pin 57-30360 (Amphenol) or equivalent

STROBE pulse synchronization

ACKNLG signals

BUSY

ACKNLG

5 µsec (min.)

DATA

STROBE

0.5 µsec (min.)

Figure 1-6. Data Transmission Timing

Data transmission timing: See Figure 1-6.

0 µsec(min.)

Note:

The Busy signal is active (HIGH) under the following conditions:

The

The PE signal is active (HIGH) under the following conditions:

Transition time (rise time and fall time) of every input signal must be less than 0.2 µs.

❏ During data reception (See Figure 1-6.) ❏ When the input buffer is full ❏ When the ❏ During initialization ❏ When the ❏ During the self-test mode ❏ During the demonstration mode ❏ During the default setting mode ❏ When a fatal error occurs

ERROR signal is active (LOW) under the following conditions:

❏ When a paper-out error occurs ❏ When a no ink cartridge error occurs ❏ When a fatal error occurs

❏ When a paper-out error occurs ❏ When a fatal error occurs

INIT input signal is active

ERROR or PE signal is active

Rev. A 1-9

Product Description Stylus Color IIs / Stylus 820

Table 1-10 shows the connector pin assignments and signal functions of the 8-bit parallel interface.

Table 1-10. Signal and Connector Pin Assignments for Parallel Interface

Pin No. Signal Name I/O* Description

STROBE pulse is used to read data from the host

The

2-9 DATA 1-8 I

11 BUSY O

STROBE I

ACKNLG O

computer. The pulse width must be 0.5 µs or more. Normally, it is HIGH, and data is latched with the rising edge of this signal.

DATA 1-8 are parallel data bits. When one of these signals is HIGH, the data bit is 1; when LOW, the data bit is 0. The most significant bit (MSB) is DATA 8. The signal state must be maintained for 0.5 µs on either side of the signal’s active edge.

ACKNLG is an acknowledge pulse with a width of approximately 10 µs. This signal goes LOW upon the

completion of data reception to indicate that the printer is ready to receive further data.

The BUSY signal informs the host computer of the printer’s status. When this signal is HIGH, the printer cannot accept any more data.

STROBE

12 PE O 13 SLCT O

32 35 +5 V —

17 CHASSIS — Chassis ground.

16 GND — Signal ground. 19-30 — — — 33,36 — — Not used.

15,18,34 — — —

AFXT I

INIT I

ERROR O

This signal indicates whether paper is available in the printer or not. A HIGH level indicates no paper.

Pulled up to +5 V through a 1.0 KΩ resistor in the printer. If this signal is set to LOW, the printer automatically performs

one line feed upon receipt of a CR (carriage return) code. The status of this signal is checked only at power on and initialization.

If this signal goes LOW, the printer is initialized. The pulse width of this signal must be 50 µs or more.

This signal goes LOW if the printer has a fatal error or runs out of paper.

Pulled up to +5 V through 1.0 KΩ resistor in the printer.

* The I/O column indicates the direction of the signal as viewed from the printer.

1-10 Rev. A

Stylus Color IIs / Stylus 820 Product Description

1.4 OPERATIONS

This section describes the basic operations of the printer.

1.4.1 Control Panel

The control panel for this printer has 3 non-lock-type push buttons, and 5 LED indicators for easy operation of the various printer functions.

Power

Error

Condensed

Economy

Alt

Load / Eject

Figure 1-7. Control Panel Appearance

1.4.2 Panel Operation and Built-in Function

You can activate the following modes by doing the procedure in table 1-11 and 1-12.

Table 1-11. Panel Operation

Button ^

Operations

Single Button Operations Combined with Alt Button Pressed and released Held down 3 seconds Pressed and released

Pause

Cleaning

Alt

Load/Eject

Pause

Rev. A 1-11

No function

Load/Eject

Pause

I/C or head unit

replacement

No function Economy/Condensed

Reset Cleaning

———

Product Description Stylus Color IIs / Stylus 820

Table 1-12. Built-in Functions on the Panel

Button Alt

Load/Eject Pause Alt + Load/Eject Load/Eject + Pause Pause + Alt Pause + Load/Eject + Pause Other combinations

Table 1-13. Button Operations in Default Setting Mode

Button Alt

Pause

Function

Demonstration printing Self-test Default setting mode (with printing) Non-smear printing Data dump mode (Hex mode) Default setting mode (without printing) Reset to the default settings Not available

Function

Move to the next item or menu Set item

1-12 Rev. A

Stylus Color IIs / Stylus 820 Product Description

Indicators

Power Error

Condensed Economy Pause

LED combinations See Table 1-14.

On when printer is on. Blinks during power on and off. On when printer encounters an error, such as ink end, paper out, paper

jam, etc. On when printer is in the condensed mode (50% or 80%). On when printer is in the economy mode. On when printer is paused.

Table 1-14. Error Indications

Printer Status

Pause Economy Condensed Panel reset accepted

Ink low (printable)

Ink out (unprintable)

Power On

On On On On Blinks

Indicators +

Error Condensed Economy Pause

———On — — On —

On On — —

Blinks On On On

(rapidly)

On — — On

———

Paper out Paper jam Head, I/C replacement Head, I/C not installed

(in replacement mode) Head, I/C not installed Carriage control error Maintenance request

On On On On

On On On

Off — — On Off — Blink On

Blinks — — Blinks

Blinks Off Off Blinks Blinks Blinks Off Blinks Blinks Blinks Blinks Blinks

Rev. A 1-13

Product Description Stylus Color IIs / Stylus 820

1.4.3 Default Settings

The printer can save some printer setting parameters that define its functions at initialization. You can change these parameters using the printer’s default setting mode.

1.4.3.1 Default Setting Items

You can use default setting mode to change settings listed in the table below. Activate default-setting mode by holding down the

turning on the printer.

Pause

or the

Pause

and

Alt

buttons (for default setting mode without printing) while

Table 1-15. Default Setting Items

Item

Character Tables

^ ^ ^

Typestyles

Selections

Standard Version +

Italic USA Italic France Italic Germany Italic UK Italic Denmark Italic Sweden

NLSP Version + Italic USA

Italic France Italic Germany Italic UK Italic Denmark Italic Sweden Italic Italy Italic Spain

Roman Sans Serif

Italic Italy Italic Spain

PC437 PC850 PC860 PC863

PC437 PC850 PC853 PC857 PC437 Greek PC855 PC866 PC852

Courier Roman T (PS) Sans Serif H (PS)

PC865 PC861 BRASCII Abicomp

^ ^

PC869 ISO 8859-7 ISO Latin 1T MAZOWIA Code MJK Bulgaria

10 CPI (10 CPI, Condensed off) 12 CPI (12 CPI, Condensed off)

Character Pitches

15 CPI (15 CPI, Condensed off)

17.1 CPI (10 CPI, Condensed on)

20 CP I(12 CPI, Condensed on) Proportional (PS, Condensed off)

Auto

Print Direction

Bidirectional

Uni-directional

Network I/F Mode

1-14 Rev. A

Off (Usual environment) On (Network environment)

Stylus Color IIs / Stylus 820 Product Description

Table 1-15. Default Setting Items (Continued)

Item

Auto line feed

Loading position

Thick paper

Note:

The underlined value is the factory setting.

Off On

8.5 mm 3 mm

Envelopes Index card (portrait)

Contents

1.4.3.2 Changing the Default Settings

To change the printer’s default settings:

Hold down the firmware version and describes how to select the language used to print messages. You can select a language by pressing the

Pause

button and turn on the printer. The printer outputs a sheet that shows the

Alt

button, and set it by pressing the

Pause

button. (See Table 1-16.)

Table 1-16. Language Selection

Error LED

Condensed

LED

Economy

LED

English

Francias

Deutsch

Italiano

Español

Press the prints a table showing how to change printer settings.

Press the by the to the next setting, and the three font LEDs change according to the selection.

4. After you set all values, turn the printer off to save the new settings.

Pause

Alt

Error,Condensed

button. The printer prints the current settings using the selected language. It also

button to advance through the setting menus. The current printer settings are indicated

, and

On Off Off

Off On Off

On On Off

Off Off On

On Off On

Economy

LEDs. Each time you press the

Pause

button, you advance

Rev. A 1-15

Product Description Stylus Color IIs / Stylus 820

Table 1-17. Feature Selections

Feature/ Menu

Character Table

Print Direction

^ ^ Network

I/F Mode ^ Auto Line

Feed ^ Loading

Position ^ Font ^ ^ ^ ^ Pitch ^ ^ ^ ^ ^ Thick Paper ^

Setting Value

Error

LED

On Off Off See Table 1-18. +

Off On Off

On On Off

Off Off On

On Off On

Off On On

On On On

Off Off Off

Condensed

LED

Economy

LED

Setting

Auto Blinks Off Off Bi-D Blinks On Off

Uni-D Blinks Off On

Off Blinks Off Off On Blinks On Off Off Blinks Off Off On Blinks On Off

3 mm Blinks Off Off

8.5 mm Blinks On Off Roman Blinks Off Off

Sans serif Blinks On Off

Courier Blinks Off On

Roman T Blinks On On

Sans serif H Off Blinks Off

10 CPI Blinks Off Off 12 CPI Blinks On Off 15 CPI Blinks Off On

17.1 CPI Blinks On On 20 CPI Off Blinks Off

Proportional On Blinks Off

Envelopes Blinks Off Off

Index cards Blinks On Off

Error

LED

Condensed

LED

Economy

LED

1-16 Rev. A

Stylus Color IIs / Stylus 820 Product Description

Table 1-18. Character Table Selection

Version

Common ^ ^ ^ ^ ^ ^ ^ ^ ^ Standard ^ ^ ^ ^ ^ NLSP ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^

Settings

Italic U.S.A. Blinks Off Off

Italic France Blinks On Off

Italic Germany Blinks Off On

Italic U.K. Blinks On On

Italic Denmark 1 Off Blinks Off

Italic Sweden On Blinks Off

Italic Italy Off Blinks On

Italic Spain 1 On Blinks On

PC437 Off Off Blinks PC850 On Off Blinks PC860 Off On Blinks PC863 On On Blinks PC865 Blinks Blinks Off PC861 Blinks Blinks On

BRASCII Off Blinks Blinks

Abicomp On Blinks Blinks

PC437 Greek Blinks Blinks Off

PC853 Off On Blinks PC855 Blinks Blinks Off PC852 On Blinks Blinks PC857 On On Blinks PC866 Off Blinks Blinks

PC869 Blinks Off Blinks MAZOWIA Off On On Code MJK On On On

ISO 8859-7 Blinks On Blinks

ISO Latin 1T Blinks Blinks Blinks

Bulgaria Off Off Off

Error LED

Condensed

LED

Economy

LED

Rev. A 1-17

Product Description Stylus Color IIs / Stylus 820

1.4.4 Error Conditions

The printer can detect various errors and indicate them with LEDs. Refer to Table 1-14.

1.4.5 Printer Initialization

There are three initialization methods: hardware initialization, software initialization, and panel initialization.

1.4.5.1 Hardware Initialization

Hardware initialization is performed by:

- Turning on the printer.

- Sending the parallel interface the (If the

INIT signal is active when the printer is turned on, hardware initialization is started when the INIT

signal becomes inactive.) When hardware initialization is performed:

- The printer mechanism is initialized.

- Input data buffer is cleared.

- Downloaded character definitions are cleared.

- Print buffer is cleared.

- Default values are set.

INIT signal.

1.4.5.2 Software Initialization

Software initialization is performed upon receipt of the control code ESC @. When software initialization is performed:

- The print buffer is cleared.

- Default values are set.

1.4.5.3 Panel Initialization

Panel initialization is performed by holding down the Alt button for 3 seconds. When the panel initialization is performed:

- The input data buffer is cleared.

- The print buffer is cleared.

- Default values are set.

1-18 Rev. A

CN1

CN2

CN3

CN4

CN5

CN6

CN7

CN8

SW3 SW2 SW1

CPU M3772051 (IC2)

E05B08 (IC1)

4M or 8M Bit PROM (IC3)

1M Bit PSRAM (IC4)

8M Bit CG-ROM (IC5)

Stylus Color IIs / Stylus 820 Product Description

1.5 MAIN COMPONENTS

The main components of the Stylus Color IIs are:

❏ Printer mechanism (M-4C10) ❏ Main control board (C160 MAIN Board) ❏ Power supply unit (C160 PSB/PSE Board) ❏ Control panel board (C160 I/F Board) ❏ Housing

1.5.1 Main Control Board (C160 MAIN Board)

The main control board (C160 MAIN Board) consists of an M37720 16-bit CPU, E05B08 gate array, a program ROM (4M), a PS-RAM (1M), a mask ROM (4M or 8M: If a 4M-bit program ROM is mounted on the board, an 8M-bit CG-ROM is mounted in location IC5, and if an 8M-bit program ROM is mounted on the board, there is no CG-ROM in location IC5.) and a 1K EEPROM. The reset IC (M51955 and PST 592) is equipped with both a logic system and a power system.

Note:

During servicing, when you replace the program ROM, always install an 8M-bit program ROM regardless of the components mounted on that particular board. When you do this, the CG-ROM in location IC5 is ignored.

Rev. A 1-19

Figure 1-8. C160 Main Control Board Component Layout

CN1

CN2

JAPAN version only (Serial I/F)

Product Description Stylus Color IIs / Stylus 820

1.5.2 Power Supply Board (C160 PSB/PSE Board)

The power supply board (C160 PSB/PSE Board) consists of an RCC switching regulator circuit. This board does not have a power switch connected to the secondary circuit like the Stylus Color series. Thus, if the printer is turned off, it cannot continue to operate in order to perform the head capping operation.

Q1 (FET)

C11

Power SW

Trans (T1)

Figure 1-9. C160 PSB/PSE Board Component Layout

1.5.3 Interface Board (C160 I/F Board)

Filter (L1)

CN2

Photo Coupler (PC1) Photo Coupler (PC2)

Fuse (F1)

CN1

Choke Cil (C1)

There is an exclusive interface board to receive/transmit print data between the host computer and printer.

Figure 1-10. C160 I/F Board Component Layout

1-20 Rev. A

Upper Case

Eject Paper Stacker

M4C10 Mechanism Space

Waste Ink Drain Tank

Stylus Color IIs / Stylus 820 Product Description

1.5.4 Printer Mechanism (M-4C10)

The M-4C10 printer mechanism is equipped with a replaceable 64-nozzle black printhead and 60-nozzle color (CMY) printhead, and it can print at a high resolution (720 dpi) using the special coated paper.

Figure 1-11. M-4C10 Printer Mechanism

1.5.5 Housing

The Stylus Color IIs housing consists of the printer cover, upper case, and lower case. Attached to the housing are the front paper support and ejected paper support with paper separator.

Figure 1-12. Housing Component Layout

Rev. A 1-21

Chapter 2 Operating Principles

Table of Contents

2.1 OVERVIEW 2-1

2.2 OPERATING PRINCIPLES OF THE PRINTER MECHANISM 2-1

2.2.1 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2.2 Printing Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2.3 Carriage Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2.3.1 Platen Gap Adjust Laver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.2.3.2 Paper Select Lever. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2.4 Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.5 Ink System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.2.6 Pump Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2.2.7 Cap Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.2.8 Wiping Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

2.2.9 Carriage Lock Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.3 OPERATING PRINCIPLES OF THE ELECTRICAL CIRCUITS 2-17

2.3.1 Operating Principles of the Power Supply Circuit . . . . . . . . . . . . . . . 2-18

2.3.2 Operating Principles of the Main Control Circuit . . . . . . . . . . . . . . . . 2-20

2.3.2.1 Reset Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

2.3.2.2 Sensor Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

2.3.2.3 Carriage Motor Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

2.3.2.4 Paper Feed Motor Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . 2-25

2.3.2.5 Printhead Driver Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

Rev. A 2-i

+ 99 hidden pages

Epson stylus iis 820 schematic

PRECAUTIONS

REVISION SHEET

TABLE OF CONTENTS

1.2 SPECIFICATIONS