Epson stylus iis 820 schematic

EPSON TERMINAL PRINTER

StylusTMCOLOR IIs & StylusTM820

SERVICE MANUAL

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 Printing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2.2 Paper Handling Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.2.3 Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.2.4 Ink Cartridge Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.2.5 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.2.6 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.2.7 Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.2.8 Safety Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.2.9 Acoustic Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.2.10 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.3	INTERFACE SPECIFICATIONS	1-9
1.3.1 Parallel Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 1-9
1.4	OPERATION CONTROLS	1-11

1.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.4.2 Panel Operation and Built-in Function. . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.4.3 Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.4.3.1 Setting Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.4.3.2 Setting Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1.4.4 Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.4.5 Printer Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.4.5.1 Hardware Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.4.5.2 Sofware Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.4.5.3 Panel Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1.5 MAIN CONPONENTS

1-19

1.5.1 Main Control Board(C160 Main Control Board) . . . . . . . . . . . . . . . . . 1-19

1.5.2 Power Supply Board(C160 PSB/PSE Board) . . . . . . . . . . . . . . . . . . . . 1-20

1.5.3 C160 I/F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1.5.4 Printer Mechanism((M-4C10). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

1.5.5 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Rev. A

1-i

List of Figures

Figure 1-1. Exterior View of the Stylus Color IIs(820) . . . . . . . . . . . . . . . . . . 1-1 Figure 1-2. Nozzle Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Figure 1-3. Printable Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Figure 1-4. Paper Select Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Figure 1-5. Temperature / Humidity Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Figure 1-6. Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Figure 1-7. Control Panel Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 Figure 1-8. C160 Main Control Board Component Layout . . . . . . . . . . . . . 1-19 Figure 1-9. C160 PSB/PSE Board Component Layout . . . . . . . . . . . . . . . . 1-20 Figure 1-10. C160 I/F Board Component Layout . . . . . . . . . . . . . . . . . . . . . 1-20 Figure 1-11. M-4C10 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 Figure 1-12. Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

List of Tables

Table 1-1. Print Speed and Printable Column . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Table 1-2. Character Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3. Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Table 1-4. Adjust Lever Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Table 1-5. Paper Select Lever Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Table 1-6. Black I/C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Table 1-7. Color I/C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Table 1-8. Rated Electrical Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Table 1-9. Acceptable Environmental Conditions. . . . . . . . . . . . . . . . . . . . . 1-7 Table 1-10. Siganal and Connector Pin Assignment for Parallel I/F . . . . . 1-10 Table 1-11. Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 Table 1-12. Built-in Functions on the Panel. . . . . . . . . . . . . . . . . . . . . . . . . 1-12 Table 1-13. Button Operations in Default Setting Mode . . . . . . . . . . . . . . . 1-12 Table 1-14. Error Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 Table 1-15. Default Setting Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Table 1-16. Language Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 Table 1-17. Feature Selections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 Table 1-18. Character Table Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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				120 dpi	360 dpi
	#1	#1				#1	#2	#3
#1
				#6	#5
#2		#2	#2			#4

#19	#19	#19
	#20	#20	#20
(Row M)	(Row C)	(Row Y)	#60	#59	#61	#62	#63
					#64
			(A)	(B)	(C) (D)	(E)	(F)

Figure 1-2. Nozzle Configuration

Printing direction:		Bidirectional with logic-seeking
		Table 1-1. Print Speed and Printable Columns
		Character	Printable	Printing Speed (cps)
			Columns
		Pitch		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

1-2

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
				EPSON Roman		EPSON Roman		EPSON Roman T
				EPSON Sans Serif		EPSON Sans
								EPSON Sans Serif H
				EPSON Courier		Serif
		Italic
		PC437 (U.S./Standard Europe)
		PC850 (Multilingual)
		PC860 (Portuguese)
Standard		PC861 (Icelandic)			Supported	Supported		Supported
		PC863 (Canadian-French)
		PC865 (Nordic)
		Abicomp
		BRASCII
		Italic
		PC437 (U.S./Standard Europe)			Supported	Supported		Supported
		PC850 (Multilingual)
		PC437 (Greek)
		PC852 (East Europe)
		PC853 (Turkish)
		PC855 (Cyrillic)
NLSP		PC857 (Turkish)
		PC866 (Russian)			Supported	Supported		Not supported
		PC869 (Greek)
		MAZOWIA (Poland)
		Code MJK (Czecho/Slovakia)
		ISO 8859-7 (Latin/Greek)
		ISO Latin 1T (Turkish)
		Bulgaria (Bulgaria)
	Fonts:	Bitmap LQ fonts
		- EPSON Roman			(10 cpi/12 cpi/15 cpi/Proportional)
		- EPSON Sans Serif			(10/12/15/Proportional)
		- EPSON Courier			(10/12/15)
		Scalable fonts			10.5 points, 8 32 points (in units of 2 points)
		- EPSON Roman
		- 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
	PW	Width	210 mm	216 mm	216 mm	240 mm	220 mm
	PL	Length	297 mm	279 mm	358 mm	104 mm	110 mm
	LM	Left margin	3 mm or	3 mm or	3 mm or	3 mm or	3 mm or
			more	more	more	more	more
	RM	Right margin	3 mm or	3 mm or	3 mm or	3 mm or	3 mm or
			more	more	more	more	more
	TM	Top margin	3 mm or	3 mm or	3 mm or	3 mm or	3 mm or
			more	more	more	more	more
	BM	Bottom margin	14 mm or	14 mm or	14 mm or	14 mm or	14 mm or
			more	more	more	more	more

PW

LM	RM
	TM
	PL
	BM

Figure 1-3. Printable Area

1-4

Rev. A

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			Normal position			0 mm
	(0 position)
	Rear						0.62 mm
	(+ 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.
		Table 1-5. Paper Select Lever Settings
							Specifications for the Medium
PF Mode							Cut Sheets	Envelopes
		Lever Position						Postcards
ASF Feed		Thick paper		(Rear)			NO	OK
		Thinner paper (Front)					OK	NO
Manual Feed		Thick paper		(Rear)			OK	OK
		Thinner paper (Front)					NO	NO

Thinner Paper

Paper Select Lever

Manual Feed

Auto Feed	Thicker Paper

Hopper

Paper In

Paper Out

Figure 1-4. Paper Select Lever

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

Rev. A

1-5

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	Approximately 54 g (internal ink weight is 36 g ± 0.5 g)
	Ink Life	High-quality ink produces 800 thousand characters
	Validity	2 years (sealed in package) / 6 months (out of package)
	Storage	–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))
	Temperature
		–30 to 60° C (−22 140° F) (Transit: 120 hours or less at 60° C (140° F))
	Dimensions	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	Approximately 70 g (internal ink weight is 12.8 g ± 0.5 g)
	Ink Life	100% solid pattern: A4 — 16 sheets / each color
	Validity	2 years (sealed in package) / 6 months (out of package)
	Storage	–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))
	Temperature
		–30 to 60° C (−22 140° F) (Transit: 120 hours or less at 60° C (140° F))
	Dimensions	42.9 (W) × 56.5 (D) × 38.5 ± 0.3 (H) mm

1-6

Rev. A

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	103.5 132 V	198 264 V
	Rated frequency range	50 60 Hz	50 60 Hz
	Input frequency range	49.5 60.5 Hz	49.5 60.5 Hz
	Rated current	0.5 A	0.3 A
	Power consumption	Approx. 13 W	Approx. 13 W
		(self-test with 10-cpi LQ characters)	(self-test with 10-cpi LQ characters)
		10 MΩ, minimum	10 MΩ, minimum
	Insulation resistance	(applying 500 VDC between AC line	(applying 500 VDC between AC line
		and chassis)	and chassis)
		1000 VAC rms for 1 minute or	1500 VAC rms for 1 minute
	Dielectric strength	1200 VAC rms for 1 second
			(between AC line and chassis)
		(between AC line and chassis)

1.2.6 Environmental Conditions

Table 1-9. Acceptable Environmental Conditions

Condition	Operating	Non Operating
Temperature	10 35° C (50 95° F) *1	−20 60° C (−4 122° F) *2
Humidity	20 80% RH *1, 3	5 85% RH *2, 3
Shock resistance	1G (within 1 msec.)	2G (within 2 msec.) *2
Vibration resistance	0.15 G	0.50 G *2

*1 : For printer operation, conditions must be in the range shown in the figure below. *2 : These conditions are applicable when the printer is in its shipping container.

*3 : Without condensation.

Humidity
(% RH)
80%			Guaranteed Range
55%
20%
10	27	35	(Degrees)

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 STROBE pulse synchronization
Handshaking:	By BUSY and ACKNLG signals
Signal level:	TTL compatible level
Adaptable connector:	36-pin 57-30360 (Amphenol) or equivalent

BUSY

ACKNLG									0 µsec(min.)
DATA								5 µsec (min.)
STROBE
			0.5 µsec (min.)			0.5 µsec (min.)

0.5 µsec (min.)

Figure 1-6. Data Transmission Timing

Data transmission timing:

See Figure 1-6.

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

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

During data reception (See Figure 1-6.)

When the input buffer is full

When the INIT input signal is active

During initialization

When the ERROR or PE signal is active

During the self-test mode

During the demonstration mode

During the default setting mode

When a fatal error occurs

The 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

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

When a paper-out error occurs

When a fatal error occurs

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

The STROBE pulse is used to read data from the host

computer. The pulse width must be 0.5 μs or more. Normally,

1

STROBE

I

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

2-9

DATA 1-8

I

most significant bit (MSB) is DATA 8. The signal state must

be maintained for 0.5 μs on either side of the

STROBE

signal’s active edge.

ACKNLG is an acknowledge pulse with a width of

10

approximately 10 μs. This signal goes LOW upon the

ACKNLG

O

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

11

BUSY

O

status. When this signal is HIGH, the printer cannot accept

any more data.

12

PE

O

This signal indicates whether paper is available in the printer

or not. A HIGH level indicates no paper.

13

SLCT

O

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

14

AFXT

I

status of this signal is checked only at power on and

initialization.

31

If this signal goes LOW, the printer is initialized. The pulse

INIT

I

width of this signal must be 50 μs or more.

This signal goes LOW if the printer has a fatal error or runs

32

ERROR

O

out of paper.

35

+5 V

—

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

17

CHASSIS

—

Chassis ground.

16

GND

—

Signal ground.

19-30

—

—

—

33,36

—

—

Not used.

15,18,34

—

—

—

*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

Alt

Load / Eject

Pause

Condensed

Economy

Cleaning

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
Alt	No function		I/C or head unit	———
			replacement
Load/Eject	Load/Eject		No function	Economy/Condensed
Pause	Pause		Reset	Cleaning

Rev. A

1-11

Product Description	Stylus Color IIs / Stylus 820
Table 1-12. Built-in Functions on the Panel
Button	Function
Alt	Demonstration printing
Load/Eject	Self-test
Pause	Default setting mode (with printing)
Alt + Load/Eject	Non-smear printing
Load/Eject + Pause	Data dump mode (Hex mode)
Pause + Alt	Default setting mode (without printing)
Pause + Load/Eject + Pause	Reset to the default settings
Other combinations	Not available
Table 1-13. Button Operations in Default Setting Mode
Button	Function
Alt	Move to the next item or menu
Pause	Set item

1-12

Rev. A

Stylus Color IIs / Stylus 820 Product Description

Indicators

Power	On when printer is on. Blinks during power on and off.
Error	On when printer encounters an error, such as ink end, paper out, paper
	jam, etc.
Condensed	On when printer is in the condensed mode (50% or 80%).
Economy	On when printer is in the economy mode.
Pause	On when printer is paused.
LED combinations	See Table 1-14.
	Table 1-14. Error Indications
Printer Status			Indicators			+
^	Power		Error	Condensed	Economy	Pause
Pause	On		—	—	—	On
Economy	On		—	—	On	—
Condensed	On		On	On	—	—
Panel reset accepted	On		Blinks	On	On	On
Ink low (printable)	On		Blinks	—	—	—
			(rapidly)
Ink out (unprintable)	On		On	—	—	On
Paper out	On		Off	—	—	On
Paper jam	On		Off	—	Blink	On
Head, I/C replacement	On		Blinks	—	—	Blinks
Head, I/C not installed	On		Blinks	—	—	Blinks
(in replacement mode)
Head, I/C not installed	On		Blinks	Off	Off	Blinks
Carriage control error	On		Blinks	Blinks	Off	Blinks
Maintenance request	On		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 Pause or the Pause and Alt buttons (for default setting mode without printing) while turning on the printer.

Table 1-15. Default Setting Items

	Item		Selections		+
	Character Tables	Standard Version			+
		Italic USA		Italic Italy	PC865
	^				PC861
		Italic France		Italic Spain
					BRASCII
		Italic Germany		PC437
					Abicomp
		Italic UK		PC850
	^	Italic Denmark		PC860	^
		Italic Sweden		PC863
	^				^
	^	NLSP Version			+
		Italic USA		PC437
		Italic France		PC850	PC869
		Italic Germany		PC853	ISO 8859-7
	^	Italic UK		PC857	ISO Latin 1T
		Italic Denmark		PC437 Greek	MAZOWIA
		Italic Sweden		PC855	Code MJK
		Italic Italy		PC866	Bulgaria
		Italic Spain		PC852
		Roman
	Typestyles	Sans Serif
		Courier			+
		Roman T (PS)
		Sans Serif H (PS)
		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)
	Print Direction	Auto
		Bidirectional			+
		Uni-directional
	Network I/F Mode	Off (Usual environment)			+
		On (Network environment)

1-14

Rev. A

	Stylus Color IIs / Stylus 820	Product Description
	Table 1-15. Default Setting Items (Continued)
	Item	Contents
	Auto line feed	Off
		On
	Loading position	8.5 mm
		3 mm
	Thick paper	Envelopes
		Index card (portrait)

Note: The underlined value is the factory setting.

1.4.3.2 Changing the Default Settings

To change the printer’s default settings:

1.Hold down the Pause button and turn on the printer. The printer outputs a sheet that shows the firmware version and describes how to select the language used to print messages. You can select a language by pressing the Alt button, and set it by pressing the Pause button. (See Table 1-16.)

Table 1-16. Language Selection

	Error		Condensed	Economy
	LED		LED	LED
English		On	Off	Off
Francias		Off	On	Off
Deutsch		On	On	Off
Italiano		Off	Off	On
Español		On	Off	On

2.Press the Pause button. The printer prints the current settings using the selected language. It also prints a table showing how to change printer settings.

3.Press the Alt button to advance through the setting menus. The current printer settings are indicated by the Error, Condensed, and Economy LEDs. Each time you press the Pause button, you advance 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.

Rev. A

1-15

		Product Description					Stylus Color IIs / Stylus 820
				Table 1-17. Feature Selections
	Menu					Setting Value			+
	Feature/		Error	Condensed	Economy	Setting	Error	Condensed	Economy
	Menu		LED	LED	LED		LED	LED	LED
	Character		On	Off	Off	See Table 1-18.			+
	Table
	Print					Auto	Blinks	Off	Off
	Direction
			Off	On	Off
	^					Bi-D	Blinks	On	Off
	^					Uni-D	Blinks	Off	On
	Network					Off	Blinks	Off	Off
	I/F Mode		On	On	Off
	^					On	Blinks	On	Off
	Auto Line					Off	Blinks	Off	Off
	Feed		Off	Off	On
	^					On	Blinks	On	Off
	Loading					3 mm	Blinks	Off	Off
	Position		On	Off	On
	^					8.5 mm	Blinks	On	Off
	Font					Roman	Blinks	Off	Off
	^					Sans serif	Blinks	On	Off
	^		Off	On	On	Courier	Blinks	Off	On
	^					Roman T	Blinks	On	On
	^					Sans serif H	Off	Blinks	Off
	Pitch					10 CPI	Blinks	Off	Off
	^					12 CPI	Blinks	On	Off
	^		On	On	On	15 CPI	Blinks	Off	On
	^					17.1 CPI	Blinks	On	On
	^					20 CPI	Off	Blinks	Off
	^					Proportional	On	Blinks	Off
	Thick Paper		Off	Off	Off	Envelopes	Blinks	Off	Off
	^					Index cards	Blinks	On	Off

1-16

Rev. A

Stylus Color IIs / Stylus 820					Product Description
		Table 1-18. Character Table Selection
	Version	Settings	Error LED	Condensed	Economy
				LED	LED
	Common	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
	Standard	PC860	Off	On	Blinks
	^	PC863	On	On	Blinks
	^	PC865	Blinks	Blinks	Off
	^	PC861	Blinks	Blinks	On
	^	BRASCII	Off	Blinks	Blinks
	^	Abicomp	On	Blinks	Blinks
	NLSP	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

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 INIT signal.

(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.

1.4.5.2Software 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

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.

	CN4	CN5
CN1
	CPU M3772051 (IC2)	CN6
CN2	CN3

SW3

SW2

SW1

E05B08 (IC1)

CN7

8M Bit CG-ROM (IC5)

CN8

1M Bit PSRAM (IC4)

4M or 8M Bit PROM (IC3)

Figure 1-8. C160 Main Control Board Component Layout

Rev. A

1-19

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)

Trans (T1)

CN2

C11

Photo Coupler (PC1)

Photo Coupler (PC2)

Fuse (F1)

Power SW

Filter (L1)

CN1

Choke Cil (C1)

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

1.5.3 Interface Board (C160 I/F Board)

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

CN1

CN2

JAPAN version only (Serial I/F)

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

1-20

Rev. A

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.

Upper Case

Eject Paper Stacker

Waste Ink Drain Tank

M4C10 Mechanism Space

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