Epson Stylus Color 660 User manual

EPSONStylusCOLOR660
Color ink jet printer
SEJ99005

SERVICE MANUAL
SERVICE MANUALSERVICE MANUAL
SERVICE MANUAL

Notice:
n All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
n The contents of this manual are subject to change without notice.
n 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.
n 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.
Copyright © 1999 SEIKO EPSON CORPORATION. Printed in Japan.

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 UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR
ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL
INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON
POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING
PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT
TO THE POWER SOURCE.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR
REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS 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 660.
The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions
on the preceding page. The chapters are organized as follows:
CHAPTER 1. PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the product.
CHAPTER 3. TROUBLESHOOTING
Provides the step-by-step procedures for troubleshooting.
CHAPTER 4. DISASSEMBLY AND ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the
product.
CHAPTER 5. ADJUSTMENTS
Provides Epson-approved methods for adjustment.
CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-approved
lubricants and adhesives required for servicing the product.
CHAPTER 7. APPENDIX
Provides the following additional information for reference:
• EEPROM Address Map
• Connector Pin Assignments
• Circuit Diagram

Revision Status
Revision Issued Date Description
A August 25, 1999 First Release

CHAPTER
1
PRODUCTDESCRIPTION

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1.1 FEATURES
EPSON Stylus Color 660/660 are designed for PC users at home
and low price for hat high performance. Also, Stylus Color 440 printer
has the same high color print quality (720 X 720dpi) as Stylus ProXL,
and
Stylus Color 640,740,660 have the same high color print
quality (1440 X 720) as Stylus Color 600 and Stylus Pro 5000. The
major printer features are;
o High color print quality
n 720 (H) x 720 (V) dpi printing (for Stylus Color 440)
n 1440 (H) X 720 (V) dpi printing (for Stylus Color 640, 660, 740)
n 4 color printing (YMCK)
n Traditional and New Microwave
n Black 64 nozzles, CMY 21 nozzles (for Stylus Color 440)
n Black 64 nozzles, CMY 32/color nozzles (for Stylus Color 640,
660)
n Black 144 nozzles, CMY 48/color nozzles (for Stylus Color 740)
o Built-in auto sheet feeder
n Holds 100 cut-sheets (64g/m2)
n Holds 10 envelopes
n Holds 30 transparency films
n Holds 65 special papers
o High-speed print
n 200 cps (for Stylus Color 440, 740)
n Normal 200 cps, Draft 400 cps (only for Stylus Color 640, 660)
n By using head drive frequency 14.4KHz, printing speed is twice
faster than Stylus Color.
o Compact size
n 429mm (W) x 231mm (D) x 155mm (H) (for Stylus Color 440)
n 429mm (W) x 231mm (D) x 157mm (H) (for Stylus Color 640,
660)
n 429mm (W) x 261mm (D) x 157mm (H) (for Stylus Color 740)
n Weight: 5.2Kg (for 3 models)
o Acoustic noise
n Approximately 45 dB (for Stylus Color 440)
n Approximately 47 dB (for Stylus Color 640, 660, 740)
o Interface
n Bi-directional parallel I/F IEEE-1284 level 1 device (for 3
models)
n Mac serial I/F up to approx. 1800 kbps (only for Stylus Color
740)
n USB (only for Stylus Color 740)
o One unit combined black and CMY head
o Windows exclusive (for Stylus Color 440, 640, 660)
o Standard, NLSP, 5 Scaleable fonts (only for Stylus Color 740)
o Stylus Color 660 is the reflesh version based on Stylus
Color 640. The differen e points are as follows;
n Following EEPROM Datas
Address Data
*02H: 03H
*72H: 36H
*73H: 36H
*74H: 30H

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See the Table A-20 to A-26 for EEPROM address map of
EPSON Stylus Color 440/640/740 Servi e Manual.
The rest contents of Product Description is the same as of EPSON
Stylus Color 640/660/740.

CHAPTER
2
OPERATINGPRINCIPLES

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Color 640/660/740.

CHAPTER
3
TROUBLESHOOTING

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The contents of Trouble Shooting is the same as of EPSON Stylus
Color 640/660/740.

CHAPTER
4
DISASSEMBLYANDASSEMBLY

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The contents of Disassembly and Assembly is the same as of EPSON
Stylus Color640/660/740.

CHAPTER
5
ADJUSTMENT

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5.1 Overview
This chapter describes adjustments required for Stylus Color 640/660
when the printer is disassembled and assembled after repair. Refer to
Stylus Color 740/640/440 Service Manual for things that are not
described here.
5.1.1 Required Adjustments
Stylus Color 640/660 requires the following adjustments. (Refer to
Table 5-1) Perform any necessary adjustment referring to the figures
and procedures described throughout this chapter.
Table below shows the actions taken and required adjustments in the
order to be performed.
Table 5-1 Adjustment Required
No. Adjustment Item Conditions
1 Parallelism Adjustment • When you replace or remove the Carriage
guide shaft.
• When you move the parallelism adjustment
bushing.
2Initial Ink Charge • When you replace or remove the printhead.
3 Head Voltage ID Input • When you replace the printhead.
• When you replace the main board.
Note) The values stored in this address are not
erased by EEPROM reset operation.
4Printing Head Angle
Adjustment • When you replace or remove the printhead.
• When you move the printhead angle adjusting
lever.
5 Bi-D Adjustment • When you replace or remove the printhead.
• When you replace the main board.
• When you replace the CR Motor.
Table 5-2 Actions Taken and Adjustment Required
No. ContentofOperation Adjustment Procedure
1 Removal of the printhead 1. Perform initial ink charge.
2. Perform printhead angle adjustment.
3. Perform Bi-d Adjustment.
2Replacement of the printhead 1. Perform Vh voltage writing operation.
2. Perform initial ink charge.
3. Perform printhead angle adjustment.
4. Perform Bi-d Adjustment.
3 Replacement of the main board 1. Perform Vh voltage writing operation.
2. Perform Bi-d adjustment.
Note) After performing the above
adjustment, replace the following parts.
• Ink cartridge
• Waste Ink Pad
The above two kinds of software counter
are erased by replacing the Main board.
4Replacement or Removal of the
Carriage Unit 1. Perform parallel adjustment.
2. Perform printhead angle adjustment.
3. Perform Bi-d adjustment.
5 Replace of the CR Motor 1. Perform Bi-d adjustment.
6Replacement of the Printer
Mechanism 1. Perform Head Voltage ID Input.
2. Perform initial ink charge.
3. Perform Bi-d adjustment.

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5.1.2 Adjustment Tools Required
Table 5-3 below shows adjustment tools for Stylus Color 640/660.
Table 5-3 Adjustment Tools Required
No. Name Adjustment Item Contents/Spec.
1 Thickness Gauge Parallelism Adjustment 1.04 mm
2Adjustment
Program Each Mechanism Settings Exclusive Program;
Stylus COLOR 600 640
660
CAUTION
n Never use the bent (curved or tilted) or rusty
thickness gauge.
n Erase any dirt, grease or obstacles on the thickness
gauge before you use it.

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5.2 Adjustment
This section explains the specific procedures for making the
adjustments using the exclusive adjustment program for Stylus Color
640/660.
5.2.1 Adjustment by Adjustment Program
For this printer, it is necessary to set the correct information for each
printer mechanism in order to maintain consistent printing function and
quality, eliminating differences among each printer mechanism's
characteristics.
Therefore, in case that the combination of the printer mechanism and
main board changes or the printhead is replaced during repair, you
must set and save the correct information to the main board, using the
exclusive adjustment program.
5.2.1.1 About Adjustment Program
The adjustment program (Program name: Stylus COLOR 600 640 660)
enables you to set various values correctly to prevent malfunction and
fluctuation of printing quality and printing function caused by difference
in components and assembly when the printer components are
replaced during repairs. Basic adjustment menu in this program are
shown in Figure 5-1. Options in the Program.
NOTE:This Adjustment Program can not be used in Windows NT
and Dos environment.
Figure 5-1. Options in the Program
Main Menu
Adjustment
Market
destination check
Head voltage ID
input
Head angular
adjustment
Bi-Directional
adjustment
Maintenance Print A4
pattern Recovery
Head cleaning
Initial ink charge
Indication of the
counter value

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5.2.1.2 Entering Stylus COLOR 660 SERVICE PROGRAM
To perform any adjustment, you need to enter the Stylus COLOR 660
SERVICE PROGRAM first. Read the following instructions and these
steps will bring you to the service program screen.
1. Connect the printer and PC and turn on the printer.
2. Insert Disk 1 for the adjustment program to the floppy disk drive.
3. Execute Setup.exe of Disk 1.
4. The Setup Wizard for the adjustment program “EPSON Stylus
COLOR 600/640/660 SERVICE PROGRAM Version 4.0” starts, and
you can follow the direction indicated by the wizard.
5. The Setup Wizard says “Setup Needs The Next Disk.”
6. Take out Disk 1 and insert Disk 2.
7. Program will be installed in your appointed folder.
8. Go to the appointed folder and open the adjustment program.
9. The following screen appears.
Figure 5-2. Initial Screen (1)
10. Choose Stylus Color 660, and click OK. By doing so, the model
name will be written in the EEPROM.
NOTE: If you select wrong model name in the above menu between
Stylus COLOR 640 and 660, the model name will be written
in the EEPROM anyway because SC 640 and 660 have
compatibility. Be careful not to choose wrong model name.
The wrong model name will not be written in EEPROM
between SC 660 and SC 640 or between SC 600 and
SC 660.

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11. In the next screen, choose the market destination according to the
market.
n Standard: All the market except ESP.India and Korea
n ESP.India: for ESP India
n Korea: for EKL
NOTE:When you choose the market destination, the respective dot
size used in the economy mode will be written in the
EEPROM (6E<H>).
Default setting: Normal x 2 dot (Standard)
Normal x 1 dot (ESP. India)
NOTE:When Korea is selected, the setting will be the same as in
the case Standard is selected.
Figure 5-3. Initial Screen (2)
12. Click OK.
13. Following screen appears.
Figure 5-4. Initial Screen (3)
If you want to check this model name, choose “Check
this model name” and click OK. (See step 14)
If you do not need to check the model name or finished
checking, select “Boot this program”. (See step 17)