File name 400ch1.pdf

Chapter 1 Product Descriptions 1.1 Features...1-1 1.2 Specifications ...1-2 1.2.1 Printing Specification... 1-2 1.2.2 Paper Specification ... 1-4 1.2.2.1 Cut Sheet... 1-4 1.2.2.2 Transparency, Glossy Paper ... 1-4 1.2.2.3 Envelope... 1-4 1.2.2.4 Index Card... 1-4 1.2.3 Adjust Lever Settings (PG adjust lever) ... 1-5 1.2.4 Printing Area ... 1-5 1.2.5 Environmental Condition... 1-8 1.2.6 Ink Cartridge Specifications ... 1-9 1.2.7 Physical Specification... 1-11 1.2.8 Input Data Buffer ... 1-11 1.2.9 Electric Specification ... 1-12 1.2.10 Reliability... 1-12 1.2.11 Safety Approvals... 1-12 1.2.12 Acoustic Noise... 1-13 1.2.13 CE Marking ... 1-13 1.2.14 Printer Language and Emulation ... 1-13 1.3 Interface...1-15 1.3.1 Parallel Interface (Forward Channel) ...

File name 400ch2.pdf

Chapter 2 Operating Principles 2.1 OVERVIEW ...1 2.1.1 Printer Mechanism ... 1 2.1.1.1 Printing Mechanism ... 2 2.1.1.1.1 Printing Process ... 3 2.1.1.1.2 Printing Method ... 4 2.1.1.2 Carriage Mechanism ... 7 2.1.1.2.1 Paper Gap Adjust Mechanism ... 10 2.1.1.3 Paper Feed Mechanism and Pump Mechanism ...11 2.1.1.4 Ink System... 14 2.1.1.4.1 Pump Mechanism ... 15 2.1.1.4.2 Cap Mechanism ... 17 2.2 Electrical Circuit Operating Principles ...18 2.2.1 C206 PSB/PSE Power Supply Board ... 19 2.2.2 C206 MAIN Board... 21 2.2.2.1 Reset Circuits ... 23 2.2.2.2 Sensor Circuits ... 24 2.2.2.3 EEPROM Control Circuits ... 25 2.2.2.4 Timer Circuit ... 26 2.2.2.5 DRAM Control ... 26 2.2.2.6 Print Head Control Circuit... 27 2.2.2.7 PF (Pump) Motor Drive Circuit ... 30 2.2.2.8 CR Motor Drive Circuit ... 31 Chapter2 Operating Principles 2.1 OVERVIEW This section describes Printer Mechanism, electric circuit board (C206 PSB/PSE, C206 Main, C206PNL board) of S

File name 400ch3.pdf

Chapter 3 Disassembly and Assembly 3.1 OVERVIEW ...3-1 3.1.1 Precautions for Disassembling the Printer... 3-1 3.1.2 Tools ... 3-2 3.1.3 Specification for Screws... 3-2 3.1.4 Service Checks After Repair... 3-3 3.2 Disassembly Procedures ...3-4 3.2.1 Removing the Housing ... 3-5 3.2.2 Removing the Board Assembly... 3-6 3.2.3 Removing the Operation Panel ... 3-8 3.2.4 Disassembling the Printer Mechanism... 3-9 3.2.4.1 Removing the Print Head Unit... 3-9 3.2.4.2 Removing the Absorber Tray Assembly ;A...3-11 3.2.4.3 Removing the Pump Assembly and Cap Assembly... 3-12 3.2.4.4 Removing the CR Motor Assembly ... 3-14 3.2.4.5 Removing the PF Motor Assembly... 3-16 3.2.4.6 Removing the ASF Assembly... 3-18 3.2.4.6.1 Removing the Paper Feed Roller Assembly ... 3-19 3.2.4.6.2 Removing the Right and Left LD Roller Assembly ... 3-20 3.2.4.7 Removing the Carriage Assembly... 3-21 3.2.4.8 Removing the PF Roller Assembly... 3-23 3.2.4.9 Removing the PE Paper Detector Assembly... 3-25 3.2.4.10 Removing the HP Detector... 3-26 Chapter3 Disassembly and Assembly 3.1 OVERVIEW This section describes procedures for disassembling the main components of EPSON Stylus Color 400. Unless otherwise specified, disassembly units or components ca be reassembled by reversing the disassembly proced

File name 400ch4.pdf

Chapter 4 Adjustment 4.1 Overview...4-1 4.1.1 Required Adjustments ... 4-1 4.1.2 Required Adjustment Tools ... 4-1 4.2 Adjustment ...4-2 4.2.1 Parallel Adjustment ... 4-2 4.2.2 Adjustment by Adjustment Program ... 4-4 4.2.2.1 Specification of Adjustment Program ... 4-4 4.2.2.2 Initial Ink Charge Operation... 4-5 4.2.2.3 VH Voltage Writing Operation ... 4-6 4.2.2.4 Print Head Angle Adjustment ... 4-7 4.2.2.5 Bi-D Adjustment ... 4-9 Chapter4 Adjustment 4.1 Overview This section describes adjustments required when the printer is disassembled and assembled after repair. 4.1.1 Required Adjustments Stylus Color 400 has following required adjustments.(Refer to table 4-1) Refer to figures for the actual procedure and perform appropriate adjustment for each exchanged unit. Table 4-1. Required Adjustment and Contents No. 1 2 3 Adjustment Item Parallel Adjustment Conditions · When you exchange or remove the Carriage guide shaft. · When you move the parallelism adjustment bush. Initial ink charge · When you exchange or remove the print head. VH voltage Writing Operation · When you exchange or remove the print head. · When you exchange the C206 main board. Note) The values of address are not lost by EEPROM reset operation. Printing Head Angle Adjustment · When you exchange or remove the print head. · When you move the head adjustment lever. Bi-D adjustment · When you exchange or remove the print head. · When you exchange the C206 main board. Table 4-2. Operation and Adjustment Item No. 1 Content of Operation Exchange or Removal of Print head Adjustment Procedure 1)Perform Vh voltage writing operation. (Only when the print head is exchanged) 2)Perform initial ink charge. 3)Perform print head angle adjustment. 4)Perform Bi-d Adjustment. 1)Perform Vh voltage writing operation. 2)Perform Bi-d adjustment. 1)Perform parallel adjustment. 2)Perform print head angle adjustment. 3)Perform Bi-d adjustment. 1)Perform Bi-d adjustment. 1)Perform Vh voltage writing opera

File name 400ch5.pdf

Chapter 5 Troubleshooting 5.1 Troubleshooting...5-1 5.2 Unit Level Troubleshooting ...5-3 5.2.1 Printer does not operate at power on... 5-4 5.2.2 Error is detected ... 5-5 5.2.3 Failure occurs during printing ... 5-6 5.2.4 Printer does not feed the paper correctly ... 5-7 5.2.5 Control panel operation is abnormal... 5-8 5.3 Unit Repair C206 PSB/PSE Board ...5-9 5.3.1 Unit Repair - C206 Main Board ... 5-11 5.4 Repair of the Printer Mechanism...5-13 EPSON Stylus Color 400 Service Manual 5.1 Troubleshooting The printer may exhibit different symptoms for the same problem, which makes troubleshooting more difficult. This section, however, provides simple and effective ways to facilitate troubleshooting. The following flowchart illustrates the main steps of the trouble shooting process. START Unit Level Troubleshooting Unit Repair (C206 PSB/PSE) Unit Repair (C206 Main) Unit Repair Printer Mechanism Disassemble and Adjustment END Figure 5-1. Troubleshooting Process Flowchart Table 5-1. Motor Resistance and Measurement Procedure Motor Name CR Motor PF(Pump) Motor Location CN6(C206 MAIN) CN7(C206 MAIN) Check Point 1-pin & 3-pin, 2-pin & 4-pin 1-pin & 3-pin, 2-pin & 4-pin Resistance 7.8 Ohms ±10% 7.8 Ohms·}10% Table 5-2. Sensor Check Sensor Name Paper end sensor Carriage home position sensor ASF phase Sensor Black cartridge sensor Color cartridge sensor Thermistor Check Point CN4 / 1-pin, 2-pin CN5 / 1-pin, 2-pin Signal Level Open: less than 0.7 V Close: more than 2.4 V Open: less than 0.7 V Close: more than 2.4V Open: less than 0.7 V Close: more than 2.4 V On: 0 V Off: more than 2.4 V On: 0 V Off: more than 2.4 V Analog data Sensor Status Paper exit No paper Home position Out of home position Home position Out of home position Black cartridge out Black cartridge exit Color cartridge out Color cartridge exit Change the VH voltage of charge pulse for common driver circuit CN11 / 1-pin, 2pin CN8 / 1-pin, 18pin CN8 / 2-pin, 18-pin CN8 / 3-pin, 18-pin Rev. A 5-1 Chapter 5 Troubleshooting Table 5-3. Printer Condition and Panel Status Indicators Error status Power Paper Out Paper jam condition No Ink cartridge or Ink en

File name 400ch6.pdf

Chapter 6 Maintenance 6.1 OVERVIEW ...6-1 6.1.1 Cleaning... 6-1 6.1.2 Service Maintenance ... 6-1 6.1.3 Lubrication ... 6-2 Chapter 6 Maintenance 6.1 OVERVIEW This section describes the points and the procedures for maintaining the printer in its optimum condition. 6.1.1 Cleaning This printer has no mechanical components requiring regular cleaning. Therefore, the points described below are suggested to be checked for any dirt and make an appropriate cleaning if necessary. CAUTION Never use the chemical solvents, such as thinner, to clean the printer. These chemicals can damage the components of the printer. Be careful not to damage the components when you attempt to clean the inside of the printer. Do not scratch surface of "ROLLER, ASSEMBLY, PF". (Use soft brush to wipe off any dusts, or use soft cloth moistened with alcohol) Use clean soft cloth moistened with water and wipe off any dirt. If the housing stained with an ink, use a cloth moistened with a neutral detergent to wipe it off. Inside the printer: Use a vacuum cleaner to remove any paper dust. Housing: 6.1.2 Service Maintenance If the print irregularity (missing dot, white line, etc.) has occur or the printer indicates "MAINTENANCE ERROR", perform the following operation to clear the error. Head Cleaning The printer has a built-in head cleaning function and is executable from the control panel. 1. Confirm that the printer is in stand-by state (the POWER indicator is not blinking), and hold down the cleaning button on the control panel for more than 3sec. 2. The printer perform the built-in cleaning sequence. (during cleaning operation, the POWER indicator is blinking) Maintenance Error Clear Since the printer consumes the ink, not only for printing but also for another operation like cleaning, certain amount of ink are wasted. Therefore, the printer counts the amount of waste ink and they are collected at the waste ink pad, and once the amount of waste ink reaches the predefined limit, the printer indicates "MAINTENANCE ERROR" and the waste ink pad should be replaced as follows: 1. Replace the waste ink pad to new one. 2. After re-assemble the printer, turn the printer on while hold down the following buttons on the control panel: "LOAD/EJECT" button "CLEANING" button 3. Press "LOAD/EJECT" button again while "PAPER END" indicator is blinking. This clears the maintenance error condition and the waste ink counter value stored in EEPROM of the main board. Rev. A 6-1 EPSON Stylus Color 400 Service Manual 6.1.3 Lub

File name 400cha.pdf

Appendix A.1 Connector Summary... A-1 A.2 Connector Summary... A-2 A.3 EEPROM Address Map ... A-4 A.4 Circuit Board Component Layouts ... A-8 A.5 Exploded Diagrams... A-12 EPSON Stylus Color400 Service Manual A.1 Connector Summary Stylus Color 400 has the following primary component units; Main Board(C206 Main) Power Supply Board (C206 PSB/PSE) Printer Mechanism Figure A-1 below illustrates how these component units are connected. AC CN1 C206PSB (Power Supply Board) CN2 CN10 CN3 Control Panel CN8 C206 MAIN (Main Board) Parallel I/F CN1 CN6 Serial I/F CN2 CN7 CN11 CN5 CN4 PF CR Motor Motor PE Sensor HP Sensor ASF Sensor Printer Mechanism Print Head Figure A-1. Cable Connection Rev.A A-1 Appendix A.2 Connector Summary Following tables show connector pin assignment of the C206 MAIN board. Table A-1. Connector summary of the C206 MAIN board Connector CN1 CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN10 CN11 Function Parallel I/F connector Serial I/F connector ·ЛControl panel ·ЛPE sensor ·ЛHP sensor ·ЛCR motor ·ЛPF motor ·ЛPrint head ·ЛPower supply board (C206 PSB) ·ЛASF sensor Table to refer Chapter1/Table 1-10 Chapter1 Table A-2 Table A-3 Table A-4 Table A-5 Table A-6 Table A-7 Table A-8 Table A-9 Table A-2. Connector CN3 Pin 1 2 3 4 5 6 7 8 9 10 11 12 Signal Name LED0 GND LED1 GND LED2 +5V +5V LED4 SW1 PSC SW0 SW2 I/O Out ---Out ---Out ------Out In In In In Function LED drive signal (0) Ground LED drive signal (1) Ground LED drive signal (2) Logic power supply Logic power supply LED drive signal (4) Panel switch input (1) Power on/off switch Panel switch on/off (0) Panel switch on/off (2) Table A-3. Connector CN4 Pin 1 2 3 Signal Name PE GND PEV I/O In ----Function Sensor detect signal Ground Sensor power supply(+5V) Table A-4. Connector CN5 Pin 1 2 3 Signal Name HP GND HPV I/O In ----Function Sensor detect signal Ground Sensor power supply(+5V) Table A-5. Connector CN6 Pin 1 2 3 4 Signal Name CRA CR-A CRB CR-B I/O Out Out Out Out Function Phase drive signal(A) Phase drive signal (-A) Phase drive signal (B) Phase drive signal(-B) A-2 Rev. A EPSON Stylus Color400 Service Manual Table A-6. Connector CN7 Pin 1 2 3 4 Signal Name PFA PF-A PFB PF-B I/O Out Out Out Out Function Phase drive signal (A) Phase drive signal (-A) Phase drive signal (B) Phase drive signal(-B) Table A-7. Connector CN8 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Signal Name BCO CCO THM GND LAT GND SI3 GND SI2 GND CLK GND CLK GND NCHG GND VDD GND2 GND2 GND2 COM COM COM VHV VHV I/O In In In --Out --Out --Out --Out --Out --Out -----------

File name stls400.pdf

EPSON COLOR INK-JET PRINTER EPSON Stylus Color 400 SERVICE MANUAL SEIKO EPSON CORPORATION 4007366 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 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 purposes only and may be trademarks or registered trademarks of their respective companies. Copyright © 1997 by SEIKO EPSON CORPORATION Nagano, Japan PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage to equipment. WARNING Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by WARNING Headings. CAUTION 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. WARNING 1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES. 2. NO WORK 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. CAUTION 1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY EPSON CERTIFIED REPAIR TECHNICIAN. 2. MAKE CERTAIN THAT THE SOURCE VOLTAGE 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 functions, theory of electrical and mechanical operations, maintenance, and repair of EP