Epson Stylus Photo RX680/RX685/RX690 Color Inkjet Printer Service Repair Manual

Stylus Photo RX680/RX685/RX690 Color Inkjet Printer SEMF07008 SERVICE MANUAL

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. 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. 4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES. 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 NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY. 6. WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.

About This Manual This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. 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. Manual Configuration This manual consists of six chapters and Appendix. 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 Describes the step-by-step procedures for the troubleshooting. CHAPTER 4.DISASSEMBLY / ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product. CHAPTER 5.ADJUSTMENT 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. APPENDIX Provides the following additional information for reference: • Electrical circuit boards schematics Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages. Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality. Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment. May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action. Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life. Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected. ADJUSTMENT REQUIRED CAUTION CHECK POINT WARNING REASSEMBLY

Revision Status Revision Date of Issue Description A August 3, 2007 First Release

EPSON Stylus Photo RX680/RX685/RX690 Revision A 6 CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.1 Features............................................................................................................... 10 1.2 Printing Specifications........................................................................................ 11 1.2.1 Basic Specifications................................................................................. 11 1.2.2 Ink Cartridge ............................................................................................ 11 1.2.3 Print Mode ............................................................................................... 12 1.2.4 Supported Paper....................................................................................... 13 1.2.5 Printing Area ........................................................................................... 16 1.3 Scanner Specifications........................................................................................ 16 1.4 General Specifications ........................................................................................ 17 1.4.1 Electrical Specifications .......................................................................... 17 1.4.2 Safety Approvals (Safety standards/EMI) ............................................... 17 1.4.3 Acoustic Noise......................................................................................... 17 1.4.4 Durability ................................................................................................. 17 1.4.5 Environmental Conditions ....................................................................... 18 1.5 Interface .............................................................................................................. 18 1.5.1 USB Interfaces......................................................................................... 18 1.5.2 Memory Card Slots.................................................................................. 19 1.6 Control Panel ...................................................................................................... 20 1.6.1 Operation Buttons & LED ....................................................................... 20 1.7 Specifications of Each Function ......................................................................... 21 1.7.1 Stand-alone Copy Function ..................................................................... 21 1.7.2 Memory Card Direct Print Function........................................................ 21 1.7.3 Backup Function...................................................................................... 22 1.7.4 Camera Direct Print Function (USB Direct Print/PictBridge) ................ 23 1.7.5 Speciality Print Functions........................................................................ 23 1.7.6 Setup Mode .............................................................................................. 23 Chapter 2 OPERATING PRINCIPLES 2.1 Overview ............................................................................................................ 26 2.1.1 Printer Mechanism .................................................................................. 26 2.1.2 Motors and Sensors ................................................................................. 26 2.2 Printer Mechanism Operating Principles ........................................................... 28 2.2.1 Printhead .................................................................................................. 28 2.2.2 Carriage Mechanism................................................................................ 28 2.2.3 APG Mechanism ..................................................................................... 30 2.2.4 Paper Loading/Feeding Mechanism ........................................................ 33 2.2.5 CD-R Mechanism .................................................................................... 45 2.2.6 Ink System ............................................................................................... 49 2.2.7 Scanner Unit ............................................................................................ 50 2.3 Electrical Circuits Operating Principles ............................................................. 51 2.3.1 Features ................................................................................................... 51 2.3.2 Circuit Board Components ...................................................................... 52 2.3.3 Main Board Circuit Block Diagram ........................................................ 53 2.4 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP) . 54 Chapter 3 TROUBLESHOOTING 3.1 Overview ............................................................................................................ 56 3.1.1 Troubleshooting on Motors and Sensors ................................................. 56 3.2 Error/Warning Indications.................................................................................. 57 3.2.1 List of Error Indications .......................................................................... 57 3.3 Troubleshooting.................................................................................................. 59 3.3.1 Troubleshooting with Error Indications .................................................. 59 3.4 Troubleshooting by Symptom (no error indications) ......................................... 78 3.4.1 Troubleshooting Printer Mechanism Problems ....................................... 78 3.4.2 Troubleshooting Electrical Problems ...................................................... 81 3.4.3 Troubleshooting Ink Supply Problems .................................................... 81 3.4.4 Troubleshooting I/F-related Problems..................................................... 83 3.5 Troubleshooting for Scanner .............................................................................. 84 3.6 Troubleshooting Duplex Unit Problems............................................................. 86

EPSON Stylus Photo RX680/RX685/RX690 Revision A 7 Chapter 4 DISASSEMBLY AND ASSEMBLY 4.1 Overview ............................................................................................................ 88 4.1.1 Precautions .............................................................................................. 88 4.1.2 Tools ........................................................................................................ 89 4.1.3 Screws...................................................................................................... 89 4.1.4 Work Completion Checklist .................................................................... 90 4.1.5 Required Preparation before Disassembly .............................................. 91 4.1.6 Orientation Definition ............................................................................. 91 4.1.7 How to Unlock the Carriage .................................................................... 91 4.1.8 Disassembly Flowchart ........................................................................... 92 4.2 Removing Exterior Parts/Components ............................................................... 94 4.2.1 Paper Support Assy ................................................................................. 94 4.2.2 Rear Cover/Automatic Duplex Unit ........................................................ 94 4.2.3 Cassette Assy ........................................................................................... 95 4.2.4 Front ASF Cover Assy ............................................................................ 96 4.2.5 Panel Unit/Upper Housing ...................................................................... 96 4.2.6 Scanner Unit .......................................................................................... 100 4.2.7 Hinge Assy ............................................................................................ 102 4.3 Disassembling the Scanner Unit ....................................................................... 103 4.3.1 Document Cover/ASF Cover ................................................................ 103 4.3.2 Scanner Housing .................................................................................... 103 4.3.3 CIS Unit ................................................................................................. 104 4.3.4 CR Motor Unit ....................................................................................... 105 4.4 Removing Control Boards ................................................................................ 106 4.4.1 Main Board Assy ................................................................................... 106 4.4.2 Disassembling the Main Board Assy .................................................... 107 4.4.3 Disassembling the Panel Unit ................................................................ 108 4.5 Disassembling the Major Parts/Components.................................................... 110 4.5.1 Middle Housing ..................................................................................... 110 4.5.2 Power Supply Unit ................................................................................ 113 4.5.3 Stacker Assy .......................................................................................... 114 4.5.4 Printer Mechanism................................................................................. 114 4.5.5 CR Scale ................................................................................................ 117 4.5.6 Printhead ................................................................................................ 118 4.5.7 APG Assy/Sub Board/ASF Encoder/Retard ASF Assy ........................ 120 4.5.8 Waste Ink Pads/Foot .............................................................................. 123 4.5.9 EJ Frame Assy/CDR Guide Assy .......................................................... 124 4.5.10 PF Encoder .......................................................................................... 127 4.5.11 PF Motor .............................................................................................. 128 4.5.12 CR Motor ............................................................................................. 129 4.5.13 Carriage Assy ...................................................................................... 130 4.5.14 Paper Guide Upper L/R ....................................................................... 133 4.5.15 Paper Guide Rear/PE Sensor ............................................................... 134 4.5.16 Rear ASF Assy/Change Lever ............................................................ 135 4.5.17 ASF Sub Motor/RH Sensor/RP Sensor ............................................... 137 4.5.18 LD roller/Retard Roller ....................................................................... 139 4.5.19 Ink System ........................................................................................... 142 4.5.20 ASF Motor Assy.................................................................................. 143 4.5.21 Rear Frame Assy ................................................................................. 144 4.5.22 Paper Guide Front & EJ Roller Assy/PF Roller Assy ......................... 145 4.5.23 Paper Guide Bank Assy ....................................................................... 149 4.5.24 Paper Guide Lower Assy ..................................................................... 150 Chapter 5 ADJUSTMENT 5.1 Adjustment Items and Overview ...................................................................... 152 5.1.1 Servicing Adjustment Item List ............................................................ 152 5.1.2 Required Adjustments ........................................................................... 155 5.2 Adjustment by Using Adjustment Program ..................................................... 157 5.2.1 Top Margin Adjustment (Rear/Front) ................................................... 157 5.2.2 Head Angular Adjustment ..................................................................... 157 5.2.3 Bi-D Adjustment ................................................................................... 158 5.2.4 First Dot Position Adjustment (Front/Rear) .......................................... 159 5.2.5 PW Adjustment ..................................................................................... 159 5.2.6 PF Adjustment (Rear/Front) .................................................................. 160 5.3 Adjustment without Using Adjustment Program ............................................. 161 5.3.1 PG Adjustment ...................................................................................... 161 5.3.2 PF Belt Tension Adjustment ................................................................. 163 5.3.3 FD Belt Tension Adjustment ................................................................. 164 5.4 Scanner Original Adjustment ........................................................................... 165 5.5 Banding Reduction System (BRS) Adjustment / Paper Feed Amount Profile (PFP) Correction ......................................................................................................... 168 5.5.1 Overview ............................................................................................... 168 5.5.2 Adjustment Procedure ........................................................................... 170

EPSON Stylus Photo RX680/RX685/RX690 Revision A 8 Chapter 6 MAINTENANCE 6.1 Overview .......................................................................................................... 174 6.1.1 Cleaning ................................................................................................. 174 6.1.2 Service Maintenance ............................................................................. 174 6.1.3 Lubrication ............................................................................................ 175 Chapter 7 APPENDIX 7.1 Connectors ........................................................................................................ 184 7.2 Exploded Diagram / Parts List ......................................................................... 188 7.3 Electrical Circuits ............................................................................................. 188

CHAPTERA 1 PRODUCT DESCRIPTION

EPSON Stylus Photo RX680/RX685/RX690 Revision A PRODUCT DESCRIPTION Features 10 1.1 Features Stylus Photo RX680/RX685/RX690 are multi-featured color inkjet printers designed for semiprofessional and home use. The main features are;  Printing High speed and high quality on plain paper is achieved. Newly developed dye ink is employed, which offers excellent resistance to light, water, gas, and is less prone to smear. • In addition to print from a PC, offers direct print from a memory card. • Automatic duplex printing using the optional duplex unit (equipped as standard for EAI model) • Direct print on a CD/DVD • Equipped with two paper feeders; front cassette and rear ASF.  Scanning Employing CIS sensor offers faster scanning with no warm-up time and achieved compact body. • Scanning from a PC • Offers a function that directly stores a scan data to a memory card.  Stand-alone copy High quality copy using the printing and scanning functions. Offers eight or 11 (with the duplex unit) preset copy layouts.  Memory card slot Accessible from a PC as a USB memory card slot.  Color LCD 2.5-inch TFT color LCD for excellent ease of operation  USB interfaces • Enables to print images in an external storage device. • Backup copy of a memory card can be made on an external media • Offers camera direct print (PictBridge, USB Direct Print)  Wireless communication Mounting the optional Bluetooth unit offers wireless communication with an external device.  Dimensions  Dimensions:446 mm (W) x 432 mm (D) x 237 mm (H) (with the ASF and stacker closed. Excludes the duplex unit)  Weight: 12.0 kg (Excludes ink cartridges, CDR tray, duplex unit and power cable) Figure 1-1. External View

EPSON Stylus Photo RX680/RX685/RX690 Revision A PRODUCT DESCRIPTION Printing Specifications 11 1.2 Printing Specifications 1.2.1 Basic Specifications 1.2.2 Ink Cartridge The product numbers of the Epson ink cartridges for this printer are shown below.  Shelf life Two years from production date (if unopened), six months after opening package.  Storage Temperature  Dimension 12.7 mm (W) x 68 mm (D) x 47 mm (H) Table 1-1. Printer Specifications Item Specifications Print method On-demand ink jet Nozzle configuration Black: 90 nozzles x 1 Color: 90 nozzles x 5 (Cyan, Magenta, Yellow, Light Cyan, Light Magenta) Print direction Bi-directional minimum distance printing (logic seeking) Print resolution Horizontal x Vertical (dpi) • 360 x 180 • 360 x 360 • 720 x 360 • 720 x 540 • 720 x 720 • SMGA 5760 x 1440 (1440 x 1440) Control code • ESC/P Raster command • ESC/P-R (RGB) command • EPSON Remote command Internal font Character code: Alphanumeric with expanded graphics (PC437) ASCII, 20H to 7FH only Font: EPSON original font Alphanumeric font: Courier Input buffer size 64 Kbytes Paper feed method Friction feed Paper path • Top feed, front out (front paper cassette) • Front feed, front out (rear ASF) Paper feed rates T.B.D. mm/sec (at 25.4 mm feed) PF interval Programmable in 0.01764 mm (1/1440 inch) steps Table 1-2. Product No. of Ink Cartridges Color EAI Euro Asia, CISMEA Black T0771 (S) T0781 (SS) T0801 T0811 (S) T0821 (SS) Cyan T0772 (S) T0782 (SS) T0802 T0812 (S) T0822 (SS) Magenta T0773 (S) T0783 (SS) T0803 T0813 (S) T0823 (SS) Yellow T0774 (S) T0784 (SS) T0804 T0814 (S) T0824 (SS) Light Cyan T0775 (S) T0785 (SS) T0805 T0815 (S) T0825 (SS) Light Magenta T0776 (S) T0786 (SS) T0806 T0816 (S) T0826 (SS) Table 1-3. Storage Temperature Situation Storage Temperature Limit When stored in individual boxes -20 o C to 40 o C (-4 o F to 104 o F) 1 month max. at 40 o C (104 o F) When installed in main unit -20 o C to 40 o C (-4 o F to 104 o F) CAUTION  Do not use expired ink cartridges.  The ink in the ink cartridge freezes at -16 °C (3.2 o F). It takes about three hours under 25 °C (77 o F) until the ink thaws and becomes usable.

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Epson Stylus Photo RX680/RX685/RX690 Color Inkjet Printer Service Repair Manual

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