Manuals / Epson / Computer Equipment / All in One Printer

Epson Scan 2500 service manual Circuit Diagrams

Models: Scan 2500

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EPSON Stylus Scan 2500

Revision A

7.6 Circuit Diagrams

This section contains the following circuit diagrams.

V

B101 MAIN Board (x3)

B101 PSB Board

B101 PSE Board

Appendix

Circuit Diagrams

172

Image 173

Epson Scan 2500 service manual Circuit Diagrams

Contents

Epson Stylus Scan Epson Stylus Scan Revision a Precautions Preface Revision Status Issued DateRevision DescriptionEpson Stylus Scan Revision a Contents Maintenance Product Description Mode Scan Output Print Micro Dot Size Head Media Local Copy SpecificationsMode Res Weave Local copyDocument Scan areaStarting scan Edge Position 1st bit Scanning Area DocumentPaper feed direction Printable Area Print areaPrint Area Printing Raster Graphics modeInput data buffer Control codesPrintable Area for Envelopes PaperEnvelope Margin Size Left Margin Right Margin Top Margin Bottom Margin MinColor Ink Cartridge 9 InkAAS ScannerCommon Safety, EMC Electrical specificationsEnvironmental conditions Humidity % Temperature CResistance to electric noise ReliabilityParallel InterfacesPrinter Interface USB Preventing Data Transfer TIME-OUT of Hosts USB ConfigurationInterface Selection Pin #2 Pin #1IEEE1284.4 Protocol Scanner interfacesElement Description Scanner Configuration for USBUSB 11. Special settings mode 10. Power-on functionsControl Panel Buttons12. Copy button functions Copy Button100% B&W Normal Quality Reduce Button Enlarge Number Color Warm upLCD 13. Settings Menu14. LCD display and LED indicators Indicators and LCD Display15. Initialization InitializationPrinter Initialization Scanner Initialization Settings Menu16. Settings Menu PRINTER-SPECIFIC Errors Stylus Scan Errors17. Printer-SPECIFIC errors MenusOptions SCANNER-SPECIFIC ErrorsScanning ADFWeight Physical CharacteristicsDimensions Page Operating Principles Printer Mechanism Operation GeneralMotor Types and Corresponding Functions Motor Type Function For detailsPF motor Printing MechanismPump unit CR guide shaft CR Motor PF roller PG leverSensor Nozzle selector BoardInk cartridge Piezo unit FilterNormal State Printing ProcessInk course Piezo unit Cavity Ejecting State NozzlesCR Motor Control for Each Mode Carriage Motor SpecificationsPhase drive Carriage Mechanism and MotorMotor Platen GAP LeverUnit Forward NormalPaper Feeding Mechanism Motor Control for Each Mode PF Motor SpecificationsPaper Feeding Mechanism Top View Multiple Paper Loading Prevention Mechanism right side view MULTI-FEED Prevention MechanismMethod Smaller TRAILING-EDGE MarginPower on sequence Power off sequenceCarriage Lock Mechanism Paper eject sequenceCombination 12.4,28 Eject roller transmission Gear Paper PICK-UP OperationCarriage lock Lever Cleaner blade Pump, Carriage Lock, Head Cleaner MechanismInk System Pump roller Cap unitGear B Compression Spring Gear C Pump drive Roller Pump Motor Rotation and FunctionPumping modes Pump Mode Revolutions AbsorptionCap Mechanism Carriage Unit Scanner Principles20. Carriage Movement Carriage OperationLocal copy process Local and PC Copy PrinciplesStylus Scan 2500 Local Copy Dpi Type RemovalMode Setting Scan Res. dpi Print Res. dpi Media PC Copy SettingsPC copy process Normal PC copyElectrical Circuit Operating Principles Voltage Application Printer Scanner 1 B102 PSB/PSE BoardApplication of DC Voltage ZD53 Switch Power signalD89 D51 C51,C52 Power drop Circuit Switch2 B102 Main Board Option 1284 I/FTransceiver UnitEpson Stylus Scan Revision a Troubleshooting Printer Condition and Panel Stat us Unit Level TroubleshootingFlowchart Printer/Scanner does not operate at power onSymptoms and Problem s EndEnd Error is detectedFailure occurs during printing Control panel operation is abnormal Printer does not feed paper correctlyPrinter-Specific errors Printer Related TroubleshootingRepair of the Printer Mechanis m Symptom Condition Cause Check Point SolutionRepair of the Printer Mechanism Epson Stylus Scan Revision a Epson Stylus Scan Revision a User-level Scanner-Specific errors Scanner TroubleshootingService Level Troubleshooting Starts Here Power problemsCarriage Unit does not operate Scanner does not initialize11. The lamp does not light up 10. Carriage unit crashes into frame14. Parallel Interface Error 13. Scsi Interface Error12. Poor image quality 15. Option unit malfunction16. Motor Resistance and Measurement Procedure Troubleshooting Motors and SensorsSensor Name Location Signal Level Sensor Status 17. Sensor CheckDisassembly & Assembly Overview Assembling or adjusting the printer When transporting the printer after installingMake the specified adjustments when you When assembling, if an ink cartridge is removedScrew Characteristics Specification for ScrewsTools Tool ListHead Top Side Body Washer Assembled Screw Types and AbbreviationsCategory Component Item to check Is Check Required? Service Checks After RepairInspection Checklist for the Stylus Scan Epson Stylus Scan Revision a Disassembly Procedures Removing the rear cover Removing the HousingRemove three CBS 3x6 screws Removing the control panel assemblyRemoving the top cover Removing the scanner support frame Removing the side coversRemoving the paper eject assembly Remove two screws On the left side Removing the power supply board upper frameCable protector Remove two Screws Removal of the B102 PSB/PSE BoardRemoving the printer mechanism Remove three screws Remove two screws Remove one screw Remove four screws Removal of the Circuit Board TrayRemoval of the Printer Consumables Spacer Waste ink tank Removing the waste ink padsRemoving the cleaning assembly Pump Cap Assembly, be careful that the parts do not pop out during When reassembling the cleaning assembly, refer toDisassembly and assembly When assembling the printer, be careful not to crush norRemoving the Cap and Pump Assemblies Removing the Printhead Unit Disassembling the Printer MechanismNozzle Selector has been enclosed into head Fastener HeadCompression Spring Removing the PF Motor AssemblyNo.1 Removing the CR Motor AssemblyRemoving the ASF Assembly Removing the ASF AssemblyDisassembling the ASF Roller Assembly Paper Feed Roller Assembly Hopper Assembly Brake Leveer Torsion SpringEpson standard color BlackWhen installing the LD roller assembly, make sure Removing the Right and Left LD Roller AssemblyAssembly That the hooks are hung on the paper feedRemoving the Carriage Assembly 12. Removing the Carriage Assembly Removing the PF Roller Assembly PF Roller Assembly Front Paper Guide B Eject Paper Roller Assembly16. Removing the PE Detector Assembly Removing the PE Paper Detector AssemblyHP Detector Disassembly of the Scanner MechanismRemoving the HP Detector Remove two screws Removing the scannerRemoving the lamp Remove spring here Remove the FFC Removing the scanner power supply boardRemoving the scanner assembly from the scanner guide shaft Frame as described in .7.1.3 above Removing the scanner motorAdjustment List of Service Procedures That Require Adjustment Required AdjustmentsList of Required Adjustments Content of Operation Adjustment ProcedureAdjustment Tools Required Printer AdjustmentPrinter hardware adjustments Parallelism AdjustmentChecking Parallelism Left Parallelism AdjustmentFixing Parallelism Adjustment Bushing Installing the program Using the Service-Adjustment ProgramService Menu Items Software-based Adjustment ProceduresOpenning the Start-up menu Head ID MenuAdjustment Using the Service-Adjustment Program 118 Adjustment Using the Service-Adjustment Program 119 Production Menu Adjustment Using the Service-Adjustment Program 121 Initial Ink Charge Operation Bi-D AdjustmentCL2 cleaning operation takes 60 seconds to complete Head Cleaning OperationFollowing patterns are printed Head Angular AdjustmentHead Voltage ID Input Printhead Securing screw Sample of Head Angular Adjustment PatternSpecial Menu Scanner AdjustmentInk draining Maintenance Lubrication CleaningPrinter lubrication points Scanner lubrication pointsStandard Remarks Pag Lubrication Point sMaintenance Overview 131 Maintenance Overview 132 GEAR,8 Gear 40.8 No.4Two Pieces Roller, ExitMaintenance Overview 135 Oil pad Lubricated side Faces out Carriage Assembly Bottom viewNever apply the oil exceeding 0.6cc GEAR,8 No.6 No.7 No.3 GearNo.9 No.10 No.8Scanner Mechanism Type Name Supply Specification QuantityAppendix Connector Board Connector Summary Connector Pin Assignment Connector Pin Assignment-CN9 Connector Pin Assignment-CN8Connector Pin Assignment-CN10 10. Connector Pin Assignment-CN1112. Connector Pin Assignment-CN13 11. Connector Pin Assignment-CN1213. Connector Pin Assignment-CN1 14. Connector Pin Assignment-CN15Settings Address Explanation SettingEeprom Address Map 15. Printer Unit Eeprom Address MapAppendix Eeprom Address Map 147 Appendix Eeprom Address Map 148 16. System Unit Eeprom Map Appendix Eeprom Address Map 150 Appendix Eeprom Address Map 151 Appendix Exploded Diagrams 152 Exploded DiagramsEpson Stylus Scan 2500 No.1 Epson Stylus Scan 2500 No.2 Epson Stylus Scan 2500 No.3 Epson Stylus Scan 2500 No.4 Epson Stylus Scan 2500 No.5 Epson Stylus Scan 2500 No.6 Rev.01 Epson Stylus Scan 2500 No.7 Epson Stylus Scan 2500 No.8 Packing Material for Epson Stylus Scan RefernceNumber Part Name Parts List17. Parts List Appendix Parts List 163 Appendix Parts List 164 Appendix Parts List 165 Appendix Parts List 166 Component Layouts Appendix Component Layouts 168 Appendix Component Layouts 169 Appendix Component Layouts 170 Appendix Component Layouts 171 Circuit Diagrams Page Page Page