Circuit Diagrams | Epson Scan 2500 specs

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 Description Epson Stylus Scan Revision a Contents Maintenance Product Description Mode Scan Output Print Micro Dot Size Head Media Local Copy SpecificationsMode Res Weave Local copy Document Scan areaStarting scan Edge Position 1st bit Scanning Area Document Paper feed direction Printable Area Print areaPrint Area Printing Raster Graphics modeInput data buffer Control codes Printable Area for Envelopes PaperEnvelope Margin Size Left Margin Right Margin Top Margin Bottom Margin Min Color Ink Cartridge 9 Ink AAS Scanner Common Safety, EMC Electrical specifications Environmental conditions Humidity % Temperature CResistance to electric noise Reliability Parallel InterfacesPrinter Interface USB Preventing Data Transfer TIME-OUT of Hosts USB ConfigurationInterface Selection Pin #2 Pin #1 IEEE1284.4 Protocol Scanner interfaces Element Description Scanner Configuration for USBUSB 11. Special settings mode 10. Power-on functionsControl Panel Buttons 12. Copy button functions Copy Button100% B&W Normal Quality Reduce Button Enlarge Number Color Warm up LCD 13. Settings Menu 14. LCD display and LED indicators Indicators and LCD Display 15. Initialization InitializationPrinter Initialization Scanner Initialization Settings Menu16. Settings Menu PRINTER-SPECIFIC Errors Stylus Scan Errors17. Printer-SPECIFIC errors Menus Options SCANNER-SPECIFIC ErrorsScanning ADF Weight Physical CharacteristicsDimensions Page Operating Principles Printer Mechanism Operation GeneralMotor Types and Corresponding Functions Motor Type Function For details PF motor Printing MechanismPump unit CR guide shaft CR Motor PF roller PG lever Sensor Nozzle selector BoardInk cartridge Piezo unit Filter Normal State Printing ProcessInk course Piezo unit Cavity Ejecting State Nozzles CR Motor Control for Each Mode Carriage Motor SpecificationsPhase drive Carriage Mechanism and Motor Motor Platen GAP LeverUnit Forward Normal Paper Feeding Mechanism Motor Control for Each Mode PF Motor Specifications Paper Feeding Mechanism Top View Multiple Paper Loading Prevention Mechanism right side view MULTI-FEED Prevention Mechanism Method Smaller TRAILING-EDGE Margin Power on sequence Power off sequenceCarriage Lock Mechanism Paper eject sequence Combination 12.4,28 Eject roller transmission Gear Paper PICK-UP Operation Carriage lock Lever Cleaner blade Pump, Carriage Lock, Head Cleaner MechanismInk System Pump roller Cap unit Gear B Compression Spring Gear C Pump drive Roller Pump Motor Rotation and Function Pumping modes Pump Mode Revolutions Absorption Cap Mechanism Carriage Unit Scanner Principles 20. Carriage Movement Carriage Operation Local copy process Local and PC Copy PrinciplesStylus Scan 2500 Local Copy Dpi Type Removal Mode Setting Scan Res. dpi Print Res. dpi Media PC Copy SettingsPC copy process Normal PC copy Electrical 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 Switch 2 B102 Main Board Option 1284 I/FTransceiver Unit Epson Stylus Scan Revision a Troubleshooting Printer Condition and Panel Stat us Unit Level Troubleshooting Flowchart 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 correctly Printer-Specific errors Printer Related Troubleshooting Repair of the Printer Mechanis m Symptom Condition Cause Check Point Solution Repair 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 problems Carriage Unit does not operate Scanner does not initialize 11. The lamp does not light up 10. Carriage unit crashes into frame 14. Parallel Interface Error 13. Scsi Interface Error12. Poor image quality 15. Option unit malfunction 16. Motor Resistance and Measurement Procedure Troubleshooting Motors and SensorsSensor Name Location Signal Level Sensor Status 17. Sensor Check Disassembly & 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 removed Screw Characteristics Specification for ScrewsTools Tool List Head Top Side Body Washer Assembled Screw Types and Abbreviations Category 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 Housing Remove three CBS 3x6 screws Removing the control panel assemblyRemoving the top cover Removing the scanner support frame Removing the side covers Removing the paper eject assembly Remove two screws On the left side Removing the power supply board upper frame Cable protector Remove two Screws Removal of the B102 PSB/PSE Board Removing the printer mechanism Remove three screws Remove two screws Remove one screw Remove four screws Removal of the Circuit Board Tray Removal of the Printer Consumables Spacer Waste ink tank Removing the waste ink pads Removing 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 nor Removing the Cap and Pump Assemblies Removing the Printhead Unit Disassembling the Printer Mechanism Nozzle Selector has been enclosed into head Fastener Head Compression Spring Removing the PF Motor Assembly No.1 Removing the CR Motor Assembly Removing the ASF Assembly Removing the ASF Assembly Disassembling the ASF Roller Assembly Paper Feed Roller Assembly Hopper Assembly Brake Leveer Torsion SpringEpson standard color Black When installing the LD roller assembly, make sure Removing the Right and Left LD Roller AssemblyAssembly That the hooks are hung on the paper feed Removing the Carriage Assembly 12. Removing the Carriage Assembly Removing the PF Roller Assembly PF Roller Assembly Front Paper Guide B Eject Paper Roller Assembly 16. Removing the PE Detector Assembly Removing the PE Paper Detector Assembly HP 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 motor Adjustment List of Service Procedures That Require Adjustment Required AdjustmentsList of Required Adjustments Content of Operation Adjustment Procedure Adjustment Tools Required Printer AdjustmentPrinter hardware adjustments Parallelism Adjustment Checking Parallelism Left Parallelism AdjustmentFixing Parallelism Adjustment Bushing Installing the program Using the Service-Adjustment Program Service Menu Items Software-based Adjustment ProceduresOpenning the Start-up menu Head ID Menu Adjustment 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 Adjustment CL2 cleaning operation takes 60 seconds to complete Head Cleaning Operation Following patterns are printed Head Angular AdjustmentHead Voltage ID Input Printhead Securing screw Sample of Head Angular Adjustment Pattern Special Menu Scanner AdjustmentInk draining Maintenance Lubrication CleaningPrinter lubrication points Scanner lubrication points Standard Remarks Pag Lubrication Point s Maintenance Overview 131 Maintenance Overview 132 GEAR,8 Gear 40.8 No.4 Two Pieces Roller, Exit Maintenance 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 Gear No.9 No.10 No.8 Scanner Mechanism Type Name Supply Specification Quantity Appendix Connector Board Connector Summary Connector Pin Assignment Connector Pin Assignment-CN9 Connector Pin Assignment-CN8Connector Pin Assignment-CN10 10. Connector Pin Assignment-CN11 12. Connector Pin Assignment-CN13 11. Connector Pin Assignment-CN1213. Connector Pin Assignment-CN1 14. Connector Pin Assignment-CN15 Settings Address Explanation SettingEeprom Address Map 15. Printer Unit Eeprom Address Map Appendix 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 Diagrams Epson 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