Removing the Housing, Removing the rear cover | Epson Scan 2500

EPSON Stylus Scan 2500

Revision A

4.3 Removing the Housing

4.3.1 Removing the rear cover

1.Remove the paper stacker.

2.Remove four (CBS 3x6) screws.

3.Pull out the rear cover from the bottom.

Disassembly & Assembly

Removing the Housing

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Epson Scan 2500 service manual Removing the Housing, Removing the rear cover

Contents

Epson Stylus Scan Epson Stylus Scan Revision a Precautions Preface Description Issued DateRevision Status Revision Epson Stylus Scan Revision a Contents Maintenance Product Description Local copy Local Copy SpecificationsMode Scan Output Print Micro Dot Size Head Media Mode Res Weave Document Scan areaDocument Starting scan Edge Position 1st bit Scanning Area Paper feed direction Printable Area Print areaPrint Area Control codes Raster Graphics modePrinting Input data buffer Size Left Margin Right Margin Top Margin Bottom Margin Min PaperPrintable Area for Envelopes Envelope Margin Color Ink Cartridge 9 Ink AAS Scanner Common Safety, EMC Electrical specifications Reliability Humidity % Temperature CEnvironmental conditions Resistance to electric noise Parallel InterfacesPrinter Interface Pin #2 Pin #1 USB ConfigurationUSB Preventing Data Transfer TIME-OUT of Hosts Interface Selection IEEE1284.4 Protocol Scanner interfaces Element Description Scanner Configuration for USBUSB Buttons 10. Power-on functions11. Special settings mode Control Panel Warm up Copy Button12. Copy button functions 100% B&W Normal Quality Reduce Button Enlarge Number Color LCD 13. Settings Menu 14. LCD display and LED indicators Indicators and LCD Display 15. Initialization InitializationPrinter Initialization Scanner Initialization Settings Menu16. Settings Menu Menus Stylus Scan ErrorsPRINTER-SPECIFIC Errors 17. Printer-SPECIFIC errors ADF SCANNER-SPECIFIC ErrorsOptions Scanning Weight Physical CharacteristicsDimensions Page Operating Principles Motor Type Function For details GeneralPrinter Mechanism Operation Motor Types and Corresponding Functions CR guide shaft CR Motor PF roller PG lever Printing MechanismPF motor Pump unit Piezo unit Filter Nozzle selector BoardSensor Ink cartridge Nozzles Printing ProcessNormal State Ink course Piezo unit Cavity Ejecting State Carriage Mechanism and Motor Carriage Motor SpecificationsCR Motor Control for Each Mode Phase drive Normal Platen GAP LeverMotor Unit Forward 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 Paper eject sequence Power off sequencePower on sequence Carriage Lock Mechanism Combination 12.4,28 Eject roller transmission Gear Paper PICK-UP Operation Pump roller Cap unit Pump, Carriage Lock, Head Cleaner MechanismCarriage lock Lever Cleaner blade Ink System 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 Dpi Type Removal Local and PC Copy PrinciplesLocal copy process Stylus Scan 2500 Local Copy Normal PC copy PC Copy SettingsMode Setting Scan Res. dpi Print Res. dpi Media PC copy process Electrical Circuit Operating Principles Voltage Application Printer Scanner 1 B102 PSB/PSE BoardApplication of DC Voltage Circuit Switch Power signalZD53 Switch D89 D51 C51,C52 Power drop 2 B102 Main Board Unit 1284 I/FOption Transceiver 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 Power problems Scanner TroubleshootingUser-level Scanner-Specific errors Service Level Troubleshooting Starts Here Carriage Unit does not operate Scanner does not initialize 11. The lamp does not light up 10. Carriage unit crashes into frame 15. Option unit malfunction 13. Scsi Interface Error14. Parallel Interface Error 12. Poor image quality 17. Sensor Check Troubleshooting Motors and Sensors16. Motor Resistance and Measurement Procedure Sensor Name Location Signal Level Sensor Status Disassembly & Assembly Overview When assembling, if an ink cartridge is removed When transporting the printer after installingAssembling or adjusting the printer Make the specified adjustments when you Tool List Specification for ScrewsScrew Characteristics Tools 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 When assembling the printer, be careful not to crush nor When reassembling the cleaning assembly, refer toAssembly, be careful that the parts do not pop out during Disassembly and assembly 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 Black Hopper Assembly Brake Leveer Torsion SpringPaper Feed Roller Assembly Epson standard color That the hooks are hung on the paper feed Removing the Right and Left LD Roller AssemblyWhen installing the LD roller assembly, make sure Assembly 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 Content of Operation Adjustment Procedure Required AdjustmentsList of Service Procedures That Require Adjustment List of Required Adjustments Parallelism Adjustment Printer AdjustmentAdjustment Tools Required Printer hardware adjustments Checking Parallelism Left Parallelism AdjustmentFixing Parallelism Adjustment Bushing Installing the program Using the Service-Adjustment Program Head ID Menu Software-based Adjustment ProceduresService Menu Items Openning the Start-up 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 Scanner lubrication points CleaningLubrication Printer 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 10. Connector Pin Assignment-CN11 Connector Pin Assignment-CN8Connector Pin Assignment-CN9 Connector Pin Assignment-CN10 14. Connector Pin Assignment-CN15 11. Connector Pin Assignment-CN1212. Connector Pin Assignment-CN13 13. Connector Pin Assignment-CN1 15. Printer Unit Eeprom Address Map Address Explanation SettingSettings 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