Electrical Circuits | Epson C40UX manual

Stylus C40UX/C40SX/C20UX/C20SX

Revision A

7.6 Electrical Circuits

See the following pages for the electric circuit diagrams below:

C413MAIN control circuit board

C413MAIN-B control circuit board

C413MAIN-C control circuit board

C413MAIN-D control circuit board

C413PSB power supply circuit board

C413PSE power supply circuit board

Appendix

Electrical Circuits

115

Image 115

Epson C40UX service manual Electrical Circuits

Contents

Stylus C40UX/C40SX/C20UX/C20SX General Notice Precautions About This Manual Revision Status Contents Disassembly Adjustment Product Description Throughput Delay of oparationEeprom 29 H bit 0 value Model Delay time during printing Differences between the Stylus C20 and the Stylus C40 Printing Specification Physical SpecificationHorizontal Printable area Available dot CR Speed Feed condition Time Speed Electrical specificationPaper Feeding Input Data Buffer Acoustic Noise Safety ApprovalsEnvirormental Condition Reliability USB Interface Signal name In/Out Function descriptionParallel Interface Forward Channel Parameter Minimum Maximum Parallel I/F mode Typical time of tackParameter Parallel Interface Reverse Channel Pin No Signal Name ReturnG Functional description Prevention Hosts from Data Transfer Time-out IEEE1284.4 Protocol Printer Condition and Panel Status Operate SwitchControl Panel Panel Functions Printer Initialization Errors Paper Handling Paper Specification Printable Area for Cut Sheet Printing Area Margin Paper LMLeft RMRight TMTop Black BM Color BMSize Color Ink Cartridge Black Ink Cartridge Operating Principles Printer Mechanism Overview Printhead Sectional Drawing Printhead Ink Cavity Normal StateEjecting State Ink Path Detection position Carriage Motor SpecificationItems Specifications Carriage Mechanism I/C change position Paper Feeding Mechanism PF Motor Specifications† PF motor drive transmission path Paper Loading Mechanism ASF Unit † Switch the PF motor drive to ASF unit side † Transfer the PF motor drive to LD roller ASF unit function & PF Motor rotational direction† Clutch Mechanism † Paper Return Plate Pad holder 11. Disengage & Clutch mechanism 13. ASF Paper Loading Sequence PF motor rotational direction & Ink System Mechanism Ink System Mechanism Wiper with the cap unit 16. Cap Mechanism 18. non porous pad in cap Stylus C40/C20 Non porous pad in cap † Initial ink charge † Manual Cleaning† Timer Cleaning Ink Sequence † Flashing Printing mode for Color mode Printing modePrinting mode for Black mode 1 C417 PSB/PSE board Electrical Circuit Operating PrinciplesApplication of the DC Voltages TRANST1 Main Elements 2 C413 MAIN/B Board Troubleshooting Sensor Check Point Sensor Name Check Point Signal Level Switch ModeMotor Location Check Point Resistance Printer Status Indicators Priority Power Error Troubleshooting with LED Error IndicationsError Indicator of Operation Panel Error Condition and possible cause Step Detail phenomenon Check point Remedy Paper out error indication Spur gear 35.2 is Rotating If it is no problem, proceed Paper jam error indication Detail phenomenon Check point Remedy 10. Paper jam error indication11. Paper Jam Error indication 12. Ink Out error indication 13. Multiple papers are always loaded 15. Fatal Error indication14. Paper is always loaded without any print job 17. Dot missing occur and it is not recovered with CL 19. Dot missing occur and it is not recovered with CL 18. Dot missing occur and it is not recovered with CL 21. Print quality is not good 20. Print quality is not good 22. Print quality is not good Disassembly and Assembly Printer Precautions Et que le cordon d’alimentation soit debranche Name Supplier Parts No Name and Specification Outward FormTools Screws Classifi Check Point Status Work Completion CheckWork Completion Check Classifi Check Point Status Cation Disassembling Flowchart Disassembly Upper housing Upper housing removalEdge guide CBP 3⋅ CBS P2 3⋅ ASF unit removal Waste ink pad removal „ Waste ink counter reset operation. Refer to SectionTube stopper Waste ink pad CN2 PS unit S 3⋅ P 3⋅ PS unit removal„ Tightening Torque for screw +/-1 kgf.cm Front Frame Paper eject roller removalProtrusion CBS 3⋅ Gear Paper Eject roller Main board removal Switch cover HooksUSB Type CBS 3⋅ Parallel Type F.S-Tite 3⋅ 22. Removing the Main board 21. Disconnecting the connectors CR motor removal Printhead unit Printhead unit removalCarriage unit Carriage cover 30. Disconnecting the FFC LD unit Cables LD unit removal Printer mechanism removal Adjustment Required Adjustment Required AdjustmentPerformance Priority Adjustment Program Initial Setting menu Basic adjustment items Adjustment Program featureMain Menu Service Feed command until the paper is set in the ASF Bi-d adjustment even if the paper is out in the ASF. When Head ID Eeprom initial setting Read out the Head ID from the Eeprom Bi-D 10. Choose the Bi-d adjustment USB ID 13. Bi-d adjustment input menu 15. Choose the USB ID input menu 16. Choose the Top margin menu Top margin Initial ink charge Head cleaningFor the initial ink charge operation is so large 21. Choose the Refurbishment for DOA menu Refurbishment for DOA Check the present counter value Protection counter check Excepting ESP Clear the present counter value 26. Eeprom check function Eepron check Eeprom back up data 29. Eeprom backup data 31. A4 Check pattern 15 A4 pattern will print 32. A4 Check pattern Maintenance Cleaning Lubrication Service Maintenance† Head Cleaning † Maintenance Error Clear Main frame Right side view Lubrication Type/PointLubrication Type/Point Remarks 200mm Appendix Major Component Unit Connector Summary Pin CN9-Printhead Factory Address Explanation SettingEeprom Address Map Eeprom Address Map Appendix Eeprom Address Map 103 Appendix Eeprom Address Map 104 Bit1 Bit0 D4mode Bit7 Bit6 Name modeMarket Eeprom address Eeprom setting Bit3 Bit2 D4mode C413MAIN component layout Component Layout Appendix Component Layout 107 Parts list Parts ListRef No Description Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram Exploded Diagram Appendix Exploded Diagram 110 Appendix Exploded Diagram 111 Stylus C40UX/C40SX/C20UX/C20SXRevision a Appendix Exploded Diagram 113 Appendix Exploded Diagram 114 Electrical Circuits Page Page Page Page