ASF unit function & PF Motor rotational direction | Epson C40UX

Stylus C40UX/C40SX/C20UX/C20SX

Revision A

Transfer the PF motor drive to LD roller

PF Motor Pinion Gear (CW) → Spur Gear 60 (PF Roller) (CCW) → Spur Gear 10.8

(CCW) →	Combination Gear 18, 28 (CW) → Spur Gear 27.2 (CCW) → Spur Gear
25.6 (CW) →	Change Laver rotates (CW) → Combination Gear 16, 32 (CCW) →

Spur Gear 35.2 (CW) (include the clutch mechanism) → LD Roller (CW)

Following Figure 2-9 shows the PF motor drive transmission path to the LD roller unit built in the ASF unit. The LD roller is assembled on the same shaft that the Spur gear 35.2 is assembled.

Change Lever

Spur Gear 10, 8

Combination Gear 18, 28

Spur Gear 35. 2

Combination

Gear 35. 2

Spur Gear 25. 6

Spur Gear 27. 2

Figure 2-10. PF motor drive transmission path

When the PF motor torque is switched to the ASF unit side by the clutch mechanism, the function of the ASF mechanism varies depending on the rotational direction of the PF motor, as shown in the table below.

Table 2-3. ASF unit function & PF Motor rotational direction

Directions		Corresponding Functions
Directions		Corresponding Functions

Clockwise (*1)	•	Picks up and loads paper

Counterclockwise (*1)	•	Release the DE lever & Clutch mechanism

Clutch Mechanism

Unlike the previous products, this product dose not have a ASF HP sensor. Instead of the ASF HP sensor, Change lever and the Clutch mechanism are used to detect the ASF home position. Following figures describe the mechanism.

(*1): The PF Motor rotational direction = seen from the right side of the printer.

Operating Principles

Overview

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Image 32

Epson C40UX service manual ASF unit function & PF Motor rotational direction, † Transfer the PF motor drive to LD roller

Contents

Stylus C40UX/C40SX/C20UX/C20SX General Notice Precautions About This Manual Revision Status Contents Adjustment Disassembly Product Description Delay of oparation Eeprom 29 H bit 0 value Model Delay time during printingDifferences between the Stylus C20 and the Stylus C40 Throughput Horizontal Printable area Available dot CR Speed Physical SpecificationPrinting Specification Electrical specification Paper FeedingInput Data Buffer Feed condition Time Speed Safety Approvals Envirormental ConditionReliability Acoustic Noise Parallel Interface Forward Channel Signal name In/Out Function descriptionUSB Interface Parameter Parallel I/F mode Typical time of tackParameter Minimum Maximum Pin No Signal Name ReturnG Functional description Parallel Interface Reverse Channel Prevention Hosts from Data Transfer Time-out IEEE1284.4 Protocol Operate Switch Control PanelPanel Functions Printer Condition and Panel Status Errors Printer Initialization Paper Specification Paper Handling Printing Area Printable Area for Cut Sheet Size Paper LMLeft RMRight TMTop Black BM Color BMMargin Black Ink Cartridge Color Ink Cartridge Operating Principles Overview Printer Mechanism Printhead Printhead Sectional Drawing Normal State Ejecting StateInk Path Ink Cavity Carriage Motor Specification Items SpecificationsCarriage Mechanism Detection position I/C change position † PF motor drive transmission path PF Motor SpecificationsPaper Feeding Mechanism † Switch the PF motor drive to ASF unit side Paper Loading Mechanism ASF Unit † Clutch Mechanism ASF unit function & PF Motor rotational direction† Transfer the PF motor drive to LD roller 11. Disengage & Clutch mechanism † Paper Return Plate Pad holder 13. ASF Paper Loading Sequence Ink System Mechanism PF motor rotational direction & Ink System Mechanism 16. Cap Mechanism Wiper with the cap unit Non porous pad in cap 18. non porous pad in cap Stylus C40/C20 † Manual Cleaning † Timer CleaningInk Sequence † Initial ink charge † Flashing Printing mode for Black mode Printing modePrinting mode for Color mode Application of the DC Voltages Electrical Circuit Operating Principles1 C417 PSB/PSE board TRANST1 2 C413 MAIN/B Board Main Elements Troubleshooting Motor Location Check Point Resistance Sensor Name Check Point Signal Level Switch ModeSensor Check Point Troubleshooting with LED Error Indications Error Indicator of Operation PanelError Condition and possible cause Printer Status Indicators Priority Power Error Paper out error indication Step Detail phenomenon Check point Remedy Spur gear 35.2 is Rotating If it is no problem, proceed Paper jam error indication 10. Paper jam error indication 11. Paper Jam Error indication12. Ink Out error indication Detail phenomenon Check point Remedy 14. Paper is always loaded without any print job 15. Fatal Error indication13. Multiple papers are always loaded 17. Dot missing occur and it is not recovered with CL 18. Dot missing occur and it is not recovered with CL 19. Dot missing occur and it is not recovered with CL 20. Print quality is not good 21. Print quality is not good 22. Print quality is not good Disassembly and Assembly Precautions Printer Et que le cordon d’alimentation soit debranche Name and Specification Outward Form ToolsScrews Name Supplier Parts No Work Completion Check Work Completion CheckClassifi Check Point Status Cation Classifi Check Point Status Disassembly Disassembling Flowchart Edge guide Upper housing removalUpper housing ASF unit removal CBP 3⋅ CBS P2 3⋅ Tube stopper Waste ink pad „ Waste ink counter reset operation. Refer to SectionWaste ink pad removal „ Tightening Torque for screw +/-1 kgf.cm PS unit removalCN2 PS unit S 3⋅ P 3⋅ Paper eject roller removal ProtrusionCBS 3⋅ Front Frame Paper Eject roller Gear USB Type CBS 3⋅ Parallel Type F.S-Tite 3⋅ Switch cover HooksMain board removal 21. Disconnecting the connectors 22. Removing the Main board CR motor removal Printhead unit removal Carriage unitCarriage cover Printhead unit 30. Disconnecting the FFC LD unit removal LD unit Cables Printer mechanism removal Adjustment Performance Priority Required AdjustmentRequired Adjustment Adjustment Program Initial Setting menu Main Menu Service Adjustment Program featureBasic adjustment items Bi-d adjustment even if the paper is out in the ASF. When Feed command until the paper is set in the ASF Eeprom initial setting Head ID Read out the Head ID from the Eeprom 10. Choose the Bi-d adjustment Bi-D 13. Bi-d adjustment input menu USB ID 15. Choose the USB ID input menu Top margin 16. Choose the Top margin menu For the initial ink charge operation is so large Head cleaningInitial ink charge Refurbishment for DOA 21. Choose the Refurbishment for DOA menu Protection counter check Check the present counter value Clear the present counter value Excepting ESP Eepron check 26. Eeprom check function 29. Eeprom backup data Eeprom back up data 15 A4 pattern will print 31. A4 Check pattern 32. A4 Check pattern Maintenance Cleaning Service Maintenance † Head Cleaning† Maintenance Error Clear Lubrication Lubrication Type/Point Remarks Lubrication Type/PointMain frame Right side view 200mm Appendix Connector Summary Major Component Unit CN9-Printhead Pin Address Explanation Setting Eeprom Address MapEeprom Address Map Factory Appendix Eeprom Address Map 103 Appendix Eeprom Address Map 104 Bit7 Bit6 Name mode Market Eeprom address Eeprom settingBit3 Bit2 D4mode Bit1 Bit0 D4mode Component Layout C413MAIN component layout Appendix Component Layout 107 Ref No Description Parts ListParts list Exploded Diagram Stylus C40UX/C40SX/C20UX/C20SX 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