Sensor Check Point | Epson C40UX manual

Stylus C40UX/C40SX/C20UX/C20SX

Revision A

3.1 Overview

This chapter describes how to identify troubles in two levels: unit level repair and component level repair. Refer to the flowchart in this chapter to identify the defective unit and perform component level repair if necessary. This chapter also explains motor coil resistance, sensor specification and error indication.

START

Unit level Troubleshooting

Unit repair

Assemble & Adjustment

END

Figure 3-1. Troubleshooting Flowchart

Table 3-1. Motor, Coil Resistance

	Motor	Location	Check Point	Resistance
	Motor	Location	Check Point	Resistance

	CR Motor	CN12	Pin 1 and 3	9.6 Ohms ± 10%
	CR Motor	CN12	Pin 2 and 4	(at 25 ° C/ phase)
			Pin 2 and 4	(at 25 ° C/ phase)

	PF Motor	CN7	Pin 1 and 3	7.35 Ohms ± 10%
	PF Motor	CN7	Pin 2 and 4	(at 25 ° C/ phase)
			Pin 2 and 4	(at 25 ° C/ phase)

Table 3-2. Sensor Check Point

	Sensor Name	Check Point	Signal Level		Switch Mode

				Off
			Less than 0.7V	• Out of HP range
			Less than 0.7V	•	No paper
				•	No paper
	HP/PE Sensor	CN4/Pin 1 and 2		•	Detect the I/C

				On
				On
			More than 2.4V	•	Within HP range
			More than 2.4V	•	Detect the paper
				•	Detect the paper
				• Not detects the I/C

	Thermistor	TH1 (on the Head	Analog signal	10 K (at 24 ° C)
	(THM)	driver board)	Analog signal	10 K (at 24 ° C)
	(THM)	driver board)

Troubleshooting

Overview

45

Image 45

Epson C40UX Sensor Check Point, Motor Location Check Point Resistance, Sensor Name Check Point Signal Level Switch Mode

Contents

Stylus C40UX/C40SX/C20UX/C20SX General Notice Precautions About This Manual Revision Status Contents Disassembly Adjustment Product Description Eeprom 29 H bit 0 value Model Delay time during printing Delay of oparationDifferences between the Stylus C20 and the Stylus C40 Throughput Physical Specification Printing SpecificationHorizontal Printable area Available dot CR Speed Paper Feeding Electrical specificationInput Data Buffer Feed condition Time Speed Envirormental Condition Safety ApprovalsReliability Acoustic Noise Signal name In/Out Function description USB InterfaceParallel Interface Forward Channel Parallel I/F mode Typical time of tack Parameter Minimum MaximumParameter Parallel Interface Reverse Channel Pin No Signal Name ReturnG Functional description Prevention Hosts from Data Transfer Time-out IEEE1284.4 Protocol Control Panel Operate SwitchPanel Functions Printer Condition and Panel Status Printer Initialization Errors Paper Handling Paper Specification Printable Area for Cut Sheet Printing Area Paper LMLeft RMRight TMTop Black BM Color BM MarginSize Color Ink Cartridge Black Ink Cartridge Operating Principles Printer Mechanism Overview Printhead Sectional Drawing Printhead Ejecting State Normal StateInk Path Ink Cavity Items Specifications Carriage Motor SpecificationCarriage Mechanism Detection position I/C change position PF Motor Specifications Paper Feeding Mechanism† PF motor drive transmission path Paper Loading Mechanism ASF Unit † Switch the PF motor drive to ASF unit side ASF unit function & PF Motor rotational direction † Transfer the PF motor drive to LD roller† 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 † Timer Cleaning † Manual CleaningInk Sequence † Initial ink charge † Flashing Printing mode Printing mode for Color modePrinting mode for Black mode Electrical Circuit Operating Principles 1 C417 PSB/PSE boardApplication of the DC Voltages TRANST1 Main Elements 2 C413 MAIN/B Board Troubleshooting Sensor Name Check Point Signal Level Switch Mode Sensor Check PointMotor Location Check Point Resistance Error Indicator of Operation Panel Troubleshooting with LED Error IndicationsError Condition and possible cause Printer Status Indicators Priority Power Error 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 11. Paper Jam Error indication 10. Paper jam error indication12. Ink Out error indication Detail phenomenon Check point Remedy 15. Fatal Error indication 13. Multiple papers are always loaded14. 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 Tools Name and Specification Outward FormScrews Name Supplier Parts No Work Completion Check Work Completion CheckClassifi Check Point Status Cation Classifi Check Point Status Disassembling Flowchart Disassembly Upper housing removal Upper housingEdge guide CBP 3⋅ CBS P2 3⋅ ASF unit removal „ Waste ink counter reset operation. Refer to Section Waste ink pad removalTube stopper Waste ink pad PS unit removal CN2 PS unit S 3⋅ P 3⋅„ Tightening Torque for screw +/-1 kgf.cm Protrusion Paper eject roller removalCBS 3⋅ Front Frame Gear Paper Eject roller Switch cover Hooks Main board removalUSB Type CBS 3⋅ Parallel Type F.S-Tite 3⋅ 22. Removing the Main board 21. Disconnecting the connectors CR motor removal Carriage unit Printhead unit removalCarriage cover Printhead unit 30. Disconnecting the FFC LD unit Cables LD unit removal Printer mechanism removal Adjustment Required Adjustment Required AdjustmentPerformance Priority Adjustment Program Initial Setting menu Adjustment Program feature Basic adjustment itemsMain 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 Head cleaning Initial ink chargeFor 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 † Head Cleaning Service Maintenance† Maintenance Error Clear Lubrication Lubrication Type/Point Main frame Right side viewLubrication Type/Point Remarks 200mm Appendix Major Component Unit Connector Summary Pin CN9-Printhead Eeprom Address Map Address Explanation SettingEeprom Address Map Factory Appendix Eeprom Address Map 103 Appendix Eeprom Address Map 104 Market Eeprom address Eeprom setting Bit7 Bit6 Name modeBit3 Bit2 D4mode Bit1 Bit0 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