Paper Feed Pump Motor PF/Pump Motor Drive Circuit | Epson Photo750

EPSON Stylus Photo 750

Revision A

†Driver on the head

The driver on the head is Nozzle-selector drive circuit. Each drive waveform generated in the drive voltage wave form circuit is charged to the selected nozzle by this circuit with PZT elements, then, printing is performed.

2.2.2.7Paper Feed (Pump) Motor (PF/Pump Motor) Drive

Circuit

IC12 and IC13 on the control circuit board drive PF/PUMP motor. This motor uses 4-phase 200-pole Hybrid type stepping motor and drives constant current bi-pola.

	PFIA0	8
	PFIA0
	PFIA1	9				A3956(IC12)
	PFIA1							10
	PFIA2	10			14	D0	OUTA	10
	PFIA2				9
		11			9	D1	OUTB	15
		11				D1	OUTB
	PFPHAA				8
		4			8	D2	VBB
	PFIB0	4				D2	VBB
	PFIB0				7
		5			7	PHASE	VCC
	PFIB1	5				PHASE	VCC
	PFIB1				2 REF
	PFIB2	6		+5	2 REF
	PFIB2				1 PFD
		7
		7
	PFPHAB
E05B58**(IC2)
						A3956(IC13)
					14	D0	OUTA	10
					9	D1	OUTB	15
								15
C90A05
C90A05					8	D2	VBB
(IC1)						D2	VBB
(IC1)					7
					7	PHASE	VCC
	6 -		7			PHASE	VCC
	6 -		7		2	REF
DA1 112	5 +					REF
DA1 112	5 +				1	PFD
						PFD
		Current
		Detection
	M6252(IC16)				CN8
					1
					A
					3
					/A
					Rotor
					2
					B
					4
					/B

Figure 2-9. Paper Feed (Pump) Motor Drive Circuit

Operating Principles

Operating Principles of Electric Circuit

36

Image 41

Epson Photo750 manual Paper Feed Pump Motor PF/Pump Motor Drive Circuit, Paper Feed Pump Motor Drive Circuit

Contents

659,&#0$18$ General Notice Precautions About This Manual Revision Status Table of Contents Maintenance Product Description „ Holds 10 transparency films General CharacteristicsOverview General Description Raster Graphics ModePrinting Printing Speed „ No curled, wrinkled, scuffing or torn paper be used Paper SpecificationPaper Feeding Width Length Margin Typ Min Printable AreaPaper Left Right Top Bottom Setting Position of Adjust Lever Adjust Lever SettingsPaper Lever position Adjustment Value Envelope Environmental Condition Environmental Conditions Color Ink Cartridge Ink CartridgeBlack Ink Cartridge Safety Approvals Electric SpecificationInput Data Buffer Reliability 14.1 ESC/P Control Codes CE MarkingPrinter Language and Emulation „ Dot size control ESC e „ Raster header ESC D „ Raster body Parallel Interface Connector pin assignment and signalsParallel InterfaceForward channel Parallel I/F Parallel InterfaceReverse channel Pin Signal Return In/Out Function Description Name GND pin Xflag Out Connect pin assignment and signals 10. Typical Time of Tack Parallel I/F Mode Typical time of tack Serial Interface 12. Connector pin assignment and signals11. Serial interface 13. X-ON/X-OFF, DTR protocol USBUniversal Serial Bus Interface 14. Connector pin assignment and signalsPin Signal Name Out Function Description Ieee 1284.4 protocol Prevention of data transfer time-out on HostInterface selection Switches Bi-directional CommandFunction Control Code 18. Special setting mode Special Setting ModeLED Indications 17. Status printing Indicators Errors19. Printer Status displayed on the control panel Ink Out Paper Out Priority Black Color Initialization „ When you need to perform test print after the repair Physical Specification Initialization Setting Classification Name Consumables and options20. Consumables Operating Principles Printer Mechanism Printer Mechanism Epson Stylus Photo Revision a Operating Principles of Electric Circuit 1 C257 PSB Power Supply CircuitOutput Voltage Voltage Usage TRANST1 Major Elements 2 C259 Main Control CircuitMajor Elements Location Function Reset Circuit Reset Circuit Sensor Circuit Sensor Circuit Head Drive Circuit Timer CircuitEeprom Control Circuit Paper Feed Pump Motor Drive Circuit Paper Feed Pump Motor PF/Pump Motor Drive Circuit 10. Carriage Motor Drive Circuit Carriage MotorCR Motor Drive Circuit Troubleshooting Sensor Check Point Check Point Signal Level Switch ModeMotor, Coil Resistance Motor Location Check Point Resistance Paper Ink End Check Black Color Error IndicationLED Indication Condition Remedy Symptom Cause Flow Chart Unit Level TroubleshootingSymptoms and Corresponding Flow Chart E c k t h e Error S s a g e . R e f e r t o T a b le 3 A R T Sympto Condition Cause Check point Solution Unit Repair Power Supply BoardRepair of the Power Supply Board Repair of the Control Board Repair of the Control Board Epson Stylus Photo Revision a Unit Repair Printer Mechanism Symptom Condition Cause Check Point Solution10. Repair of the Printer Mechanism 11. Repair of the Printer Mechanism 13. Repair of the Printing Mechanism 12. Repair of the Printing Mechanism 15. Repair of the Printer Mechanism 14. Repair of the Printer Mechanism Disassembly and Assembly Name Supplier Parts No Phillips Screw Driver PrecautionsTools Classifi Check Point Status Cation Work Completion CheckCheck List Flowchart below shows step-by step disassembly procedures Disassembly Housing Removal Housing Removal Shield Plate, M/B Removal Circuit Boards Removal E P O Control Panel Removal Control Panel Removal Absorber Tray, AssemblyA Removal Absorber Tray, AssemblyA Removal Print Head Removal Printer Mechanism Removal Print Head Installation E „ Be sure that the grounding plate is installed to „ Be careful not to damage the rubber part of the cap Pump, Assembly/Cap, Assembly Removal 11. Ink Tube Bi-D adjustment. See Bi-D Adjustment on Motor, Assembly, CR Removal 15. Motor, Assembly, PF Installation Motor Assembly PF Removal 5.5 ASF, Assembly Removal E „ When removing or installing the Hopper Paper Feed Roller Assembly Removal 18. Roller Assembly, LD Removal Roller Assembly, LD Left/Right Removal 19. Bush Parallel Adjust Removal Carriage Assembly Removal 20. Carriage Assembly Removal 21. PE Sensor Assembly Removal PE Sensor Assembly Removal 23. Roller, Assembly, Paper Exit Removal Roller, Assembly, PF Removal 24. Roller, Assembly, PF Removal 25. HP Sensor Removal HP Sensor Removal 26. Bush Holder, Sensor, I/C Removal Cartridge SensorSensor, I/C Removal 29. Sensor, I/C Removal Adjustment Required Adjustment Required Adjustment „ Do not scratch special coated surface of the PF AdjustmentPaper Gap Adjustment Epson Stylus Photo Revision B Adjustment Program Adjustment by Adjustment ProgramHow to use the Adjustment Program „ You have to go through the menu to input Options in the Program and Keys to Use Setting Destination Information Head Voltage ID Adjustment Screw position for fixing the print head Head Angular Adjustment Adjustment, the following screen will be appeared Magnetized condition when the printer has been leftU Preventing from the CR motor fall into the non Alone more then 5 minutes in the Head Anguler Bi-D Adjustment Pattern Sample Bi-D Adjustment Head Cleaning Initial Ink Charge Protect Counter Value Protect Counter ResetCounter Value for Ink Absorber Maintenance „ Never use chemical solvents, such as thinner, to CleaningService Maintenance „ Never use oil and the grease other than those LubricationLubrication Point Type Name Epson Code Supplier ASF A R , 2 3 V e r a p p l y t h e o i l Appendix Connector Summary for C259Main Connector SummaryConnector CN4 Major Component Unit Connector CN6 Connector CN5Connector CN7 Connector CN8 10. Connector CN11 Connector CN10 C259 Main Component Layout Component Layout Appendix Component Layout 101 Exploded Diagram-1 Exploded Diagram Exploded Diagram for Epson Stylus Photo 750 2/3 Exploded Diagram for Epson Stylus Photo 750 3/3 Electric Circuit Page Page