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

Page 41

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PFIA1

9

 

 

 

A3956(IC12)

 

 

 

 

 

 

 

 

10

 

PFIA2

10

 

 

14

D0

OUTA

 

 

 

 

9

 

 

 

 

 

11

 

 

D1

OUTB

15

 

 

 

 

 

 

 

PFPHAA

 

 

8

 

 

 

 

 

4

 

 

D2

VBB

 

 

PFIB0

 

 

 

 

 

 

 

 

7

 

 

 

 

 

5

 

 

PHASE

VCC

 

 

PFIB1

 

 

 

 

 

 

 

 

2 REF

 

 

 

PFIB2

6

 

+5

 

 

 

 

 

1 PFD

 

 

 

 

7

 

 

 

 

 

 

 

 

 

 

PFPHAB

 

 

 

 

 

 

E05B58**(IC2)

 

 

 

 

 

 

 

 

 

 

 

 

A3956(IC13)

 

 

 

 

 

 

14

D0

OUTA

10

 

 

 

 

 

9

D1

OUTB

15

 

 

 

 

 

 

C90A05

 

 

 

 

 

 

 

 

 

 

8

D2

VBB

 

(IC1)

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

PHASE

VCC

 

 

6 -

 

7

 

 

 

 

 

 

2

REF

 

 

DA1 112

5 +

 

 

 

 

 

 

 

 

 

1

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

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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 EnvelopeEnvironmental Condition Environmental ConditionsColor Ink Cartridge Ink CartridgeBlack Ink Cartridge Safety Approvals Electric SpecificationInput Data Buffer Reliability14.1 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/FParallel InterfaceReverse channel Pin Signal Return In/Out Function Description Name GND pinXflag Out Connect pin assignment and signals10. Typical Time of Tack Parallel I/F Mode Typical time of tackSerial Interface 12. Connector pin assignment and signals11. Serial interface 13. X-ON/X-OFF, DTR protocolUSBUniversal 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 Code18. Special setting mode Special Setting ModeLED Indications 17. Status printingIndicators Errors19. Printer Status displayed on the control panel Ink Out Paper Out Priority Black ColorInitialization „ When you need to perform test print after the repairPhysical Specification Initialization SettingClassification Name Consumables and options20. Consumables Operating Principles Printer Mechanism Printer MechanismEpson Stylus Photo Revision a Operating Principles of Electric Circuit 1 C257 PSB Power Supply CircuitOutput Voltage Voltage UsageTRANST1 Major Elements 2 C259 Main Control CircuitMajor Elements Location FunctionReset Circuit Reset CircuitSensor Circuit Sensor CircuitHead Drive Circuit Timer CircuitEeprom Control Circuit Paper Feed Pump Motor Drive Circuit Paper Feed Pump Motor PF/Pump Motor Drive Circuit10. Carriage Motor Drive Circuit Carriage MotorCR Motor Drive CircuitTroubleshooting Sensor Check Point Check Point Signal Level Switch ModeMotor, Coil Resistance Motor Location Check Point ResistancePaper 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 BoardEpson Stylus Photo Revision a Unit Repair Printer Mechanism Symptom Condition Cause Check Point Solution10. Repair of the Printer Mechanism 11. Repair of the Printer Mechanism13. Repair of the Printing Mechanism 12. Repair of the Printing Mechanism15. Repair of the Printer Mechanism 14. Repair of the Printer MechanismDisassembly 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 DisassemblyHousing Removal Housing RemovalShield Plate, M/B Removal Circuit Boards RemovalE P O Control Panel Removal Control Panel RemovalAbsorber Tray, AssemblyA Removal Absorber Tray, AssemblyA RemovalPrint Head Removal Printer Mechanism RemovalPrint 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 Removal11. Ink Tube Bi-D adjustment. See Bi-D Adjustment on Motor, Assembly, CR Removal15. Motor, Assembly, PF Installation Motor Assembly PF Removal5.5 ASF, Assembly Removal E „ When removing or installing the Hopper Paper Feed Roller Assembly Removal18. Roller Assembly, LD Removal Roller Assembly, LD Left/Right Removal19. Bush Parallel Adjust Removal Carriage Assembly Removal20. Carriage Assembly Removal 21. PE Sensor Assembly Removal PE Sensor Assembly Removal23. Roller, Assembly, Paper Exit Removal Roller, Assembly, PF Removal24. Roller, Assembly, PF Removal 25. HP Sensor Removal HP Sensor Removal26. Bush Holder, Sensor, I/C Removal Cartridge SensorSensor, I/C Removal29. 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 inputOptions in the Program and Keys to Use Setting Destination Information Head Voltage ID Adjustment Screw position for fixing the print head Head Angular AdjustmentAdjustment, 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 AngulerBi-D Adjustment Pattern Sample Bi-D AdjustmentHead 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 SupplierASF 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 UnitConnector CN6 Connector CN5Connector CN7 Connector CN810. Connector CN11 Connector CN10C259 Main Component Layout Component LayoutAppendix Component Layout 101 Exploded Diagram-1 Exploded DiagramExploded Diagram for Epson Stylus Photo 750 2/3 Exploded Diagram for Epson Stylus Photo 750 3/3 Electric Circuit Page Page
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