Epson Photo750 manual Table of Contents

Page 6

Stylus Photo 750

Revision A

Table of Contents

Product Description
Overview	4
General Characteristics	4
General Description	5
Printing	5
Paper Feeding	6
Paper Specification	6
Printable Area	7
Adjust Lever Settings	8
Environmental Conditions	9
Ink Cartridge	10
Input Data Buffer	11
Electric Specification	11
Reliability	11
Safety Approvals	11
Acoustic noise	11
CE Marking	12
Printer Language and Emulation	12
Parallel Interface	14
Parallel Interface(Forward channel)	14
Parallel Interface(Reverse channel)	15
Serial Interface	18
USB(Universal Serial Bus) Interface	19
Prevention of data transfer time-out on the host	20
Interface selection	20
IEEE 1284.4 protocol	20
Function	21
Control Code	21
Bi-directional Command	21
Control Panel	21
Special Setting Mode	22
LED Indications	22
Errors	23
Initialization	24
Initialization Setting	25
Physical Specification	25

Consumables and options	26
Operating Principles
Overview	28
Printer Mechanism	28
Operating Principles of Electric Circuit	30
C257 PSB Power Supply Circuit	30
C259 Main Control Circuit	32
Troubleshooting
Overview	39
Unit Level Troubleshooting	41
Unit Repair (Power Supply Board)	44
Repair of the Control Board	45
Unit Repair (Printer Mechanism)	47
Disassembly and Assembly
Overview	51
Precautions	51
Tools	51
Work Completion Check	52
Disassembly	53
Housing Removal	54
Circuit Boards Removal	55
Control Panel Removal	57
Absorber Tray, Assembly;A Removal	58
Printer Mechanism Removal	59
Adjustment
Overview	77
Required Adjustment	77
Adjustment	78

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Contents 659,&#0$18$ General Notice Precautions About This Manual Revision Status Table of Contents Maintenance Product Description General Characteristics Overview„ Holds 10 transparency films Printing Raster Graphics ModeGeneral Description Printing SpeedPaper Specification Paper Feeding„ No curled, wrinkled, scuffing or torn paper be used Printable Area Paper Left Right Top BottomWidth Length Margin Typ Min Paper Lever position Adjustment Value Adjust Lever SettingsSetting Position of Adjust Lever EnvelopeEnvironmental Conditions Environmental ConditionInk Cartridge Black Ink CartridgeColor Ink Cartridge Input Data Buffer Electric SpecificationSafety Approvals ReliabilityCE Marking Printer Language and Emulation14.1 ESC/P Control Codes „ Dot size control ESC e „ Raster header ESC D „ Raster body Parallel InterfaceForward channel Connector pin assignment and signalsParallel Interface Parallel I/FPin Signal Return In/Out Function Description Name GND pin Parallel InterfaceReverse channelConnect pin assignment and signals Xflag OutParallel I/F Mode Typical time of tack 10. Typical Time of Tack11. Serial interface 12. Connector pin assignment and signalsSerial Interface 13. X-ON/X-OFF, DTR protocol14. Connector pin assignment and signals Pin Signal Name Out Function DescriptionUSBUniversal Serial Bus Interface Prevention of data transfer time-out on Host Interface selectionIeee 1284.4 protocol Function Bi-directional CommandSwitches Control CodeLED Indications Special Setting Mode18. Special setting mode 17. Status printing19. Printer Status displayed on the control panel ErrorsIndicators Ink Out Paper Out Priority Black Color„ When you need to perform test print after the repair InitializationInitialization Setting Physical SpecificationConsumables and options 20. ConsumablesClassification Name Operating Principles Printer Mechanism Printer MechanismEpson Stylus Photo Revision a Output Voltage 1 C257 PSB Power Supply CircuitOperating Principles of Electric Circuit Voltage UsageTRANST1 Major Elements 2 C259 Main Control CircuitMajor Elements Location FunctionReset Circuit Reset CircuitSensor Circuit Sensor CircuitTimer Circuit Eeprom Control CircuitHead Drive Circuit Paper Feed Pump Motor PF/Pump Motor Drive Circuit Paper Feed Pump Motor Drive CircuitCarriage MotorCR Motor Drive Circuit 10. Carriage Motor Drive CircuitTroubleshooting Motor, Coil Resistance Check Point Signal Level Switch ModeSensor Check Point Motor Location Check Point ResistanceError Indication LED Indication Condition RemedyPaper Ink End Check Black Color Unit Level Troubleshooting Symptoms and Corresponding Flow ChartSymptom Cause 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 Unit Repair Power Supply Board Repair of the Power Supply BoardSympto Condition Cause Check point Solution Repair of the Control Board Repair of the Control BoardEpson Stylus Photo Revision a 10. Repair of the Printer Mechanism Symptom Condition Cause Check Point SolutionUnit Repair Printer Mechanism 11. Repair of the Printer Mechanism12. Repair of the Printing Mechanism 13. Repair of the Printing Mechanism14. Repair of the Printer Mechanism 15. Repair of the Printer MechanismDisassembly and Assembly Precautions ToolsName Supplier Parts No Phillips Screw Driver Work Completion Check Check ListClassifi Check Point Status Cation Disassembly Flowchart below shows step-by step disassembly proceduresHousing Removal Housing RemovalCircuit Boards Removal Shield Plate, M/B RemovalE P O Control Panel Removal Control Panel RemovalAbsorber Tray, AssemblyA Removal Absorber Tray, AssemblyA RemovalPrinter Mechanism Removal Print Head RemovalE „ Be sure that the grounding plate is installed to Print Head InstallationPump, Assembly/Cap, Assembly Removal „ Be careful not to damage the rubber part of the cap11. Ink Tube Motor, Assembly, CR Removal Bi-D adjustment. See Bi-D Adjustment onMotor Assembly PF Removal 15. Motor, Assembly, PF Installation5.5 ASF, Assembly Removal Paper Feed Roller Assembly Removal E „ When removing or installing the HopperRoller Assembly, LD Left/Right Removal 18. Roller Assembly, LD RemovalCarriage Assembly Removal 19. Bush Parallel Adjust Removal20. Carriage Assembly Removal PE Sensor Assembly Removal 21. PE Sensor Assembly RemovalRoller, Assembly, PF Removal 23. Roller, Assembly, Paper Exit Removal24. Roller, Assembly, PF Removal HP Sensor Removal 25. HP Sensor RemovalCartridge SensorSensor, I/C Removal 26. Bush Holder, Sensor, I/C Removal29. Sensor, I/C Removal Adjustment Required Adjustment Required AdjustmentAdjustment Paper Gap Adjustment„ Do not scratch special coated surface of the PF Epson Stylus Photo Revision B How to use the Adjustment Program Adjustment by Adjustment ProgramAdjustment Program „ You have to go through the menu to inputOptions in the Program and Keys to Use Setting Destination Information Head Voltage ID Adjustment Head Angular Adjustment Screw position for fixing the print headU Preventing from the CR motor fall into the non Magnetized condition when the printer has been leftAdjustment, the following screen will be appeared Alone more then 5 minutes in the Head AngulerBi-D Adjustment Bi-D Adjustment Pattern SampleHead Cleaning Initial Ink Charge Protect Counter Reset Counter Value for Ink AbsorberProtect Counter Value Maintenance Cleaning Service Maintenance„ Never use chemical solvents, such as thinner, to Lubrication Point Lubrication„ Never use oil and the grease other than those 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 CN4 Connector SummaryConnector Summary for C259Main Major Component UnitConnector CN7 Connector CN5Connector CN6 Connector CN8Connector CN10 10. Connector CN11Component Layout C259 Main Component LayoutAppendix Component Layout 101 Exploded Diagram Exploded Diagram-1Exploded Diagram for Epson Stylus Photo 750 2/3 Exploded Diagram for Epson Stylus Photo 750 3/3 Electric Circuit Page Page