Table of Contents | Epson Photo750 instruction

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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Epson Photo750 manual Table of Contents

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 Speed Paper 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 Envelope Environmental Conditions Environmental Condition Ink Cartridge Black Ink CartridgeColor Ink Cartridge Input Data Buffer Electric SpecificationSafety Approvals Reliability CE 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/F Pin Signal Return In/Out Function Description Name GND pin Parallel InterfaceReverse channel Connect pin assignment and signals Xflag Out Parallel I/F Mode Typical time of tack 10. Typical Time of Tack 11. Serial interface 12. Connector pin assignment and signalsSerial Interface 13. X-ON/X-OFF, DTR protocol 14. 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 Code LED Indications Special Setting Mode18. Special setting mode 17. Status printing 19. 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 Initialization Initialization Setting Physical Specification Consumables and options 20. ConsumablesClassification Name Operating Principles Printer Mechanism Printer Mechanism Epson Stylus Photo Revision a Output Voltage 1 C257 PSB Power Supply CircuitOperating Principles of Electric Circuit Voltage Usage TRANST1 Major Elements 2 C259 Main Control CircuitMajor Elements Location Function Reset Circuit Reset Circuit Sensor Circuit Sensor Circuit Timer Circuit Eeprom Control CircuitHead Drive Circuit Paper Feed Pump Motor PF/Pump Motor Drive Circuit Paper Feed Pump Motor Drive Circuit Carriage MotorCR Motor Drive Circuit 10. Carriage Motor Drive Circuit Troubleshooting Motor, Coil Resistance Check Point Signal Level Switch ModeSensor Check Point Motor Location Check Point Resistance Error 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 Board Epson Stylus Photo Revision a 10. Repair of the Printer Mechanism Symptom Condition Cause Check Point SolutionUnit Repair Printer Mechanism 11. Repair of the Printer Mechanism 12. Repair of the Printing Mechanism 13. Repair of the Printing Mechanism 14. Repair of the Printer Mechanism 15. Repair of the Printer Mechanism Disassembly 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 procedures Housing Removal Housing Removal Circuit Boards Removal Shield Plate, M/B Removal E P O Control Panel Removal Control Panel Removal Absorber Tray, AssemblyA Removal Absorber Tray, AssemblyA Removal Printer Mechanism Removal Print Head Removal E „ Be sure that the grounding plate is installed to Print Head Installation Pump, Assembly/Cap, Assembly Removal „ Be careful not to damage the rubber part of the cap 11. Ink Tube Motor, Assembly, CR Removal Bi-D adjustment. See Bi-D Adjustment on Motor Assembly PF Removal 15. Motor, Assembly, PF Installation 5.5 ASF, Assembly Removal Paper Feed Roller Assembly Removal E „ When removing or installing the Hopper Roller Assembly, LD Left/Right Removal 18. Roller Assembly, LD Removal Carriage Assembly Removal 19. Bush Parallel Adjust Removal 20. Carriage Assembly Removal PE Sensor Assembly Removal 21. PE Sensor Assembly Removal Roller, Assembly, PF Removal 23. Roller, Assembly, Paper Exit Removal 24. Roller, Assembly, PF Removal HP Sensor Removal 25. HP Sensor Removal Cartridge SensorSensor, I/C Removal 26. Bush Holder, Sensor, I/C Removal 29. Sensor, I/C Removal Adjustment Required Adjustment Required Adjustment Adjustment 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 input Options in the Program and Keys to Use Setting Destination Information Head Voltage ID Adjustment Head Angular Adjustment Screw position for fixing the print head U 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 Anguler Bi-D Adjustment Bi-D Adjustment Pattern Sample Head 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 Supplier ASF 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 Unit Connector CN7 Connector CN5Connector CN6 Connector CN8 Connector CN10 10. Connector CN11 Component Layout C259 Main Component Layout Appendix Component Layout 101 Exploded Diagram Exploded Diagram-1 Exploded Diagram for Epson Stylus Photo 750 2/3 Exploded Diagram for Epson Stylus Photo 750 3/3 Electric Circuit Page Page