Epson Photo750 manual Housing Removal

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EPSON Stylus Photo 750

Revision A

4.2.1 Housing Removal

Since this printer has no lower housing, the printer mechanism is exposed just by removing the upper housing.

1.Open the printer cover and set the PG adjust lever on the right-hand side to (+) position.

U p p e r H o u s i

2. Remove 4 screws and remove the upper housing.

CH E Pull the front edge of the upper housing while

P O I lifting up the upper housing to remove it.

CA U TBeIcarefulO N not to pinch the cable with the posts of the

upper housing when reinstalling it.

Figure 4-2. Housing Removal

Disassembly and Assembly

Disassembly

54

Image 59

Contents 659,&#0$18$ General Notice Precautions About This Manual Revision Status Table of Contents Maintenance Product Description „ Holds 10 transparency films General CharacteristicsOverview Printing Speed Raster Graphics ModeGeneral Description Printing„ No curled, wrinkled, scuffing or torn paper be used Paper SpecificationPaper Feeding Width Length Margin Typ Min Printable AreaPaper Left Right Top Bottom Envelope Adjust Lever SettingsSetting Position of Adjust Lever Paper Lever position Adjustment ValueEnvironmental Condition Environmental ConditionsColor Ink Cartridge Ink CartridgeBlack Ink Cartridge Reliability Electric SpecificationSafety Approvals Input Data Buffer14.1 ESC/P Control Codes CE MarkingPrinter Language and Emulation „ Dot size control ESC e „ Raster header ESC D „ Raster body Parallel I/F Connector pin assignment and signalsParallel Interface Parallel InterfaceForward channelParallel 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 tack13. X-ON/X-OFF, DTR protocol 12. Connector pin assignment and signalsSerial Interface 11. Serial interfaceUSBUniversal 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 Control Code Bi-directional CommandSwitches Function17. Status printing Special Setting Mode18. Special setting mode LED IndicationsInk Out Paper Out Priority Black Color ErrorsIndicators 19. Printer Status displayed on the control panelInitialization „ 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 Voltage Usage 1 C257 PSB Power Supply CircuitOperating Principles of Electric Circuit Output VoltageTRANST1 Location Function 2 C259 Main Control CircuitMajor Elements Major ElementsReset 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 Motor Location Check Point Resistance Check Point Signal Level Switch ModeSensor Check Point Motor, Coil 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 11. Repair of the Printer Mechanism Symptom Condition Cause Check Point SolutionUnit Repair Printer Mechanism 10. 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 „ You have to go through the menu to input Adjustment by Adjustment ProgramAdjustment Program How to use the Adjustment ProgramOptions in the Program and Keys to Use Setting Destination Information Head Voltage ID Adjustment Screw position for fixing the print head Head Angular AdjustmentAlone more then 5 minutes in the Head Anguler Magnetized condition when the printer has been leftAdjustment, the following screen will be appeared U Preventing from the CR motor fall into the nonBi-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 Type Name Epson Code Supplier Lubrication„ Never use oil and the grease other than those Lubrication PointASF A R , 2 3 V e r a p p l y t h e o i l Appendix Major Component Unit Connector SummaryConnector Summary for C259Main Connector CN4Connector CN8 Connector CN5Connector CN6 Connector CN710. 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