Precautions, Tools | Epson Photo750 instruction

EPSON Stylus Photo 750

Revision A

4.1 Overview

This section describes procedures for disassembling the main components of EPSON Stylus Photo750. Unless otherwise specified, disassembly units or components can be reassembled by reversing the disassembly procedure. Precautions for any disassembly or assembly procedures are described under the heading “Caution”. Any adjustment required after disassembling the units are described under the heading “Required Adjustment”. Also, read precautions below before starting.

4.1.1 Precautions

A lithium battery is installed on the main board of this printer for backing up the system clock. Mishandling the battery may cause explosion or short. Read carefully the following precautions.

C A U Risque d’explosion si la pile est remplacée incorrectment. Ne remplacer que par une pile du même type ou d’un type équivalent recommandé par le fabricant. Eliminer les piles déchargées selon les lois et les règles de sécurité en vigueur.

C A U „ Since the fan inside of the printer interior does not have a cover, do not touch it when it is running.

„Handle with care for the electric parts inside of the printer, since electrostatic may damage the elements.

4.1.2Tools

WA R „

„

Disconnect the power cable before disassembling or assembling.

A lithium battery is installed on the main board of this printer. Be sure to observe the following instructions when servicing the battery:

Use only specified tools to avoid damaging the printer.

	Table 4-1.	Tools

Name	Supplier		Parts No.

Phillips Screw Driver

1.Do not get the battery shorted.

2.Do not install the battery in the wrong direction.

3.Do not heat the battery or put it near the fire.

CA U T DangerI O N of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacture. Dispose of used batteried according to government laws and regulations.

	(No.1)	EPSON	B743800200
	(No.1)

	Phillips Screw Driver	EPSON	B743800400
	(No.2)	EPSON	B743800400
	(No.2)

	Nipper	EPSON	B740500100

	Tweezers	EPSON	B741000100

	Thickness gage	EPSON	B776702201

Disassembly and Assembly

Overview

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Image 56

Epson Photo750 manual Precautions, Tools, Name Supplier Parts No Phillips Screw Driver

Contents

659,&#0$18$ General Notice Precautions About This Manual Revision Status Table of Contents Maintenance Product Description „ Holds 10 transparency films General CharacteristicsOverview Raster Graphics Mode General DescriptionPrinting 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 Adjust Lever Settings Setting Position of Adjust LeverPaper Lever position Adjustment Value Envelope Environmental Conditions Environmental Condition Color Ink Cartridge Ink CartridgeBlack Ink Cartridge Electric Specification Safety ApprovalsInput 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 Connector pin assignment and signals Parallel InterfaceParallel InterfaceForward channel 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 12. Connector pin assignment and signals Serial Interface11. 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 Bi-directional Command SwitchesFunction Control Code Special Setting Mode 18. Special setting modeLED Indications 17. Status printing Errors Indicators19. Printer Status displayed on the control panel Ink Out Paper Out Priority Black Color „ When you need to perform test print after the repair Initialization Initialization Setting Physical Specification Classification Name Consumables and options20. Consumables Operating Principles Printer Mechanism Printer Mechanism Epson Stylus Photo Revision a 1 C257 PSB Power Supply Circuit Operating Principles of Electric CircuitOutput Voltage Voltage Usage TRANST1 2 C259 Main Control Circuit Major ElementsMajor Elements Location Function Reset Circuit Reset Circuit Sensor Circuit Sensor Circuit Head Drive Circuit Timer CircuitEeprom Control 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 Check Point Signal Level Switch Mode Sensor Check PointMotor, 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 Symptom Condition Cause Check Point Solution Unit Repair Printer Mechanism10. Repair of the 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 Name Supplier Parts No Phillips Screw Driver PrecautionsTools Classifi Check Point Status Cation Work Completion CheckCheck List 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 „ Do not scratch special coated surface of the PF AdjustmentPaper Gap Adjustment Epson Stylus Photo Revision B Adjustment by Adjustment Program 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 Head Angular Adjustment Screw position for fixing the print head Magnetized condition when the printer has been left Adjustment, the following screen will be appearedU Preventing from the CR motor fall into the non Alone more then 5 minutes in the Head Anguler Bi-D Adjustment Bi-D Adjustment Pattern Sample 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 Lubrication „ Never use oil and the grease other than thoseLubrication 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 Connector Summary for C259MainConnector CN4 Major Component Unit Connector CN5 Connector CN6Connector CN7 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