Optoma EP750 Service Manual
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EP750/755
Preface
This manual is prepared for the maintenance service for EP750/755
Micro-portable SVGA/XGA DLP Projector. Maintenance procedures
described in this manual are intended to isolate faulty parts and replace
them in the field. It also aims to serve as a guide in procuring
replacement parts for this product.
This manual is copyrighted and all rights are reserved. This product
may not, in whole or in part, be copied, photocopied, translated or
reduced to any electronic or machine readable form without prior
written consent except for copies retained by the purchaser for backup
purpose.
This manual includes system overview, major system assembly,
components’ description, and the “Troubleshooting” making
explanations on how to detect errors. It also includes a flow chart for
checking or correcting faults.
No warranty or representation, either expressed or implied, is made
with respect to this documentation, its quality, performance,
merchantability or fitness for particular purpose.
No event that the vendor will be liable for direct, indirect, special,
incidental or consequential damages arising out of the user or inability
to use this product or documentation.
NOTICE :
The information found in this manual is subject to change
without prior notice. Any subsequent changes made to the
data herein will be incorporated in further edition.
Copyright 2001, December
All Rights Reserved
Manual Version 1.0
Document # 836-G04-01A
P/ N : 36. 83603. 001
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Summary of Contents for Optoma EP750

  • Page 1 EP750/755 Preface This manual is prepared for the maintenance service for EP750/755 Micro-portable SVGA/XGA DLP Projector. Maintenance procedures described in this manual are intended to isolate faulty parts and replace them in the field. It also aims to serve as a guide in procuring replacement parts for this product.
  • Page 2: Table Of Contents

    EP750/755 Table of Contents ..................Introduction ..............1-1 Product Highlights ............. 1-2 Technical Specifications ..............Fundamental Principle ............ 2-1 Whole System Block Diagram ..................2-2 Optics .............. III. Mechanical Construction ..............3-1 Package Overview ..............3-2 Exploded Overview ..........3-3 Recommendation Spare Parts List 3-20 ............
  • Page 3 EP750/755 ................... VI. Specifications ..............6-1 DMD Specifications ..............6-2 Screen Defect Limits ............6-3 Power Supply Specifications ..............6-4 Lamp Specifications ............6-5 Lamp Driver Specifications ................VII. Troubleshooting ..............7-1 Equipment Needed ................7-2 Main Procedure ........VIII. Function Test & Alignment Procedure ..................
  • Page 4: Introduction

    EP750/755 CHAPTER INTRODUCTION | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 5: Product Highlights

    EP750/755 1-1 Product Highlights q One panel 0.7” DMD projection system with 1350 ANSI lumens (Typical)-For EP750 1440 ANSI lumens (Typical)-For EP755 q 270-Watt Compact SHP-DC Lamp (User Replaceable) q High efficiency cooling system with system acoustic noise level 36dBA (Average) q Light weight less then 6.8 lbs...
  • Page 6: Technical Specifications

    EP750/755 1-2 Technical Specification 1-2.1 Mechanical Specifications | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 7 EP750/755 Throw Ratio : 2.0~2.5 (Projection Distance / Image Width) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 8: Fundamental Principle

    EP750/755 CHAPTER FUNDAMENTAL PRINCIPLE | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 9: Whole System Block Diagram

    EP750/755 2-1 Whole System Block Diagram | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 10 EP750/755 2-1.1 Front End Board Block Diagram | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 12 EP750/755 2-1.1 Formatter Board Block Diagram | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 13: Optics

    EP750/755 2-2 Optics 2-2.1 Conceptual Drawing Lamp Module Relay Lens 2 Lamp Cover Glass Condenser Color Wheel Hollow Rod Mirror Relay Lens 4 Projection Lens Relay Lens 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 14 EP750/755 2-2.2 Basic Functions Lamp Module The light source. Lamp Cover Glass Protecting system components if the lamp explodes Color Wheel Separating the light beam into and produce R.G.B colors. Hollow Rod Making the light beam uniform. Relay Lens Relay the object Condenser Condensing the light beam.
  • Page 15: Mechanical Construction

    EP750/755 CHAPTER MECHANICAL CONSTRUCTION This section provides the package and exploded overview, replaceable parts list and recommendatiom parts list for the portable projector. You can place an order for correct parts in the recommendation parts list. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 16: Package Overview

    EP750/755 3-1 Package Overview | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 17 EP750/755 Note : Mark “---” and in “red” color mean the added or updated item, and item in “blue” color is deleted. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 18: Exploded Overview

    EP750/755 3-2 Exploded Overview | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 19 EP750/755 Note : Mark “---” and in “red” color mean the added or updated item, and item in “blue” color is deleted. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 20 EP750/755 Ã ÄÃ ÅÃÃ Ã Ã ÅÃÃ ÃÄÃ ÃÃ Ã ÇÃ Ã Ã Ã ÄÃ ÂÃÃ Ã Ã ÃÅÃ Ã Ã ÅÃÃ ÃÆÃ ÃÂÃ ÃÇÃ Ã ÄÃ ÅÃÃ ÃÃ ÂÃ ÃÈÃ Ã Ã Ã ÉÃ Ã ÈÃ Ã Ã Ã ÅÃ...
  • Page 21 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 22 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 23 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 24 EP750/755 3-10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 25 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 26 EP750/755 ÂÈÂ ÂÃÂ Ç ÂÂ ÈÉ ÂÂ Ä Æ Å 3-12 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 27 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 28 EP750/755 3-14 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 29 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 30 EP750/755 3-16 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 31 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 32 EP750/755 3-18 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 33 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 34: Recommendation Spare Parts List

    EP750/755 3-3 Recommendation Spare Parts List 3-20 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 35 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 36 EP750/755 Note : SW = Swap Spare Parts, CM = Consume Spare Parts. You can place an order for swap or consume spare parts to do replacement. Or just return swap spare parts back for repair, but consume spare parts is not acceptable for repair or return.
  • Page 37: Procedure Of Disassembly

    EP750/755 CHAPTER PROCEDURE OF DISASSEMBLY This section provides disassembly procedures for EP750/755 Micro Portable SVGA/XGA DLP Projector. Before you begin any of these procedures, be sure to turn off the power, computer system, and other attached devices; then disconnect the power cable from the electronically outlet. Moreover, when you disassemble the projector, be sure to put the screws in a safe place and separate them according to grouping.
  • Page 38: Tools Needed

    EP750/755 Tools Needed : Hex Sleeves 5mm (Top) Screw Bit (+) : 102 Screw Bit (+) : 107 Angle Cutting Nipper (Left) Long Nose Nipper (Right) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 39: Disassemble Top Cover Module, Keypad Board And Speaker

    EP750/755 4-1 Disassemble Top Cover Module, Keypad Board and Speaker Remove three screws and one long screw from Bottom (85.0A323.050) (85.1A323.300) Housing. Remove four screws beside Top Housing. (85.0A323.050) Lift up Top Housing and unplug three wires to Thermal Board, IR Cover Module and Speaker Board.
  • Page 40 EP750/755 Unscrew one screw to remove Speaker Board (85.1A123.040) Unscrew four screws to remove IR Cover Module, Vent. (85.0A323.050) IR Cover Module 85.0A323.050 Vent 85.0A323.050 85.1A123.040 Speaker Board | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 41 EP750/755 Tear off Keypad Light Insulator , then remove four screws (51.83639.001) (85.0A323.050) of Keypad Board and tear off 3M Tape then unscrew two screws (51.81540.001) (85. of Speaker Holders to remove speaker. 1A123.040) (61.81104.001) 52.83606.001 Speaker Rubber Left 85.1A123.040...
  • Page 42: Disassemble Av Module And Connector Board

    EP750/755 4-2 Disassemble AV Module and Connector Board Turn over Bottom Housing and remove four screws from Bottom (85.0A323.050) Housing. Unscrew two screws of Label Connector Module to remove Label (85.4A326.060) Connector Module and remove two screws from Connector Cover (85.0A323.050)
  • Page 43 EP750/755 Remove two screws and four long screws from Label (85.005AG.040) (61.00002.001) Connector Module. Unscrew four screws of Connector Board to remove it. (85.WA126.050) Connector Board Connector Board Label Connector Module 61.00002.001 85.WA126.050 85.005AG.040 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 44: Disassemble Lamp Ballast And Power Supply

    EP750/755 4-3 Disassemble Lamp Ballast and Power Supply Remove two screws from Lamp Housing. Unplug one wire to Lamp. (61.00029.001) Tear of 3M Tape , unplug three wires and unscrew four screws (51.81540.001) (85.0A323. of Ballast Bracket to remove Ballast Module.
  • Page 45 EP750/755 Remove two screws from Power Socket Bracket and take off it. (85.0A323.050) Loosen one screw of Power supply from grounding. (85.1C224.050) Unscrew four hex screws of Power Supply to remove it. (61.83615.001) Power Socket Bracket 85.0A323.050 85.1C224.050 Power Supply Insulator 61.83615.001...
  • Page 46: Disassemble Lamp Module And Thermal Board

    EP750/755 4-4 Disassemble Lamp Module and Thermal Board Turn over Bottom Housing and loosen two screws of Lamp Cover from (61.80511.001) Bottom Housing and take off Lamp Cover. Loosen three screws of Lamp to remove Lamp. Lamp Bottom Housing 61.80511.001...
  • Page 47 EP750/755 Unplug seven cables from Thermal Board. Remove one screw from Thermal Sensor Board. Unscrew one screw (85.0A323.050) and one hex screw to remove Thermal Board. (85.0A323.050) (85.00123.050) (The one hex screw is under one screw of Thermal Sensor Board) Unscrew three screws of Fan to remove Fan.
  • Page 48: Disassemble Fan Module And Front End Board

    EP750/755 4-5 Disassemble Fan Module and Front End Board Remove two screws from Fan Module and take off it. (61.00029.001) Unscrew four screws and one long screw of Engine (85.0A323.050) (85.1A323.080) Module. Unscrew two screws to remove Fan Module. 85.1A323.080 85.0A323.050...
  • Page 49 EP750/755 Unscrew two screws to remove Front End Board from Engine. (85.0A323.050) Front End Board 85.0A323.050 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 50: Disassemble Formatter Board

    EP750/755 4-6 Disassemble Formatter Board Unscrew one hex screw from Engine Module. Unscrew two screws to remove Safe Switch from Front End Board. Unplug Color Wheel Cable. Unscrew two screws from Formatter Board Unscrew four screws from Formatter Board to remove DMD Module.
  • Page 51: Function Of Boards

    EP750/755 CHAPTER FUNCTION OF BOARDS This section provides each connector location on boards, signal and func- tion of each board. They will be useful for your detecting the defective boards. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 52: Front End Board

    EP750/755 5-1 Front End Board (Main Board) JP2 JP1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 53 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 54 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 55 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 56 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 57 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 58 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 59 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 60: Formatter Board (Side A)

    EP750/755 5-2 Formatter Board (Side A) J503 J502 5-10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 61: Formatter Board (Side B)

    EP750/755 5-3 Formatter Board (Side B) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 62 EP750/755 5-12 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 63 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 64 EP750/755 i t c 5-14 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 65: Thermal Board

    EP750/755 5-4 Thermal Board 5-4.1 The Location of Connector J1 J2 J3 J10 J4 J5 5-4.2 J1 5-4.3 J2 i t c 5-4.4 J3 i t c | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 66 EP750/755 5-16 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 67 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 68: Data Connector Board

    EP750/755 5-5 Data Connector Board 5-18 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 69 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 70 EP750/755 5-20 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 71: Specifications

    EP750/755 CHAPTER SPECIFICATIONS This chapter provides DMD, Screen Defect limit, Power Supply Lamp, Lamp and Lamp Driver specifications. All specifications are for your reference. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 72: Dmd Specifications

    EP750/755 6-1 DMD Specifications | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 73: Screen Defect Limits

    EP750/755 6-2 Screen Defect Limits Unstable Pixels Dark Pixels Bright Pixels Optical Blemishes Minor Blemishes Major Blemishes | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 74: Power Supply Specifications

    EP750/755 6-3 Power Supply Specifications General Specifications : ¢ ¢ ¢ ¢ AC Input Requirement : ¢ ¢ ¢ ¢ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 75 EP750/755 DC Output Requirement : ¢ - - - - - - - - - - - - - - - - - - - - - - - - - - - ¢ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 76 EP750/755 Environmental Requirement : ¢ ¢ ¢ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 77: Lamp Specifications

    EP750/755 6-4 Lamp Specifications Test and Operational Conditions : General Initial : | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 78 EP750/755 Average Lamp Life and Lumen Maintenance : Rise Time : Hot Restrike : Instruction for use | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 79: Lamp Driver Specifications

    EP750/755 6-5 Lamp Driver Specifications Lamp Driver Data : Mechanical and Environmental Reliability Tests : ¢ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 80 EP750/755 ¢ 6-10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 81 EP750/755 Instruction for use Safety distances : Conditions for use : | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 82 EP750/755 Warnings : 6-12 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 83: Troubleshooting

    EP750/755 CHAPTER TROUBLESHOOTING This chapter provides technicians and people who have an electronic background a primary description about maintaining the product. Moreover, you can get the appropriate operation to solve some complicated problems of component repair- ing and professional problems.
  • Page 84: Equipment Needed

    EP750/755 7-1 Equipment Needed • EP750/755 Projector • DVI to VGA Cable, Power Cord • PC (Personal Computer) • Audio Input, Video Input • Screw Drivers 7-2 Main Procedure Start Connect Power cord, analog or digital signal and audio signal, then turn power on Is Lamp light on ? A.
  • Page 85 EP750/755 Continue D. Audio Is Audio OK? Troubleshooting Is Remote E. Remote Control Control OK? Troubleshooting No Fault Found | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 86 EP750/755 7-2.1 A. Power Troubleshooting Start Check power Is LED Reassembly Lamp Housing cord & lamp indicator assembly OK? input power Housing voltage Change Supply Power Supply AC power Module Change Change Fan Is Fan working? Thermal Change Module Front-End...
  • Page 87 EP750/755 7-2.2 B. Performance Troubleshooting Start Change Change Have image? Front-End DMD Module Board Change Change Have garbage Front-End DMD Module pattern? Board Change Uniformity OK? Engine Module Change Color Adjust Change Optical Is color OK? Front-End Procedure Engine Module...
  • Page 88 EP750/755 Color Adjust Procedure : * Notice : PC shall run R.G.B. gray scale pattern. 1. Power on. Press “Up”, “Up”, “Left” button when the “No Signal” show on the screen. 2. Choose Color Wheel Index. 3. Press “Left” or “Right” button to adjust.
  • Page 89 EP750/755 7-2.4 D. Audio Troubleshooting Start Change Change Change Can hear Data CNNT Front-End Spearker sound? Board Board Change Sound is clear Speaker without noise? No Fault Found 7-2.5 E. Remote Control Troubleshooting Start Does the Remote Function work? Replace the battery...
  • Page 90: Function Test & Alignment Procedure

    EP750/755 CHAPTER FUNCTION TEST AND ALIGNMENT PROCEDURE This chapter provides equipment, conditions, patterns, and procedure needed for Function Test and Alignment. It also includes compatible modes. All information is for your reference. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 91: Product

    EP750/755 8-1 Product 8-2 Test Equipment 8-3 Test Condition | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 92: Test Display Modes And Patterns

    EP750/755 8-4 Test Display Modes and Patterns i l i | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 93 EP750/755 i l i | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 94 EP750/755 i l i | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 95 EP750/755 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 96 EP750/755 B. Color Pattern (Figure 5) Full White Pattern (Figure 6) Dark Pattern (Figure 7) Gary 30 Pattern (Figure 8) Blue 180 Pattern (Figure 9) Boundary Frame (Figure 10) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 97: Inspection Procedure

    EP750/755 8-5 Inspection Procedure RESET : Hi-Pot and Grounding Test : ¡ ¡ Clock and Clock Phase : ¡ ¡ R, G, B and White Colors Contrast : ¡ ¡ Screen Uniformity and Flicker : ¡ ¡ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 98 EP750/755 Dead Pixel/Blemish Pixel : ¡ ¡ Check for Secondary Display Modes Factory Reset : | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 99 EP750/755 CHAPTER FIRMWARE UPGRADING PROCEDURE This chapter provides the related information about the necessary equipment, hardware setup and software upgrade procedures for Firmware Upgarde. The data is for your reference. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 100: Equipment Needed

    EP750/755 9-1 Equipment Needed Hardware : – Fixture 1. Cable RS232 To Mini Din 3Pin 1800mm EP755 (P/N : 42.83618.001) – PC – EP750/755 Software : – Config.HEX – FLASHER.HEX – FlashUpgrader.EXE – Gui.HEX – Pixelware.INF – Romcode.HEX | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 101: Setup Procedure

    EP750/755 9-2 Setup Procedure 1. Connect RS232 to mini din 3P Cable to COM1 of PC and EP750/755. COM1 DFP Port 9-3 Upgrading Procedure 1. Execute “FlashUpgrader”. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 102 EP750/755 2. Click “NEXT” icon. 3. Search <Pixelware.inf> file from Browse, then click “NEXT ” icon. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 103 HEX” appear, plug Power Cord into EP750/755 and power on. Click “Standby” button until the message of “Download progress for file gui.hex” appear in five squares, than move off the button of EP750/755. Otherwise, it will appear “Error” message on the following screen.
  • Page 104 EP750/755 6. EP750/755 is under upgrading Firmware as follows. 7. EP750/755 is under upgrading Gui as follows. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 105 EP750/755 8. EP750/755 is under upgrading Config as follows. 9. EP750/755 is under upgrading RomCode as follows. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 106 EP750/755 10. Click “COMPLETE” icon. 11. Wait for starting up EP750/755 (within 10 seconds), then finish the upgrading procedure. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 107: Ddc Key-In Procedure

    EP750/755 CHAPTER DDC KEY-IN PROCEDURE This chapter provides the related information about the necessary equipment, DDC key-in procedure. The data is all for your reference. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 108: Equipment Needed

    RS232 cable DFP-DVI Cable Power Cord Power Adapter EP750/755 projector EDID Driver : depends on the model 10-2 Setup Procedure 1. Plug in the power of the fixture 2. JP1 and JP5 on the fixture are close, and JP2 is open. (Figure 1) 3.
  • Page 109 EP750/755 4. Connect P1 of the fixture with COM1 port of PC by RS232 cable. (Figure 1 and 2) 5. Connect P3 of the fixture with the DVI Input port of EP750/755 by DFP-DVI cable. COM1 Digital Input port Power...
  • Page 110: Ddc Key-In Procedure

    EP750/755 10-3 DDC Key-in Procedure 1. Turn on EP750/755 and run EDID program in the computer. 2. Select COM1 or COM2. 3. And the following picture will show on the screen. 10-4 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 111 5. After finishing the above actions, “DFP Success” will appear on the screen. successful signal 6. Power on EP750/755, then input digital signal. If there is no display, it means EDID is not keyed in sucessfully. Please repeat the step 1~5 again.
  • Page 112: Appendix

    EP750/755 CHAPTER APPENDIX | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |...
  • Page 113: Serial Number System Definition

    11-1.1 Serial Number Format for Projector A BBB Y WW C D BEMO EEEE A = Optoma, B~Z = OEM Product code (ex: 836 = EP755, 837=EP750) Y = Last number of the year (ex: 2000 - 0, 2001 - 1) Week of year...
  • Page 114 Thank you for your backing our service manual up. In order to refine our content of the service manual and satisfy your requirement. We expect you can offer us some precious opinions for reference. Assessment : A. What do you think about the content after reading EP750/755 Service Manual? t n I i t c...

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