Hughes JVC Projector 250 Service Manual
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SERVICE MANUAL Model 250 Projector Phone: (760) 929-5300 Fax: (760) 929-5410 2310 Camino Vida Roble Carlsbad, California 92009
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iiModel 250 Service Manual DECLARATION OF CONFORMITY PER ISO/IEC GUIDE 22 AND EN 45014 Manufacturer : Hughes JVC 2310 Camino Vida Roble Carlsbad, Ca 92009 USA Hughes-JVC declares that this product conforms to the following Product Specifications (Directive/Standard): Safety: EN 60950 IEC 950 (1992) EMC: EN 55022 (1988) / CISPR-22 (1986) Class A EN 50082-1 (1992) / IEC 801-2(1991) EN 50082-1 (1992) / IEC 801-3(1984) EN 50082-1 (1992) / IEC 801-4(1988) ANSI C63.4-1992, FCC, Part 15, Class A In addition,...
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Model 250 Projector Service Manual iii Table of Contents Safety Information.................................................................................... v Chapter 1 Introduction 1.1 Safety...................................................................................................... 1-1 1.2 Updates ................................................................................................... 1-2 1.3 Acronyms...
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ivModel 250 Service Manual 6.5 IR Detectors............................................................................................ 6-4 6.6 EMI Shield ............................................................................................. 6-4 6.7 Cleaning Lenses, ILA ® Assemblies, and Mirrors................................... 6-5 Chapter 7 Troubleshooting 7.1 Safety...................................................................................................... 7-1 7.2...
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Chapter 1---Introduction Model 250 Service Manual 1-1 1.0 Introductio n Contents 1.1 Safety............................................................................................................ 1-1 1.2 Updates ......................................................................................................... 1-2 1.3 Acronyms Used ............................................................................................ 1-2 The Model 250 Service Manual will provide information on how the...
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Chapter 1---Introduction 1-2 Model 250 Service Manual When performing procedures that call for the projector’s power to be on, always wear high voltage gloves (ANSI/ASTM 10,000 volt rated) when working around the CRTs, Arc Lamp or power supplies. Wear safety goggles (rated X5) when working near the light path from the Arc Lamp or at all times around the projection lens. 1.2 Updates Hughes-JVC will periodically provide bulletins and /or manual supplements to ensure the continued accuracy of this service...
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Chapter 1---Introduction Model 250 Service Manual 1-3 SECAM Sequential couleur a memoire (sequencial color with memory SRB Scan Reversal Board SYNC Synchronization TTL Transistor-Transistor Logic UL Underwriter Laboratories UV Ultraviolet VAB Video Amplifier Board VCO Voltage Controlled Oscillator VIC Video Input Card VIN Video Input VPB Video Processor Board VSYNC Vertical Sync VTR Video Tape Recorder Y Luminance
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Chapter 2---System Description Model 250 Service Manual 2-1 2.0 System De s cription Contents 2.1 Introduction .................................................................................................. 2-1 2.2 Electrical Section.......................................................................................... 2-2 Incoming Power Circuit ............................................................................. 2-2 Power Supplies...
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Chapter 2---System Description 2-2 Model 250 Service Manual Figure 2-1 Overview of the Model 250 projector showing major components 2.2 Electrical Section The electrical section consists of the Incoming Power Circuit, and the Power Supplies and the Igniter Assembly. The following paragraphs give a list of major components and a brief description of those components. For a more detailed description of a component, refer to the chapter and section dedicated to that particular component. Incoming Power...
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Chapter 2---System Description Model 250 Service Manual 2-3 Igniter Assembly The Igniter Assembly provides the high voltage pulse that lights the Arc Lamp and acts as a link from the Arc Lamp Power Supply to the Arc Lamp after the Arc Lamp has been lit. ! Igniter - The Igniter actually performs three functions. It is a step-up transformer that supplies the high voltage pulse to light the Arc Lamp. It also supplies the spark gap for the high voltage pulse. Once the Arc Lamp is lit, the Igniter acts as a...