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CONTENTS
– FILE “COVERPGE” –
– FILE “EXPOSED” –
SAFETY PRECAUTIONS ························································································································
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PCBs LOCATION ····································································································································
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EXPOSED VIEW ······································································································································
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HORIZONTAL POSITION ADJUSTMENT OF ITG 1 ASSY····································································
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DISASSEMBLY ········································································································································
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LEAD DRESS ··········································································································································
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PACKING
···········································································································································
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– FILE “MAINTENA” –
LAMP REPLACEMENT ···························································································································
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MAINTENANCE ·······································································································································
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Cleaning the air-filter···························································································································
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Cleaning the projector and the ventilation slots ··················································································
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Cleaning the lens ································································································································
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DUST ON LCD PANEL ····························································································································
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SERVICE COMMANDS ···························································································································
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LIFE TIME OF THE CONSUMABLE PARTS ··························································································
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REPLACEMENT OF MAIN PCB ASSY···································································································
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ABOUT LASER BEAM ····························································································································
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– FILE “ELCTADJ” –
ELECTRICAL ADJUSTMENTS···············································································································
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Necessary Equipment and Connecting·······························································································
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Test Signal ··········································································································································
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Adjustment with Microsoft
Windows
95 Operating System····························································
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Adjustment Procedures·······················································································································
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A/D Pre-Amplification Circuit Adjustment
1. Clamp Level Adjustment ····································································································
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2. A/D Convertor Adjustment ·································································································
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Liquid Crystal Panel Driving Adjustment Circuit Adjustment
3. Flicker Adjustment ·············································································································
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4. White Balance (50%) Adjustment ······················································································
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5. White Balance (20%) Adjustment ······················································································
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6. Ghost Adjustment ··············································································································
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7. Vertical Stripes of pixels·····································································································
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– FILE “DIAGNO” –
DIAGNOSIS INFORMATION ···················································································································
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CONTROL THIS PROJECTOR BY USING A PERSONAL COMPUTER···············································
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USING THE WARNING HISTORY RECOGNITION SOFTWARE (PCGCe Ver.6) ··································
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– FILE “PARTSLST” –
PARTS LIST ···········································································································································
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– FILE “SCHEMATC” –
IC BLOCK DIAGRAMS
SCHEMATIC DIAGRAMS
PRINTED CIRCUIT BOARD PARTS LAYOUT
Many electrical and mechanical parts in the LCD PROJECTOR have special safety related characteristics.
These characteristics are often not evident from visual inspection nor can the protection afforded by them
necessarily be obtained by using replacement components rated for higher voltage, etc. Replacement parts
which have these special safety characteristics are identified in this service manual. Electrical components
having such features are identified by shading on the schematic diagram and the parts list of this service
manual and by the supplementary sheet for this chassis to be issued subsequently.
PRODUCT SAFETY NOTICE
TRADEMARK, REGISTERED TRADEMARK
Apple, Macintosh are registered trademarks of Apple Computer Inc.
IBM, VGA, PS/2 are trademarks or registered trademarks of International Business Machines Corporation.
Microsoft
Windows
95 is a registered trademark of Microsoft in the U.S. and other countries.
Space Pointer is registered trademarks of ALPS ELECTRIC CO., LTD.
Other brand or product names are trademarks or registered trademarks of their respective holders.
Summary of Contents for S290U
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