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■ Contents
■ Safety Instructions ________________________________________________3
■ Specifications____________________________________________________4
■ Adjustments after Parts Replacement ________________________________5
■ Circuit Protections ________________________________________________6
Fuse ______________________________________________________6
Thermal switch ______________________________________________6
Interlock switch ______________________________________________6
Warning temperature and power failure protection __________________7
■ Mechanical Disassemblies ________________________________________8
■ Optical Parts Disassemblies ______________________________________13
■ LCD Panel/Prism Ass’y Replacement ________________________________18
■ Lamp Replacement ______________________________________________19
■ Optical Adjustments______________________________________________20
■ Electrical Adjustments ____________________________________________24
Service Adjustment Menu Operation______________________________24
Circuit Adjustments __________________________________________25
Test Points and Locations ______________________________________30
Service Adjustment Data Table __________________________________31
■ Chassis Block Diagrams __________________________________________39
Chassis over view ____________________________________________39
Inputs & video signal processing stage____________________________40
LCD panel driving stage ______________________________________41
Audio signal processing circuit __________________________________42
Motor driving circuit __________________________________________43
System controls ______________________________________________44
Power supply & protection circuit ________________________________45
■ Troubleshooting ________________________________________________46
No Power __________________________________________________46
No Picture __________________________________________________47
No Sound __________________________________________________48
Lens Motor Problems__________________________________________48
■ Control Port Functions____________________________________________49
■ Waveform______________________________________________________54
■ Cleaning ______________________________________________________56
■ IC Block Diagrams ______________________________________________57
■ Service Parts List ____________________________________________67-102
Electrical Parts List ________________________________________67-96
Mechanical Parts List ______________________________________97-102
Drawings & Diagrams
■ Parts description and reading in schematic diagram ____________________ A2
■ Schematic diagrams ________________________________________ A3-A10
■ Printed wiring board diagrams ________________________________ A11-A15
■ Pins description of ICs, transistors, diodes __________________________ A16
