■ Contents________________________________________________________2 ■ Safety Instructions ________________________________________________3 PRODUCT SAFETY NOTICE ____________________________________3 SERVICE PERSONNEL WARNING ______________________________3 SAFETY PRECAUTIONS ______________________________________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 ______________________________________14 ■ LCD Panel/Prism Ass’y Replacement ________________________________19 ■ Lamp Replacement ______________________________________________20 ■ Optical Adjustments ______________________________________________21 ■ Electrical Adjustments ____________________________________________25 Service Adjustment Menu Operation______________________________25 Circuit Adjustments __________________________________________26 Service Adjustment Data Table __________________________________30 Test Points and Locations ______________________________________34 ■ Troubleshooting ________________________________________________35 No Power __________________________________________________35 No Picture __________________________________________________37 No Sound __________________________________________________39 Lens Motor Problems__________________________________________39 ■ Control Port Functions ____________________________________________40 ■ Waveform ______________________________________________________44 ■ Cleaning ______________________________________________________46 ■ IC Block Diagrams ______________________________________________47 ■ Service parts lists ____________________________________________ 55-87 ● Electrical parts list ______________________________________ 55-80 ● Mechanical parts list ____________________________________ 81-87 Drawings & Diagrams ______________________________________ A1-A18 ■ Parts description and reading in schematic diagram____________________ A2 ■ Circuit block diagram ____________________________________________ A3 ■ Power supply lines ______________________________________________ A4 ■ Printed wiring board diagrams ________________________________ A5-A10 ■ Schematic diagrams ________________________________________ A11-A18 ■ Pins description of ICs, transistors, diodes __________________________ A19