--ContentsSERVICE MANUAL ....................................................... 1Contents ........................................................................ Safety Instructions ......................................................... 3Safety Precautions ..................................................... 3Product Safety Notice ................................................. 3Service Personnel Warning ........................................ 3Battery Replacement Notice ....................................... 3Specifications ................................................................ 4Circuit Protections ......................................................... 5Thermal switch ........................................................... 5Lamp cover switch ...................................................... 5Fuse ............................................................................ 5Warning temperature and power failure protection .... 6Maintenance .................................................................. 7Cleaning the Filter ...................................................... 7Resetting the Filter Counter ........................................ 7Lamp Replacement .................................................... 8Resetting the Lamp Counter ....................................... 9How to check Lamp Used Time .................................. 9Cleaning ................................................................... 10Security Function Notice.............................................. 11Security Function Disable ......................................... 11Antitheft Alarm Function Disable .............................. 11Mechanical Disassembly ............................................. 1Optical Parts Disassembly........................................... 16Adjustments ................................................................. Adjustments after Parts Replacement ...................... Optical Adjustments..................................................... 3Contrast adjustment ................................................. 3Integrator lens adjustment ........................................ 4Relay lens-Out adjustment ....................................... 5Electrical Adjustments ................................................. 6Service Adjustment Menu Operation ........................ 6Memory IC (IC1391) Replacement ........................... 6Circuit Adjustments ................................................... 7Test Points and Locations ........................................ 31Service Adjustment Data Table ................................ 3Chassis Block Diagrams.............................................. 45Chassis over view ..................................................... 45System control .......................................................... 46Lamp control ............................................................. 47Audio circuit .............................................................. 48Power supply & protection circuit ............................. 49Fan control circuit ..................................................... 50Alarm circuit .............................................................. 51IIC bus control circuit ................................................ 5Network (MCI) circuit ................................................ 53Troubleshooting ........................................................... 54Indicators and Projector Condition ........................... 54No Power .................................................................. 55No Picture ................................................................. 56No Sound .................................................................. 57Control Port Functions ................................................. 58Scaler I/O Port Functions (PW190) .......................... 58IIC Bus D/A Converter Port Functions (M6334) ..... 59I/O Expander Port Functions (TE7783) ................... 60Waveform .................................................................... 61IC Block Diagrams ....................................................... 6Electrical Parts List ...................................................... 70Electrical Parts Location ........................................... 71Electrical Parts List ................................................... 7Mechanical Parts List ................................................ 10Cabinet Parts Location ........................................... 10Optical Parts Location ............................................ 103Mechanical Parts List ............................................. 107Diagrams & Drawings ..................................................A1Parts description and reading in schematic diagram ...ASchematic Diagrams ...................................................A3Printed Wiring Board Diagrams .................................A11Pin description of diode, transistor and IC .................A15Note on Soldering ......................................................A16