-2-ContentsSERVICE MANUAL ....................................................... 1Contents ........................................................................ 2Safety 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 ......................................... 11Anititheft Alarm Function Disable ............................. 11Mechanical Disassembly ............................................. 12Optical Parts Disassembly........................................... 16Adjustments ................................................................. 22Adjustments after Parts Replacement ...................... 22Optical Adjustments..................................................... 23Contrast adjustment.................................................. 23Integrator lens adjustment ........................................ 24Relay lens-Out adjustment ....................................... 25Electrical Adjustments ................................................. 26Service Adjustment Menu Operation ........................ 26Memory IC (IC1391) Replacement ........................... 26Circuit Adjustments ................................................... 27Test Points and Locations ......................................... 31Service Adjustment Data Table ................................. 32Chassis Block Diagrams .............................................. 45Chassis over view ..................................................... 45System control .......................................................... 46Lamp control ............................................................. 47Audio circuit .............................................................. 48Power supply & protection circuit .............................. 49Fan control circuit ..................................................... 50Alarm circuit .............................................................. 51IIC bus control circuit ................................................ 52Network (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 (M62334)...... 59I/O Expander Port Functions (TE7783) ................... 60Waveform .................................................................... 61IC Block Diagrams ....................................................... 62Electrical Parts List ...................................................... 70Electrical Parts Location ........................................... 71Electrical Parts List ................................................... 72Mechanical Parts List .................................................. 96Cabinet Parts Location ............................................. 96Optical Parts Location .............................................. 97Mechanical Parts List ............................................. 101Diagrams & Drawings ..................................................A1Parts description and reading in schematic diagram ...A2Schematic Diagrams ...................................................A3Printed Wiring Board Diagrams .................................A11Pin description of diode, transistor and IC .................A15Note on Soldering ......................................................A16