SERVICE MANUAL LC-XB41 - TechEdu.com
SERVICE MANUAL LC-XB41 - TechEdu.com
SERVICE MANUAL LC-XB41 - TechEdu.com
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Contents<br />
<strong>SERVICE</strong> <strong>MANUAL</strong> ................................................... 1<br />
Contents......................................................................... 2<br />
Safety Instructions.......................................................... 3<br />
Safety Precautions...................................................... 3<br />
Product Safety Notice................................................. 3<br />
Service Personnel Warning......................................... 3<br />
Specifications................................................................. 4<br />
Circuit Protections.......................................................... 5<br />
Thermal switch............................................................ 5<br />
Lamp cover switch...................................................... 5<br />
Fuse............................................................................ 5<br />
Warning temperature and power failure protection..... 6<br />
Maintenance................................................................... 7<br />
Cleaning the Filter....................................................... 7<br />
Resetting the Filter Counter........................................ 7<br />
Lamp Replacement..................................................... 8<br />
Resetting the Lamp Counter....................................... 9<br />
How to check Lamp Used Time.................................. 9<br />
Cleaning.................................................................... 10<br />
Security Function Notice.............................................. 11<br />
Security Function Disable......................................... 11<br />
Mechanical Disassembly.............................................. 12<br />
Optical Parts Disassembly........................................... 16<br />
Adjustments................................................................. 22<br />
Adjustments after Parts Replacement....................... 22<br />
Optical Adjustments..................................................... 23<br />
Contrast adjustment.................................................. 23<br />
Integrator lens adjustment......................................... 24<br />
Relay lens-Out adjustment........................................ 25<br />
Electrical Adjustments.................................................. 26<br />
Service Adjustment Menu Operation........................ 26<br />
Memory IC (IC1391) Replacement........................... 26<br />
Circuit Adjustments................................................... 27<br />
Test Points and Locations......................................... 31<br />
Service Adjustment Data Table................................. 32<br />
Chassis Block Diagrams.............................................. 45<br />
Chassis over view..................................................... 45<br />
System control.......................................................... 46<br />
Lamp control............................................................. 47<br />
Audio circuit............................................................... 48<br />
Power supply & protection circuit.............................. 49<br />
Fan control circuit...................................................... 50<br />
IIC bus control circuit................................................. 51<br />
Troubleshooting........................................................... 52<br />
Indicators and Projector Condition............................ 52<br />
No Power.................................................................. 53<br />
No Picture................................................................. 54<br />
No Sound.................................................................. 55<br />
Control Port Functions................................................. 56<br />
Scaler I/O Port Functions (PW190)........................... 56<br />
IIC Bus D/A Converter Port Functions (M62334)...... 57<br />
Waveform..................................................................... 58<br />
IC Block Diagrams....................................................... 59<br />
Electrical Parts List....................................................... 66<br />
Electrical Parts Location............................................ 67<br />
Electrical Parts List.................................................... 68<br />
Mechanical Parts List................................................... 88<br />
Cabinet Parts Location.............................................. 88<br />
Optical Parts Location............................................... 89<br />
Mechanical Parts List................................................ 93<br />
Diagrams & Drawings..................................................A1<br />
Parts description and reading in schematic diagram...A2<br />
Schematic Diagrams....................................................A3<br />
Printed Wiring Board Diagrams....................................A9<br />
Pin description of diode, transistor and IC.................A13<br />
Note on Soldering......................................................A14<br />
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