Eiki LC-XB42, Service Manual

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Contents
SERVICE MANUAL ....................................................... 1
Contents ........................................................................
Safety Instructions ......................................................... 3
Safety Precautions ..................................................... 3
Product Safety Notice ................................................. 3
Service Personnel Warning ........................................ 3
Specifications ................................................................ 4
Circuit Protections ......................................................... 5
Thermal switch ........................................................... 5
Lamp cover switch ...................................................... 5
Fuse ............................................................................ 5
Warning temperature and power failure protection ..... 6
Maintenance .................................................................. 7
Cleaning the Filter ...................................................... 7
Resetting the Filter Counter ........................................ 7
Lamp Replacement .................................................... 8
Resetting the Lamp Counter ....................................... 9
How to check Lamp Used Time .................................. 9
Cleaning ................................................................... 10
Security Function Notice.............................................. 11
Security Function Disable ......................................... 11
Mechanical Disassembly ............................................. 1
Optical Parts Disassembly........................................... 16
Adjustments .................................................................
Adjustments after Parts Replacement ......................
Optical Adjustments ..................................................... 3
Contrast adjustment ................................................. 3
Integrator lens adjustment ........................................ 4
Relay lens-Out adjustment ....................................... 5
Electrical Adjustments ................................................. 6
Service Adjustment Menu Operation ........................ 6
Memory IC (IC1391) Replacement ........................... 6
Circuit Adjustments ................................................... 7
Test Points and Locations ......................................... 31
Service Adjustment Data Table ................................. 3
Chassis Block Diagrams.............................................. 48
Chassis over view ..................................................... 48
System control .......................................................... 49
Lamp control ............................................................. 50
Audio circuit .............................................................. 51
Power supply & protection circuit ............................. 5
Fan control circuit ..................................................... 53
IIC bus control circuit ................................................ 54
Troubleshooting ........................................................... 55
Indicators and Projector Condition ........................... 55
No Power .................................................................. 56
No Picture ................................................................. 57
No Sound .................................................................. 58
Control Port Functions ................................................. 59
Scaler I/O Port Functions (PW190) .......................... 59
Waveform .................................................................... 60
IC Block Diagrams ....................................................... 61
Electrical Parts List ...................................................... 68
Electrical Parts Location ........................................... 69
Electrical Parts List ................................................... 70
Mechanical Parts List .................................................. 89
Cabinet Parts Location ............................................. 89
Optical Parts Location .............................................. 90
Mechanical Parts List ............................................... 94
Diagrams & Drawings ..................................................A1
Parts description and reading in schematic diagram ...A
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams ...................................A8
Pin description of diode, transistor and IC .................A1
Note on Soldering ......................................................A13