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Contents
SERVICE MANUAL ................................................... 1
Contents ........................................................................ 2
Safety Instructions .........................................................
3
SAFETY PRECAUTIONS ...........................................
3
PRODUCT SAFETY NOTICE ....................................
3
SERVICE PERSONNEL WARNING ...........................
3
Specifications ................................................................
4
Circuit Protections ......................................................... 5
Fuse ............................................................................ 5
Thermal switch ...........................................................
5
Interlock switch ...........................................................
5
Warning temperature and power failure protection .....
6
Air filter care and cleaning ..........................................
6
Lamp Replacement ....................................................... 7
How to reset Lamp Replace Counter .........................
7
How to check Lamp use time ......................................
7
Mechanical Disassemblies ............................................
8
Optical Parts Disassemblies ........................................
13
LCD Panel/Prism Ass’y Replacement .........................
18
Adjustments ................................................................. 19
Turning On the Projector ...........................................
19
Adjustments after Parts Replacement ......................
19
Optical Adjustments ..................................................... 20
Electrical Adjustments .................................................
23
Service Adjustment Menu Operation ........................
23
Memory IC Replacement (IC802) .............................
23
Circuit Adjustments ................................................... 24
Test Points and Locations .........................................
27
Service Adjustment Data Table .................................
28
Chassis Description .....................................................
45
Block Diagrams .........................................................
45
Chassis over view .....................................................
45
Input & video precessing stage ................................ 46
LCD panel driving stage ...........................................
47
Audio signal precessing stage ..................................
48
Lamp control stage ................................................... 49
Fan control stage .....................................................
50
Motor control stage .................................................. 51
Serial
bus control stage ........................................... 52
Power supply control & power failure detection ........
53
LED indicators and projector condition ..................... 54
Power f
ailure detection system ................................ 55
Power failure detection tree ......................................
56
Error History Log ......................................................
57
Diagnosis of Power Failure with RS-232C port ......... 58
Diagnosis procedure ................................................. 58
Error information table ..............................................
59
Control Port Functions .................................................
60
System Control & I/O Port Table ...............................
60
Cleaning ...................................................................... 67
IC Block Diagrams .......................................................
68
Electrical Parts List ......................................................
77
Mechanical Parts List ................................................
108
Cabinet Parts Location ...........................................
108
Optical Parts Location ............................................ 109
Mecanical Parts List ............................................... 113
Diagrams & Drawings ..................................................
A1
Parts description and reading in schematic diagram ...
A2
Schematic Diagrams ...........................................
A3-A10
Printed Wiring Board Diagrams .........................
A11-A16
Pin description of diode, transistor and IC .................
A17