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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
Thermostats (SW903, SW904) .......................................5
Mechanical sensor switches (SW902, SW6581) ............
6
Temperature sensors, wind sensors and thermistor .......7
Power failure and fan lock detection ...............................8
Maintenance .................................................................. 9
Filter Instructions .............................................................9
Replacing the Filter Cartridge ....................................... 10
Resetting the Filter Counter .......................................... 11
Resetting the Scroll Counter ......................................... 11
Lamp Management ....................................................... 12
Lamp Replacement ....................................................... 13
Resetting the Lamp Counter ......................................... 14
Checking the projector used time and lamp used time . 14
Quick Maintenance ....................................................... 15
Cleaning the optical parts..............................................16
Cleaning the Projection Lens ........................................16
Cleaning the Projector Cabinet .....................................16
Security Function Notice ............................................. 17
Lens Mounting ............................................................. 18
Mechanical Disassembly............................................. 22
Mechanical disassembly flow chart...............................22
Mechanical disassembly ...............................................23
Optical Parts Disassembly .......................................... 39
Adjustments ................................................................. 50
Adjustments after Parts Replacement...........................50
Optical Adjustments .................................................... 51
Optical adjustment location ...........................................51
Before Adjustment .........................................................52
1. Optical Center adjustment .........................................54
2. PBS adjustment .........................................................
58
3. Contrast adjustment ..................................................59
4. Back focus adjustment ..............................................60
5. Convergence adjustment ..........................................61
Adjustment ....................................................................64
Electrical Adjustments ................................................. 65
Service Adjustment Menu Operation ............................65
Memory IC (IC302, IC802) Replacement .....................
65
Circuit Adjustments .......................................................66
Test Points and Locations .............................................70
Service Adjustment Data Table ..................................... 71
Chassis Description .................................................. 120
Chassis over view........................................................120
Boards Connection ...................................................... 121
Troubleshooting ......................................................... 122
No Picture .................................................................... 122
No Power ..................................................................... 127
Power Supply and Power Fail Detection ..................... 128
Power failure detection tree ......................................... 129
Power (DC) power supply system ...............................130
Fan Control System ..................................................... 131
Temperature Abnormality ............................................ 132
Power Lens and Shutter System and Abnormality ...... 133
Lamp Abnormality .......................................................134
Power failure detection system ...................................135
Error information table .................................................135
Error History Log ......................................................... 136
Diagnosis of Power Failure with RS-232C port ...........
137
Diagnosis procedure ...................................................137
Indicators and Projector Condition ..............................138
Serial Control ..............................................................141
Serial Control Interface ............................................... 141
Control Port Functions............................................... 143
Waveform .................................................................. 149
IC Block Diagrams..................................................... 150
Parts Location Diagrams ........................................... 155
Mechanical Parts List ................................................ 169
Electrical Parts List .................................................... 171
Diagrams & Drawings .................................................. A1
Parts description and reading in schematic diagram ..A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams ................................. A13
Pin description of diode, transistor and IC ................A23
Note on Soldering ......................................................A24
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