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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 ................................................................. 49
Adjustments after Parts Replacement...........................49
Optical Adjustments .................................................... 50
Optical adjustment location ...........................................50
Before Adjustment ......................................................... 51
1. Optical Center adjustment .........................................53
2. PBS adjustment .........................................................
57
3. Contrast adjustment ..................................................58
4. Back focus adjustment ..............................................59
5. Convergence adjustment ..........................................60
Adjustment ....................................................................63
Electrical Adjustments ................................................. 64
Service Adjustment Menu Operation ............................64
Memory IC (IC302, IC802) Replacement .....................
64
Circuit Adjustments .......................................................65
Test Points and Locations .............................................69
Service Adjustment Data Table .....................................70
Chassis Description ...................................................119
Chassis over view........................................................ 119
Boards Connection ......................................................120
Troubleshooting ......................................................... 121
No Picture .................................................................... 121
No Power ..................................................................... 126
Power Supply and Power Fail Detection ..................... 127
Power failure detection tree ......................................... 128
Power (DC) power supply system ...............................129
Fan Control System ..................................................... 130
Temperature Abnormality ............................................ 131
Power Lens and Shutter System and Abnormality ...... 132
Lamp Abnormality .......................................................133
Power failure detection system ...................................134
Error information table .................................................134
Error History Log ......................................................... 135
Diagnosis of Power Failure with RS-232C port ...........
136
Diagnosis procedure ...................................................136
Indicators and Projector Condition ..............................137
Serial Control ............................................................. 140
Serial Control Interface ............................................... 140
Control Port Functions............................................... 142
Waveform .................................................................. 148
IC Block Diagrams..................................................... 149
Parts Location Diagrams ........................................... 154
Mechanical Parts List ................................................ 168
Electrical Parts List .................................................... 169
Diagrams & Drawings .................................................. A1
Parts description and reading in schematic diagram ..A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams ................................. A15
Pin description of diode, transistor and IC ................A25
Note on Soldering ......................................................A26
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