Sanyo PDG-DHT8000L - 8000 Lumens, Service Manual, Page: 2 / 242

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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 switches (SW903, SW904) ...............................5
Mechanical sensor switches (SW902, SW1891) .............6
Temperature sensors, wind sensors ...............................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
Optional Color Wheel Installation .................................. 15
Cleaning the Optical Parts ............................................ 16
Security Function Notice ............................................. 17
Lens Mounting and Removing ..................................... 18
Mechanical Disassembly............................................. 21
Mechanical disassembly flow chart...............................21
Mechanical disassembly ...............................................22
Adjustments ................................................................. 37
Adjustments after Parts Replacement...........................37
Service Adjustment Menu Operation ............................38
Optical Adjustments .................................................... 39
Before Adjustment .........................................................39
Mirror adjustment ..........................................................40
Electrical Adjustment ................................................... 41
Circuit Adjustments ....................................................... 41
Test Points and Locations .............................................45
Service Adjustment Data Table .....................................46
Chassis Description .................................................. 122
Chassis over view........................................................122
Boards Connection ...................................................... 123
Troubleshooting ......................................................... 124
No Picture .................................................................... 124
No Power ..................................................................... 126
Power supply lines ......................................................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
Power failure detection tree .........................................136
Error History Log ......................................................... 137
Diagnosis of Power Failure with RS-232C port ...........138
Diagnosis procedure ...................................................138
Indicators and Projector Condition ..............................139
Serial Control ............................................................. 142
Serial Control Interface ............................................... 142
Control Port Functions............................................... 144
IC Block Diagrams..................................................... 148
Parts Location Diagrams ........................................... 156
Mechanical Parts List ................................................ 162
Electrical Parts List .................................................... 164
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 ................A23
Note on Soldering ......................................................A24