Sanyo PLC-XP41, Service Manual

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Contents
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Safety instructions ________________________________________________3
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Specifications __________________________________________________ 4
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Note on Servicing ______________________________________________ 5
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Adjustments after parts replacement ________________________________ 5
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Circuit protections ______________________________________________ 6-7
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Fuse ____________________________________________________ 6
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Thermal switch ____________________________________________ 6
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Interlock switch ____________________________________________ 6
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Warning temperature and power failure protection ________________ 7
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Mechanical disassemblies ______________________________________ 8-12
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Optical parts disassemblies ____________________________________ 13-16
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LCD panel/prism ass’y replacement ________________________________ 17
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Lamp replacement ______________________________________________ 18
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Optical adjustments __________________________________________ 19-21
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Contrast adjustment ________________________________________ 19
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Condenser adjustment ______________________________________ 20
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Relay lens adjustment ______________________________________ 21
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Electric adjustments __________________________________________ 22-30
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Service adjustment menu operation ____________________________ 22
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Circuit adjustments ______________________________________ 23-27
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Service adjustment data table ______________________________ 28-33
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Test points and locations ____________________________________ 34
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Troubleshooting ______________________________________________ 35-40
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No power ______________________________________________ 35-36
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No picture ____________________________________________ 37-38
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No sound ________________________________________________ 39
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Lens motor problems ______________________________________ 40
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Control port functions ________________________________________ 41-45
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Waveforms __________________________________________________ 46-47
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Cleaning ______________________________________________________ 48
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IC block diagrams ____________________________________________ 49-59
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Service parts lists ____________________________________________ 60-92
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Electrical parts list ______________________________________ 60-85
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Mechanical parts list ____________________________________ 87-89
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Optical parts list ________________________________________ 90-92
Drawings & Diagrams
______________________________________ A1-A16
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Parts description and reading in schematic diagram ____________________ A2
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Circuit block diagram ____________________________________________ A3
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Power supply lines ______________________________________________ A4
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Schematic diagrams ________________________________________ A5-A12
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Printed wiring board diagrams ________________________________ A13-A15
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Pins description of ICs, transistors, diodes __________________________ A16