Sanyo PLC-SU20B, Service Manual

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Contents
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Safety instructions ________________________________________________3
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Specifications __________________________________________________ 4
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Adjustments after parts replacement ________________________________ 5
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Circuit protections ______________________________________________ 6-7
Fuse ______________________________________________________ 6
Thermal switch ______________________________________________ 7
Warning temperature and power failure protection ____________________ 7
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Mechanical disassemblies ______________________________________ 8-13
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Optical parts disassemblies ____________________________________ 14-18
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LCD panel replacement __________________________________________ 19
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Lamp replacement ____________________________________________ 20-22
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Optical adjustments __________________________________________ 23-25
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Convergence adjustment ____________________________________ 23
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Contrast adjustment ________________________________________ 24
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Integrator lens adjustment __________________________________ 25
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Electric adjustments __________________________________________ 26-35
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Service adjustment menu operation ____________________________ 26
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Circuit adjustments ______________________________________ 27-32
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Service adjustment data table ______________________________ 33-34
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Test points and locations ____________________________________ 35
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Troubleshooting ______________________________________________ 36-40
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No power ______________________________________________ 36-38
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No picture ________________________________________________ 39
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No sound ________________________________________________ 40
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Control port functions ________________________________________ 41-42
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Waveforms __________________________________________________ 43-45
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Cleaning ______________________________________________________ 46
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IC block diagrams ____________________________________________ 47-58
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Pins description of ICs, transistors, diodes____________________________ 59
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Parts description in schematic diagram ______________________________ 60
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Service parts lists ____________________________________________ 61-87
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Electrical parts list ______________________________________ 61-81
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Mechanical parts list ____________________________________ 82-87
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Circuit block diagram ____________________________________________ A1
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Power supply lines ______________________________________________ A2
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Schematic diagrams __________________________________________ A3-A9
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Printed wiring board diagrams ________________________________ A10-A12