Panasonic PT-VX400U

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Contents
Contents ........................................................................ 2
Safety Instructions ......................................................... 3
Safety precautions ...................................................... 4
Specifications ................................................................ 5
Circuit Protections ......................................................... 7
Thermal fuse (SW902) ............................................... 7
Lamp cover switch (SW901) ....................................... 7
Fuse (F601) ................................................................ 7
Warning temperature and power failure protection ..... 8
Maintenance .................................................................. 9
Maintenance ............................................................... 9
Replacing the unit ....................................................... 9
Replacing the lamp unit ............................................ 12
Warning message on the non-standard lamp used .. 13
Cleaning ................................................................... 14
Cleaning the projection lens ..................................... 14
Cleaning the projector cabinet .................................. 14
Security Function Notice.............................................. 15
Resetting procedure ................................................. 15
Standby Mode Notice .................................................. 16
Mechanical Disassembly ............................................. 17
Optical Parts Disassembly ........................................... 23
Servicing Notice .......................................................... 28
Note on main board replacement ............................. 28
Adjustments ................................................................. 29
Optical Adjustments ..................................................... 30
Contrast adjustment.................................................. 30
Optical center adjustment ......................................... 31
Electrical Adjustments ................................................. 34
Service adjustment menu operation ......................... 34
Circuit adjustments ................................................... 35
Test points and locations .......................................... 39
Service adjustment data .......................................... 40
Chassis Block Diagrams .............................................. 57
Chassis over view ..................................................... 57
System control .......................................................... 58
Lamp control ............................................................. 59
Audio circuit .............................................................. 60
Power supply & protection circuit .............................. 61
Fan control circuit ..................................................... 62
Troubleshooting ........................................................... 63
Indicators and projector condition ............................. 63
No power .................................................................. 64
No picture ................................................................. 65
No sound .................................................................. 66
Control Port Functions ................................................. 67
Scaler I/O port functions (PW190) ............................ 67
IC Block Diagrams ....................................................... 68
Parts Location Diagram ............................................... 74
Mechanical Parts List .................................................. 81
Electrical Parts List ...................................................... 82
Schematic Diagrams ...................................................A1
Printed Wiring Board Drawings....................................A7