PT-VX505NU, PT-VX505NE, PT-VX505NEA, PT-VW435NU, PT-VW435NE, PT-VW435NEA (serv.man2) — Panasonic Projector Service Manual (repair manual). Page 2

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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
How to check lamp runtime ...................................... 13
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
Mechanical disassembling flow chart ....................... 17
Optical Parts Disassembly ....................................... 30
LCD panel type check .............................................. 30
Servicing Notice ........................................................ 35
Note on the MAIN board replacement ...................... 35
1.EEPROM data transfer .......................................... 35
2. Adjustment data setting ........................................ 36
3. EDID IC replacement ............................................ 36
Adjustments ............................................................... 37
Optical Adjustments .................................................. 38
Contrast adjustment ................................................. 38
Optical center adjustment ......................................... 39
Electrical Adjustments .............................................. 40
Service adjustment menu operation ......................... 40
Circuit adjustments ................................................... 41
Test points and locations .......................................... 44
Service adjustment data  .......................................... 45
Chassis Block Diagrams........................................... 66
Chassis over view ..................................................... 66
System control .......................................................... 67
Lamp control ............................................................. 68
Audio circuit .............................................................. 69
Power supply & protection circuit ............................. 70
Fan control circuit ..................................................... 71
Troubleshooting ........................................................ 72
Indicators and projector condition ............................. 72
The projector is detecting abnormal condition .......... 72
No power .................................................................. 73
No picture ................................................................. 74
No sound .................................................................. 75
Serial Control ............................................................. 76
Serial terminal ........................................................... 76
Control Port Functions ............................................. 79
Scaler I/O port functions (PW190) ............................ 79
IC Block Diagrams ..................................................... 81
Exploded Views & Parts List ..............................SPL-1
Exploded Views ...................................................SPL-2
Mechanical Parts List ........................................SPL-10
Electrical Parts List ...........................................SPL-12
Schematic Diagram & Circuit Boards Diagram .DIA-1
Pin description of diode, transistor and IC ...........DIA-2
Schematic Diagrams ............................................DIA-3
Printed Wiring Board Diagrams ........................DIA-12
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