
Table of contents
Objective..............................................................................................................5
Model Line Up .....................................................................................................7
Performance Comparison ..................................................................................8
SD Models.........................................................................................................8
HD Models ........................................................................................................8
Specifications......................................................................................................9
SD Models.........................................................................................................9
HD Models ........................................................................................................9
New Features and Circuit Improvements .......................................................10
42” SD PCB Board Layout Diagram ................................................................11
Board Comparison Chart .................................................................................12
Video Signal Block Diagram ............................................................................13
Video Signal Path Explanation ........................................................................15
NTSC \ 480i Video Signal Path .......................................................................15
DVI Input .........................................................................................................17
DVI RGB to YUV Conversion ..........................................................................18
Digital Processor .............................................................................................19
Main Picture ....................................................................................................19
RGB Amplifier..................................................................................................21
RGB/PC Select................................................................................................22
D Board Outline...............................................................................................23
Sync Signal Process .......................................................................................24
SC Board Explanation ......................................................................................25
SS Board Explanation ......................................................................................28
Power Supplies (GP6D Chassis) .....................................................................31
Standby power supply .....................................................................................31
VSUS High Voltage Source.............................................................................32
Main Power Supply .........................................................................................34
VDA and other Voltage Sources......................................................................35
Protection Circuits............................................................................................37
System Control Circuit .....................................................................................39
Panel Operations.............................................................................................39
TV Operations .................................................................................................40
Diagnostic Procedures.....................................................................................41
Diagnostic Flow Charts ....................................................................................42
No Power ........................................................................................................42
No Picture Flowchart 1 ....................................................................................43
No picture Flowchart 2 ....................................................................................44
Dark picture Flowchart ....................................................................................45
Local screen failure ..........................................................................................46
Service Hints ...................................................................................................47
Adjustments ......................................................................................................52
3
Содержание TH42PX20U - 42" HDTV PLASMA DISPLAY
Страница 2: ...2 ...
Страница 6: ...6 ...
Страница 25: ...SC Board Explanation Figure 12 25 ...
Страница 29: ...Figure 16 29 ...
Страница 56: ...Test Point locations Figure 38 56 ...
Страница 60: ...I2 C Menu Structure The values indicated in this flowchart are sampled data Figure 41 60 ...