Table of Contents
Objective........................................................................................................................1
Specifications (Models Comparison) ..........................................................................2
Safety Precautions........................................................................................................3
TH-42PD50U Board Description and Part Numbers...................................................4
TH-42PX500U Board Description and Part Numbers ................................................. 5
TH-50PX500 Board Description and Part Numbers....................................................6
Power Supply Outline for 42”and 50” Models ............................................................7
Standby Circuit.........................................................................................................8
Power On Operation .............................................................................................. 12
Power Supply Connections........................................................................................15
P Board.................................................................................................................. 15
PA Board................................................................................................................16
PB Board................................................................................................................17
TH-42PX500U Block Diagram.....................................................................................18
TH-42PX50U Block Diagram.......................................................................................21
TH-42PD50U Block Diagram....................................................................................... 23
Video Input Selection Block Diagram........................................................................ 25
Audio Input Selection Block Diagram ....................................................................... 26
ATSC, SD and PC Card Input Signal Flow ................................................................ 27
DG Board Block Diagram ........................................................................................... 28
Signal Process Circuit ................................................................................................30
Main Picture Signal Flow........................................................................................ 30
Sub Picture Signal Flow.........................................................................................30
RGB Processor ...................................................................................................... 31
D Board Block Diagram .............................................................................................. 32
C1 Board Block Diagram ............................................................................................ 33
SC Board Explanation................................................................................................. 34
SC board Waveform............................................................................................... 35