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
Summary of Contents for TH-42PX50U
Page 40: ...SC board Waveform Figure 30 SU And SD Board Shift Registers Figure 31 35 ...
Page 43: ...SS Board Schematic Figure 33 SS Board Waveform Figure 34 38 ...
Page 66: ...Adjustment Volume Locations Figure 53 61 ...
Page 67: ...Test Point Locations Figure 54 62 ...
Page 71: ...Scan and Sustain Drive Waveform Figure 55 Scan and Sustain Drive Check points Figure 56 66 ...
