Sony KP 48S70, Training Manual

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Switching and Comb Filter (S Models) 21
Video Inputs 21
Switching and Comb Filter 21
Picture in Picture (S Model) 23
Sub Y Signal 23
Sub C Signal 23
Sub Decoder, PIP Processor and YUV Switch 23
RA-4 vs. RA-4A 25
RA-4A Features 25
“1080I Capable” 26
RA-4 and RA-4A Circuit Differences 26
Video Path Block 27
Inputs 27
Main Video 27
Sub-Video 27
Video Processor 27
DTV Video Processing Block 29
Component Input Selected 29
RGB Inputs Selected 29
DTV Video Processing 31
Circuit Description 31
VD Mute 33
RGB Mute 33
Appendix 1
Self-Diagnostics i
Standby Power Supply iii
Converter Operation iii
Regulation iii
Over Current Protection (OCP) v
Over Voltage Protection (OVP) v
Secondary Output v
Checking Q621 v
Switching Power Supply vii
Primary Rectifier vii
Oscillator vii
Regulation vii
Soft Start ix
Limit ix
Troubleshooting xi
Horizontal Deflection xv
Horizontal Scanning xv
High Voltage Development xvii
Vertical Deflection xxi
Vertical Drive xxi
Protection xxi
Convergence Block xxiii
Convergence xxiii
Auto Focus (Auto Registration) xxiii