12-1维修手册

CONTENTSPageSafety Instructions1Technical Specifications2Operation InstructionsgBlock Diagram10Power Supply11MC44603 Mixed Frequency Mode GreenlineTM PWM Controller12SFH 506 IR Receiver/Demodulator Device14Remote Control Circuit Diagram14STV 8223B Multistandard Video And Sound IF System15ST6387 Microcontroller With OSD For TV Tuning18STV2112 Pal/Secam TV Processor22STV2116A Pal TV Processor25STV2180A Baseband Chroma Delay Line29STV5112 RGB High Voltage Video Amplifier31STV5347/5348 Teletext IC32STV8225 AM SIF Circuit36TDA 2822 Dual Power Amplifier38TDA 8174 Vertical Deflection Circuit39Service Adjustments41PIN Voltages of IC's and Transistors43Convergence Adjustments51Electronic Parts List53Circuit Diagrams