Daewoo CP-885 Service Manual page 3

Service ma n ual WP-895/895F. CP885/885F
4-5-2 TDA8358J .............................................................................................................................................. 33
4-6 TDA6107Q .......................................................................................................................................................... 34
4-7 24C16 - 16 Kb EEPROM .................................................................................................................................... 37
4-8 STR - F6653 ....................................................................................................................................................... 38
4-8-1 General description ............................................................................................................................... 38
4-8-2 Features ................................................................................................................................................. 38
4-8-3 Block diagram ....................................................................................................................................... 38
4-8-4 Pin description ...................................................................................................................................... 39
4-8-5 Control part - electrical characteristics ................................................................................................. 39
4-8-6 MOSFET electrical characteristics ....................................................................................................... 40
5 - Circuit description .................................................................................................................................................. 41
5-1 Block diagram .................................................................................................................................................... 41
5-2 IF section ............................................................................................................................................................ 42
5-2-1 Block diagram ....................................................................................................................................... 42
5-2-2 Vision IF Amplifier .................................................................................................................................. 42
5-2-3 Tuner-and VIF-ACG ................................................................................................................................ 43
5-2-4 FPLL, VCO and AFC .............................................................................................................................. 43
5-2-5 Video Demodulation and Amplifier ...................................................................................................... 44
5-5-6 Sound IF Amplifier and SIF-AGC ....................................................................................................... 44
5-2-7 Quasi-Parallel-Sound (QPS) Mixer ......................................................................................................... 44
5-2-8 Standard Switch .................................................................................................................................... 44
5-2-9 L' Switch .................................................................................................................................................. 44
5-2-10 Internal Voltage Stabiliser ..................................................................................................................... 44
5-3 Video - VCT description ...................................................................................................................................... 45
5-3-1 Introduction ............................................................................................................................................ 45
5-3-2 Video Front-end ..................................................................................................................................... 45
5-3-3 Input Selector ........................................................................................................................................ 45
5-3-4 Clamping ................................................................................................................................................ 45
5-3-5 Automatic Gain Control ........................................................................................................................ 45
5-3-6 Digitally Controlled Clock Oscillator ..................................................................................................... 45
5-3-7 Analogue Video Output ........................................................................................................................ 45
5-3-8 Adaptive Comb Filter (VCT3834A only) ................................................................................................ 46
5-3-9 Color Decoder ....................................................................................................................................... 46
5-3-10 Horizontal Scaler ................................................................................................................................... 46
5-3-11 Video Sync Processing ........................................................................................................................ 47
5-3-12 Display Processing ................................................................................................................................ 47
5-3-13 Chroma Transient Improvement ............................................................................................................ 47
5-3-14 Video Back-end ..................................................................................................................................... 47
5-3-15 CRT Measurement and Control ........................................................................................................... 48
5-3-16 Average Beam Current Limiter ............................................................................................................. 48
5-3-17 Analogue RGB Insertion ...................................................................................................................... 48
5-3-18 Fast-Blank Monitor ................................................................................................................................ 48
5-3-19 Vertical and East/West Deflection ....................................................................................................... 49
5-3-20 EHT Compensation ................................................................................................................................ 49
5-3-21 Reset Function ...................................................................................................................................... 49
5-3-22 Standby and Power-On ........................................................................................................................ 49
5-4 Micro-controller ...............................................................................................................
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