Daewoo WP-895, Service Manual

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4-5-2 TDA8358J .............................................................................................................................................. 34
4-6 TDA6107Q .......................................................................................................................................................... 35
4-7 24C16 - 16 Kb EEPROM .................................................................................................................................... 38
4-8 STR - F6653 ....................................................................................................................................................... 39
4-8-1 General description ............................................................................................................................... 39
4-8-2 Features ................................................................................................................................................. 39
4-8-3 Block diagram ....................................................................................................................................... 39
4-8-4 Pin description ...................................................................................................................................... 40
4-8-5 Control part - electrical characteristics ................................................................................................. 40
4-8-6 MOSFET electrical characteristics ....................................................................................................... 41
5 - Circuit description .................................................................................................................................................. 42
5-1 Block diagram .................................................................................................................................................... 42
5-2 IF section ............................................................................................................................................................ 43
5-2-1 Block diagram ....................................................................................................................................... 43
5-2-2 Vision IF Amplifier .................................................................................................................................. 43
5-2-3 Tuner-and VIF-ACG ................................................................................................................................ 44
5-2-4 FPLL, VCO and AFC .............................................................................................................................. 44
5-2-5 Video Demodulation and Amplifier ...................................................................................................... 45
5-5-6 Sound IF Amplifier and SIF-AGC ....................................................................................................... 45
5-2-7 Quasi-Parallel-Sound (QPS) Mixer ......................................................................................................... 45
5-2-8 Standard Switch .................................................................................................................................... 45
5-2-9 L’ Switch .................................................................................................................................................. 45
5-2-10 Internal Voltage Stabiliser ..................................................................................................................... 45
5-3 Video - VCT description ...................................................................................................................................... 46
5-3-1 Introduction ............................................................................................................................................ 46
5-3-2 Video Front-end ..................................................................................................................................... 46
5-3-3 Input Selector ........................................................................................................................................ 46
5-3-4 Clamping ................................................................................................................................................ 46
5-3-5 Automatic Gain Control ........................................................................................................................ 46
5-3-6 Digitally Controlled Clock Oscillator ..................................................................................................... 46
5-3-7 Analogue Video Output ........................................................................................................................ 46
5-3-8 Adaptive Comb Filter (VCT3834A only) ................................................................................................ 47
5-3-9 Color Decoder ....................................................................................................................................... 47
5-3-10 Horizontal Scaler ................................................................................................................................... 47
5-3-11 Video Sync Processing ........................................................................................................................ 48
5-3-12 Display Processing ................................................................................................................................ 48
5-3-13 Chroma Transient Improvement ............................................................................................................ 48
5-3-14 Video Back-end ..................................................................................................................................... 48
5-3-15 CRT Measurement and Control ........................................................................................................... 49
5-3-16 Average Beam Current Limiter ............................................................................................................. 49
5-3-17 Analogue RGB Insertion ...................................................................................................................... 49
5-3-18 Fast-Blank Monitor ................................................................................................................................ 49
5-3-19 Vertical and East/West Deflection ....................................................................................................... 50
5-3-20 EHT Compensation ................................................................................................................................ 50
5-3-21 Reset Function ...................................................................................................................................... 50
5-3-22 Standby and Power-On ........................................................................................................................ 50
5-4 Micro-controller ............................................................................................................... .......................................... 50
Service ma nual WP-895/895F. CP885/885F. CP485F