Daewoo DTK-28 Series User manual

Service Manual
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center.
S/M No.TCP850FEF0
CHASSIS : CP-850/F
MODEL : DTK-28
DTK-29
JUN.2006

CP-850/F Service Manual
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CONTENTS
1 MAIN FEATURES 5
1.1 SPECIFICATIONS 5
1.1.1 GENERAL 5
1.2 CHANNEL/FREQUENCY TABLE 6
1.3 ATSS SORTING METHOD 9
1.3.1 GENERAL CASE 9
2 SAFETY INSTRUCTION 11
3 ALIGNMENT INSTRUCTIONS 12
3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE 12
3.2 SERVICE MODE NAVIGATION 12
3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS 12
3.3.1 OPTION 1 13
3.3.2 OPTION 2 13
3.4 TV SET ALIGNMENT 13
3.4.1 LOCAL OSCILLATOR ALIGNMENT 13
3.4.2 G2 ALIGNMENT 13
3.4.3 WHITE BALANCE 14
3.4.4 FOCUS 14
3.4.5 VERTICAL GEOMETRY 14
3.4.6 HORIZONTAL PICTURE CENTRING 14
3.4.7 EAST / WEST CORRECTION 14
3.4.8 AGC 15
4 IC DESCRIPTION 16
4.1 TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER 16
4.1.1 BLOCK DIAGRAM OF THE SDA55XX 16
4.1.2 DESCRIPTION 16
4.1.3 IC MARKING AND VERSION 17
4.1.4 PINNING 17
4.2 VSP9405 - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR
DECODER 18
4.2.1 BLOCK DIAGRAM OF THE VSP9405 19
4.2.2 DESCRIPTION 19
4.2.3 PINNING 21
4.3 DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR 26
4.3.1 BLOCK DIAGRAM OF THE DDP 3315C 26
4.3.2 DESCRIPTION 27
4.3.3 PINNING 29
4.4 MSP341X MULTISTANDARD SOUND PROCESSOR 31
4.4.1 BASIC FEATURES OF THE MSP 341X 31
4.4.1.1 Demodulator & NICAM Decoder Section 31

CP-850/F Service Manual
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4.4.1.2 DSP-Section (Audio Baseband Processing) 32
4.4.1.3 Analogue Section 32
4.4.1.4 NICAM & FM/AM-Mono 32
4.4.1.5 German 2-Carrier System (DUAL FM System) 32
4.5 TDA4470 - MULTISTANDARD VIDEO-IF AND QUASI PARALLEL SOUND PROCESSOR 35
4.5.1 DESCRIPTION 35
4.5.2 FEATURES 35
4.5.3 PINNING 35
4.5.4 BLOCK DIAGRAM 36
4.6 TDA894XJ STEREO AUDIO AMPLIFIER 37
4.6.1 FEATURES 37
4.7 TDA835XJ VERTICAL AMPLIFIER 38
4.7.1 TDA8353J 38
4.8 TDA6108JF 40
4.9 24C16 - 16 KB EEPROM 41
4.10 STR - W6754 42
4.10.1 GENERAL DESCRIPTION 42
4.10.2 FEATURES 42
4.10.3 BLOCK DIAGRAM 42
4.10.4 ELECTRICAL CHARACTERISTICS 43
5 CP-850/F CHASSIS DESCRIPTION 45
5.1 BLOCK DIAGRAM 45
5.2 IF SECTION 46
5.2.1 BLOCK DIAGRAM 46
5.2.2 VISION IF AMPLIFIER 47
5.2.3 TUNER-AND VIF-AGC 47
5.2.4 FPLL, VCO AND AFC 47
5.2.5 VIDEO DEMODULATION AND AMPLIFIER 48
5.2.6 SOUND IF AMPLIFIER AND SIF-AGC 48
5.2.7 QUASI-PARALLEL-SOUND (QPS) MIXER 48
5.2.8 STANDARD SWITCH 48
5.2.9 L SWITCH 48
5.2.10 INTERNAL VOLTAGE STABILISER 48
5.3 VIDEO / RGB
5.3.1 FRONT END 48
5.3.1.1 CVBS Front-End 48
5.3.1.2 Input Selector 49
5.3.1.3 Signal Levels And Gain Control 49
5.3.1.4 Synchronization 49
5.3.1.5 Chroma Decoder 49
5.3.1.6 Luminance Processing 49

CP-850/F Service Manual
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5.3.1.7 RGB Front-End 49
5.3.1.8 Signal Processing 49
5.3.1.8.1 Horizontal Prescaler 49
5.3.1.8.2 Noise Reduction 50
5.3.1.8.3 Noise Measurement 50
5.3.1.8.4 Operation Modes 50
5.3.1.8.5 Digital 656 Output 50
5.3.2 BACK END 50
5.3.2.1 Digital Input Interface 50
5.3.2.2 Horizontal Scaler 50
5.3.2.3 Luma Contrast and Brightness 50
5.3.2.4 Black Level Expander/Compressor (BLEC) 50
5.3.2.5 Luma Sharpness Enhancer (LSE) 51
5.3.2.6 Dynamic Peaking 51
5.3.2.7 Luma Transient Improvement (LTI) 51
5.3.2.8 Mixing of Dynamic Peaking and LTI 51
5.3.2.9 Chroma Transient Improvement 51
5.3.2.10 Analog Back End 52
5.3.2.11 Analog RGB Insertion 52
5.3.2.12 CRT Measurement and Control 52
5.3.2.13 Synchronization and Deflection 53
5.3.2.14 EHT Compensation 53
5.4 MICROCONTROLLER 53
5.4.1 MICROCONTROLLER FEATURES 53
5.4.2 ACQUISITION FEATURES 54
5.4.3 PORTS 54
5.4.4 CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE 54
5.4.5 OVER CURRENT PROTECTION 55
5.5 TELETEXT DISPLAY 55
5.6 SOUND PROCESSING 56
5.6.1 ANALOGUE SOUND IF - INPUT SECTION 56
5.6.2 QUADRATURE MIXERS 56
5.6.3 PHASE AND AM DISCRIMINATION 56
5.6.4 NICAM DECODER 57
5.6.5 DSP SECTION 57
5.6.6 SOUND MODE SWITCHING 57
5.7 SOUND AMPLIFICATION 57
5.7.1 POWER AMPLIFIER 57
5.7.2 MODE SELECTION 57
5.8 VERTICAL DEFLECTION 58
5.8.1 FLYBACK VOLTAGE 58
5.8.2 PROTECTION 58
5.8.3 GUARD CIRCUIT 58
5.8.4 DAMPING RESISTOR 58

5.8.5 EAST-WEST AMPLIFIER (TDA8358J ONLY) 58
6 SERVICE PARTS LIST 59
7 SCHEMATIC DIAGRAM 66
8 PRINTED CIRCULT BOARD 67
9 EXPLODED VIEW 69
CP-850/F Service Manual
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