Daewoo DTH-29U3 Manuale utente

OTC 2003

CHASSIS : CP-830F

MODEL :

DTH-29U3

S/M No.TCN830FEF0

CP830F Service Manual

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CONTENTS

DOCUMENT HISTORY 5

1 MAIN FEATURES 5

1.1SPECIFICATIONS 5

1.1.1 GENERAL 5

1.1.2 EURO-SCART 1 (21 Pin) 5

1.1.3 EURO-SCART 2 (21 Pin) 6

1.2CHANNEL/FREQUENCY TABLE 7

1.3ATSS SORTING METHOD 10

1.3.1 GENERAL CASE 10

1.3.2 SPECIAL CASE 10

2 SAFETY INSTRUCTION 12

3 ALIGNMENT INSTRUCTIONS 13

3.1MICROCONTROLLER CONFIGURATION : SERVICE MODE 13

3.2SERVICE MODE NAVIGATION 13

3.3MICROCONTROLLER CONFIGURATION : OPTION BITS 13

3.3.1 OPTION 1 14

3.3.2 OPTION 2 14

3.4 TV SET ALIGNMENT 14

3.4.1 LOCAL OSCILLATOR ALIGNMENT 14

3.4.2 G2 ALIGNMENT 14

3.4.3 WHITE BALANCE 15

3.4.4 FOCUS 15

3.4.5 VERTICAL GEOMETRY 15

3.4.6 HORIZONTAL PICTURE CENTRING 15

3.4.7 EAST / WEST CORRECTION 15

3.4.8 AGC 16

4 IC DESCRIPTION 17

4.1TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER 17

4.1.1 BLOCK DIAGRAM OF THE SDA55XX 17

4.1.2 DESCRIPTION 17

4.1.3 IC MARKING AND VERSION 18

4.1.4 PINNING 18

4.2 VSP9412A - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR

DECODER 19

4.2.1 BLOCK DIAGRAM OF THE VSP9412A 20

4.2.2 DESCRIPTION 20

4.2.3 PINNING 22

4.3DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR 23

4.3.1 BLOCK DIAGRAM OF THE DDP 3315C 24

4.3.2 DESCRIPTION 24

4.3.3 PINNING 26

4.4MSP341X MULTISTANDARD SOUND PROCESSOR 28

4.4.1 BASIC FEATURES OF THE MSP 341X 28

4.4.1.1 Demodulator & NICAM Decoder Section 28

4.4.1.2 DSP-Section (Audio Baseband Processing) 29

CP830F Service Manual

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4.4.1.3 Analogue Section 29

4.4.1.4 NICAM & FM/AM-Mono 29

4.4.1.5 German 2-Carrier System (DUAL FM System) 29

4.5 TDA4470 - MULTISTANDARD VIDEO-IF AND QUASI PARALLEL SOUND PROCESSOR 32

4.5.1 DESCRIPTION 32

4.5.2 FEATURES 32

4.5.3 PINNING 32

4.5.4 BLOCK DIAGRAM 33

4.6TDA894XJ STEREO AUDIO AMPLIFIER 34

4.6.1 FEATURES 34

4.7TDA835XJ VERTICAL AMPLIFIER 35

4.7.1 TDA8357J 35

4.7.2 TDA8358J 37

4.8TDA6107Q 39

4.924C16 - 16 KB EEPROM 40

4.10 STR - F6654 41

4.10.1 GENERAL DESCRIPTION 41

4.10.2 FEATURES 41

4.10.3 BLOCK DIAGRAM 41

4.10.4 PIN DESCRIPTION 42

4.10.5 CONTROL PART - ELECTRICAL CHARACTERISTICS 42

4.10.6 MOSFET ELECTRICAL CHARACTERISTICS 43

5 CP830 CHASSIS DESCRIPTION 44

5.1BLOCK DIAGRAM 44

5.2IF SECTION 45

5.2.1 BLOCK DIAGRAM 45

5.2.2 VISION IF AMPLIFIER 46

5.2.3 TUNER-AND VIF-AGC 46

5.2.4 FPLL, VCO AND AFC 46

5.2.5 VIDEO DEMODULATION AND AMPLIFIER 47

5.2.6 SOUND IF AMPLIFIER AND SIF-AGC 47

5.2.7 QUASI-PARALLEL-SOUND (QPS) MIXER 47

5.2.8 STANDARD SWITCH 47

5.2.9 L SWITCH 47

5.2.10 INTERNAL VOLTAGE STABILISER 47

5.3VIDEO / RGB 51

5.3.1 FRONT END 47

5.3.1.1 CVBS Front-End 47

5.3.1.2 Input Selector 48

5.3.1.3 Signal Levels And Gain Control 48

5.3.1.4 Synchronization 48

5.3.1.5 Chroma Decoder 48

5.3.1.6 Luminance Processing 48

5.3.1.7 RGB Front-End 48

5.3.1.8 Signal Processing 48

5.3.1.8.1 Horizontal Prescaler 48

5.3.1.8.2 Noise Reduction 49

5.3.1.8.3 Noise Measurement 49

5.3.1.8.4 Operation Modes 49

CP830F Service Manual

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5.3.1.8.5Digital 656 Output 49

5.3.2BACK END 49

5.3.2.1 Digital Input Interface 49

5.3.2.2 Horizontal Scaler 49

5.3.2.3 Luma Contrast and Brightness 49

5.3.2.4 Black Level Expander/Compressor (BLEC) 49

5.3.2.5 Luma Sharpness Enhancer (LSE) 50

5.3.2.6 Dynamic Peaking 50

5.3.2.7 Luma Transient Improvement (LTI) 50

5.3.2.8 Mixing of Dynamic Peaking and LTI 50

5.3.2.9 Chroma Transient Improvement 50

5.3.2.10 Analog Back End 51

5.3.2.11 Analog RGB Insertion 51

5.3.2.12 CRT Measurement and Control 51

5.3.2.13 Synchronization and Deflection 52

5.3.2.14 EHT Compensation 52

5.4MICROCONTROLLER 52

5.4.1MICROCONTROLLER FEATURES 52

5.4.2ACQUISITION FEATURES 53

5.4.3PORTS 53

5.4.4 -CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE 53

5.4.5TUNING 54

5.4.6AUTOMATIC PICTURE FORMAT SWITCHING 54

5.4.6.1 WSS Data 54

5.4.6.2 SCART Pin 8 Data (Slow Switching) 55

5.4.6.3 Picture Format Description 55

5.4.6.3.1 16:9 CRT 55

5.4.6.3.2 4:3 CRT 56

5.4.7EXTERNAL SOURCE CONTROL LOGIC 57

5.4.8OVER CURRENT PROTECTION 58

5.5TELETEXT DISPLAY 58

5.6SOUND PROCESSING 59

5.6.1ANALOGUE SOUND IF - INPUT SECTION 59

5.6.2QUADRATURE MIXERS 59

5.6.3PHASE AND AM DISCRIMINATION 59

5.6.4NICAM DECODER 60

5.6.5DSP SECTION 60

5.6.6SOUND MODE SWITCHING 60

5.7SOUND AMPLIFICATION 60

5.7.1POWER AMPLIFIER 60

5.7.2MODE SELECTION 60

5.8VERTICAL DEFLECTION 61

5.8.1FLYBACK VOLTAGE 61

5.8.2PROTECTION 61

5.8.3GUARD CIRCUIT 61

5.8.4DAMPING RESISTOR 61

5.8.5EAST-WEST AMPLIFIER (TDA8358J ONLY) 61

5.9POWER SUPPLY (STR F6654) 61

5.9.1STR-F6654 GENERAL DESCRIPTION 61

CP830F Service Manual

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5.9.2POWER SUPPLY PRIMARY PART OPERATIONS 61

5.9.2.1 Start -up Circuit: VIN 62

5.9.2.2 STR-F6654 Oscillating Operation 63

5.9.2.3 STR-F6654 Protection Circuits 64

5.10 TV START-UP, TV NORMAL RUN AND STAND BY MODE OPERATIONS 65

5.10.1 TV START-UP OPERATIONS 65

5.10.1.1 Schematic Diagram For Start-Up Operations 65

5.10.1.2 TV Start-Up And Microcontroller Initialisation 65

5.10.2 TV NORMAL RUN AND STAND-BY MODE OPERATIONS 67

5.10.2.1 TV On Normal Run Mode 67

5.10.2.2 TV Set On Stand-By Mode 70

6 SERVICE PARTS LIST 72

6.1 DTH-29U7ZL 72

7 EXPLODED VIEW 88

7.1 DTH-29U7 88

8 PRINTED CIRCULT BOARD 93

8.1 MAIN PCB 93

8.2 CRT PCB 94

8.3 PFC PCB 95

9 SCHEMATIC DIAGRAM 96

CP830F Service Manual

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DOCUMENT HISTORY

VERSION DATE COMMENTS

V1.00 18/11/02 Creation of document (Author M Hearn) for project CP830 100Hz TV.

V1.01 22/11/02 Reformatting of the document, plus insertion of Document History section

1 MAIN FEATURES

1.1 SPECIFICATIONS

1.1.1 GENERAL

TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L

Colour system Tuner PAL, SECAM

AV PAL, SECAM, PAL 60, NTSC M, NTSC 4.43

Sound system NICAM B/G, I, D/K, L,

FM 2Carrier B/G, D/K

Power 29"(4:3) Real Flat :84W approx.

consumption

Sound Output Power 7W x 2 (at 60% mod, 10%THD)

Speaker 12W 8 ohm x2

Teletext system 9 pages memory FASTEXT (FLOF or TOP)

Aerial input 75 ohm unbalanced

Channel coverage Off-air channels, S-cable channels and hyperband

Tuning system frequency synthesiser tuning system

Visual screen size

29" : 68cm

Channel indication On Screen Display

Program Selection 100 programmes

Aux. terminal EURO-SCART 1 : Audio / Video In and Out, R/G/B

In, Slow and Fast switching.

EURO-SCART 2 : Audio / Video In and Out, SVHS In.

AV3 : Audio-Video Jack on front of cabinet.

Headphone jack (3.5 mm) on front of cabinet

SVHS3 (option) : Jack on front of cabinet ? sound

input common with AV3.

Remote Control R-46G22

Unit

1.1.2 EURO-SCART 1 (21 Pin)

Pin Signal Description Matching value

1 Audio Output Right 0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )

2 Audio Input Right 0.5 Vrms, Impedance > 10 k

3 Audio Output Left 0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )

4 Audio Earth

5 Blue Earth

6 Audio Input Left 0.5 Vrms, Impedance > 10 k

7 Blue Input 0.7 Vpp 0.1V, Impedance 75

CP830F Service Manual

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1.1.3 EURO-SCART 2 (21 Pin)

9 Green Earth

10 N.C.

11 Green Input 0.7 Vpp 0.1V, Impedance 75

12 N.C.

13 Red Earth

14 Blanking Earth

15 Red Input 0.7 Vpp 0.1V, Impedance 75

16 Fast Switching 0 to 0.4V : Logic 0, 1 to 3V : Logic 1, Impedance 75

17 Video Out Earth

18 Video In Earth

19 Video Output 1 Vpp 3dB, Impedance 75

20 Video Input 1 Vpp 3dB, Impedance 75

21 Common Earth

Pin Signal Description Matching value

1 Audio Output Right 0.5 Vrms, Impedance < 1 k ( RF 54% Mod )

2 Audio Input Right 0.5 Vrms, Impedance > 10 k

3 Audio Output Left 0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )

4 Audio Earth

5 Earth

6 Audio Input Left 0.5 Vrms, Impedance > 10 k

7 N.C.

8 N.C.

9 N.C.

10 N.C.

11 N.C.

12 N.C.

13 Earth

14 Earth

15 Chroma Input 3dB for a luminance signal of 1 Vpp

16 N.C.

17 Earth

18 Video In Earth

19 Video Output 1 Vpp 3dB, Impedance 75 ( Monitor output )

20 Video Input, Y In. 1 Vpp 3dB, Impedance 75

21 Common Earth

13579111315171921

2468101214161820

CP830F Service Manual

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1.2 CHANNEL/FREQUENCY TABLE

CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT

C01 46.25 - 45.75 49.75

C02 48.25 55.75 (L ) 53.75 59.25

C03 55.25 60.5 (L ) 61.75 77.25

C04 62.25 63.75 (L ) 175.25 85.25

C05 175.25 176.00 183.25 93.25

C06 182.25 184.00 191.25 175.25

C07 189.25 192.00 199.25 183.25

C08 196.25 200.00 207.25 191.25

C09 203.25 208.00 215.25 199.25

C10 210.25 216.00 223.25 207.25

C11 217.25 189.25 (LUX) 231.25 215.25

C12 224.25 69.25 (L ) 239.25 223.25

C13 53.75 76.25 (L ) 247.25 -

C14 - 83.25 (L ) 49.75 -

C15 82.25 90.25 57.75 -

C16 - 97.25 65.75 -

C17 183.75 - 77.75 -

C18 192.25 - 85.75 -

C19 201.25 - - -

C20 - - - -

C21 471.25 471.25 471.25 471.25

C22 479.25 479.25 479.25 479.25

C23 487.25 487.25 487.25 487.25

C24 495.25 495.25 495.25 495.25

C25 503.25 503.25 503.25503.25

C26 511.25 511.25 511.25 511.25

C27 519.25 519.25 519.25 519.25

C28 527.25 527.25 527.25 527.25

C29 535.25 535.25 535.25 535.25

C30 543.25 543.25 543.25 543.25

C31 551.25 551.25 551.25 551.25

C32 559.25 559.25 559.25 559.25

C33 567.25 567.25 567.25 567.25

C34 575.25 575.25 575.25 575.25

C35 583.25 583.25 583.25 583.25

C36 591.25 591.25 591.25 591.25

C37 599.25 599.25 599.25 599.25

C38 607.25 607.25 607.25 607.25

C39 615.25 615.25 615.25 615.25

C40 623.25 623.25 623.25 623.25

C41 631.25 631.25 631.25 631.25

C42 639.25 639.25 639.25 639.25

C43 647.25 647.25 647.25 647.25

C44 655.25 655.25 655.25 655.25

C45 663.25 663.25 663.25 663.25

CP830F Service Manual

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CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT

C46 671.25 671.25 671.25 671.25

C47 679.25 679.25 679.25 679.25

C48 687.25 687.25 687.25 687.25

C49 695.25 695.25 695.25 695.25

C50 703.25 703.25 703.25 703.25

C51 711.25 711.25 711.25 711.25

C52 719.25 719.25 719.25 719.25

C53 727.25 727.25 727.25 727.25

C54 735.25 735.25 735.25 735.25

C55 743.25 743.25 743.25 743.25

C56 751.25 751.25 751.25 751.25

C57 759.25 759.25 759.25 759.25

C58 767.25 767.25 767.25 767.25

C59 775.25 775.25 775.25 775.25

C60 783.25 783.25 783.25 783.25

C61 791.25 791.25 791.25 791.25

C62 799.25 799.25 799.25 799.25

C63 807.25 807.25 807.25 807.25

C64 815.25 815.25 815.25 815.25

C65 823.25 823.25 823.25 823.25

C66 831.25 831.25 831.25 831.25

C67 839.25 839.25 839.25 839.25

C68 847.25 847.25 847.25 847.25

C69 855.25 855.25 855.25 855.25

C70 863.25 863.25 863.25 863.25

C71 69.25 - - -

C72 76.25 - - -

C73 83.25 - - -

C74 90.25 - - -

C75 97.25 - - -

C76 59.25 - - -

C77 93.25 - - -

S01 105.25 104.75 103.25 105.25

S02 112.25 116.75 111.25 112.25

S03 119.25 128.75 119.25 119.25

S04 126.25 140.75 127.25 126.25

S05 133.25 152.75 135.25 133.25

S06 140.25 164.75 143.25 140.25

S07 147.25 176.75 151.25 147.25

S08 154.25 188.75 159.25 154.25

S09 161.25 200.75 167.25 161.25

S10 168.25 212.75 - 168.25

S11 231.25 224.75 - 231.25

S12 238.25 236.75 - 238.25

S13 245.25 248.75 255.25 245.25

S14 252.25 260.75 263.25 252.25

S15 259.25 272.75 271.25 259.25

S16 266.25 284.75 279.25 266.25

CP830F Service Manual

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CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT

S17 273.25 296.75 287.25 273.25

S18 280.25 136.00 295.25 280.25

S19 287.25 160.00 303.25 287.25

S20 294.25 - - 294.25

S21 303.25 303.25 - 303.25

S22 311.25 311.25 311.25 311.25

S23 319.25 319.25 319.25 319.25

S24 327.25 327.25 327.25 327.25

S25 335.25 335.25 335.25 335.25

S26 343.25 343.25 343.25 343.25

S27 351.25 351.25 351.25 351.25

S28 359.25 359.25 359.25 359.25

S29 367.25 367.25 367.25 367.25

S30 375.25 375.25 375.25 375.25

S31 383.25 383.25 383.25 383.25

S32 391.25 391.25 391.25 391.25

S33 399.25 399.25 399.25 399.25

S34 407.25 407.25 407.25 407.25

S35 415.25 415.25 415.25 415.25

S36 423.25 423.25 423.25 423.25

S37 431.25 431.25 431.25 431.25

S38 439.25 439.25 439.25 439.25

S39 447.25 447.25 447.25 447.25

S40 455.25 455.25 455.25 455.25

S41 463.25 463.25 463.25 463.25

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