Daewoo DTK-28 Series Bedienungsanleitung

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

-1-

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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CP-850/F Service Manual

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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 :110W approx.

consumption 28"(16:9) Real Flat : 110W approx.

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 28" : 66cm

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-49C05

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

CP-850/F Service Manual

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1.2

CHANNEL/FREQUENCY TABLE

1.2.1

CHANNEL/FREQUENCY TABLE

CP-850/F Service Manual

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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 4 79.25 479.25

C23 487.25 487.25 487.25 487.25

C24 495.25 495.25 495.25 495.25

C25 503.25 503.25 503.25 503.25

C26 511.25 511.25 5 11.25 511.25

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

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

CP-850/F Service Manual

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CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT

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

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

CP-850/F Service Manual

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1.3 ATSS SORTING METHOD

The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling software for each

program checks if a VPS CNI code is transmitted (this system exists for German, Swiss and Austrian transmissions).

If no VPS CNI code is found, then the system checks if a CNI code is transmitted as part of the teletext transmission

( Packet 8/30 format 1 and format 2). If such a code ( VPS or teletext ) is found and if this code is in the ATSS list, the

program is automatically named.

If the transmission does not have VPS CNI, and no teletext service is available, then there is no possibility of the

program being automatically named.

The programs found are then sorted in 4 groups :

Group I : It contains all the programs from the selected country and named by the TV controlling software. Within this

group the sorting order is fixed by the ATSS list.

Group II : It contains all the programs with a strong signal strength which are not listed in group I.

Group III : It contains all the programs with a weak signal strength which are not listed in group I.

Group IV : If two or more programs with the same code are found, only the strongest ( or if they have the same level

the one with the lowest frequency) is listed in group I, II or III. The others are listed in group IV.

1.3.1 GENERAL CASE 1.3.2 SPECIAL CASE

Program Group Skip

number

... Group II

m+1

... Group III

p+1

... Group IV

q+1

... not used

Special case : Country selection = Others

Program Group Skip

number

2 Group I

...

n+1

... Group II

m+1

... Group III

p+1

... Group IV

q+1

... not used

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