background image

R517
220

C506

470P

R513

2K7

D501

IN4148

D502

IN4148

D503

IN4148

R512
220

R511
220

C507

470P

C508

470P

R514

2K7

R515

2K7

R504

1K

R507

82K

R508

82K

R505

1K

R509

82K

R506

1K

R503

1K2

R502

1K2

R501

1K2

R521

82

D505

IS4148

C510

0.01/500V

C504

10u

R516

4.7K

R518

4.7K

R519
47K

R520
10K

C509

Q802

D2539/2SC5296

T801

 

R801A

1R1/2W

D801
1N4937

C801 220P/500V

C802
10U/250V

+180V

HEAT

1 R336

470 

C601A

0.22u/250V

T601

C602

0.22U/250V

 

 

S600

 

 

 

 

 

T602

RT601

MZ72-18

L801

C105

10n

C104
10n

R028

1

K

R027

1

K

R026

1

K

R025

2

K

7

R139

2.2K

C138

4700P

C137

0.1u

R136

27K

C119

0.1u

C133

470u

R131
470

R132

470

R133

470

R135
1K

C141

0.1u

R144

56K

L113

10UH

C143

4n7

R137

15K

C142

2.2u

trf1062

L101

 

C135

1u

C103

0.1u

C118
1u

R121

150

C134

10n

C132

470u

C109

 1u

SAW102

 

D634

RU4YX

C634

390P

C653

100UF

D650

 3V9

C662

470UF/16V

Q001

1815

R012

33K

R001
33K

C031
47PF

C001
0.1u

X001

4M

C014

39PF

C015
39PF

R034

1K

R033

1K

R031

1K

R029

1K

C013 22P

C023

2n2

Q801

2SC2482

C816
330P/500V

HD

R049
5.1K

R037

39K

R002
10K

D108

1N4148

SC

 

 

R116

100

R003

33K

C002
0.1u

R021
15K

R018
5.6K

R019
6.8K

C318

0.1u

R004

33K

R629

8.2M/1W

C629

2200P/400V

 

2200p/1K6V

R145

8.2K

D107

1N4148

R138
2.2K

CT

 

Q501
 A1015

V501

 Ro

 

 Go

 

 Bo

 

 +12V

 

 GND

 

XP504

C812

1000u

 

2 R804

3R3

HV

FV

SV

C807

0.039U/63V

D805

1N4937

R802

1R/0.5W

C805

220P/500V

T802

A48QA220X

CTV2811N-JL TXT/NICAM SCHEMATIC DIAGRAM 

CRT BOARD

HD

BCLP

CT

Ro

Go

Bo

SC

VS

8V

OSD B

OSD G

OSD R

SDA

SCL

C011
0.1u

C810

220P/2KV

XS601

XS600

R517

4.7K

C605

C606

C607

 220u/400V

D606

 

2

R625
 6.8

R617
1K

D619

MTZ11C

D616
1S1555

D605

R611
5K6

R615
22K

C603

 

2

R624

39

D603

D604

R626

2K2

C615

0.01

C616

1000/2KV

3

4

2

1

N615

TLP621

R623
2K7

T611

 

R653
10K

R670A

22/5W

+140V

C645

2200u/25V

D635

RU4YX C635

1000u/35V

Q682

C1815

R655
2K2

C637

 470P

ON/OFF

3

11

4

6

1

14

13

15

7

9

10

12

5

2

IC501

STV5112

C301

100n

C302

330n

C306

100u/35V

D302

1N4004

R311

220K

R312
100K

R324

68K

R313

15K

C314

2200u

C312

1n

R320
2.2K

R314
10K

R335
100

R322

100

SCL

SDA

VS

BCLV

C843

5n6/1600V

C842

8n2/1600V

C811

27n/400V

 D803
 1N4937

D802
RS3FS

C309

4.7UF/160V

L803

 

C809

0.27U/400V

C839

1U/250V

D813

FR104

1

R843
10K

L804

35UH

SCL

CRAMP

SDA

CHOLD

SYNC

VCC

FLYBACK

GND

OUT

VOPS

EWOUT

SENS2

EWSENS

SENS1

BREATH

IC301
STV9306

SCL

SDA

+8V

5V(A)

C442

1u

C437

1u

C443

1u

C436

1u

CQ11
10n

CQ10

10u

CQ09

10n

CQ08

220n

CQ07

10p

CQ06

10u

CQ01

10n

CQ03

1n

CQ02

10u

CQ04

1u

CQ05

1u

CQ16

10p

CQ18

103

CQ13

10u

CQ17

10p

RQ03

220K

RQ04

20k

XQ01 27M

QQ01

1015

CQ15

100n

 
 

 
 

 XS803

 

 
 

8

7

4

6

2

10

1

SIF 

VIN3

C128

0.1u

C127

0.1u

C126

0.1u

C659

1UF/50V

C685

1UF

RESET

+5V

+5VA

 

8OHM/8W

 

8OHM/8W

C3417

1000UF/35V

MUTE

+26V

R123

1K

R124

1K

LQ01

10uH

C034

10u

X102

 4.43M

CQ12

56p

CQ19

47P

C319

22n

D810

IN4148

L801

 4.7UH

1

R814

1K

R426

100

R429

100

C434
100UF

C3408

2200P

C3421

2200P

R315 15K

CQ20

10u

R610

0.33/1W

D631

RU4AM

C631

 470P

C641

100UF/160V

C604

 

24V

R329

4.7/2W

CVBS OUT1

C122
1u

C117

1u

C123

10u

C108

1n

C106

0.33u

CF102

6.5M

L103

8.2uH

CF103

5.5M

VIN2

VIN3

R3430

10K

Q3404

C1815

R3420

680

C129
0.1u

SAW101 

R008
4.7K

CVBS OUT2

SIF 

AGC

8V

 

5V(A)

C121

47u

SCL

SDA

R074
470

R009
4.7K

L401
10UH

 

RQ02

39

RQ08

100

RQ07

100

C139

10n

C131

470u

R128
330K

C125 1u

R119

220

 

 

Q464
A1015

D462

1N4148

D465
1N4148

C486

470u

R484

22K

R090

22K

R331

10

C3411

100n

R3414

4R7

R3417

3K3

R3415

4R7

R3413
3K3

R3416

100

 R3412
100

C3409

3.3UF

C3407

3.3UF

C3416
470UF

C3415

470UF

C3413

100n

5

1

6

2

10

4

8

9

3

IC3401

TDA7263M

C3419

100UF/35V

R3411

1K

R3409 1K

 

 

 

 

 

 

 

R302 100

R301 100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C661

100UF/16V

 

 

 

 

 

 

 

 

 

 

 

 

 

R073
270

R075
680

R072
120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

BOUT

GOUT

ROUT

Icath

BOSD

GOSD

ROSD

FBOSD

XTAL3/BTUN

XTAL2

XTAL1

CLPF

X1/VAMP/CHROUT

GND1

CVBSOUT1

Vcc1

BCL/SAF

VERT

HOUT

LFB/SSC

SLPF

SCL

SDA

Vcc  D

GND D

AUDIOOUT

FMCAP

CVBSIN2

Vcc2

NC

PIFLC2

FBEXT

NC

Y/CVBSIN3

NC

APR

BS

CHR

CVBSIN1

GND2

PIFLC1

EXTAUDIO

INTCVBSOUT

VccIF

AM/FMOUT

GND IF

IFPLL

TUNERAGCOUT

PIFIN2

PIFIN1

AGCPIFCAP

Vref IF

AGCSIFCAP

SIFIN2

SIFIN1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

IC003
STV2246C/48C

 

 

 

+5VA

 

 

 

R011
5.6K

R015

100

R079

4.7K

C008

0.1u

 

R014

100

C433

2.2u

C432

2.2u

R422

5.6K

R423

5.6K

R424

2.7K

C431

18n

C429

100n

C425

22n

C424

100n

C423

100n

C428

100n

C427

18n

C426

5.6n

C422

22n

C421

5.6n

R421

2.7K

C435

10u

RIN1

RIN2

LIN1

LIN2

C444
4.7uF

C439

4.7uF

C3406

0.1u

C3420

0.1u

 

 

 

 

 

C003 4n7

C012

0.1u

C005 220n

C004

220P

OSD B

OSD G

OSD R

OSD FB

SDA

SCL

C021 82P

C019

470n

C036
22P

R039

5K6

C035

4n7

C022

104

C033
0.1u

 

 

 

 

 

 

 

 

 

 

+5V

+5V

OUT

GND

VCC

IC011

C040

0.1u

 

+5V

CVBS OUT2

VS-1

SC

VT

33V

 

 

 

 

SW6

P+

SW5

P-

SW4

V+

SW3

V-

R071

1K

 

D311

32V/1w

 

C146

4.7u/50V

 

C107

10n

 

R134

47k

 

 

R810A

1R/2W

R146

2.2K

R640
15K/2W

 

R650
10K

 

 

 

 

 

 

R807
1K

 

 

 

 

 

R323

0.68R

 

 

 

 

 

L001

10UH

L002

10UH

C124

0.022u

 

RQ05

560

 

 

C154
 1u

 

R143
2.2K

 

 

C401

1u

C402

1u

R402

75

 

R401

75

 

L112

10UH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R453

22K

R452

22K

R041

10

R043

10

VS-1

LQ06

10UH

 

R149

10K

D808 1N4004

L111

10UH

L110

10UH

+5V

+5V

+140V

R142

10K

R147
100

R148
100

Q611

1015

Q613

2SC4429/5299

D617

ES1

D614
1N4148

C614

0.1u

R619

47

R620
120K

R620A

120K

R622
15K

Q612

2SC3807

R602

3R9/5W

C613
4700P

C603-606

1000P/1KV

D603-606

ERC05-10B

2

1

3

IC604

7805

C658
0.1u

C671

0.1u

R638
68K

R639
22K

R635
150K

R636
6K8

VR631

2K

Q631

C1815

Q685
C1815

Q686

A1015

D685

6V2

D641
6V2

R688

10K

R689

22K

R687
560K

R686
150K

D626

33V

Q652

2SA1015Y

C650

10UF/16V

33V

+12V

C801A
100P/50V

C801B

330P/500V

C808

0.1U/250V

R808

8K2/2W

R809

8K2/2W

R817

1K5

R813
100

L819

0.2UH

L818

0.6UH

 

 

9

L802A
100UH

C809A

0.027U/400V

C807A

56P

D013

1N4148

+5V

3

OSD FB

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

RO

LO

RI

LI

SW

BI

VI

VO

FBI

GI

RI

SCART1

 

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

RO

LO

RI

LI

SW

BI

VI

VO

FBI

GI

RI

SCART2

 

C3418

0.01u

R450

22K

R451
22K

R455

22K

R454
22K

R434
560

R433
560

R408
560

R405

1K

R406
68

R407

68

Q402 C1815

 

 

 

 

+9V

RO

LO

+12V

C145

4.7U

 

D134

1N4148

BCLP

C813
0.1u

 

R310
22K

BCLV

CQ24

10n

 

 

CQ14

10n

VCC

BH

BL

AGC

VT

BU

IF

8

3

1

5

4

6

7

2

9

10

11

TU201

 

Q206

2SA1015Y

Q204

2SA1015Y

Q205

2SA1015Y

D209

1N4148

D210

1N4148

D211

1N4148

R231 5K6

R232

5K6

R233

10K

R237

10K

R234

10K

R255
4K7

L202

10UH

C239

0.1u

C240
10u

C236
10u

C238
10u

C235

47u

VT

AGC

 

 

 

 

 

 

BSW2

BSW1

D004

1N4148

SDA

SCL

R060

6K8

R007

4K7

S-SW1

R005

4K7

R036

6K8

ON/OFF

SAW2

SAW1

BSW2

BSW1

+5V

180V

 

HEAT

 

XP501

VO1

VO1

LIN2

RIN2

 

 

VIN2

LIN1

RIN1

+26V

D461

1N4148

D463 1N4148

R3431

47K

+5V

+8V

MUTE

 

 

 

 

 

 

R102

4K7

R101

27K

C111

22u

 

 

C151

0.1u

C152

0.1u

C153

0.1u

R153
75

R154
75

R155
75

R156

75

FBI

RI

GI

BI

S-SW1

FBI

RI

GI

BI

 

 

 

 

 

 

 

 

 

R015A

1K

R015

1K

D001A

HFT505M

GREEN

RED

CN001/5

CN001/3

 

CN001/4

 

CN001/2

 

CN001/1

 

 

 

+8V

RESET

E0

 

E1

 

E2

 

GND

 

SDA

 

SCL

 

WC

 

VCC

 

IC001

ST24C01

 

 

C009
100uF

 

4

5

3

2

1

3

4

5

1

2

D012

1N4148

+8V

C327
47P

C328
47P

 

 

C812A

100u/160V

R801

1R/2W

+12V

C600A

0.22uF/400V

C617

0.015u

5

8

2

3

9

13

16

17

9

15

C657

0.1u

R637

180K

C654

470UF/16V

2

1

3

IC605

7805

C652

0.1u

C675

470UF/16V

+8V

2

1

3

IC602

7808

C690
0.1u

C674

0.1u

C656

100UF/16V

2

1

3

IC606

7812

C651

0.1u

Q683
B892

R685

10K

 

C655

10UF

R650

1K

Q401

C1815

R404
470

LQ03
10UH

C417

0.1u

C450

1n

C451

1n

C452

1n

C453

1n

C408
0.1u

C407
10UF

 

R341

10K

+12V

R076

10

C041

10UF

C067

10UF

BL

BH

BU

C233
1n

F601

T3.15Al250V

AC230V

50Hz

XS600A

SP601

 

SP602

 

C3402

0.39u

D3402

4148

D3404

4148

D3401

4148

D3403 4148

C3401

0.39u

C161
18PF

R317

1K

C505
10UF

 

 

VCOIL

HCOIL

 

R129

 68K

CN101

XS804

R808A

8K2/2W

60MA

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

INL

MXOR

INR

MINR

MOR

BIR

BOR

BIL

BOL

MOL

MIL

ROT

LOT

RIN4

RIN3

RIN2

RIN1

LIN1

LIN2

LIN3

LIN4

MXOL

AGND

VS

CRF

SDA

S

C

L

DGND

TRR

TRL

IC401

TDA7439

14

2

22

21

11

32

41

40

39

38

37

36

35

34

33

31

23

20

avcc

19

18

17

16

15

cap5

2

3

4

5

6

7

8

9

10

gnd4

12

13

14

30

29

28

27

26

25

24

reset

sd

ws

sck

nc

nc

nc

nc

dcl

alin

arin

cap2

cap1

slout

srout

av5a

alout

arout

xout

srin

slin

xin

nu

cap8

min

sd

a

scl

mout

gnd3

n

c

cap3

av5b

cap6

re

g

dvdd5

sif

cap7

gnd1

gnd2

IC400

STV8203

S-SW2

R016

6K8

 

S-SW2

NOTE: SUBJECT TO CHANGE WITHOUT NOTICE

RQ11

1K

RQ13

1K

CQ26

10UF
CQ27

10UF

RQ10
1K

RQ12 1K

CRITICAL PARTS

CVBS OUT1

R433A

5

6

0

R434A

5

6

0

LO

RO

R020

6K8

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSC

G

B

NC

NC

NC

NC

S1

S-SW1

S-SW2

ON/OFF

NC

MUTE

NC

RESET

IRIN

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

43

44

45

46 

47

48

49

50

51

52

53

54

55

56

S0

 

42

19

20

21

22

23

24

25

26

27

28

41

29

30

31

32

33

34

35

36

37

38

39

40

TXCF

CVBSO

AVDD2

JTMS

WSS

TELETEXT

AGND

GND

JTRETO

PXFM

AVDD1

HSYNC

R

FB

SDA

SCL

VDD

JTDO

WSCF

WSCR

AVDD3

TEST0

MCFM

JTCK

KB INPUT

NC

VT

STDBY LED

STDBY LED

OSC

VOL PWM

VSYNC

NC

SAW-SW2

NC

SAW-SW1

BSW2

BSW1

NC

R23

ST92195PLSH

K9650M

K2955M

Summary of Contents for TV4KF-NICAM/A2/TXT

Page 1: ...TV4KF NICAM A2 TXT SERVICE MANUAL COLOUR TETELEVISION ...

Page 2: ...rce The high voltage must not exceed 29KV 2 Each time a receiver requires servicing the high voltage should be checked following the HIGH VOLTAGE CHECK procedure in this manual It is recommended the reading of the high voltage be recorded as a part of the service record It is important to use an accurate and reliable high voltage meter 3 The primary source of X RAY RADIATION in this TV receiver is...

Page 3: ...trical and mechanical parts in this chassis have special safety related characteristics are often passed unnoticed by a visual inspection and the X RAY RADIATON protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may...

Page 4: ...ing OK key Service 2 is accessed by pressing Enter key again Service 3 and Service 4 is accessed By pressing PP key we come out of Service mode The items within the Service 1 mode can be accessed using UP DOWN keys and the selected item can be varied using LEFT RIGHT keys The parameters controlled in the Service 1 menu are a Red Gain 0 63 b DC Red 0 63 c Green Gain 0 63 d DC Green 0 63 e Blue Gain...

Page 5: ...d adjust VCO Coarse L1 and VCO Fine L1 to get VCO OK Status If the cursor is in VCO Coarse L1 or Fine L1 and the display shows VCO OK status then pressing of MENU key will automatically put VCO fine for L1 to the Centre of the 60 to 60 KHz window When in Service 2 menu if OK key is pressed Service 3 menu appears and the display is as follows The parameters controlled in the Service 3 menu are a V ...

Page 6: ... Mute pin low high to contol the speaker 0 1 b0 TDA7449 TDA7439 0 1 OPTION4 b5 VHF UHF SELECTION 0 VHF UHF 1 UHF b4 SCART2 0 OFF 1 ON b3 RGB 0 OFF 1 ON b2 SVHS 0 OFF 1 ON b1 AV2 0 OFF 1 ON b0 AV1 0 OFF 1 ON OPTION5 please contact ST if you have something not clear here b4 b5 b6 used for the autogain GainDacTable Adoffset ADslope b3 GainDacTable Adoffset ADslope changed permission b1 b2 used for th...

Page 7: ...service command 1 PP exit 2 OK switch between the service menu 3 AV auto VCO adjust 4 MUTE one line gain 5 ANALOG sub brightness adjust The AV2 should not be set while the RGB is set on ...

Page 8: ...1 5 9 6 7 8 ñ ò 2 3 4 ...

Page 9: ...31 18n C429 100n C425 22n C424 100n C423 100n C428 100n C427 18n C426 5 6n C422 22n C421 5 6n R421 2 7K C435 10u RIN1 RIN2 LIN1 LIN2 C444 4 7uF C439 4 7uF C3406 0 1u C3420 0 1u C003 4n7 C012 0 1u C005 220n C004 220P OSD B OSD G OSD R OSD FB SDA SCL C021 82P C019 470n C036 22P R039 5K6 C035 4n7 C022 104 C033 0 1u 5V 5V OUT GND VCC IC011 C040 0 1u 5V CVBS OUT2 VS 1 SC VT 33V SW6 P SW5 P SW4 V SW3 V ...

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