A BOARD SCHEMATIC DIAGRAM

A BOARD WAVEFORMS

1

2

3

4

1.0 Vp-p (H)

2.0 Vp-p (H)

4.7 Vp-p (H)

3.6 Vp-p (8MHz)

5

6

7

8

1.0 Vp-p (H)

0.7 Vp-p (H)

0.9 Vp-p (H)

4.0 Vp-p (V)

9

10

11

12

2.0 Vp-p (H)

0.9 Vp-p (H)

1.7 Vp-p (H)

1.4 Vp-p (V)

13

14

15

16

1.4 Vp-p (V)

5.5 Vp-p (H)

5.3 Vp-p (H)

3.8 Vp-p (H)

17

18

19

20

3.1 Vp-p (H)

3.1 Vp-p (H)

1.3 Vp-p (H)

0.7 Vp-p (H)

 

 

 

 

21

22

23

24

 

1.2

Vp-p (H)

2.5 Vp-p (H)

182.8 Vp-p (H)

23.4 Vp-p (H)

 

 

 

 

 

 

 

 

 

25

 

26

27

28

 

 

1.08

KVp-p (H)

30.4 Vp-p (H)

54.3 Vp-p (V)

31.1 Vp-p (V)

 

 

 

 

 

 

 

 

 

29

 

30

 

 

 

 

2.4 Vp-p (V)

112.5 Vp-p (H)

 

 

 

A BOARD IC VOLTAGE LIST

KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M

A BOARD IC VOLTAGE LIST

IC001

 

IC002

 

8

4.2

 

18

3.5

 

23

5.1

 

6

10.2

 

pin

volt

 

pin

volt

 

9

5.1

 

19

3.1

 

24

0.0

 

7

0.1

 

1

0.6

 

1

7.1

 

10

4.2

 

20

2.5

 

25

1.1

 

8

13.8

 

2

4.8

 

2

GND

 

11

NC

 

21

1.6

 

26

0.0

 

IC541

 

3

0.0

 

3

5.4

 

12

GND

 

22

1.8

 

27

2.5

 

pin

volt

 

4

0.0

 

4

GND

 

13

4.9

 

23

1.8

 

28

5.1

 

1

1.6

 

5

4.8

 

5

GND

 

14

4.3

 

24

1.8

 

29

2.3

 

2

13.8

 

6

0.0

 

6

4.9

 

15

4.3

 

25

NC

 

30

2.3

 

3

-13.4

 

7

0.0

 

7

GND

 

16

4.3

 

26

NC

 

IC401

 

4

-15.3

 

8

0.2

 

8

4.9

 

17

GND

 

27

NC

 

pin

volt

 

5

0.0

 

9

0.0

 

IC003

 

18

GND

 

28

NC

 

1

0.7

 

6

14.6

 

10

NC

 

pin

volt

 

19

4.9

 

29

0.0

 

2

NC

 

7

1.6

 

11

NC

 

1

GND

 

20

4.9

 

30

4.6

 

3

2.3

 

IC601

 

12

3.3

 

2

GND

 

21

GND

 

31

4.6

 

4

14.3

 

pin

volt

 

13

0.0

 

3

GND

 

22

NC

 

32

4.6

 

5

2.3

 

1

1.8

 

14

4.9

 

4

GND

 

23

5.0

 

33

8.9

 

6

GND

 

2

0.2

 

15

0.0

 

5

4.9

 

24

NC

 

34

4.9

 

7

0.3

 

3

151.7

 

16

0.0

 

6

4.9

 

25

4.2

 

35

4.9

 

8

6.9

 

4

17.3

 

17

-0.3

 

7

GND

 

26

4.2

 

36

0.0

 

9

GND

 

5

GND

 

18

4.9

 

8

4.9

 

27

5.0

 

37

4.4

 

10

6.9

 

IC602

 

19

4.9

 

IC004

 

28

NC

 

38

5.2

 

11

6.9

 

pin

volt

 

20

1.8

 

pin

volt

 

29

NC

 

39

5.2

 

12

GND

 

1

135

 

21

0.0

 

1

2.9

 

30

GND

 

40

GND

 

13

6.9

 

2

121

 

22

2.2

 

2

4.9

 

31

NC

 

41

NC

 

IC402

 

3

GND

 

23

GND

 

3

GND

 

32

4.2

 

42

8.9

 

pin

volt

 

IC604

 

24

2.3

 

IC010

 

33

4.2

 

43

5.2

 

1

4.4

 

pin

volt

 

25

2.3

 

pin

volt

 

34

5.0

 

44

9.0

 

2

GND

 

IN

11.7

 

26

GND

 

1

0.0

 

35

0.0

 

45

4.9

 

3

4.4

 

OUT

9.0

 

27

4.9

 

2

0.5

 

36

4.3

 

46

4.7

 

4

4.4

 

GND

GND

 

28

0.0

 

3

0.0

 

37

NC

 

47

1.9

 

5

4.4

 

All voltages are in V

29

0.0

 

4

GND

 

38

9.0

 

48

NC

 

6

4.4

 

 

 

 

 

 

 

 

 

30

4.9

 

5

NC

 

39

NC

 

IC302

 

7

4.4

 

 

 

 

31

4.9

 

6

9.0

 

40

4.2

 

1

5.1

 

8

4.4

 

 

 

 

32

2.8

 

7

0.0

 

41

5.1

 

2

0.0

 

9

4.4

 

 

 

 

33

4.9

 

8

GND

 

42

4.2

 

3

0.0

 

10

1.5

 

 

 

 

34

2.5

 

IC202

 

IC301

 

4

NC

 

11

4.9

 

 

 

 

35

NC

 

pin

volt

 

pin

volt

 

5

1.2

 

12

4.9

 

 

 

 

36

4.9

 

1

7.6

 

1

3.4

 

6

0.0

 

13

5.6

 

 

 

 

37

4.9

 

2

7.6

 

2

5.1

 

7

5.1

 

14

4.4

 

 

 

 

38

4.9

 

3

7.6

 

3

4.3

 

8

1.1

 

15

4.4

 

 

 

 

39

4.9

 

4

GND

 

4

5.1

 

9

5.1

 

16

4.4

 

 

 

 

40

0.5

 

5

7.6

 

5

4.8

 

10

0.7

 

17

4.4

 

 

 

 

41

0.0

 

6

7.6

 

6

4.4

 

11

0.0

 

18

4.4

 

 

 

 

42

0.0

 

7

7.6

 

7

2.2

 

12

2.0

 

19

4.4

 

 

 

 

43

4.9

 

8

15.3

 

8

4.9

 

13

2.8

 

20

4.4

 

 

 

 

44

0.1

 

IC203

 

9

5.1

 

14

1.0

 

21

9.0

 

 

 

 

45

NC

 

pin

volt

 

10

GND

 

15

2.2

 

22

4.4

 

 

 

 

46

4.9

 

1

4.9

 

11

4.3

 

16

0.0

 

IC521

 

 

 

 

47

0.0

 

2

4.2

 

12

2.4

 

17

0.0

 

pin

volt

 

 

 

 

48

0.0

 

3

4.9

 

13

3.5

 

18

0

 

1

0.1

 

 

 

 

49

0.0

 

4

4.2

 

14

3.5

 

19

0

 

2

3.8

 

 

 

 

50

0.0

 

5

4.9

 

15

5.7

 

20

NC

 

3

2.5

 

 

 

 

51

0.0

 

6

6.1

 

16

7.6

 

21

0

 

4

GND

 

 

 

 

52

0.0

 

7

4.9

 

17

0.7

 

22

5.1

 

5

9.1

 

 

 

 

 

B

C

E

Q001

4.3

4.8

4.9

Q080

0.0

3.9

GND

Q082

0.2

4.6

GND

Q083

0.0

0.6

GND

Q101

0.0

4.6

GND

Q170

4.4

9.0

0.0

Q200

0.0

0.0

GND

Q201

0.6

0.0

GND

Q203

2.4

GND

0.7

Q280

5.2

GND

5.9

Q281

4.1

GND

4.7

Q282

4.1

GND

4.7

Q283

0.0

5.9

GND

Q284

0.6

0.0

GND

Q285

0.6

0.0

GND

Q286

4.4

GND

4.9

Q287

5.0

GND

5.7

Q288

7.3

9.0

6.7

Q300

0.2

3.5

GND

Q302

4.4

9.0

3.8

Q305

3.8

GND

4.4

Q306

1.7

GND

2.4

Q307

1.8

GND

2.4

Q308

1.8

GND

2.4

Q309

3.6

1.6

3.8

Q310

3.6

GND

3.8

Q349

5.2

9.0

4.6

Q350

0.7

GND

1.4

 

B

C

E

Q351

1.4

8.3

0.8

Q352

8.3

1.2

8.9

Q353

1.2

GND

1.8

Q354

1.1

GND

1.7

Q355

1.7

8.2

1.1

Q356

8.2

1.5

8.8

Q357

1.5

GND

2.2

Q358

5.9

9.0

5.2

Q359

3.8

GND

4.4

Q360

4.7

GND

5.3

Q361

1.3

5.1

1.2

Q390

5.0

9.0

4.4

Q391

0.0

5.0

GND

Q501

-0.1

97.3

GND

Q521

0.1

4.2

GND

Q522

0.4

11.2

GND

Q550

0.7

0.1

GND

Q555

2.1

4.0

1.5

Q571

134.0

0.8

134.6

Q601

-0.1

0.2

0.0

Q602

0.0

17.0

0.0

Q603

17.0

2.9

17.3

Q604

0.1

3.9

GND

Q607

0.7

0.1

GND

Q610

0.0

0.7

GND

Q630

0.0

135.0

GND

Q650

5.7

9.0

5.1

All voltages are in V

 

— 31 —

— 32 —

— 33 —

857 3 A Board Schem.p65

1

 

3/26/99, 2:30 PM

— 34 —

Page 26
Image 26
Sony KV-27S42 service manual Board Schematic Diagram Board Waveforms, Board IC Voltage List

KV-27S42 specifications

The Sony KV-27S42, KV-27S66, and KV-27S46 are notable models within Sony's acclaimed line of Trinitron televisions, which contributed significantly to the brand's reputation for delivering high-quality viewing experiences. These models are characterized by their sturdy construction, vibrant picture quality, and user-friendly features, which made them popular among consumers during their release.

The KV-27S42 model is equipped with Sony's advanced Trinitron technology, offering a flat CRT screen that minimizes glare and enhances color accuracy. With a 27-inch display size, the KV-27S42 is designed to provide an immersive viewing experience without occupying excessive space in the living room. This model also features a variety of input options including composite, S-video, and RF inputs, allowing users to connect multiple devices such as VCRs, DVD players, and gaming consoles effortlessly.

The KV-27S66 model builds upon the strengths of its predecessor with enhancements in audio and video technologies. It features a built-in 2-channel sound system that delivers clear and dynamic audio, complementing the stunning visuals produced by the Trinitron display. The KV-27S66 also includes a digital comb filter, which improves picture sharpness by separating the brightness and color signals, resulting in reduced artifacts and enhanced clarity.

Meanwhile, the KV-27S46 incorporates some of the latest technologies of its time, such as the use of Super Fine Pitch Trinitron technology. This innovation enhances the display's resolution, offering finer detail and more precise color reproduction. The KV-27S46 also supports multiple viewing formats, making it suitable for various video sources, including standard cable and DVDs.

Each of these models is designed with an intuitive on-screen menu that simplifies the navigation of settings, making it easy for users to adjust picture and sound settings to their preferences. Remote control functionality further enhances the user experience, allowing for effortless operation from a distance.

In summary, the Sony KV-27S42, KV-27S66, and KV-27S46 televisions stand out for their historical significance in delivering quality display and audio technologies. With various features that cater to home entertainment needs, these televisions remain a testament to Sony's lasting legacy in the consumer electronics market. While these models may not compete with today's flat-screen technology, they were pioneering products that set the stage for future innovations in television design and performance.