KV-PF21M70/TF21M61/TF21M90/TF21P11

RM-952

TABLE OF CONTENTS

Section

Title

Page

Section

 

Title

Page

 

 

 

 

 

 

 

 

 

 

 

SELF DIAGNOSIS FUNCTION

3

1. GENERAL

8

2. DISASSEMBLY

 

2-1.

Rear Cover Removal

32

2-2.

Chassis Assy Removal

32

2-3.

F Bracket Removal

32

2-4.

Service Position

33

2-5.

Replacement of Parts

33

 

2-5-1. Replacement of Control Button

33

 

2-5-2. Replacement of Bar Control

33

2-6.

Terminal Bracket Removal

33

2-7.

Degauss Coil Removal

34

2-8.

Picture Tube Removal

34

3. SET-UP ADJUSTMENTS

 

3-1.

Beam Landing

36

3-2.

Convergence

37

3-3.

Focus Adjustment

39

3-4. G2 (Screen) and White Balance Adjustments

39

4. CIRCUIT ADJUSTMENTS

 

4-1.

Adjustments with Commander

40

4-2.

Adjustment Method

41

4-3.

Picture Quality Adjustments

46

4-4. A Board Adjustment After IC003 (Memory)

 

 

Replacement

46

4-5.

Picture Distortion Adjustment

47

5. DIAGRAMS

5-1

Block Diagram

59

5-2

Frame Schematic Diagram

62

5-3

Circuit Boards Location

64

5-4

Schematic Diagrams and Printed Wiring Boards ...

65

(1)

Schematic Diagram of A(1/2) Board

67

(2)

Scheamtic Diagram of A(2/2) Board

71

(3)

Schematic Diagrams of C3 and C5 Boards

79

(4)

Schematic Diagram of V1 Board

85

(5)

Schematic Diagram of F Board

87

5-5

Semicondutors

90

6.

EXPLODED VIEWS

 

 

6-1.

Chassis (KV-PF21M70)

93

 

6-2

Chassis (KV-TF21M61/TF21M90/TF21P11)

95

7.

ELECTRICAL PARTS LIST

97

– 3 –

Page 3
Image 3
Sony KV-TF21P11 Table of Contents, Disassembly, SET-UP Adjustments, Circuit Adjustments, Diagrams, Exploded Views

KV-PF21M70, KV-TF21P11, KV-TF21M61 specifications

The Sony KV-TF21M61, KV-TF21P11, and KV-PF21M70 are iconic television models that hold a significant place in the history of consumer electronics. These CRT (cathode-ray tube) televisions were introduced during a time when home entertainment was evolving, showcasing Sony's dedication to delivering high-quality viewing experiences.

The KV-TF21M61 is known for its compact design and impressive image quality, featuring a 21-inch screen size that was perfect for small to medium-sized rooms. Equipped with Sony's advanced Trinitron technology, it delivers vibrant colors and sharp images, making it a favorite among viewers who appreciate clarity and detail. The television features a built-in tuner, allowing users to easily access various TV channels without the need for an external set-top box. The design includes multiple connectivity options, including standard composite inputs, offering versatility for connecting gaming consoles and DVD players.

Similarly, the KV-TF21P11 model carries forward Sony's commitment to exceptional picture quality. With anti-glare screens and enhanced viewing angles, this model ensures that viewers enjoy clear images from different positions in the room. Its user-friendly interface allows easy navigation through channel selections and picture adjustments. The model also includes stereo speakers, providing a richer audio experience that complements the stunning visuals.

On the other hand, the KV-PF21M70 is seen as an evolution of these models, featuring a larger display while retaining the core technological advancements of its predecessors. This unit incorporates Sony's Picture-in-Picture (PiP) feature, allowing users to watch two channels simultaneously or view external input while keeping an eye on live TV. This functionality enhances versatility and user engagement, making it a practical choice for avid viewers who don’t want to miss out on their favorite programs.

All three models are equipped with various sound enhancement features, including bass and treble controls, ensuring users can tailor their audio experience according to their preferences. The robust build quality and reliability typical of Sony products ensure that these televisions remain cherished items even as technology progresses and newer formats emerge.

Overall, the KV-TF21M61, KV-TF21P11, and KV-PF21M70 are more than just old CRT televisions; they represent a significant era in television technology, characterized by brilliant visuals, sound quality, and functional designs that laid the groundwork for modern home entertainment systems. These models remain a testament to Sony's pioneering efforts in the realm of consumer electronics.