JVC AV-29MXP6/V, AV-25MXP6/V Techninal Information Main MI-COM CPU PIN Function, No.YA4761-5

Page 5

2.3TECHNINAL INFORMATION

2.3.1 MAIN MI-COM (CPU) PIN FUNCTION

Pin

Pin name

I/O

Function

Pin

Pin name

I/O

Function

No.

No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

VssP2

-

GND

65

SVM

O

Not used

2

VssC4

-

GND

66

FbiSo

I

Flyback input/sandcastle output

3

V1.8C4

I

1.8V (Digital)

67

Hout

O

Horizontal output

4

V3.3A3

I

3.3V

68

VssComb

-

GND

5

VrefP_Sdac

I

3.3V (Positive)

69

V5Comb

I

5V

6

VrefN_Sdac

-

GND

70

Vin/R2/Pr

I

PIP R input

7

VrefP_Sdac

I

3.3V (Negative)

71

Uin/B2/Pb

I

PIP B input

8

VrefN_Sdac

-

GND

72

Yin/G2/Y

I

PIP G input

9

VrefP_Sdac

I

3.3V (Positive)

73

Ysync

I

Not used

10

XtalIn

I

24.576MHz for system clock

74

Yout

O

Not used

11

XtalOut

O

24.576MHz for system clock

75

Uout/INSSW2

I

YUV insertion input

12

VssA1

-

GND

76

NC

O

Not used

13

NECK

I

V-guard input/ I/O switch

77

INSSW3

I

YUV insertion input

14

CONT

I

1.8V regulator control

78

R3/Pr

I

Component PR input (Video-2)

15

V5P1

I

+5V

79

G3/Y

I

Component Y input (Video-2)

16

Ph2

-

Phase-2 filter

80

B3/Pb

I

Component PB input (Video-2)

17

Ph1

-

Phase-1 filter

81

Gnd3

-

GND

18

Gnd1

-

GND

82

V5P3

I

5V

19

SecPll

-

SECAM PLL decoupling

83

BCL

I

Beam current limiter input

20

Dec8G

-

Bandgap decoupling

84

BLKIN

I

Black current input

21

EW

O

East-West drive output

85

Rout

O

R output

22

VDRB-

O

Vertical drive B output

86

Gout

O

G output

23

VDRA+

O

Vertical drive A output

87

Bout

O

B output

24

Vif1

I

Video IF input 1

88

V3.3A1

I

3.3V

25

Vif2

I

Video IF input 2

89

RefAdN

-

GND

26

Vsc

-

Vertical sawtooth capacitor

90

V3.3RefAdP

I

3.3V (Positive)

27

Iref

I

Reference current input

91

RefAd

I

3.3/2V

28

GndIF

-

GND

92

GndA

-

GND

29

Sif1

I

Sound IF input 1

93

V1.8A

I

1.8V

30

Sif2

I

Sound IF input 2

94

V3.3A2

I

3.3V

31

AGC

O

Tuner AGC output

95

VssADC

-

GND

32

EHT

I

EHT/overvoltage protection input

96

V1.8ADC

I

1.8V

33

Ssif/RefIn/Avl/

O

Automatic Volume Levelling/ sound IF input / subcar-

97

REMOTE

I

Remote control

 

RefOut

 

rier reference output / external reference signal input

 

 

 

 

 

 

 

for I signalmixer for DVB operation

 

 

 

 

34

L3

I

Audio-L3 input (left signal)

98

PW_LED

I

POWER LED control

35

R3

I

Audio-R3 input (right signal)

99

PW_LED

I

POWER LED control

36

L-OUT

O

Audio L output

100

V1.8C2

I

1.8V

37

R-OUT

O

Audio R output

101

VssC2

-

GND

38

DecsDem

-

Decoupling sound demodulator

102

TIMER

-

Not used

39

QssO/AmO/

O

QSS intercarrier output / AM output / deemphasis /

103

TIMER

-

Not used

 

AudeEm

 

(front-end audio out)

 

 

 

 

40

Gnd2

-

GND

104

VER_PROTECT

O

X-ray protect

41

PllIf

-

IF-PLL loop filter

105

S_REDUCE

O

Sound control

42

SifAgc

-

AGC sound IF

106

P00/I2SDI1

O

Not used

43

IfVo/FmRo/DvbO

O

Not used

107

POWER

O

SUB POWER control

44

NC

O

Not used

108

SCL1

I

I2C bus clock

45

V8AudioSwitches

I

8V

109

SDA1

I/O

I2C bus data

46

AgcSsif

-

AGC capacitor second sound IF

110

V3.3P

I

3.3V

47

V5P2

I

5V

111

ROTATION

O

Rotation

48

V-OUT

O

Video output

112

3.58/OTHER

O

NTSC 3.58 detection

49

L1

I

Audio-L1 input

113

A_MUTE

O

Audio muting

50

R1

I

Audio-R1 input

114

4.5/OTHER

O

NTSC 4.43 detection

51

V3

I

Video V3 input

115

PROT

I

Protect

52

C4

I

Not used

116

ECO_IN

I

ECO sensor level detection

53

Audio2InL

I

Not used

117

V1.8C1

I

1.8V (Digital)

54

Audio2InR

I

Not used

118

DecV1V8

I

1.8V

55

V2/Y

I

Video V2 input

119

KEY_IN

I

Key scan data

56

L2

I

Audio L2 input (Left signal)

120

VDO-DET

I

Video DET input

57

R2

I

Audio R2 input (right signal)

121

VSSC1+P1

-

Digital GND

58

Y3/Cvbs

I

S-Video Y1 input

122

S_V_DET

I

S-Video DET input

59

C1

I

S-Video C1 input

123

P25/PWM4

O

GTVA_reset

60

AudioLsL

O

Audio L output for audio power amplifier

124

V1.8C3

I

1.8V (Digital)

61

AudioLsR

O

Audio R output for audio power amplifier

125

VssC3

-

GND

62

HP-L

O

Not used

126

P12/Int2

I

External interrupt

63

HP-R

O

Not used

127

SDA0

I/O

I2C bus data (for memory)

64

CVBSO/PIP

O

CVBS / PIP output

128

SCL0

I

I2C bus clock (for memory)

(No.YA476)1-5

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Contents AV-29MXP6/V AV-21MXP6/V AV-25MXP6/V AV-29MXP6/V Items ContentsLeakage Current Check Safety PrecautionsAlternate Check Method No.YA4761-3Auto Signal Detect Features DVD Picture ModePicture Mode Cinema SurroundNo.YA4761-5 Techninal Information Main MI-COM CPU PIN FunctionWire Clamping and Cable Tying Disassembly Procedure AV-21MXP6/V Removing the Rear CoverRemoving the Main PW Board Removing the SpeakerNo.YA4761-7 AV-21MXP6/XDisassembly Procedure AV-25MXP6/V Removing the Rear Cover No.YA4761-9 AV-25MXP6/VRemoving the Chassis Chassis Base and Control Base Disassembly Procedure AV-29MXP6/V Removing the Rear CoverRemoving the AV Terminal Board Remove the Rear Cover Remove the 4 screws C as shownNo.YA4761-11 Front SideMenu Memory IC ReplacementSettings of Factory Shipment Button Operation System Constant SettingRemote Control Direct Operation Remote Control Menu Operation Picture SettingInstall Setting Feature SettingService Mode Setting Items VSM PresetHow to install Chip parts Resistors, capacitors, etc Replacement of Chip ComponentSoldering Iron Transistors, diodes, variable resistors, etcPreset Setting Before Adjustment Adjustment PreparationAdjustment Items „ Check Items „ VSM Preset SettingNo.YA4761-17 Adjustment Location AV-21MXP6/V, AV-25MXP6/VFront 18 No.YA476 Adjustment Location AV-29MXP6/VMain PWB ASS’Y CRT Socket Setting Method Service Mode ItemsMemorize the Adjustment Data Release of Service Mode20 No.YA476 Service Mode Flow ChartPAL Secam NTSC3 NTSC4 Video Initial Setting Value of Service Mode32 ~ +31 No.YA4761-2122 No.YA476 No.YA4761-23 Mode AV-21MXP6/V Function100Hz 300Hz 1kHz 3kHz 8kHz AV-25MXP6/V Function+12 AV-29MXP6/V Function+11 No.YA4761-2543 50Hz Others 60Hz CompressS.CR 32 ~ +31 LIN 32 ~ +3150Hz 60Hz 43 50HzCool Warm Normal Theater Bright SoftTheater Measuring Test point Adjustment part Description Instrument Adjustment Procedure Check ItemB1 Voltage High Voltage HV voltmeterTuner / if Circuit Delay PointAGC FocusPAL V. Position PositionNtsc V. Position SizeNtsc H. Size PAL H. SizeSide PIN PAL Side PINPAL V. Linearity LinearityNtsc V. Linearity Corner PINNtsc H. BOW BOWPAL H. BOW PAL Trapezium PIN Follow the same to 7 as in PAL Side PINNtsc Trapezium PIN Select 8. COR-UPVideo Circuit „ Video 2 SET ComponentWhite Composite White BalanceSUB SUB BrightContrast SUB ColourPAL Tint SUB TintNtsc 3.58 Tint Ntsc 4.43 TintSTANDARD, Soft and Theater VSM Preset Setting1. R Drive to 3. B Drive to the values Warm and NormalPurity and Convergence „ Purity Adjustment No.YA4761-41 „ Static Convergence Adjustment„ Dynamic Convergence Adjustment Self Check Functions Outline Indication by the Power LEDSelf Check Items Self Check Indicating FunctionVPT Copyright 2006 Victor Company of Japan, Limited Schematic DiagramsIndication of Parts Symbol Example SafetyIndications on the Circuit Diagram Specified Voltage and Waveform ValuesAV-21MXP6/V, AV-25MXP6/V AV-29MXP6/V ContentsMain PWB Pattern 2No.YA476No.YA4762-32-4No.YA476 Main PWBFront Control PWB1/2 No.YA4762-72-8No.YA476 Main PWB Circuit Diagram AV-21MXP6/V 1/4 2/4 SHEET1No.YA4762-92-10No.YA476 Main PWB Circuit Diagram AV-21MXP6/V 3/44/4 SHEET2No.YA4762-112-12No.YA476 Main PWB Circuit Diagram AV-25MXP6/V 1/4 2/4 SheetNo.YA4762-132-14No.YA476 Main PWB Circuit Diagram AV-25MXP6/V 3/44/4 SHEET4No.YA4762-152-16No.YA476 Main PWB Circuit Diagram AV-29MXP6/V 1/2 SheetNo.YA4762-172-18No.YA476 Main PWB Circuit Diagram AV-29MXP6/V 2/2 SheetNo.YA4762-192-20No.YA476 CRT Socket PWB Circuit Diagram AV-29MXP6/V SheetNo.YA4762-212-22No.YA476 Front Control PWB Circuit Diagram AV-29MXP6/V SheetNo.YA4762-232-24No.YA476 Bass PWB Circuit Diagram SheetNo.YA4762-25 26No.YA476 FrontNo.YA4762-272-28No.YA476 Main PWB Pattern AV-29MXP6/VBass PWB Pattern Solder Side CRT Socket PWB Pattern AV-29MXP6/VBass PWB Pattern Parts Side No.YA4762-292-30No.YA476No.YA4762-312-32No.YA476 Front Control PWB Pattern AV-29MXP6/VNo.YA4762-332-34No.YA476 Voltage Charts AV-21MXP6/V, AV-25MXP6/VNo.YA4762-35 Waveforms AV-21MXP6/V, AV-25MXP6/VMain PWB 36No.YA476No.YA476 No.YA4763-1 Parts ListContents No.YA4763-3 Using P.W. Board & Remote Control Unit4No.YA476 100 V01 L01 101 102106 103 105 104 T522 No.YA4763-5 Printed Wiring Board Parts List6No.YA476 No.YA4763-7 8No.YA476 No.YA4763-9 10No.YA476 487 5No.YA4763-11 12No.YA476 V01 L01 100 101 102 106 103 105 104No.YA4763-13 Main P.W. Board Assy SCW-1646A-H214No.YA476 No.YA4763-15 16No.YA476 No.YA4763-17 B Assy AV-29MXP6/V 18No.YA476No.YA4763-19 V01 L01 100 101 103 DY01 2822 3018 102 40 T52220No.YA476 Main P.W. Board Assy SCW-1647A-H2No.YA4763-21 22No.YA476 No.YA4763-23 24No.YA476 CRT Socket P.W. Board Assy SCW-3037A-H2No.YA4763-25 Bass P.W. Board Assy SCW-6003A-H2Packing Packing Parts List Colour Television Do not allow objects or liquid into the cabinet openings Main features Knowing your TV’s featuresNo. Press Remote control buttons and basic functionsRemote control buttons and basic functions Front of the TV TV buttons and functionsTurn off the equipment including the TV before connecting Setting up your TVSetting up your TV Colour System Basic setting for picturePicture Mode Picture Booster Picture Setting White BalanceAI ECO Sensor ECO/ECO Mode Advanced setting for pictureCompress Blue BackPIP Original features for pictureSound Mode Basic setting for soundSound System BalanceAI Volume Advanced setting for soundCinema Surround EqualizerDVD Picture Mode Auto Signal DetectDVD Sound Mode DVD MenuCustomized setting Beep VIDEO-2 Setting DisplayAuto Program TV channel presettingDelete TV channel presetting CH/CC number Additional preparation Before connectingTroubleshooting AV-25MXP6 SpecificationsModel AV-29B316 AV-29M316 AV-29S356 AV-29B316BK

AV-29MXP6/V, AV-21MXP6/V, AV-25MXP6/V specifications

The JVC AV-25MXP6/V, AV-21MXP6/V, and AV-29MXP6/V are a trio of high-performance CRT televisions that represent a combination of cutting-edge technology and practical design, catering to the diverse needs of home entertainment enthusiasts. These models are characterized by their impressive picture quality, robust build, and user-friendly features, making them a prominent choice during their production era.

One of the key features of these models is their screen sizes, which cater to different room sizes and viewing preferences. The AV-25MXP6/V offers a compact 25-inch display, ideal for smaller living spaces or bedrooms, while the AV-21MXP6/V with its 21-inch screen is perfect for desk setups or as a secondary television. The AV-29MXP6/V, on the other hand, boasts a larger 29-inch display, making it suitable for home theaters or larger family rooms.

JVC is renowned for its superior picture technology, and these models are no exception. They utilize a high-quality CRT screen that provides deep contrast, vivid colors, and sharp details. The picture performance is further enhanced by JVC's proprietary circuitry, including a dynamic contrast system that adjusts brightness and contrast levels based on the content being displayed, resulting in a more immersive viewing experience.

Moreover, these televisions come equipped with several input options, including RF, composite, and S-video inputs, allowing users to connect multiple external devices such as DVD players, game consoles, and VCRs. With built-in tuners, viewers can easily access over-the-air broadcasting, making these models versatile entertainment hubs.

Another noteworthy characteristic is the user-friendly interface that JVC has engineered into the AV-25MXP6/V, AV-21MXP6/V, and AV-29MXP6/V models. The on-screen menu provides quick access to settings and customization options, allowing users to tailor the viewing experience to their preferences, including the ability to adjust color tones and picture settings.

In addition to their functionality, these televisions also sport an elegant design that incorporates a sleek frame and aesthetically pleasing finish, making them a suitable complement to any home décor.

Overall, the JVC AV-25MXP6/V, AV-21MXP6/V, and AV-29MXP6/V models represent a harmonious blend of technology, style, and user-centric features, making them reliable choices for anyone seeking quality CRT televisions for their home entertainment needs. Though newer technologies have since emerged, these models remain a fond memory for many who experienced their remarkable performance.
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