JVC AV-29V514/B service manual Main CPU Main PWB IC701 PIN Function, Pin no Pin name Remark

Page 6

2.3MAIN CPU [MAIN PWB : IC701] PIN FUNCTION

Pin no.

Pin name

I/O

Remark

 

 

 

 

1

VssP2

-

GND

2

VssC4

-

GND

3

V1.8C4

I

1.8V (Digital)

4

V3.3A3

I

3.3V

5

VrefP_Sdac

I

3.3V (Positive)

6

VrefN_Sdac

-

GND

7

VrefP_Sdac

I

3.3V (Negative)

8

VrefN_Sdac

-

GND

9

VrefP_Sdac

I

3.3V (Positive)

10

XtalIn

I

24.567MHz for system clock

11

XtalOut

O

24.567MHz for system clock

12

VssA1

-

GND

13

NECK

I

V-guard input/ I/O switch

14

CONT

I

1.8V regulator control

15

V5P1

I

+5V

16

Ph2

-

Phase-2 filter

17

Ph1

-

Phase-1 filter

18

Gnd1

-

GND

19

SecPll

-

SECAM PLL decoupling

20

Dec8G

-

Bandgap decoupling

21

EW

O

East-West drive output

22

VDRB-

O

Vertical drive B output

23

VDRA+

O

Vertical drive A output

24

Vif1

I

Video IF input 1

25

Vif2

I

Video IF input 2

26

Vsc

-

Vertical sawtooth capacitor

27

Iref

I

Reference current input

28

GndIF

-

GND

29

Sif1

I

Sound IF input 1

30

Sif2

I

Sound IF input 2

31

AGC

O

Tuner AGC output

32

EHT

I

EHT/overvoltage protection input

33

Ssif/RefIn/Avl/RefOut

O

Automatic Volume Levelling/ sound IF input /

 

 

 

subcarrier reference output / external reference

 

 

 

signal input for I signal mixer for DVB operation

34

L3

I

Audio-L3 input (left signal)

35

R3

I

Audio-R3 input (right signal)

36

L_OUT

O

Audio L output

37

R_OUT

O

Audio R output

38

DecsDem

-

Decoupling sound demodulator

39

QssO/AmO/AudeEm

O

QSS intercarrier output / AM output /

 

 

 

deemphasis / (front-end audio out)

40

Gnd2

-

GND

41

PllIf

-

IF-PLL loop filter

42

SifAgc

-

AGC sound IF

43

IfVo/FmRo/DvbO

O

Not used

44

NC

O

Not used

45

V8AudioSwitches

I

8V

46

AgcSsif

-

AGC capacitor second sound IF

47

V5P2

I

5V

48

V_OUT

O

Video output

49

L1

I

Audio-L1 input

50

R1

I

Audio-R1 input

51

V3

I

Video V3 input

52

C4

I

Not used

53

Audio2InL

I

Not used

54

Audio2InR

I

Not used

55

V2/Y

I

Video 2 input

56

L2

I

Audio L2 input (Left signal)

57

R2

I

Audio R2 input (right signal)

58

Y3/Cvbs

I

S-Video Y1 input

59

C1

I

S-Video C1 input

60

AudioLsL

O

Audio L output for audio power amplifier

61

AudioLsR

O

Audio R output for audio power amplifier

62

HP_L

O

Headphone L

63

HP_R

O

Headphone R

Pin no.

Pin name

I/O

Remark

 

 

 

 

64

CVBSO/PIP

O

CVBS / PIP output

65

SVM

O

Scan velocity modulation output

66

FbiSo

I

Flyback input/sandcastle output

67

Hout

O

Horizontal output

68

VssComb

-

GND

69

V5Comb

I

5V

70

Vin/R2/Pr

I

PIP R input

71

Uin/B2/Pb

I

PIP B input

72

Yin/G2/Y

I

PIP G input

73

Ysync

I

Not used

74

Yout

O

Not used

75

Uout/INSSW2

I

YUV insertion input

76

NC

O

Not used

77

INSSW3

I

YUV insertion input

78

R3/Pr

I

Component PR input (Video-2)

79

G3/Y

I

Component Y input (Video-2)

80

B3/Pb

I

Component PB input (Video-2)

81

Gnd3

-

GND

82

V5P3

I

5V

83

BCL

I

Beam current limiter input

84

BLKIN

I

Black current input

85

Rout

O

R output

86

Gout

O

G output

87

Bout

O

B output

88

V3.3A1

I

3.3V

89

RefAdN

-

GND

90

V3.3RefAdP

I

3.3V (Positive)

91

RefAd

I

3.3/2V

92

GndA

-

GND

93

V1.8A

I

1.8V

94

V3.3A2

I

3.3V

95

VssADC

-

GND

96

V1.8ADC

I

1.8V

97

REMOTE

I

Remote control

98

PW_LED

I

POWER LED control

99

P11/TO

I

POWER LED control

100

V1.8C2

I

1.8V

101

VssC2

-

GND

102

COMPONENT-PIP

-

Not used

103

COMB_SW_NT3.5/OTHER

-

Not used

104

VER_PROTECT

O

X-ray protect

105

S_REDUCE

O

Sound control

106

P00/I2SDI1

O

Not used

107

POWER

O

SUB POWER control

108

SCL1

I

I2C bus clock

109

SDA1

I/O

I2C bus clock

110

V3.3P

I

3.3V

111

ROTATION

O

ROTATION

112

3.58/OTHER

O

NTSC 3.58 detection

 

 

 

 

113

A_MUTE

O

Audio muting

114

4.5/OTHER

O

NTSC 4.43 detection

115

PROT

I

Protect

116

ECO_IN

I

ECO sensor level detection

117

V1.8C1

I

1.8V (Digital)

118

DecV1V8

I

1.8V

119

KEY_IN

I

Key scan data

120

VDO_DET

I

Video DET input

121

VSSC1+P1

-

Digital GND

122

P24/PWM3

I

S-Video DET input

123

P25/PWM4

O

GTVA_reset

124

V1.8C3

I

1.8V (Digital)

125

VssC3

-

GND

126

P12/Int2

I

External interrupt

127

SDA0

I/O

I2C bus data (for memory)

128

SCL0

I

I2C bus clock (for memory)

1-6 (No.YA139)

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Contents Table of Contents AV-29V514/BSpecification Items ContentsLeakage Current Check Section PrecautionSafety Precautions Alternate Check MethodSection Specific Service Instructions FeaturesFunctions „ Remote Control Unit Component VIDEO-2 Input Terminal „ Front Panel Controls„ Rear Terminal VIDEO-1 Input Terminal Output TerminalMain CPU Main PWB IC701 PIN Function Pin no Pin name RemarkSection Disassembly Main PWB Speaker FBT Replacement of Memory IC Procedure for Replacing Memory ICFactory Setting Value „ Setting of System Constant SET Setting item Setting content Setting valueEdit / Manual „ Setting of Basic FunctionsPower Language Thai TintSoldering Iron Replacement of Chip ComponentHow to install Chip parts Resistors, capacitors, etc Transistors, diodes, variable resistors, etcPresetting Before Adjustment Section AdjustmentAdjustment Preparation Adjustment ItemsAdjustment Locations Front Control PWB ASS’Y 2/2Basic Operation in Service Menu HOW to Enter Service Menu Basic Operation in Service MenuService Menu Items Method of Setting NotesService Menu Flow Chart MHzIf Circuit Adjustments Adjustment ProcedureFocus Adjustment Delay PointComposite White Balance Video Circuit AdjustmentsWhite Component White BalanceSUB Bright SUBContrast SUB Colour PAL ColourSecam Colour Audio Setting SUB TintSlope Deflection Circuit Adjustments„ Compress OFF PAL V. SlopeNtsc V. Height HeightPAL V. Height PAL H. PositionNtsc Side PIN Side PINPAL Side PIN TrapeziumNtsc Corner PIN Corner PINPAL Corner PIN ParallelSelect Picture Features PAL Trapezium PIN Ntsc Trapezium PIN„ Video 2 SET Component VSM Preset SettingPreset VSMPurity and Convergence „ Purity Adjustment „ Static Convergence Adjustment „ Dynamic Convergence AdjustmentSelf Check Functions Outline Section TroubleshootingIndication by the Power LED Self Check Items32 No.YA139 WPC
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