FUNAI LCD-A2006, Service Manual

7-4

L4620BLLCD

LCD Block Diagram

LCD MAIN CB

A UNIT

VIDEO SIGNAL

IC301

(LCD DRIVE / LCD SIGNAL PR

OCESS)

TO

IF/VIDEO

BLOCK 

DIA

GRAM

CN103A

CN103B

182

181

180

179

175

174

173

QDR

VHC

QDR

VVB

QDR

VHB

QDR

VHA/QDE

QDR

VV

A

QDR

VHE

QCLKL

LCD MODULE

VREF(4)

28

VREF(0)

32

VREF(1)

31

VREF(2)

30

VREF(3)

29

VREF(7)

24

VREF(5)

26

VREF(6)

25

VREF(8)

23

VREF(9)

22

104

105

103

VCOM

35

VCOM

36

P

A

NEL+10.8V

CN311

169

168

167

166

165

161

160

159

158

155

154

153

152

151

150

146

145

LCD MODULE

TP322

TP323

TP318

TP319

TP320

TP321

143

142

141

140

139

135

134

133

132

131

130

129

128

127

123

122

121

120

119

116

115

114

113

106

TP316

TP317

TP312

TP313

TP314

TP315

CN312

OR(3)

31

OR(4)

30

OR(5)

29

OR(0)

34

OR(1)

33

OR(2)

32

OG(3)

24

OG(4)

23

OG(5)

22

OG(0)

27

OG(1)

26

OG(2)

25

OB(3)

17

OB(4)

16

OB(5)

15

OB(0)

20

OB(1)

19

OB(2)

18

ER(3)
3

ER(4)
2

ER(5)
1

ER(0)
6

ER(1)
5

ER(2)
4

EG(3)

47

EG(4)

46

EG(5)

45

EG(0)

50

EG(1)

49

EG(2)

48

EB(3)

40

EB(4)

39

EB(5)

38

EB(0)

43

EB(1)

42

EB(2)

41

CVBS1

8

CVBS2

9

S-VIDEO-C

5

S-VIDEO-Y

6

VIDEO-B

3

VIDEO-R

1

VIDEO-G

2

VCOM

3

VCOM

4

CN312

84

85

X301

54MHz

XIN

XOUT

CLKV

14

VCOM

CONTR

OL

Q971

IC981

91

95

96

98

STV1

13

LP

44

CN311

POL

43

HMS1-E

7

CLKH

10

STH1

42

HMS1-O

13

WF11

WF10

WF12

WF9

VIDEO

SIGNAL

PR

OCESS

NTSC/P

AL 

SEP

ARA

TION

B

URST 

LOCKED

OUTPUT 

CONTR

OL

CHR

OMA 

DECODER

SECAM PDM

RCO

P

ANEL

SIGNAL

PR

OCESS

TV

SIGNAL

PR

OCESS

INPUT 

CONTR

OL

CVBS

Y

C

B

G

R

A/D

A/D

A/D

A/D

33

44

13

42

40

21

31

QDR

VHC

97

WF14

WF13

B

G

R

B

G

R

R905

R907

R901

R904

R902

R997

VCOM

TO

SYSTEM

CONTR

OL

BLOCK

DIA

GRAM