Sharp LC-20AV7U Service Manual - Page 32

LCD Block Diagram

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A7144BLLCD 8-5 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. IC1202 (LCD DRIVE / SIGNAL PROCESS) WF1 TO IF/VIDEO BLOCK DIAGRAM VIDEO-IN1 RF-CVBS S-VIDEO-C S-VIDEO-Y 71 R A/D R 67 CVBS WF3 57 C G A/D G WF2 VIDEO SIGNAL PROCESS 76 Y B A/D B DTV-Y TO DTV MODULE BLOCK DIAGRAM DTV-Pr DTV-Pb TO IF/VIDEO BLOCK DIAGRAM VIDEO-Y VIDEO-Pb VIDEO-Pr 73 75 WF4 54 56 WF5 64 66 WF6 A/D Y A/D Pb A/D Pr R(ODD) G(ODD) LCD RGB SIGNAL PROCESS B(ODD) R(EVEN) G(EVEN) B(EVEN) TO SYSTEM CONTROL BLOCK DIAGRAM VCOM MAIN CBA 148 147 144 143 142 141 140 139 138 137 133 132 131 130 129 128 127 126 117 116 115 114 113 112 111 110 105 98 97 96 95 93 92 91 90 89 OFFEV 106 STV 107 CLKV 108 CLKL 125 STH 149 POL 150 LP 151 CLEAR 156 VIDEO SIGNAL CN1201 29 OR(0) 28 OR(1) 27 OR(2) 26 OR(3) 25 OR(4) 24 OR(5) 22 OG(0) 21 OG(1) 20 OG(2) 19 OG(3) 18 OG(4) 17 OG(5) 15 OB(0) 14 OB(1) 13 OB(2) 12 OB(3) 11 OB(4) 10 OB(5) 6 ER(0) 5 ER(1) 4 ER(2) 3 ER(3) 2 ER(4) 1 ER(5) LCD MODULE CN1202 31 EG(0) 30 EG(1) 22 EG(2) 21 EG(3) 20 EG(4) 19 EG(5) 17 EB(0) 16 EB(1) 15 EB(2) 14 EB(3) 13 EB(4) 12 EB(5) 24 OFFEV 26 STV 28 CLKV CN1201 8 CLKL 31 STH 32 POL 33 LP 34 CLEAR 35 VCOM LCD Block Diagram

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8-5
LCD Block Diagram
A7144BLLCD
TO
IF/VIDEO
BLOCK
DIAGRAM
MAIN CBA
RF-CVBS
S-VIDEO-C
IC1202
(LCD DRIVE / SIGNAL PROCESS)
67
57
76
S-VIDEO-Y
TO
IF/VIDEO
BLOCK
DIAGRAM
TO DTV
MODULE
BLOCK
DIAGRAM
VIDEO-Y
VIDEO-Pb
VIDEO-Pr
66
56
75
A/D
VIDEO
SIGNAL
PROCESS
LCD RGB
SIGNAL
PROCESS
R
B
G
Y
Pb
Pr
A/D
A/D
A/D
A/D
A/D
R
B
G
CVBS
C
Y
WF3
WF1
WF2
WF4
WF5
WF6
VIDEO-IN1
71
DTV-Y
DTV-Pb
73
54
DTV-Pr
64
VIDEO SIGNAL
CN1201
OR(0)
29
OR(1)
28
LCD MODULE
OR(2)
27
OR(3)
26
OR(4)
25
OR(5)
24
OG(0)
22
OG(1)
21
OG(2)
20
OG(3)
19
OG(4)
18
OG(5)
17
OB(0)
15
OB(1)
14
OB(2)
13
OB(3)
12
OB(4)
11
OB(5)
10
ER(0)
6
ER(1)
5
ER(2)
4
ER(3)
3
ER(4)
2
ER(5)
1
EG(0)
31
EG(1)
30
EG(2)
22
EG(3)
21
EG(4)
20
EG(5)
19
EB(0)
17
EB(1)
16
EB(2)
15
EB(3)
14
EB(4)
13
EB(5)
12
OFFEV
24
STV
26
CLKV
28
VCOM
35
STH
31
POL
32
LP
33
CLEAR
34
CN1201
148
147
144
143
142
141
140
139
138
137
133
132
131
130
129
128
127
126
112
117
116
115
114
113
105
111
110
98
97
96
95
93
92
91
90
89
106
107
108
149
150
151
B(EVEN)
G(EVEN)
R(EVEN)
B(ODD)
G(ODD)
R(ODD)
CN1202
STH
POL
LP
156
CLEAR
OFFEV
STV
CLKV
CLKL
8
125
CLKL
VCOM
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.