9-2
L3250BLIF
IF/Video Block Diagram
T
O
A
UDIO
BLOCK DIA
GRAM
CN103A
TO
LCD BLOCK
DIA
GRAM
CN103B
CVBS
11
S-VIDEO-C
7
S-VIDEO-Y
9
INPUT
-0(INV)
INPUT
-1(INV)
SA
W
FIL
TER
TU1
SF11
IF
AG
C
SD
A
SCL
1
7
3
2
SIF
MAIN CB
A
VIDEO SIGNAL
A
UDIO SIGNAL
T
O
A
UDIO BLOCK
DIA
GRAM
JK706
VIDEO-Y
IN
JK707
VIDEO-Pb/Cb
IN
JK708
VIDEO-Pr/Cr
IN
JK703
VIDEO1
-IN
JK701
S-VIDEO
IN
B
UFFER
Q32
SD
A
TO
SYSTEM CONTR
OL
BLOCK DIA
GRAM
<LCD TV
SECTION>
SCL
S-SW
CY
CN103A
TO
LCD BLOCK
DIA
GRAM
CN103B
VIDEO-Y
5
VIDEO-Pb/Cb
3
VIDEO-Pr/Cr
1
3
IC781
(INPUT SELECT)
5
Q703
4
13
12
Q702
14
1
2
Q701
15
SW
CONTR
OL
10
9
11
INPUT
-0
INPUT
-1
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
Q707
Q708
Q704
Q705
Q706
(TUNER UNIT)
B
UFFER
B
UFFER
B
UFFER
B
UFFER
B
UFFER
B
UFFER
WF7
WF8
WF9
WF10
WF11
WF12
CF31
IC31
(IF SIGNAL PR
OCESS)
VIF
AMP
VIDEO
DET
VCO
4.5MHz
FIL
TER
RF
AG
C
AMP
SIF
AMP
16
13
18
17
4
7
8
1
XT
AL-IN
14
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
AFT
-IN
5
SIF
TRAP
11
FSC
IF A
GC DET
AFT
EQ
AMP
2
DEFEA
T
T
O
DIGIT
AL
SIGANL
PR
OCESS
BLOCK
DIA
GRAM
WF13
WF14
CN1701
VIDEO-Y(I/P)
VIDEO-C
TP1805
DVD-Y
TP1806
CHROMA
CN601
D
VD MAIN CB
A UNIT
9
D
VD-C
3
8
D
VD-Y
1