FUNAI LT5-S20BB, Service Manual

Page: 22 / 56

7-2
IF/Video Block Diagram
A7344BLIF
JK751
15 11
7
VIDEO-B
VIDEO-G VIDEO-R
CN102A
TU2
SIF-OUT
SD
A
SCL
DIF-OUT2 DIF-OUT1
6
10
9
18 19
SIF
MAIN CB
A
VIDEO SIGNAL
A
U
DIO SIGNAL
T
O
A
UDIO BLOCK
DIA
GRAM
INPUT
-0(INV)
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
Q734
JK722 VIDEO-IN2 JK721 S-VIDEO-IN
T
O
SYSTEM
CONTR
OL
BLOCK DIA
GRAM
CY
TO LCD BLOC
K
DIA
GRAM
(CN102B)
(TUNER UNIT)
B
UFFER
VIDEO-B
21
VIDEO-R
19
VIDEO-G
20
VIDEO1
22
CN103A
TO LCD BLOC
K
DIA
GRAM
(CN103B)
S-VIDEO-C
2 TU-VIDEO
10
VIDEO2
9
CN101A
TO LCD BLOC
K
DIA
GRAM
(CN101B)
DTV
-Pb
13
DTV
-Y
11
DTV
-Pr
12
S-VIDEO-Y
3
8
19 20
VIDEO-IN1
VIDEO-OUT
SLO
W
-SW
17 16
16
RAPID-SW
AFT
-OUT
VIDEO-OUT
SD
A
SCL S-VIDEO-SW AFT
-IN
FB-IN
Q11
SLO
W
-SW
Q731
RAPID-SW
Q730
Q726
B
UFFER
Q744
B
UFFER
Q12
B
U
FFER
Q311
B
UFFER
Q312
B
U
FFER
WF2
WF3
WF8 WF7
WF4
WF6
WF5
IC851
(INPUT SELECT)
SW CTL
3 5
9
10
11
4
CN55
TU-SD
A
1
TU-SCL
2 DIF-OUT1
5 DIF-OUT2
7
CN57
CVBS
13
DTV
-Pb
11
DTV
-Y
9
DTV
-Pr
7
T
O
D
V
B-T MODULE
CBA UNIT
T
O
D
VB-T MODULE
CBA UNIT