L6250BLIF
BLOCK DIAGRAMS
6-1
6-2
SAW
FILTER
VIF
AMP
6dB
AMP
RF
AGC
IF
AGC
HPF
VIDEO
DET
REAR
FRONT
TUNER
LINE
SF1
CF32
TU1
IF
AGC
SDA
SCL
FSC
SCL
SDA
RF AGC
AFT
INPUT1
INPUT0
FSC
JK701
V-IN(REAR)
1
11
5
4
8
IF/Video Iuput Select Block Diagram
VIDEO SIGNAL
RF/IF SIGNAL
AUDIO SIGNAL
18
19
4.5MHz
TRAP
4.5MHz
BPF
EQL
Y/C
SEPA.
22
AFT
VCO
10
8
14
21
13
6
3
1
11
12
Q31
BUFFER
3
5
4
13
14
1
2
15
4
SW CTL.
SW CTL.
20
17
Q798,
Q901
BUFFER
BUFFER
BUFFER
Q936
Q951
Q956
BUFFER
Q931
BUFFER
9 10 11
9
11
13
9
12
13
5
3
4
14
TO/FROM
VIDEO/SYSTEM
CONTROL
BLOCK DIAGRAM
JK721
V-IN(FRONT)
JK711
S-V-IN(REAR)
C
Y
MAIN CBA
IC31
IF SIGNAL PROCESS
AGC
TP301
AFT
TP303
CF31
L33
(45.75MHz VCO)
TO AUDIO
BLOCK DIAGRAM
IC781
IN PUT SELECT
IC901
Y-C SEPARATION
IC941
INPUT SELECT
Y
C
SDA
SCL
VHS
S-VHS
VHS
S-VHS
TO VIDEO/SYSTEM
CONTROL BLOCK
DIAGRAM
Q49
10
WF1
Q701
Q702
Q721
TU-AUDIO
Q971
C-OUT
Y-OUT
+8V
Q944