6
6
SB-V55A
3-2. BLOCK DIAGRAM — MAIN SECTION —
• Signal path
: AUDIO
: VIDEO
: CHROMA
: Y
35
29
3
8
13
AUDIO
L
AUDIO
L
AUDIO
L
AUDIO
L
INPUT 4
J2(1/4)
INPUT 1
J6(1/4)
INPUT 2
J4(1/6)
INPUT 3
J4(2/6)
33
27
1
10
11
14
4
5
10
15
AUDIO
R
AUDIO
R
AUDIO
R
AUDIO
R
INPUT 4
J2(2/4)
INPUT 1
J6(2/4)
INPUT 2
J4(3/6)
INPUT 3
J4(4/6)
36
30
2
7
12
31
INPUT 4
VIDEO
VIDEO
VIDEO
VIDEO
J2(3/4)
INPUT 1
J6(3/4)
INPUT 2
J4(5/6)
INPUT 3
J4(6/6)
4
9
14
6
11
16
18
36
2
7
12
6
11
16
INPUT 1
J7
16
7
8
13
15
10
4
S
AUDIO
L
R
OUT
VIDEO
S
INPUT 2
J5(1/2)
S
INPUT 3
J5(2/2)
S
34
32
28
1
26
21
20
5
12
11
9
14
22
4
27
3
9
22
22
1
24
10
5
7
21
20
CONTROL
CONTROL
BIAS
18
BIAS
23
24
25
26
Q2
Q3
Q1
1
SW1
P00
VDD
RESET
XOUT
XIN
P11
D7/CNTR1
D6/CNTR2
P01
P02
P03
P10
D5
D4
D3
D2
D1
D0
P30/INTO
P13
2
INPUT
SW2
3
SW3
4
SW4
AUTO/MANUAL
SW5
3
2
1
32
31
30
4
D7
3
D6
2
D5
1
D4
MANUAL
D3
29
16
5V REG
IC1
+5V(B+)
+5V(B+)
+5V(B+)
+5V
(B+)
+4.9V
(B+)
Q5
Q4
Q6
MANUAL
(RED)
AUTO
(GREEN)
SYNC
DISCRIMINATION
IC3
X1
503.5kHz
+5V(B+)
V2 OUT
VCC
CHIP SELECT
SDA
SCL
TUNERIN
V2 IN
Y4 IN
Y3 IN
Y2 IN
C4 IN
C3 IN
C2 IN
V4 IN
V3 IN
V2 IN
TUNER IN
R4 IN
R3 IN
R2 IN
R1 IN
L4 IN
L3 IN
L2 IN
L1 IN
V3 IN
V4 IN
Y2 IN
Y3 IN
Y4 IN
S
V SWITCH
Y SWITCH
C SWITCH
V SWITCH
LCH SWITCH
RCH SWITCH
L MODE
R MODE
Y SWITCH
SIGNAL
SELECT
CONTROL
SWITCH
IC2
S
N
N
6dB
L1 OUT
R1 OUT
V1 OUT
VCC
CIN
YIN
SDA
SCL
CHIP SELECT
C1 OUT
Y1 OUT
Y/C SEPA
+5V
(B+)
L
L
R
R
M
M
SIGNAL
SELECT
CONTROL
SWITCH
IC4
6dB
6dB
0dB
LPF
DVDD
Y OUT
C OUT
CKIN
VCC1
VCC2
4FSCOUT
X
CLMIN
CMPIIN
FSCOUT
ADIN
Y/C SEPARATION
IC6
+4.9V
(B+)
+4.9V
(B+)
X3
3.58MHz
4FSC CLOCK
GENERATOR
IC7
D8
+5V(B+)
X2
4MHz
CC-15 BOARD
VCC
J2(4/4)
J3
J1
DC IN 6V
!
SYSTEM CONTROL
IC5
D2
VIDEO
IN
SYNC
DET
OSC OUT
OSC IN2
