Sony CDX-CA650X - Understanding Radio Data System (RDS); AF Function for Best Reception

1616
CDX-CA650X/CA660X/CA690X
PJ601
(ANTENNA)
2 10
1
ANTFM MPX
CDL
8
AM DET
14
S-METER
12
I2C SDA
13
I2C SCL
17
E2PROM SDA
18
E2PROM SCL
ANTAM
TUNER UNIT
TU601
2
45
47
70
13
14
19
20
17
9
12
43
4 28
SYSTEM CONTROL
IC801 (2/3)
ELECTRONIC VOLUME
IC401
AUX LCH OUT FL
CA650X/CA690X
PJ401 (1/2)
CA650X/CA690X
CA650X/CA690X
CA650X/CA690X
CA660X
L-CH
AMP
IC301
27
3
5
1
7
L-CH
AMP
IC431
L-CH
AMP
IC405
2
7
13
12
3
5
1
7
OUT RL
35
BEEP
ATT
67
69
AMP ON
66
AMP ATT
40
TEL ATT
38
ACC IN
MD LCH
MPXI
AM
LEVEL
MPIN
SDA
SCL
EXA ATT
VOL ATT
VSM
I2C SIO
I2C CKO
DSTSEL
EE SIO
FM 50K
AM 9K
FREQUENCY
SELECT
SW802
CA650X/
CA660X
CA690X
EE CKO
AUDIO OUT REAR
AUDIO OUT FRONT
CD
SECTION
A
MUTE
CONT
Q912,913
Q102
MUTE
R-CH
DELAY BATT
D908
Q101
MUTE
22
MUTE
4
STBY
16
AUX
11
12
5
3
9
7
POWER AMP
IC404
1
9
2
10
CNP902
R-CH
R-CH
PJ401 (2/2)
FL+
FL-
RL+
RL-
4
12
FR+
FR-
3
11
RR+
RR-
16
+B (BATT)
13
ATT
5
AMP R
6
8
19
ANT R
GND
R-CH
BATT
F901
10A
D919
D907
TEL
ATT
Q901
7
ACC
15
TEST
49
50
TUN ON
37
TEST IN
ACC
CHECK
Q902, D934, 935
POWER SUPPLY
IC901
3
PW ON
4
2
6
AMP +B
8
ANT +B
7
VCC
9
COM 8V
10
TU 5.6V
11
TU 8.7V
COM 8V
5
BU+B BU 5V
TU 5.6V
TU 8.7V
8.7V ON
5.6V ON
STB
9
87
86
()
FM 200K
AM 10K
CA660X
17
18
R-CH
L
R
L
R
BUS AUDIO IN
L
R
• Signal path
:FM
:AM
:CD
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)