Block Diagram -Tuner Section - Sony CDX-L550X Service Manual

CDX-L550X/L570X
3-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU601
PJ601
2 ANTFM MPX
(ANTENNA)
1 ANTAM AM DET
S-METER
I2C SDA
I2C SCL
E2PROM SDA
E2PROM SCL
ELECTRONIC VOLUME
(Page 15)
IC401
A
4 AUX LCH
CD
CDL 43 MD LCH
SECTION
10 12 MPXI
8 9 AM
13 LEVEL
14 MPIN
SDA
19
20 SCL
17 EXA ATT
SYSTEM CONTROL
IC801 (2/3)
70 VOL ATT
14 VSM
2
12 45 I2C SIO
13 47 I2C CKO
( )
FREQUENCY
SW802
SELECT
FM 50K
9 DSTSEL
AM 9K
FM 200K
AM 10K
L570X L550X
17 86 EE SIO
18 87 EE CKO
OUT FL 28
OUT RL 27
Q102 Q101
MUTE MUTE
R-CH
MUTE
CONT
Q912,913
D908
ATT 69 DELAY
BEEP 35
AMP ON 67
66
AMP ATT
40
TEL ATT
ACC IN 38
37
TEST IN
TUN ON 49
PW ON 50
16 16
PJ401
R-CH
POWER AMP
IC404
CNP902
5 1 FL+
12
9 FL-
3
9 2 RL+
11
7 10 RL-
16 AUX
4 FR+
12 FR-
4 STBY
R-CH
22 MUTE
3 RR+
11 RR-
BATT
TEL
13 ATT
ATT
Q901
ACC
CHECK 7 ACC
Q902, D934, 935
15 TEST
POWER SUPPLY
IC901
D919
AMP +B 6 5 AMP R
D907
ANT +B 8 6 ANT R
8
GND
BATT
VCC 7 19
17
F901
10A
18
16 +B (BATT)
2 8.7V ON
3 5.6V ON
BU+B 5 BU 5V
4 STB COM 8V 9 COM 8V
TU 5.6V 10 TU 5.6V
TU 8.7V 11 TU 8.7V
• Signal path
L
AUDIO OUT REAR
R
:FM
:AM
:CD