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

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