Block Diagram -Tuner Section - Sony CDX-CA720X Service Manual

CDX-CA720X
3-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU10
J10
MPX
2 ANTFM 10
(ANTENNA)
ANTAM AM DET 8
1
S-METER 14
I2C SDA
12
I2C SCL
13
E2PROM SDA 17
E2PROM SCL
18
ELECTRONIC VOLUME
IC331
ACOUT RCH 36
ACOUT LCH 38
ACIN RCH 35
4 AUX-LCH
R-CH CDR 42 MD RCH
OUT FL 28
A
CD
CDL 43 MD LCH
(Page 15) SECTION
OUT RL 27
12 MPX1
9 AM/MPX2
OUT FR 26
13 LEVEL
14 MPIN OUT RR 25
19 SDA
20 SCL
17 EXA-ATT
SYSTEM CONTROL
IC501 (2/3)
ATT 69
70 VOL ATT BEEP 35
AMP ON 67
66
AMP ATT
40
TEL ATT
ACC IN 38
37
TEST IN
VSM
2
45 I2C SIO
47 I2C CKO
TUN ON 49
9 DSTSEL/ PW ON 50
FUNCSEL
ILL ON 93
86 E2P SIO
E2P CKO
87
SYSRST 24
BUSON 25
UNISI 43
UNICKO 44
UNISO 42
BU IN 28
16
AF AMP
IC407
8 14
R-CH
11 13
L-CH AMP
IC332
MUTE MUTE
Q171 Q181
L-CH AMP
IC409
FL
3 1
RL
5 7
R-CH
MUTE
Q625
MUTE MUTE
D621
LINE MUTE
Q175 Q185
CONTROL DELAY BATT
Q621,622
POWER SUPPLY
IC601
2 TUN-ON SW
POWER ON
SWITCH 4 STB
Q613
D650
10V ON
3 10V ON
SWITCH
SW
Q650
D651
ILL ON
SWITCH
Q603
ILL B+
BATT REG ILL+5V
CNJ581
Q601
BUS
BUS INTERFACE
CONTROL IN
IC581
8
BUSON 1 6 3
13 RST DATA I/O 6 5 2
12 BUSON CLK 4 4 1
8 DATA OUT
7
11 CLK IN
9 DATA IN
BATT
10 B/U-C
RST 2
BATT DET
BATT 3 BATT
Q581,D584,585
16
PJ151
L
-1
BUS AUDIO IN
R-CH R
-2
L
-5
AUDIO OUT FRONT
R-CH R
-6
L
-3
AUDIO OUT REAR
R-CH R
-4
POWER AMP
IC751
CNP781
1
5 FL+
12
3 9 FL-
9 2 RL+
11
7 10 RL-
16 AUX
4 FR+
4 STBY
12 FR-
22 MUTE
R-CH
3
RR+
11 RR-
D625
TEL
13 ATT
ATT
Q585
ACC
DETECT 7 ACC
Q571
15 TEST
D612
AMP+B 6 5 AMP R
D613
ANT+B 8 6 ANT R
8
BU+B(5.8V) 5 BU+5.8V
GND
COM8.7V 9
COM+8V
TU+B(5.1V)
10 TU+5V
19
BATT
TU+B(8.4V) 11 TU+8.5V
17
VCC 7
BATT
F901
10A
18
16 +B (BATT)
• Signal path
: FM
: AM
: CD
• R-ch is omitted due to same as L-ch.