Read Sony CDX-S2050C / CDX-S2050V Service Manual online
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14
CDX-S2050C/S2050V
CDX-S2050C/S2050V
3-2. BLOCK DIAGRAM – MAIN SECTION –
1 ANT
7 TU LCH
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
POWER AMP,
POWER SUPPLY
IC750
SYSTEM CONTROL
IC501 (2/3)
CN601
6 TU RCH
R-CH (FRONT)
R-CH (REAR)
R-CH (REAR)
BATT
9 CD LCH
8 CD RCH
R-CH
4
3
3
10
VCC
11
TU VDD
15
E2P VDD
13
TU-SCL
14
TU-SDA
6
S-METER
7
TU MUTE
16
E2P SCL
17
E2P SDA
39 VSM
AUDIO+8.3V
TU+5V
BU+3.3V
BU+3.3V
12 TU ATT
25 EEP CKO
24 EEP SIO
24 EEP SIO
8
MUTE CONDITION
5
QUALITY
RDS
53 TU ATT IN
38
38
13
QUALITY
NS MASK
DAVN
RDS ON
L-CH
R-CH
CD-L
R-CH
17
18
18
OUT SUB-L
OUT SUB-R
R-CH
L
R
5
3
3
OUT FL+
OUT FL-
9
7
7
OUT RL+
OUT RL-
29
27
27
AMP-REM
R-CH
ANT-REM
BATT
30
37
37
AUDIO8.3V
B.UP+B
31
33
33
SERVO3.3V
MECHA6V
34
PANEL+B
TU+5V
BATT
25
24
24
OUT FR
OUT RR
29
MUTE
2 SDA
AUDIO+8.3V
BU+3.3V
SERVO+3.3V
MECHA+6V
MECHA+6V
PANEL+B
4 SCL
SDA
SCL
16 BEEP
22 STB
25 DIAG
25 DIAG
AUDIO+8.3V
35 VP
15
7
10
12
11
16
1
9
2
4
3
5
6
30
31
31
SCL
SDA
SCL
SDA
SCL
SDA
SCL
SDA
33
I2C CKO
34
I2C SIO
9
VOL ATT
86
ATT
5
BEEP
26
AMP STB
8
DIAG
54
BU IN
73
30
56
TEST IN
12 IN FL
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
AMP-REM
ANT-REM
ACC
TEST
23
OUT FL
11 IN RL
22
OUT RL
MUTE
Q441
MUTE
Q481
AUDIO OUT
J330
MUTE DRIVE
Q478,479
NS MASK
CONTROL
Q22
RDS DECODER
IC51
BATT
72
74
ACC IN
TEL MUTE
BATTERY CHECK
Q580-582
ACC CHECK
Q631
+5V REG
Q1
MUTE
Q461
13
TEL-MUTE
D479
D580,581
FU601
CD
SECTION
A
11
12
9
10
16
1
7
XTI
SCL
SCL
BU+3.3V
SDA
SDA
INTN
XTO
MPX
VDDA
VDDD
TEL MUTE
Q651
RDS POWER
CONTROL
Q51
9
15
X51
8.664MHz
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: FM
: MW/LW
(Page 13)
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