Read Sony CDX-C480 / CDX-C580 Service Manual online
4-3. BLOCK DIAGRAM — MAIN SECTION —
CDX-C480/C580
– 29 –
– 30 –
-3
L
2
1
62
63
64
2
3
1
1
1
2
18
12
16
13
11
21
20
22
19
83
81
53
8
9
10
6
7
10
13
15
16
5
4
CNJ600
(ANT)
AM ANT
FM L-CH
FM R-CH
SEEK
MONO
AM/FM IFC
VCO
SD
ST-IND
S-METER
FM+B
TU+B
AM+B
VT
LO/DX
AM DET
FM ANT
TUNER ASSY
TU1
R-CH
R-CH
Signal path
: FM
: AM
: CD
: FM
: AM
: CD
CD
SECTION
PJ401
R-CH
R
-1
-2
BUS AUDIO IN
L
35
36
37
38
TONE
21
20
2
7
13
12
ELECTRONIC VOLUME
IC401
18
17
16
L3
L1
L4
L2
CL
DI
CE
LFOUT
LROUT
SYSTEM CONTROL
IC801(2/2)
59
58
41
104
14
13
90
49
72
37
64
109
47
48
12
15
60
62
FM8V
AM8V
D602
D601
TU 5V REG
Q601
SWITCH
Q901,902
COM+B REG
Q903
D-BASS
SWITCH
S801
ROTARY
ENCODER
RE801
TU5V
2
5
4
6
85
10
11
9
18
9
1
20
PLL
IC601
SEEK OUT
P3
IFIN
AMOSC
CE
DIN
CLK
DOUT
X OUT
X IN
FMOSC
PD
LO/DX
VT
CONTROL
Q611
S-METER
BUFFER
Q801
MONO
SWITCH
Q609
VCO
BUFFER
Q602
X601
7.2MHz
29
13
2
10
3
11
4
9
8
6
12
1
22
21
36
76
24
20
46
43
79
106
107
C480
BUS INTERFACE
IC803
RST
BATT
CLK
CLK
DATA
BUS ON
RES
B/U C
CLK IN
DATA IN
DATA OUT
BUS ON
BATT
CHECK
Q906
BACK UP LINE
7
8
2
3
1
5
6
4
BACK UP LINE D807
D910
CNP801
(BUS CONTROL IN)
IR
RECEIVER
IC802
Q706
PULL UP 5V
LCD DRIVE
IC801
CE
CLK
DATA
LCD801
AMBER LED
SWITCH
Q803
GREEN LED
SWITCH
Q803
U COM 5V
COM+B
BACK UP LINE
RESET
IC902
S901
RESET
CNP801
(REMOTE IN)
(REMOTE IN)
KEY MATRIX
LSW801-823
LSW801-823
(KEY BOARD)
KEY ACTIVE
Q914,915
PL801
PL802
PL802
LAMP REG
Q802, 805
LSW801, 803-819
LED801-805
TEL MUTE
SWITCH
Q916
4
5
9
10
11
6
8
8
2
3
7
POWER SUPPLY
IC901
STBY
BU5V
COM8V
COM8V
AM8V
FM8V
FM8V
PULL UP 5V
U COM 5V
COM+8V
AM8V
FM8V
MODE2
MODE1
VCC
AMP+B
ANT+B
BACK UP LINE
BACK UP LINE
ACC
CHECK
Q905
D906
F901
11
3
12
4
10
2
9
1
13
TEL MUTE
16
BATT
7
ACC
5
AMP REM
6
ANT REM
15
TEST
PLL CE
X1A
X0A
PLL SO
PLL CKO
PLLSI
SD IN
ST IN/MONO
FM 8V
Q612
S-METER
KEY IN0
SYSRST
UNI CKI/O
UNI SO
UNI SI
UNI SI
BUS ON
BU IN
BU IN
SIRCS
AD ON
AVRH
KEY ACK
RE0
RE1
ACC IN
TEL MUTE
KEY IN1
KEY IN2
RC IN0
RC IN1
RESET
108 LAMP ON
LCD CKO
LCD SO
P2/S2
S3
P1/S1
LCD CE
REGMOD1
REGMOD2
PW SEL
AMP MUTE
BAND
BEEP
D801
Q402
AU MUTE
TU MUTE
VOL CE
VOL SO
VOL CKO
PW ON
TEST
NOSE
Q110
Q401
Q111
LINE AMP
IC402
INFL
INRL
OUTFL
OUTRL
12
11
5
3
9
7
POWER AMP
IC200
22 4
FL
RL
MUTE
STBY
-6
REAR
R
-5
L
-4
FRONT
R
R-CH
R-CH
PJ401
CNP301
R-CH
CNP501
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
55
AMP ON 56
100
110
111
80
96
40
SW801
(POWER SELECT)
OFF
ON
SW802
FREQUENCY
SELECT
FM200K
AM10K
E MODEL
04
C580
C480
BACK UP
D918
D919
LINE OUT
+
92
93
X800
4.19MHz
X0
X1
73
74
X801
32.768kHz
FM50K
AM9K
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