19
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
X34-3402-7x (2/4)
J
I
H
G
F
47K
10K
0V
3.4V
0.4V
1.6V
4V
0V
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
0V
5V
0V
0V
5V
0V
5V
0V
0V
5V
0V
4.9V
0V or 5V
0V
5V
0V
0V
5V
5V
0V
0V
5V
5V
0V
0V
0V
0V
0V
5V
0V
5V
0V
5V
5V
0V
0V
5V
0V
5.0V
0V
5.0V
5.0V
0V
5V
4.0V
0V
0V or 5V
4.0V
0V
5.0V
0.2V
3.4V
5.0V
3.3V
0.6V
3.8V
8.1V
3.0V
0V
5.0V
0V
5V
5.0V
0V
0V
0V
0V
0V
5V
4.5V
0V
0V
5V
5.0V
5.0V
5.0V
0V
5.0V
0V
0V or 5V
0V or 5V
5.0V
14.4V
11.4V
0V
0V
5V
5V
0V
0V
5V
5V
0V
5.0V
0.5V or
5.0V
5V
0V
1.4V
IC11
IC6
IC8
IC15
∗
IC1
CN2
∗
Q151
Q155
D403
D203
D402
VFD REGULATOR
D401
DSI
∗
C
6-
SYSTEM u-COM
PANEL
5V SW
DSI
ILLUMI SW
E2PROM
RESET
MUTE
LOGIC
S-METER
MD RECEIVER
to CD or MD PLAYER UNIT (X32- or X33- )
RDS QUAL
TUN FUNC OUT
PWIC MUTE
PWIC STBY
PS1 3
RDS AFSL
100K
R371 4.7K
C600
L601
100u10
R590 10K
ILL D GND
P
AN5V
RT
R
Y
C
W
(LED+VFD)
FL+B
RST
5
6
2
3
4
1
C153
1
R153
R156 1K
TP156
TP154
TP155
TP153
R194
R152
TP152
TP151
TP510
41
42
43
44
45
TP431
∗
W152
R200
1K
R199
240
TP375
4
1
A2
A1
A0
3
2
SCL
WP
VCC
GND
SD
A
TP430
47K
R592
22K
5
8
6
7
10K
R436
10K
R453
47K
42
41
40
PS1 1
PS1 2
PS2 1
PS2 2
NC
BU DET
39
38
37
L602
C564 0.47
C568
270P
R2 100
R1 100
000kHz
CF54
46
47
48
49
50
51
52
53
C561 0.1
57
54
55
56
58
59
60
C586 1
C588 0.47
C512
10u16
100K
4.7K
R561
TP504
TP414
TUN ADJ
R438 1K
R437 1K
VOL MUTE
RDS DATA
ACC DET
VSS1
36
35
34
33
RESET2
32
31
30
29
LX REQ M
AUD SCL
AUD SDA
28
27
26
25
LX CON
LX RST
TUN SD
24
23
22
21
R432
4.7K
TP410
TP409
19
20
R439
∗
R431
2.2K
VCC
1
2
3
4
R456
GND
8
5
7
6
∗
R312
100K
∗
R313
SER
V
O+B
2
CD/MD MUTE L
14
CD/MD SD
A
CD LOS SW
CD DISC12
23
D-OUT
CD/MD SCL
21
CD/MD MUTE R
A
UDIO+B
GND
17
Lch
19
Rch
15
20
24
22
TP351
TP353
TP352
18
16
TP356
TP355
TP354
TP358
TP357
DGND
CD/MD LOE LIM
SW
CD/MD MST
OP
CD/MD MRST
11
13
B
U5V
9
CD MO
T
O
R
CD LOEJ
D5V
5
D5V
DGND
7
3
8
12
10
TP360
TP359
TP362
TP361
6
4
TP365
TP364
TP363
TP367
TP366
0.47u50
470
470
R352 2.2K
R351 2.2K
R370 4.7K
0.47u50
R363 4.7K
R358 2.2K
∗
R357 2.2K
R356 1K
R355 1K
R353 1K
SER
V
O
1
TP369
TP371
TP374
TP373
TP372
R360 2.2K
R359 100
∗
R470
TP432
∗
R450 470
∗
R451 470
∗
R452 470
TP406
TP405
TP407
CD LOS SW
54
53
52
51
50
49
48
47
46
45
44
43
CD LOEJ
CD/MD LOE LIM SW
CD/MD MST
OP
CD/MD MUTE
NC
NC
CD DISC12 SW
CD/MD MRST
CD DISC8 SW
CD MO
T
O
R
CD/MD SCL
60
59
58
57
56
55
RESET
NC
KEY REQ
RDS CLK
OEM DISP D
A
T
A
OEM DISP CLK
OEM DISP CE
CD/MD SD
A
DSI
61
PON FL
REMOTE
62
63
64
C411
R441
47K
2.2K
100K
∗
R480
R96
∗
R366
R365 4.7K
∗
R364 4.7K
R367 100K
∗
C152 0.1
∗
R372 470
27K
R100
2.7K
C97
47u16
OUT
VCC
1K
R97
3.3K
100K
R99
NC
GND
CTL
5
3
1
R98
C96
0.47u50
4
2
DC ERR
LINE MUTE
RO
T
A
R
Y
C
W
A
VSS
TUN TYPE1
TUN TYPE2
AV
REF1
VFD D
A
T
A
F
VFD D
A
T
A
S
VFD CLK
VFD RST
VFD CE
RO
T
A
R
Y
CCW
TDF DET
PWIC BEEP
LX D
A
T
A
S
LX D
A
T
A
M
LX CLK
XT1
LX REQ S
X2
VSS0
VDD1
65
66
67
68
X1
TEST
XT2
69
70
71
72
RDS NOISE
TUN SMETER
TYPE 2
VDD0
AVDD
TYPE 3
73
74
75
76
TYPE 1
77
78
79
80
16
17
18
13
14
15
10
11
12
7
8
9
R433
2.2K
4
5
6
1
2
3
R440
47K
W365
10K
10.000MHz
X1
18P
C422
R457
∗
R412
22P
22K
∗
R414
22K
∗
R416
22K
C420
1000P
∗
R411
∗
R471
22K
∗
R413
22K
∗
R415
22K
10K
TP411
22K
R417
22K
R418
L61
4.7uH
C409
100u6.3
C410
0.01
TP408
TP404
53
54
52
55
45
46
51
47
50
48
49
R
L
C2
C1
60
3
470K
470
10
RR
21
1
80
19
R435
R589
2.2
R600
0.01
C562
10u10
C556
R
L
53
47
48
46
45
52
50
49
51
55
54
41
42
39
40
38
1
4
3
NC
VDD
2
VSS
OUT
65
63
60
79
64
X2
32.768KHz
C408
C407
100P
0.22
1
1
80
9
14
12
13
10
11
8
18
17
16
3
22K
24
23
22
21
2
0.01
C201
19
66
27
29
R454
4.7K
34
32
+5V
SER
V
O+B
FL+B
+5V
+5V
+8V
SW5V
SW5V
+8V
+8V
SW5V
7
35
36
LED+B
SW
SW
CD DISC8
GND
79
2
2
15
43
3
3,43
C565
W826
R368
R369
R562 10M
PIN No.
48
54
49
PIN NAME
MD LOAD
MD EJECT
MD LOS EJE SW
MD LOS EJE
MD EJECT
MD LO
AD
+
+
+
+
+
+
+
+
E
C
B
2SB1565
DTA114EE
DTC143TUA
2SA1576A
2SC4617
2SD1858
2SC4081
DTA124EUA
