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17
KDC-MP225,MP4026/G
KDC-W4527/G/GY/Y,W427Y
J
I
H
G
F
X25-998x-xx/X34-3172-70 (2/3)
14.4V
0V
0V
2.3V
5.0V
0V
12.8V
0V
5V
0V
5V
4.9V
0V
5V
0V
5V
0V
5V
0V
0-5.0V
0-1.4V
0.6-4.1V
0V
0V
5V
5V
0V
4.9V
0V
0V
5V
0V
4.9V
0V
4.9V
4.9V
0V
0V
5V
5V
0V
0V
5V
5V
0V
4.9V
0V
5V
0V
0V
5V
0V
4.9V
5V
0V
5V
0V
5V
0V
0V
4.5V
0V
4.9V
5V
0V
0V
5V
0V
0V
6.7V
6.7V
0V
4.9V
0V
0V
14.4V
0V
14.4V
6.7V
0V
0V
4.4V
0
5
4.9V
0V
5V
0V
0V
5V
5V
0V
0V
5V
0V or 5.0V
5.0V
0V
0V
5V
3.5V
0V
IC4
IC6
∗
IC1
IC9
N2
D310
D311
J2
D308
D309
D307
D301
Q252
D252
D254
D256
D258
D41
Q41
Q3
D4
Q2
D5
Q1
D31
D2
D3
Q24
D21
Q22
Q21
D251
D257
D255
D253
J1
BU DET
SERGE
MUTE
D271
D269
D270
J3
SW14
SERVO
CD
MECHA +B
SYSTEM
MICROPROCESSOR
MUTE
DRIVE
AUDIO
IC
POWER
DC IN
LINE
ACC DET
DET
∗
H
∗
C
LX-BUS
to CD MECHANISM ASSY
∗
A
4.7
CD LOE LIM SW
CD DISC8 SW
CD DISC12 SW
14
R54 1K
D-OUT
2
1
A
UDIO+B
(SW1)
CD LOS SW
(SW2)
CD-SD
A
CD-SCL
5
4
3
8
7
6
Rch
GND
Lch
CD MUTE L
CD MUTE R
11
10
9
13
12
R51 2.2K
R52 2.2K
R53 1K
CD LOEJ
(SW3)
19
CD MST
OP
CD RST
(SW4)
16
15
18
17
DGND
DGND
B
U5V
D4.5V
D4.5V
22
21
20
24
23
SER
V
O+B
CD MO
T
O
R
SER
V
OGND
R58 2.2K
R66 4.7K
R65 4.7K
∗
R64 4.7K
R63 2.2K
R432
10
9
12
11
C302
R352
C352
10u16
270
C356
0.1
R358
100
C303
47u10
MUTE
REQ M
GND
CON
B.
U
.
Rch
A GND
RST
4
8
2
3
6
7
1
5
0.47
C301
0.47
D
ATA
M
D
ATA
S
Lch
CLK
REQ S
13
R251
33K
R273
470K
R272
10K
R271
100
C256
C255
1u50
R252
47K
MUTE
NC
40
39
38
37
49
48
47
46
45
44
43
42
PS2 0
41
PS1 2
PS1 1
PS1 0
PARK SW
BU DET
PS2 1
CD MUTE R
CD DISC12 SW
PON CD
NC
PON 5
RESET
KE
R
LX
60
59
58
57
56
55
54
53
52
50
CD MUTE L
CD LOS SW
CD DISC8 SW
CD MRST
51
NC
CD MO
T
O
R
CD LOEJ
CD LOE LIM SW
CD MST
OP
DSI
A
UX ON
RDS Q
U
AL
RDS D
A
T
A
PWIC BEEP
LX D
A
T
A
S
LX D
A
T
A
M
LX CLK
TUN SCL
TUN SD
A
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
LX MUTE
PWIC MUTE
RESET2
ACC DET
VSS1
PWIC STBY
PWIC SVR
LX REQ M
SCL
LX CON
LX RST
NC
RDS AFS
TUN IFC OUT
SDA
17
20
18
19
15
16
12
13
14
TUN SMETER
RDS NOISE
LINE MUTE
L RST
A
VREF1
L D
ATA
L
L D
ATA
S
L CLK
TDF DET
TUN
TUN
6
9
10
11
7
8
A
VSS
L CE
4
5
1
2
3
C43
220u16
L12
220uH
R44 47K
0.22
100u25
100u25
VIN
GND
ON/OFF
4
2
VO
S
SW
OUT
R43
47K
R41
47K
5
1
3
47K
C45
R42
C42
C41
R31 10K
R7
3
A1
Y1
2
1
Y2
B1
5
4
12
Y4
VCC
13
14
Y3
A4
B4
10
11
100K
C5
0.01
R10
10K
C4
0.01
R11
22K
100K
R3
39K
R2
R6
10K
1000P
C3
R5
10K
R4
20K
R32 22K
R1
68K
R33
47K
C21
47u16
C19
R21
0.47
1.5K
REAR L+
8
33u10
0.22u50
0.22u50
0.22u50
0.22u50
C257
1u50
C258
1u50
A
CGND
OUT1-
SGND
OUT1+
OUT2-
OUT2+
7
RR-
RR+
TA
B
1
3
5
FR-
FR+
11
9
IN1
13
PGND1
6
4
8
2
PGND2
STBY
VCC1
14
16
10
12
SVR
IN2
IN4
OUT3+
OUT3-
OUT4+
OUT4-
RL-
FL+
FL-
RL+
19
IN3
15
17
23
21
25
HSD
24
22
18
20
PGND3
MUTE
VCC2
PGND4
FR
ONT L+
FL+
9
3
5
4
6
7
FR+
FR
ONT R+
FR
ONT R-
FR
ONT L-
RL-
RL+
FL-
FR-
RR-
REAR L-
REAR R-
RR+
REAR R+
P-ANT
P-CON
12
10
11
13
14
TP51
TP55
TP53
TP54
TP52
TP60
TP57
TP58
TP59
TP56
TP64
TP62
TP63
TP61
TP66
TP67
TP65
TP72
TP71
TP69
TP74
TP73
TP307
TP306
TP304
TP301
TP305
TP311
TP310
TP309
TP308
TP312
TP313
TP303
TP302
C31 0.01
C251
C252
C253
C254
TP2
TP1
TP5
TP3
TP4
TP7
TP6
TP9
TP8
TP11
TH1
4.3K
R257
10
R254
4.3K
R253
+
220
R255
22K
R256
4.7K
R308
4.7K
R305
4.7K
R309
100
R311
100
R310
4.7K
R307
10
R301
10
R302
4.7
R306
4.7K
R304
100
R303
R312 100K
100K
R313
100K
R315
100K
R314
R61 100K
R62 100K
R430 47K
R431 47K
47
52
48
53
50
55
51
56
57
58
SD
A
SCL
1K
R55
1K
R56
2.2K
∗
R57
100
R59
2.2K
R60
TP606
TP608
TP607
TP609
TP605
TP604
TP603
TP602
TP601
TP600
9
11
10
8
5
6
63
14
13
20
19
16
17
18
24
23
22
28
27
26
29
40
39
41
42
44
37
35
36
31
32
60
27
29
R
G
FR
RL
RR
FL
FR
15
2
21
38
64
1
34
+
+
43
46
46
47
48
58
50
51
52
53
55
56
57
64
26
17
18
16
28
35
15
32
31
34
+
+
+
+
+
+
+