24
KDC-237SA/237SAY
KDC-237SG/237SGY
A
B
C
D
E
1
2
3
4
5
6
7
2.5V
2.5V
5.0V
0V
5.0V
2.5V
5V
0V
5V
0V
IC
∗
I
∗
ELECTRIC UNIT (X34-46xx-xx)
Q703
Q704
Q705
CN4
FR
ONT
REAR/SUB
Q702
Q701
R
J5
L
∗
G
∗
D
A1
TUNER
UNIT
ANT
J2
∗
A
E
D605
D604
D603
D602
D601
CN3
D303
WIRED REMO
J4
D606
LX BUS
∗
I
∗
B
MUTE DRIVE
for PRE-OUT
PRE-OUT
MUTE SW
TP342
TP79
TP128
TP92
TP95
TP100
TP73
TP66
TP77
TP69
TP99
TP90
TP93
TP96
TP101
TP76
TP71
TP72
TP97
TP341
TP74
TP94
TP102
TP68
TP65
TP70
TP344
TP78
TP91
TP98
TP113
TP345
TP75
TP551
TP552
680P
C707
22K
R709
C708
22K
R710
180
R711
180
0
R959
330
R707
R708
C706
10u35
C705
1
2
3
L
GND
R
R712
330
10u35
680P
TP339
TP340
TP338
C704
R704
680P
180
R706
22K
680P
180
C703
R703
22K
C702
10u35
330
R701
R705
C701
10u35
0
R958
∗
R791
0
∗
W701
0
∗
R792
0
∗
R793
330
R702
FL
FR
RR
RL
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
RFGND
ANTINPUT
NC
AM+B
OSCGND
VT
COM+B
IFC
SDA
SCL
D-GND
VDD5V
PLLGND
SMETER
AMIFOUT
QUALITY
RDSOUT
D-GND2
RDSMUTE
STDGND
R
L
IF+B
IFGND
0.01
C502
0.01
C504
0.01
C506
0.01
C508
4.7K
R502
4.7K
R504
470
R501
470
R503
SDA
SCL
66
84
83
65
C510 0.47
C509 0.47
1
2
3
4
5
6
7
8
RD
RD
VR
M
VD
VS
FL
CI
10u35
C513
560P
C517
330P
C514
470
R403
SCL
SD
A
R612 4.7K
R611 100
R610 4.7K
R609 100
R608 100
R607 1K
R606 1K
R605 100
10
R602
4.7
R603
10
R601
0.47
C602
47u6.3
C603
0.47
C601
71
73
70
72
1
100
75
2
CH-R
CH-G
CH-L
0.01
C604
1K
R604
2
1
1K
R329
8
4
12
7
6
3
2
13
11
10
5
1
9
GND
BU
REQ M
CON
AGND
Rch
Lch
RST
DATA M
CLK
DATA S
MUTE
REQ S
GND2
SW5V
AM+B
AUDIO+B
R402 470
R969
R970
0
0
BU5V
BU
AU
Q701-704
+
+
+
+
+
+
1
3
6
6
7
X34-4672-78 (1/4)
2SB1565
DTC114YUA
2SA1576A
2SB1295-E
2SC4081
UMC2N
DA204U
DAN202U