26
KDC-BT40U/BT645U
KDC-U546BT
X34-662x-xx (3/4)
K
L
M
N
O
1
1
17
17
22
1
17
1
22
19
15
15
19
1
2
1 2
1
10
10
13
13
14
14
14
15
15
15
3
3
17
18
18
18
18
18
18
18
18
19
19
19
19
19
20
20
20
20
21
22
22
22
TP903
TP372
TP373
TP374
TP904
TP905
TP909
TP902
TP910
TP907
TP906
TP911
TP912
TP913
TP915
TP914
TP908
TP900
TP901
C802
0.22
C804
0.22
R812
0
TP315
15
RL-
OUT2-
OFFDET
R809
1K
4
2
89
90
3
PWRGND1
1
TAB
S-GND
OUT1-
OUT2+
OUT1+
IN1
10
8
FL-
6
RL+
RL
C801
0.22
14
12
FL+
PWRGND2
9
VCC1
5
STBY
7
13
IN2
11
SVR
87
OUT4-
IN3
OUT4+
OUT3-
OUT3+
20
RR
C803
0.22
RR+
18
16
FR-
22
FR+
RR-
24
19
17
IN4
AC-GND
23
21
MUTE
PWRGND3
VCC2
CD
R810
1K
26
27
25
TAB
PWRGND4
R805
22K
FL,FR
RL,RR
28
R802 33K
1
C807
BU
C805
33u16
FL
C809
1
4.3K
R813
FR
1
10
R808
C806
R804
330
TP316
R806
6.2K
TH1
SW5V
83
47K
R811
47K
R803
TP2
0.1
C17
REAR L+
∗
C851 4700P
SRV+B
SW5V
Q2,3
Q11,12
8
TP1
FL+
FRONT L+
9
∗
C852 4700P
∗
C853 4700P
∗
C854 4700P
∗
C855 4700P
∗
C856 4700P
∗
C857 4700P
∗
C858 4700P
0
∗
R151
R119
C102
C2
R1
22u16
0.01
BU
10K
47K
R118
R112
100K
R114 10K
10K
R115
4
47K
R111
0
R113
TP18
TP17
68K
R110
5
6
7
TP5
TP4
TP3
REAR L-
RL-
FR-
RL+
FL-
FRONT R-
FRONT L-
TP8
TP6
TP7
FR+
RR+
REAR R+
FRONT R+
REAR R-
RR-
11
10
12
4
P-ANT
4.7K
R102
TP12
TP11
P
-CON
REMO
∗
R152
13
80
0.01
C105
1K
R117
6.8K
5
USB5V
LED+B
C14
0.1
SW5V
6
C64
220u10
FL+B
70
R2 10K
C7
220u16
C5
R62 22K
EN
3
4
OC
GND
2
VIN
1
5
VOUT
C59
7.5
1/2W
R15
0.1
L73
BU
AU8V
0.1
∗
C4
C11
0.1
C3
0.1
C55
TP52
L51
10
∗
C58
10
22uH
R53
R54
15K
∗
C56
RUN
BOOST
8
7
6
10
9
∗
R57
∗
R55
TP54
82K
RT
VC
FB
PG
SYNC
0.47
C57
VIN
3
4
5
BD
1
2
SW
43K
∗
R56
C63
0.1
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
48
49
50
PON SWREG
FSEL
NC
AUD SCL
AUD SDA
ACC DET
BU DET
NC(PS2 2)
PS2 1
PS1 3
PS1 2
PS1 1
PON FL
BT RST
NC
NC
NC
VSS
NC
VCC2
CD LOE LIM SW
SOC S STOP
CD LOEJ
CD MOTOR
CD DRIVEMUTE/NC
/CD CCE
SOC RST
SOC MUTE
CD DISC12 SW
CD SRAMSTB/NC
S SOC REQ
CD LOS SW
47K
R58
0.1
C69
33K
R59
4.7K
R282
4.7K
R281
100
R275
100
∗
R274
R268
2
CP201 100
SDA
SCL
79
78
71
70
69
68
59
58
57
56
55
100
CP202
470
54
53
52
73
74
48
49
50
51
3
/CD PIO0
S SYS REQ
/CD MRST
/CD MUTE
/PON CD
3
2
1
CD MOTOR
SER
VO+B
SER
VOGND
SR
V+B
R301
2
.2K
56
6
5
7
8
V+
V-
3
4
2
1
100P
C908
47K
R911
1
C911
22K
R913
22K
R912
1
C910
47K
R910
100P
C907
0.1
C904
10
C906
10K
R906
10K
R905
2.2
R903
SP-
SP+
fc = 25kHz
VOUT
1
2
VIN
GND1
3
0.33
C915
22
C914
1000P
∗
C923
100
R278
4.7K
R279
330
R916
47K
R918
180
∗
L900
47K
R919
100
R935
C922 0.1
1000P
C918
330
R915
0
∗
R936
10u35
∗
C912
330u6.3
C916
0.1
C913
4.7K
R920
GND
GND
GND
GND
1
2
3
4 5 6 7 8 9
10 11 12 13 14
U1IN
U1OUT
VCC
VSS
SPK1P
MIC1P
SPK1N
MIC1N
VSS
VCC MIC
NBOOTS
NRST CPU
U3IN
U3OUT
SP-
SP+
MIC-
MIC+
33
34
23
SW5V
BU5V
AU8V
BU5V
SW5V
B1
9B1
B3
9B3
9B1
73,74
79
78
BU5V
SW5V
SW5V
SW5V
FL+B
BU5V
BU5V
BU
Q901
Q902
IC901
1
2
3
4
+
+
+
+
+
+
IC1
:
∗
IC2
: E-TDA7718N
IC4
: BD49131-V4
IC6
: E-TDA7851A
IC7
: E-TDA7478AD
IC8
: XC6120N362N-G
IC51 : See parts list.
IC52 : BD2224G
IC501 :
IC900 : NJM4565V-ZB
IC901 : SI-3033KMSA
Q2
: KTA1046-P
Q3,101-103 : 2SC4081
Q11,13,901 : RT1N241M-T111
Q12,14,707 : RT1P241M-T111
Q53,104,105 : RT1N441M-T111
Q301
: RT1P144M-T111
Q701-706
: RT1N430M-T111
Q902
: UM6K1N
D1
: S2V60-50
D2
: HZS9-E(A
D3,101-104 : D1F60-50
D4,5,401,801,802
: HSS4148
D51
: CMS14
D106-108
: MTZJ6.8(
D109
: HZS5-E(B
∗
Q902
Q901
D801
Q105
MUTE
CONT
MUTE
D110
Q104
MUTE
CONT
Q10
Q11
D2
SERVO+B
AVR
CONTROL SW
for SERVO+B
SW 14
J1
MUTE
LINE
D109
SERVO
Q2
Q3
Q12
SURGE
BU DET
DET
Q102
D108
D107
P ANT
∗
C
D104
D103
D102
DC IN
+7.5V
SW
HI-SIDE
Q53
IC51
CONT
SW for
FREQ
CONTROL SW
∗
D5
∗
Q14
for IC4
∗
Q13
∗
D4
+5V
USB
D51
SW REG
∗
B
BUFFER
MONO
A900
CN900
BLUETOOTH MODULE
POWER IC
GND LINE
SIGNAL LINE
B LINE
BT MODULE
RESET CONTROL
LEVEL SHIFT
(5V
3.3V)
LPF
D+3.3V
AVR IC
0V
14.4V
14.4V
0V
7.0V
0V
0V
5V
7.2V
7.1V
5V
0V
5V
0V
0V
3.3V
5.1V
5.1V
3.3V
0V
3.3V
0V
0V
5.1V
0V
0.8V
1.0V
14.4V
5V
0V
0V
7.2V
0V
5V
0V
0V
5V
0V
5V
0V
5V
0 or 5.0V
0V
5V
5.0V
0V
0V
5V
5V
0V
0V
5V
V
V
5V
0V
0V
5V
0V
5V
V
V
0V
0V
4.1V
5V
5.1V
0V
3.3V
0V
4.3V
4.3V
8.6V
0V
5V
0.5V
IC900
IC6
IC52
IC51
IC901