33
KDC-BT6544U/BT6544UY
/BT7043U/BT742U
X34-629x-xx (2/5)
J
I
H
G
F
0V
5V
0V
5.0V
5V
0V
5V
0V
0-5.0V
5V
0V
3.4V
5V
0V
0V
5V
5.0V
1.6V or
0V or
5V
0V
0V
5V
0V
5V
2.5V or 5.0V
5V
0V
0V or
5.0V
0V
5V
0V
0V
5V
0V
5V
5V
0V
0V
5V
0V
5V
5V
0V
5V
0V
0V
5V
0V
5V
5V
0V
5V
0V
0V
5V
0V
0V
5V
0V
5V
5V
0V
0V
5V
5V
0V
0V
5V
5V
0V
5V
0V
0V
5V
0V
5V
5.0V
0V
12.MHz
32.768kHz
0V
5V
0V
0V
5V
0V
5V
0V
5.0V
0V
5V
∗
IC302
IC301
6 9
7
9
6
3
5
7
27
10
2
2
8
1
4
1
4
8
1
8
4
10
10
10
12
13
14
12
13
14
14
13
12
27
27
27
27
7
15
16
15
16
11
11
11
17
1
13
13
1
13
1
18
18
20
u-COM
SYSTEM
RESET
CONTROL
SYSTEM
u-COM
R326 4.7K
R324 4.7K
TP308
TP312
0.1
TP311
C75
R318
47K
100K
43
83
4
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
∗
R314 22K
TP306
R313 1K
12.000MHz
X300
TP300
C303
18P
TP305
C302
22P
C305
R311 47K
1
R319
32.768kHz
X301
TP307
47K
10K
PON AM
32
VFD CLK
ROT
AR
Y CW
VFD DA
TA
TUN SDA
TUN SCL
PWIC
26
29
28
27
31
30
RDS DATA
V SYNC
NC
RDS QUAL
RDS AFS M
TUN IFC OUT
ROT
AR
Y CCW
DFZ MUTE
ROMCOR DET
PON D5V
BT BT DA
TA
BT SYS DA
TA
VFD RST
35
34
33
NC
NC
37
36
PDN
NC
40
39
38
42
41
NMI
PANEL DET
RDS CLK
LX REQ S
VCC1
XIN
VSS
B MECHA DATA
8
XOUT
RESET
XCOUT
XCIN
9
CNVSS
B MECHA CLK
BYTE
7
6
5
R300
2.2M
∗
R631
4
3
1
2
NC
VIN
VOUT
VSS
∗
CP301 100
∗
R332 2.2K
R331 2.2K
∗
CP303 100
94
95
96
97
98
99
100
LX CLK
B SYS DATA
LX REQ M
REMO
3
2
1
LX DA
TA
S
LX DA
TA
M
A
VCC
LX RST
VREF
C306
1
84
85
86
87
88
89
90
92
93
MUTE PRE SW
RDS NOISE
TUN SMETER
LX MUTE
91
LX CON
A
VSS
MUTE AFS
MUTE PRE FR
MUTE 1
MUTE 2
MUTE 0
TP309
TP310
72
CD LOE LIM SW
CD LOS
CD MUTE
S MECHA REQ
MECHA RST
SRAMSTBY
CD
VFD INT
BT RST
VFD CS
49
46
NC
45
44
NC
48
47
PON
50
100
51
52
53
54
55
56
S SYS REQ/MDSP CE
PON ILLUMI
VCC2
DRV MUTE
VSS
TYPE 1
TYPE 2
NC
CD LOEJ
CD MOTOR
NC
NC
NC
ILLUMI DET
ACC DET
C310
CP307 100
57
58
59
60
61
62
63
64
1
68
65
66
67
69
70
71
∗
R353
∗
R355
∗
R354 47K
∗
R352
BU DET
ANT CON
P CON
76
77
78
79
80
82
PWIC STBY
LINE MUTE
ST DC DET
E2P SDA
E2P SCL
DC DET
81
PWIC SVR
PWIC MUTE
TP313
TP314
73
74
75
R349
2.2K
4.7K
CP305
TP315
TP316
C314
∗
C313 47u6.3
1
TP317
TP193
4.7uH
L300
330
∗
CP304 100
R342 100
R348 470
R343 100
R320 33K
41
40
100K
R333
330
R334
100
R336
48
46
44
42
470
R337
32
31
29
30
R327 100K
R328 3.9K
CP302
R335 3.9K
45
34
33
MECHA STOP/CD PON
∗
R344 100
470
R351
0.01
C312
CP310
470
R350
0.01
C311
CP308
DISK12
47K
∗
R359
2.2K
R357
47K
R358
66
67
57
50
51
53
52
55
54
56
58
61
CP306
100K
∗
R330
100K
∗
R325
1000P
C307
89
88
84
85
86
87
83
100
98
99
92
95
93
91
90
SDA
SCL
∗
R321 100K
77
78
79
80
47K
R340
47K
∗
R630
R302 10K
5
4
3
17
22
20
21
19
23
C300 0.1
2.2K
R315
∗
R307 100K
1K
R317
100
71
72
75
74
PON P
ANEL
∗
R305 100K
C301 0.01
2.2K
∗
R308
4.7K
∗
R309
∗
R316 100
100K
∗
R304
16
2
100K
∗
R323
1
18
47K
R306
100
∗
R312
BEEP
37
49
59
47K
R356
100K
R338
FSD
FSC
1K
R341
PON5V
BU5V
SW
SW
26
BU5V-1
PON5V
PON5V
PON5V
PON5V
R303 100K
100K
R361
22K
R360
73
+