32
KDC-BT6544U/BT6544UY
/BT7043U/BT742U
X34-629x-xx (1/5)
A
B
C
D
E
1
2
3
4
5
6
7
2.4V
5.0V
0V
0V
5.0V
4.332MHz
0V
5V
IC500
IC300
ELECTRIC UNIT (X34-6xxx-xx)
A
1
4
3
2
5
1
2
3
5
4
2
3
4
5
5
6
7
8
9
7
7
6
6
8
9
6
8
8
5
5
7
10
1
8
4
2
2
27
27
SW
Q520
PAN5V
D534
D533
D532
J520
DECODER
RDS & RBDS
MEMORY
E2P
∗
D421
W481
ANT.
Q480
Q481
SW
AM+B
D441
Q441
DRIVER
PRE OUT
MUTE
D461
Q461
MUTE SW
(SUB(+REAR))
Q442
Q440
PRE OUT
MUTE SW
(FRONT)
Q450
Q451
PRE OUT
MUTE SW
(REAR)
Q460
Q462
PRE OUT
PRE OUT
∗
J420
WH160
REMOTE I/F
OPEL I/F
∗
B
∗
A480
∗
A481
FRONT-END
∗
C
NOT USED
X16-
J1
2/2
FRONT-END
47u6.3
C522
R537 1K
C503
270P
R500
5.1K
FILOUT
NU
GND
OSEL
MPX
VREF
RDDA
QUAL
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
R520 1K
R524 100
R523 100
R526 1K
R525 1K
R
TR
Y
CW
MIC N
PAN DET
MIC P
R528 100
R527 100
VFD DA
TA
R
TR
Y
CCW
VFD CS
REMO
FL+B
VFD CLK
ILL DGND
VFD INT
PAN5V
AUX LCH
ILL+B
2.2
C502
0.1
C500
8
7
6
5
TP500
4
3
2
1
1
2
3
4
5
6
7
8
9
TP541
TP539
TP538
TP540
TP542
AUX GND
RESET
AUX RCH
USB GND
USB D-
VBUS5V
ESD GND
VFD RST
USB D+
TP543
FSEL
C505
0.01
OSCIN
EXTRES
TM
VS
9
10
11
12
OSCOUT
RDCL
T57
13
14
15
16
R505
1K
C507
18P
C506
18P
3
3
25
IFGND
2
L
1
IF+B
25
L
IFGND
IF+B
2
1
SMETER
PLLGND
COM+B
RDSOUT
D-GND2
QUALITY
STDGND
RDSMUTE
AMIFOUT
11
10
7
D-GND2
STDGND
RDSMUTE
6
4
5
R
SMETER
QUALITY
AMIFOUT
8
9
RDS
18
17
16
15
14
13
12
VDD5V
PLLGND
D-GND
SCL
COM+B
VT
IFC
SDA
11
7
R
6
4
5
10
8
9
0.01
15
SCL
VDD5V
D-GND
14
13
12
VT
IFC
SDA
18
17
16
C484
C483
0.01
C304
0.01
ANTINPUT
RFGND
OSCGND
24
22
23
19
20
21
ANT IN
AM+B
OSCGND
NC
RFGND
26
2
3
AM+B
NC
22
19
20
21
26
24
23
C482
0.01
W480
1
R483
R482 820
22K
TP498
330
10u35
R441
C440
330
10u35
TP440
330
R445
C443 10u35
R451
C450
Q441,461
R455
330
C453 10u35
R461 330
C460 10u35
C463
180
C441
1000P
R440 180
R443
C442
1000P
R442
22K
22K
180
R444
R450
Q440,442
R452
22K
C451
1000P
R453
22K
R454
180
C452
1000P
Q450,451
R462
22K
1000P
R460 180
C461
R463
22K
C462
1000P
Q460,462
TP422
TP421
TP420
TP424
TP426
TP425
TP423
R465
330
10u35
R464
180
R160
470
1
CP300
100
10
R536
0.47
C525
10
R534
10
R531
0.47
C520
46
44
MN
18
42
30
MP
29
31
TP520
TP525
TP524
TP523
TP526
TP522
TP521
TP536
TP535
TP534
TP533
TP537
TP527
TP529
TP528
TP530
TP531
TP532
AUR
AUG
AUL
100
∗
R521
100
∗
R522
0.22
C530
48
4.7
R529
1K
R530
BU5V
ILL+B
V5V
DP
DN
PNR
PNL
PFL
PFR
TP460
PRL
PRR
0.01
C485
TP495
TP497
TP480
TP483
9
6
11
15
17
16
91
90
FSC
FSD
21
20
TP492
TP491
TP490
TP488
TP487
TP486
3
4
16
17
15
11
9
6
15
16
17
11
9
6
3
4
TP494
TP493
TUL
TUR
3
4
TP482
TP484
TP481
22
19
10
22
19
10
19
22
10
TP489
TP485
TP496
AGND
CP501
2.2K
X500
4.332MHz
470
R480
470
R481
SCL
WP
VCC
SDA
6
5
7
8
A2
A0
GND
3
4
2
1
A1
TP301
TP304
FSC
FSD
TP303
TP302
22
17
23
89
88
19
1
16
2
1
18
PON5V
A8V
32
BU5V
-1
BU5V-1
PON5V
PON5V
A8V
2.2K
R538
D5V
+
+
+
+
+
+
+
A481: For other models
A480: For European models
FRONT-END