37
KDC-BT6544U/BT6544UY
/BT7043U/BT742U
X16-6500-21 (1/2)
Z
AA
AB
AC
AD
1
2
3
4
5
6
7
5V
0V
0V
5.0V
5.0V
11.4V
0V
2.6V
1.1V
5V
0V
0V
11V
0V
0V
11V
0V
11V
0V
11V
0V
5V
5V
0V
0V
5V
0V
5V
11V
0V
0V
11V
11V
0V
IC2
A
SWITCH UNIT (X16-6xxx-xx)
KDC-BT6544U/BT6544UY/BT7043U/BT742U (2/2)
Q24
Q23
Q22
Q20
Q21
Q5
ED1
S3
S1
J1
J4
J3
1/2
J520
X34-
RESET
S
I
Q
Q
Q
Q
D
D
D
D
D
D
CONTROLLER
REMOTE
PAN
5V
KEY SCAN
ADJUSTMENT
GRID REVERSING
USB
AUX
D120
∗
D111
∗
CN1
Q52
Q51
Q53
S11
S10
S13
S12
S18
S19
S14
S15
S16
S17
∗
D57
∗
D54
D51
D53
D62
D60
D64
D52
D65
∗
D55
∗
D58
D61
D63
∗
D56
∗
D59
FAVORITE
SEARCH
AUTO
SRC
EJECT
TIMING
DRIVER
LEFT SUB-ILLUMI
CONTROLLER
CONTROLLER
CENTER 3-KEY ILLUMI
CONTROLLER
RIGHT SUB-ILLUMI
BLUETOOTH
MIC
D114
∗
A
VCC
3
4
1
2
C8
1
2
VOUT
1/2W
1/2W
D GND
TP31
CP11 100
R81
22K
R20
100
1
47K
CP10 100
ROW5
R74 30
R75 30
PGND
LGND
F+2
F+1
2
1
4
3
OSCI
G1 1
VH
6
5
VDD
8
7
12
10
INT
IC1
9
IC2
11
28
20
ROW1
ROW2
ROW3
ROW4
G2 1
16
15
14
13
IC3
19
18
17
IC4
GRID1
GRID2
GRID3
24
23
22
21
IC5
IC6
27
26
25
ILL2
ILL3
G3 1
36
RESET
32
31
30
29
IC7
SW5
ILL1
35
34
33
DIO
IC8
G3 2
CLK
COL4
COL3
COL2
40
39
38
37
COL1
CS
IC9
43
42
41
G2 2
IC10
GND2
GND1
3
4
TP30
KS3
KS2
KS1
KI1
KI2
KI3
KI5
KI6
ESD GND
D GND
COL6
COL5
47
46
45
44
G1 2
IC11
49
48
F-2
F-1
AM-
AUD
COM
FM+
B
A
KEY MATRIX (09TDF BASIC)
SRC
AR
AL
2.2K
R80
D+
D-
KS1
KS3
KS2
KI1
KI6
KI2
KI3
KI5
USB D+
RESET
3
1
2
FL+B 16
RTRY CW
ILL+B
VFD RST
ILL D GND
AUX L
AUX R
AUX GND
MIC P
PAN 5V
USB GND
USB D-
USB 5V
10
5
4
6
9
7
8
13
11
12
15
14
MIC N
PAN DET
VFD CE
VFD CLK
RTRY CCW
VFD INT
VFD DATA
REMO
22
19
17
18
21
20
23
24
13
18
15
17
D-
AR
AL
D+
19
20
0.01
C32
100K
R17
100
R15
1
2
3
R21 100K
19
21
20
CP14
ESD GND
13
15
18
17
C10 0.1
R10 100K
W1
TP1
TP2
TP4
TP3
TP5
TP7
TP6
TP8
TP10
TP11
TP9
TP14
TP12
TP13
TP16
TP17
TP15
TP18
TP19
TP20
TP21
TP22
TP23
TP24
LEFT 2 KEYS
TRIANGLE
LEFT SUB-ILL
DISC GUIDE
RING-ILL
CENTER BOTTOM
3 KEYS
AROUND the AUX/USB JACK
RIGHT SUB-ILL
DISC GUIDE
EJECT KEY
∗
R52
∗
R53
2.2K
R61
2.2K
R62
2.2K
R60
12K
R57
12K
R58
12K
R59
ILL1
ILL2
ILL3
1.2K
R51
1.2K
R63
1.2K
R54
1.2K
R55
1K
R56
TP57
TP47
TP46
TP56
TP55
TP45
TP40
TP41
TP50
TP51
TP52
TP42
TP53
TP44
TP54
21
(CENTER)
(LEFT)
(UPPER)
(LOWER)
(RIGHT)
AG
AG
1000P
C102
0.01
C104
10K
R120
10K
R118
10K
R117
10
R123
10
R122
10
R121
1000P
C103
TP61
TP60
33P
C106
33P
C105
R13 100
0.1
C31
R124 22
R125 22
ILL1
ILL2
ILL3
2
1
MIC N
MIC P
Q22-24
Q20
Q51
Q52
Q53
TP43
ROW4
ROW5
ROW2
ROW1
ROW3
FAVORITE
COL1
SEARCH
AUD
COL2
AUTO
AM-
COL3
PANEL
DETECT
COL4
COL5
EJECT
FM+
COL6
1000P
C27
4a
4a
5a
4a
3a
2a
1a
3a
2a
1a
3a
2a
1G
2G
3G
2G
1G
1a