35
KDC-BT7539U/BT8041U
/BT8141UY/BT838U
X16-638x-xx (1/2)
Z
AA
AB
AC
AD
1
2
3
4
5
6
7
5V
0V
0V
0V
5V
5.0V
5V
0V
5V
0V
0V
0V
0V
5.0V
5.0V
0V
5V
0V
5V
0V
5V
5V
0V
5V
0V
5.0V
0V
5.0V or 0V
0V
0V
5.0V or 0V
0V
0V
5.0V
5.0V
0V
5V
5V
0V
5.0V
0V
0V
5V
∗
IC1
IC4
IC3
(X16-638x-xx)
S6
S5
KEY MATRIX
D40
S1
D16
D9
D11
D7
D2
D3
D1
S8
S7
J1
ATT
MENU
TI/AUTO
S3
S4
S2
EJECT
SRC
ROM COR
REMOTE
CONTROL IC
TRIANGL
LED SW
Left of VO
BLUE LED
BLUE LED
Under FL
Top on FL
BLUE LED
(MULTI KE
BLUE LED
PANEL
u-COM
ATT KEY
1/2
J681
X34-
NOT USED
∗
A
REMO
NC
FL SI1
NC
FL CLK
BYTE
CNVSS
NC
NC
RESET
XOUT
VSS
XIN
VCC1
NMI
NC
NC
NC
NC
LED CONT RTY2/BLUE
NC
FL BK
FL LAT
LED CONT
NC
GND2
100P
72
AUD
ESD GND
C45
100P
CP17
1K
ESD
TP76
R80
47K
22K
CP16
CP15
1K
VOL
VOL
TP42
TP41
CP1 3.3K
TP43
NC
KS3
KS2
KS1
77
76
78
NC
KR1
KR2
NC
75
74
73
NC
NC
NC
NC
NC
KS5
KS4
80
79
82
81
84
83
86
85
C86
100P
A
VSS
SA IN
SA CLK
SA RST
NC
NC
NC
NC
88
87
90
89
92
91
94
93
NC
NC
NC
A
VCC
VREF
NC
96
95
98
97
100
99
C85
0.01
CP14 3.3K
CP13 3.3K
R79
47K
LED CONT
NC
NC
PAN DA
TA
SYS DA
TA
SYS REQ
PAN REQ
FL SI2
NC
CLK IN
NC
NC
NC
ROMCOR DET/EPM
NC
NC
NC
NC
FLASH CE
NC
NC
LED CONT TOP
LED CONT TRI
NC
NC
NC
SC CON
NC
NC
NC
NC
69
71
70
68
67
NC
NC
NC
VSS
NC
66
65
64
63
62
61
55
VCC2
ROTRY1 CCW
ROTRY1 CW
ROTRY2 CCW
ROTRY2 CW
NC
58
60
59
57
56
NC
NC
SCL
SDA
54
53
52
51
49
50
48
46
47
44
45
42
43
40
41
TP75
100K
38
39
36
37
34
35
32
33
TP74
30
31
28
29
26
27
CP12 100
R78
CP18
47K
DGND
0.01
C91
GND
A2
A1
A0
3
4
2
1
GND1
4
R68
TP33
C66
47K
1
3
4
TP71
C46
ESD GND
DGND
3.3K
TP52
TP51
TP45
TP44
CP2
47nH
47nH
1
2
3
100
L2
L1
R71
100
R72
C71
18P
C74
C72
33P
68P
TP1
PAN GND
PAN RST
PAN5V
SA CLK
ILL+B
1
3
2
5
4
TP2
TP4
TP3
TP5
PAN REQ
SA OUT
SA RST
RESET
SYS
DA
TA
7
6
9
8
10
TP7
TP6
TP8
TP10
TP9
7
5
6
8
9
10
12
11
13
14
15
R74
12.000MHz
1K
TP72
100P
C77
21
18
16
17
19
20
22
23
24
25
47K
CP19
X1
CP11
100
R2 2.2
VOUT
VCC
1
100
2
R69
R67
100
470
R12
330
R1
470
R3
470
R10
470
R5
470
R7
KS5
KS3
KS4
KS1
KS2
KS
KR
KR1
KR2
AUDIO
N/A
ATT
TI
MENU
FM
PLAY
AM
KS5
KS4
KS3
KS2
TP48
TP49
TP47
TP46
KR1
KR4
KR2
KS1
TP50
KS1
KS2
KS3
KS4
KR1
KS5
KR4
KR2
UNDER/RED
26
24
92
91
93
30
32
R
TY1/GREEN
GND
59
58
57
56
52
51
48
47
20
57
58
59
56
470
R6
Q3
Q4
Q5
Q6
30
29
31
32
22
23
33
15 17
71
91
92
93
10
47K
R52
3
5
10
10K
R76
0.1
C76
PAN5V
PAN5V-1
PAN5V
-1
PAN5V
ILL+B
2
1
1
2
1
2
2
3
3
3
3
4
5
4
4
5
5
6
6
6
7
7
7