V
W
U
X
Y
Z
AA
AB
AC
AD
KDC-X715
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
parts (refor to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage-
current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to tha customer.
29
96
R74 22K
R139 2.2K
SW2
D OUT
22
21
R137 2.2K
R138 2.2K
R89 100K
MOSW
MUTE L
MS CLK
MECH
MUTE R
SW1
MS DA
NC
BU 5V
D GND
M ST
OP
AUDIO +B
M RST
GND
Rch
Lch
LO/EJ
SER
VO
SER
VO
SW3
4
R143 100K
R144 100K
12
20
19
18
17
15
14
13
16
11
10
9
7
6
5
8
44
43
1
3
2
1
2
3
4
1
C37
6
2.2K
R1
18
50
47u6.3
32
98
7
51
99
31
43
35
49
L1 4.7uH
+
0.01
C34
C33
48
3
1
2
R76 47
R78 47
R77 100K
R79 2.2K
R80 2.2K
6
7
12.0MHz
32.768kHz
16
18
C36
24P
C35
X1
X2
27P
R82 100K
R83 100K
9
100
CHCON
CH MUTE
REQH
ILL
ON
CD SW2
CD SW1
1
2
3
4
5
6
7
8
SW5
97
99
99
100
R241
98
98
100
R242
MS DA
MS CLK
R95 4.7K
97
R96 4.7K
MUTE
SC REQ(KEY
REQ)
A
VDD
XT1
VSS
XT2
VDD
RESET
CH RST
R CLK
REQC
10
12
13
14
X2
X1
11
15
16
17
18
19
20
22
23
1K
R84
1K
21
R13
A
VREF0
PHONE(E)
470
0.01
25
C163
24
R90
100K
R14
26
SRM SW1
R92 1K
R114 160K
27
NOISE(E)
W20
C38 4700P
28
SMETER
R94 22K
IF MODE
W21
28
14
13
12
11
10
CR1
DGND
C62
0.01
24
23
AUX1 INR
SDA
28
VCC
1
AUX1 INL
26
SCL
27
3
MUTE
2
AUX2
HP FR1
6
23
+
1u50
C64
AGND
25
CR2
4
CREF
24
CL1
5
0.27
7
22
C69
HP FL1
0.27
CL2
21
HP FL2
0.27
8
AUX2
0.27
C73
C74
19
HP FR2
20
C70
HP
9
18
HP RL1
0.27
C71
HP
0.27
C75
0.27
C76
16
C72
17
HP RR1
0.27
HP RL2
HP
OUT
HP RR2
15
HP
5.6K
R73
95
95
R244 1K
96
SDA IC2
93
94
R70 1K
R71 4.7K
92
2.2M
R68
92
93
BU DET
TEST
P ON
5.6K
R72
87
34
35
DIMMER
88
90
R67 4.7K
R69 2.2K
90
91
89
89
ACC DET
REMO
P CON
R243 1K
R66 2.2K
87
88
SCK IC2
100K
R101
EX.AMP CON
31
30
MUTE R
33
32
AVSS
MUTE L
CP6 1K
31
32
AVREF1
35
M RST
34
R99 1K
36
35
SC DATA(L DATAL)
100K
L11
DATAH
37
DATAC
R100 1K
39
CH CLK
38
47
R102 47
38
37
39
R116 1K
40
R103
R104
79
C78 0.1
C80 0.1
C79 0.1
C77 0.1
83
85
86
86
84
83
85
P MUTE
ANT CON
SVR
81
82
80
79
80
VDD
RPRE MUTE
LPRE MUTE
FL
10
FR
11
RL
RR
77
78
R142 100K
76
R141 100K
ST TYPE1
ST TYPE0
TYPE2
TYPE1
TYPE0
FM+B
AM+B
VSS
46
MC CLK(L CLK)
MC DATA(L DATAS)
43
34
41
R117 1K
42
M STOP
41
43
42
44
BEEP
CP5 1K
45
PLL DATA
PLL CE
R105 2.2K
44
46
45
P
ANEL
5V
P
RST(LOCK SW)
MC REQ(L
CE)
SRM SUB-
NARROW
WIDE
FM SD
SRM SW2
SRM DET
SRM SUB+
AFC
R DA
T
A
QUAL
DIM CON
49
LO/EJ
CD SW3
47
PLL CLK
R107 2.2K
R106 2.2K
48
R108 2.2K
48
47
CP4 1K
MECH DET
50
MOSW
49
50
W4
W2
W3
W1
9
W5
8
W6
CP7 1K
R63 100K
R65 100K
72
75
74
73
71
70
69
68
R61 100K
R62 100K
69
68
R60 100K
CP8 1K
CP2 1K
67
66
65
64
63
62
61
60
59
58
R
111
100K
100K
R1
10
57
56
55
54
53
52
58
62
64
61
60
59
R1
13
2.2K
R1
12
2.2K
56
57
100K
R196
R248 100K
51
R247 1K
51
CP3 470
54
53
55
GND
EXTRES
+
C1
17
C1
18
10u10
0.01
7
8
FILOUT
FSEL
ARI
TM
10
9
SRM SUB-
SRM DET
GND
SRM SW2
SRM SUB+
C1
16 0.22
C1
15 0.22
S-GND
P-GND
OSCO
C119
C122
270P
L3
4.7uH
5
6
3
10u10
4
+
MPX
OSCI
OSEL
VCC
12
11
VREF
C120
X3
13
10P
1
2
56
57
16
QUAL
RDDA
RDCK
T57
C121
15
14
10P
R200
2.2K
17
4
61
10
1
3
4
5
58
59
IN1
IN2
NC
OUT2
2
VCC
NC
NC
OUT1
8
7
6
9
5
2
60
3
1
100u10
C147
0.01
C146
P-ON 5V
C144 0.01
24
D GND
46
L4
4.7uH
47
45
PLL DATA
22
PLL CLK
23
20
PLL CE
21
FSD OUT
28
12
10
R232 2.7K
/IF MODE OUT
+
4.7uH
L5
18
HI UP ADJ
19
IF GND
B
17
15
FM DET OUT
AM DET OUT
16
W16
W17
62
VCO GND
13
FM SD
14
12
10
REQUEST
11
K2IVTH
IF SELECT
8
9
RDS OUT
1
4.7uH
Q50,51
L6
68
Q48,49
1K
R233
22K
R234
4.7uH
69
R235
22K
R236
1K
4
0.01
C151
AM LO/DX
FM LO/DX
7
5
FM VCC
AM VCC
6
0.01
C153
L9
3
AM ANT
2
RF GND
FM ANT
L7
D33
2
1
L8
52mH
RROUT
RLOUT
REF
FROUT
FLOUT
OUTL
OUTR
4.332MHz
2
4
3
1
5
2
4
3
1
5
3
L DATAL
REMO
LOCK SW
DIM CON
L CLK
L DATAS
ILL+B
ILLMG
13
11
12
L CE
RST
9
10
7
8
5
6
4
DGND
VDD
NC
2
1
5
3
2
4
6
7
8
9
10
11
12
13
14
15
1
S.GND
S.GND
UNIT
0-11
0-11
No.
KDC-8016
KDC-8015
MODEL NAME
KDC-X715
0-10
0-11
KDC-715S
10
17
40
REMO
LOCK SW
DIM CON
L DATAL
L DATAS
L CLK
ILLMG
ILL+B
DGND
VDD
NC
RST
L CE
C162
0.01
W28
GND
+B
DET
4
1
2
R44 47
R46 2.2K
R45 47
R48 4.7K
R47 4.7K
18
3
39
38
37
16
REQ C
REQ H
CH CON
CH MUTE
2
1
3
4
R42 2.2K
R43 47
R41 4.7K
D
ATA
C
D
ATA
H
CH RST
7
CLK
5
6
8
22K
22K
22K
22K
IC15
IC5
IC1
IC11
IC13
(1/2)
(x13-978X-XX)
A
CN5
D21
RST IC
PH1
NONFAD SW
HPF & LPF
u-COM
CN7
G
RDS
DECODER
Q50
AM+B
Q49
Q48
FM+B
Q51
WH1
IC1
:
IC2
: TDA7400
IC3
: M5237ML
IC4
: TDA7386
IC5
: TDA7401
IC6
:
IC7,8
:
IC10
: TC74HC02AF
IC11
: TDA7479D
IC13
: LB1930M
IC14
: BR24C01AF or
IC15
: S-80830ANNP
Q1,4
: 2CB1565F(E,F)
Q2,14,16,18,20,28,29,
34-37
: 2SD601A or
Q3,15,17,19,24,41 : 2SB709A or
Q5,8,25,30,31,53
: KRA103S or
Q6,9,33,49,51
: UN2212 or
Q7
: 2SD2396F40
Q10
: 2SD1760
Q11
: DTA123JK
Q12,52
: KRC104S or
Q13
: 2SB1443
Q21,23
: 2SB1277(Q,R)
Q22,26
: DTC114EK
Q38
: KRC107S or
Q48,50
: 2SB1188(Q,R)
D1
: RM10ZLF
D2,11,12
: AMOIZ
D3,8,19
: MA4056(N)-M
D4
: MA4082(N)-L
D5
: MA4110-L
D7
: MA4110(N)-M
D13,27,47,48
: KDS181 or
D16,18,60
: MA3062WA
D20
: MA4062(N)-M
D21,34
: KDS184 or
D53-59
: KDS226 or
M24C01-WMN6T
2SC2412K
2SA1037K
DTC124EK
DTA124EK
DTC144EK
DTC114YK
DAP202K
DAN202K
DA204K
D23,24
: RD6.8M(B2)
D28,29
: RD6.8MW
D32
: MA3056-M
D33
: SA-C2012-101TB
D35-43
: 1SR154-400
(X25-847X-XX)
SIGNAL LINE
A1
MASK
MECHA
(E30-4802)
CH CORD
2/2
X13-
CN1
(X13-978X-XX)
UPD784217GC105
NJM4565M-TE2
ICL7660SIBA
to CD MECHA. (X32- )
ANT.
D18
D16
CN3
TUNER
J1
MOTOR
DRIVER
•DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to
variations between individual instruments or/and units.
0V
4.9V
4.9V
5V
0V
5V
0V
7.8V
0V
0V
0V
0V
0V
0V
5V
5V
0V
2.4V
2.4V
4.9V
0V
4.9V
0V
0V
4.9V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
0V
4.0V
0V
4.0V
0V
0V
4.0V
4.0V
4.0V
0V
8.1V
5V
0V
5V
0V
5V
0V
0V
5V
5.0V
5V
0V
0V
5V
0V
5V
0V
5.0V
0V
5V
5.0V
0V-4.4V
0V or 5.0V
0V
0V
5V
0V
5V
0V
0V
5V
5.0V
5V
0V
0V
5V
0V
5V
5V
0V
0V
5V
0V
5V
0V
5V
0V
5V
2.6V/5.0V
0V or 5.0V
0V
0V
5V
5V
0V
5V
0V
5V
0V
(FL) 5.0V(LCD)
5V
0V
0V
5V
0V
5V
4.9V
0V
0V
0V
5V
4.9V
0V
5V
0V
0V
5V
0V
0V
0V
5.0V
5V
0V
5V
0V
0V
5V
0V
4.9V
0V
5V
0V
4.9V
5V
0V
0V
5V
0V
5V
0V
0V
5V
5V
0V
4.0V
(LCD)
B LINE
B LINE