A
B
D
F
H
J
C
E
G
I
2
1
3
5
7
4
6
7.7V
5.0V
5.0V
0V
0V
7.6V
7.6V
0V
0V
5V
1V
5V
0V
0V
5V
0V
5V
0V
5V
0V
0V
7.3V
4.7V
14.4V
7.3V
0V
7.3V
7.2V
0V
7.3V
7.3V
7.3V
14.4V
0V
0V
5V
0V
5V
0V
5V
0V
0V
5V
0V
5V
5V
0V
5V
0V
5V
0V
5V
0V
0V
5V
5V
0V
5V
0V
5.0V
0V
5V
0V
0V
5V
0V
0V
5V
5V
0V
5V
0V
0V
5V
0V
0V
5V
0V
5V
5V
0V
0V
5V
5V
0V
5V
0V
0V
5V
5V
0V
5V
0V
0V
5V
5V
0V
0V
5V
0V
5V
0V
5V
5V
0V
5V
0V
0V
5V
5V
5V
0V
0V
5V
5V
0V
0V
5.0V
0V
5.0V
5.0V
5V
0V
5V
0V
1.7V
1V
2.5V
5V
2V
0V
0V
0V
5.0V
5.0V
5V
0V
1V
5V
5.0V
7.3V
0V
0V
0V
3.3V
0V
5V
7
6
5
4
3
2
1
M+B
GND
T-END
STBY
GND
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
D GND
ILL GND
LRST
SW5V
LED +B
LAMP +B
LDATAS
L CLK
L CE
LDATAL
VDD
RST
REMO
PANEL SW
ESD GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
TA
B
GND
OUT2-
STBY
OUT2+
VCC
OUT1-
GND
OUT1+
SVR
IN1
IN2
GND
IN4
IN3
OUT3+
GND
OUT3-
VCC
OUT4+
MUTE
OUT4-
GND
CD
1
2
3
4
5
VCC
NC
IN1
IN2
SGND
10
9
8
7
6
NC
OUT1
NC
OUT2
PGND
9
2
1
5
4
3
13
14
10
11
12
7
6
8
RST
12
GND
7
2
Lch
REQ C
DATA C
MUTE
5
10
CON
4
3
B.U.
9
8
CLK
13
Rch
S GND
10
6
REQ H
1
6
9
12
13
11
2
DATA H
11
5
1
8
4
7
3
1K1/2W
R1
1
10K
R10
R351 1K
R108 1K
R109 1K
R123 1K
R121 1K
37
22
23
24
21
20
21
0.22
C320
0.22
C321
AC GND
3
5
7
9
R251
R252 1K
100u10
+
4.7K
0.22u50
11
12
14
15
R257
1u50
+
430
R258
R259 150K
1u50
+
TH1
C252
R262 22K
R261 100
1u50
+
R256
C256
R254
C254
R253
C253
R255
C255
4.7K
4.7K
4.7K
0.22u50
0.22u50
0.22u50
17
19
23
21
C258
R30
A
7
9
23
19
21
9
7
5
3
17
R16 4.7K
4.7K
R17
YES
YES
X14-6172-70
KRC-478R (E)
KRC-33R (E)
KRC-478RY (E)
KRC-378R (E)
MODEL NAME
UNIT No.
R155
L1
+
2200u50
C1
R286 100K
R288 100K
R287 100K
1u50
53
54
5
6
5
63
16
18
17
7
+
R278 47
R279 4.7K
R280 4.7K
R276 10
R282 2.2K
R283 2.2K
R284 47
R275 10
R285 47
R277 4.7
R281 2.2K
C266 1u50
C267 100u10
+
+
W1
12
11
10
9
4
8
6
2
3
7
1
5
13
27K
R360
47K
R361
R329 470 C324 0.01
R330 100K
C323 0.01
R327 470
R328 100K
26
18
45
50
5
61
11
19
13
12
10
33K
R21
0.01
C13
10K
R24
24K
R26
10K
R27
10K
R28
100K
R29
0.01
C15
5
13
18
17
16
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
ACC
P
.CON
T
.MUTE
A.5
RL-
RL+
FL-
FL+
FR+
FR-
RR+
RR-
GND
GND
GND
B.U.
B.U.
B.U.
KRC-378RY (E)
C265
66
6
9
2
1
2
1
4
3
34
VIOL/BLK
YEL
5
7
6
8
56
8
7
BLK
RED
BLU/WHT
VIOL
GR
Y/BLK
GR
Y
WHT/BLK
WHT
GRN/BLK
GRN
B
A
5
7
1
3
B
6
8
5
7
6
8
2
4
12
34
A
T
. MUTE
P
. CON
F1
(10A)
(F52-0006-05)
18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
ACC
P
. CON
T
. MUTE
P
. CON
RL-
RL+
FL-
FL+
FR+
FR-
RR+
RR-
GND
GND
GND
B.U
B.U
B.U
RL+
RL-
FL+
FL-
FR+
FR-
RR+
RR-
RL-
RL+
FL-
FL+
FR+
FR-
RR+
RR-
ACC
B.U
ACC
B.U
B.U
ACC
B.U
GND
VDD
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
RESET
N.C.
N.C.
P.
O
N
SW5
N.C.
CH-CON
CH-REQ H
B.U.-DET
ACC-DET
BEEP
N.C.
P-CON
STBY
SVR
P-MUTE
N.C.
N.C.
N.C.
AFC
N.C.
MUTE
IC2-SDA
PLL-SDA
N.C.
IC2-SCL
SD
VSS1
R-QUAL
R-DATA
FWD/REV
MUSIC
DSI
N.C.
FM+B
AM+B
PLL-SCL
EQ-MUTE
MS-CONT
SUB-
CONT
AV
IC2 TYPE
0
IC2 TYPE
1
A
VSS
MOT
OR
M-STBY
A
V
REF 1
ILLUMI
L-RESET
P
ANEL
L-DA
T
A
L
L-DA
T
A
S
L-CLK
N.C.
N.C.
CH-DA
T
A
C
CH-DA
T
A
H
CH-CLK
L-CE
SUB+
REMOTE
R-CLK
CH-REQ C
PACK IN
KEY-REQ
T-END
VSS 0
VDD 1
X2
X1
IC/TEST
XT2
VDD 0
VDD 0
AV REF 0
S-METER
T-MODE
PHONE
NOISE
TYPE 0
3.3u25
C1
1
+
R14 22K
1K 1/2W
R15
0.068
C10
R13 1K 1/2W
0.1u50
C9
+
4.7K
750
C257
50
47
46
45
R127 47K
54
53
R131
C110 100u6.3
+
C111 0.01
0.1
C112
100K
R142
Q20
66
6
5
0.01
C16
3.3K 1/2W
R23
R152 47K
R151 47K
R1 22K
C2 100u16
+
10u10
C4
+
R2 100
0.01
C3
C5 100u6.3
+
R3 47K
8
1K
R12
56
2.2K
R4
2.2K
R133
2.2M
R134
R136 4.7K
R144
6.8K
15P
C102
15P
C101
X1
R106 47
R107 47
R103 470
R104 1K
R101 2.2K
17
9
18
16
10
11
12
13
19
20
56
61
47
38
10K
R122
10K
R124
R119 1K
R118 1K
R115 1K
R117 4.7K
25
R111 1K
R156 47K
R155 47K
R139
2.2K
2.2K
R141
R112 1K
79
78
76
77
63
62
13
64
4.7uH
L2
46
C251
47
100u16
C7
+
R5 10K
1K
R6
1K
R7
100u10
+
C8
2.2
R9
2.2
R8
1/2W
1/2W
35
34
32
31
30
29
R116
4.7K
8
78
R18 10K
R19 47K
C12 0.01
R20 22K
41
KRC-480R (M)
KRC-478RV (E)
KRC-478RYV (E)
YES
X14-6222-70
NO
NO
X14-6172-71
NO
NO
X14-6222-71
YES
X14-6172-72
YES
X14-6222-72
1000P
C14
100K
R25
100K
Q52
Q53
R260 36K
W2
Q51
100K
R125
4.19MHz
100K
R102
1
2
3
5
4
Q1,2
240
R145
YES
YES
YES
YES
YES
NO
NO
YES
YES
NO
NO
NO
NO
NO
R156
NO
R356 100
CN2
J3
J4
TOP VIEW
Q8
Q9
D36
D35
Q51
D34
Q53
Q52
D9
D7
(X14-6xxx-xx)
D1
D52
D56
D53
D51
D55
D54
J4
CD/MD CN
Q12
Q13
Q65
D11
Q18
Q19
IC
POWER
SUB MOTOR
MUTE DRIVER
PANEL SW
ACC DETECTION
ILLUMI. AVR
POWER
MAIN MOTOR SW
J2
D12
B-P
A
R
T
A-P
A
R
T
(INITIAL)
<TOP VIEW>
D6
Q15
Q16
Q14
Q17
D13
Q20
u-COM
RESET
CONTROLLER
D33
Q5
Q4
D3
Q1
Q2
Q3
Q11
Q10
D2
SW 5V
D8
D4
Q7
Q6
D10
ACC
P
.CONT
OUT
ANT
.CONT
BA
TT
FRONT
.L
REAR.L
FRONT
.R
REAR.R
DETECTION
BACK-UP
PRE OUT
MUTE CONTROL
MUTE
E-VOLUME
LOW LEAKAGE
AMPLIFIER
SVR CONTROLLER
TEL MUTE
P-CON.
SW 14V
AVR
8V
5V AVR
BACK-UP
Q21
D14
DSI
D5
u-COM
J2
IC4
IC6
(X14-6xxx-xx)
IC10
DC1
(E30-4792-05)
IC1
IC9
SYNTHESIZER UNIT
10K
10K
47K
10K
47K
47K
22K
22K
47K
47K
47K
47K
47K
47K
22K
22K
47K
10K
22K
22K
22K
22K
