A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
0V
4.1V
4.1V
5.0V
3.3V
8.3V
0V
3.3V
0.8V
1.3V
0V
7.2V
0V
0V
4.5V
14.0V
0V
7.2V
7.0V
7.0V
7.0V
0V
14.0V
3.8V
0V
7.2V
7.2V
7.2V
7.2V
0V
0V
5V
0.8V
1.3V
7.0V
1.8V
0V
4V
0V
5V
0V
5V
0V
5V
0V
5V
0V
0V
0V
0V
5.0V
0V
0V
5V
0V
5.0V
5.0V
3.4V
0V
0V
5V
0V
0V
5V
5.0V
0V
5V
4.0V
0V
5V
8.3V
4.8V
3.4V
7.2V
7.2V
7.2V
AM+B
19
23
20
21
22
AUDIO OUT
SD
S-METER
IF1+B
14
17
18
VDD 5V
IF2+B
15
16
SDA
SCL
DIG GND
10
11
12
13
OSC GND
VT
PLL+B
IFC OUT
7
8
9
OSC GND
OSC GND
OSC GND
FM ANT
3
4
5
6
AM ANT
NC
FM+B
1
2
RF GND
14
10u16
C450
+
270
R450
10u16
C451
R451
R454 100
R452
30K
2 Lch
R453
30K
R455 100
+
270
1
2
4
5
3
7
8
6
10
9
12
11
13
CDR
OUT LR
1 Rch
A
COUT L
A
COUT R
OUT LF
OUT RF
CREF
VREF
T
APER
T
APEL
28
27
25
24
26
20
OUT RR
VDD
PH-
CD L
CD GND
AM
PH+
21
22
23
GND
MUX R
MUX L
SMUTE
SD
A
SCL
QU
A
L
MPX
MP IN
LEVEL
18
19
15
17
16
MP OUT
16
15
14
13
12
11 10 9
8
7
6
5
4
3
2
1
FL+
RL+
FL-
RL-
FR-
RR-
FR+
RR+
P-ANT
P-CON
AC
C
B.
U
GND
2
4
6
8
10
12
14
16
18
20
22
24
GND
STBY
VCC
GND
SVR
RR IN
FL IN
A
C
GND
GND
VCC
MUTE
GND
1
3
5
7
9
11
13
15
17
19
21
23
25
TA
B
RR-
RR+
FR-
FR+
FR IN
GND
RL IN
RL+
RL-
FL+
FL-
CD
19
23
17
21
9
3
7
5
17
23
21
19
L1
3300u16
C50
+
6
5
4
3
2
1
T.MUTE
GND
MOT GND
MOT +B
PACK IN
GND
10K
R261
1K
47K
R57
0.01
C52
47K
R55
R50 3.3K 1/2W
30K
R52
10K
R54
R350 4.7K
R351
1K
R352
3.3u25
C350
+
22K
C351
0.1u50
C352
+
1K 1/2W
0.068
4.7K
R16
0.22u50
C18
0.22u50
C15
4.7K
R13
0.22u50
C17
4.7K
R15
0.22u50
C16
R14 4.7K
100u10
C159
+
+
C160
10u16
1K
4.7K
430
1u50
+
180K
1u50
C162
+
R157
33K
750
0.01
C161
R154
R155
R156
23
24
25
26
0.01
C151
47u10
C150
+
L3 4.7uH
0.082
C158
4.7K
R150
0.1
C155
0.015
C153
0.22
C154
0.033
150P
C157
C156
C14
C13
1u50
C152
+
23
IF1 GND
IF2 GND
0.01
C200
4.7uH
R205
150
27
28
4.7uH
10
26
C206 47u10
+
4.7uH
L5
1
2
3
4
5
FWD/REV
GND
HEAD R
HEAD COM
HEAD L
0.047
C251
10K
R251
1500P
C2
1500P
C1
22K
R1
22K
R2
100u16
C57
+
10K
100u10
C58
+
1K
R64
1K
R63
R65
2.2 1/2W
R66
2.2 1/2W
4.7K
2.7K
R207
R206
4
3
24
26
0.22
0.22
48
47
51
49
C56
100u6.3
5.6K
R61
+
47K
R60
10u10
R58
22K
100
R59
C55
+
C54
0.01
100u16
+
53
R68
100K
100K
R69
3
7
5
9
GND
7
6
5
4
3
2
1
9
8
11
10
12
13
VDD
14
+
0.022
4
C7
120K
R7
100u10
100
+
100P
C5
C9
6.8K
R3
L IN
8
L NF
L OUT
7
6
C3
47u6.3
3
10
R250
120K
R8
C250
100u10
+
C8
0.022
C10
100u10
R4 100
GND
VCC
R OUT
5
4
100P
C6
R NF
3
2
+
+
C4
47u6.3
R IN
1
1/2W
0.01
C210
32
33
25
23
C53
F1 10A
5
3
2
4
1
GND
1
PACK IN
2
T. MUTE
MOT +B
MOT GND
GND
6
3
4
5
1/2W
TH1
C452
1
2
3
4
5
R373
R371
R370 4.7K
1K
22K
R372
1K
W83
W121
100
47K
0.22
100
R135
0.01
C164
30
31
R200
1K
C201 0.01
R202
1K
R203
22K
R201
22K
W84
11
10
9
8
7
6
5
4
3
2
1
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
AM+B
PLL DATA
PLL CLK
SD
FWD/REV
KI3
PACK IN
FF/REV
MOTOR
REMO
BEEP
KS4
SMETER
KS3
KS2
KS1
KS0
KI2
KI1
KI0
VL1
VL2
VL3
COM1
COM2
COM3
AV
S
S
VREF
VCC
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
P-MUTE
ANT. CON
P-CON
ILLON
SW5
EQ-MUTE
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
FM+B
SCK
SD
A
RESET
XIN
XOUT
VSS
IC2 TYPE1
IC2 TYPE2
SEL1
SEL2
MUTE
STBY
SVR
A
CC DET
B
U
DET
R102
12
11
10
9
8
7
6
5
4
3
2
1
RST
KI3
KS4
KS3
KS2
KS1
KS0
KI2
KI1
KI0
ILL +B
ILL GND
2.2K
R307
R110 1K
R106 1K
R105 1K
R104 1K
2
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
52
51
53
54
65
57
55
56
58
59
60
61
62
63
64
70
66
67
68
69
71
72
73
74
75
78
76
77
79
80
97
R103 10K
R302 47K
R303 47K
R300 47K
47K
51
54
53
52
56
26
30
27
28
10
R301
56
47K
X1
8.664MHz
27P
C102
27P
C103
49
48
47
46
50
72
71
70
69
76
80
79
78
77
74
73
75
87
90
89
88
95
96
86
85
84
83
82
81
11
9
8
5
7
6
4
3
17
18
R67
1K
15
14
R260
14
15
R122 47K
R123 47K
R121 47K
R120 47K
R125 47K
R127 47K
C104 0.1
2
31
33
32
54
R118
R117 1K
R107 2.2K
R111
100K
R109 47K
R108 47K
10K
R101
4.7K
R113 1K
R115
1K
10K
R114
10K
R119
5.6
R340
PL2
PL1
3
52
R134
C60
46
50
3
1
2
5
4
6
8
7
11
9
10
12
330
R3
R4 330
R2 330
R1 330
KI1
KI0
KS1
KS0
KI2
KS3
KS2
KI3
KS4
KI2
KI3
KI0
KI1
KS4
KS2
KS3
KS0
KS1
4
5
6
7
8
9
11
17
BU
YEL
ACC
GND
BLK
RED
BLU
11
10
9
2
3
1
P. CONT OUT
REAR R
VIOL
VIOL/BLK
REAR L
GRN/BLK
GRN
BLU
GRY
GRY/BLK
14
13
12
6
5
4
WHT/BLK
WHT
16
15
8
7
ANT. CONT
FRONT R
FRONT L
BU
YEL
REAR L
REAR R
VIOL
VIOL/BLK
GRN/BLK
GRN
GND
BLK
9
1
ACC
FRONT L
P. CON/ANT. CON
RED
BLU/WHT
10
11
12
2
3
4
GRY
GRY/BLK
WHT/BLK
14
15
13
7
6
5
FRONT R
WHT
16
8
GRN/BLK
WHT/BLK
FRONT L
REAR L
14
15
13
11
12
10
BATT
BU
YEL
9
REAR R
VIOL/BLK
VIOL
BLK
1
FRONT R
ANT. CONT
BLU
RED
3
4
2
GRY/BLK
GRY
6
7
5
ACC
GND
ANT.
CONT
ACC
16
GRN
WHT
8
R152
R151
R158
0.01
C101
L9
L10
L4
52mH
P1
R62
R5
R6
6.8K
18
UNIT No.
KRC-188
RX-270
KRC-108S
MODEL NAME
0-10
0-13
KRC-108S
0-14
IC4
Q50
Q58,59
Q60,61
Q151
Q200,201
Q202,203
Q260,261
Q350,353
R353
R112
1K
R131
10K
W117
L8
4.7uH
W11
W116
C202
0.01
IC2
Q150
Q301
Q351
Q352
91K
R153
A1
REAR PRE OUT
Q450
J5
Q451
J2
D50
WH1
D261
D260
Q260
Q62
D52
D51
Q50
B.U DET SW
D351
Q350
D350
P-CON
Q351
D352
Q353
Q352
Q151
D151
D150
Q150
D200
ANT
J1
CN1
Q55
Q54
D55
Q56
Q57
8V DRIVER
P-ON 5V
Q53
Q52
Q51
D53
D54
Q153
WH1
Q261
F/E
Q371
D370
Q370
D371
A
Q200
FM+B SW
AM+B SW
Q202
Q203
Q201
CN2
D56
Q60
Q61
Q58
Q59
D13
D100
D101
D102
D103
D104
Q301
CN1
D7
D8
D9
D12
D11
D10
D6
D5
D4
D3
D2
D1
1
2
BAND
ATT
VOL+
VOL-
CLK
T.
4
3
AUTO
5
T.UP
AUDIO
6
SRC
EJECT
DOWN
RST
B30-1565-05
D1-12
:
(X13-9660-1x)
SYSTEM u-COM
POWER IC
EQ AMP
RESET IC
B.U. 5V
DRIVER
SW
8V SW
ILL+B SW
ILL+B DRIVER
ACC
DET SW
FORCED
PRE OUT
MUTE SW
MUTE SW
PREOUT
MOT+B SW
P-CON
DRIVER SW
ANT-CON
DRIVER SW
E-VOL.
MUTE LOGIC
IC
E-VOL.
MUTE SW
P-CON
PROTECTION
SW
PROHIBIT SW
P-CON
PROTECTION
DISCHARGE SW
LOGIC
RESET
INVERT SW
D152
4.7K
4.7K
22K
22K
47K
10K
47K
10K
22K
22K
22K
22K
47K
22K
47K
22K
47K
10K
22K
22K
22K
22K
47K
10K
47K
22K
47K
22K
47K
47K
IC2
IC4
IC6
IC3
IC5
SYNTHESIZER UNIT (X14-6150-10)
CASSETTE MECHA
(D40-1137-05)
IC1
KRC-188(M)
DC CORD
(E30-4784-05)
(E30-4783-05)
KRC-108S(K)
DC CORD
DC CORD
RX-270(J)
(E30-4806-05)
(X13-9660-1x)
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer 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 the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual
instruments or/and units.
!
