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A
B
1
WHT
GRN
8
16
FRONT L
REAR L
WHT/BLK
GRN/BLK
7
15
GRY/BLK
VIOL/BLK
6
14
FRONT R
REAR R
GRY
VIOL
5
13
4
12
BLU/WHT
P. CON/ANT. CON
3
11
RED
ACC
2
10
BLK
YEL
GND
1
9
BU
2
DC CORD
(E30-4783-05)
KRC-108S(K)
WHT
GRN
8
16
FRONT L
REAR L
WHT/BLK
GRN/BLK
7
15
GRY/BLK
VIOL/BLK
6
14
FRONT R
REAR R
GRY
VIOL
5
13
BLU
ANT. CONT
4
12
BLU
P. CONT OUT
3
11
RED
ACC
2
10
3
BLK
YEL
GND
1
9
BU
DC CORD
(E30-4784-05)
KRC-188(M)
WHT
GRN
8
16
FRONT L
REAR L
WHT/BLK
GRN/BLK
7
15
GRY/BLK
VIOL/BLK
6
14
FRONT R
REAR R
GRY
VIOL
5
13
ANT.
BLU
ANT. CONT
4
12
CONT
MOT GND
3
11
RED
4
ACC
ACC
2
10
BLK
YEL
GND
1
9
BATT
BU
DC CORD
(E30-4806-05)
RX-270(J)
5
6
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
!
7
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.
C
D
SYNTHESIZER UNIT (X14-6150-10)
J2
16
15
14
13
12
11 10 9
F1 10A
8
7
6
5
4
3
2
1
D50
C50
3300u16
+
R50 3.3K 1/2W
R370 4.7K
D370
R54
D52
C52
10K
0.01
Q50
Q371
R371
ACC
R57
Q370
1K
DET SW
47K
Q62
R373
R372
R69
1K
22K
100K
R68
ANT-CON
100K
DRIVER SW
Q50
B.U DET SW
52
R350 4.7K
C53
100u16
D350
+
P-CON
R58
D54
R351
22K
1K
C54
Q51
1/2W
0.01
Q350,353
Q350
P-CON
C350
DRIVER SW
3.3u25
C55
Q52
10u10
Q351
+
+
P-CON
Q351
PROTECTION
B.U. 5V
SW
DRIVER
C351
Q352
0.068
P-CON
PROTECTION
Q352
PROHIBIT SW
Q53
Q353
C352
D352
0.1u50
+
P-ON 5V
SW
53
Q60,61
ILL+B DRIVER
WH1
R301
R102
T.MUTE
6
47K
Q60
10K
GND
5
Q59
4
22K
Q261
MOT +B
3
22K
Q61
1
1.8V
Q260,261
R67
2
MOT+B SW
1K
VL1
3
3
KI0
Q58
4
Q260
4
KI1
5
5
KI2
Q58,59
D100
6
6
ILL+B SW
KS0
D101
7
7
KS1
14
D102
8
PACK IN
2
8
KS2
D103
9
GND
1
9
KS3
R107 2.2K
10
SMETER
D104
11
11
KS4
12
BEEP
13
REMO
14
14
MOTOR
15
15
FF/REV
R108 47K
R109 47K
16
PACK IN
17
17
KI3
18
18
FWD/REV
R111
19
100K
20
21
22
23
24
25
R112
4.7K
26
26
SD
R113 1K
27
27
PLL CLK
R115
28
28
PLL DATA
1K
29
30
30
AM+B
5V
0V
R119
10K
E
F
+
IC4
IC4
POWER IC
7.0V
R156
180K
C159
100u10
+
+
C160
TH1
D151
D152
10u16
+
R153
91K
5.0V
IC3
MUTE LOGIC
IC
14
1
0V
VDD
5V
0V
Q151
2
13
5V
12
0V
3
11
4
10
5V
5V
0V
9
0V
Q153
5
Q151
22K
6
FORCED
8
DISCHARGE SW
22K
0V
7
R134
GND
47K
C60
PRE OUT
0.22
MUTE SW
54
R101
10K
C101
0.01
5.0V
3.4V
80
SEG11
80
79
SEG12
79
5.0V
78
SEG13
78
77
SEG14
77
76
SEG15
76
75
SEG16
75
74
SEG17
74
73
SEG18
73
72
SEG19
72
71
4V
SEG20
71
0V
70
SEG21
70
69
SEG22
69
5V
68
0V
67
IC1
66
SYSTEM u-COM
65
64
63
62
5V
61
0V
60
59
58
57
EQ-MUTE
56
SW5
56
55
54
ILLON
54
53
P-CON
53
52
ANT. CON
52
5V
51
0V
P-MUTE
51
5V
0V
RESET IC
IC6
5
X1
1
8.664MHz
5.0V
0V
2
4
3
G
H
A
REAR PRE OUT
J5
C452
0.01
Q200,201
FM+B SW
R452
R453
30K
30K
Q450
Q451
R201
22K
PREOUT
Q200
MUTE SW
22K
31
22K
+
+
L3 4.7uH
30
Q150
C150
47u10
+
C151
8.3V
0.01
5V
0V
IC2
Q150
IC2
Q301
E-VOL.
E-VOL.
RESET
MUTE SW
LOGIC
INVERT SW
3.4V
4.1V
4.1V
4.0V
Q301
C152
R150
1u50
4.7K
47K
+
47K
C157
150P
4.8V
C156
0.033
R65
2.2 1/2W
Q56
R66
8V DRIVER
2.2 1/2W
Q57
Q55
R63
R64
1K
1K
C251
0.047
Q54
8V SW
+
+
R7
R8
+
120K
120K
R5
C250
R6
6.8K
C7
100u10
C8
6.8K
+
0.022
0.022
C3
47u6.3
C6
0.8V
100P
IC5
EQ AMP
(X13-9660-1x)
RST
CN2
CN1
R307
2.2K
RST
12
12
R110 1K
KI3
17
11
11
KI3
KS4
11
10
10
KS4
KS3
9
9
9
KS3
KS2
8
8
8
KS2
KS1
7
7
7
KS1
KI2
KS0
6
6
6
KS0
R106 1K
1
KI2
5
5
5
KI2
R105 1K
KI1
4
4
4
KI1
R104 1K
KI0
3
3
3
KI0
KI1
ILL +B
2
2
2
VOL-
VOL+
KI0
3
ILL GND
1
1
KI3
I
J
ANT
J1
F/E
A1
1
RF GND
L4
52mH
2
FM ANT
Q201
R203
C200
W84
0.01
3
22K
AM ANT
4
L10
NC
4.7uH
5
Q203
FM+B
6
AM+B
Q202
7
22K
Q202,203
OSC GND
8
AM+B SW
OSC GND
22K
9
OSC GND
10
OSC GND
11
L8
VT
4.7uH
12
PLL+B
13
W11
IFC OUT
14
28
SDA
W116
15
27
SCL
D200
R205
W117
16
DIG GND
150
17
VDD 5V
L9
4.7uH
C206 47u10
18
IF2 GND
+
19
IF2+B
20
AUDIO OUT
21
26
SD
22
10
S-METER
23
IF1+B
23
IF1 GND
P1
CASSETTE MECHA
(D40-1137-05)
CN1
WH1
R251
10K
FWD/REV
1
1
6
T. MUTE
GND
2
2
5
GND
4
MOT GND
HEAD R
3
3
3
MOT +B
2
PACK IN
1
GND
HEAD COM
4
4
HEAD L
5
5
1.3V
D1-12
:
B30-1565-05
(X13-9660-1x)
MODEL NAME
UNIT No.
KRC-108S
0-10
KRC-188
RX-270
0-13
KRC-108S
0-14
2
BAND
ATT
AUDIO
T.
CLK
DOWN
T.UP
4
AUTO
5
6
EJECT
SRC
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