Kenwood KRC-17G, KRC-194A, KRC-266LA Schematics
A B C D E
1
2
3
4
5
6
7
13
4
3
128
711
21610
59
16 15 14 13 12 11 10
876543 2
FL+
RL+
FL-
RL-
FR-
RR-
FR+
RR+
P-ANT
P-CON
ACC
19
23
17
21
9
375
R412 100
R410 4.7K
R409 4.7K
R402 10
R411 100
R406 4.7K
R407 4.7K
R408 1K
R403 100
7
6
5
46
45
1
17
63
16
10
0.47u50
C401
+
R401
C402 0.47u50
+
R400 4.7
C400 22u6.3
+
100K
100K
R413
100K
0.01
3.3K 1/2W
R370 4.7K
R350 4.7K
R351 1K
R352
3.3u25
C350
+
22K
C351
0.1u50
C352
+
1K
0.068
55
1K
R67
18
1
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
PANEL
SEL 1
R CLK
PACK IN
VDD 1
X2
X1
IC
XT1
VDD 0
S METER
2
A GND
REQ C
DATA C
8B.U.3
CON
MUTE45910
DGND
REQ H
1
2
9
6
7
CLKRch 13
10 6
RST1112
75
DATA H
Lch
13 11 12 8 4 312
1/2W
1/2W
REQ C
KEY-REQ
SEL 0
VSS 0
AVREFO
PHONE
NOISE
AV CONT
∗
R107
R106
2.2K
10K
62
47K
R105
6.8K
X1
C102
15P
15P
C103
10
R100
0.022
C104
R55
47K
K
R57
C52
54
R353
Q351
T-MUTE
R380
10K
0
C
2
R
∗
R104 47K
∗
R103 47K
∗
R101 47K
∗
R102
57
53
58
60
63
RL-
BU
YEL
9
TEL MUTE
BRN
12
11
10
VIOL/BLK
GRN/BLK
RR+
RR-
RL-
VIOL
15
13
14
RL+
GRN
16
13 57
RR+
RL+
FL+
FL-
FR-
RR-
FR+
2
2
68
57
4
13
68
GND
4
ACC
P-CON
B
A
BLK
1
ANT. CON
P. CON
BLU/WHT
BLU/WHT
RED
4
2
3
GRY/BLK
WHT/BLK
GRY
7
6
5
FRFR+
FL-
WHT
8FL+
R261
R262 47K
GND 1
PACK IN
2
1/2W
1K
R260
10K
R263 47K
GND 5
MOT
3
MOT
4
T.MUTE 6 28
27
+B
GND
Q58,59
Q60,61
Q350,353
Q352
76
78
R405
R404
R382 47K
R51
4.19MHz
47K
∗
R108
1
2
34
5
C101
0.01
+B
+B+B
+B
+B
+B
+B
+B+B
+B+B+B
+5V
+5V
+5V
+5V
+5V+5V+5V
IC6
(E30-4790-05)
DC1
47K
47K
22K
22K
22K
47K
10K
47K
47K
22K
10K
47K
J4
J2
D400
D401
D408
D405
D410
D409
D404
D261
D5
D351
D370
ANT-CON.
Q350
Q351
D352
Q353
Q352
Q301
Q58
Q60
Q61
Q59
D56
∗
A
TOP VIEWJ4
D371
ILLUMI
+B SW
ILLUMI
+B DRIVER
DRIVER SW
P.CON PROTECTION SW
Q49
P-CON.
P.CON
DETECTION
ACC
D3
D100
MOTOR
+B SW
Q260
MOTOR+B
DRIVER
D260
WH1
Q261
RESET
RESET
CD-CH
SW
P.CON PROTECTION
INHIBIT SW
SW
0.9V
0V or 5.0V
0V
0V o
0V
5.0V
0V
5.0V
1V
0V
5.0V
0V
0V
5.0V
5.0V
2SB1565
DTA114E
DTA124EK
DTA144EK
DTC114TK
DTC114YK
DTC124EK
DTC143TK
DTC144EK
KRC103S
2SA1036K
2SC2412K
2SB1548
2SB1277
2SB1443
2SA1037K
KRA102S
KRC104S
LA3161
TDA7479D
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.
!
F G H I J
16 15 14 13 12 11 10 9
876543 2 1
FL+
RL+
FL-
RL-
FR-
RR-
FR+
RR+
P-ANT
P-CON
ACC
B.U
GND
19
23
17
21
9
375
L1
C50 3300u16
+
0.01
3.3K 1/2W
33K
R52
10K
R54
R351 1K
R352
3.3u25
C350
+
22K
C351
0.1u50
C352
+
1K
0.068
100u10
C159
+
+
C160
10u16
R152 1K
R151 4.7K
91K
R153
180K
C162 1u50
+
R157 100
R158 33K
R155 430
R156
1211109876
54321
PAN 5W
L DATA S
L CLK
L CE
L DATA L
u GND
PAN5V
RESET
ILL GND
ILL +B
ESD GND
R322 2.2K
R301 470
R302 470
R303 1K
R304 1K
27K 47K
R320R321
48
49
43
13
12
2
11
60
55
C56
100u6.35.6K
R61
+
47K
R60
10u10
R58
22K
100
R59
C55
+
C54
0.01
100u16
+
50
GND
7
R162 47K
6
5
4
3
C164
0.01
2
1
9
8
11
10
12
13
VDD
14
C53
F1 (10A)
R159 100K
1
565554535251504948474645444342
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
2
34567
8
9
10
11
12
131415
16
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
P.ON
B.U.DET
ACC DET
P. CONT
BEEP
AMP STBY
SVR
REQ H
CH CON
AMP MUTE
MUTE
AFC
PLL DATA
PLL CLK
VSS 1
IF COUNT
SD
FF/REW
MOTOR
PANEL
L CE
L RES
AVSS
R DATA
R QUAL
IC2 SEL 0
L DATA L
L DATA S
DATA C
SEL 1
R CLK
PACK IN
VDD 1
X2
X1
IC
XT1
VDD 0
S METER
R306 1K
2
1
TH1
P1
10
R323
1/2W
1/2W
Q151
Q153
Q320
16
DATA H17CH CLK
181920
IC2 SEL 1
AVREF 1
L CLK
161718
11
12
13
28
27
4.7K
R117
R119 2.2K
R120 1K
R121 10K
1K
1K
R123 10K
R122
R124
IC2 CLK
IC2 DATA
FM+B
AM+B
4.7K
∗
R125
36
35
39
37
38
40
41
32
41
REQ C
KEY-REQ
SEL 0
VSS 0
AVREFO
PHONE
NOISE
AV CONT
∗
R107
R106
2.2K
10K
62
47K
R105
6.8K
X1
C102
15P
15P
C103
3
2
1
575859
60
10
R100
0.022
C104
RESET
FWD/REV
ILLUMI
55
R55
47K
47K
R57
C52
54
54
R353
Q351
53
48
50
49
43
45
46
T-MUTE
R380
10K
0.01
C380
22K
R381
∗
R104 47K
∗
R103 47K
∗
R101 47K
R140 47K
2.2K
R142 47K
R110 100K
R113
2.2K
∗
R102
L RES
R305 1K
3
57
R49
100K
22K
R48
53
21
3
1
11
5
7
9
1315171923
25
TAB
RR+
RR-
FR-
FR+
FRI
GND
RLI
RL+
RL-
FL-
FL+
CD
GND
2
4
STBY
6
VCC
8
GND
10
SVR
12
RRI
14
FLI
16
AC GND
18
GND
20
VCC
22
MUTE
24
GND
4.7K
R14
0.22u50
C16
750
4.7K
0.22u50
C18
R16
4.7K
0.22u50
C15
R13
1u50
+
0.22u50
4.7K
R15
C17
17
19
23
21
24
25
23
26
R154 C161
58
60
5
6
IC4
Q352
Q51,52
76
78
357
9
R51
47K
R133
10K
∗
R161
∗
C163 0.01
4.19MHz
47K
∗
R108
100K
R111
R112
1
2
34
5
C101
0.01
+B
+B
+B +B +B
+B
+B+B
+B
+B+B
+B+B+B
+5V
+5V
+5V
+5V +5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V+5V+5V
+5V
P5V
P5V
P5V
P5V P5V P5V
+5V
IC3
SYNTHESIZER UNIT (X14-687X-XX)
IC4
∗
IC1
IC6
22K
22K
47K
10K
47K
47K
10K
22K
22K
D50
D52 D51
Q50
D351
D370
ANT-CON.
Q350
Q351
D352
Q352
Q151
D150
D152
D151
J3
Q320
01
Q53
Q52
Q51
D53
D54
∗
Q153
D371
P.CON PROTECTION SW
P.ON
5V SW
SYSTEM u-COM
DISCHARGE SW
PRE OUT
MUTE SW
PANEL 5V
SW
Q49
P-CON.
SVR FORCED
DETECTION
ACC
D380
D100
MUTE LOGIC
POWER
ANPLIFIER
RESET
P.CON PROTECTION
INHIBIT SW
BACK-UP
5V DRIVER
SW
DETECTION
BACK-UP
SW
0V
4.4V
0V
5V
0V
5V
0V
5V
0V
0V
5V
5.0V
0V
5V
0V
5.0V
0V or 5.0V
0V
5V
0V
5V
0V
0V
5V
5V
0V
0V or 5.0V
0V
5V
5V
0.9V
0V or 5.0V
5V
0V
0V or 5.0V
0V
5.0V
0V
5.0V
1V
0V
5.0V
0V
4V
0V
4V
1.6V
14.4V
4.8V
0V
7.3V
0V
7.2V
7.2V
3.3V
14.4V
0V
7.3V
7.3V
7.3V
7.3V
7.2V
0V
7.2V
7.3V
7.3V
7.3V
7.3V
0V
7.3V
0V
0V
2.5V
5.0V
0V
5.0V
5.0V
∗
R118 2.2K
34
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