Page 1
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.
!
Page 2
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
Page 3
K L M N O
1
2
3
4
5
6
7
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
RF GND
FM+B
1
2
RF GND
10u16
C450
+
270
R450
10u16
C451 R451
R454
100
R452
30K
Lch
R453
30K
R455
100
+
270
Rch
0.01
23
24
25
26
0.01
C151
47u10
C150
+
L3 4.7uH
∗
C158
R150 4.7K
0.1
C155
C153 0.015
C154 0.22
0.033
150P
C157
C156
7
5
6
0.22
0.22
24
IF1 GND
IF2 GND
0.01
C202
0.01
C204
22K
R203
22K
R201
1K
R202
1K
R200
R205
150
35
34
36
4.7uH
76
32
C209 47u10
+
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
+
R62
100u10
C58
+
1K
R64
1K
R63
R65
2.2 1/2W
R66
2.2 1/2W
R207 2.7K
R206 4.7K
3
4
+
0.022
4
C7
120K
R7
100u10 100
+
100P
C5
C9
R5 6.8K
R3
L IN
8
L NF
L OUT
7
6
C3
47u6.3
3
10
R250
120K
R8
C250
100u10
R6 6.8K
+
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
40
39
37
38
2827262524
23
22
212018
171615
AC OUT L
AC OUT R
OUT LF
OUT RF
OUT LR
OUT RR
VDD
GND
SDA
S MUTE
QUAL
MUX R
MUX L
1
2
34567
8
9
101112
13
14
VREF
CREF
TAPE L
TAPE R
CDR
CDGND
CDL
PH-
PH+AMMPX
LEVEL
MP IN
MP OUT
C14
C13
L4
52mH
C452
T.MUTE
GND
MOT GND
MOT+B
GND
PACK IN
Lch
1
2
FWD
REV
Rch
Ref.99
6
3
4
5
10K
Q54,55
Q150
19
SCL
1u50
C152
+
41
0.1
C506
78
1K
∗
R160
L6
4.7uH
4.7uH
L7
L10
0.01
C214
1
2
3
4
5
6
7
8
QUAL
RDDA
VREF
MPX
OSEL
GND
ARI
FILOUT
16
15
14
13
12
11
10
9
RDCK
T57
OSCO
OSCI
VCC
EXTRES
TM
TSEL
R501 2.2K
R502 2.2K
R500 2.2K
C500 10u6.3
+
4.7K
R504
330P
C501
L12
4.7uH
X2
4.3320MHz
C504 10P
C505 10P
10u6.3
C503
+
0.01
C502
R503
1K
Q450,451
Q503
502
Q501,
Q500
Q56,57
5
6
62
47K
R252
W200
L8
4.7uH
58
+B
+B
+B
+B
+B
+B
+8V +8V
+8V +8V
+5V
+8V+8V+8V
+8V +8V +8V
+8V+8V
+8V
P5V
P5V
P5V
P5V P5V P5V
P5V
IC5
IC2
A
ME1 (D40-1136-05)
IC7
4.7K
4.7K
22K
22K
47K
22K
47K
22K
22K
22K
10K
∗
A1
REAR PRE OUT
Q450J5Q451
Q150
Q201
D200
Q203
ANT
J1
CN1
Q55
Q54
D55
Q56
Q57
SW
∗
D
∗
E
8V
IC1 :
IC2 : TDA7400D
IC3 : HD74HC27FP
∗
IC4 : TDA7386
IC5 : LA3161
Q49,50,52,57,61,500,503
: 2SC2412K or
2SD601A
Q51,261 : 2SB1443
Q53 : 2SA1036K
Q54,58 : DTC144EK or
KRC104S
UN2213 or
Q55,59,153,352,502
: DTA124EK or
UN2112 or
Q56,60 : 2SA2057 or
2SB1548(P) or
Q201,203,350 : 2SB1277(Q,R)
Q301 : DTA144EK or
UN2113
Q320,351 : 2SA1037K
Q450,451 : DTC143TK or
UN2216
D50 : 1N5393G-M6 or
S2V20
∗
A
D51,405,410 : MA4068(N)-M or
HZS7A3L
D52,200 : MA4051(N)-M
D53,260,261,351,370,371
:
AM01Z or
ERA15-01
D54
: MA4056(N)-M
D55
: MA4091(N)-L
D56
: MA4110-L
D100,150-152,352
: 1SS133
J1
X16-
2/2
Q150
UN2212 or
DTC124EK or:
Q151,260,353
UN2214 or
KRA103S
2SB1655(E,F) or
2SB1565(E,F)
KRC103S
KRC107S
DTC114YK or:
MA4062-L
D400,401,404,408,409
:
HD1
S3
M
M1
S1
S2
8V
DRIVER
EQUALIZER
AMPLIFIER
E-VOLUME
MUTE SW
PRE OUT
FM+B
SW
AM+B
SW
FRONT END
E-VOL
MUTE SW
Q501
Q502
∗
Q503
Q500
PST9135NR
TDA7479D
IC6
IC7
:
:
DTC114TK orQ501 :
UN2215
RDS DECODER
NOISE
BUFFER
AFC TIME
CONSTANT SW
OUTPUT
AUDIO
BUFFER
DSM1SD2 or
D380 MA4047-M:
B LINE
GND LINE
SIGNAL LINE
1.3V
0.8V
3.5V
0V
8.0V
3.5V
0.8V
1.3V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
5.0V
0V
3.5V
0V
8.0V
4.0V
0V
4V
0.3V
3V
2.4V
2.4V
5.0V
0V
0V
5.0V
∗
C
0-21
100P
MODEL NAME
KRC-294YA/YG (E)
UNIT NO.
2-70 100P
R103C158
KRC-27YA/YG (E)
KRC-294A/G (E)
KRC-266RG (M)
YES
YES
IC1
UPD780058GC465
2-71
KRC-17YA/YG (E)
KRC-194YA/YG (E)
NO 100P
NO
NO
YES
YES
NO
YES
R104
UPD780058GCxxx
R107,108,
125,160
UPD780058GC172
UPD780058GC465
KRC-194A/G (E)
KRC-17G (E)
YES
YES
YES
0-22
KRC-266LA/LG (M) YES 0.1 YES
R102
YES
YES
YES
NO
R101
NO
NO
NO
YES NO
YES
YES
YES
NO UPD780058GC425NO
2-73
KRC-2904YA/YG (E) NO 0.1 NOYESNO YES NO UPD780058GC425NO
(X14-687X-XX)
ADE
YES
YES
YES
YES
NO
C
R118
NO
NO
NO
NO
YES
R161
YES
YES
YES
YES
NO
YES
YES
C163
YES
YES
NO
X86-3322-70
X86-3322-70
A1
X86-3322-70
X86-3322-70
X86-3282-72
YES
YES
YES
Q503
NO
NO
YES
YES
YES
Q153
YES
NO
KRC-266RG/LA/LG
KRC-294YA/YG/194YA/YG/27YA/YG/17YA/YG
KRC-294A/G/194A/G/17G/2904YA/YG (1/2)
Page 4
P Q R S T
1
2
3
4
5
6
7
0V
5V
5.0V
3.3V
1.7V
0V
5.0V
5V
3.3V
0V
5V
0V
5V
1.7V
3.3V
5V
0V
0V
5V
0V
5V
5V
0V
IC1
SWITCH UNIT (X16-1512-7x)
A
B LINE
GND LINE
J1
Q1
D14 :
∗
D1-13,15 :
∗
Q1 : DTA114EK
IC1 : LC75883E
J3
X14-
1/2
LCD DRIVER
DETECTION
PANEL
ED1
RST
∗
D14
∗
D12
∗
D9
∗
D6
∗
D4
∗
D1
∗
D15
∗
D13
∗
D10
∗
D7
∗
D5
∗
D2
∗
D11
∗
D8
∗
D3
D17
: MA3062-M
D17
ED1
+5V +5V
+B
+B
+B
+B +B
12
11
10
9
8
7
6
5
4
3
2
1
PANEL SW
L-DATA S
L-CLK
L-CE
L- DATA L
L-RES
u-GND
PAN 5V
RST
ILL-GND
ILL+B
ESD-GND
6463626160595857565554535251504948474645444342
41
1
2
34567
8
9
101112
1314151617
1819202122
23
24
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
KS6
KS5
KS4
KS3
KS2
KS1
COM3
COM2
COM1
S55
S54
S53
S52
S51
S50
S49
S48
S47
S46
S45
S44
S43
S42
KEYS4S5S6S7S8S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
KI1
KI2
KI3
KI4
KI5
VDD
VDD1
VDD2
VSS
TEST
OSC
RES
DATA L
CE
CL
DATA S
KI1
KI2
KI4
KI3
C3 0.047
C1 1000P
C2 0.047
R7 56K
C4 0.01
R21 4.7
R8 1K
R9 47K
79
80
78
76
77
78
77
79
76
R6 100
R3 100
R5 100
R4 100
R2 1K
80
KS5
456
7
8
9
101112
1314151617
18
19
202122
23
KS4
KS3
KS2
KS1
C3
C2
C1
555453
52515049484746
454443
42
PL2 PL1
13
13
R18
470
R15
470
R14
330
R13
R12
330
R10
470
R11
330
R17
3
3
10K
10K
C
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
765
432
1
COM1
S55
S53
S54
S51
S52
S49
S50
S48
S46
S47
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
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
20
19
18
17
16
15
14
13
12
11
10
9
876
543
2
1
S15
S14
S13
S7
S8
S6
S9
S5
S11
S10
S12
S4
COM3
COM2
COM1
S55
S53
S54
S51
S52
S49
S50
S48
S46
S47
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
25262728293031323334353637383940414243444547464850495251545355
4
12
10
11
59687
13
14
Page 5
U V W X Y
1
2
3
4
5
6
7
0V
5V
0V
5V
1.7V
3.3V
MODEL NAME
KRC-266LA (M)
UNIT NO.
2-70
KRC-294YA (E)
KRC-194YA (E)
KRC-27YA (E)
KRC-17YA (E)
KRC-294A (E)
KRC-194A (E)
KRC-2904YA (E)
2-71
KRC-294YG (E)
KRC-266RG/LG (M)
KRC-194YG (E)
KRC-27YG (E)
KRC-294G (E)
KRC-17YG (E)
KRC-194G (E)
KRC-17G (E)
KRC-2904YG (E)
(X16-1512-7X)
B30-1566-05
D1-13,15
B30-1565-05
B30-1511-05
D14
B30-2025-05
KRC-266RG/LA/LG (2/2)
KRC-294YA/YG/194YA/YG/27YA/YG/17YA/YG (2/2)
KRC-294A/G/194A/G/17G/2904YA/YG (2/2)
2
1
CLK ATT
AM6
5
VOL+
FMAUDIO
AUTO VOL-
T.UP
43
T.DOWN
SRC
444342
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
21
22
23
24
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
S21
S22
S23
S24
25
21
22
23
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
44
43
42
41
KS1
KS2
KS3
KS4
KS5
KI4
KI3
KI2
KI1
C1C2C3
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
S19
S18
S17
S16
S15
S14
S13
S7
S8
S6
S9
S5
S11
S10
S12
S4
COM3
COM2
COM1
S55
S53
S54
54
53
52
51
S23
S22
S21
S20
50
49
48
47
46
45
44
43
S19
S18
S17
S16
S15
S14
S13
S7
54
53
52
51
S23
S22
S21
S20
7
1314151617181920212223
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.
!
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