RXD-251
Y39 -2930 -11
RXD-251/301/351/371S/A3
A
1
2
3
4
5
6
7
B C D E F G I K M OH J L N
TUNER UNIT RXD-351(J,X1,Y1,M1), RXD-A3(K1,P1), RXD-251(X2,M3), RXD-371S(M2)
IC102
IC201
IC101
RXD-371S(M2) (1/5)
RXD-251(X2,M3) (1/5)
RXD-A3(K1,P1) (1/5)
RXD-351(J,X1,Y1,M1) (1/5)
+B
CANADA
U.S.A.
P1
K1
COUNTRY
DESTINATION
AUSTRALIA
GENERAL MARKET
JAPAN
PX
M1
X1
J
Y1
NO MTZ5.6B
ABB.
H,J
A,D,E,
D110
YES
F,I
B,C,
YES
G
NO
YES
D111,
112
C100A,147,
YES
221-223
2.2P
C110
470P
C116
0.015 1u50
C143 C171
0.1
C166,
NO
216,217
R115
22
1/2W
R130
150
3.3K
R134
NO
219
R150,
NO
R151
YES
R220
DESTINATION
COUNTRY
C143
1u50
D111,
YESNO MTZ5.6B YES
B,C,
ABB.
F,IG,H,J
A,D,E,
D110
112
0.022YES 2.2P 470P
C100A,147,
221-223
C110 C116
NONO 22 3.3K
150
1/2W
NO
R115 R134R130
219
R150,
YES
R220R151
COUNTRY
DESTINATION
R150,C100A,147,
A,D,E, B,C,
D111,
1u50
C143
YESNO
ABB.
G,H,J F,I
YESMTZ5.6B
D110
112
2.2PYES
221-223
C110
470P 0.015
C116
NO22
R115
NO3.3K
1/2W
R134
150
R130
219
YES
R220R151
AUSTRALIA X2
GENERAL MARKET M3
GENERAL MARKET
DESTINATION
COUNTRY
C143
3.3u50
D111,
NO
B,C,
M2
YES
ABB.
F,IG,H,J
A,D,E,
MTZ6.2B NO
D110
112
NO 4.7P
221-223
C100A,147,
C110
0.01510P
C116
YES27P0.022 47
214
C213,
C171 R115
100
10
1/2W
YES
R134R130
219
R150,
NO
R220R151
X3AUSTRALIA
C117
20P
C130,
131
24P
C213,
214
2.2K
R161
20P
C117
C130,
131
C166,
216,217
0.1
C171
24P
214
C213,
R161
2.2K
JUMPER
YES
JUMPER
YES
20P
C117
131
C130,
24PNO 0.1
C213,
214
216,217
C166,
C171
2.2K
R161
YES
JUMPER
C130,
131
C117
5.6P
C166,
YES
216,217
R161
4.7K
JUMPER
NO
NO
Q110,
111
Q110,
111
NO
111
NO
Q110,
Q110,
2SC2878A
111
DTC114YS
G
NO
YES
RXD-301/351
RXD-A3
RXD-251
RXD-371S
+B LINE
VCC
STEREO
IF
FM
GNDREG
DRIVE
TUNING
COMP
BUFF
FM
DET
IF
FM
AM
AM/
FM
SW
OSC
AM
LEVEL
DET
BUFF
ALC
AGC
AM/
S-CURVE
FM
IF
AM
DET
AM
AM
MIX RF.AGC
AM
MUTE
PHASE DET
VCO
PILOT
DET
STEREO
FF FF FF
DRIVE
TRIG
SW
DECODER
470
R119
3.3K
R120
20P
C124
1K
R211
4.7K
R210
100P
C209
100P
C210
C214 C213
20P
C117
470P
C116
10P
TC102
1
75 OHM
GND 2
3GND
(MW/SW)
4
L104
L105
CF104
CF103
T102
1
2
3 4
5
6
X201
7.2MHz
DI
CE
X IN
OUT0
SYC
DO
CL
IN1
IN0
OUT2
OUT1
OUT3
DIVIDER
SHIFT REGISTER LATCH
2
1
PROGRAMMABLE
12bit
1/16, 1/17 4bit
SWALLOW COUNTER
COUNTER
UNIVERSAL
CHARGE PUMP
PHASE DETECTOR
DIVIDER
REFERENCE
X OUT
VSS
PD2
FM IN
VDD
PD1
AM IN
OUT6
OUT5
LCTR
HCTR
OUT4
3
2
1
6
5
4
1
2
4
5
3
6
FM
C131
47mH
L107
C151
1500P
47mH
L108
C152
1500P
1u50
C129
+
2
1
TP1
CF105
1000P
0.01
C134
4.7K
1000P
4.7K
1000P
21
18
16
14
13
15
17
19
20
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
0.47u50
C137
+
3.3K
R122
3.3u50
C135
+
0.022
R134
8.2K
R123
0.022
0.047
10u50
+
R118
100
15P
2.2u50
C122
+
1u50
C123
+
C119
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
47u16
+
0.01
56P
C145
6.8K
C144
0.01
C143
+
2.2K
R133
L203
47uH
0.022
C153
R212
22u16
+
0.022
C160
100u16
C118
+
R138
4.7K
C217
0.022
R140
C147
0.022
100u16
C140
+
0.022
C139
1K
R131
100u16
C142
C141
0.022
+
3
2
4
Q107,108
1
3
2
4
6
5
100K
R114
100K
R113
0.1
C114
1000P
1K
R145
2
TP2
1
GND
VT
R104
100
CF101
6.8K
R107R106
1.5K
0.022
C107
R105
1K
R108
330
0.022
C108
CF102
ST IND
Lch
GND
Rch
DO
CLK
CE
+12V
2
1
4
DI3
5
6
8
7
9
MUTE10
5
4
3
2
5
12
3.6K
C133
R129
C132
R128
100P
C211
R146
1000P
R121
3.3K
1u50
+
1u50
+
15K
R149
C223
220P
C222
220P
C221
220P
R217
1K
R216
1K
R218
1K
C171
R161
10K
0.01
C150
0.1
C166
RFI N
BYPAS
MIX IN
AFC GND
GND
IF OUT
AFC
OSC
VCC
1
2
3
4
5
6
7
8
9
TC101 10P
0.022
C104
1K
R102
100K
R101
L102
T101
1
2
3
6
5
4
6
5
4
1
2
3
22
R103
18P
C105
33K
R110
C110
R111
1K
100K
R109
56P
C111
L103
0.1
C100A
100P
C112
2
3
1
4
5
L101
1000P
C101
100P
C155
R214
0.022
C106
R112
100
AM
FM
BAND
HF
LF
HF
LF
QUENCY
FRE-
7.3V
1.1V
7.0V
1.2V
VOLTAGE
VT
43
TC102
2
1
L104
5
10P
6
L201
3
2
4
1
5
C169
0.022
47mH
L106
0.01
C164
2.2M
R208
100K
R114
100K
R113
100K
R154
0.022
C165
0.022
C166
1K
1/4W
R153
3 4
2
1
L105
6
5
10
R157
20P
C117
47K
R156
2.2M
R155
470P
C167
C202
4700P
2.2M
R209
R158
4.7K
1/4W
3 4
L202
1
2
6
5
10
R204
4.7K
R162
C201
560P
R201
1K
TC201
10P
R100
4.7K
R202
4.7K 47mH
L204
4.7K
R205
4.7K
R203
0.022
C204
4.7K
R207
C170
0.01
4.7K
R160
47uH
L205
47u16
C205
+
A
B
JUMPER
10P
C116
470
R151
R150
2.2M
JUMPER
C128
C138
IF
GND
C130
6800P
C164
C165
6800P
C174
6800P
6800P
C175
C215
C162
C161
R126
3.3K
R127
3.3K
C157
100
1/4W
C121
1u50
C125
+
10K
C208
C207
R206
4.7
1/4W
R115
10K
R213
R130
1/4W
C126
C149
C127
10 1/4W
R219
R220
10 1/4W
220P
C220
0.022
C212
100P
C212
12
1000P
C102
R132
GND LINE
SIGNAL LINE
I
J
C216
0.022
AM
-CN101
AUDIO
4/5
+B
+5V
+5V
+B
+5V
+B
+B
+5V +5V
+B
+5V
+12V
+B
+B
+B
+B
+12V
+5V+5V +5V +5V
+12V
+B +B
+12V
+B
+B
+12V
+B
+12V
+12V
2.1V
(5.0V)
4.4V
2.4V
(3.6V)
4.5V
(5.0V)
3.4V
(1.4V)
3.3V
(0V)
2.1V
2.1V
TUNED: 0V
MONO: 4.7V
ST: 0V
4.3V
(5.0V)
(3.7V)
2.9V
2.1V
(1.1V)
2.1V
(1.9V)
1.5V
(1.1V)
2.7V
(0.6V)
2.0V
2.1V
1.3V
1.3V
0V
(2.5V)
0V
(0V)
2.3V
(5.5V)
0V
0V
0V
3.3V (0V)
4.1V
2.1V
2.0V
0V
0V
0V
OFF: 2.3V
MUTE
ON: 0V
OFF: 0V
MUTE
ON: 4.5V
MONO: 0V
ST: 3.2V
11.5V
11.5V
1.0V
5.0V
(5.6V)
5.0V
(5.5V)
1.3V
(0V)
5.0V
1.0V
0.6V
0.7V
2.4V
0.1V
0.7V
3.8V
4.1V
4.5V(5.0V)
ANTENNA
JK101
D101
D102
AM ANT
COIL
MW OSC
COIL
AM IFT
AM/FM
/MPX
SYSTEM
IC
PLL
IC102
IC201
Q101
Q105
Q106
Q107,108
Q109,115,116
D101,102,105,111,112,202
: 2SK161(GR)
: DTC114YS
: 2SC945(Q)
: LC7218
: DTA114YS
: 2SC1675(L)
: LA1831
: 1SS133
Q108
Q107
Q109
Q105
D202
D110
Q106
MUTE
CONTROL
L.P.F
AM RF
AMP
D108
D112
D111
Q101
IF
AMP
CN101
D106
FM RF
COIL
D105
(1/2)
FM IFT
FM OSC
IC101 : LA1186N
Q102
: 2SC1674(L)Q102
RF AMP
COIL
F
AM ANT
COIL
(2/2)
D106
D108 D108
(2/2) (1/2)
Q110
COIL
MW OSC
Q111
Q112
Q202
COIL
SW ANT
Q114
Q100
Q203
COIL
SW OSC
Q204
Q201
Q113
Q110 Q111
G
Q116 Q115
H
E
D
C
COIL
FM ANT
Q113,201
Q100,114
Q112,202-204
: DTA144ES
: 2SC2001(L)
: 2SC2878A
D110
D106
D108 : KV1581A
:
: KV1340A
:Q110,111
A
CAUTION: For continued safety, replace safety critical components only with manu-
facturer's recommended parts (refer to parts list). indicates safety critical compo-
nents. For continued protection against risk of fire, replace only with same type and
rating fuse(s). To reduc e 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.
MODE CARRIER
MODULATION
ANT INPUT
FREQUENCY DEVIATION
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot) 60dB
AM 1000(999)kHz 400Hz MONO 30% MOD 60dB
The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru -
ments used or on the product. The val ue shown in ( ) is actual reading mea-
sured in the AM mode.
1
P R T V X Z AB ADQ S U W Y AA AC
3
5
7
2
4
6
Y39 -2930 -11
RXD-251/301/351/371S/A3
470
R119
3.3K
R120
20P
C124
1K
R211
4.7K
R210
100P
C209
100P
C210
24P
C214
24P
C213
1
75 OHM
GND 2
3GND
AM 4
CF104
CF103
T102
X201
7.2MHz
DI
CE
X IN
OUT0
SYC
DO
CL
IN1
IN0
OUT2
OUT1
OUT3
DIVIDER
SHIFT REGISTER LATCH
2
1
PROGRAMMABLE
12bit
1/16, 1/17 4bit
SWALLOW COUNTER
COUNTER
UNIVERSAL
CHARGE PUMP
PHASE DETECTOR
DIVIDER
REFERENCE
X OUT
VSS
PD2
FM IN
VDD
PD1
AM IN
OUT6
OUT5
LCTR
HCTR
OUT4
3
2
1
6
5
4
1
2
4
5
3
6
FM
0.015
1u50
+
47mH
L107
C111
1500P
0.015
1u50
+
47mH
L108
C112
1500P
3.3K
3.3K
1u50
C129
+
2
1
TP1
1
2
3
6
5
4
C152
1200P
R121
3.3K
CF105
180P
C138 0.01
C151
4.7K
1000P
4.7K
1000P
0.47u50
C137
+
3.3K
R122
3.3u50
C135
+
0.022
22uH
L110
10P
C156
3.3K
R134
R123
0.022
0.047
10u50
+
R118
100
C121 15P
2.2u50
C122
+
1u50
C123
+
1u50
+
C148
0.1
C103
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
47u16
+
0.01
56P
C145
R214 6.8K
C144
0.022
0.47u50
C143
+
3.3K
R133
L203
47uH
0.022
C153
10K
22u16
+
0.022
C160
100u16
C118
+
22
R137
10K
C212
100P
R140
150 1/2W
R130
C220
220P
10K
100u16
C140
+
0.022
C139
1K
R131
100u16
C142
C141
0.022
+
10K
C125
R115
3
2
4
Q107,108
OSC 3
5
6
7
8
2
1
4
0.1
0.1
C150
1K
R145
2
TP2
1
GND
VT
R104
220
CF101
L102
22uH
C101
+
0.022
C106
R103
L103
22uH
100
R112
6.8K
R107
R106
1.5K
330
R141
0.01
C154
0.022
C107
R105
1K
R108
330
0.01
C108
CF102
ST IND
Lch
GND
Rch
DO
CLK
CE
+12V
2
1
4
DI3
5
6
8
7
9
MUTE10
5
4
3
2
5
16
16
C133
R129
C132
R128
100P
C211
R213
C114
0.1
R114
100K
5
2
TC102
10P
3 4
R113
100K
L104
1 6
L105
2
C117
20P
3
C116
470P
1
5
4
6
2
3
1
L201
4
5
6
TC201
30P
10P
C206
R203 47K
C202 0.022
10K
R204
R202 22K
R201 22K
10K
R205
TC202
30P
C204
10P
1
2
3
L202
4
6
5
180P
C203
0.022
C147
22K
R207
10K
R208
100K
R206
0.022
C205
0.022
C201
5
8
2
1
6
4
7
3
ABB.
U.K.
DESTINATION
COUNTRY
EUROPE
T2
E3
68 1/2W
NO
YES
8.2K
C101
3.6K
R140
100u16
R123R103A
68 1/2W
R103
DESTINATION
COUNTRY
EUROPE
ABB.
E4
A
NO 100u16
R123
8.2K
R140
3.6K
C101
33 1/2W
R103
DESTINATION
COUNTRY
RUSSIA
ABB.
Q2
A
NO 220u16
R123
18K
R140
5.6K
C101
15K
R149
C130
C131
C161
C162
B
C128
GND
IF
C208
C207
R212
C215
C127
C149
C126
R132
R126
R127
100
R146
1000P
C157
B
B
YES
B
NO
YES
YES
VCC
GND
IF-OUT
VT
GND
ANT
IF-OUT
GND
VCC
OSC
VT
GND
GND
ANT
L106
22uH
1000P
C102
BAND
AM
FM
VOLTAGEQUENCY
LF
HF
LF
HF
1.1V
7.3V
1.2V
7.0V
VTFRE-
10K
R220
+B
2
1
3
5
4
11
10
9
8
7
12
AMAM
24
23
22
AM
OSC
ALC
BUFF
20
21
RF.AGCMIX
AM AM
19
18
AGC
IF DET
IF
LEVEL
DET
S-CURVE
FM
DET
FM
BUFF
FM
AM/
IF
COMP
TUNING
DRIVE
AM
REG GND
FM
STEREO
17
16
15
14
DECODER
MUTE
DRIVE
STEREO
13
SW
TRIG
FFFF
VCO
AM/
SW
FM
PHASE DET
PILOT
FF
DET
VCC
DESTINATION
COUNTRY
RUSSIA NO
Q1
A
ABB.
R123
33 1/2W
R103
YES
B
18K
C101
220u165.6K
R140
YES
DESTINATION
COUNTRY
DESTINATION
EUROPE NOE2
A
ABB.
COUNTRY
U.K. T1
EUROPE NOE1
A
ABB.
8.2K
R123
68 1/2W
R103
YES
B C101
100u163.6K
R140
8.2K
R123
NO
68 1/2W
R103
YES
B
100u163.6K
R140 C101
+5V
+B
+5V
+B
+B
+5V
+5V
+5V
+B
+5V
+B
+12V
+5V
+B +12V
+B+B
+B
+B
+B
+5V
+12V
+12V
+B
+B
+5V
+B
+B
+B
(Q) TYPE ONLY: FE101 (FE340-P01)
EXCEPT (Q) TYPE: FE101 (TFFJ4E553X)
B
IC102
RXD-301W(Q2)/351W(Q1) (2/5)
RXD-301E(E4)/351E(E2) (2/5)
RXD-301(E3,T2)/351(E1,T1) (2/5)
IC201
TUNER UNIT RXD-301(E3,T2)/351(E1,T1), RXD-301E(E4)/351E(E2), RXD-301W(Q2)/351W(Q1)
+B LINE
GND LINE
SIGNAL LINE
-CN101
AUDIO
4/5
ANTENNA
JK101
D101
D102
AM IFT
AM/FM
/MPX
SYSTEM
IC
PLL
IC102
IC201
Q101
Q105
Q106
Q107,108,205
Q109
D101,102,111,112,202
: 2SK161(R)
: DTC114YS
: 2SC945P/Q
: LC7218
: DTA114YS
: 2SC1675(L)
: LA1831
: 1SS133
T101
Q108
Q107
Q109
Q105
D202
D110
Q106
MUTE
CONTROL
L.P.F
RF
AMP
Q101
IF
AMP
CN101
COIL
A
COIL
MW OSC
D108
AM ANT
COIL
LW ANT
LW OSC
COIL
Q204
Q202Q203
Q205
D201
Q201
MIX
MIX
RXD-301
RXD-301E
RXD-301W
D112
D111
: 2SC2001L
: 2SC945P
: 2SA733P/Q
Q203,204
Q202
Q201
D110 : 5.6V
D108 : KV1561A-2
D201 : 1SS176T
RXD-351W
RXD-351E
RXD-351
4.4V
(5.0V)
2.1V
2.1V
2.1V
MONO: 4.7V
TUNED: 0V
ST: 0V
(5.0V)
4.5V
(3.6V)
2.4V
(1.4V)
3.4V
3.3V
(0V)
0V
(1.1V)
2.1V
(1.1V)
(1.9V)
1.5V
2.7V
(0.6V)
2.0V
2.1V
1.3V
1.3V
2.1V
(5.0V)
4.3V
2.9V
(3.7V)
0V (2.5V)
2.3V (0V)
(5.5V)
0V
0V
0V
3.3V (0V)
MONO: 0V
ST: 3.2V
4.1V
2.1V
2.0V
0V
0V
0V
OFF: 0V
ON: 4.5V
MUTE
MUTE
ON: 0V
OFF: 2.3V
11.5V
1.0V
5.0V
(5.5V)
1.3V
(0V)
5.0V
0.6V
1.0V
0.7V
3.8V
0.1V
4.1V
CAUTION: For continued safety, replace safety critical components only with manu-
facturer's recommended parts (refer to parts list). indicates safety critical compo-
nents. For continued protection against risk of fire, replace only with same type and
rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance
measurements shall be ca rried out (exposed parts are acceptably insulated from
the supply circuit) before the appliance is returned to the customer.
MODE CARRIER
MODULATION
ANT INPUT
FREQUENCY DEVIATION
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot) 60dB
AM 1000(999)kHz 400Hz MONO 30% MOD 60dB
The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading mea -
sured in the AM mode.
2SD882 DTA114YS
DTA144ES
DTC114TS
DTC124ES
DTC114YS TC4066BP
NJM4558L UPC1237HA LA1831 LC7218
2SA733
2SA988
2SC1674
2SC1675
2SC1841
2SC2001
2SC2878A
2SC945
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