Schematic Diagram - Kenwood RXD-655 Service Manual

A B
(E,T,E2)TYPE ONLY
1
ICT21
RDS
DEMODULATOR
RT31
10K
14
RT32
6.8K
15
RT21
16
2 10K
TUNER/MAIN SECTION
AM CNP301
W1
1 1
L341
2 2
3
W2
C338
1000P
4 R369
+B
15
R346
330
D303
D304
C301
SO301
(E,T,E2)TYPE ONLY
AM CNP301
2 2
1 1
5
C338
IC301
B.P.F.
1000P
FM
BF301
FRONT END
C303
10P
FM OSC COIL
FM RF
COIL
T301
C309 FM RF
6 1000P
FM
IFT
C312
0.022
R314
22
R325
47K
0.9V
(M),(M3),(M5),(X)TYPE
ONLY
7
C D
CNP701
XT21
1 2 3
4.332MHz
2.5V 9 8 2.6V
XIN XOUT
10 7
VSSD TEST
5.2V
CT26
11 6 2.6V 560P 3
+B VDDD CIN
5
12 5 2.6V
RT27
4
MODE FLOUT
1K 0V 13 4
RST VSSA
RT28 5.2V
1K 0V 14
RDDA 3
VDDA
RT29
QT21
CT29 6
2 CT28 2.0V
1K 0V 15
1.2V
MPXIN 0.022
RDCL
0.022
RT30 2.6V
1K
CT32 5.2V
16 RDS-ID/ 10u16
1
VREF
READY
+
5.2V
+B
9.3V(0V)
2.3V
(2.1V)
T303 AM TRACKING
3 2
R358
C331 3.9K
4 0.047
3.3V(3.5V)
5 C332
1 0.022
6
4.8V
2.3V(2.1V)
(5.0V)
+B
5.0V
T306 C335
560P
6 2
4 AM BAND
COVERAGE
5
1
3
FE301
CF302
FM 2.2V
FRONT END
L342
+B
2.2uH
8.3V
Q301
0.7V
T351
AM IFT
5.4V
+B C384
1000P
R382
150
1/4W TP301
C393 R380
1u50 1.5K
+
C381 IC302
R309
12P
10K 2.5V
PLL
T302
C382
15P 2.5V
+B
R316
C318
2.6V 100P 4.7K
Q302
OSC
9.3V(0V)
BUFF.
+B +B
E F
1
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 13 12 11 10 9 8 7 6
C605
4.7u50
5.0V
+
-13.1V
15V
+12V
SW601
9KHz/ 10KHz/
50KHz 100KHz
R364
2.2K
L354 R363
2.2K
TP
W3
FM IF
DET/FM
MPX/AM
IF 1.3V
2.2V
IC303
2.6V
2.3V
(1.5V)
(0.2V)
3.7V
2.2V
(1.9V)
C358
1u50
+
C357
2.2u50 R355
+
3.3K
5.0V
+B
10
C370 1u50
+
2.4V (0V)
ZD351
R395 C396
47K 100u10
+
L351
C395
100uH 0.022
5.1V
0V
R392
(2.5V)
0.8V 270 1/4W
R391
270 1/4W
Q360
+B
FM R383
SW 5.6K
ST IND
ON : 0V
OFF : 5.1V
ST :
3.9V
MONO :
R368 R387
0V
22K 5.6K
+B
+B
G H
2
CNS901
5 4 3 2 1
R609 R607 C613
330 10K 10u50
SYSTEM MUTE
-20dB ATT
Q605 Q603
R621 R615
R605
2.2K 2.2K
3.9K
R622
2.2K R616
2.2K
Q606
Q604
MUTE ON : 1.3V
OFF : 0V
R610
330
C123
2200P
R617
10K
C642
+12V
47P
Q850 +12V AVR
20.0V 12.2V
+B
C856
19.9V 100P
R869
12.7V
R855
Q851
5.6K
3.3
1/2W Q863
IN OUT +B
R868
GND 5.6K
+10V
AVR
Q862
LVL-CTRL
Q852
R871
CD : 9.8V 5.0V 10K
5.2V
IN OUT +B
GND R870
Q865
+5V
2.2K
AVR
-13.1V
15V
+B +B
+B +B
LG1
C153
PLAY : 8.0V
REC : 9.8V 100u16
+
R115
4.7K
R113 R114
10K 10K
MECHA BASE
Q109
CNP101
R102
T1 R 1K
PLAY : 7.3V
1 1
R-ch REC : 9.8V
Q103-109
SWITCHING
A GND
2 2
R101
1K
L-ch T1 L
3 3
TAPE 1
Q104 R104
PLAYBACK
2.2K
HEAD CNS102
ERASE M GND R106
C106
1 1
3.3K
HEAD ERASE 180P
ERASE
2 2
TAPE 2 T2 R2
Q106
3 3
Rch
A GND
RECORD/
4 4
PLAYBACK T2 R1
5 5
HEAD
Lch
T2 L1
6 6
T2 L2
7 7
Q105
R105
C105 3.3K
180P
R103
2.2K
Q103
I J
AUDIO PROCESSOR
IC601
C644
220P 1 D1
C645
220P 2 CE
3 VSS
CCB
5.0V 4 L OUT
+
INTERFACE
C609
0.12 5.0V 5 L BASS
C611 5.0V 6 L TRE
1500P
C619
1u50
5.0V 7 L IN
+
C621
4.7u50 L SELO
5.0V 8
+
C623
1u50 5.0V 9 L4
AUX
+
C625
1u50 5.0V 10 L3
DECK
+
C627
1u50 5.0V 11 L2
TUNER
+
C629
1u50
12 L1
CD
+
5.0V
R624
R879
OPE AMP
22K
C866
1000P IC860
R878
D862
22K R873 -10.2V 1 8
VCC
1K 3.1V 2 7
0V
D861
6
Q864
5
R867
100K 0.6V 3
4
-15V
-11.6V
R866 330
1/4W
+B
+B
8
W7
R120 C116 C118
56 100u25 R174 0.033
PLAY : 3.9V +
1K
REC : 0V
R118 R122
C114 L102
1K 100K
330P 2.2uH
C112
330P 0.5V
REC/PLAY
REC : 9.8V
PLAY : 0V
Q110
0V 0V
112K
Q111
Hich=T1
0V 112K
Q108
0V
0V C111 0V 0.5V
330P
L101
R117 C113 R121
2.2uH
1K 330P 100K
R119 C115 R173 C117
Q107
56 100u25 1K 0.033
+
W5
R125
5.6K