Kenwood RXD-655, Service Manual

Page: 8 / 34

RXD-655/755
8
2 6 7
2
T.F
4
8
1
5
3
22 23
21
14
4
1
2
9 5 17 16
OUT
IN
GND VCC
MPX IN
AM OSC IN AM OSC OUT AM RF IN
5 3 4
21
20 1 15 22 16
6
OSC
1
3
2
9
10
7
16
15
13
12
14
11
R
L
R
L
R
L
R
L
17
3
+B4
FM OSC
AM IN
FM IN
FM OSC
FM+B
21
4
R
L
8
18
AUX
TAPE
CD
TUNER
L R
23
+B4
R
L
24
2
3
4
6
9
16
T1/T2
REC
13
4
5
7
18
VCC
1
+B3
+B3
23
14
12
21
20
P.B
H/N
17
8
15 19
NOR/ HIGH T1/T2
+B4
L
R
L
R
10
L NF
R NF
ALC
REF
R REC
R NF
L REC
POP REDUCE
R(T2)
L NF
R(T1)
L(T2)
L(T1)
+B4
+B4
REC
7
4
1
8
-B2
+B4
5
VH+
VH-
VL-
VL+
14
18
R
L
6
7
8,9
10,11
1
-B1
+B1
L-OUT
R-OUT
SP
.DET
.
12-14 25-36 15-24
4-1
1
1,2
38,39
10
6
7-9
1
2
21
56 58
59
57 55 54 49 50 48 47 46 43 42
67-78
79
80-89
90-92
93-100
52 53
51
45 44
41
40
38
39
36
37
25
33-31
34
35
11
16 13 12
17-20
+B7
+B7 +B7
+B7
+B7
VDD
VLOAD
RESET VDO
22 23 24
CE CL DO DI
VDD
AVDD
+B6
BIAS
T1/T2
REC
1
2
3
+B7
+B3
+B6
-
-
+
+
R-CH
L-CH
+B2
-B2
+B3
M10V
+B4
A10V
VF2
+B4
63Hz
30 7
-B2
4
1
8
10Hz 1K
29 28
-VF
VF1
+B6
+5V
+B5
CD+B
C801
+B7
T1/T2
P.
B
REC
P.B
4 5
VT
FM IF IN
REG
3
+B4
8 19 20 18
FM/AM
OUT
15
L
R
12
11
10
12
IF IN
13
6
SD
10
13
FM MONO/ST
11
7
STEREO
MONO/ST
IF OUT
24
IN
OUT
AFC
AM RF IN
+B4
17 FM
+B4
6
CE
DI
CL
DO
16
2 4 8 3 7
15 14 13 11 10 9
63-66
MPX IN VSSA VDDA MPX IN
RDS-ID
RDCL RDDA
RST
XIN
VDDD
VSSD
XOUT
AM RF
P-IN
POWER AMP.
IC901
TERMINAL
AM LOOP ANT
FM FRONT END
FE301
CF301
FM IF FM IF
COVERAGE TRACKING
AM AM BAND
T303 T306
T351
IC303
FM/AM IF MPX.
LA1832S
X351
456kHz
PLL(TUNER)
LC72131
IC302
4.5MHz
X352
Q360
CNS11
from CD SECTION
CNP1
LC75341
IC601
AUDIO
JK601
VIDEO/
M
IC101
Q703
Q704
Q705
54PIN
IC700
IC700
56PIN
53PIN
IC700
55PIN
IC700
MOTOR
DRIVER TAPE MECHANISM
ASSEMBLY
SOLM1,SOLM2
SOLENOID
MM1
MOTOR
TAPE
SWM2
T2 PLAY
R.PLAY
SWM4
SWM1
T1 PLAY
SWM3
F.PLAY
AN7345K
/PLAYBACK AMP.
PLAYBACK
Rch
Lch
Rch
Lch
TAPE 1
TAPE2
PB HEAD
REC/PB HEAD
SWITCHING
Q103-106
SWITCHING
108
AC BIAS
Q111
Q109
Q126
Q110
SWITCHING
Q121,122
MUTING
SWITCHING
ERASE
HEAD
Q128,L104
BIAS OSC
SWITCHING
Q124
BIAS
AM IF
863 IC860
KIA4558P
OPE AMP.
-20dB
ATT SYSTEM
MUTE
604 606
Q864,865
Q901-
FL701
DISPLAY
IC700(1/2)
SYSTEM
UPD780206
708
Q706-
MICROCOMPUTER
Q700
RESET
XL701
4.1943MHz
VR701
JOG
RX701
SENSOR
REMOTE
KEY0-2
to CD
SECTION
JK670
HEADPHONES
M
M901
FAN MOTOR
Q907
DRIVER
Q905
RL901
SO901
TERMINAL
SPEAKER
D809
T801
TRANSFORMER
F804
T5AL 250V
F805
T5AL 250V
D810
D811-814
Q803
Q850
F806
CONSTANT
VOLTAGE
T2AL 250V
KIA7810AP
REGULATOR
VOLTAGE
Q851 VOLTAGE
CONSTANT
ZD851
T2AL 250V
F807
KIA4558
MICROCOMPUTER
IC700(2/2)
OPE
AMP.
562
SYSTEM
UPD780206
ZD801
REGULATOR
KIA7805P
VOLTAGE
Q852
Q802
Q801
D804
D803
T2.5AL250V
F801
D801
CONSTANT
REGULATOR
VOLTAGE
D802-805
T802
SUB POWER
TRANSFORMER
RL801
AC POWER
SUPPLY CORD
AC 230V 50Hz
UNSWITCH 5V
VOLTAGE
MAIN POWER
AUX IN
AND RECORD
Q107,
PROCESSOR
Q603,
Q862,
Q605,
IC561,
904
ANTENNA
SO301A
Q301
AMP
FM IF
CF303
FM IF
CF351
L.P.F
L351
QT21
AMP
L341
BALUN
REGULATOR
LC72723
ICT21
4.332MHz
XT21 RDS DECODER
RXD-755/655
BLOCK DIAGRAM