Kenwood KCA-R70FM Schematics
A B C D E
I
I
I
I
I
I
78
H
E
R318
3
1
2
F2
3A
F1
3A
3
MODULATOR UNIT
CN101
8
5
CN1
ACC
1
GND
14.4V
2
3
BATT
76
43
21
D5
D1
REMOCON
RESET
GND
DATA IN
DATA OU T
+6.6V
LCD
CE
LCD
CLK
LCD
RESET
R1
2.4K
C3
L1
ZD1D2
+
R2
4.7u50
C33
1000u16+1000u16
D15
R9
2.2K
2.2K
C1
R24
4.7K
R23
1K
R25
1K
R26
1K
R22
1K
Q2
Q3
22K
22K
22K
+
R8
C15
1000P
C14
27
1000P
15
C16
18
1000P
C17
16
1000P
C13
17
1000P
12.4V 6.7V
IC1
R7 10
IN
2W
+
C6
10u16
C2 0.022
BU 5V AVR
D8
GND
D303
OUT
0.6V
Q1
+
C7 1u50
22K
22K
D16
Q6
R6
22K
Q4 Q5
4.7K 4.7K
D305D304 D306
X302
C11
22P
C12
22P
4.5MHz
R33
47K
22K
22K
5.3V
R31
47K
7
8
9
10
11
12
13
15
16
17
18
27
1
XIN
2
TEST2
3
PG3
4
PG2
5
PG1
6
PG0
7
PF3
8
PF2 REQC
9
PF1 REQH
10
PF0 CHCON
11
CI2 CH DATA C
12
SO2 CH DATA
13
SCK2 CH CLK
14
PE0
15
PD3 LCD DATA
16
PD2 LCD CLK
17
PD1 LCD RES
18
PD0 LCD CE
19
PC3
20
PC2
21
PC1
22
PC0
23
PB3
24
PB2
80
R12
XOUT
PB1
25
10K
26
R11
1K
79
PB0
C8
TEST1
PA
27
1000P
4
D9
12.6V
D101
6.4V
IC101
(4/4)
4
12
14
13
11
R207 10K
2
1
3
IC101
(1/4)
R102 C104
1.5K
L
G
5
R202 C204
1.5K
R
R103
R203
6.8K
6.8K
C103
C203
0.01
0.01
10u16
C105
220u10
C339
0.1
C205
220u10
10u16
+
10K
R104
+
ISO
+
10K
R204
6.4V
+
D201
12.6V
C114
0.015
IC102
6.4V
6.4V
(2/2)
8
5
6
R109
C106
1.8K
10u16
7
+
R115
R114
6
6.8K
C112
3300P
6.8K
R116
6.8K
C113
180P
L.P.F.
0V
IC102
(1/2)
180P
C213
R216
6.8K6.8K
C214 0.015
6.4V
6.4V
C206
4
2
3
6.4V
R209
1.8K
1
+ +
6.8K
C212
3300P
R215R214
R105
10K
R107
10K
6.4V
R205
10K
6.4V
R110 390
R210 390
R106
10K
6.4V
10
9
R108
10K
R208
10K
6
5
R206
10K
R111 1K
C107 270P
C207 270P
IC101
(3/4)
IC101
(2/4)
390
R339
390
R340
6.4V6.4V
8
6.4V
7
C108
1000P
R112
75K
R343
C208
1000P
75K10u16
100
Q308
C34
1u50
6.4V
R27
10K
+
+
C20
220u25
R28 10K
C314
0.22u50
+
R314
47K
0.1
C110
C109
3
2
+
6.4V
C19
100u10
C111
1u50
+
0.1
100K
R113
Q101
Q201
C210
C211R212
0.1
100K
R213
1u50
C209
0.1
7
12.6V
IC302
(1/2)
1
IC302
(2/2)
33P
3.6V
GND
C302 0.01
5
6
0V
4.2V
OSCIN
VCC
8
4
3.2V
MPX
220P
C303
OSCIN
6
1.7V
6.4V
7
R348
7
X301
38kHz
220K
1.9V
10K
R306
6.4V
R308
150K
C310
4.7K
R307
C308
0.033
VR301
33K
3.6V
3.6V
181716151413121110
LIN
0.9V
RIN
1
2
345
0V
3.6V
3.6V
+
C301
10u16
0.01
C312
3.7V
R302
12K
C306
R301
220P
150K
FM ST
MODULATOR
4.1V
PILOT
OSCOUT
8
9
10P
C304
D14
5V AVR RIPPLE
IC4
OUT
IN
GND
+
0.6V
C24
470u16
D13
D302
270
R328
4.5V
Q303
2.5V
C336
IC301
C35 0.01
C305 0.01
2200P
R316 1.2K
R35
C32
5.6V13.6V
150
+
100u10
C335
4.7u50
FILTER
R34
1.8K
+
Q9
C30
1000u10
5.6V
+
45
R317
2.4K
Q310
4.8V
R346
3
4.7K
KCA-R70FM
JIHGF
C30
302
C12
78
EO2
ERROR OUT EO1
CD
LCD DATA IN
PA2
PA3
1000P
75
VSS
VCO IN FM IN
LCD
PA1
PA0
31
+
C31
0.047F5.5
5.3V
VDD
AM IN
IC2
u-COM
VDD +5V
PQ0
32
333435
5.3V
C9
0.01
C10
EO3
SUBPD
PP3 GAIN8
PP2 GAIN7
22P
MHz
807978777675747372717069686766
XOUT
TEST1
IN
EST2
G3
G2
G1
G0
F3
F2 REQC
F1 REQH
F0 CHCON
I2 CH DATA C
O2 CH DATA H
CK2 CH CLK
E0
D3 LCD DATA OUT
D2 LCD CLK
D1 LCD RESET
D0 LCD CE
C3
C2
C1
C0
B3
B2
PB1
PB0
25
2627282930
R11
1K
C8
10K
R12
0.01
SNS
LCTR
HOLD
HCTR
PP1 GAIN6
PP0 GAIN5
PO3 GAIN4
PO2 GAIN3
3637383940
36
65
PH1
PH0
REMOCON INT0
MUTE PK1
P-on PK2
RELAY PK3
SEP-ATT PM3
GAIN9 PN0
GAIN10 PN1
GAIN11 PN2
GAIN12 PN3
PO1 GAIN2
PO0 GAIN1
40
39
PH2
PH3
PJ0
PJ2
PJ3
PL0
PL1
PL2
PL3
PM0
PM1
PM2
PJ1
CONTROL
UNIT
CN1
1/2
915
A
13
CN102
to
CHANGER
R13
100K
ZD2
ZD4
64
63
62
PI0
61
PI1
60
59
58
57
56
55
55
54
53
53
52
51
50
49
48
47
46
45
45
44
43
42
41
ZD3
R15
100K
ZD5
R18
100K
ZD7
ZD6
C36
3300u16
R14
3.3K
R17
1K
R16
3.3K
R19
3.3K
R21
4.7K
R20
1K
DATA IN
CD POW
GND (D)
R
G
L
SCK
DAT A
OUT
REQ C
MUTE
RESET
REQ H
BATT
Rch
S GND
E
Lch
2610
37
481112
13
12
8
11
7
10
9
+
DTA124EK
DTA144EK
DTC124EK
DTC143TK
2SA1162
2SC2714
2SD2114K
NJM4565MD
DA204K
1
2
3
NJM2060M
IPPLE
ILTER
Q9
4
K
5
50
5.6V
+
1000u10
45
R317
2.4K
4.8V
R346
4.7K
36
3.3K
R318
40
R319
1.2K
C321
1u50
R320
10K
+
R322
R323
C315
78
4.7K
470
100u10
Q310 Q304 Q309Q305
IC1
IC2
IC4
IC101
IC102,302
IC301
:
UPC78M06AHF
:
LC72366-9B28
:
NJM78L05UA
:
NJM2060M
:
NJM4565MD
:
BA1405F
R337
4.7K
+
C316 0.01
39
C320
180P
R327
47K
22K
R334
R325
4.7K
+
C317
2.2u50
C318 0.01
J29
VR303
10K
10K(B)
Q1,3
Q2 2SA1782(T,U):
Q4,5,8
Q6
Q9 2SC4640(T,U):
Q101,201,304,305,308-310
Q303
Q307
R326 22K C338 5P
55
C340
22u10
+
C322
220P
VD301
C319 0.01
:
:
:
: 2SK2158
:
:
:
L301
220nH
68P
C323
20P
VC301
DTC124EK
DTC143TK
DTA124EK
2SA1162(GR)
2SK508LQ306
2SC2714(Y)
C324
15P
Q306
C325
L302 2.2uH
0.01
C326
47u25
+
R329 47
RF AMP
C328
2P
R330 330
C327 15P
L303 2.2uH
SIGNAL LINE
GND LINE
B LINE
D1,2,5,14,15
D8,9,12,13,16
D101,201,302
VD301
ZD1-7
Q307
R331 47K
DSK10C-ET1
:
1SS133:
DA204K
:
HVU306A-3
:
HZS6C2:
75
47
R333
5P
C332
C329 15P
C330 0.01
D12
53
5.2V
4.0V
C331
1P
L304 220nH
R332 100
RL1
BA1405F
RELAY
0V
4.7K
Q8
0V
ANT IN
1
2
CN104
to
R338
4.7K
L305
120nH
RADIO
1
2
NJM78L05UA
CN105
C333 33P
C334 33P
KCA-R70FM (1/2)
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.
4
5
6
7
Loading...