ICF-CDK70
ICF-CDK70
21
21
6-4. SCHEMATIC DIAGRAM - TU Board -
• See page 30 for Waveforms. • See page 30 for IC Block Diagrams.
CNP1
C20
R30
R31
C34
D2
C33
C35
C31
C30
C24
C22
C23
C37
R52
C53
C65
R91
R50
R10
C29
C27
C26
R61
R60
R59
R58
R92
C61
C62
C63
C66
C68
R94
C51
C52
R51
C59
R53
C95
C55
R54
C54
C56
C57
R65
R63
R4
R13
C1
C11
C4
CF4
CF2
C8
C10
C12
C9
C47
C39
R40
R41
C49
C41
C42
C43
R32
D1
C32
D1
1
D10
C60
C80
R24
TP
JC5
JC1
JC4
JC33
JC2
JC6
R1
JC13
JC3
JC12
JC11
L2
L1
L3
L4
IC1
TP
TP
T2
C18
D3
IC2
T1
CT1
CT3
R11
C21
R3
X1
R2
L11
C7
JC34
R56
L21
11P
0.1
22k
4.7k
R33
10k
0.01
KV1471E
0.01
C13
0.01
0.01
22p
0.01
220p
0.1
1
50V
0.01
0
0.22
4.7
50V
220
1k
47
100
10V
100p
100p
2.2k
2.2k
2.2k
2.2k
220
100p
100p
100p
100p
100p
1k
22p
10p
10k
100p
4.7k
1000p
100p
470
220
10V
1000p
1000p
10k
10k
10k
1k
47p
0.1
1000p
1000p
1
50V
4.7
50V
10p
10p
0.1
220k
10k
0.01
220p
100p
22p
100k
KV1471E
1000p
1SS355
1SS355
1000p
0.01
220
(GND)
0
0
0
0
0
0
470
R5
1k
0
0
0
0
TA2149BN
(ANT)
(VT)
220
10V
KV1520NT
LC72137M-TLM
0.022
C15
2.2k
1
50V
10k
75KHz
470
5p
0
220
GND
VT
AM OSC
FM OSC
VCC1
IF-OUT
DET
-OUT
MPX-IN
R-OUT
L-OUT
ST
-IND
QUAD
GND2
IF-IN
AM
IF-IN
FM
VCC2
AGC
LPF1
/BAND
LPF2
/MO-ST
GND1
FM
RF-IN
RF-OUT
AM
RF-IN
FM
OSC-
OUT
OUT
MIX-
CUT
AM LOW
CE
DI
CL
DO
BAND
ST
-IND
IF
IN
XOUT
XIN
LP-OUT
LP-IN
PD
VSS
VDD
MO/ST
FM IN
AM
IN
MUTE
AM IFT
FM
OSC
FM
RF
ANTENNA
AM OSC
FM/AM RF AMP,MIX,OSC,
FM/AM IF AMP,DET,MPX
FM/AM PLL
IFT
FM
AM FERRITE-ROD
R-MUTE
R-COUNT
R-CLOCK
R-DATA
R-LAT
TU-LCH
TU-6V
TU-RCH
S-GND
BAND
MW/L
W
1µH
10µH
R14
1k
R55
10k
TP (CV)
R57
100
0.022
C14
B
MAIN
J
POWER
BOARD
CN902
11
CV
CV
(Page 22)
(Page 29)
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