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6-2. SCHEMATIC DIAGRAM – TUNER Section –
ANT1
FERRITE-ROD
ANTENNA
S301
FM SENS
ANT2
FM
LOCAL
R302
LEAD-WIRE
4.7
ANTENNA
DX
L301
0.1µH
SP1
• See page 14 for Waveform. • See page 14 for IC Block Diagrams.
AM
C2
R1
R2
C6
C14
CT1
L1
0.01
10k
1M
10p
3p
AM
OSC
C3
220p
C4
220p
D1
SVC347
TP13
(FM IN)
BPF1
1
3
2
TP10
(RF GND)
C26
0.01
MIX
F.E
FM
NC
AM
OUT
GND
ANT
ANT
FM/AM FRONT-END,
FM/AM IF AMP,DET,
AGC,AF AMP
BAND
AM
FM
IC1
CXA1019M
SELECT
IFIN
IFIN
NC
METER
JC8
C16
0
1
C15
0.01
JC5
0
R10
470
R9
2.2k
T1
AM IFT
CF1
CF2
Q2
DTC114TUA
FM/AM BAND
SELECT SWITCH
C23
1
C22
TP12
470
(SP OUT)
4V
JC4
R3
0
100k
C8
1000p
L2
C11
R5
D2
1000p
100k
FM
CT2
HVU202A
RF
R4
C10
D3
L3
C9
22k
7p
HVU202A
1000p
C12
1000p
C27
R24
R25
10
100k
100k
6.3V
C32
JC9
0.022
0
C28
3p
JC3
0
C30
R11
Q3
CF3
1
47
2SA1576
MUTING
C31
2.2
35V
FM
REG
FM
AFC
AM
VOL
NF
DISCRI
GND
RF
OSC
OSC
IF
AFC(W) AFC(J)
DET
AF
RIPPLE
AF
GND
AGC
AGC
OUT
IN
FILTER
+B
OUT
GND
JC6
0
C21
C17
C18
10
4.7
10
6.3V
16V
6.3V
C20
0.22
C29
0.01
D4
DAN202UT
R23
4.7k
Q1
2SC4081
TONE CONTROL
SWITCH
TP15
C19
(AF GND)
0.01
C25
R6
R14
C24
1000
10k
10k
1
6.3V
11
11
TP9
(VT)
C36
R17
R21
0.01
10k
100k
R7
R13
C45
C46
C47
2.2k
10k
1
100p
0.01
R19
4.7k
C34
C37
C39
C42
C43
470
22p
22p
0.1
0.22
4V
RV1
50k
X1
VOL
75KHz
R20
2.2k
R12
4.7k
R8
2.2k
X
X
VSSA
A
A
PD
VSSD
VDD
FM
OUT
IN
OUT
IN
IN
CE
DI
CL
DO
BAND
BO2
BO3
IO1
IO2
L4
47µH
FM/AM PLL
IC2
C35
C38
C40
LC72122V
4700p
100p
100p
ICF-M88B
AM
IN
IF
IN
CE
DATA
CLK
DOUT
MUTE
BEEP
(Page 13)
VDD
GND
TP8
(GND)
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