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ICF-CD73/CD73V
18
18
6-2.
BLOCK DIAGRAM – TUNER Section (ICF-CD73) –
20
21
CF2
FM/AM PLL
IC2
CF4
10
13
L2
FM VCO VOLTAGE
L4
AM VCO VOLTAGE
CT1, L1
FM TRACKING
CT3, L3
AM TRACKING
T1
AM IFT
LOW-PASS
FILTER
• SIGNAL PATH
: FM
: AM
X1
75kHz
CT3
L1
FM RF
11
12
18
6
CT1
D1
L4
AM OSC
L2
FM OSC
14
ANT1
FM LEAD WIRE
ANTENNA
10
9
7
13
8
17
16
17
18
D2
D3
(1/2)
D3
(2/2)
T1
AM IF
• R-ch is omitted due to same as L-ch.
PLL DATA
PLL CLK
PLL CE
COUNT
R-CH
MUTE
T2
FM IFT
T2
FM IF
L3
AM FERRITE-ROD
ANTENNA
VT B+
PLL DATA, PLL CLK,
PLL CE, COUNT, MUTE