Sony CFD-E75 - Block Diagram - TUNER Section

CFD-E75
2020
6-2. BLOCK DIAGRAM – TUNER Section –
2
24
4 7
20 21
FM
RF AMP
FM
MIX
FM
OSC
FM IF
AMP
IF
BUFFER
AF
BUFFER
AF
AMP
MPX
MUTE
STEREO/
MONO,
FM/AM
AM IF
AMP
FM
DET
AM
DET
6
FM RF
IN
22
AM
RF AMP
AM
MIX
AM RF
IN
FM/AM
MIX OUT
OSC
OUT
CF2
10.7MHz
FM/AM PLL
IC2
CF4
450kHz
FM
RF OUT
10
QUAD
FM
IF IN
12
15
11
LOUT
MPX
IN
ROUT
13
AM
IF IN
LPF1/BAND
AM OSC FM OSC
FM/AM RF AMP, MIX, OSC,
FM/AM IF AMP, DET, MPX
IC1
L2
FM VCO VOLTAGE
L4
AM VCO VOLTAGE
CT1, L1
FM TRACKING
T1
AM IFT
CT3, L3
AM TRACKING
LOW-PASS
FILTER
: FM
: AM
X1
75kHz
CT3
L3
AM FERRITE-ROD
ANTENNA
L1
FM RF
XOUT
XIN
AM IN
IF IN
ST-IND
LP-OUT
LP-IN
FM IN
20
19
111218
CT1
D1
L4
AM OSC
L2
FM OSC
LEVEL
DET
ST
IND
14
LPF2/MO-ST
AM
OSC
BUFFER
BUFFER
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
DI
CL
CE
DO
R-DATA
R-CLOCK
R-CE
R-COUNT
R-CH
CNP1
DET
OUT
ANT1
FM TELESCOPIC
ANTENNA
PD
IF OUT ST IND
2
3
1
4
10
BAND
7
MO/ST
13817 16
17 18
16
19
D2
D3
(1/2)
D3
(2/2)
8
9
7
10
TUNER BOARD
T1
AM IF
FROM MAIN
SECTION
(Page 21)
C
D11D10
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
LOW-PASS
FILTER
11
2
R-MUTE
VT
6
L-CH
MAIN BOARD
(2/4)
6 1
TO MAIN
SECTION
(Page 21)
B
12 BIT
PROGRAMMABLE
DIVIDER
L-CH
CNP322
(2/4)
CN321
(1/2)
T2
FM IFT
T2
FM IF