CFD-E75
2727
6-8. SCHEMATIC DIAGRAM – TUNER Section –• See page 23 for Waveform. • See page 36 for IC Block Diagrams.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
C51 C52
R52 R65
C54
R54
C95
C53 C65
R63
R91 C56
C55
IC2
R60R61 R59 R58
JC4
R13
L21
R56
R4
JC5
C60
C68
C66R92
C27 C26
JC33
C18
C15
CF2
JC6
R1
CF4
JC13
C12
C9
C10
C8C4
R2
R3
R11
C23
C24
C34
D1
CT1 C35 C33
D2
C31
R31
C30
R41 C49CT3
JC11JC12
C47R40
C43
C42
C41
C39
R30R32 C80
C37
R50
C21
C22
JC3
R24 C20
C11
C1
C32
D11D10
CNP1
R94
C57R53
C59
R51
C63
C62
C61
TP
X1
L4
JC34
JC1R10JC2
C29
C77 C78
C14
T2
T1
L2
L1
IC1
L3
D3
JC24
L11 1
µH
ANT1
TP
C7
22p 10p
0 10k
220
10V
470
1000p
0.22 4.7 50V
10k
1k 1000p
100p
LC7213M-TLM
2.2k2.2k 2.2k 2.2k
2.2k
330
10k
1000p
100p
100p1k
100p 100p
220
10V
330
4.7
50V
10p
1
50V
1000p1000p
470
10k
3.3k
1
50V
220p
0.01
KV1471E
10p 0.01 0.01
KV1471E
22p
3.3k
0.01
10k 0.0120p 10p220k
22p
100p
220p
0.1
15k100k 0.01
0.01
1k
1
50V
0.1
220 0.1
0.1
47p
1000p
1SS3551SS355
11P
1k
1000p15k
100p
10k
100p
100p
100p
(VT)
75 kHz
47
100
10V
4700p 4700p
TA2149N
KV1520NT
(ANT)
5p
**
*
RADIO 6V
VT
XOUT
XIN
LP-OUT
LP-IN
PD
VSS
VDD
MO/ST
FM IN
AM IN
CE
DI
CL
DO
BAND
ST-IND
IF IN
MUTE
AM OSC
FM OSC
VCC1
OSC-OUT
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
AM
LOW CUT
OUT
MIX-
FM/AM
BAND
FM/AM PLL
AM OSC
R-MUTE
R-COUNT
R-CLOCK
R-DATA
R-CE
L-OUT
R-OUT
A-GND
S-GND
(SP,TW,KR,AR)
FM IFT
*
C14,15
0.022
0.01
(US,CND,E92,MX)
(SP,TW,KR,AR)
AM IFT
FM OSC
FM
RF
FM/AM RF AMP,
MIX,OSC,FM/AM IF AMP,
DET,MPX
ANTENNA
AM FERRITE-ROD
(US,CND,E92,MX)
(SP,TW,KR ,AR)
ANTENNA
FM TELESCOPIC
10µH
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
f : AM
• Abbreviation
AR : Argentina model
CND : Canadian model
E92 : Central and South America model
KR : Korean model
MX : Mexican model
SP : Singapore model
TW : Taiwan model
Ver 1.1
(Page 30)
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