Schematic Diagram - Tuner Section - Sony CFD-E75 Service Manual

6-8. SCHEMATIC DIAGRAM – TUNER Section – •
L3
AM FERRITE-ROD
ANTENNA
JC12
ANT1
FM TELESCOPIC
ANTENNA
C32
1000p
D10 D11
1SS355 1SS355
•
See page 23 for Waveform. See page 36 for IC Block Diagrams.
C41
220p
C42
D3
100p
KV1520NT
C43
22p
CT3 R41 C49 R40 C47
JC11
20p 10k 0.01 220k 10p
R32 R30 C80
100k 15k 0.01
CT1 C35 C33 C31
10p 0.01 0.01 22p
L2
FM OSC
L1
FM
C34
C30
0.01 RF
0.01
JC3
R31
3.3k
C23
R24
1
220
50V
C12
4.7
JC13 C9
50V
10p
C11
0.1
T1
AM IFT
TP
C1
(ANT)
47p
CF4
R2
470 JC6
R3 R1
10k 330
CF2
C18
C10
C4 C8 220
1
1000p 1000p 10V
50V
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
specified.
•
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
L4
AM OSC
C39
0.1
C37
0.01
R11
3.3k
C21
C24 C22
1
220p 0.1
50V
C20
0.1
FM/AM PLL
IC2
LC7213M-TLM
FM/AM RF AMP,
C61
MIX,OSC,FM/AM IF AMP, 100p
DET,MPX
C62
100p
IC1
TA2149N
C63
100p
C7
5p
JC4
T2 * C14,15
FM IFT 0.022 (US,CND,E92,MX)
0.01 (SP,TW,KR,AR)
JC33
JC2 R10 47
JC34
C29
C77 C78
C14 C15 100
4700p 4700p
10V
* *
(SP,TW,KR,AR)
• Voltages and waveforms are dc with respect to ground
1 / W or less unless otherwise
4
• Voltages are taken with a VOM (Input impedance 10 MΩ).
: internal component.
f
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
27 27
R50 R52 R65 R63
1k 0 10k 10k
R91 C53 C65 C56
1k 0.22 4.7 50V 1000p
C54
R51 220
10k 10V
C51 C52 C59
R54
22p 10p 100p
470
C95
1000p
X1
75 kHz
R53 C55 C57
15k 100p 1000p
C60
1000p
R94
1k
C68
R92 C66
100p
1k 100p
R13
2.2k
R61 R60 R59 R58
2.2k 2.2k 2.2k 2.2k
JC1
C27 C26
100p 100p
under no-signal (detuned) conditions.
no mark : FM
( ) : AM
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
CFD-E75
Ver 1.1
TP
(VT)
R4
10k JC5
R56
330
L21
10µH
CNP1
11P
R-MUTE
R-COUNT
R-CLOCK
R-DATA
R-CE
L-OUT
RADIO 6V
R-OUT
A-GND
(Page 30)
VT
S-GND
• 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