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Sony ICF-7800 - SECTION 4 DIAGRAMS - SCHEMATIC; Schematic Diagram Overview

Sony ICF-7800
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4-2.
SCHEMATIC
DIAGRAM
-ICF-7800
_ICF-7800
MAIN
BOARD
_
7
_
_
7
_
-
Ql
2SK42
ICI
CxXI60
1C2
CXI6I
1C3
CXI6|
02,3
182076
C4
CxI62
D5
IT26
06
FM
RF
AMP
FM
CONV
R67
LS
47H
FM
IF
AMP
(a2
FM
IF
AMP
FM
IF
RECT
FM/AM
IF
AMP
TEL
ANT
Pe
me
:
ao
:
eae
a
nn
ee
eS
Sterna
aaa
MOC
E
=
ANTI
ANT2
1
ME
20
0.01
FM
FM/SW
"
i
100
150
c92
opt
(ew)
a
pee
c90
10/3.15V
0.01
ro
WAVE.
FORMS
OF
Gy
IC5
CXI63
Hifi!
f
No-p
C7
CXl64
C28
POWER
AMP
AM
CONV
Cog
a
\20
C57
PREAMP,
TONE
CONTROL
AMP
(I/16W)
100
C26
em
ov
RSI
360
la
RIS
00
R20
(I7i6w)
C30
ia
22k
Lu
MW
O
is
R64
47011
is
A70U
is
(5.2)
1
<5.5V>
y
Re
2
cs8
[is
IC6
CX165
;
(
<O01Vp-p>
-
C65
cer
say
|
SP
&3V
S
fos
auhs
R41
39
330p
ge
220/6.3V
35V
=
Q2
2SK42
CFT
1.8k
V35V
e
1O-—(9)
(3
S
AM
RF
AMP
a64.aVv>
Pee
eae
Gre
ye
=
;
J2-2
:
4
o.ays
sv
pe
Pee
|
Con
nee
=e
MP
]
|
Preamp
a
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|
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a
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kan
ou
:
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——
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C64
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®
22k
28
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ase
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oe
a
4.
318
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OP
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5
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a4,
7A)
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22k
ae
SY
96s
:
ae
;
ws
G7
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ms)
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(view)
C102
|
|
63v
$38
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+
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C49
109
CsI
315
3.15V
0.01
1
|
R38
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Bi
0.04
»,0.05Vp-p>
-
R49
5.k
[FREBLE]
VR2
5OKIA)
330
ore
a
eae
PT
Tool
P
i
100k
;
(view)
MAIN
BOARD
(ew)
fe
se
=
~
SN
TIMER
BOARD
BV
ON
sev
SWITCH
BOARD
Jl-2
LS
-_
(Rr
YS
|
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Rar
arent
me
ae
AR
RY
a.
I
=
a
n
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Ms
ee
i
sa
naiea
een
men
Saree
Bec
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bec)
A
Mee
8m
|
WHEN
MEASURING
Y
THE
VOLTAGE,
AAA
Penh
oc
TIMER
SELECT
ACRO
=
04
OFF:5.5V
a
oMINUTE
@ano@)
;
R55ON:
¢
ae
I
lok
|
SWITCH
i
BOARD
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6v!
th.
|
A)
04
ON:O,IV
6V
mee
[bus
[93
ee
cee
t
RIPPLE
FILTER
85
TiueR
SEX
cg7
OL
MINUTES
|
100k
4PCS
-
CONTROL
1/35V
1C8
CX077
_IMER
a
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—-
19
20
:
:
!
:
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Se
aE
PSR
I
Le

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