Sony ICF-9740W - Schematic Diagrams

ICF-9740W _ICF-9740W
(MAIN BOARD] Q2 C1 Di 02 03
QI 2SCI675K UPCIOI8C IT261 IT261 IT23A
2SCI674K
FM
MIX
|
AM
MIX,
FM/AM
IF
AMP
FM
DET
AM
DET
FM RF AMP
<3.1V> <4\> <ay>
A ae LL! Se ee eS eR eT ORT EENEESL, .LEe See E ee eee eerie ee ee eee eee
IFT2 IFT3 Sy
Bee ari ara BAND SELECT)
<3,3V> | RIG Ik _RI8_ 10k FMAM | l
© (ov)
Si-l | Si-2
rai 22k SES | B44
(FM
EXT
ANT
LA
pit tet —4 a
dt 2 *
nim
azz
|
PREC
OUT
|
_ |
ry
CANADIAN |
.
[one
~ [VOLUME = BOARD/3)I ‘
as
IC
2
|
licss
VOLUME
]
*
T
2200
|
A420)
z=
|?
A
BOARDII/3)
POWER AMP
Q3
2SCI675K |
i
\
FM OSC | = eee Re
R44 pai R47
Bs : i Be
S2—-2
ea
2
$2-|
[LOUDNESS | F—>ON
LODE
$3
“\, [POWER |
c39 5.3V
047/50V 4
C53 470/10V
CV-4 CT-4
Ie
2 C25
ro 5p
C43
O/16V
C40 c42
0.601 25
nk C6
Note:
|
@
All
capacitors
are.in
uF
unless
otherwise
noted.
pF
:
uwuF
:
SOWV
or
less
are
not
indicated
except
for
electrolytics
and
tantalums.
8
e All resistors are in ohms, %W unless otherwise noted.
kQ : 10002, M2 : 1000 k2
B+ bus. | |
(C7 : panel designation.
® Readings are taken under no-signal (detuned) conditions
with a VOM ee
Ge) PAM ryt tee Eo
“
>:
FM.
3
Pe
ake,
eee
ea
eae
ste
@ Voltage variations rnay be ern due to: normal: produc:
tion tolerances.
Note: The components identified by shading and mark
are critical for safety. Replace only with
part number specified.
Note: Les composants identifiés par une trame et une
marque A sont critiques pour la sécurité. Ne les
remplacer que par une piece portant le numéro
spécifié.