Sony ICF-990L - Section 4 Diagrams; Printed Wiring Boards; Schematic Diagram

SECTION 4
DIAGRAMS
® Semiconductor Locations 4-1. Printed Wiring Boards
ae |
Ref. No. Location | Ref, No Location
L +— i 4 5 6 t | 8 | 9 10
D1 D-9 Q1 E-4
D2 D-4 Q2 D-5
D
3
D-3
Q
3
Boa
(VOL
D5
D-5
Q4
G-2
ag
D6 E-6 Q5 E-6§
D7
E-6§
Q6
F-6
,
D 8 D-8 Q7 F-4
0 9 E-8 Q 8 E-6
D10 E-8 QQ E-6
D1 3 G-8 Q10 D-8
D14 G-8 Q11 E-8
D15 D-6 Q12 E-8 zi
D101] A-5 Q13 E-8
D102] A-4 Q15 F-6
Bet0-o ASS Qio0t] B-4
D104!
B-4
a
02
Bs
sa
D105
B-4
103
~3
L4
speci
TELESCOPIC
ANTENNA
D106] B-3 Qi04]| B-3 [MAIN BOARD] Pee eee oi
D107]
A-38
Q201
B-10
cone
/
Q?027) B=1-0
IC 1 D-4 Q203] B-10
IC 2 E-4
IC3 E-7
IC
4
E-7
J2
IC5
E-6
et
—
I
©)
IC2
0
1
B-9
EARPHONE
sl ing ae Nin Se Gate toon er
SPI
SPEAKER aie
18 DRY ee.
Rice DESGNATION )
SIZE "AA" R6
4Pcs 6V
Note:
* O—— :parts extracted from the component side.
—jJ= — 3—
4-2. Schematic Diagram
1C201
Fit, 2, 350
(C204 (2/5)
oPD406686
wi | [MAIN BOARD]
TELESCOPIC
ANTENNA
O—-7
o
j
>
1
iz
pte
3
in
:
]
op
5.9
.
=
J
ici
;
ih
ans
(©
s1-5
w
{gs
1C20%
(3/5)
$1-3
cl
>
u
=
360>
$1-6
Cage],
:
Pac
wl
et
oi
2a
Pat
:
en ee
lex (4/5) i
sPD40668G
G) ro (4)
16201 (1/5)
aPpsoccag
Vss
esas eae
6) |
|
Ll
(C204 (8/5) Ot
0P0 406680 18S226
FREQUENCY
COVERGE
AY204
106
[KEY BOARD}
A121.2.24 |
ut :
|
|
1
(rune) S, sities
AM OFM OREGSFM AFC) OAMSsCVOL)sNF”sODESCRE EARTH EARTH
AF osc osc
FM/AM
ne frau Der
AMP, ’
1c2 CKATON9S TF AMP. DET
IF AFCIW) AFC(J) DET AF ORIPPLE Ar
LED EARTH AGC) AGC) «OOUT)« IN FILTER «48 QUT. EARTH EARTH
d a:
rj
a Le
2.1(0.8)
c0>[0)
5
orch sate
SWETCHING
ee See Ree
e «2 6
Toh) 13 C76 9.01
of To aia if
ot. IN40O2AT
le
vaio?
SWITCHING
O
O
-—
b14
i.
ot
I!
1N4002AT
lot to : 1¢4 (S75) reer
sai lot _tol :
ot Lo he Z
ol Lod Vo Be
ofl, 5
iL Gd
t- a
ya}
(ec DESLONAT ION)
4pcs.6¥
Note: ;
-
All
capacitors
are
in
wF
unless
otherwise
noted,
pF:
u
uF
*
Voltage
is
de
with
respect
to
ground
under
no-signal
(detuned)
50WV or less are not indicated except for electrolytics conditions.
and tantalums. no mark: FM
- All resistors are in Q and % Wor tess unless otherwise ( ) MW
speci fied, < > LW
. A :internal component. C ] :SW
- Voltages are taken with a VOMCinput impedance 10MQ).
Voltage variations may be noted due to normal production
Note: The components identified by mark A or dotted
line with mark A are cirtical for safety. ees
Replace only with part number speci fied. " otgnal patn.
ef => :FM
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15