Sony ICF-C733 - Page 10

4-3.
SCHEMATIC
DIAGRAM
ICF-C733/C733L
«
See
page
14
for
IC
Pin
Functions.
(IC2)
1
{MAIN BOARD]
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
* IC Block Diagram IC1 CXA1019S
te
FE
FM
AM
FM
FM
AM
FM
OUT
GNO
RFIN
NC
RFIN
RF
REG
OSC
AFC
OSC
VOL
NF
O!SC
GNO
GND
D5—D8
SLZ-235C-15
BACK LIGHT
AM TRACKING
f ADJUSTMENT DI
KVI560 C733 MODEL.
LCDI LIQUED CRYSTAL DISPLAY PANEL
AF POWER AMP
KVIS63 C733L MODEL
lp
SEYS
lo-oo
¢-
C733L
LW/MW
®
©
@&
@&
AM
i
|
MODELL
4
-
2
CIS
C733L
MODEL
uf
ol
n|
[
|
;
‘
[
|
MHz
“T
FERRITE
-ROD
430p
C733
MODEL
a/alals
PM
‘
kHe
ane
0p
ees,
woe
\[
oa
a
So
ee
cecia
sand
AM
FM
NC
METER
IF
AGC
AGC
DET
AFIN
VCC
AF
GNO
GND
L1-3
AW
IFIN
TEIN
GNO
OUT
RIPPLE
OUT
L1-4
ADJUSTMENT}
=
R11
10k
MUTE
SW
(ae
Le
LCD
-DRIVE
Note:
Poe
ee
¢
All
capacitors
are
in
uF unless
otherwise noted.
pF:uuF
50WV or less are not indicated except for electrolytics and
LEAD WIRE
ANTENNA tantalums.
barr 7 * All resistors are in Q and 1/4W or less unless otherwise
'!300p IM specified.
=
.
A
_
:
internal
component.
C3 JRE JR?
0 68p * [—__]: panel designation.
Note: The components identified by mark A or dotted
line with mark A\ are critical for safety.
Replace only with part number specified.
MetW: B+ Line
[.__]: adjustment for repair.
* Voltage and waveforms are dc with respect to ground
under no-signal (deturned) conditions.
no mark : FM
( ) : AM
* 1 can not be measured.
* Voltages are taken with a VOM (Input impedance 10MQ).
Voltage variations may be noted due to normal production
tolerances.
* Signal path.
m= : FM
*1 : Printed pattern functions as a kind of coil.
REG FM AFC AM
0 Osc
SC 8
IC | CXA1019S
IF = AFC (W) AFC(J} = DET R
EARTH AGC = AGC OUT of LED
FM/AM FRONT END
IF DET. AGC
POWER AMP
SPEAKER
C25 4.7 50V
|} 'ai3_ 2$C1623TI
R29 8.2k
Cod
CFI
;
¢«
Abbreviation
0.01
BAND
SW
=e
eae
a
IT
—:
Italian
model.
Qs
C32
C60
_100p
Lwsw
470
lov
Y=”
POWER
SUPPLY
LINE
STATUS DETECT e
0
Pa gosto
RIO3
REG Ik IN 4002AT-93
Sai $2 $3 $4
$5
RADIO RADIO TIMESET/ TIMESET/
OFF ON TUNE TUNE
[E]
RESET
C733L MODEL
|
I
|
C733L MODEL
I
'
!
$6 $7 $8 $9
[1]
ENTER
TI
|B
BUZZER]
[A
RADIO]
RVIOI POWER
| DTZ5-1A-TTH TRANSFORMER $10 SII $2 $13
=
LLL
A
I
-
nd
aio;
aos
t
&
SNOOZE/]
[BAND
6.8k 2 NOT REPLACEABLE SLEEP OFF
BUILT IN TRANSFORMER [5|
[POWER BOARD]
a)
ke,
ett
boars
ae
a