Sony ICF-C103L - Page 9

4-3. SCHEMATIC DIAGRAMS
1
2
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6
7
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1IS2835
[KEY
BOARD ) _ LCD101
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LIQUID
CRYSTAL
DISPLAY
PANEL
QI
A est SWITCH D2
A aes KVI560-TROO i [A]RADIO|[B]BUZZER| BATT TIMER
ANT
ees Q3 0 FM <= <==
MW 2SC1623-TIL6 LW/MW | | | | ‘ | | | |
LW SWITCH | /\ AM
| RS4 10k Ql PM i e MHz tot
(0) 0 WY
2SC2223-TIF13 {(O> 2SA8I2-TIMS —-, emma oR ® cme Zz
FM OSC MUTE
EXE)
KK MIMOIOLGE®)
IC101
Q101 BeoI724 89-187
2SC2223-TIFI3
VCO BUFFER AMP Cope ee
|
D101 F
ef ISS133
0416, 2 (1, cDIt
5
1.2.(1.4)
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—
LCD13 Dyer,
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ee
LCD14
(63)
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LCDIS
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MW/ LW
C FERRITE
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ANTENNA
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LW
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2SC1623-TIL6 (13)
MW/LW SWITCH _
- C30 220p
R28 2.2K
SP!
SPEAKER
Q104, Q105
2SCI623-TIL6
LOWPASS FILTER
Q102
2SA8I12-TIMS
VOLTAGE DETECTOR
[ R113
Q103 12k
2SC1625-TILS
VOLTAGE DETECTOR
RiI2z6 =©D103
Ik 1S2835-T!
fF
=
an
2SC1623-TIL6
AM/FM SWITCH a
res
Ql2
2SC1623-TILE
LW SWITCH
D105, D106 RN2 47k Q106 Di02
SLH-34MC3 2SC2001TP-K2 ro Pi Goa |
RIPPLE FILTER
Sidi :
$102 :
$103
$104
* | REPEAT ALARM/SLEEP OFF
S105 :
$106
$107
$108 :
$109
$110
$111
.
+
S¥12 :
Sie:
NO
ALARM RESET
RADIO OFF
t
SLEEP
RADIO ON
ALARM 8: BUZZER
BAND
TIME SET TUNE -
ALARM A: RADIO
1 WAKE UP STATION
ALARM MODE
TIME SET TUNE +
ENTER / CLOCK
TIMER
Sil
1
$106 S109 Sii2
a
DIIO-Dil2
1S2837-Tl
Sil3
ICF-C103L
e IC Block Diagram
IC1 CXA1019S
FM/AM
ippteAF OET AFC AFC IF FM AM BANO
I\LTERIN OUT AGC AGC GNO METER N.C IF INIF IN SELECT
s=
Tun inc METER ING METE ||
AF R
F
GNO GNO FM NF VOL AM AFC FM REQ FM AM N.C FM~ FE FM/AM
OISCRI osc OSC OUT RF RF IN RF EN GND IF OUT
Note:
e All capacitors are in wF unless otherwise noted. pF: uwuF
SOWV or less are not indicated except for electrolytics
and tantalums.
@ All resistors are in 2 and '/,W or less unless otherwise
specified.
e & : internal component.
Note:
The components identi-
fied by mark
or dot-
ted line with mark
are critical for safety.
Replace only with part
number specified.
e Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark: FM
( ): MW
< = OL VV
_@
Voltages
are
taken
with
a
VOM
(Input
Impedance
10M
2).
Voltage variations may be noted due to normal produc-
tion tolerances.
® Signal path.
cS :FM