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4-3. SCHEMATIC
DIAGRAMS
D3
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1IS2835
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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
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®
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FM
OSC
MUTE
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IC101
Q101
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BUFFER AMP
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-
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
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SWITCH
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Q106
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SLH-34MC3
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|
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
Voltage
variations
may
be noted
due to normal
produc-
tion tolerances.
®
Signal path.
cS
:FM
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