ICF-C112
11
11
5-1. BLOCK DIAGRAM
28
16
9
1
|
13
23
21
22
24
27
AF POWER
AMP
FM IF
AM IF
FM
DISCRIMINATOR
5
17
18
RIPPLE
FILTER
INPUT
CONTROL
ALARM TIME CTR
OUTPUT
CONTROL
DISPLAY
CONTROL
LED101
LED DISPLAY
(12H)
DISPLAY
DECODER/
DRIVER
OSC
1/25 or 1/30
Q302
SWITCH
Q301
16
18
19
S108
SLEEP
S105
TIME SET
M
S106
SLEEP
INPUT
ALARM
DISP
MIN SET
HOUR SET
SNOOZE INPUT
TIME SET
H
S111
SNOOZE/SLEEP OFF
S101
(Function Selector)
BUZZER
ALARM
RADIO
RADIO ON
OFF
S104
CLOCK
S103
ALARM
D304
DRY BATTERY
"006P" 9V
(IEC DESIGNATION 6F22)
~
AC IN
1-13
14
15,16
17
L1
CV1-3 CT5
CV1-4 CT6
CV1-1 CT3
CV1-2 CT4
CT5,L1
FM
TRACKING
L2
L4
L3
CT6,L2
FM
FREQUENCY
COVERAGE
CT4,L3
AM
FREQUENCY
COVERAGE
CT3,L4
AM
TRACKING
AM
FERRITE-ROD
ANTENNA
CV1
TUNING
T1
AM IF
FM FRONT
-END
AM FRONT
-END
IC1
FM/AM
FRONT-END
IF AMP,DET
FM ANT
FM RF
FM OSC
AM ANT
AM OSC
VREG
13
10
15
8
11
6
MIX OUT
CF2
CF1
T1
FM
IF IN
AF IN
AF OUT
NF
+B
+B
+B
DET OUT
AM
IF IN
DISCRI
VOL
CF3
FM DISCRI
VREG
Q1
RV1
w
VOLUME
IC101
ALARM CLOCK
S1
BAND
AM
FM
BAND SW
SP1
(SPEAKER)
KEEP THE CORRECT
TIME DURING POWER
STOPPAGE
REG
FM
LEAD WIRE
ANTENNA
SLEEP OUT
VDD
ALARM
OUT
ALARM OFF
S101-1
S101-2
D302
T301
POWER
TRANSFORMER
D301
D111
D112
3
• Signal path
: FM
: AM
4
24
25
17
15
D114
S100
HIGH
LOW
ALARM
VOL
+B
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