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