Read Sony ICF-C115 Service Manual online
ICF-C115
11
11
5-1. BLOCK DIAGRAM
28
16
9
1
|
13
22
23
27
AF POWER
AMP
FM IF
AM IF
FM
DISCRIMINATOR
5
17
18
RIPPLE
FILTER
INPUT
CONTROL
SLEEP
CONTROL
SNOOZE
CONTROL
OUTPUT
CONTROL
RADIO
OUTPUT
DISPLAY
CONTROL
LED101
LED DISPLAY
(24H)
DISPLAY
DECODER/
DRIVER
OSC
1/25 or 1/30
Q302
+B
24
21
TIME SET INPUT
ALM DISP
SELECT
RT-TIME SET/ DIMMER
SLEEP/SNOOZE
ON/OFF INPUT
ALM-2 OUTPUT
ALM-1 OUTPUT
S101-1
S105
FAST -
S104
CLOCK
S107
FAST +
S106
TIME SET
+
S111
SNOOZE
S108
SLEEP
S110
RADIO
ON
S109
ALARM
RESET•
RESET•
OFF
D304
DRY BATTERY
"006P" 9V
(IEC DESIGNATION 6F22)
T301
POWER
TRANSFORMER
L1
CV1-2
CT5
CV1-3 CT6
CV1-1 CT3
CV1-4 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
IF IN
AF IN
AF OUT
NF
+B
+B
DET OUT
AM
IF IN
IF IN
DISCRI
VOL
CF3
FM DISCRI
VREG
Q1
Q101
D105
D106
Q105
RV1
w
VOLUME
IC101
ALARM CLOCK
S1
BAND
AM
FM
BAND SW
SP1
(SPEAKER)
KEEP THE CORRECT
TIME DURING POWER
STOPPAGE
< BACK UP >
REG
FM
LEAD WIRE
ANTENNA
SPEED/
POWER
DOWN
Q102
VDD
+VDD
3
• Signal path
: FM
: AM
4
24
25
ALARM
TIME•
BUZZER
S101
S102
S101-2
D103
D104
ALARM
TIME•
RADIO
S103
ALARM MODE
RADIO + BUZZER
RADIO
BUZZER
OFF
S101
ALARM MODE
RADIO + BUZZER
RADIO
BUZZER
OFF
D301
+B
D302
PS301
D111
D107
D112
D109
D108
27
~
AC IN
17
18
15
BATTERY
SWITCH
Q301
20 19
1-13
+VDD
+VDD
S105
S104
S102
S103
S107
S106
S111
S108
S110
S109
14
18
17
15,16
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