Sony ICF-C115 Service Manual ▷ View online
9
ICF-C115
Adjustment Location:
RV1
CV1
TUNING
L4
L1
L2
L3
CT6
CT4
CT5
CT3
T1
SP1
(SPEAKER)
SP1
+
+
FM
LEAD WIRE
ANTENNA
T1
AM IF
ADJ
L4, CT3
AM
TRACKING
ADJ
L1, CT5
FM
TRACKING
ADJ
L2, CT6
FM FREQUENCY
COVERAGE ADJ
L3, CT4
AM FREQUENCY
COVERAGE ADJ
S1
BAND
FM
AM
10
ICF-C115
SECTION 5
DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
BOARDS AND SCHEMATIC DIAGRAMS.
Common Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Total current is measured with no-signal.
• Power voltage is dc 9V and fed with regulated dc power
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: AM
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Common Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
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
ICF-C115
12
12
5-2. PRINTED WIRING BOARDS • Refer to page 10 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
MAIN BOARD
C105
R117
R100
C100
C104
JC102
JC103
C10
B C E
B C E
B C E
B C E
C102
C106
C111
C107
C112
D113
R301
C303
D302
D301
R302
R135
RV1
JW107
LED101 LED DISPLAY (24H)
1
18
R137
R136
R108
R109
R110
R125
JW112
C101
D107
D106
D112
D111
JW104
D105
JW108
JW110
JW114
C306
Q302
R128
R116
R102
RED
RED
C301
C302
R101
R121
R124
R126
R119
R12
R9
C34
R2
C6
C1
C2
C3
C3
R8
CT3
CT4
CT5
CT6
C16
C24
C23
C21
C22
C25
S101 ALARM MODE
D108
D1
D2
D109
D103
D104
R304
JW16
JW15
C29
R113
R305
JW115
S102
S103
JW109
C115
C304
CN1
PS301
JW301
JW106
S109
S110
RADIO ON
S108
SLEEP
S111
SNOOZE
S104
RED
WHT
RED
WHT
CLOCK
SP1
(SPEAKER)
ALARM RESET•OFF
JW3
FM
AM
S105
FAST+
S1
BAND
RV1
VOLUME
S107
FAST -
S106
TIME SET
+
ALARM TIME •
BUZZER
ALARM TIME •
RADIO
JW111
JW102
JW113
R15
T1
CF1
CF2
IC1
C15
BPF1
CF3
C18
R103
R104
R14
JW14
C14
R3
C35
B C E
JW4
D304
C27
C28
C26
C17
JW1
C5
CV1-1
CV1-2
CV1-3
CV1-4
C4
R118 C114
C11
L2
FM OSC
L4
AM
FERRITE-ROD
ANTENNA
L1
FM RF
CV1 TUNING
L3
AM OSC
T301
POWER TRANSFORMER
R127
R107
C103
IC101
R5
R4
R105
R106
R112
R112
C118
C119
C9
R10
Q105
Q301
BATTERY
SNAP
FM
LEAD WIRE
ANTENNA
BLK
GRY
GRY
RED
Q101
Q102
Q1
R134
R132
R114
R133
C117
R129
C113
R115
C116
R131
R122
C108
R123
C109
TRANSFORMER BOARD
28
15
1
14
15
16
1
30
RADIO+BUZZER BUZZER RADIO OFF
-2
-1
BC
E
DRY BATTERY
" 006P " 9V
(IEC DESIGNATION 6F22)
KEEP THE CORRECT
TIME DURING POWER
STOPPAGE
<BACK UP>
S1
~ AC IN
1-686-759-
(11)
11
(11)
11
1-686-760-
4
1
1
4
D1
B-8
D2
B-8
D103
C-7
D104
C-7
D105
H-4
D106
H-3
D107
H-3
D108
D-8
D109
D-8
D111
I-3
D112
I-3
D113
H-7
D301
H-9
D302
I-8
D304
D-9
IC1
D-5
IC101
H-5
LED101
I-5
Q1
H-2
Q101
H-3
Q102
H-3
Q105
G-4
Q301
D-8
Q302
E-8
• Semiconductor
Location
Ref. No.
Location
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