ICF-C490
10
10
E C B
Q101
R123
R130
R118
R101
R107
R116
R106
R136
C121
E C B
Q102
R117
R128
C108
C110
C109
C112
C113
R121
C119
C107
R127
C106
R115
C105
R114
R120
JC101
C116
R104
C117
R5
R4
R11
JC102
R109
R111
R119
C104
R112
C103
Q103
B C E
R125
R139
−
2
−
1
R113
C115
R126
R129
R110
R14
C120
R124
E C B
Q1
C118
R122
R132
R131
JC4
JC1
R7
16
15
1
30
R6
C10
R8
C5
R15
C8
C13
C17
C14
C18
C6
R3
R2
JC2
JC5
C2
R1
C1
C21
C3
R108
R135
R138
S105
JW111
JW108
JW130
JW107
JW106
JW105
JW104
D107
D106
JW102
JW103
JW101
D105
C111
+
1
7
JW113
IC101
1
14
15
28
1
16
C114
+
S103
JW109
D101
JW116
JW114
JW117
JW129
D104
JW118
S104
JW124
D108
JW120
JW122
S108
JW119
JW115
JW110
JW121
S109
D103
D102
JW123
JW125
S106
L2
S107
JW127
JW3
C7
+
JW6
C20
+
1
4
JW1
CF3
C11
+
C12
+
C19
+
JW2
JW4
+
C16
+
C15
Q2
C9
+
CF1
CF2
IC1
CV1
T1
L4
L3
S1
RV1
(11)
11
1-684-733-
MAIN BOARD
BAND
S1
FM
AM
TP
(SP
−
)
TP(SP+)
VOL
RV1
SP1
CV1-4
CT1-4
CT1-1
CV1-1
CV1-3
CT1-3
CT1-2
CV1-2
TUNING
L1
AM FERRITE-ROD
ANTENNA
ALARM RESET
RADIO ON
ALARM RESET
RADIO OFF
TP
(FM ANT
)
W7
FM LEAD ANTENNA
SLEEP
SNOOZE
LED101
(LED DISPLAY)
TIME SET
FAST +
S101
ALARM MODE
S103
TIME SET +
RADIO+BUZZER
BUZZER
RADIO
S111
BUZZER VOLUME
QUIET
NORMAL
LOUD
CLOCK
BUZZER
RADIO
HOLD
OFF
−
1
−
2
TIME SET
FAST
−
ALARM TIME/
CLOCK SET
S102
(SINGAPORE)
W5
S110
BRIGHTNESS
LOW
HIGH
1
4
D202
D201
LED BOARD
(11)
11
1-684-735-
ALARM
BUZZER
ALARM
RADIO
R301
C304
C303
EC
B
Q301
T301
POWER
TRANSFORMER
(AC IN)
PC1
C302
+
C301
+
PS301
D303
D302
R304
R305
D305
POWER BOARD
(11)
11
1-684-734-
1
7
DRY BATTERY
6F22
(IEC DESIGNATION 6F22)
1PC. 9V
RED
BLK
POWER BACK UP
FOR CLOCK
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
4-3.
PRINTED WIRING BOARDS
D101
C-8
D102
B-6
D103
B-6
D104
B-7
D105
E-9
D106
D-10
D107
D-10
D108
C-7
D201
G-5
D202
G-4
D302
H-8
D303
H-8
D305
G-6
IC1
D-3
IC101
D-8
LED101
F-7
Q1
E-5
Q2
E-3
Q101
C-9
Q102
C-9
Q103
C-6
Q301
G-7
• Semiconductor
Location
Ref. No.
Location
