ICF-C253
— 7 —
— 8 —
SECTION 4
DIAGRAMS
4-1.
PRINTED WIRING BOARDS
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
KEY BOARD
POWER BOARD
LED BOARD
MAIN BOARD
1-676
-852-
1-676-851-
11
(11)
11
(11)
1-676-850-
11
(11)
1-676-849-
11
(11)
A
A
C30
C9
C19
C24
C10
C25
C108
C156
C157
C158
E
CF1
CF2
CF3
X100
15
28
1
14
1
1
1
5
4
1
8
3
2
FM
ANTENNA
BPF1
VR1
VOL
CT1
CT3
C8
T1
L3
L1
L4
AM FERRITE-ROD
ANTENNA
K
K
E
D5
D100
D155
D154
D152
D153
D101
D151
D6
D7
D8
D9
D10
Q151
W200
W151
E
E
E
E
1
14
15
28
29
42
43
56
LCD100 (LIQUID CRYSTAL DISPLAY)
E
CN150
1
3
CN2
1
3
W2
1
4
W150
CN201
E
E
HI
LOW
S1 BRIGHTNESS
H
L
1
8
CN200
B
A
ALARM
MODE
T150
POWER
TRANSFORMER
P150
AC IN
S213
CLOCK
S210
DST
S209
M5
S208
M4
S204
ON
S202
OFF
S207
M3
S206
M2
S205
M1
S200
S201
S203
BAND
S211
SNOOZE
S212
A-RESET
S214
S215
SP1
(SPEAKER)
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
10
TO
ALARM
DIAL
16
TIME
TIME
TUNING
D5-D8
BACK LIGHT
Ref. No.
Location
D5
E-8
D6
E-7
D7
E-6
D8
E-5
D9
E-3
D10
E-3
D100
D-5
D101
D-5
D151
D-4
D152
D-4
D153
D-4
D154
C-4
D155
C-4
D156
IC1
C-8
IC100
E-6
Q2
C-7
Q3
B-8
Q6
E-9
Q7
D-6
Q8
D-6
Q9
E-4
Q10
E-4
Q100
E-5
Q101
E-5
Q151
C-6
• Semiconductor
Location
