Read Sony ICF-J40 (serv.man2) Service Manual online
3
3
ICF-J40
ICF-J40
2-1. PRINTED WIRING BOARDS
: Uses unleaded solder.
C1
C12
C7
C30
C2
JC1
C53
C33
C38
C37
C24
C20
C21
C21
C22
C16
C8
C17
C18
C18
C48
C51
C43
C40
C26
C54
C13
C9
C10
C58
C11
C6
C5
R1
R15
R3
R5
R4
R6
R13
R8
R9
R7
R2
C52
C52
C3
C29
EC
B
Q2
E
C
B
Q1
C39
C23
C19
C27
C14
R12
D1
A K
JW8
JW10
JW2
JW1
JW3
JW7
JW4
JW6
JW5
JW12
S1
JW9
IC1
1
15
30
16
JW15
JW16
JW17
JW14
JW13
C47
+
C45
+
C25
+
C34
+
C35
+
C50
+
C46
+
CT7
CT6
SW1 OSC
SW2 OSC
L10
L11
L9
RV2
1
2
RV1
EPJ1
SW2 ANT
L4
L7
L8
L2
L1
L5
CT5
CF2
CF1
T1
L6
CF3
RADIO BOARD
1-689-039-
(12)
12
D2
1
2
LED BOARD
1-689-040-
(12)
12
L3
FINE TUNE
TONE
CV1-3
CT3
CT4
CT2
CT1
CV1-2
CV1-1
CV1-4
DRY BATTERY
SIZE “C”
(IEC DESIGNATION R14)
2PCS. 3V
TUNING
FM t MW t SW1 t SW2
-6
-5
-4
-1
-2
-3
-1
L3
-2
-3
MW FERRITE
ROD ANTENNA
RM OSC
RF
FM
ANT1
FM/SW
TELESCOPIC
ANTENNA
BAND
SP1
MW OSC
v
VOL
RV3
RED
RED
WHT
RED
GR
Y
RED
GRY
-6
-5
S1
-4
-1
-2
-3
A
B
C
D
E
F
1
2
3
4
5
•
IC Block Diagram
– RADIO Board –
IC1 CXA1019S
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINATOR
AF POWER AMP
AM FE
FM IF
TUNING
METER
AM IF DET AGC
FM FE
23
22
21
20
24
25
19
18 17 16
29 28 27 26
30
GND
GND
AF OU
T
VCC
RIPPLE
FI
LTER
AF IN
DE
T
OU
T
AFC
AGC
AFC
AGC
IF GND
METER
N.C
FM IF IN
AM IF IN
FM/AM BAND
SELEC
T
FM/AM
IF OU
T
N.C
FE GND
AM RF IN
FM RF
REG OU
T
FM OSC
FM RF IN
AFC
AM OSC
VO
L
NF
FM DISCRI
GND
GND
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