DOWNLOAD Sony ICF-J1 Service Manual ↓ Size: 839.82 KB | Pages: 17 in PDF or view online for FREE

Model
ICF-J1
Pages
17
Size
839.82 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-j1.pdf
Date

Sony ICF-J1 Service Manual ▷ View online

– 10 –
Adjustment Location:
L1     CT1-1
MW Tracking
Adjustment
L3     CT1-2
FM Tracking Adjustment
T1
AM IF Adjustment
SW Tracking
Adjustment
L2     CT5
– MAIN BOARD (Component Side) –
MW Frequency
Coverage
Adjustment
CT1-4     L5
SW Frequency Coverage
Adjustment
CT6     L6
CT1-3     L4
FM Frequency Coverage
Adjustment
– MAIN BOARD (Conductor Side) –
TP1 (ANT IN)
TP2 (GND)
TP9 (SP –)
TP8 (SP +)
ICF-J1
– 11 –
– 12 –
SECTION  5
DIAGRAMS
5-1.
BLOCK  DIAGRAM
13
15
18
24
16
3
BPF
BPF1
L2
SW ANT
CT5
ANT1
FM/SW
TELESCOPIC
ANTENNA
FM
FRONT-END
FM ANT
11
AM
FRONT-END
AM ANT
MIX OUT
+
+
L5
MW OSC
L6
SW OSC
CT1 – 4
CV1 – 1
S1 – 3
S1 – 4
CT1 – 1
10
8
CV1 – 2
CT1 – 3
CT1 – 2
CV1 – 3
FM RF
FM OSC
FM TRACKING
CT1 – 2, L3
CT1 – 3, L4
L3
FM RF
L4
FM OSC
FM FREQUENCY
COVERAGE
CT5, L2
SW
TRACKING
CT1 – 1, L1
MW
TRACKING
L1
MW
FERRITE-ROD
ANTENNA
CV1 – 4
S1 – 5
S1 – 6
CT1 – 4, L5
MW FREQUENCY
COVERAGE
CT6, L6
SW FREQUENCY
COVERAGE
CT6
BAND
FM
MW
SW
S1
6
AM
OSC
FM/AM FRONT-END,
FM/AM IF AMP, DET, AGC
IC1
T1
AM IF
CF3
CF2
17
FM
DISCRIMINATOR
FM IF
AMP
AM IF,
DET, AGC
FM
IFIN
AM
IFIN
TUNING METER
DISCRI
CF1
20
LED
TUNE
D2
HIGH CUT
SWITCH
Q1
DET
OUT
BAND
SW
VOLUME
RV1
S1 – 2
13
11
POWER
AMP
INVERTER
AMP
POWER
AMP
8
6
3
PWR
OUT1
PWR
OUT2
INV
OUT
IN2
IN1
SP1
(SPEAKER)
15
17
RIPPLE FILTER
Q2
RIPPLE
FILTER
BASE OUT
REF IN
POWER
S2
ON
OFF
BATT B+
DRY BATTERY
SIZE “D”
(IEC DESIGNATION R20)
2PCS. 3V
v
J1
IC2
POWER AMP,
RIPPLE FILTER
05
• SIGNAL PATH
: FM
: MW/SW
S1 – 1
AM IF
 FOR
MW/SW
ICF-J1
– 13 –
– 14 –
5-2.
PRINTED  WIRING  BOARD
Q1
B C E
Q2
IC2
IC1
B C E
L7
JW6
C34
+
C37
+
JW3
C29
+
C23
+
C26
BPF1
+
C25
+
JW7
JW8
JW15
JW9
T1
AM IF
CF3
CF2
C13
C14
C15
+
+
+
C19
+
C9
+
L4
FM OSC
L5
MW OSC
L6
SW OSC
D2
L2
SW ANT
CT5
S2
CF1
RV1
JW13
JW12
JW10
JW11
C38
+
J1
C28
R10
R9
C39
C31
JC6
JC7
R7
C44
C32
C24
C27
C30
R8
C22
C36
C40
C35
C33
R2
C12
R1
C11
C10
C45
R16
C3
R3
JC4
S1
C1
C41
C4
C18
C16
C17
R11
C20
C21
R4
JC8
R6
R5
C5
C6
CT6
JW2
L3
FM RF
MAIN BOARD
05
JC5
C2
1
15
16
30
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
F
G
H
TUNE
JC2
C7
– 6
– 5
– 4
– 3
– 2
– 1
BAND
FM       MW       SW
TP1 (ANT IN)
TP2 (GND)
JW1
ANT1
FM/SW
TELESCOPIC
ANTENNA
L1
MW FERRITE-ROD ANTENNA
BLK
NATURAL
RED
1
3
CT1-1
CT1-4
CV1-1
CV1-4
CT1-2
CT1-3
CV1-2
CV1-3
POWER
VOLUME
OFF
ON
TP8 (SP+)
v
18
10
9
1
JW4
JW5
TP9 (SP – )
SP1
DRY BATTERY
SIZE “D”
(IEC DESIGNATION R20)
2PCS. 3V
RED
WHT
WHT
WHT/RED
1-680-291-
11
(11)
• Semiconductor
Location
Ref. No.
Location
D2
A-3
IC1
F-4
IC2
F-7
Q1
G-4
Q2
E-7
Note on Printed Wiring Board:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
W
: indicates side identified with part number.
f
: internal component.
: Pattern from the side which enables seeing.
ICF-J1
– 15 –
– 16 –
5-3.
SCHEMATIC  DIAGRAM
• IC Block Diagrams
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 OUT
VCC
RIPPLE
FIL
TER
AF IN
DET OUT
AFC AGC
AFC AGC
IF GND
METER
N.C
FM IF IN
AM IF IN
FM/AM BAND
SELECT
FM/AM
IF OUT
FE GND
N.C
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND
GND
IC2
BA6640F-E2
18 17
16
15 14
13
12
11
10
1
2
3
4
5
6
7
8
9
+
+
+
BIAS
RF OUT
RFC
BASE OUT
MUTE OUT1
IN1
NF1
PWR OUT1
VCC
STNBY
PWR MUTE
INVOUT
NFB
MUTE OUT2
IN2
NF2
PWR OUT2
GND
RIPPLE FILTER
MUTE
PWR1
PWR2
INV
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
C
: panel designation.
A
: B+ Line.
U
: B+ Line.
H
: adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
) : MW
〈〈
 
〉〉
: SW
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
f
: MW/SW
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