Sony ICF-C135 Service Manual ▷ View online
SECTION 4
ELECTRICAL ADJUSTMENTS
[FM]
Setting:
BAND switch: FM
BAND switch: FM
[AM]
Setting:
BAND switch: AM
BAND switch: AM
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT4
86.5 MHz
109.5 Hz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
CT3
Frequency max
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
520 kHz
1,750 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
600 kHz
1,400 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
• Adjusting Location: RADIO board (Component Side)
Clock Frequency Check
Confirm that the reading on the frequency counter is 900 Hz.
If frequency is higher, change capacitor value of C101.
If frequency is lower, change resistor value of R101.
If frequency is lower, change resistor value of R101.
+ 200
– 100
– 100
+
–
–
FM RF signal generator
22.5 kHz frequency
deviation by 400 Hz
signal
deviation by 400 Hz
signal
FM lead wire antenna terminal
speaker terminal
0.01
µ
F
set
level meter
+
–
–
AM RF SSG
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
modulation by
400 Hz signal
Output level: as low as possible
set
speaker terminal
level meter
T1:AM IF
ADJUSTMENT
L1: AM TRACKING
ADJUSTMENT
CT3:FM TRACKING
ADJUSTMENT
CT1:AM TRACKING
ADJUSTMENT
CT4:FM FREQUENCY
COVERAGE
ADJUSTMENT
ADJUSTMENT
CT2:AM FREQUENCY
COVERAGE
ADJUSTMENT
ADJUSTMENT
L4: FM FREQUENCY
COVERAGE
ADJUSTMENT
ADJUSTMENT
L2: AM FREQUENCY
COVERAGE
ADJUSTMENT
ADJUSTMENT
IC1
+
–
–
frequency counter
10 pF
IC101 pin
wj
— 5 —
— 6 —
ICF-C135
SECTION 5
DIAGRAMS
5-1.
PRINTED WIRING BOARDS
— 7 —
— 8 —
• Semiconductor
Location
Ref. No. Location
D101
F-4
D201
F-6
D202
F-6
D203
C-7
D204
G-4
D205
G-3
IC1
D-4
IC101
G-4
LED101
H-4
Q1
F-2
Q201
D-6
Q202
D-7
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
• b
: Pattern from the side which enables seeing.
ICF-C135
5-2.
SCHEMATIC DIAGRAM
• IC Block Diagram
IC1
CXA1019S
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.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM
∗
: Impossible to measure
• 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 identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
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
— 9 —
— 10 —
RADIO
NOTE:
•
Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
•
-XX, -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
CAPACITORS:
uF: µF
uF: µF
•
RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
•
COILS
uH: µH
uH: µH
•
SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
When indicating parts by reference number,
please include the board name.
please include the board name.
The components identified by mark
0
or
dotted line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
le numéro spécifié.
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
SECTION 7
ELECTRICAL PARTS LIST
— 12 —
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
— 11 —
The components identified by mark
0
or
dotted line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
le numéro spécifié.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories and packing materials are given
in the last of the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
SECTION 6
EXPLODED VIEWS
not supplied
(PRIMARY board)
(PRIMARY board)
2
T101
not supplied
SP1
#2
#2
12
13
11
not supplied
SECONDARY
board
SECONDARY
board
(including A)
10
14
not supplied
not supplied
9
#1
8
7
6
5
A
3
1
1
3-040-753-01 HOLDER (LED)
2
3-040-750-01 PANEL, FRONT
3
3-012-759-21 BUTTON (FUNC.)
5
3-938-064-21 KNOB(FUNCTION)
6
3-938-059-41 CABINET (UPPER)
* 7
A-3663-419-A RADIO BOARD, COMPLETE
8
3-919-268-01 KNOB(VOL)
9
3-930-828-01 KNOB(TUNING)
10
3-040-752-01 POINTER
11
3-369-135-21 LID,BATTERY CASE
12
3-938-058-41 CABINET (LOWER)
13
3-368-852-01 FOOT
0 14
1-783-817-11 CORD, POWER
SP1
1-504-748-21 SPEAKER (6.6CM)
0 T101
1-435-201-11 TRANSFORMER, POWER
#1
7-685-647-79 SCREW +P 3X10 TYPE2 NON-SLIT
#2
7-685-154-19 SCREW +P 3X35 TYPE2 NON-SLIT
*
A-3663-419-A RADIO BOARD, COMPLETE
**********************
1-535-804-11 SNAP, BATTERY
3-922-610-01 HOLDER (ANTENNA)
3-922-610-01 HOLDER (ANTENNA)
< CAPACITOR >
C1
1-163-088-00 CERAMIC CHIP
5PF
50V
C2
1-163-233-11 CERAMIC CHIP
18PF
5%
50V
C3
1-163-102-00 CERAMIC CHIP
24PF
5%
50V
C4
1-163-251-11 CERAMIC CHIP
100PF
5%
50V
C5
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C6
1-126-964-11 ELECT
10uF
20%
50V
C7
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C8
1-126-963-11 ELECT
4.7uF
20%
50V
C9
1-126-963-11 ELECT
4.7uF
20%
50V
C10
1-126-964-11 ELECT
10uF
20%
50V
C11
1-163-033-91 CERAMIC CHIP
0.022uF
50V
C12
1-163-809-11 CERAMIC CHIP
0.047uF
10%
25V
C13
1-128-551-11 ELECT
22uF
20%
25V
C14
1-163-038-91 CERAMIC CHIP
0.1uF
25V
C15
1-126-924-11 ELECT
330uF
20%
10V
C16
1-164-505-11 CERAMIC CHIP
2.2uF
16V
C18
1-126-924-11 ELECT
330uF
20%
10V
C19
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C20
1-163-220-11 CERAMIC CHIP
3PF
0.25PF 50V
C30
1-162-282-31 CERAMIC
100PF
10%
50V
C31
1-162-600-11 CERAMIC
0.0047uF
20%
16V
C101
1-163-019-00 CERAMIC CHIP
0.0068uF
10%
50V
C102
1-163-021-91 CERAMIC CHIP
0.01uF
10%
50V
C103
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C104
1-163-038-91 CERAMIC CHIP
0.1uF
25V
C107
1-126-963-11 ELECT
4.7uF
20%
50V
C201
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C202
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C203
1-126-934-11 ELECT
220uF
20%
16V
C204
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C205
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C206
1-126-925-11 ELECT
470uF
20%
10V
C207
1-104-665-11 ELECT
100uF
20%
10V
< FILTER >
CF1
1-577-324-11 FILTER, CERAMIC
CF2
1-577-072-11 FILTER, CERAMIC
CF3
1-577-324-11 FILTER, CERAMIC
< CONNECTOR >
* CN701
1-568-272-11 SOCKET, CONNECTOR 6P
< TRIMMER >
CT1-4
1-141-522-11 CAP, VAR
< VARIABLE CAPACITOR >
CV1
1-141-522-11 CAP, VAR (TUNING)
< DIODE >
D1
8-719-911-19 DIODE 1SS119
D2
8-719-911-19 DIODE 1SS119
D101
8-719-911-19 DIODE 1SS119
D201
8-719-911-19 DIODE 1SS119
D202
8-719-052-88 DIODE 1N4002
D203
8-719-911-19 DIODE 1SS119
D204
8-719-052-88 DIODE 1N4002
D205
8-719-052-88 DIODE 1N4002
< IC >
IC1
8-752-037-02 IC CXA1019S
IC101
8-759-821-46 IC LM8560N
< JUMPER >
JC1
1-216-295-91 SHORT
0
< COIL >
L1
1-754-099-11 ANTENNA, FERRITE-ROD (MW)
L2
1-406-028-00 COIL, OSC (MW)
L4
1-428-229-11 COIL, AIR-CORE
< LED >
LED101 8-749-016-86 LED SL-3998-78T
< TRANSISTOR >
Q1
8-729-119-76 TRANSISTOR
2SA1175-HFE
Q201
8-729-011-92 TRANSISTOR
2SC2001TP-K1K2
Q202
8-729-119-76 TRANSISTOR
2SA1175-HFE
< RESISTOR >
R2
1-216-017-91 RES-CHIP
47
5%
1/10W
R4
1-216-057-00 METAL CHIP
2.2K
5%
1/10W
R5
1-216-057-00 METAL CHIP
2.2K
5%
1/10W
R101
1-216-105-91 RES-CHIP
220K
5%
1/10W
R102
1-216-097-91 RES-CHIP
100K
5%
1/10W
R103
1-216-097-91 RES-CHIP
100K
5%
1/10W
R104
1-216-089-91 RES-CHIP
47K
5%
1/10W
R105
1-216-081-00 METAL CHIP
22K
5%
1/10W
R204
1-216-009-91 RES-CHIP
22
5%
1/10W
R205
1-216-041-00 METAL CHIP
470
5%
1/10W
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