Sony ICF-703S Service Manual ▷ View online
4-2. SCHEMATIC DIAGRAMS
– 11 –
– 12 –
ICF-703S
Note:
• 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.
• Total current is measured with power on.
• Power voltage is dc 4.5 V and fed with regulated dc power
• Power voltage is dc 4.5 V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : MW
<
> : SW
• 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
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
SECTION 5
EXPLODED VIEW
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories and packing materials are given in
the last of this parts list.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
– 13 –
1
X-3379-334-1 CABINET (FRONT) SUB ASSY (BLACK)
1
X-3379-337-1 CABINET (FRONT) SUB ASSY (WHITE)
1
X-3381-198-1 CABINET (FRONT) SUB ASSY (DARK BLACK)
2
3-043-337-01 KNOB (CONTROL) (BLACK,DARK BLACK)
2
3-043-337-11 KNOB (CONTROL) (WHITE)
3
3-043-343-01 KNOB (BAND) (BLACK,DARK BLACK)
3
3-043-343-11 KNOB (BAND) (WHITE)
4
3-043-347-01 POINTER
5
3-043-348-01 RACK (POINTER)
6
3-043-330-01 CHASSIS
* 7
1-677-384-11 LED BOARD
* 8
1-677-383-11 POWER BOARD
9
3-043-339-01 BUTTON (POWER) (BLACK,DARK BLACK)
9
3-043-339-11 BUTTON (POWER) (WHITE)
10
3-043-344-21 BAND, GEAR
11
3-043-349-01 GEAR (A), MIDWAY
12
3-043-721-01 SPRING (BAND)
13
3-048-207-01 RING (BAND)
14
3-043-350-01 GEAR (B), MIDWAY
15
3-043-345-01 SLIDER (BAND)
16
7-685-532-14 SCREW +BTP 2.6X5 TYPE2 N-S
17
7-685-547-19 SCREW +BTP 3X10 TYPE2 N-S
18
7-685-550-14 SCREW +BTP 3X16 TYPE2 N-S
* 19
A-3683-172-A MAIN BOARD, COMPLETE
20
3-043-346-01 HOLDER, FERRITE-ROD ANTENNA
21
3-043-342-01 DRUM(A), VC
22
3-364-941-11 SCREW (+B) (2.6X5), NYLOCK
23
3-043-338-01 KNOB (TUNING) (BLACK,DARK BLACK)
23
3-043-338-11 KNOB (TUNING) (WHITE)
24
3-045-680-01 SPRING (TUNING)
25
3-043-336-01 SHAFT (TUNING)
26
7-671-112-11 BALL, STEEL
27
7-685-534-14 SCREW +BTP 2.6X8 TYPE2 N-S
28
3-049-870-01 WOVEN (VOL), FABRIC NON
29
3-831-441-99 CUSHION
* 30
3-363-397-01 DRUM (B)
31
3-363-366-11 SPRING, DRUM
SP1
1-529-676-11 SPEAKER (10.2cm)
0T401
1-435-513-11 TRANSFORMER, POWER
R
R
5-1. CABINET (FRONT) SECTION
The components identified by
mark
mark
0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
SP1
T401
2
1
3
4
5
6
7
8
17
17
17
18
18
10
9
11
12
13
14
15
16
19
20
28
27
21
30
22
23
24
25
26
29
31
Ver 1.1
– 14 –
51
3-045-684-01 CABINET (REAR) (BLACK)
51
3-045-684-11 CABINET (REAR) (WHITE)
51
3-045-684-21 CABINET (REAR) (DARK BLACK)
52
3-049-207-01 CUSHION (BATTERY) (B)
53
3-049-448-01 CUSHION (BATTERY) (D)
54
3-043-717-01 SPRING (HANDLE)
55
7-685-903-31 SCREW +PTPWH 3X10 (TYPE2)
56
3-049-447-01 CUSHION (BATTERY) (C)
57
3-043-335-01 SHAFT (HANDLE)
58
7-685-903-21 SCREW +PTPWH 3X8 (TYPE2)
59
3-049-592-01 SPRING (HANDLE) (B)
60
7-685-534-14 SCREW +BTP 2.6X8 TYPE2 N-S
61
7-623-508-01 LUG, 3
62
3-043-334-01 HANDLE (BLACK)
62
3-043-334-11 HANDLE (WHITE)
63
3-043-334-21 HANDLE (DARK BLACK)
63
3-043-718-01 TERMINAL (+.–), BATTERY
64
3-049-208-01 CUSHION (HANDLE)
65
3-043-331-01 LID, BATTERY CASE (BLACK)
65
3-043-331-11 LID, BATTERY CASE (WHITE)
65
3-043-331-21 LID, BATTERY CASE (DARK BLACK)
66
9-911-815-02 CUSHION
67
3-043-719-01 TERMINAL (+), BATTERY
68
3-043-720-01 TERMINAL (–), BATTERY
ANT1
1-501-222-71 ANTENNA, TELESCOPIC (FM/SW)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-2. CABINET (REAR) SECTION
ANT1
59
60
61
57
58
62
64
63
65
66
67
68
56
54
55
51
52
53
– 15 –
SECTION 6
ELECTRICAL PARTS LIST
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
*
1-677-384-11 LED BOARD
**********
< DIODE >
D301
8-719-080-08 LED SLP145B-51 (TUNE)
< RESISTOR >
R301
1-216-057-00 METAL CHIP
2.2K
5%
1/10W
R302
1-216-061-00 METAL CHIP
3.3K
5%
1/10W
*************************************************************
*
A-3683-172-A MAIN BOARD, COMPLETE
*********************
3-043-346-01 HOLDER, FERRITE-ROD ANTENNA
3-049-870-01 WOVEN (VOL), FABRIC NON
7-685-534-14 SCREW +BTP 2.6X8 TYPE2 N-S
3-049-870-01 WOVEN (VOL), FABRIC NON
7-685-534-14 SCREW +BTP 2.6X8 TYPE2 N-S
< BPF >
BPF1
1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C3
1-163-103-00 CERAMIC CHIP
27PF
5%
50V
C4
1-163-103-00 CERAMIC CHIP
27PF
5%
50V
C5
1-102-959-00 CERAMIC
22PF
5%
50V
C6
1-102-951-00 CERAMIC
15PF
5%
50V
C7
1-124-261-00 ELECT
10uF
20%
50V
C8
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C9
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C10
1-124-259-11 ELECT
4.7uF
20%
16V
C12
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C13
1-124-259-11 ELECT
4.7uF
20%
16V
C14
1-124-259-11 ELECT
4.7uF
20%
16V
C15
1-124-261-00 ELECT
10uF
20%
50V
C16
1-163-809-11 CERAMIC CHIP
0.047uF
10%
25V
C17
1-164-492-11 CERAMIC CHIP
0.15uF
10%
16V
C18
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C19
1-164-343-11 CERAMIC CHIP
0.056uF
10%
25V
C20
1-163-809-11 CERAMIC CHIP
0.047uF
10%
25V
C21
1-124-234-00 ELECT
22uF
20%
16V
C22
1-126-925-11 ELECT
470uF
20%
10V
C23
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C24
1-109-982-11 CERAMIC CHIP
1uF
10%
10V
C25
1-163-009-11 CERAMIC CHIP
0.001uF
10%
50V
C26
1-104-896-11 CERAMIC CHIP
24PF
2%
50V
C37
1-163-096-00 CERAMIC CHIP
13PF
5%
50V
C38
1-163-141-00 CERAMIC CHIP
0.001uF
5%
50V
C40
1-104-732-11 FILM
390PF
5%
100V
C41
1-136-682-11 FILM
0.0039uF 5%
100V
< FILTER >
CF1
1-567-177-00 FILTER, CERAMIC
CF2
1-577-600-81 FILTER, CERAMIC
CF3
1-577-600-81 FILTER, CERAMIC
CF4
1-577-600-81 FILTER, CERAMIC
< VARIABLE CAPACITOR >
CT1-4
1-151-679-11 CAP, VAR
CV1-4
1-151-679-11 CAP, VAR (TUNING)
< TRIMMER >
CT5
1-141-354-21 CAP, TRIMMER
10PF
CT6
1-141-354-21 CAP, TRIMMER
10PF
< DIODE >
D1
8-719-800-76 DIODE 1SS226
< IC >
IC1
8-752-037-02 IC CXA1019S
< JUMPER RESISTOR >
JC3
1-216-296-00 SHORT
0
JC4
1-216-296-00 SHORT
0
JC5
1-216-296-00 SHORT
0
JC6
1-216-296-00 SHORT
0
JC7
1-216-295-00 SHORT
0
JC8
1-216-295-00 SHORT
0
JC9
1-216-295-00 SHORT
0
< COIL >
L1
1-754-132-11 ANTENNA, FERRITE-ROD (MW)
L4
1-406-431-11 COIL (WITH CORE) (OSC)
L5
1-406-092-11 COIL, OSC (MW)
L6
1-402-538-11 COIL, SW (ANT)
L7
1-406-413-11 COIL, SW (OSC)
L8
1-428-291-11 COIL, AIR-CORE
L9
1-428-291-11 COIL, AIR-CORE
L10
1-412-959-11 INDUCTOR
47uH
L11
1-410-997-22 INDUCTOR CHIP 2.2uH
MAIN
LED
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 specified in the diagrams or the
components used on the set.
• RESISTORS
All resistors are in ohms.
METAL:Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F:nonflammable
METAL:Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F:nonflammable
• Abbreviation
AUS : Australian model
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• SEMICONDUCTORS
In each case, u : µ, for example:
uA.. : µA..
uA.. : µA..
uPA.. : µPA..
uPB.. : µPB.. uPC.. : µPC.. uPD.. : µPD..
• CAPACITORS
uF : µF
• COILS
uH : µH
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
number, please include the board.
Click on the first or last page to see other ICF-703S service manuals if exist.