Sony ICF-703 / ICF-703L Service Manual ▷ View online
4-2. SCHEMATIC DIAGRAMS
– 11 –
– 12 –
ICF-703/703L
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
(
) : AM or LW
• 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
• Abbreviation
IT
: Italian model
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
– 15 –
SECTION 6
ELECTRICAL PARTS LIST
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
*
1-677-379-11 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-3683-164-A MAIN BOARD, COMPLETE (703L)
*
A-3683-177-A MAIN BOARD, COMPLETE (703:AEP)
*
A-3683-196-A MAIN BOARD, COMPLETE (703:IT)
*********************
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
< FILTER >
BPF1
1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C1
1-163-102-00 CERAMIC CHIP
24PF
5.00%
50V
(703L)
C2
1-163-141-00 CERAMIC CHIP
0.001uF
5%
50V
(703L)
C3
1-163-103-00 CERAMIC CHIP
27PF
5%
50V
(EXCEPT 703:IT)
C3
1-163-105-00 CERAMIC CHIP
33PF
5%
50V
(703:IT)
C4
1-163-103-00 CERAMIC CHIP
27PF
5%
50V
(EXCEPT 703:IT)
C4
1-163-105-00 CERAMIC CHIP
33PF
5%
50V
(703:IT)
C6
1-163-255-11 CERAMIC CHIP
150PF
5.00%
50V
(703L)
C7
1-124-261-00 ELECT
10uF
20%
50V
C8
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C9
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C10
1-124-259-11 ELECT
4.7uF
20.00% 16V
C12
1-163-021-91 CERAMIC CHIP
0.01uF
10.00% 50V
C13
1-124-259-11 ELECT
4.7uF
20.00% 16V
C14
1-124-259-11 ELECT
4.7uF
20.00% 16V
C15
1-124-261-00 ELECT
10uF
20%
50V
C16
1-104-760-11 CERAMIC CHIP
0.047uF
10.00% 50V
C17
1-164-005-11 CERAMIC CHIP
0.47uF
25V
C18
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C19
1-163-989-11 CERAMIC CHIP
0.033uF
10%
25V
(703L)
C20
1-104-760-11 CERAMIC CHIP
0.047uF
10.00% 50V
C21
1-124-234-00 ELECT
22uF
20%
16V
C22
1-126-925-11 ELECT
470uF
20.00% 10V
C23
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C24
1-109-982-11 CERAMIC CHIP
1uF
10.00% 10V
C25
1-163-009-11 CERAMIC CHIP
0.001uF
10%
50V
C31
1-102-998-11 CERAMIC
5PF
0.50PF 50V
(EXCEPT 703 : IT)
(EXCEPT 703 : IT)
C31
1-102-942-00 CERAMIC CHIP
5PF
0.50PF 50V
(703 : IT)
C37
1-163-088-00 CERAMIC CHIP
5PF
50V
< FILTER >
CF1
1-578-677-11 FILTER, CRYSTAL
CF2
1-577-600-81 FILTER, CERAMIC
CF3
1-577-600-81 FILTER, CERAMIC
CF4
1-577-600-81 FILTER, CERAMIC
< TRIMMER >
CT5
1-141-355-21 CAP, TRIMMER 30PF (703L)
CT6
1-141-320-11 CAP, TRIMMER 45PF (703L)
< VARIABLE CAPACITOR >
CV1
1-151-631-12 CAP, VARIABLE (TUNING)
< DIODE >
D1
8-719-800-76 DIODE 1SS226
< IC >
IC1
8-752-037-02 IC CXA1019S
< JUMPER RESISTOR >
JC1
1-216-296-91 SHORT
0 (703L)
JC2
1-216-296-91 SHORT
0 (703)
JC3
1-216-295-91 SHORT
0
JC4
1-216-296-91 SHORT
0
JC5
1-216-296-91 SHORT
0
JC6
1-216-296-91 SHORT
0
JC7
1-216-296-91 SHORT
0
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
IT
: Italian 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.
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