Page 1
ICF-903L
SERVICE MANUAL
Ver 1.0 2000. 04
(Photo: BLACK)
SPECIFICATIONS
Frequency range:
Band
FM 87.5 - 108.0 MHz
SW 5.95 - 18 MHz
MW 530 - 1605 kHz
LW 153 - 255 kHz
AEP Model
UK Model
Speaker:
Approx. 10.2 cm (4
Power output:
430 mW (at 10 % harmonic distortion)
Output:
v jack (ø 3.5 mm minijack)
Power requirements:
With the supplied AC power cord:
220 - 230 V AC, 50 Hz
With four R6 (size AA) batteries: 6V DC
Dimensions:
Approx. 265 × 137 × 69 mm (w/h/d)
(10 1/2 × 5 1/2 × 2 3/4 inches) incl. projecting parts
and control with carrying handle pushed in.
Mass:
Approx. 1081 g (2 lb 6 oz) incl. batteries
Supplied accessory:
AC power cord (1)
Design and specifications are subject to change without
notice.
1/8 inches) dia. 8 Ω
– 1 –
FM/SW/MW/LW 4 BAND RADIO
Page 2
HOW TO CHANGE THE CERAMIC FILTERS
This model is used two ceramic filters of CF2, CF3 and CF4.
You must use same type of color marked ceramic filters in order to
meet same specifications.
Therefore, the ceramic filter must change two pieces together since
it’s supply two pieces in one package as a spare parts.
markmark
CF4
• white/white only
mark mark
CF4
CF2
CF3
CF2
CF3
mark
red 10.70 MHz
blue 10.67 MHz
orange 10.73 MHz
black 10.64 MHz
white 10.76 MHz
white/white 10.75 MHz
yellow 10.79 MHz
Center
Frequency
TABLE OF CONTENTS
1. GENERAL
Choosing Power Sources .............................................................. 3
Operating the Radio Manual Tuning ............................................ 3
2. DISASSEMBLY
2-1. Cabinet (Rear) ..................................................................... 4
2-2. Power Board........................................................................4
2-3. Main Board, Key Board ...................................................... 5
2-4. Setting the Pointer ............................................................... 5
3. ELECTRICAL ADJUSTMENTS
3-1. MW section ......................................................................... 6
3-2. LW section .......................................................................... 6
3-3. SW section .......................................................................... 7
3-4. FM section...........................................................................7
4. DIAGRAMS
4-1. Block Diagram ....................................................................9
4-2. Printed Wiring Boards (1/2) .............................................. 11
4-3. Printed Wiring Board (2/2)................................................13
4-4. Schematic Diagrams.......................................................... 15
5. EXPLODED VIEWS
5-1. Cabinet (Front) Section ..................................................... 17
5-2. Cabinet (Rear) Section ...................................................... 18
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
6. ELECTRICAL PARTS LIST .................................... 19
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY P AR TS WHOSE
P AR T NUMBERS APPEAR AS SHO WN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
Page 3
SECTION 1
GENERAL
This section is extracted
from instruction manual.
– 3 –
Page 4
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Set Cabinet (Rear) Power Board Main Board, Key Board Setting the Pointer
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (REAR)
4 BTP 3x16
lid, battery case
2 BTP 3x16
3 BTP 3x16
1
5 cabinet (rear)
6
2-2. POWER BOARD
5 button (power)
2
1 BTP 3x10
6 POWER board
4 Removal the solders.
WHT
/BLK
CN401
WHT/BLK
BLK
3 CN401
– 4 –
Page 5
2-3. MAIN BOARD, KEY BOARD
5 KEY board
4 BTP 2.6x5
qd claws
qj CN201
qf
qa BTP 3x10
qg Removal the solders.
0 BTP 3x10
qh MAIN board
9 gear, VOL
7 drum (A), VC
8 drum (B)
6 B 2.6x5, nylock
qs claws
2-4. SETTING THE POINTER
• Setting the Pointer
1. Turn the Knob (Tuning) in the direction of A until it is stopped.
2. Place the rack as shown in the figure.
3. Mount the pointer.
rack (pointer)
2 knob (band)
3 chassis
1 knob (control)
A
2 pointer
1 rack (pointer)
gear, VOL drum (B)
– 5 –
Page 6
r
r
e
e
SECTION 3
ELECTRICAL ADJUSTMENTS
3-1. MW SECTION
BAND switch : MW
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
set
v
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
Put the lead-wir
antenna close to
the set.
level mete
16 Ω
jack (EPJ1)
3-2. LW SECTION
BAND switch : LW
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
set
v
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
Put the lead-wir
antenna close to
the set.
level mete
16 Ω
jack (EPJ1)
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L5 520 kHz
CT4 1,650 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2-1 600 kHz
CT1 1,400 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
CT6 145 kHz
<confirmation> 265 kHz
L W TRA CKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2-2 160 kHz
CT2 240 kHz
– 6 –
Page 7
r
r
3-3. SW SECTION
SW
TRACKING
ADJUSTMENT
L2-2
LW
TRACKING
ADJUSTMENT
MW
FREQUENCY
COVERAGE
ADJUSTMENT
CT6
LW
FREQUENCY
COVERAGE
ADJUSTMENT
RV201
FM
VT VOLTAGE
ADJUSTMENT
FM
FREQUENCY
COVERAGE
ADJUSTMENT
T1
MW
IF
ADJUSTMENT
FM
TRACKING
ADJUSTMENT
– MAIN BOARD (COMPONENT SIDE) –
SW
FREQUENCY
COVERAGE
ADJUSTMENT
L2-1
MW
TRACKING
ADJUSTMENT
CT1
MW
TRACKING
ADJUSTMENT
CT2
LW
TRACKING
ADJUSTMENT
TP9 (VT)
(conductor side)
L9, L10, CT7
L5, CT4
CT5, L6
L3
CT3
L8
CT8
r
3-4. FM SECTION
Adjustment Location: MAIN BOARD
BAND switch : SW
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
set
v
jack (EPJ1)
telescopic
antenna terminal
12 pF
set
level mete
16 Ω
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
SW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L6 5.8 MHz
CT5 18.5 MHz
BAND switch : FM
FM RF signal
generator
400Hz, 30% FM modulation
frequency deviation ±22.5kHz
Output level: as low as possible
set
v
jack (EPJ1)
telescopic
antenna terminal
0.01µF
set
level mete
16 Ω
• Repeat the procedures in each adjustment several times, and the
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
L8 86.5 MHz
CT8 109.5 MHz
SW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 5.8 MHz
CT3 18.5 MHz
• Connecting Digital Voltmeter
Frequency Display 86.5 MHz
Reading on Digital voltmeter 1.0 ± 0.1 V
Adjustment Part RV201
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L9, L10 86.5 MHz
CT7 109.5 MHz
digital
voltmete
tuner board
TP9 (VT)
FM VT VOLTAGE ADJUSTMENT
– 7 – – 8 –
Page 8
ICF-903L
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM
KEY BOARD
D302
FM1
D304
FM2
D303
FM3
04
SW304
MANUAL
SW301
FM1
SW302
FM2
SW303
FM3
D301
TUNE
ANT1
FM/SW
TELESCOPIC
ANTENNA
FM1
FM2
FM3
MAIN BOARD
CN201
Q9
FM
SW
DET
L2-1, CT1
MW
ANT
FMMWLW
S1-3
PON 3V
X201
3.68MHz
CT1, L2-1
MW
TRACKING
L2-2, CT2
LW
ANT
SW
CV1-1
TUNING
S1-1
(FM)
D5
D201
Q202
KEY IN CONTROL
KI/02 KI/06
17 1
14
KI3
11
KI0
12
KI1
13
KI2
7
XIN
8
XOUT
CT2, L2-2
LW
TRACKING
L3, CT3
SW
ANT
Q1
FM FREQUENCY
COVERAGE
IC201
KI/04
KI/03
KI/07
KI/01
CT3, L3
SW
TRACKING
SWLWMWFMFMMWLW
S1-4
BPF1
FM
BPF
CT8, L8
L8,L9, L10,
CT7, CT8
FM3
FM2
FM1
19
20
2
16
S1-5
11
13
D2, 3
5
7
9
11
AM
ANT
FM
ANT
IC205
IC205
IC205
IC205
FM
RF
14
SW
6
AM
OSC
AM
FE
FM FE
10 8
FM
OSC
2
1
13
CT4, L5
L6, CT5
SW
OSC
SWLWMW
FM
OSC
CT7, L9, L10
TRACKING
IC202
SWITCH
1 2
13
11 10
12
9 8
6
3 4
5
CT6
FM
B+
MW/LW
OSC
CV1-2
TUNING
15
S1-6
(LW)
FM
10.7MHz
S1-7
T1
455kHz
CF2
RV205
FM1
RV206
FM2
RV208
FM3
RV202
(FM TUNING)
RV201
FM VT
VOLTAGE
CT6
LW FREQUENCY
COVERAGE
CT4, L5
MW FREQUENCY
COVERAGE
CT5, L6
SW FREQUENCY
COVERAGE
T1
MW
IF
CF1
455kHz
CF3
10.7MHz
PON 3V
17
18
10.7MHz
POWER
CONT
CF4
Q203
PON 6V
AM IF
DET/AGC
TUNING
METER
FM IF
3
3V
Q101, 102
IC2
FM/AM CIRCUIT
AF POWER AMP
RV2
TONE
Q6-8
LPF
24 25 28
CONT
20
POWER
CONT
Q201
PON 6V
ON/OFF
S1-1
(LW/SW)
PON 3V
Q103
DRIVE
3 5
6V 3V
2 1
IC101
DC/DC
CONV
CONT
2
IC204
3V
REG
D101
AF
POWER
AMP
5
ATT
EPJ1
v
CN401
(1/2)
S401
Q2
RV1
VOL
PON 6V
6V
PON 8V
OPERATION
STANDBY ON
TRANSFORMER
T401
POWER
D402D401
CN401
(2/2)
SPEAKER
1.5V x 4
SP1
ACJ1
AC IN
POWER BOARD
• Signal path
: MW
: FM
– 9 – – 10 –
Page 9
4-2. PRINTED WIRING BOARDS (1/2)
ICF-903L
A
B
C
D
E
F
1
MAIN
BOARD
(Page 14)
234567891011121314
MAIN BOARD
CN201
(Page 13)
POWER BOARD
1
KEY BOARD
T401
POWER
TP310(+B)
WHT/
BLK
2
BLK
R302
R301
TP311
(TUNE LED)
SW304
MANUAL
D301
TUNE
TP306
(MANU)
R306
JC303
C304
TP308
(LED2)
JC302
C303
TP305
(PRE3)
R305
D303
FM3
SW303
FM3
R307
TP301
JC301
TP304
(PRE2)
TP307
(LED3)
C302
R304
PRESET
D304
FM2
SW302
FM2
TP303
(PRE1)
TP302
C301
TP309
(LED1)
R303
D302
FM1
SW301
FM1
1-677-388-
11
(11)
C401
ACJ1
~ AC IN
TP404
WHT/BLK
TRANSFOMER
TP406 TP405
C403
C404
CN401
1
6
D401
D402
TP403
JC402
TP402
1
4
5
6
WHT/BLK
BLK
BLK
BLK
BLK
BRN
3
MAIN BOARD
CN1
(Page 13)
SPEAKER
SP1
G
H
J
BLK
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
4PCS, 6V
I
04
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
f
•
• b : Pattern from the side which enables seeing.
: internal component.
• Semiconductor
Location
Ref. No. Location
D301 C-3
D302 C-7
D303 C-4
D304 C-6
D401 D-12
D402 D-12
EPJ1
v
R401
C406
C402
L401
R402
TP401
S401
1-677-386-
S401
OPERATION
ON
STANDBY
11
(11)
– 11 – – 12 –
Page 10
ICF-903L
4-3. PRINTED WIRING BOARD (2/2)
1
A
B
C
• Semiconductor Location
Ref. No. Location Ref. No. Location
D1 H-6
D2 E-8
D3 E-9
D5 I-8
D101 B-12
D
D201 I-2
D202 F-7
D203 B-11
IC2 D-10
IC101 B-12
IC201 H-3
IC202 I-5
E
IC204 E-6
IC205 I-3
F
234567891011121314
KEY
BOARD
C21
C34 C44
C35
R6
TP8
(REG)
C30
CT8
FM2
C23
2
C22
C26
C24
JC25
CN301
C45C33
R26
JC26
(Page 11)
JC31
C28
IC2
R18
JC32
C27
C29
JC33
CF4
JC27
RV208
FM3
R101
D203
R208
RV202
(FM TUNING)
C31
Q2
E C B
CT4
CV1-2 CV1-1
C105
D101
TP12(D/D)
R216
C32
C10
Q103
C107
C9
B C E
L101
R107
CV1
TUNING
C104
L102
R23
R103
C101
135
IC101
C102
RV201
CT6
R104
4
R105
RV2
TONE
C38
RV1
VOL
JC28
R17
L5
C7
Q1 H-6
Q2 D-11
Q3 C-8
Q4 C-8
Q5 B-8
Q6 B-8
Q7 C-8
Q8 C-8
Q9 I-8
Q101 B-6
Q102 B-6
Q103 B-12
Q201 H-3
Q202 H-2
Q203 H-4
L2-2
LW
GRN
BLU
ANT1
TELESCOPIC
ANTENNA
L2
FERRITE-ROD
ANTENNA
FM
POWER
BOARD
CN401
(Page 12)
L2-1
MW
RED
BLK
3
CLEAR
MAIN BOARD
WHT/BLK
BLK
BLK
BLK
TP7
(GND)
Q102
R106 R102
C205
JC36
R214
JC22
B C E
Q101
4
C106
JC37
E C B
TP4(+B)
TP5
(REG)
IC204
135
TP22
JC21
JC29
TP19
JC15
TP6 (AUDIO)
JC38
T1
C18
R13
D202
R210
R14
R11
R211 C41
Q6
Q5
E C B
E C B
Q8
Q3
E C B
Q4
CF2
CT7
TP9(VT)
BPF1
R8
C14
D2
RV205
FM1
E C B
E C B
Q7
E C B
CF3
C36
(TULED)
GND
L10
C12
R3
C37
TP32
TP33 (BAND)
TP
RF
32
L9
C13
WHT
JC30
1
/BLK
BLK
2
C20
CF1
16 20 30
1
TP2
(FM ANT)
JC24
JC34
R9
C16
R4
TP3
(DETOUT)
L8
C15
RV206
FM PRESET
C19
15 10 1
D3
G
H
I
J
RED
GRN
CLEAR
D5
CT2
C4
C6
R2
C5
JC14
S1-3
S1-2
Q9
B C E
C43
C204
X201
C202
R215
R206
R212
TP24
R204
TP25
(RESET)
C203
B C E
TP18
R205
TP13
JC7
Q203
8147
IC202
C206
JC9
R213
1
R203
TP17
R202
C201
R209
TP16
TP15
TP20
JC8
D1
C1
R1
Q1
L1C2C3
CT3
B C E
JC11
JC13
JC12
L3
TP1
(ANT)
BLK
BLU
S1-4
L4
S1-1
Q201
R201
11
IC201
20101
7
R207
1
91
IC205
TP14
C207
TP23
JC6
8
14
C208
R20
B C E
JC5
Q202
TP32
B C E
D201
TP26
04
CN201
TP29
TP31
JC3
TP27
JC4
JC2
JC1
TP28
TP21
TP30
1
KEY BOARD
CN301
(Page 11)
L6
CT1
JC16
C42
R25
S1
(BAND)
SW LW MW FM
CT5
S1-6
JC17
S1-8
C8
C11
JC20
S1-7
JC18
JC19
S1-5
Note:
11
1-677-385-
• X : parts extracted from the component side.
(11)
• Y : parts extracted from the conductor side.
f
•
: internal component.
• b : Pattern from the side which enables seeing.
– 13 – – 14 –
Page 11
4-4. SCHEMATIC DIAGRAMS
ICF-903L
– 15 – – 16 –
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
f
•
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Total current is measured with power on.
• Po wer voltage is dc 4.5 V and fed with regulated dc pow er
• Voltage is dc with respect to ground under no-signal
• Voltages are taken with a V OM (Input impedance 10 MΩ).
• Signal path.
Note: The components identified by mark 0 or dotted line
: internal component.
supply from battery terminal.
(detuned) condition.
no mark : FM
( ) : MW/LW/SW
Voltage variations may be noted due to normal production tolerances.
F : FM
f : MW
with mark 0 are critical for safety.
Replace only with part number specified.
4
W or less unless otherwise
Page 12
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.
5-1. CABINET (FRONT) SECTION
9
SECTION 5
EXPLODED VIEWS
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
R
Parts Color Cabinet’s Color
• Accessories and packing materials are given in
the last of this parts list.
17
R
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
18
5-2. CABINET (REAR) SECTION
ANT1
63
8
30
T401
35
SP1
16
7
15
14
12
26
34
17
18
10
3
13
11
27
20
17
21
5
4
6
25
28
19
24
23
33
22
1
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 X-3379-339-1 CABINET (FRONT) SUB ASSY
1 X-3379-346-1 CABINET (FRONT) SUB ASSY
(WHITE)...(WHITE) (AEP)
2 3-043-337-01 KNOB (CONTROL) (BLACK)...(BLACK)
2 3-043-337-11 KNOB (CONTROL) (WHITE)...(WHITE) (AEP)
3 3-043-343-01 KNOB (BAND) (BLACK)...(BLACK)
3 3-043-343-11 KNOB (BAND) (WHITE)...(WHITE) (AEP)
4 3-043-347-01 POINTER
5 3-043-348-01 RACK (POINTER)
6 3-043-330-01 CHASSIS
* 7 A-3683-174-A KEY BOARD, COMPLETE
* 8 1-677-386-11 POWER BOARD
9 3-043-339-01 BUTTON (POWER) (BLACK)...(BLACK)
9 3-043-339-11 BUTTON (POWER) (WHITE)...(WHITE) (AEP)
10 3-043-344-01 GEAR (BAND)
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
2
(BLACK)...(BLACK)
31
18 7-685-550-14 SCREW +BTP 3X16 TYPE2 N-S
* 19 A-3683-173-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)...(BLACK)
23 3-043-338-11 KNOB (TUNING) (WHITE)...(WHITE) (AEP)
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 3-043-352-01 BUTTON (PRESET) (BLACK)...(BLACK)
29 3-043-352-11 BUTTON (PRESET) (WHITE)...(WHITE) (AEP)
30 3-043-354-01 HOLDER (LED)
31 3-363-366-11 SPRING, DRUM
32 3-043-341-01 GEAR, VOL
* 33 3-363-397-01 DRUM (B)
34 3-831-441-99 CUSHION
35 4-884-058-01 CUSHION
SP1 1-529-676-11 SPEAKER (10.2cm)
0 T401 1-435-513-11 TRANSFORMER, POWER
32
61
65
66
69
60
62
64
59
58
67
68
57
56
51
54
53
52
55
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
51 3-043-329-01 CABINET (REAR) (BLACK)...(BLACK)
51 3-043-329-11 CABINET (REAR) (WHITE)...(WHITE) (AEP)
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 3-043-718-01 TERMINAL (+.–), BATTERY
63 3-043-334-01 HANDLE (BLACK)...(BLACK)
63 3-043-334-11 HANDLE (WHITE)...(WHITE) (AEP)
64 3-049-208-01 CUSHION (HANDLE)
65 3-043-331-01 LID, BATTERY CASE (BLACK)...(BLACK)
65 3-043-331-11 LID, BATTERY CASE (WHITE)...(WHITE) (AEP)
66 9-911-815-02 CUSHION
67 3-043-719-01 TERMINAL (+), BATTERY
68 3-043-720-01 TERMINAL (–), BATTERY
69 3-043-353-01 COVER, PRESET (BLACK)...(BLACK)
69 3-043-353-11 COVER, PRESET (WHITE)...(WHITE) (AEP)
ANT1 1-501-222-71 ANTENNA, TELESCOPIC (FM/SW)
– 17 – – 18 –
Page 13
SECTION 6
ELECTRICAL PARTS LIST
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.
• RESISTORS
All resistors are in ohms.
METAL:Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F:nonflammable
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
* A-3683-174-A KEY BOARD, COMPLETE
********************
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
• SEMICONDUCTORS
In each case, u : µ, for example:
uA.. : µA.. uPA.. : µPA..
uPB.. : µPB.. uPC.. : µPC.. uPD.. : µPD..
• CAPACITORS
uF : µF
• COILS
uH : µH
* A-3683-173-A MAIN BOARD, COMPLETE
The components identified by
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.
*********************
MAINKEY
3-043-354-01 HOLDER (LED)
< CAPACITOR >
C301 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C302 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C303 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C304 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
< DIODE >
D301 8-719-080-08 LED SLP145B-51 (TUNE)
D302 8-719-080-08 LED SLP145B-51 (PRESET FM1)
D303 8-719-080-08 LED SLP145B-51 (PRESET FM3)
D304 8-719-080-08 LED SLP145B-51 (PRESET FM2)
< JUMPER RESISTOR >
JC301 1-216-296-00 SHORT 0
JC302 1-216-296-00 SHORT 0
JC303 1-216-295-00 SHORT 0
< RESISTOR >
R301 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R302 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R303 1-216-049-11 RES-CHIP 1K 5% 1/10W
R304 1-216-049-11 RES-CHIP 1K 5% 1/10W
R305 1-216-049-11 RES-CHIP 1K 5% 1/10W
R306 1-216-049-11 RES-CHIP 1K 5% 1/10W
R307 1-216-033-00 METAL CHIP 220 5% 1/10W
< SWITCH >
SW301 1-692-444-11 SWITCH, KEY BOARD (PRESET FM1)
SW302 1-692-444-11 SWITCH, KEY BOARD (PRESET FM2)
SW303 1-692-444-11 SWITCH, KEY BOARD (PRESET FM3)
SW304 1-692-444-11 SWITCH, KEY BOARD (MANUAL)
*************************************************************
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
< BPF >
BPF1 1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C1 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C2 1-163-102-00 CERAMIC CHIP 24PF 5% 50V
C3 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C4 1-163-096-00 CERAMIC CHIP 13PF 5% 50V
C5 1-163-129-00 CERAMIC CHIP 330PF 5% 50V
C6 1-163-121-00 CERAMIC CHIP 150PF 5% 50V
C7 1-102-949-00 CERAMIC 12PF 5% 50V
C8 1-102-949-00 CERAMIC 12PF 5% 50V
C9 1-136-355-11 FILM 330PF 5% 100V
C10 1-104-732-11 FILM 390PF 5% 100V
C11 1-136-682-11 FILM 0.0039uF 5% 100V
C12 1-163-088-00 CERAMIC CHIP 5PF 50V
C13 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C14 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C15 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C16 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C18 1-163-125-00 CERAMIC CHIP 220PF 5% 50V
C19 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C20 1-124-259-11 ELECT 4.7uF 20% 16V
C21 1-124-259-11 ELECT 4.7uF 20% 16V
C22 1-124-261-00 ELECT 10uF 20% 50V
C23 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C24 1-164-492-11 CERAMIC CHIP 0.15uF 10% 16V
C26 1-124-234-00 ELECT 22uF 20% 16V
C27 1-126-925-11 ELECT 470uF 20% 10V
C28 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C29 1-164-346-11 CERAMIC CHIP 1uF 16V
C30 1-164-039-11 CERAMIC 3PF 5% 50V
C31 1-124-259-11 ELECT 4.7uF 20% 16V
C32 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
– 19 –
C33 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C34 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C35 1-124-261-00 ELECT 10uF 20% 50V
C36 1-164-343-11 CERAMIC CHIP 0.056uF 10% 25V
Page 14
MAIN
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
C37 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C38 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C41 1-164-346-11 CERAMIC CHIP 1uF 16V
C42 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C43 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C44 1-163-085-00 CERAMIC CHIP 2PF 50V
C45 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C101 1-164-161-11 CERAMIC CHIP 0.0022uF 10% 100V
C102 1-128-111-11 ELECT 100uF 20% 25V
C104 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
IC2 8-752-037-02 IC CXA1019S
IC101 8-759-448-77 IC RN5RY202A-TL
IC201 8-759-680-16 IC uPD62MC-744-5A4
IC202 8-759-523-03 IC TC74HC4066AFT(EL)
IC204 8-759-198-63 IC S-81230SG-QB-T1
IC205 8-759-273-87 IC NJM2901V(TE2)
< IC >
< JUMPER RESISTOR >
C105 1-128-111-11 ELECT 100uF 20% 25V
C106 1-164-346-11 CERAMIC CHIP 1uF 16V
C107 1-128-111-11 ELECT 100uF 20% 25V
C201 1-124-584-00 ELECT 100uF 20% 10V
C202 1-164-346-11 CERAMIC CHIP 1uF 16V
C203 1-163-239-11 CERAMIC CHIP 33PF 5% 50V
C204 1-163-237-11 CERAMIC CHIP 27PF 5% 50V
C205 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C206 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C207 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C208 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
< 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
< CONNECTOR >
CN201 1-580-188-11 SOCKET, CONNECTOR 9P
< TRIMMER >
CT1 1-141-354-21 CAP, TRIMMER 10PF
CT2 1-141-320-11 CAP, TRIMMER 45PF
CT3 1-141-354-21 CAP, TRIMMER 10PF
CT5 1-141-354-21 CAP, TRIMMER 10PF
CT6 1-141-320-11 CAP, TRIMMER 45PF
CT7 1-141-304-21 CAP, TRIMMER 10PF
CT8 1-141-299-11 CAP, CERAMIC TRIMMER 5PF
JC1 1-216-296-00 SHORT 0
JC2 1-216-296-00 SHORT 0
JC3 1-216-296-00 SHORT 0
JC4 1-216-296-00 SHORT 0
JC5 1-216-295-00 SHORT 0
JC6 1-216-295-00 SHORT 0
JC7 1-216-296-00 SHORT 0
JC8 1-216-295-00 SHORT 0
JC9 1-216-296-00 SHORT 0
JC11 1-216-296-00 SHORT 0
JC12 1-216-296-00 SHORT 0
JC13 1-216-296-00 SHORT 0
JC14 1-216-295-00 SHORT 0
JC15 1-216-296-00 SHORT 0
JC16 1-216-295-00 SHORT 0
JC17 1-216-296-00 SHORT 0
JC18 1-216-295-00 SHORT 0
JC19 1-216-295-00 SHORT 0
JC20 1-216-296-00 SHORT 0
JC21 1-216-295-00 SHORT 0
JC22 1-216-296-00 SHORT 0
JC24 1-216-295-00 SHORT 0
JC25 1-216-296-00 SHORT 0
JC26 1-216-296-00 SHORT 0
JC27 1-216-295-00 SHORT 0
JC28 1-216-295-00 SHORT 0
JC29 1-216-296-00 SHORT 0
JC30 1-216-296-00 SHORT 0
JC31 1-216-296-00 SHORT 0
JC32 1-216-296-00 SHORT 0
< VARIABLE CAPACITOR >
CV1 1-151-679-11 CAP, VAR (TUNING)
CT4 1-151-679-11 CAP, VAR (TUNING)
< DIODE >
D1 8-719-800-76 DIODE 1SS226
D2 8-713-100-11 DIODE 1T362
D3 8-713-100-11 DIODE 1T362
D5 8-719-988-61 DIODE 1SS355TE-17
D101 8-719-988-61 DIODE 1SS355TE-17
D201 8-719-988-61 DIODE 1SS355TE-17
D202 8-719-988-61 DIODE 1SS355TE-17
D203 8-719-988-61 DIODE 1SS355TE-17
JC33 1-216-296-00 SHORT 0
JC34 1-216-296-00 SHORT 0
JC36 1-216-296-00 SHORT 0
JC37 1-216-296-00 SHORT 0
JC38 1-216-296-00 SHORT 0
< COIL >
L1 1-410-981-22 INDUCTOR CHIP 0.1uH
L2 1-754-133-11 ANTENNA, FERRITE-ROD (MW/LW)
L3 1-402-538-11 COIL, SW (ANT)
L4 1-410-997-22 INDUCTOR CHIP 2.2uH
L5 1-406-092-11 COIL, OSC (MW)
L6 1-406-413-11 COIL, SW (OSC)
– 20 –
Page 15
MAIN
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
L8 1-419-767-11 COIL, AIR-CORE
L9 1-428-290-11 COIL, AIR-CORE
L10 1-428-229-11 COIL, AIR-CORE
L101 1-410-335-11 INDUCTOR 150uH
L102 1-412-006-31 INDUCTOR CHIP 10uH
R208 1-216-081-00 METAL CHIP 22K 5% 1/10W
R209 1-216-025-11 RES-CHIP 100 5% 1/10W
R210 1-216-067-00 METAL CHIP 5.6K 5% 1/10W
R211 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R212 1-216-001-00 METAL CHIP 10 5% 1/10W
POWER
< TRANSISTOR >
Q1 8-729-102-07 TRANSISTOR 2SC2223-F13
Q2 8-729-216-22 TRANSISTOR 2SA1162-G
Q3 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q4 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q5 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q6 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q7 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q8 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q9 8-729-027-38 TRANSISTOR DTA144EKA-T146
Q101 8-729-800-71 TRANSISTOR 2SB815B7-TB
Q102 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q103 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q201 8-729-027-60 TRANSISTOR DTC144TKA-T146
Q202 8-729-027-39 TRANSISTOR DTA144TKA-T146
Q203 8-729-027-39 TRANSISTOR DTA144TKA-T146
< RESISTOR >
R1 1-216-065-11 RES-CHIP 4.7K 5% 1/10W
R2 1-216-091-00 METAL CHIP 56K 5% 1/10W
R3 1-216-097-11 RES-CHIP 100K 5% 1/10W
R4 1-216-097-11 RES-CHIP 100K 5% 1/10W
R6 1-216-049-11 RES-CHIP 1K 5% 1/10W
R8 1-216-097-11 RES-CHIP 100K 5% 1/10W
R9 1-216-097-11 RES-CHIP 100K 5% 1/10W
R11 1-216-089-11 RES-CHIP 47K 5% 1/10W
R13 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R14 1-216-089-11 RES-CHIP 47K 5% 1/10W
R213 1-216-097-11 RES-CHIP 100K 5% 1/10W
R214 1-216-025-11 RES-CHIP 100 5% 1/10W
R215 1-216-097-11 RES-CHIP 100K 5% 1/10W
R216 1-216-081-00 METAL CHIP 22K 5% 1/10W
< VARIABLE RESISTOR >
RV1 1-225-498-11 RES, VAR, CARBON 50K (VOL)
RV2 1-225-499-11 RES, VAR, CARBON 10K (TONE)
RV201 1-241-767-21 RES, ADJ, CARBON 100K
RV202 1-223-621-11 RES, VAR, CARBON 100K (FM TUNING)
RV205 1-241-377-11 RES, VAR, CARBON 100K (FM1)
RV206 1-241-377-11 RES, VAR, CARBON 100K (FM2)
RV208 1-241-377-11 RES, VAR, CARBON 100K (FM3)
< SWITCH >
S1 1-571-172-11 SWITCH, SLIDE (BAND)
< TRANSFORMER >
T1 1-404-902-11 TRANSFORMER, IF
< VIBRATOR >
X201 1-579-452-11 OSCILLATOR, CERAMIC (3.68MHz)
*************************************************************
* 1-677-386-11 POWER BOARD
*************
< AC INLET >
R17 1-216-049-11 RES-CHIP 1K 5% 1/10W
R18 1-216-049-11 RES-CHIP 1K 5% 1/10W
R20 1-216-097-11 RES-CHIP 100K 5% 1/10W
R23 1-216-073-00 METAL CHIP 10K 5% 1/10W
R25 1-216-073-00 METAL CHIP 10K 5% 1/10W
R26 1-247-879-11 CARBON 100K 5% 1/4W
R101 1-216-298-00 METAL CHIP 2.2 5% 1/10W
R102 1-216-073-00 METAL CHIP 10K 5% 1/10W
R103 1-216-033-00 METAL CHIP 220 5% 1/10W
R104 1-216-073-00 METAL CHIP 10K 5% 1/10W
R105 1-216-089-11 RES-CHIP 47K 5% 1/10W
R106 1-216-097-11 RES-CHIP 100K 5% 1/10W
R107 1-216-025-11 RES-CHIP 100 5% 1/10W
R201 1-216-049-11 RES-CHIP 1K 5% 1/10W
R202 1-216-121-11 RES-CHIP 1M 5% 1/10W
R203 1-216-121-11 RES-CHIP 1M 5% 1/10W
R204 1-216-121-11 RES-CHIP 1M 5% 1/10W
R205 1-216-121-11 RES-CHIP 1M 5% 1/10W
R206 1-216-097-11 RES-CHIP 100K 5% 1/10W
R207 1-216-105-11 RES-CHIP 220K 5% 1/10W
0 ACJ1 1-526-838-11 INLET, AC 2P (- AC IN)
< CAPACITOR >
C401 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V
C402 1-126-927-11 ELECT 2200uF 20% 10V
C403 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C404 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C406 1-126-925-11 ELECT 470uF 20% 10V
< CONNECTOR >
* CN401 1-568-272-11 SOCKET, CONNECTOR 6P
< DIODE >
D401 8-719-031-85 DIODE 1N4002L
D402 8-719-031-85 DIODE 1N4002L
< JACK >
EPJ1 1-563-836-21 JACK (v)
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
– 21 –
Page 16
ICF-903L
POWER
Ref. No. Part No. Description Remark
< JUMPER RESISTOR >
JC402 1-216-296-00 SHORT 0
< COIL >
L401 1-410-294-11 INDUCTOR 38uH
< RESISTOR >
R401 1-216-017-11 RES-CHIP 47 5% 1/10W
R402 1-216-049-11 RES-CHIP 1K 5% 1/10W
< SWITCH >
S401 1-571-042-11 SWITCH, PUSH (1 KEY) (OPERATION)
*************************************************************
MISCELLANEOUS
***************
ANT1 1-501-222-71 ANTENNA, TELESCOPIC (FM/SW)
SP1 1-529-676-11 SPEAKER (10.2cm)
0 T401 1-435-513-11 TRANSFORMER, POWER
*************************************************************
ACCESSORIES & PACKING MATERIALS
********************************
0 1-696-562-11 CORD, POWER (AEP)
0 1-751-115-11 CORD, POWER (UK)
3-046-206-11 MANUAL, INSTRUCTION (ENGLISH,FRENCH,
GERMAN,SPANISH,ITALIAN,DUTCH,
SWEDISH,PORTUGUESE,FINNISH,DANISH)
9-927-913-11
Sony Corporation
Audio Entertainment Group
– 22 –
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
2000D0444-1
Printed in Japan C2000. 4
Published by PE General Engineering Dept.
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