Sony ICF-C253 User manual

ICF-C253
Australian Model SERVICE MANUAL
FM/AM PLL SYNTHESIZED CLOCK RADIO
SPECIFICATIONS
Ver 1.0 2000. 04

— 2 —
SECTION 1
GENERAL This section is extracted
from instruction manual.
1. Check theareaofyourrepair for unsolderedor poorly-soldered
connections. Checkthe entire boardsurface forsolder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look for parts which, through functioning, showobvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
5. Check the B+ voltage to see it is at the values specified.
6. Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.

— 3 —
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
•The equipment can be removed using the following procedure.
Key board
Cabinet (upper)Set Main board Power boar
d
2-1. CABINET (UPPER)
2 Cabinet (upper)
4 Speaker
3 Remove the two solderings.
1
1 Five screws (M3 × 14)

— 4 —
2-2. KEY BOARD
1 Two claws
5 Two claws
2 Two claws
6 Chassi
s
4 Key board
3 Remove the eight solderings.
7 Cabinet (lower)
2-3. MAIN BOARD
8 Main board
6 LED board
3 Alarm dial board
4 Claw
7 Remove the four solderings.
5 Remove the four solderings.
1 Remove the
five solderings.
2 Two screws (BTP 2 × 8)

SECTION 3
ELECTRICAL ADJUSTMENTS
[FM]
Setting:
BAND switch: FM
[AM]
Setting:
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.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT3
87.5 MHz 108 Hz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
531 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 CT1
621 kHz 1,404 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
• Adjusting Location: MAIN board (Component Side)
+
–
FM RF signal generator
22.5 kHz frequency
deviation by 400 Hz
signal FM lead wire antenna terminal
speaker terminal
0.01
µ Fset
level meter
+
–
AM RF SSG
Put the lead-wire
antenna close to
the set.
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
set
speaker terminal
level mete
r
2-4. POWER BOARD
7 Power board
2 Terminal
4 Power cord
3 Remove the
two solderings.
5 Remove the
six solderings.
6 Transformer
power
1
— 5 — — 6 —
T1 AM IF adjustment
FM TRACKING adjustment
L1 AM FREQUENCY COVERAGE
adjustment
AM TARCKING adjustment
CT3
L3
CT1
L4
2-5. POWER CORD SETTING
FM antenna
Power board
Set the power cord as illustrated below,
then install the lower cabinet.
power cord
lower cabinet

ICF-C253
— 7 — — 8 —
SECTION 4
DIAGRAMS
4-1. PRINTED WIRING BOARDS
Note on PrintedWiring Boards:
•X: parts extracted from the component side.
•b: Pattern from the side which enables seeing.
KEY BOARD
POWER BOARD
LED BOARD
MAIN BOARD
1-676
-852-
1-676-851- 11
(11)
11
(11)
1-676-850-
11
(11)
1-676-849-
11
(11)
AA
C30 C9
C19
C24
C10
C25
C108
C156
C157
C158
E
CF1
CF2
CF3
X100
1528
114
1
1
1
5
4
18
32
FM
ANTENNA
BPF1
VR1
VOL
CT1
CT3
C8
T1
L3
L1
L4
AM FERRITE-ROD
ANTENNA
K
K
E
D5
D100
D155
D154
D152
D153
D101
D151
D6D7D8
D9
D10
Q151
W200
W151
EE
E
E
1
1415
28
29
42 43
56
LCD100 (LIQUID CRYSTAL DISPLAY)
E
CN150
13
CN2
13 W2
14 W150
CN201
E
E
HI
LOW
S1 BRIGHTNESS
H
L
18
CN200
B
A
ALARM
MODE
T150
POWER
TRANSFORMER
P150
AC IN
S213
CLOCK
S210
DST
S209
M5 S208 M4
S204
ON
S202
OFF
S207
M3 S206 M2 S205
M1
S200 S201
S203
BAND
S211
SNOOZE
S212
A-RESET
S214
S215
SP1
(SPEAKER)
12
A
B
C
D
E
F
345678910
TO
ALARM
DIAL
16
TIME
TIME
TUNING
D5-D8
BACK LIGHT
Ref. No. Location
D5 E-8
D6 E-7
D7 E-6
D8 E-5
D9 E-3
D10 E-3
D100 D-5
D101 D-5
D151 D-4
D152 D-4
D153 D-4
D154 C-4
D155 C-4
D156
IC1 C-8
IC100 E-6
Q2 C-7
Q3 B-8
Q6 E-9
Q7 D-6
Q8 D-6
Q9 E-4
Q10 E-4
Q100 E-5
Q101 E-5
Q151 C-6
• Semiconductor
Location

ICF-C253
— 9 — — 10 —
4-2. SCHEMATIC DIAGRAM
C116
0.1
TO ALARM DIAL
TUNING
TUNING
Note on Schematic Diagram:
• 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 Ωand 1/4W 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
( ) : AM
∗: Impossible to measure
• Voltagesaretakenwith aVOM (Input impedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F: FM
f: AM
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replace only with part number specified.
•Waveform
2Vp-p
1 IC100 wf (XOUT)
1V/div
14µsec 10µsec/div

— 11 — — 12 —
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
SECTION 5
EXPLODED VIEWS
1 3-045-666-11 CABINET (UPPER)
2 3-045-669-01 KNOB(ALARM)
3 3-045-670-11 BUTTON (ALARM)
4 3-045-668-11 BUTTON (MAIN)
5 7-685-647-79 SCREW+P 3X10 TYPE2 NON-SLIT
6 3-045-675-01 PANEL, FRONT
7 X-3378-799-1 PANELASSY, FRONT
8 3-049-387-01 SHEET(WINDOW), ADHESIVE
9 3-045-677-01 WINDOW (LED)
10 3-045-672-01 CHASSIS
*11 A-3683-190-A MAIN BOARD, COMPLETE
12 3-933-547-01 SHEET (BAND)
13 3-919-268-01 KNOB(VOL)
14 3-045-667-11 CABINET (LOWER)
15 3-368-852-01 FOOT
16 7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
17 3-371-765-21 SCREW (2X8), +BTP
18 1-553-856-00 SWITCH, KEYBOARD
*19 1-676-851-11 POWER BOARD
*20 1-535-771-11 TERMINAL
21 A-3638-829-A DIAL (ALARM) ASSY
22 1-676-850-11 KEY BOARD
23 1-676-852-11 LED BOARD
SP1 1-504-748-21 SPEAKER (6.6cm)
0P150 1-790-431-11 CORD, POWER
0T150 1-435-504-11 TRANSFORMER, POWER
4-3. IC PIN FUNCTION DESCRIPTION
• IC100 LCD CONTROL (µPD17072GB-019-1A7)
Pin No.
1
2
3
4
5
6 to 9
10 to 13
14
15 to 17
18
19
20
21
22
23
24
25
26
27
28, 29
30
31 to 34
35 to 47
48, 49
50
51
52
53
54 to 56
I/O
O
O
O
O
O
O
I
I
Ι
−
O
I
I
−
−
O
I
−
−
−
−
O
O
O
I
I
O
O
I
Description
Initialization output.
Mute output.
Band output.
ALARM A indicator.
ALARM B indicator.
Key strove signal.
Key return signal.
ALARM-TIME input.
DIAL signal.
Ground.
PLL error output.
LW/MW VCO input.
FM VCO input.
Regulator.
VDD
System clock output.
System clock input.
Regulator.
LCD bubbler.
LCD drive. Common signal.
LCD drive. Segment signal.
Not used.
Power failure detection.
Not used.
Buzzer output.
Band output.
Initialization input.
Pin Name
INT OUT
MUTE
BAND1
ALARM A
ALARM B
KS0 to KS3
XR0 to XR3
P0
P1 to P3
GND
E0
VCOL
VCOH
Vreg0
VDD
Xout
Xin
Vreg1
VLCD0
CAP0, CAP1
VLCD1
COM0 to COM3
LCD0 to LCD12
LCD13, LCD14
CE
INT
BEEP
BAND2
INIT IN
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshouldbeanticipatedwhenorderingthese
items.
• Themechanical parts with no reference number
in the exploded views are not supplied.
• Accessories and packing materials are given in
the last of this parts list.
The components identified by mark 0or
dotted line with mark 0are critical for safety.
Replace only with part number specified.
1
not supplied
P150
T150
2
3
4
5
67
10
22
11 12
13
14
15
16 16
8
19
20
9
18
17
SP1
23
21

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
— 13 —
SECTION 6
ELECTRICAL PARTS LIST
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts
specifiedin thediagrams or the components
used on the set.
• -XX, -X mean standardized parts, so they
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.
• CAPACITORS:
uF: µF
• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
• COILS
uH: µH The components identified by mark 0or
dotted line with mark 0are critical for safety.
Replace only with part number specified.
• SEMICONDUCTORS
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.
1-676-850-11 KEY BOARD
*********
< CONNECTOR >
*CN200 1-580-187-11 SOCKET, CONNECTOR 8P
< JUMPER >
JC200 1-216-296-91 SHORT 0
< SWITCH >
S200 1-692-014-11 SWITCH, KEY BOARD (+)
S201 1-692-014-11 SWITCH, KEY BOARD (-)
S202 1-692-014-11 SWITCH, KEY BOARD (OFF)
S203 1-692-014-11 SWITCH, KEY BOARD (BAND)
S204 1-692-014-11 SWITCH, KEY BOARD (ON)
S205 1-692-014-11 SWITCH, KEY BOARD (M1)
S206 1-692-014-11 SWITCH, KEY BOARD (M2)
S207 1-692-014-11 SWITCH, KEY BOARD (M3)
S208 1-692-014-11 SWITCH, KEY BOARD (M4)
S209 1-692-014-11 SWITCH, KEY BOARD (M5)
S210 1-692-014-11 SWITCH, KEY BOARD (D.S.T)
S211 1-692-014-11 SWITCH, KEY BOARD (SNOOZE)
S212 1-692-014-11 SWITCH, KEY BOARD (A-RESET)
S213 1-692-014-11 SWITCH, KEY BOARD (CLOCK)
S214 1-692-014-11 SWITCH, KEY BOARD (TIME +)
S215 1-692-014-11 SWITCH, KEY BOARD (TIME -)
************************************************************
1-676-852-11 LED BOARD
*********
< DIODE >
D9 8-719-079-31 LED SLI-342YCT32-RS (B)
D10 8-719-079-31 LED SLI-342YCT32-RS (A)
************************************************************
*A-3683-190-A MAIN BOARD, COMPLETE
*********************
< FILTER >
BPF1 1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C3 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
C4 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C5 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C6 1-163-227-11 CERAMIC CHIP 10PF 0.50PF 50V
C7 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C8 1-126-964-11 ELECT 10uF 20% 50V
C9 1-126-963-11 ELECT 4.7uF 20% 50V
C10 1-126-964-11 ELECT 10uF 20% 50V
C11 1-163-085-00 CERAMIC CHIP 2PF 50V
C13 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C14 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C15 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V
C17 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C18 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C19 1-128-551-11 ELECT 22uF 20% 25V
C20 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C21 1-163-231-11 CERAMIC CHIP 15PF 5% 50V
C23 1-163-132-00 CERAMIC CHIP 430PF 5% 50V
C24 1-126-960-11 ELECT 1uF 20% 50V
C25 1-126-934-11 ELECT 220uF 20% 10V
C27 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C28 1-109-982-11 CERAMIC CHIP 1uF 10% 10V
C29 1-109-982-11 CERAMIC CHIP 1uF 10% 10V
C30 1-126-934-11 ELECT 220uF 20% 10V
C31 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C32 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C33 1-110-501-11 CERAMIC CHIP 0.33uF 10% 16V
C34 1-163-125-00 CERAMIC CHIP 220PF 5% 50V
C35 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C37 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C38 1-163-259-91 CERAMIC CHIP 220PF 5% 50V
C39 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C100 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C101 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C102 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C103 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C104 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C105 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C106 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C107 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C108 1-126-916-11 ELECT 1000uF 20% 6.3V
C109 1-163-038-91 CERAMIC CHIP 0.1uF 25V
C110 1-164-346-11 CERAMIC CHIP 1uF 16V
C111 1-163-108-00 CERAMIC CHIP 43PF 5% 50V
C112 1-163-233-11 CERAMIC CHIP 18PF 5% 50V
C113 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C114 1-163-038-91 CERAMIC CHIP 0.1uF 25V
C115 1-163-038-91 CERAMIC CHIP 0.1uF 25V
C116 1-163-038-91 CERAMIC CHIP 0.1uF 25V
C118 1-163-022-00 CERAMIC CHIP 0.012uF 10% 50V
LED MAIN KEY

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
— 14 —
C119 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C151 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C152 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C153 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C154 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C155 1-163-021-91 CERAMIC CHIP 0.01uF 10% 50V
C156 1-126-927-11 ELECT 2200uF 20% 10V
C157 1-104-666-11 ELECT 220uF 20% 25V
C158 1-126-934-11 ELECT 220uF 20% 10V
< FILTER >
*CF1 1-577-319-11 FILTER, CERAMIC 450kHz
CF2 1-579-632-41 FILTER, CERAMIC 10.7MHz
CF3 1-579-632-41 FILTER, CERAMIC 10.7MHz
< CONNECTOR >
CN2 1-568-269-11 SOCKET, CONNECTOR 3P
*CN150 1-568-270-11 SOCKET, CONNECTOR 4P
*CN201 1-568-271-11 SOCKET, CONNECTOR 5P
< TRIMMER >
CT1 1-141-601-21 CAP, ADJ
CT3 1-141-601-21 CAP, ADJ
< DIODE >
D2 8-713-100-12 DIODE 1T362
D3 8-713-100-12 DIODE 1T362
D4 8-719-072-59 DIODE SVC347S-TL
D5 8-719-079-31 LED SLI-342YCT32-RS (BACK LIGHT)
D6 8-719-079-31 LED SLI-342YCT32-RS (BACK LIGHT)
D7 8-719-079-31 LED SLI-342YCT32-RS (BACK LIGHT)
D8 8-719-079-31 LED SLI-342YCT32-RS (BACK LIGHT)
D100 8-719-074-44 DIODE 1SS120RX
D101 8-719-074-44 DIODE 1SS120RX
D151 8-719-074-44 DIODE 1SS120RX
D152 8-719-031-85 DIODE 1N4002L
D153 8-719-031-85 DIODE 1N4002L
D154 8-719-031-85 DIODE 1N4002L
D155 8-719-031-85 DIODE 1N4002L
D156 8-719-976-99 DIODE DTZ5.1B
< IC >
IC1 8-752-050-16 IC CXA1019M
IC100 8-759-664-99 IC uPD17072GB-019-1A7
< JUMPER >
JC2 1-216-295-91 SHORT 0
JC3 1-216-296-91 SHORT 0
JC4 1-216-296-91 SHORT 0
JC5 1-216-295-91 SHORT 0
JC6 1-216-295-91 SHORT 0
JC8 1-216-296-91 SHORT 0
JC9 1-216-296-91 SHORT 0
JC10 1-216-295-91 SHORT 0
JC12 1-216-296-91 SHORT 0
JC14 1-216-296-91 SHORT 0
JC15 1-216-296-91 SHORT 0
JC16 1-216-296-91 SHORT 0
JC17 1-216-296-91 SHORT 0
JC18 1-216-296-91 SHORT 0
JC19 1-216-296-91 SHORT 0
JC20 1-216-296-91 SHORT 0
JC21 1-216-296-91 SHORT 0
JC22 1-216-296-91 SHORT 0
JC23 1-216-295-91 SHORT 0
JC24 1-216-295-91 SHORT 0
JC25 1-216-296-91 SHORT 0
JC27 1-216-295-91 SHORT 0
JC100 1-216-295-91 SHORT 0
JC103 1-216-295-91 SHORT 0
JC105 1-216-295-91 SHORT 0
JC107 1-216-295-91 SHORT 0
JC110 1-216-296-91 SHORT 0
JC111 1-216-296-91 SHORT 0
JC114 1-216-296-91 SHORT 0
JC115 1-216-296-91 SHORT 0
JC116 1-216-296-91 SHORT 0
JC117 1-216-296-91 SHORT 0
JC121 1-216-296-91 SHORT 0
JC122 1-216-296-91 SHORT 0
JC123 1-216-296-91 SHORT 0
JC124 1-216-296-91 SHORT 0
JC125 1-216-296-91 SHORT 0
JC126 1-216-296-91 SHORT 0
JC127 1-216-296-91 SHORT 0
JC128 1-216-296-91 SHORT 0
JC129 1-216-296-91 SHORT 0
JC130 1-216-295-91 SHORT 0
JC131 1-216-296-91 SHORT 0
JC132 1-216-295-91 SHORT 0
JC133 1-216-296-91 SHORT 0
JC134 1-216-295-91 SHORT 0
JC135 1-216-296-91 SHORT 0
JC136 1-216-296-91 SHORT 0
JC151 1-216-296-91 SHORT 0
JC301 1-216-296-91 SHORT 0
< COIL >
L1 1-406-485-11 COOL (OSC)
L2 1-414-690-11 INDUCTOR 82nH
L3 1-406-545-11 COIL, AIR-CORE
L4 1-402-616-11 ANTENNA, FERRITE-ROD (MW)
< LIQUID CRYSTAL DISPLAY >
LCD100 1-803-947-11 DISPLAY PANEL, LIQUID CRYSTAL
< IC LINK >
PS150 1-533-588-31 LINK, IC
< TRANSISTOR >
Q2 8-729-102-07 TRANSISTOR 2SC2223-F13
Q3 1-801-806-11 TRANSISTOR DTC144EKA-T146
Q6 8-729-216-22 TRANSISTOR 2SA1162-G
Q7 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q8 8-729-120-28 TRANSISTOR 2SC1623-L5L6
MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
— 15 —
Q9 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q10 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q100 8-729-216-22 TRANSISTOR 2SA1162-G
Q101 1-801-806-11 TRANSISTOR DTC144EKA-T146
Q151 8-729-840-00 TRANSISTOR 2SD400-E
< RESISTOR >
R3 1-216-097-91 RES-CHIP 100K 5% 1/10W
R5 1-216-049-91 RES-CHIP 1K 5% 1/10W
R6 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R7 1-216-037-00 METAL CHIP 330 5% 1/10W
R9 1-216-097-91 RES-CHIP 100K 5% 1/10W
R10 1-216-089-91 RES-CHIP 47K 5% 1/10W
R11 1-216-073-00 METAL CHIP 10K 5% 1/10W
R12 1-216-037-00 METAL CHIP 330 5% 1/10W
R13 1-216-121-91 RES-CHIP 1M 5% 1/10W
R14 1-216-029-00 METAL CHIP 150 5% 1/10W
R17 1-216-186-00 RES-CHIP 330 5% 1/8W
R19 1-216-073-00 METAL CHIP 10K 5% 1/10W
R20 1-216-105-91 RES-CHIP 220K 5% 1/10W
R21 1-216-222-00 RES-CHIP 10K 5% 1/8W
R22 1-216-246-00 RES-CHIP 100K 5% 1/8W
R23 1-216-073-00 METAL CHIP 10K 5% 1/10W
R24 1-216-017-91 RES-CHIP 47 5% 1/10W
R25 1-216-182-00 RES-CHIP 220 5% 1/8W
R26 1-216-182-00 RES-CHIP 220 5% 1/8W
R27 1-216-182-00 RES-CHIP 220 5% 1/8W
R28 1-216-182-00 RES-CHIP 220 5% 1/8W
R29 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R30 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R100 1-216-097-91 RES-CHIP 100K 5% 1/10W
R101 1-216-206-00 RES-CHIP 2.2K 5% 1/8W
R102 1-216-089-91 RES-CHIP 47K 5% 1/10W
R103 1-216-089-91 RES-CHIP 47K 5% 1/10W
R104 1-216-097-91 RES-CHIP 100K 5% 1/10W
R105 1-216-097-91 RES-CHIP 100K 5% 1/10W
R106 1-216-065-91 RES-CHIP 4.7K 5% 1/10W
R107 1-216-065-91 RES-CHIP 4.7K 5% 1/10W
R108 1-216-065-91 RES-CHIP 4.7K 5% 1/10W
R109 1-216-065-91 RES-CHIP 4.7K 5% 1/10W
R110 1-216-073-00 METAL CHIP 10K 5% 1/10W
R111 1-216-001-00 METAL CHIP 10 5% 1/10W
R113 1-216-113-00 METAL CHIP 470K 5% 1/10W
R114 1-216-113-00 METAL CHIP 470K 5% 1/10W
R117 1-216-089-91 RES-CHIP 47K 5% 1/10W
R118 1-216-089-91 RES-CHIP 47K 5% 1/10W
R119 1-216-089-91 RES-CHIP 47K 5% 1/10W
R120 1-216-238-91 RES-CHIP 47K 5% 1/8W
R151 1-216-198-91 RES-CHIP 1K 5% 1/8W
R152 1-216-041-00 METAL CHIP 470 5% 1/10W
R153 1-216-254-00 RES-CHIP 220K 5% 1/8W
< SWITCH >
S1 1-692-181-31 SWITCH, SLIDE (BRIGHTNESS)
< TRANSFORMER >
T1 1-404-790-11 TRANSFORMER, IF
< VARIABLE RESISTOR >
VR1 1-228-790-00 RES, VAR, CARBON 50K (VOL)
< FLAT CABLE >
W1 1-501-907-21 ANTENNA, FM WIRE
< VIBRATOR >
X100 1-767-517-11 VIBRATOR, CRYSTAL 75kHz
************************************************************
*1-676-851-11 POWER BOARD
*************
*1-535-771-11 TERMINAL
< TRANSFORMER >
0T150 1-435-504-11 TRANSFORMER, POWER
************************************************************
MISCELLANEOUS
**************
18 1-553-856-00 SWITCH, KEY BOARD
SP1 1-504-748-21 SPEAKER (6.6cm)
0P150 1-790-431-11 CORD, POWER
************************************************************
ACCESSORIES & PACKING MATERIALS
********************************
3-046-172-11 MANUAL, INSTRUCTION
(ENGLISH, FRENCH, GERMAN, DUTCH)
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replace only with part number specified.
POWERMAIN

ICF-C253
— 16 —
Sony Corporation
Audio Entertainment Group 2000D16053-1
Printed in Japan ©2000.4
Published by PE General Engineering Dept.
9-927-909-11