Sony ICF-C255RC - Auto Time Set Clock Radio User manual

ICF-C255RC
AEP Model SERVICE MANUAL
FM/MW/LW RADIO CONTROLLED CLOCK RADIO
SPECIFICATIONS
Ver 1.0 2000. 05

— 2 —
SECTION 1
GENERAL
This section is extracted
from instruction manual.
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder 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, show obvious 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 —

—4 —
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
•The equipment can be removed using the following procedure.
Key board
Ferrite rod antenna board
Cabinet (upper)Set Main board Power boar
d
2-1. CABINET (UPPER)
S
4 Cabinet (upper)
6 Speaker
2 Two claws
7 Box assy, ANT
connector
8 Box assy, ANT
5 Remove the two solderings.
3
1 Five screws (M3 ×14)
Precaution when attaching
the cabinet (upper).
Align the button (alarm) with
knob of the dial (alarm) assembly
to attach it.

—5 —
2-2. KEY BOARD
1 Two claws
5 Two claws
2 Two claws
6 Chassi
s
4 Key board
3 Connector (CN200)
7 Cabinet (lower)
2-3. MAIN BOARD
8 Main board
6 LED board
3 Alarm dial board
4 Claw
7 Connector (CN150)
5 Connector (CN2)
1 Connector (CN201)
2 Two screws (BTP 2 ×8)

—6 —
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
2-5. FERRITE ROD ANTENNA BOARD
S
Set the Antenna cord as illustrated below,
then install the antenna box (upper).
4 Box (upper), antenna
2 Two claws
Box (upper), antenna
Box (upper), antenna
3 Box (lower),
antenna
5 Ferrite-rod
antenna board
Ferrite-rod antenna board
Antenna cord
1 Three screws (B1.7 ×8)
Antenna cord setting
(BOX ASSY, ANT)

SECTION 3
ELECTRICAL ADJUSTMENTS
[FM]
Setting:
BAND switch: FM
[MW/LW]
Setting:
BAND switch: MW/LW
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 MHz
AM IF ADJUSTMENT
Adjust for a VT VOLTAGE 2.65 ± 0.1V on volt meter.
T1
5450 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a VT VOLTAGE 2.25 ± 0.05V on volt meter.
L1
531 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4-1 CT1
621 kHz 1,404 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
CT4
153 kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4-2 CT2
162 kHz 243 kHz
• Adjusting Location: MAIN board (Component Side)
— 7 — — 8 —
T1 AM IF adjustment
FM TRACKING adjustment
L1 MW FREQUENCY COVERAGE
adjustment
CT1 MW TARCKING adjustment
CT3
L3
L4-2 LW TRACKING adjustment
L4-1 MW TRACKING adjustment
CT2 LW TARCKING adjustment
CT4 LW FREQUENCY COVERAGE
adjustment
2-6. POWER CORD AND ANTENNA CORD SETTING
Power board
Main board
Set the power cord and the antenna cord
as illustrated below,
then install the cabinet (lower).
Power cord
Power cord
Antenna cord
Antenna cord
Cabinet (lower)
+
–
FM RF signal generator
22.5 kHz frequency
deviation by 400 Hz
signal FM lead wire antenna terminal
speaker terminal
0.01 µFset
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 meter

ICF-C255RC
—9 ——10 —
4-1. PRINTED WIRING BOARDS
Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•b: Pattern from the side which enables seeing.
Ref. No. Location
D1 D-9
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
Q1 D-9
Q2 C-7
Q3 B-8
Q4 B-8
Q5 D-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
SECTION 4
DIAGRAMS
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-
12
(12)
1-674-952- 11
(11)
C30
C9
C19
C24
C10
C16
R16
JC13
R1
R2 C2
C26
C117
R18
R28 R27
JC11
Q4
C25
C108
C156
C157
C158
E
E
E
E
CF1
CF2
CF3
X100
15
28
114
1
1
1
5
4
18
41
32
FERRITE-ROD ANTENNA BOARD
FERRITE
ROD
ANTENNA
BPF1
VR1
FM
ANTENNA
VOL
CT1
CT3
CT4
CT2
C8
T1
L3
L1
L4
AM FERRITE-ROD
ANTENNA
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
G
345678910
TO
ALARM
DIAL
16
TIME
TIME
TUNING
D5-D8
BACK LIGHT
JC153
JC119
JC120
JC158
JC144
JC143
JC159
JC160
C120
C120
JC155
JC154
JC156
JC157
R123
R151
C159
R26
R25
R153
R22
R21
R120
R101
R17
CN202
Q1
D1
Q5
JC112
JC161
C459 R456
L451
JC162
JC102
X451
4
2
1
3
20
1110
1
R459
C460 C456
C457
R458
R460
R461
C451
C454
C455
IC451
R453
PS150

ICF-C255RC
—11 ——12 —
4-2. SCHEMATIC DIAGRAM
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
( ) : MW/LW
∗: Impossible to measure
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Signal path.
F: FM
f: MW/LW
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

— 15 —
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
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.
• -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.
1-674-952-11 FERRITE-ROD ANTENNA BOARD
**************************
< CAPACITOR >
C451 1-109-982-11 CERAMIC CHIP 1uF 10.00% 10V
C454 1-163-227-11 CERAMIC CHIP 10PF 0.50PF 50V
C455 1-163-019-00 CERAMIC CHIP 0.0068uF 10% 50V
C456 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V
C457 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C459 1-136-682-11 FILM 0.0039uF 5.00% 100V
C460 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
< IC >
IC451 8-759-599-59 IC U4226B-MFSG3
< COIL >
L401 1-754-082-11 ANTENNA, FERRITE-ROD (LW)
< RESISTOR >
R453 1-216-295-91 SHORT 0
R456 1-216-295-91 SHORT 0
R458 1-216-295-91 SHORT 0
R459 1-216-295-91 SHORT 0
R460 1-216-097-91 RES-CHIP 100K 5% 1/10W
R461 1-216-121-91 RES-CHIP 1M 5% 1/10W
< VIBRATOR >
X451 1-767-219-11 FILTER, CRYSTAL
*************************************************************
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-3663-591-A MAIN BOARD, COMPLETE
*********************
< FILTER >
BPF1 1-236-022-11 FILTER, BAND PASS
< CAPACITOR >
C1 1-163-253-11 CERAMIC CHIP 120PF 5.00% 50V
C2 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C3 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C4 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C5 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 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 20.00% 50V
C9 1-126-963-11 ELECT 4.7uF 20.00% 50V
C10 1-126-964-11 ELECT 10uF 20.00% 50V
C11 1-163-085-00 CERAMIC CHIP 2PF 50V
C13 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C14 1-163-809-11 CERAMIC CHIP 0.047uF 10% 25V
C15 1-164-489-11 CERAMIC CHIP 0.22uF 10.00% 16V
C16 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V
C17 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C18 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C19 1-128-551-11 ELECT 22uF 20.00% 25V
C20 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C21 1-163-231-11 CERAMIC CHIP 15PF 5.00% 50V
MAIN
FERRITE-ROD ANTENNA
KEY LED

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
—16 —
C23 1-163-132-00 CERAMIC CHIP 430PF 5.00% 50V
C24 1-126-960-11 ELECT 1uF 20.00% 50V
C25 1-126-934-11 ELECT 220uF 20.00% 10V
C26 1-163-263-11 CERAMIC CHIP 330PF 5.00% 50V
C27 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C28 1-109-982-11 CERAMIC CHIP 1uF 10.00% 10V
C29 1-109-982-11 CERAMIC CHIP 1uF 10.00% 10V
C30 1-126-934-11 ELECT 220uF 20.00% 10V
C31 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C32 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C33 1-110-501-11 CERAMIC CHIP 0.33uF 10.00% 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 10.00% 50V
C38 1-163-259-91 CERAMIC CHIP 220PF 5.00% 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 20.00% 6.3V
C109 1-163-038-00 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 5.00% 50V
C113 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C114 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C115 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C116 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C117 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C118 1-163-022-00 CERAMIC CHIP 0.012uF 10% 50V
C119 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C120 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C151 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C152 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C153 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C154 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C155 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C156 1-126-927-11 ELECT 2200uF 20.00% 10V
C157 1-104-666-11 ELECT 220uF 20.00% 25V
C158 1-126-934-11 ELECT 220uF 20.00% 10V
C159 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
< FILTER >
CF1 1-578-677-21 FILTER, CRYSTAL 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
*CN202 1-564-706-11 PIN, CONNECTOR (SMALL TYPE) 4P
< TRIMMER >
CT1 1-141-601-21 CAP, ADJ
CT2 1-141-605-11 CAP, ADJ
CT3 1-141-601-21 CAP, ADJ
CT4 1-141-605-11 CAP, ADJ
< DIODE >
D1 8-719-023-99 DIODE KV1563MTL-2,3
D2 8-713-100-11 DIODE 1T362-04-T8A
D3 8-713-100-11 DIODE 1T362-04-T8A
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 UDZ-TE-17-5.1B
< IC >
IC1 8-752-050-16 IC CXA1019M-T6
IC100 8-759-662-01 IC uPD17073GB-557-1A7
< 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
JC8 1-216-296-91 SHORT 0
JC9 1-216-296-91 SHORT 0
JC11 1-216-296-91 SHORT 0
JC12 1-216-296-91 SHORT 0
JC13 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
JC102 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
JC112 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
MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
—17 —
JC117 1-216-296-91 SHORT 0
JC119 1-216-296-91 SHORT 0
JC120 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
JC143 1-216-296-91 SHORT 0
JC144 1-216-296-91 SHORT 0
JC151 1-216-296-91 SHORT 0
JC153 1-216-296-91 SHORT 0
JC154 1-216-296-91 SHORT 0
JC155 1-216-296-91 SHORT 0
JC156 1-216-296-91 SHORT 0
JC157 1-216-296-91 SHORT 0
JC158 1-216-296-91 SHORT 0
JC159 1-216-296-91 SHORT 0
JC160 1-216-296-91 SHORT 0
JC161 1-216-296-91 SHORT 0
JC162 1-216-296-91 SHORT 0
JC301 1-216-296-91 SHORT 0
< COIL >
L1 1-406-485-11 COIL (OSC)
L2 1-414-690-11 INDUCTOR 82nH
L3 1-406-545-11 COIL, AIR-CORE
L4 1-501-715-11 ANTENNA, FERRITE-ROD (LW/MW)
< LIQUID CRYSTAL DISPLAY >
LCD100 1-803-947-11 DISPLAY PANEL, LIQUID CRYSTAL
< IC LINK >
PS150 1-533-588-11 LINK, IC
< TRANSISTOR >
Q1 8-729-102-07 TRANSISTOR 2SC2223-T1F13
Q2 8-729-102-07 TRANSISTOR 2SC2223-T1F13
Q3 1-801-806-11 TRANSISTOR DTC144EKA-T146
Q4 8-729-120-28 TRANSISTOR 2SC1623-T1L6
Q5 8-729-102-07 TRANSISTOR 2SC2223-T1F13
Q6 8-729-216-22 TRANSISTOR 2SA812-T1-M5M6
Q7 8-729-120-28 TRANSISTOR 2SC1623-T1L6
Q8 8-729-120-28 TRANSISTOR 2SC1623-T1L6
Q9 8-729-120-28 TRANSISTOR 2SC1623-T1L6
Q10 8-729-120-28 TRANSISTOR 2SC1623-T1L6
Q100 8-729-216-22 TRANSISTOR 2SA812-T1-M5M6
Q101 1-801-806-11 TRANSISTOR DTC144EKA-T146
Q151 8-729-840-00 TRANSISTOR 2SD400E-MP-AE
< RESISTOR >
R1 1-216-133-00 METAL CHIP 3.3M 5% 1/10W
R2 1-216-073-00 METAL CHIP 10K 5% 1/10W
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 1-216-017-91 RES-CHIP 47 5% 1/10W
R16 1-216-081-00 METAL CHIP 22K 5% 1/10W
R17 1-216-037-00 METAL CHIP 330 5% 1/10W
R18 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R19 1-216-073-00 METAL CHIP 10K 5% 1/10W
R20 1-216-105-91 RES-CHIP 220K 5% 1/10W
R21 1-216-073-00 METAL CHIP 10K 5% 1/10W
R22 1-216-097-91 RES-CHIP 100K 5% 1/10W
R23 1-216-073-00 METAL CHIP 10K 5% 1/10W
R24 1-216-029-00 METAL CHIP 150 5% 1/10W
R25 1-216-033-00 METAL CHIP 220 5% 1/10W
R26 1-216-033-00 METAL CHIP 220 5% 1/10W
R27 1-216-033-00 METAL CHIP 220 5% 1/10W
R28 1-216-033-00 METAL CHIP 220 5% 1/10W
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 1-216-057-00 METAL CHIP 2.2K 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 1-216-089-91 RES-CHIP 47K 5% 1/10W
R123 1-216-049-91 RES-CHIP 1K 5% 1/10W
R151 1-216-049-91 RES-CHIP 1K 5% 1/10W
R152 1-216-041-00 METAL CHIP 470 5% 1/10W
R153 1-216-105-91 RES-CHIP 220K 5% 1/10W
< SWITCH >
S1 1-692-181-31 SWITCH, SLIDE (BRIGHTNESS)
MAIN

—18 —
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
ICF-C255RC
Sony Corporation
Audio Entertainment Group 2000E1636-1
Printed in Japan ©2000.5
Published by PE General Engineering Dept.
9-927-908-31
< TRANSFORMER >
T1 1-404-790-11 TRANSFORMER, IF
< VARIABLE RESISTOR >
VR1 1-228-790-00 RES, VAR, CARBON 50K (VOL)
< 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, KEYBOARD
*20 1-535-771-11 TERMINAL
25 1-674-952-11 FERRITE-ROD ANTENNA BOARD
SP1 1-504-748-21 SPEAKER (6.6cm)
0P150 1-555-795-00 CORD, POWER
**************************************************************
ACCESSORIES & PACKING MATERIALS
*******************************
3-046-171-11 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.
POWER
MAIN