Sony ICF-C255RC Service manual

ICF-C255RC

SERVICE MANUAL

Ver 1.0 2000. 05

SPECIFICATIONS

AEP Model

FM/MW/LW RADIO CONTROLLED CLOCK RADIO

SECTION 1

GENERAL

This section is extracted
from instruction manual.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.

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.

— 2 —

— 3 —

SECTION 2

d

S

DISASSEMBLY

• The equipment can be removed using the following procedure.

Ferrite rod antenna board

Cabinet (upper) Set

Key board

Note : Follow the disassembly procedure in the numerical order given.

Main board

Power boar

2-1. CABINET (UPPER)

4

Cabinet (upper)

1

Five screws (M3

× 14)

2

Two claws

3

6

Speaker

5

Remove the two solderings.

7

Box assy, ANT

connector

— 4 —

8

Box assy, ANT

Precaution when attaching
the cabinet (upper).

Align the button (alarm) with
knob of the dial (alarm) assembly
to attach it.

2-2. KEY BOARD

s

1

Two claws

5

Two claws

3

Connector (CN200)

4

Key board

2

Two claws

6

Chassi

2-3. MAIN BOARD

6

LED board

7

Cabinet (lower)

5

Connector (CN2)

2

Two screws (BTP 2

3

× 8)

Alarm dial board

1

Connector (CN201)

7

Connector (CN150)

8

Main board

— 5 —

4

Claw

2-4. POWER BOARD

S

6

Transformer
power

2

Terminal

7

Power board

5

1

3

Remove the
six solderings.

4

Power cord

Remove the
two solderings.

2-5. FERRITE ROD ANTENNA BOARD

Antenna cord setting
(BOX ASSY, ANT)

Set the Antenna cord as illustrated below,
then install the antenna box (upper).

Ferrite-rod antenna board

Box (upper), antenna

Antenna cord

4

Box (upper), antenna

5

Ferrite-rod
antenna board

2

Two claws

3

Box (lower),

antenna

Box (upper), antenna

— 6 —

1

Three screws (B1.7

× 8)

SECTION 3

ELECTRICAL ADJUSTMENTS

2-6. POWER CORD AND ANTENNA CORD SETTING

Power board

Main board

Power cord

Antenna cord

Set the power cord and the antenna cord
as illustrated below,
then install the cabinet (lower).

[FM]

Setting:

BAND switch: FM

FM RF signal generator

0.01 µF

22.5 kHz frequency
deviation by 400 Hz
signal

FM lead wire antenna terminal

set

speaker terminal

level meter

+
–

[MW/LW]

Setting:

BAND switch: MW/LW

Put the lead-wire

AM RF SSG

30% amplitude
modulation by
400 Hz signal
Output level: as low as possible

antenna close to
the set.

set

level meter

+

–

speaker terminal

Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.

• Adjusting Location: MAIN board (Component Side)

L4-1 MW TRACKING adjustment

T1 AM IF adjustment

CT3

FM TRACKING adjustment

L3

L1 MW FREQUENCY COVERAGE
adjustment

CT4 LW FREQUENCY COVERAGE
adjustment

CT2 LW TARCKING adjustment

CT1 MW TARCKING adjustment

L4-2 LW TRACKING adjustment

Power cord

Antenna cord

Cabinet (lower)

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

— 7 —

LW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L4-2 CT2

162 kHz 243 kHz

— 8 —

ICF-C255RC

4-1. PRINTED WIRING BOARDS

SECTION 4

DIAGRAMS

A

B

C

D

E

F

G

12

KEY BOARD

S213

CLOCK

POWER BOARD

T150

POWER

TRANSFORMER

W150

14

16

S214

TIME

1-676-851-

11

(11)

S210

DST

S212

A-RESET

S215

TIME

P150
AC IN

ALARM

LED BOARD

B

ALARM

MODE

A

TO

DIAL

W2

13

1-676

-852-

S1 BRIGHTNESS

D9

D10

345678910

SP1

(SPEAKER)

W151

11

(11)

R101

JC159

C120

R17

JC143

W200

18

1415

JC144

1

56

JC102

D6D7D8

MAIN BOARD

C30

C25

28

CF3

C24

JC160

JC112

C117

JC161

R27

E

C8

CN202

15

CF2

3

D1

41

T1

BPF1

2

1

CT3

K

CT2

CT1

1-676-849-

AM FERRITE-ROD

ANTENNA

L4

Q1

JC11

E

R1R2C2

E

12

(12)

C9

E

C10

Q4

CF1

L3

C19

C16

C120

114

E

L1

CT4

C26

Q5

E

R18

D5

JC162

R28

FERRITE-ROD ANTENNA BOARD

L451

FERRITE

ROD

ANTENNA

C459

R456

R453

C454

R459

C451

1

IC451

C455

R458

C456

20

1110

C457

C460

JC13

X451

R460

R16

VOL

FM

ANTENNA

R461

1-674-952-

VR1

• Semiconductor

Location

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

4

2

1

3

11

(11)

LOW

11

(11)

S202

M4

C156

D155

D154

D152

D153

13

OFF

CN2

E

E

S204

ON

S209

M5

H

L

JC153

R151

4

CN150

D151

CN201

HI

S208

1

PS150

1

5

CN200

18

S211

SNOOZE

JC155

R153

S206

M2

JC120

D100

D101

JC156

R25

C108

S207

M3

C157

JC119

JC154

R123

C159

TUNING

S200

S205

M1

C158

R21

R22

JC158

E

E

JC157

R26

LCD100 (LIQUID CRYSTAL DISPLAY)

S201

S203

BAND

1-676-850-

EE

X100

28

29

D5-D8

BACK LIGHT

Q151

R120

42 43

— 9 —

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• b : Pattern from the side which enables seeing.

— 10 —

4-2. SCHEMATIC DIAGRAM

ICF-C255RC

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 Ω and 1/
specified.

f

•

• C : panel designation.

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

• U : B+ Line.

• H : adjustment for repair.

• Voltages are dc with respect to ground under no-signal

• Voltages are taken with a VOM (Input impedance 10 MΩ).

• Signal path.

: internal component.

(detuned) conditions.
no mark : FM
( ) : MW/LW

Voltage variations may be noted due to normal produc­tion tolerances.

F : FM
f : MW/LW

: Impossible to measure

∗

4

W or less unless otherwise

• Waveform

1

IC100 wf (XOUT)

14µsec

2Vp-p

1V/div

10µsec/div

— 11 —

— 12 —

SECTION 5

S

EXPLODED VIEW

4-3. IC PIN FUNCTION DESCRIPTION

• IC100 LCD CONTROL (µPD17073GB-557-1A7)

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

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

I/O

O

Initialization output.

O

Mute output.

O

Band output.

O

ALARM A indicator.

O

ALARM B indicator.

O

Key strove signal.

I

Key return signal.

I

ALARM-TIME input.

Ι

DIAL signal.

−

Ground.

O

PLL error output.

I

LW/MW VCO input.

I

FM VCO input.

−

Regulator.

−

VDD

O

System clock output.

I

System clock input.

−

Regulator.

−

−

LCD bubbler.

−

O

LCD drive. Common signal.

O

LCD drive. Segment signal.

O

Not used.

I

Power failure detection.

I

Not used.

O

Buzzer output.

O

Band output.

I

Initialization input.

Description

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
delay should be anticipated when ordering these
items.

7

6

30

8

• The mechanical 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.

2

9

5

13

11

14

22

10

a

4

23

3

12

1

T150

17

The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.

24

29

SP1

a

27

P150

25

26

28

20

19

not supplied

15

16

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

1 3-045-666-51 CABINET (UPPER)
2 3-045-669-01 KNOB(ALARM)
3 3-045-670-21 BUTTON (ALARM)
4 3-045-668-21 BUTTON (MAIN)
5 7-685-647-79 SCREW+P 3X10 TYPE2 NON-SLIT

6 3-045-675-11 PANEL, FRONT
7 X-3379-210-1 PANEL ASSY, FRONT
8 3-049-387-01 SHEET (WINDOW), ADHESIVE
9 3-045-677-01 WINDOW (LED)
10 3-045-672-01 CHASSIS

* 11 A-3663-591-A MAIN BOARD, COMPLETE

12 3-933-547-01 SHEET (BAND)
13 3-919-268-01 KNOB (VOL)
14 3-045-655-11 CABINET (LOWER)
15 3-368-852-01 FOOT

16 7-685-649-79 SCREW +P3X14 TYPE2 NON-SLIT
17 3-371-765-21 SCREW (2X8), +BTP

* 20 1-535-771-11 TERMINAL

0P150 1-555-795-00 CORD, POWER

0T150 1-435-504-11 TRANSFORMER, POWER

— 13 — — 14 —

16

18 1-553-856-00 SWITCH, KEYBOARD
19 1-676-851-11 POWER BOARD

21 A-3638-829-A DIA L(ALARM) ASSY
22 1-676-850-11 KEY BOARD

23 1-676-852-11 LED BOARD
24 3-038-572-11 BOX (UPPER), ANTENNA
25 1-674-952-11 FERRITE-ROD ANTENNA BOARD
26 3-038-573-11 BOX (LOWER), ANTENNA
27 3-318-203-31 SCREW (B1.7X8), TAPPING

28 3-040-333-01 FOOT
29 A-3638-866-A BOX ASSY, ANT
30 3-045-676-11 WINDOW (LCD)
SP1 1-504-748-21 SPEAKER (6.6cm)

18

21

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.

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

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

• CAPACITORS:
uF: µF

• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable

• COILS
uH: µH

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

FERRITE-ROD ANTENNA

KEY LED

• 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.

The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.

*********

MAIN

< 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)

< 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

— 15 —

MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

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 >

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

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

IC1 8-752-050-16 IC CXA1019M-T6
IC100 8-759-662-01 IC uPD17073GB-557-1A7

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

< TRIMMER >

< DIODE >

< IC >

< JUMPER >

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

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

— 16 —

MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

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

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 >

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

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

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

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)

— 17 —

ICF-C255RC

MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

T1 1-404-790-11 TRANSFORMER, IF

VR1 1-228-790-00 RES, VAR, CARBON 50K (VOL)

X100 1-767-517-11 VIBRATOR, CRYSTAL 75kHz

**************************************************************

* 1-535-771-11 TERMINAL

0 T150 1-435-504-11 TRANSFORMER, POWER

**************************************************************

POWER

< TRANSFORMER >

< VARIABLE RESISTOR >

< VIBRATOR >

1-676-851-11 POWER BOARD

************

< TRANSFORMER >

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)

0 P150 1-555-795-00 CORD, POWER

**************************************************************

ACCESSORIES & PACKING MATERIALS

*******************************

3-046-171-11 MANUAL, INSTRUCTION

(ENGLISH, FRENCH, GERMAN, DUTCH)

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

9-927-908-31

Sony Corporation

Audio Entertainment Group

— 18 —

Printed in Japan ©2000.5

2000E1636-1

Published by PE General Engineering Dept.