Sony ICF-S10MK2 User Manual

ICF-S10MK2

SERVICE MANUAL

Ver 1.0 2002.01

SPECIFICATIONS

Frequency range

FM: 87.5 – 108 MHz
AM: 530 – 1605 kHz

Speaker

Approx. 5.7 cm dia., 8 ohms

Power output

100 mW (at 10% harmonic distortion)

Output

@ jack (minijack)

Power requirements

3V DC, two R6 (size AA) batteries

Battery life

Using Sony SUM-3 (NS) batteries

FM: Approx. 40 hours
AM: Approx. 45 hours

Dimensions

Approx. 71 × 118.5 × 30 mm (w/h/d)

7

3

/

× 1

4

3

/

in)

16

/

× 4

(2

8

Mass

Approx. 202 g (7 oz.) incl. batteries

Design and specifications are subject to change
without notice.

E Model

Australian Model

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.

9-873-460-01 Sony Corporation

2002A0500-1 Personal Audio Company
C 2002.1 Published by Sony Engineering Corporation

FM/AM RADIO

ICF-S10MK2

SECTION 1

GENERAL

Power switch/VOL

(volume) control

Przełącznik zasilania/

regulator głośności
(VOL)

Hlavní vypínač/

ovladač VOL
(hlasitost)

TUNE

@

Telescopic

antenna

Antena

teleskopowa

Teleskopická

anténa

TUNING
BAND

This section is extracted from
instruction manual.

Rear

Tył
Zadní strana

R6(AA)×2

2

SECTION 2

DISASSEMBLY

• This set can be disassembled in the order shown below.

2-1. DISASSEMBLY FLOW

REAR CABINET

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

ICF-S10MK2

SET

(Page 3)

MAIN BOARD

(Page 3)

2-2. REAR CABINET

2-3. MAIN BOARD

3

ICF-S10MK2

• This set can be assembled in the order shown below.

3-1. ASSEMBLY FLOW

SECTION 3

ASSEMBLY

POINTER

(Page 4)

KNOB (TUNING)

(Page 5)

MAIN BOARD

(Page 5)

3-2. POINTER

4

3-3. KNOB (TUNING)

ICF-S10MK2

3-4. MAIN BOARD

5

ICF-S10MK2

r

r

SECTION 4

ELECTRICAL ADJUSTMENTS

0 dB=1 µV

[AM]

Setting:

BAND switch : AM

AM RF signal

generator

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

[FM]

Setting:

BAND switch : FM

FM RF signal

generator

22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible

Put the lead-wire
antenna close to
the set.

TP (FM ANT)

0.01 µF
set

set

jack (J1)

v

v

jack (J1)

16

16

Ω

level mete

Ω

level mete

+
–

+

–

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter

T1 455 kHz

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter

L4 520 kHz

CT4 1,650 kHz

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L1 620 kHz

CT1 1,400 kHz

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter

L2 86.5 MHz

CT3 109.5 MHz

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L3 87.5 MHz

CT2 108 MHz

• Repeat the procedures in each adjustment several times for a
maximum reading on level meter, and the frequency coverage
and tracking adjustment should be finally done by the trimmer
capacitors.

Adjustment Location:

– MAIN BOARD (Component Side) –

CT1}AM Tracking
L1 Adjustment

AM Frequency Coverage

CT4

}

L4 Adjustment

FM Frequency Coverage

L2

}

CT3 Adjustment

FM Tracking

L3

}

CT2 Adjustment

T1

AM IF

Adjustment

6

5-1. BLOCK DIAGRAM

ANT1

CT1, L1

AM FERRITE-ROD

ANTENNA

CV1

TUNING

L1

AM TRACKING

SECTION 5

DIAGRAMS

FM
RF IN

13

FM
RF

10

AM
RF IN

11

FM

FRONT-END

AM

FRONT-END

FM/AM

IF OUT

15 18

+

10.7MHz

T1

AM IF

CF2

CF1

455kHz

CF3

10.7MHz

FM/AM FRONT-END,

FM/AM IF AMP, DET, AGC, AF AMP

FM IF IN

FM DISCRI

3

17

AM IF IN

DISCRIMINATOR

AM IF AMP,

AGC, DET

IC1

FM

IF AMP

FM

TUNING METER

DET
OUT

24 25

+

AF
IN

RV1-1

VOL

5

VOL

AF

POWER AMP

OUT

ICF-S10MK2

AF

SP1

J1

v

28

CV1-3

CT1

L3

FM RF

CV1-2

CT2

CT2, L3

FM TRACKING

CT4, L4

AM FREQUENCY

COVERAGE

L4

AM OSC

L2

FM OSC

CV1

TUNING

CV1-4

CV1-3

AM OSC

6 8

CT4

CT3

FM OSC

CT3, L2

FM FREQUENCY

COVERAGE

FM/AM

BAND

16

SELECT

SW1

BAND

AM

FM

D1

TUNE

METER

20

REG OUT

9

B+ (1.25V)

VCC

27

• SIGNAL PATH

RV1-2

OFF

: FM

: AM

DRY BATTERY

SIZE “AA”

(IEC DESIGNATION R6)

2PCS. 3V

77

ICF-S10MK2

5-2. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• W : indicates side identified with part number.

f

•

: internal component.

• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)

• IC Block Diagram

IC1 CXA1019S

GND

GND

AF OUT

VCC

RIPPLE

FILTER

AF IN

DET OUT

AFC AGC

AFC AGC

IF GND

METER

N.C

FM IF IN

FE GND

AM IF IN

15141312

N.C

FM RF IN

23 22 21 202425 19 18 17 1629 28 27 2630

AM IF DET AGC

AF POWER AMP AM FE FM IF

FM

DISCRIMINATOR

FM FE

2 345 6 7 8 9

1

GND

GND

NF

FM DISCRI

VOL

AM OSC

AFC

FM OSC

10

REG OUT

TUNING

METER

FM RF

11

AM RF IN

FM/AM BAND

SELECT

IF OUT

FM/AM

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

•

: internal component.

• C : panel designation.

• A : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 3 V and fed with regulated dc po wer

supply from battery terminal.

• Voltages and w av eforms are dc with respect to ground in
no-signal (detuned) conditions.
no mark : FM
( ) : AM

• Voltages are tak en with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Signal path.

F : FM
f : AM

4

W or less unless otherwise

5-3. PRINTED WIRING BOARD

1 2 3 4 5 6 7

ANT1

MAIN BOARD

A

TP

(FM ANT)

B

RV1 (2/2)

OFF

C1

RV1 (1/2)

VOL

R2

C

R10

1

R7

+

D

J1

C23

C24

30

v

+

–

E

C20

+

+

C22

C19

+

F

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

2PCS. 3V

IC1

C21

R4

R3

D1

TUNE

L1

C6

C10

+

C4

L4

SP1

L2

C9

R8

C8

C5

R1

+

C11

CF3

C12

C18

CV1

TUNING

CV1-4

CT3 CT2

L3

CF2

C14

R5

T1

CF1

C17+C16

CT1

CV1-1

CV1-2

C3

+

1-662-703-

C7

C2

L5

SW1

SW1

BAND

FM

AM

C13

11

(11)

CT4

CV1-3

15

R6

16

+

C15

AM FERRITE-ROD ANTENNA

88

5-4. SCHEMATIC DIAGRAM • See page 8 for IC Block Diagram.

L1

AM

FERRITE-ROD

ANTENNA

ANT1

TP

(FM ANT)

ICF-S10MK2

CV1

TUNING

CT1

CV1-1 CV1-2 CV1-4

FM RF FM OSC AM OSC

C1

33p

CT2

C3

33p

L2L3

0.022

CT3

CV1-3

C5

0.01

L4

C12

CT4

C10R8 C9C7C6

8.2p3.3k 27p18p3.9p

RV1-1

50K

R3

VOL

1k

SW1

BAND

AM

FM

0.01

C13

L5

FM/AM FRONT-END,

FM/AM IF AMP,

DET,AGC,AF AMP

CXA1019S

R5

2.2k

C14

100p

T1

R4
C4
10

FM/AM

FM/AM

BAND

IF OUT

SELECT

50V

C8
1p

FE

AM

GND

IF IN

NC

FM

FM

RF IN

IF IN

AM

RF IN

FM RF

REG OUT

IF

NC

METER

GND

AFC

AGC

FM OSC

AFC

AGC

AFC

DET OUT

SLP-181B-51

AM OSC

AF IN

0.47

D1

TUNE

C19

50V

VOL

RIPPLE

FILTER

NF

VCC

C11

1

50V

FM

DISCRI

OUT

AF

GND

GND

C22

10 50V

CF3

10.7MHz

R1

100k

GND

GND

C24
220
10V

C2

33p

IC1

R6

330

6.8k

R2

150

SP1

J1

CF1 CF2

455KHz 10.7MHz

R7
1k

R10

6.8k

C18C17C16C15

10

50V

4.7
50V

0.02210

50V

C20
470

6.3V

C23C21

0.10.1

RV1-2

OFF

DRY BATTERY

SIZE"AA"

(IEC DESIGNATION R6)

2PCS. 3V

99

ICF-S10MK2

SECTION 6

EXPLODED VIEW

NOTE:

• -XX and -X mean standardized parts, so they
may have some difference from the original
one.

• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑↑

Parts Color Cabinet's Color

• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

• The mechanical parts with no reference num­ber in the exploded views are not supplied.

• Accessories are given in the last of the elec­trical parts list.

Ref. No. Part No. Description Remark

1 3-938-879-01 CABINET (FRONT) (BLACK)
1 3-938-879-41 CABINET (FRONT) (SILVER)
2 3-241-522-01 SCALE, DIAL
3 3-938-881-01 POINTER
4 3-938-875-01 KNOB, VOL

* 5 A-3679-803-A MAIN BOARD, COMPLETE

7 3-893-381-01 STRAP, HAND
8 3-938-883-01 CABINET (REAR) (BLACK)
8 3-938-883-61 CABINET (REAR) (SILVER)
9 3-938-886-01 LID, BATTERY CASE (BLACK)

9 3-938-886-41 LID, BATTERY CASE (SILVER)
10 3-903-414-01 TERMINAL, MIDWAY
11 3-938-874-01 KNOB, TUNING

Ref. No. Part No. Description Remark

12 3-364-778-01 SPRING, MINUS
13 3-903-415-01 TERMINAL, PLUS
14 3-318-203-71 SCREW (B1.7X5), TAPPING

* 15 3-009-415-01 HOLDER, FERRITE-ROD ANTENNA

16 3-364-941-11 SCREW (+B) (2.6X5), NYLOK

ANT1 1-501-247-32 ANTENNA, TELESCOPIC
L1 1-402-545-11 ANTENNA, FERRITE-ROD (AM)
SP1 1-503-616-11 SPEAKER
#1 7-627-552-47 SCREW, PRECISION +P 1.7X4
#2 7-627-553-48 SCREW, PRECISION +P 2X4

#3 7-685-533-19 SCREW +BTP 2.6X6 TYPE2 N-S
#5 7-623-505-01 LUG, 2
#6 7-623-420-07 LW 2, TYPE B

MAIN

SECTION 7

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 and -X mean standardized parts, so they
may have some difference from the original
one.

• 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-3679-803-A MAIN BOARD, COMPLETE

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

* 3-009-415-01 HOLDER, FERRITE-ROD ANTENNA

3-318-203-71 SCREW (B1.7X5) , TAPPING
3-938-875-01 KNOB, VOL
7-623-420-07 LW 2, TYPE B
7-627-552-47 SCREW, PRECISION +P 1.7X4

< CAPACITOR >

C1 1-162-211-31 CERAMIC 33PF 5% 50V
C2 1-162-211-31 CERAMIC 33PF 5% 50V
C3 1-162-211-31 CERAMIC 33PF 5% 50V
C4 1-126-964-11 ELECT 10uF 20% 50V
C5 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V

C6 1-162-194-31 CERAMIC 3.9PF 10% 50V
C7 1-163-099-00 CERAMIC CHIP 18PF 5% 50V
C8 1-163-217-11 CERAMIC CHIP 1PF 0.25PF 50V
C9 1-102-961-00 CERAMIC 27PF 5% 50V
C10 1-162-198-31 CERAMIC 8.2PF 10% 50V

C11 1-126-960-11 ELECT 1uF 20% 50V
C12 1-162-306-11 CERAMIC 0.01uF 20% 16V
C13 1-162-306-11 CERAMIC 0.01uF 20% 16V
C14 1-162-282-31 CERAMIC 100PF 10% 50V
C15 1-126-964-11 ELECT 10uF 20% 50V

C16 1-126-963-11 ELECT 4.7uF 20% 50V
C17 1-126-964-11 ELECT 10uF 20% 50V
C18 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C19 1-124-902-00 ELECT 0.47uF 20% 50V
C20 1-126-941-11 ELECT 470uF 20% 6.3V

• 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

D1 8-719-038-29 LED SLP-181B-51 (TUNE)

IC1 8-752-055-05 IC CXA1019S

J1 1-778-961-11 JACK (v)

L1 1-402-545-11 ANTENNA, FERRITE-ROD (AM)
L2 1-409-565-11 COIL, AIR-CORE
L3 1-406-917-11 COIL, AIR-CORE
L4 1-406-028-00 COIL, OSC (AM)
L5 1-428-222-11 COIL, AIR-CORE

R1 1-216-246-00 RES-CHIP 100K 5% 1/8W
R2 1-249-407-11 CARBON 150 5% 1/4W
R3 1-249-417-11 CARBON 1K 5% 1/4W
R4 1-249-427-11 CARBON 6.8K 5% 1/4W
R5 1-249-421-11 CARBON 2.2K 5% 1/4W

R6 1-216-037-00 METAL CHIP 330 5% 1/10W
R7 1-249-417-11 CARBON 1K 5% 1/4W
R8 1-216-061-00 RES-CHIP 3.3K 5% 1/10W
R10 1-216-069-00 METAL CHIP 6.8K 5% 1/10W

When indicating parts by reference
number, please include the board.

< LED >

< IC >

< JACK >

< COIL >

< RESISTOR >

< VARIABLE RESISTOR >

C21 1-136-165-00 FILM 0.1uF 5% 50V
C22 1-126-964-11 ELECT 10uF 20% 50V
C23 1-136-165-00 FILM 0.1uF 5% 50V
C24 1-104-666-11 ELECT 220uF 20% 10V

< CERAMIC FILTER >

CF1 1-781-962-11 FILTER, CERAMIC (455kHz)
CF2 1-760-233-71 FILTER, CERAMIC (10.7MHz)
CF3 1-760-234-11 DISCRIMINATOR, CERAMIC (10.7MHz)

< VARIABLE CAPACITOR >

CV1 1-151-691-11 CAP, VAR (TUNING)

1010

RV1 1-223-825-11 RES, VAR, CARBON (WITH S) 50K (VOL, OFF)

< SWITCH >

SW1 1-552-370-00 SWITCH, SLIDE (BAND)

< TRANSFORMER >

T1 1-404-790-11 TRANSFORMER, IF

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

MISCELLANEOUS

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

ANT1 1-501-247-32 ANTENNA, TELESCOPIC
SP1 1-503-616-11 SPEAKER

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

ICF-S10MK2

Ref. No. Part No. Description Remark

ACCESSORIES

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

3-858-197-31 MANUAL, INSTRUCTION

(SPANISH, FRENCH, GERMAN, DUTCH,

SWEDISH, ITALIAN, PORTUGUESE,

SIMPLIFIED CHINESE)

Ref. No. Part No. Description Remark

11

ICF-S10MK2

REVISION HISTORY

Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.

Ver. Date Description of Revision

1.0 2002.01 New