Sony ICF ICF-SW11 Manual de usuario

ICF-SW11

US Model

Canadian Model

AEP Model

E Model

Chinese Model

Tourist Model

SERVICE MANUAL

FM STEREO/SW1-9/

MW/LW 12 BAND RECEIVER

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

9-927-176-12

2001J1600-1

Ver 1.1 2001. 10

SPECIFICATIONS

Frequency range:

FM: 87.5 – 108 MHz (Other models)

76 – 108 MHz (Tourist model)

SW1: 4.750 – 5.060 MHz (Other models)

3.850 – 4.050 MHz (Tourist model)

SW2: 5.900 –6.200 MHz

SW3: 7.100 – 7.350 MHz

SW4: 9.400 – 9.990 MHz

SW5: 11.600 – 12.100 MHz

SW6: 13.570 – 13.870 MHz

SW7: 15.100 – 15.800 MHz

SW8: 17.480 – 17.900 MHz

SW9: 21.450 – 21.750 MHz

MW: 525 – 1620 MHz

LW: 141 – 290 kHz

Speaker Approx. 5.7 cm (21/4inches) dia., 4 Ω

Power output 140 mW (at 10 % harmonic distortion)

Ourput Headphones jack (stereo minijack, 3.5 mm dia)

Power requirements

3 V DC, two R6 (size AA) batteries

DC IN 3V jack accepts : AC power adaptor

(Except chinese model)

AC-E30L, HG (not supplied)

Battery life Approx. 30 hours with Sony SUM-3 (NS)

Dimensions Approx. 162 ×93.8 ×34.8 mm(w/h/d)

(61/2×33/4×13/8inches)

Mass Approx. 340 g (12 oz) incl. batteries

Supplied accessory

Short wave guide (1)

Accessories not supplied

AC power adaptor

*AC-E3L, HG

LW/MW/SW wide range antenna AN-1, AN-102

*The voltage of power supply is different depending on the country .

Please buy an AC power adaptor in the country where the radio is

to be used.

Design and specifications are subject to change without notice.

— 2 —

TABLE OF CONTENTS

1. GENERAL ·········································································· 3

2. DISASSEMBLY

2-1. Rear Cabinet ··································································· 4

2-2. Front Cabinet, Main Board ············································· 4

2-3. Dial Pointer Setting ························································· 5

3. ELECTRICAL ADJUSTMENT ···································· 6

4. DIAGRAMS

4-1. IC Block Diagram ··························································· 8

4-2. Printed Wiring Board ······················································ 9

4-3. Schematic Diagram ······················································· 11

5. EXPLODED VIEWS ······················································ 13

6. ELECTRICAL PARTS LIST ······································· 14

—3 —

SECTION 1

GENERAL

BAND

select switch

BAND

indicator

POWER

switch

—4 —

SECTION 2

DISASSEMBLY

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

2-1. REAR CABINET

2-2. FRONT CABINET, MAIN BOARD

2Stand

3Three screws

(P2.6 ×16)

4Two screws

(P2.6 ×16)

5Cabinet (rear)

(The cabinet is locke

by the claws)

1Lid, battery case

Claw

2Front Cabinet

Main chassi

Main

chassis

Claw

8MAIN BOARD

4Terminal, battery

7Terminal

(Minus),

battery

MAIN

board

MAIN

board

MAIN

board

1Screw

(P2 ×8)

3Screw

(BTP2.6 ×8)

—5 —

2-3. DIAL POINTER SETTING

3Screw

(1.7 ×3) Flat (+) special

2Mach the hole with setting

the variable capacitor gear gap

in the arrow Adirection.

1Turn the variable capacitor

fully counterclockwise.

5Scale, dial

4Belt (Tun)

7First, turn the tuning shaft fully in the arrow Adirection.

Move only the dial pointer in the arrow Bdirection and

set it on the center of the scratched lines on the dial scale plate.

Apply suitable locking compound to Cportion.

6Pointer

Knob (Tun)

Center of

scratched line

—6 —

SECTION 3

ELECTRICAL ADJUSTMENTS

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on Level meter.

L7 CT1-4

87.3MHz (75MHz) 108.3MHz (109.5MHz)

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on Level meter.

L6 CT1-3

87.3MHz (75MHz) 108.3MHz (109.5MHz)

MW FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on Level meter.

L4 CT1-2

520kHz 1,650kHz

MW TRACKING ADJUSTMENT

Adjust for a maximum reading on Level meter.

L1 CT1-1

600kHz 1,400kHz

AM IF ADJUSTMENT

Adjust for a maximum reading on Level meter.

455kHz

LW FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on Level meter.

L5 CT3

137kHz 295kHz

LW TRACKING ADJUSTMENT

Adjust for a maximum reading on Level meter.

L2 CT2

155kHz 260kHz

FM section

Setting

BAND switch : FM

22.5 kHz frequency

deviation by

400 Hz signal

Output level : as low as possible

telescopic antenna inpu

FM RF signal

generator

Set

0.01µF

MW/LW section

Setting

BAND switch : MW/LW

AM RF signal

generator

Put the lead-wir

antenna close

to the set.

30% amplitude

modulation by

400 Hz signal

Output level : as low as possible

SW section

Setting

BAND switch : SW1 –SW9

30 % amplitude

modulation by

400 Hz signal

Output level : as low as possible

telescopic antenna inpu

AM RF signal

generator

Set

8pF

Set

Headphones jack (J1)

Level meter

32Ω

•Repeat the procedures in each adjustment several times, and the

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

•This adjustment should be executed after MW band adjustment

is completed because the LW and SW bands use the BAR ANT

and CV1 in common with the MW band.

Therefore, if MW band is adjusted, the LW and SW bands must

also be readjusted.

•Preparation for SW band adjustment

After making sure that the MW band adjustment has completed,

set the pointer to the center of character of 6.0, 7.2, 11.8 or

21.6MHz which is reference position of dial character, and fix

the CV1 at this position.

( ) : Tourist model

0 dB=1µV

—7 —

TUNE

CF2

L29

R16

C36

C39

L26

CV-1,CT-1

TUNING CT1

1516

–

Frequency counte

33kΩ

1µF

SW FREQUENCY CENTER ADJUSTMENT

Adjust for a maximum reading on Level meter.

SW1 L25 4.85MHz (3.88MHz)

SW2 L24 6MHz

SW3 L23 7.2MHz

SW4 L22 9.62MHz

SW5 L21 11.8MHz

SW6 L20 13.65MHz

SW7 L19 15.35MHz

SW8 L18 17.65MHz

SW9 L17 21.6MHz

1. After completion of SW1-9 adjustment, confirm that each center

frequency +910kHz signal is received from AM reference signal

generator.

2. If not received, readjust, then repeat 1.

( ) : Tourist model

[VCO Adjustment]

Procedure :

Center frequency :98 MHz

Modulation : no modulation

Output level : 0.1 V (100dB) telescopic antenna input

FM RF signal

generator

Set

1. Insert the plug to Headphones jack (J1).

2. Connect frequency counter to the positions shown the figure

right.

3. Tune the set to 98 MHz.

4. Adjust RV1 so that the frequency counter reading becomes

76,000Hz.

Specification Value :

Frequency counter

75,950 –76,050 Hz

Adjustment Location : MAIN board (component side)

MAIN BOARD (conductor side)

L24 L21 L25 L23 L22

SW Frequency Center Adjustment

L20 L19 L18 L17 L7 CT1-4

CT1-3

AM IF

Adjustment

Tracking

Adjustment

Tracking

Adjustment

LW Frequency

Coverage

Adjustment

CT1-2 MW Frequency

Coverage

Adjustment

CT2 LW Tracking

Adjustment

CT1-1 MW Tracking

Adjustment

FM Tracking

Adjustment

MW Frequency

Coverage

Adjustment

CT3

LW Frequency

Coverage

Adjustment

FM Frequency Coverage Adjustment

RV1

VCO

Adjustment

—8 —

SECTION 4

DIAGRAMS

4-1. IC BLOCK DIAGRAM

IC1 CXA1238M-T6

30 29

4 5 6 7 8 9 10 11 12 13 14 15321

28 27 26 25 24 23 22 21 20 19 18 17 16

REG

FM FRONT-END

AM FRONT-END

VCO MPX REG.

1/2

COUNTER

1/2

COUNTER

PD1

PD2

MUTING

DECODER AMP

MONO/ST

SELECT

RIPPLE

FILTER

AUTOBLEND

BAND PASS

MUTE

TUNING

INDICATOR

FM IF/

DISCRI

IF/DET

GND

PLL LPF2

MPX REG

VCO

DISCRI

MUTE

AM OSC

AFC

FM OSC

REG

FM RF

AM RF IN

FM RF IN

BAND SELECT

AM IF IN

FM IF IN

TUNE IND

GND

VCC

L CH OUT

R CH OUT

ST IND/

VCO CHECK

PILOT DET LPF2

PLL LPF1

AGC AFC2

AGC AFC1

RIPPLE

FILTER

FM GND

FM/AM

FE OUT

ICF-SW11

4-2. PRINTED WIRING BOARD

345678910111213

JE MODEL

EXCEPT JE MODEL

EXCEPT JE

MODEL

MAIN BOARD

(15)

DC IN 3V

DRY BATTERY

SIZE "AA"

(ICE DESIGNATION R6)

2PCS, 3V

SP901

(SPEAKER)

RV1

ANT1

TELESCOPIC

ANTENNA

RV2

VOLUME

TUNE

POWER

OFF

L27

L28

L24

C57

C55

C60

C61

C67

C66

C64

L25L23L22L19L18

L17

L15

L13

L20

L21

CT3

BAR

ANTENNA

C52

C44

C45

C51

C40

C43

CF1

CF2

L29

R16

C36

C39

L26

L10

L12

L11 L14

L16

CV-1,CT-1

TUNING

CV1-1

CV1-2

CV1-4

CT1-4

CT1-2

CT1-1

CT1-3

CV1-3

CF3

2SI BAND

FW MW LW SW9 SW8 SW7 SW6 SW5 SW4 SW3 SW2 SW1

916

CT2

-2

-3

-1

-4

1516

—9 — — 10 —

Ref. No. Location

D1 C-11

D2 A-1

D3 B-11

IC1 C-5

IC2 D-10

Q4 B-4

Q5 B-4

Q6 B-6

• Semiconductor

Location

Note on Printed Wiring Board:

•X: parts extracted from the component side.

•b: Pattern from the side which enables seeing.

•Abbreviation

JE : Tourist model

ICF-SW11

4-3. SCHEMATIC DIAGRAM

—11 — — 12 —

L7,CT1-4

FM FREQUENCY

COVERAGE

L17-L25

SW FREQUENCY

COVERAGE

L6, CT1-3

FM TRACKING

L4, CT1-2L5, CT3

MW FREQUENCY COVERAGE

LW FREQUENCY COVERAGE

L1, CT1-1

MW TRACKING

L2, CT2

LW TRACKING

EXCEPT

MODEL

EXCEPT JE

MODEL

(JE)

27µH(EXCEPT JE)

JE MODEL

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.

•U: B+ Line.

•C: panel designation.

•H: adjustment for repair.

no mark :

( ) : MW

< > : SW

[]:LW

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

Voltage variations may be noted due to normal production

tolerances.

•Signal path.

F: FM

•Abbreviation

JE : Tourist model

•Refer to page 8 for IC Block Diagrams.

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