Sony WM-FS555 - S2 SPORTS WALKMAN Bedienungsanleitung

WM-FS555/FS556

SERVICE MANUAL

SPECIFICATIONS

US Model

WM-FS555/FS556

Canadian Model

AEP Model

E Model

WM-FS555

Model Name Using Similar Mechanism NEW

MD Mechanism Type MF-WMFS555-114

9-873-595-02

2003A0200-1

Sony Corporation

Personal Audio Company

Pubulished by Sony Engineering Corporation

RADIO CASSETTE PLAYER

Photo : WM-FS555

•Frequency

TV: 2-13 ch

WEATHER: 1-7ch

FM: 87.5-108 MHz

AM: 530-1710 kHz (North, Central and South America)

531-1602 kHz (Other counries)

•Power requirements

1.5 V DC battery size AA (R6) ×1

•Dimensions

Approx. 102.3 ×117.5 ×47.3 mm (4 1/8×4 3/4×17/8inches)

including projecting parts and controls

•Mass

Approx. 219 g (7.8 oz) (main unit only)

•Supplied accessories

Stereo headphones or earphones (1)

Hand strap with belt clip (1)

Design and specifications are subject to change witout notice.

Ver 1.1 2003.01

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WM-FS555/FS556

Specifications ........................................................................... 1

1. GENERAL ...................................................................... 2

2. DISASSEMBLY

2-1. Chassis, H/P Board ..................................................... 3

2-2. Main Board ................................................................. 3

2-3. Mechanism Deck ........................................................ 4

2-4. Belt, Capstan/reel Motor (M601),

Magnetic Head (Playback) (HP601) ........................... 4

3. ADJUSTMENTS

3-1. Mechanical Adjustments ............................................ 5

3-2. Electrical Adjustments ................................................ 5

4. DIAGRAMS

4-1. Explanation of IC Terminals....................................... 8

4-2. Block Diagrams .......................................................... 9

4-3. Printed Wiring Boards – Main Section –.................. 10

4-4. Schematic Diagram – Main Section (1/2)– ...............11

4-5. Schematic Diagram – Main Section (2/2)– .............. 12

4-6. IC Block Diagrams ................................................... 13

5. EXPLODED VIEWS

5-1. Cassette Lid Section ................................................. 15

5-2. Cabinet Section......................................................... 16

5-3. Mechanism Deck Section

(MF-WMFS555-114)............................ 17

6. ELECTRICAL PARTS LIST................................... 18

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.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

TABLE OF CONTENTS

SECTION 1

GENERAL

TV/WEATHER (US), FM (EXCEPT US)

HOLD

VOLUME*

TUNING+/–

PRESET +/–

FM/AM (US), AM (EXCEPT US)

RADIO OFF

n**

SET

ENTER

Rubber cap

Air outlet

* There is a tactile dot beside VOLUME on the main unit to

show the direction to turn up the volume.

** The button has a tactile dot.

This section is extracted from

instruction manual.

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2Two screws

(B1.7 ×8)

1Open the “lid, Cassette”

H/P board

3Claws Cabinet (rear) sub ASSY

Chassis

SECTION 2

DISASSEMBLY

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

2-1. CHASSIS, H/P BOARD

2-2. MAIN BOARD

zThe equipment can be removed using the following procedure.

Main boardChassis, H/P board Mechanism deck Belt, Capstan/reel motor (M601),

Magnetic head (playback) (HP901)

Set

1Remove solder

(four places)

3Screw

(WH M1.4)

2Remove solder

(six places)

4Claws

Main boar

Head flexible board

Chassis

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2-3. MECHANISM DECK

2-4. BELT, CAPSTAN/REEL MOTOR (M601), MAGNETIC HEAD (PLAYBACK) (HP901)

1Claw

Mechanism deck

Chassis

wheel ASSY (P), capstan

Belt

• How to apply the belt Capstan/reel motor

(M601)

Belt

magnetic head

(PLAYBACK)

(HP901)

Capstan/reel motor

(M601)

Two screws (M1.4)

Mechanism deck

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3-2. ELECTRICAL ADJUSTMENTS

PRECAUTION

• Supplied voltage : 1.5 V.

• Switch and control position (MENU display)

MEGA BASS : OFF

VOLUME control (RV301) : maximum

AVLS : OFF (No indicated)

FM MODE : US : DX (No indicated)

Canadian, AEP, E : STEREO (No indicated)

TAPE SECTION

TestTape

Type Signal Used for

WS-48A 3kHz, 0dB Tape Speed Adjustment

Tape Speed Adjustment

Procedure :

1. Playback WS-48A (tape center part) in the FWD state and ad-

just RV601 so that the frequency counter reading becomes

3,000Hz.

Standard value : 2,985–3,015Hz

2. Playback WS-48A (tape center part) in the REV state.

Check that frequency counter reading is within ±1.0% of the

reading of step 1.

Adjustment Location :

3-1. MECHANICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened

swab :playback head pinch roller

capstan rubber belt

2. Demagnetize the playback head with a head demagnetizer.

Do not use a magnetized screwdriver for the adjustments.

3. These measurement and adjustment should be performed with

the rated power supply voltage (1.5 V) unless otherwise noted.

Torque Measurement

Mode Torque meter Meter reading

FWD 1.97 – 4.11 mN • m

20 – 42 g • cm

(0.28 – 0.58 oz• inch)

FWD CQ-102C less than 0.19 mN • m

less than 2 g • cm

back tension (less than 0.027 oz• inch)

1.97 – 4.11 mN • m

REV 20 – 42 g • cm

(0.28 – 0.58 oz• inch)

REV CQ-102RC less than 0.19 mN • m

less than 2 g • cm

back tension (less than 0.027 oz• inch)

FF, REW CQ-201B more than 3.93 mN • m

more than 40 g • cm

(more than 0.56 oz• inch)

SECTION 3

ADJUSTMENTS

0 dB = 0.775V

set

test tape

WS-48A

(3kHz, 0dB) frequency counter

16 Ω

phones jack (J301)

RV601: Tape speed Adjustment

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FERRITE–ROD

ANTENNA

C30

R10

C26

C22

R13

Q302

C29

(VT)

C31

C24

R213

C21

C13

C331

C14

C19

R113

C28

OFF

Q305

C23

C35

C107

C207

R716

C20

JC1

C15

Q703

R20

R21

TP304

C11

C12

R107

R108

R105

R205

R208

R207

TAP102

TAP103

TAP104

(11)

1-682-795-

MAIN BOARD (SIDE B)

TP (VT)

digital voltmeter

(DC range)

TUNER SECTION

AM Section

BAND : AM

FM Section

BAND : FM

US model only

TV/WEATHER Section

BAND: TV/WEATHER

Adjustment Location : Main board (See page 7)

0 dB = 1µV

AM RF signal

generator

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

Put the lead-wire

antenna close to

the set.

set

16 Ω

phones jack (J301)

level meter

Frequency Coverage Adjustment

Setting :

FERRITE–ROD

ANTENNA

R10

C26

C22

C34

Q305

C23

C35

C107

C207

FB301

C37

JC4

FB1

TP304

TAP103

TAP105

TAP106

1-6

FM RF signal

generator

33.75kHz frequency

deviation by 1kHz signal.

Output level :

as low as possible

(RF) 0.01

MAIN BOARD (SIDE B)

TP(RF)

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

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors. no mark : 10kHz step

< > : 9kHz step

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust parts Frequency display Reading on digtal

voltmeter

L5 530kHz 1.1 ±0.15 V

<531kHz>

Confirmation 1,710kHz 8.6 ±0.4 V

<1,602kHz> 9.5 ±0.4 V

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L4 620kHz <621kHz>

CT1 1,400kHz <1,395kHz>

FM FREQUENCY COVERAGE CONFIRMATION

Frequency display Reading on digtal voltmeter

Confirmation 87.5MHz Standard value : 6.5V or less

Confirmation 108MHz 8.9 ±0.4V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L2 87.5MHz (US), 98MHz (EXCEPT US)

Confirmation 108MHz

US model only

TV TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L7 TV 7CH

TV FREQUENCY COVERAGE CONFIRMATION

Frequency display Reading on digtal voltmeter

Confirmation TV 2CH 1.1 ±0.15V

Confirmation TV 13CH 8.0 ±0.4V

Confirmation WEATHER 1CH 3.65 ±0.3V

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Adjustment Location :

L5 : AM Frequency

Coverage Adjustment

CT1 : AM Tracking Adjustment

L4: AM Tracking Adjustment

L2 : FM Tracking Adjustmen

L7 : TV Tracking Adjustment

[MAIN BOARD]

(SIDE A)

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Pin No. Pin name I/O Description

SECTION 4

DIAGRAMS

4-1. EXPLANATION OF ICTERMINALS

IC701TC9329FA-CFX1740 (SYSTEM CONTROL)

1 – 4 COMI-4 O LCD common drive.

5 – 19 S1-15 O LCD segment drive.

20 – 22 K01-03 O Key output.

23 – 26 K1-4 I Key input.

27 VDD – Power supply terminal.

28 BEEP O Beep signal output.

29 FWD/REV CTL O FWD/REV head selection output.

30 BAND1 O Band selection output.

31 BAND2 O Band selection output..

32 AMP CTL O Amplifier B+ switch ON/OFF control.

33 NC – Not used (OPEN).

34 BATT CHECK O Battery voltage check terminal.

35 IF IN 1 I IF input terminal.

36 HOLD SW I Hold switch input.

37 GND – Ground terminal.

38 OSC IN I OSC input from tuner.

39 VDD – Power supply terminal.

40 DO (OT) O Tuner B+ switch ON/OFF contorol.

41 VREG – Capacitor connection terminal.

42 IF REQ O IF request output for tuner.

43 TAPE I Tape power switch input.

44 RADIO ON O Tuner ON/OFF output.

45 LOCAL/DX, O Tuner sensitivity/tape type selection output.

NORM/MET

46 FWD/REV SW I FWD/REV switch input.

47 P-CTL O Power switch ON/OFF output

48 MODEL1 I Distination select terminal.

49 MODEL2 I Distination select terminal.

50 PRE CTL O PRE mute output.

51 MUTE CTL O PRE mute signal output.

52 MB CTL O Megabass control signal output.

53 AVLS CTL O AVSL control signal output.

54 RESET I Reset signal input.

55 X-OUT O System clock output (75kHz).

56 X-IN I System clock input (75kHz).

57 GND – Ground terminal.

58 VDB – Capacitor conection terminal.

59 C1 – Capacitor conection terminal.

60 C2 – Capacitor conection terminal.

61 VEE – Capacitor conection terminal.

62 C3 – Capacitor conection terminal.

63 C4 – Capacitor conection terminal.

64 VLCD – Capacitor conection terminal.

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4-2. BLOCK DIAGRAMS

56 55 28

54 47

19 - 51 - 4

M601

CAPSTAN/

REEL

MOTOR

VCC

AMP CTL

X-IN X-OUT BEEP

MB CTL

AVLS CTL

FWD/REV CTL

MUTE CTL

PRE CTL

S1-15

KO1

KO2

KO3

FWD/REV

TAPE

BATT CHECK

COM1-4

RADIOON

BAND1

BAND2

LOCAL/DX

NORM/MET

IF-REQ

IF IN1

OSC IN

DO(OT)

+VCC

VCC

MPX IN

R-CH

FM IF IN

QUAD

AM IF IN

Q707

Q703

CF1

VREF

START

IN+

VCC

RF VCC

FM-MIX

DET

OUT

3 8

RESET

IC703

SYSTEM

CONTROL

IC701

TV/FM/AM RF AMP

FRONTEND

MPX

IC1

POWER AMP

IC301 (2/2)

PRE AMP

IC301 (1/2)

54 OUT VCC

RF AMP

LOGIC

CIRCUITRY

FEEDBACK

DRIVE

OSC

RF AMP

FM/TV

OSC

FM/TV

MIX

DET

BUFFER SW

MPX

AGC

BST

MUTE

AVSL

Q305

RF & REF

REG

Q302

25 26

12 13

MIX

DC-DC

CONVERTER

Q401

PLL LOW PASS

FILTER

Q701.702

LCD701

LIQUID

CRYSTAL

DISPLAY

KEY

MATRIX

S702-711

OSC

BUFFER

DET

5 10

R-CH

VREF

Q306

+VH R-CH

PW INA

PW NFA

+VCC

BST SW

PW MUTE

PREMUTE

OUTA

OUTC

AGC

R-CH

Q303

D5 J301

HEADPHONE

S302

(FWD/REV)

S301

POWER

R-CH

Q704

INA PRE AMP

PRE OUTA

PRE NFA

VREF

Q201

Q101

Q202

Q102

VREF

Q301

+VCC

REV

FWD

TRACKING

(TV-RF)

TRACKING

L4,CT1

TRACKING

AM FERRITE-ROD

ANNTENNA

(FM-RF)

(FM-OSC)

FREQUENCY

COVERAGE

(AM-OSC)

RV601

TAPE SPEED

CAPSTAN/REEL MOTOR DRIVER

IC601

1/8 OR

1/16

1/2

+VH

AM OSC

AMB/P

AMRF IN

FM/TV OSC

FMRF OUT

FMRF IN

TVRF OUT

TVRF IN

T401

(TV)

D1-1

D1-2

CT1

(FM)

RV301

VOLUME

X701

75kHz

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

1PC, 1.5V

RESET P-CTL

Q705

D701

+VCC

MODE1

MODE2

L-OUT

R-OUT

LPF1

IF REQ

IF COUNT

OSC OUT

HP901

PLAY BACK

HEAD

AM-

MIX

(FM-DISC)

CF-3

JC2

S701

HOLD

OFF

EXCEPT US MODEL

EXCEPT US

MODEL

US MODEL

(LOCAL/DX)

(NORMAL/METAL)

: FM

: AM

: TAPE PLAY

• SIGNAL PATH

• R-ch is omitted due to same as L-ch.

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1010

WM-FS555/FS556

(11)

1-682-795-

(SIDE A)

MAIN BOARD

J301

C721

C405

T401

C503

C311

C304

CF1

RV601

FERRITE–ROD

ANTENNA

RV301

C402

C308

CT1

R403

R104

C602

R609

R11

US,CND

AEP,E

R16

C16

C17

C605

C309

R402

C404

C310

JC2

IC301

R401

R708

C601

C109

IC601

R201

C209

R611

C711

C407

R601

C610

R610

R109

C104

C608

D401

C603

D402

C406

C307

C10

R211

R603

C604

R602

C606

C32

Q401

R704

R209

C204

R705

IC1

S301

(POWER)

R404

C316

R717

D701

R709

C323

Q306

C715

R718

C607

R506

R101

C103

R330

R331 C101

R111

C312

Q705

C330

C403

R310

R204

R306

R305

R12

FB101

FB201

C41

R202

R222

C203

R203

R221

R103

R102

R121

R122

R106

R206

L401

R332

TAP101

JC6

C409

R405

R406

C44

C201

11 15 20

15 16

BLK

RED

WHT

R702

S706

ENTER

R210

R733

Q301

C30

S708

TUNING+

S707

SET

C709

R720

C706

S711

R10

C26

R214

R114

R301

C22

C34

R13

Q302

C29

S702

FM/AM

Q701

C31

C110

C306

S710

PRESET+

Q702

C24

R213

C21

R711

C704

C13

R710

C708

C331

X701

C14

C106

S705

TUNING–

C705

S703

PRESET–

C19

C305

C713

R706

R113

C703

R302

C28 L701

C702

C714

C707

S704

RADIO

OFF

Q305

Q303

C710

C23

R604

R703

R714 CND

R303

C206

C35

C107

R715

17 20 25 30 32

C207

R716

R110

S709

TV/WEATHER

C20

IC701

LCD701

JC1

C210

S302

(FWD/REV)

R605

C15

TH601

WHT

ORG

BLK

RED

S701

Q703

CN101

R732

Q704

R707

R719

C732

C731

R731

IC703

JC701

JC703

JC704

JC702

C701

C301

C325

Q202

Q102

Q101

Q201

R311

FB301

R17

C36

C37

C324

BLK

RED

WHT

R20

R21

C712

JC4

TAP1

TP304

R333

C11

C12

R107

R108

R105

R205

R208

R207

TAP102

TAP103

TAP104

TAP105

TAP106

TAP107

R18

CF3

C322

C108

C208

R701

Q707

H/P BOARD

(11)

1-682-796- 11

(11)

1-682-795-

VOLUME

(SIDE B)

MAIN BOARD

M601

CAPSTAN/REEL

MOTOR

HOLD .

OFF

L-CH

FWD

R-CH

HP901

PLAYBACK

HEAD

L-CH

REV

R-CH

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

1PC, 1.5V

AEP,E

US,AEP,E

AEP,E

US,CND

23 4 5 6 7 89 10

4-3. PRINTED WIRING BOARDS – MAIN SECTION –

Note:

•X: parts extracted from the component side.

•a: Through hole.

•f: internal component.

•: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:

Pattern face side: Parts on the pattern face side seen from the

(Side B) pattern face are indicated.

Parts face side: Parts on the parts face side seen from the

(SideA) parts face are indicated.

Ref. No. Location

zSemiconductor

Location

D401

D402

D701

IC1

IC301

IC601

IC701

IC703

Q101

Q102

Q201

Q202

Q301

Q302

Q303

Q305

Q306

Q401

Q701

Q702

Q703

Q704

Q705

Q707

F-9

F-8

G-3

C-5

B-4

F-3

D-2

B-3

D-7

C-7

C-9

D-9

C-9

D-9

E-9

F-9

D-2

B-4

D-8

E-9

E-7

B-4

C-8

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