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2024年3月21日发(作者：仝蕴美)

WM-FX491/FX491ST/FX493/FX493ST

SERVICE MANUAL

Ver 1.0 2000.01

US Model

WM-FX493/FX493ST

Canadian Model

WM-FX491/FX491ST/FX493ST

AEP Model

E Model

Chinese Model

WM-FX491/FX493

Photo : WM-FX493

Model Name Using Similar Mechanism

Tape Transport Mechanism Type

WM-FX477

MT-WMEX404-147

SPECIFICATIONS

• Frequency range

FM:87.5–108 MHz

AM:530–1710 kHz (US, Canadian, 5E, 6E model)

531–1602 kHz (EXCEPT US, Canadian, 5E, 6E model)

• Power requirements

3 V DC batteries R6 (size AA) x 2

• Dimensions (w/h/d)

Approx. 115.8 x 83.2 x 30.1 mm, incl. projecting parts and

controls

• Mass

Approx. 115 g/Approx. 195 g (incl. a battery and a cassette)

• Supplied accessories

Stereo headphones or earphones with remote control (1)

(FX493/FX493ST)/Stereo headphones or earphones (1)

(FX491/FX491ST)

Design and specifications are subject to change without

notice.

•Abbreviation

5E, 6E:South America

Battery life (approximate hours) (EIAJ*)

Sony alkaline LR6 (SG)Sony R6P (SR)

Tape playback257.5

Radio reception4014

*Measured value by the standard of EIAJ (Electronic

Industries Association of Japan). (Using a Sony HF series

cassette tape)

Note

•The battery life may shorten depending on the operation of

the unit.

RADIO CASSETTE PLAYER

MICROFILM

TABLE OF CONTENTS

Location and Function 3

EMBLY

2-1. Cabinet (Front)

2-2. .

2-3.

2-4. Belt, Motor (Capstan/Reel) (M901)...........................

2-5. “Holder Sub ASSY, Cassette”....................................

MENTS

3-1. 8

3-2. 8

4-1. Explanation of 11

4-2. .13

4-3. Printed 15

4-4. .19

ED VIEWS

5-1. 23

5-2. Mechanism Deck Section (MT-WMEX404-147)....24

ICAL PARTS LIST

...................................25

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.

– 2 –

SECTION 1

GENERAL

LOCATION AND FUNCTION OF CONTROLS

This section is extracted from

instruction manual.

FWD

REV

FX493

Y•x (RADIO

ON/BAND•OFF)

VOL

HOLD

FF/PRESET +

REW/PRESET –

SET

MENUENTER

VOL

FX493

OPEN

MB MODE TAPE AVLSFM MODE

HOLDB

Plug in firmly.

Branchez fermement.

FX491

TUNING+/–

TUNING

x/RADIO OFF

REW

RADIO OFF

PRESET

RADIO ON

FF/PRESET+

RADIO ON /BAND

REW/PRESET–

PRESET

BAND

FX493

FX491

SET

– 3 –

Preparations

To Insert Batteries

1Slide and open the battery compartment lid,

and insert two R6 (size AA) dry batteries

with correct polarity.

Replace the batteries with new ones when " e "

flashes in the display.

Playing a Tape

1If the HOLD function is turned on, slide the

HOLD switch in the opposite direction of

the arrow to unlock the controls.

2Insert a cassette and press MENU

repeatedly to set the cursor to TAPE in the

display. Then press SET to select the tape

type.

No message: normal (TYPE I)

METAL: CrO

(TYPE II) or metal (TYPE IV)

3Press Y on the main unit, or if using the

remote control (FX493 only), press Y

(play)•x (stop).

Adjust the volume with VOL.

When adjusting the volume on the Walkman (FX493

only)

Set the VOL control on the remote control at maximum.

When adjusting the volume on the remote control

(FX493 only)

Set the VOL control on the Walkman slightly above the

appropriate level.

Note on the cassette holder

When opening the cassette holder, press the x (stop)

button and make sure the tape is stopped by checking

through the cassette window, then slide the OPEN

switch.

If the cassette holder is opened before the tape is

stopped, the tape may loosen and be damaged.

Operation on the main unit

Press

Switch playback to

Y (play)during playback

the other side

Stop playback

Operation on the remote control (FX493

only)

Press

Switch playback to

Y•x for 2 seconds or

the other side

more during playback

Stop playback

Y•x once during

playback

Other tape operations

Press

Fast forward*

FF during stop

Rewind*

REW during stop

Play the same side from

REW during playback

the beginning (Auto

Play function)

Play the other side from

FF during playback

the beginning (Skip

Reverse function)

*For FX493 only: If Y•x on the remote control is

pressed during fast forward or rewind, the Walkman

switches to playback.

To select playback mode

Press MENU repeatedly to set the cursor to MODE in

the display.

Then press SET to select the desired mode.

To play

Select

Both sides repeatedly

Both sides once from

the side facing the

cassette holder

Listening to the Radio

1If the HOLD function is turned on, slide the

HOLD switch in the opposite direction of

the arrow to unlock the controls.

2Press RADIO ON/BAND to turn on the

radio.

3Press RADIO ON/BAND repeatedly to

select AM, FM1, FM2 or FM3.

4Press TUNING +/– to tune in to the desired

station.

If you keep pressing TUNING+/– for

a few seconds, the Walkman will start

tuning to the stations automatically.

To turn off the radio

Press x•RADIO OFF.

To improve the broadcast reception

• For FM: Extend the headphones/earphones cord

(antenna) (FX491) or remote control cord (antenna)

(FX493). If the reception is still not good, press

MENU repeatedly to set the cursor to FM MODE in

the display.

• For AM: Reorient the unit itself.

Presetting Radio Stations

You can store radio stations into the unit’s memory.

You can preset up to 32 radio stations, 8 for each

FM1, FM2, FM3 or AM bands.

1Press RADIO ON/BAND to turn on the

radio.

2Press RADIO ON/BAND repeatedly to

select AM, FM1, FM2 or FM3.

3Press ENTER.

The frequency digits and a preset number

flash in the display.

4While the frequency digits and the preset

number are flashing, tune in to a station you

wish to store using TUNING+/–, and select

a preset number using PRESET+/–.

5While the frequency digits and the preset

number are flashing, press ENTER.

Notes

•If you cannot complete step 4 or 5 while the indications

are flashing, repeat from step 3.

•If a station is already stored, the new station replaces

the old one.

To cancel the stored station

Follow the procedure above and in step 3, instead of

tuning in to a station, press and hold TUNING +/– until

“- - - -” is displayed. Press ENTER while “- - - -” is

flashing.

To play the preset radio stations

1Press RADIO ON/BAND to select the band.

2Press PRESET+/–.

To operate from the remote control

(FX493 only)

To turn on the radio, press RADIO ON/BAND•OFF

for more than one second (only while the tape is in

stop mode).

To select the band, press RADIO ON/BAND•OFF

for more than one second while the radio is on.

To tune in or recall a preset station, press PRESET +

or –.

To turn off the radio, press RADIO ON/BAND•OFF.

Using Other Functions

To lock the controls

Set the HOLD switch to the direction of the arrow to

lock the controls.

– 4 –

To emphasize bass sound

Press MENU repeatedly to set the cursor to MB in the

display. Then, press SET to turn MB on. With each

press, the indications change as follows.

MB (MEGA BASS) : emphasizes bass sound

No message: off (normal)

Notes

•If the sound is distorted with the mode “MB”, turn

down the volume of the main unit or select normal

mode.

•Bass emphasis may not show great effect if the volume

is turned up too high.

To protect your hearing—AVLS

(Automatic Volume Limiter System)

function

When you set the AVLS function to active, the

maximum volume is kept down to protect your ears.

Press MENU repeatedly to set the cursor to AVLS in

the display. Then press SET to show “”.

Note

•The AVLS setting will be canceled when you replace

the batteries.

SECTION 2

DISASSEMBLY

The equipment can be removed using the following procedure.

SetCabinet (Front) sub ASSY Main board

Mechanism deckBelt, Motor (Capstan/reel) (M901)

Holder sub ASSY, Cassette

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

2-1. CABINET (FRONT) SUB ASSY

Screws (B1.7x12)

Claws

Center cabinet

OPEN

Claws

Lid, Battery case

Claws

Cabinet (Front) sub ASSY

2-2. MAIN BOARD

Screw

Switch (S601)

Red

White

Orange

Black

Main board

Claws

Remove solder

Head flexible board

Center cabinet

– 5 –

2-3. MECHANISM DECK

Mechanism deck

Center cabinet

Claws

2-4. BELT, MOTOR (CAPSTAN/REEL) (M901)

Screws (M1.4)

Motor (Capstan/reel) (M901)

• How to apply the belt

belt

M901

wheel assy (SP), capstan

belt

– 6 –

2-5. “HOLDER SUB ASSY, CASSETTE”

Move hinge away

from projection

Hinge

Projection

Center cabinet

Hinge

Move hinge away

from projection

Projection

OPEN

Hinge

Spring (lid up)

Holder sub ASSY, Cassette

CAUTIONS DURING ASSEMBLY

1Insert the spring (Lid up) to the slot as shown in the figure.

23 Insert the hinge of the “Holder sub ASSY, Cassette”.

4Close the “Holder sub ASSY, Cassette” then press it.

Holder sub ASSY, Cassette

Spring (Lid up)

Hinge

Center cabinet

– 7 –

SECTION 3

ADJUSTMENTS

3-1. MECHANICAL ADJUSTMENTS

PRECAUTION

3-2. ELECTRICAL ADJUSTMENTS

PRECAUTION

the following parts with a denatured-alcohol-moistened

swab :

playback headpinch roller

capstanrubber belt

etize the playback head with a head demagnetizer.

Do not use a magnetized screwdriver for the adjustments.

measurement and adjustment should be performed with

the rated power supply voltage (2.5 V) unless otherwise noted.

Torque Measurement

Mode

FWD

back tension

REV

back tension

FF, REW

CQ-102RC

CQ-102C

Torque meterMeter reading

20 – 42 g • cm

(0.28 – 0.58 oz• inch)

less than 2 g • cm

(less than 0.027 oz• inch)

20 – 42 g • cm

(0.28 – 0.58 oz• inch)

less than 2 g • cm

(less than 0.027 oz• inch)

more than 60 g • cm

(more than 0.84 oz• inch)

•Supplied voltage : 2.5V.

•Switch and control position

MEGA BASS : OFF

VOLUME control : maximum

AVLS : NORM

TAPE SECTION

Test Tape

Type

WS-48A

0 dB = 0.775V

Signal

3kHz, 0dB

Used for

Tape Speed Adjustment

Procedure :

test tape

WS-48A

(3kHz, 0dB)

set

phones jack (J301)

frequency counter

Ω

CQ-201B

ck 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

ck 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 :

RV601

– 8 –

TUNER SECTION

AM Section

BAND : AM

0 dB = 1µV

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

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

< >: US, Canadian, 5E, 6E model

[ ]: Saudi Arabia model

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1450kHz

AM RF signal

generator

Put the lead-wire

antenna close to

the set.

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

FM Section

BAND : FM

FM RF signal

generator

TP26

0.01

22.5kHz frequency deviation

by 400Hz signal.

Output level :

as low as possible

C31

TP204

TP844

FL1

AM FREQUENCY COVERAGE ADJUSTMENT

Reading on digtal

Adjust partsFrequency display

voltmeter

Adjustment value : 1.7V

L4531kHz < 530kHz>

Standard value : 1.6-1.8V

Confirmation1,710kHzStandard value : 8.8V

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

CT1

621kHz

1,395kHz

< 620kHz>

< 1,400kHz>

[MAIN BOARD]

(Side B)

BT2

FB313

FB312

FB311

TP8

FM FREQUENCY COVERAGE ADJUSTMENT

Reading on digtal

Adjust partsFrequency display

voltmeter

Confirmation

87.5MHz

108MHz

Standard value : 4.3V

Adjustment value : 8.0V

Standard value : 7.9-8.1V

C35

FB2

TP26

R22

S702

ENTER

R10

C10

C34

FB201

TP1

FB101

US,CND,5E,6E

C38

TP21

MODEL

C33

TP2

FB301

C32

C14

C30

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

Confirmation

87.5MHz[87.35MHz]

108MHz[108.25MHz]

C11

•Abbreviation

5E, 6E : South America

Adjustment Location : Main board (See page 10)

R19

R21

level meter

Ω

set

phones jack (J301)

– 9 –

Frequency Coverage Adjustment

Setting :

digital voltmeter

(DC range)

TP781 (VT)

[MAIN BOARD]

(Side B)

C31

TP204

TP844

C35

FB2

S707

FF +

TP809

(GND)

TP809 (GND)

R609

R608

TP129

JC11

R606

RV601

Q603

TP725

R708

TP708

TP745

L70

TP734

R703

S714

C41

R702

R10

C10

C14

C30

S702

ENTER

IC1

R21

C17

S705

SET

C16

R12

TP2

C32

C38

TP21

TP764

C11

TP740

TP770

JC109

TP735

C13

S712

TUNING

C21

TP759

R16

C22

C25

C20

R722

TP736

TP739

R723

R724

TP731

TP730

TP781

(VT)

Adjustment Location :

L4 : AM Frequency Coverage Adjustment

[MAIN BOARD] (SIDE A)

L1 : FM Tracking Adjustment

T1 : AM IF Adjustment

L2 : AM Tracking Adjustment

CT1 : AM Tracking Adjustment

L3 : FM Frequency Coverage Adjustment

– 10 –

SECTION 4

DIAGRAMS

4-1. EXPLANATION OF IC TERMINALS

IC701 TC9327AF-621 (SYSTEM CONTROL/LCD DRIVE)

Pin NameI/OPin Description

1– 4COM1 – 4OLCD driver common output.

5 – 22S1 – 18OLCD driver output.

23MOTOR DIROMotor rotation direction control output (FWD: L, REV: H).

24MOTOR CTLOMotor ON/OFF control output (OFF: L, ON: H).

25MOTOR SPEEDOMotor speed control output (Normally: L, Speed down: H).

26MOTOR BRKOMotor brake control output (Brake OFF: L, Brake ON: H).

27PHOTO CTLOPhoto reflector rotation detection control output.

28DOLBY—Not used (OPEN).

29NC—Not used (OPEN).

30AVLSOAVLS control output (AVLS OFF: L, AVLS IN: H).

31FM MODEOLOCAL/DX control output (DX: L, LOCAL: H) (US, CND, 5E, 6E only).

32TAPE SELECTOTape select control output (Normal: L, CrO2/METAL: H).

33PHOTO INIPhoto reflector rotation detection input.

34 – 37K0 – 3IKey input 0 – 3.

38NC—Not used (OPEN).

39 – 41KO1 – 3IKey input 1 – 3.

42BATT DETIPower supply voltage detection input (A/D input).

43HOLDIHOLD input.

44RM KEY INIRemote control key input.

45AD REFIReference voltage of pin 43 and 44.

46CSOChip select output for EEPROM.

47DATAOData output for EEPROM.

48SCLKOSCLK output for EEPROM.

49BEEPOBEEP output.

50TESTITest mode select terminal (Connect to remote contorol).

51MEGA BASSOMEGA BASS control output (ON: L, OFF: H).

52MUTEOMute signal output (OFF: L, ON: H)

53AMP CTLOPower AMP ON/OFF control output.

54OPENIOPEN switch input.

55REV SWIMechanism deck mode detection switch input (REV ON: H).

56REW SWIMechanism deck mode detection switch input (REW ON: H).

57FF SWIMechanism deck mode detection switch input (FF ON: H).

58FWD SWIMechanism deck mode detection switch input (FWD ON: H).

59BANDOBAND select output (AM: L, FM: input).

60RADIO ONORADIO ON/OFF control output (OFF: L, ON: H).

61IF REQOIF request output (Auto scan: L, Normally: H).

62NC—Not used (OPEN).

63TEST/NC—Not used (OPEN).

64IF INIIF input.

65PRE AMP CTLOPreamp mute signal output.

66D02OVT control signal output.

67HOLD—Fixed at “H” in this set.

68NC—Not used (OPEN).

69GND—Ground.

70VCO FMIVCO (FM) input.

– 11 –

Pin NameI/OPin Description

71VCO AMIVCO (AM) input.

72VDD—Power supply pin.

73RESETIReset input. Connect to VDD.

74XOUTOCrystal oscillator output (75 kHz).

75XINICrystal oscillator input (75 kHz).

76VXT—Stabilized capacitor connection of crystal oscillation power supply.

77VLCD—LCD driver power rising pressure pin.

78, 79C1, 2—LCD driver power rising pressure pin.

80VEE—1.5 V constant voltage power supply for LCD driver.

– 12 –

WM-FX491/FX491ST/FX493/FX493ST

4-2. BLOCK DIAGRAM

•Signal path.•Abbreviation

F: FM

CND:Canadian

f: AM

EA:Saudi Arabia

E: PB

CH: Chinese

9E:Indication of country of origin

5E, 6E:South America

– 13 –– 14 –

WM-FX491/FX491ST/FX493/FX493ST

4-3. PRINTED WIRING BOARDS

Semiconductor

3456

DRY BATTERY

SIZE "AA"

(DESIGNATION R6)

2PCS, 3V

91011121314

1617

1819

Location

Ref. No.

D301

D401

D402

IC1

IC101

IC701

IC702

IC703

Q51

Q52

Q53

Q303

Q304

Q305

Q401

Q603

Q604

Q605

Q606

Q607

Q701

Q702

Q703

Q751

Q752

Location

C-18

C-4

B-19

E-14

D-3

D-9

C-14

B-17

C-15

C-3

B-13

E-4

B-12

B-13

D-14

B-4

C-11

C-12

C-11

E-14

E-7

B-15

B-14

[MAIN BOARD]

(SIDE B)

R609

J301

[MAIN BOARD] (SIDE A)

C31

TP204

TP844

FL1

C35

FB2

S707

TP809

(GND)

R608

TP129

TP760

R752

S715

BAND

RADIO ON

TP752

TP766

JC107

S711

RADIO OFF

JC106

S704

REW–

TP753

TP737

TP104

TP106

TP203

TP727

TP755

TP757

TP758

COM

(RED )

TP103

C305

C312

EXCEPT

E,EA,9E,CH MODEL

R100

E,EA,9E,CH MODEL

J303

DC IN 3V

Q304

FB312

FB311

Q305

Q51

C52

R54

C51

R55

TP201

R711

C608

TP231

TP230

Q604

Q605

TP229

TP843

Q52

TP845

Q53

R52

C53

R751

R753

TP808

C716

X701

Q703

FB313

Q603

Q752

Q751

BT2

R606

RV601

JC110

C710

C610

BT1

R310

R53

TP204

TP205

D301

IC702

R13

R706

C15

TP861

C40

TP839

TP218

C37

C19

R15

C18

C724

C721

R770

C313

C719

C723

C722

C720

R11

R14

EXCEPT US,CND,

5E,6E MODEL

R20

US,CND,

5E,6E MODEL

TP844

TP764

TP740

TP770

C706

C708

L702

TP26

C11

R10

C10

JC109

(WHT)

TP735

(ORG)

(BLK )

TP206

R715

TP840

R754

PH751

TP301

R614

TP228

TP232

TP601

Q606

FERR ITE-ROD

ANTENNA

R22

S702

ENTER

R19

TP5

C23

C24

RV301

VOL

R17

R18

C25

C21

TP759

R16

C22

IC1

R21

C17

C20

S705

SET

C16

R12

C13

S712

TUNING

S709

TUNING

–

REV

S601

REW

FWD

R107

S701

TP102

TP132

HOLD

TP202

TP107

TOFF

TP105

TP101

FWD

JC101

TP825

IC701

R612

TH601

TP823

TP824

R611

IC703

R207

TP130

IC101

TP127

TP826

R610

C29

C311

C26

ND701

LIQUID CRYSTAL

DISPLAY

R722

TP736

TP841

TP781

(VT)

S708

TP724

R403

C404

L401

Q401

C405

T401

C403

R402

TP401

Q701

JC111

C725

CT1

TP12

TP11

R108

TP739

R723

R724

TP731

R728

R305

TP730

R726

TP754

R727

CN303

R761

R705

R700

C701

Q702

TP108

TP741

TP881

2024

Q303

TP116

R729

TP115

TP114

TP113

TP121

TP123

R707

TP124

TP122

(11)

M901

REEL/CAPSTAN

MOTOR

COM

C107

C705

TP866

TP852

C704

R704

D402

C402

C707

TP854

R759

1-675-208-

(11)

TP117

TP119

TP112

1-675-208-

Note:

•X: parts extracted from the component side.

•: Through hole.

•b: 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

(Side A)parts face are indicated.

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

S301

(OPEN DET)

L-CH

FWD

HP901

PLAYBACK

HEAD

R-CH

REV

L-CH

– 15 –– 16 –– 17 –

C34

FB201

TP1

FB101

US,CND,5E,6E

TP21

MODEL

TP2

C33

FB301

C32

C14

C30

R708

TP725

TP708

TP745

L701

TP734

C702

R703

S714

C41

R702

C36

TP834

JC102

R771

TP835

JC103

TP215

C28

TP25

TP859

TP212

TP211

TP837

TP836

– 18 –

4-4. SCHEMATIC DIAGRAM

Refer to page 22 for IC Block Diagram.

WM-FX491/FX491ST/FX493/FX493ST

Waveforms

290 mVp-p

75 kHz

IC701 uf

XOUT

VOLT/DIV : 50 mV AC

TIME/DIV : 5 µsec

3.2 Vp-p

369 nsec

Q401 C

VOLT/DIV : 1 V AC

TIME/DIV : 0.1 msec

Note:

•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

W or less unless otherwise

specified.

•: internal component.

•U: B+ Line.

•H: adjustment for repair.

•Power voltage is dc 3V and fed with regulated dc power

supply from battery terminal.

•Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark: FM (RADIO SECTION)

PLAY (TAPE SECTION)

(): AM

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

Voltage variations may be noted due to normal produc-

tion tolerances.

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

•Circled numbers refer to waveforms.

•Signal path.

F: FM

f: AM

E: PB

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

– 19 –– 20 –– 21 –

SECTION 5

EXPLODED VIEWS

IC Block Diagram.

IC1 TA2104AFN (EL)

24232221201918

RED

OSC

BUFF

VCO

BUFF

DIVIDE

DECOOE

BUFF

LEVEL

DET

1/8

DET

ST/MO

FM/AM

MIX

AMIF

FMIF

AGC

MUTE

DNTT

NDC

– 22 –

NOTE :

•-XX, -X mean standardized parts, so they•The mechanical parts with no reference

•Abbreviation

may have some difference from the originalnumber in the exploded views are not

CND:Canadian

ed.

FR:French

•Items marked “ * ”are not stocked since they•Hardware (# mark) list and accessories and

EA:Saudi Arabia

are seldom required for routine service. Somepacking materials are given in the last of this

CH: Chinese

delay should be anticipated when orderingparts list.

E:Indication of country of origin

these items.

9E:No Indication of country of origin

5E, 6E:South America

5-1. CABINET SECTION

CEV:Ukraine, Hungary, Czech

MT-WMEX404-147

ND701

Ref. ptionRemarkRef. ptionRemark

13-039-652-01LID,BATTERY CASE (FX491,FX491ST)17X-3378-291-1HOLDER SUB ASSY, CASSETTE

13-039-652-11LID,BATTERY CASE (FX493,FX493ST)(FX493:US,5E,6E,FX493ST)

23-039-658-01RUBBER (B), BUTTON17X-3378-292-1HOLDER SUB ASSY, CASSETTE

3X-3378-293-1CABINET (FRONT) SUB ASSY(FX491,FX491ST)(FX493:AEP,CEV,FR,9E,EA,CH)

3X-3378-294-1CABINET (FRONT) SUB ASSY(FX493,FX493ST)183-019-514-21KNOB(OPEN)

193-039-651-01CENTER CABINET (US,CND,5E,6E)

43-039-657-01RUBBER (A), BUTTON193-039-651-11CENTER CABINET (E,EA,CH)

53-704-197-11LOCK,SERRAT IB

*63-039-660-01HOLDER (LCD)193-039-651-21CENTER CABINET (AEP,CEV,FR)

73-040-176-01RUBBER, CONDUCTIVE193-039-651-31CENTER CABINET (9E)

83-022-857-01SPRING (OPEN)203-318-203-51SCREW (B1.7X12), TAPPING

213-040-144-01SPRING (CASSETTE)

93-022-856-01SPRING (KNOB), TENSION233-020-511-01TERMINAL (+), BATTERY

103-704-197-91SCREW (M1.4X1.8), LOCKING

113-019-421-01LEVER, OPEN24A-3021-309-AMAIN BOARD, COMPLETE (US,CND)

123-019-422-01JOINT24A-3021-310-AMAIN BOARD, COMPLETE (AEP,CEV)

133-349-825-31SCREW24A-3021-311-AMAIN BOARD, COMPLETE (E,9E,EA,CH)

24A-3021-312-AMAIN BOARD, COMPLETE (5E,6E)

143-318-382-61SCREW (1.7X2.5), TAPPING24A-3021-313-AMAIN BOARD, COMPLETE (FR)

153-039-661-01LOCKER (OPEN)

163-025-276-01SPRING (LID UP)253-020-512-01TERMINAL (-), BATTERY

17X-3378-289-1HOLDER SUB ASSY, CASSETTEL21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

(FX491:CND,5E,6E,FX491ST)ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

17X-3378-290-1HOLDER SUB ASSY, CASSETTE

(FX491:AEP,CEV,FR,E,9E,CH)

– 23 –

5-2. MECHANISM DECK SECTION

(MT-WMEX404-147)

HP901

M901

Ref. ptionRemarkRef. ptionRemark

51X-3375-020-1PINCH LEVER (N-F) ASSY633-703-816-31SCREW (M1.4), SPECIAL HEAD

52X-3372-619-1WHEEL ASSY (SP), CAPSTAN64X-3375-021-1PINCH LEVER (R-F) ASSY

533-354-868-01BELT653-703-816-73SCREW (M1.4), SPECIAL HEAD

543-021-950-01GEAR (DF)

553-021-982-01SPRING (MODE), COMPRESSION663-921-797-01WASHER

673-921-003-01BEARING

56X-3375-024-1CLUTCH ASSY (F)683-022-100-01SPRING (B.T.), COMPRESSION

573-021-951-01GEAR (CAM)693-024-223-01GEAR (REEL-2)

583-348-953-21WASHER70X-3375-268-1GEAR (AF-SV) ASSY

593-021-979-01SPRING (UDF), COMPRESSION

603-021-949-01GEAR (BF)713-034-685-01WASHER (1.03-3.0)

HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)

61X-3375-022-1CHASSIS ASSY (F)M9011-763-073-11MOTOR, DC (CAPSTAN/REEL)

623-021-974-03SPRING (HEAD BASE)(INCLUDING PULLEY)

– 24 –

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.

•RESISTORS

All resistors are in ohms

METAL : Metal-film resistor

METAL OXIDE :Metal oxide-film resistor

•SEMICONDUCTORS

In each case, u : µ, for example :

uA.... : µA.... , : µPA....

: µPB.... , : µPC....

: µPD....

•CAPACITORS

uF : µF

•COILS

uH : µH

When indicating parts by reference num-

ber, please include the board.

MAIN

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

F : nonflammable

•Items marked “ * ”are not stocked since

they are seldom required for routine service.

Some delay should be anticipated when

ordering these items.

Ref. ptionRemarkRef. No.

A-3021-309-AMAIN BOARD, COMPLETE (US,CND)

C28

A-3021-310-AMAIN BOARD, COMPLETE (AEP,CEV)

C29

A-3021-311-AMAIN BOARD, COMPLETE (E,EA,9E,CH)

A-3021-312-AMAIN BOARD, COMPLETE (5E,6E)

C30

A-3021-313-AMAIN BOARD, COMPLETE (FR)

C31

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

C32

C33

3-020-511-01TERMINAL (+), BATTERY

3-020-512-01TERMINAL (-), BATTERY

C34

*3-039-660-01HOLDER (LCD)

3-040-176-01RUBBER, CONDUCTIVE

C35

C36

< CAPACITOR >

C37

C40

C11-115-416-11CERAMIC CHIP1000PF5%25V

C41

C21-162-959-11CERAMIC CHIP330PF5%50V

C31-162-995-11CERAMIC CHIP0.022uF50V

C51

C41-162-907-11CERAMIC CHIP2PF0.25PF50V

C52

C51-162-995-11CERAMIC CHIP0.022uF50V

C53

C107

C61-164-156-11CERAMIC CHIP0.1uF25V

C205

C71-162-919-11CERAMIC CHIP22PF5%50V

C81-162-959-11CERAMIC CHIP330PF5%50V

C207

C91-163-033-91CERAMIC CHIP0.022uF50V

C305

C101-115-416-11CERAMIC CHIP1000PF5%25V

C311

C312

C111-115-416-11CERAMIC CHIP1000PF5%25V

C313

C121-162-915-11CERAMIC CHIP10PF0.5PF50V

C131-162-970-11CERAMIC CHIP0.01uF10%25V

C401

C141-162-909-11CERAMIC CHIP4PF0.25PF50V

C402

C151-162-970-11CERAMIC CHIP0.01uF10%25V

C403

C404

C161-115-416-11CERAMIC CHIP1000PF5%25V

C405

C171-115-156-11CERAMIC CHIP1uF10V

C181-107-826-91CERAMIC CHIP0.1uF10%16V

C406

C191-109-982-11CERAMIC CHIP1uF10%10V

C407

C201-164-156-11CERAMIC CHIP0.1uF25VC608

C610

C211-162-970-11CERAMIC CHIP0.01uF10%25V

C701

(EXCEPT US,CND,5E,6E)

C211-164-245-11CERAMIC CHIP0.015uF10%25VC702

(US,CND,5E,6E)C704

C221-162-970-11CERAMIC CHIP0.01uF10%25VC705

(EXCEPT US,CND,5E,6E)C706

C221-164-245-11CERAMIC CHIP0.015uF10%25VC707

(US,CND,5E,6E)

C231-125-837-91CERAMIC CHIP1uF10%6.3VC708

C709

C241-125-837-91CERAMIC CHIP1uF10%6.3VC710

C251-109-935-11TANTAL. CHIP4.7uF20%4VC712

C261-162-974-11CERAMIC CHIP0.01uF50VC713

– 25 –

Part ption

1-162-974-11CERAMIC CHIP

1-115-467-11CERAMIC CHIP

1-163-275-11CERAMIC CHIP

1-113-988-11TANTAL. CHIP

1-164-315-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-164-315-11CERAMIC CHIP

1-162-970-11CERAMIC CHIP

1-162-921-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-162-964-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-970-11CERAMIC CHIP

1-115-156-11CERAMIC CHIP

1-124-433-00ELECT

1-107-826-91CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-164-505-11CERAMIC CHIP

1-162-915-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-974-11CERAMIC CHIP

1-107-826-91CERAMIC CHIP

1-124-434-00ELECT

1-162-974-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-964-11CERAMIC CHIP

1-115-467-11CERAMIC CHIP

1-162-927-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-162-927-11CERAMIC CHIP

1-162-974-11CERAMIC CHIP

1-162-917-11CERAMIC CHIP

Remark

0.01uF50V

0.22uF10%10V

0.001uF5%50V

68uF20%4V

470PF5%50V

1000PF5%25V

(US,CND,5E,6E)

470PF5%50V

0.01uF10%25V

33PF5%50V

1000PF5%25V

0.001uF10%50V

22uF20%4V

0.01uF10%25V

1uF10V

100uF20%4V

0.1uF10%16V

1000PF5%25V

2.2uF16V

10PF0.5PF50V

22uF20% 4V

0.01uF50V

0.1uF10%16V

220uF20%4V

0.01uF50V

22uF20%4V

0.001uF10%50V

0.22uF10%10V

100PF5%50V

1000PF5%25V

100PF5%50V

0.01uF50V

15PF5%50V

MAIN

Ref. ptionRemarkRef. No.

C7141-115-156-11CERAMIC CHIP1uF10V

C7151-164-156-11CERAMIC CHIP0.1uF25V

C7161-164-156-11CERAMIC CHIP0.1uF25V

JC101

C7171-164-156-11CERAMIC CHIP0.1uF25V

JC102

C7181-115-416-11CERAMIC CHIP1000PF5%25VJC103

JC106

C7191-115-416-11CERAMIC CHIP1000PF5%25V

JC107

C7201-115-416-11CERAMIC CHIP1000PF5%25V

C7211-115-416-11CERAMIC CHIP1000PF5%25V

JC108

C7221-115-416-11CERAMIC CHIP1000PF5%25V

JC109

C7231-115-416-11CERAMIC CHIP1000PF5%25V

JC110

JC111

C7241-115-416-11CERAMIC CHIP1000PF5%25V

C7251-115-416-11CERAMIC CHIP1000PF5%25V

< FILTER >L1

CF11-781-271-11FILTER, CERAMIC

CF21-781-152-11FILTER, CERAMICL4

L401

< CONNECTOR >

L701

CN3031-750-346-21CONNECTOR, FFC/EPC (ZIF) 6P

L702

< TRIMMER >

CT11-141-463-11CAP, ADJ 10PF (AM TRACKING)

ND701

< DIODE >

D18-719-053-30DIODE MA2S357-(TX). SOPH751

D28-719-072-58DIODE SVC347-TL

D38-719-053-30DIODE MA2S357-(TX). SO

D3018-719-017-58DIODE MA8068

D4018-719-073-01DIODE MA111-(K8).S0

Q51

D4028-719-056-89DIODE UDZ-TE-17-12B

Q52

Q53

< FERRITE BEAD >

Q303

FB21-500-113-22FERRITEQ304

FB1011-500-113-22FERRITE

Q305

FB2011-500-113-22FERRITE

Q401

FB3011-500-113-22FERRITE

Q603

FB3111-500-113-22FERRITE

Q604

FB3121-500-113-22FERRITE

Q605

FB3131-500-113-22FERRITE

Q606

Q607

< FILTER >

Q701

Q702

FL11-236-711-21FILTER, BAND PASS

Q703

< IC >

Q751

Q752

IC18-759-564-18IC TA2104AFN(EL)

IC1011-418-581-11EG UNIT (WFX)

IC7018-759-653-11IC TC9327AF-621

IC7028-759-457-70IC XC62RP1602MRR1

IC7038-759-457-68IC AK93C45AV-LR2

< JACK >R4

J3011-785-164-11JACK (i)

J3031-750-061-11JACK,DC(POLARITY UNIFIED TYPE)R6

(DC IN 3V) (E,EA,9E,CH)R7

R10

– 26 –

Part ptionRemark

< JUMPER RESISTOR >

1-216-296-00METAL CHIP05%1/8W

1-216-864-11METAL CHIP05%1/16W

1-216-296-00METAL CHIP05%1/8W

1-216-864-11METAL CHIP05%1/16W

1-216-295-00METAL CHIP05%1/10W

1-216-296-00METAL CHIP05%1/8W

< COIL >

1-416-596-11COIL (RF) (FM TRACKING)

1-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

1-416-595-11COIL (OSC) (FM FREQUENCY COVERAGE)

1-415-962-11COIL (OSC) (AM FREQUENCY COVERAGE)

1-412-991-11INDUCTOR10uH

1-412-995-21INDUCTOR22uH

1-412-973-11INDUCTOR0.33uH

1-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

< PHOTO INTERRUPTER >

8-749-016-61REFLECTOR NJL5197K-W-F20(TE1)

< TRANSISTOR >

8-729-602-21TRANSISTOR 2SC4154-F (US,CND,5E,6E)

8-729-420-24TRANSISTOR 2SB1218A-QRS

8-729-402-13TRANSISTOR XN1501

8-729-015-76TRANSISTOR UN5211

8-729-402-13TRANSISTOR XN1501

8-729-807-86TRANSISTOR 2SB1295-UL5

8-729-015-76TRANSISTOR UN5211

8-729-602-21TRANSISTOR 2SC4154-F

8-729-421-26TRANSISTOR UN5216

8-729-046-89TRANSISTOR 2SB970-S(TX).S0

8-729-421-26TRANSISTOR UN5216

8-729-602-21TRANSISTOR 2SC4154-F

8-729-231-96TRANSISTOR 2SK880GR-TE85L

8-729-423-55TRANSISTOR 2SC3931-D

8-729-421-26TRANSISTOR UN5216

8-729-420-24TRANSISTOR 2SB1218A-QRS

< RESISTOR >

1-216-853-11METAL CHIP470K5%1/16W

1-216-821-11METAL CHIP1K5%1/16W

1-216-853-11METAL CHIP470K5%1/16W

1-216-864-11METAL CHIP05%1/16W

1-216-817-11METAL CHIP4705%1/16W

1-216-827-11METAL CHIP3.3K5%1/16W

Ref. ption

R111-216-296-91SHORT

R121-216-833-91RES-CHIP

R131-216-821-11METAL CHIP

R141-216-845-11METAL CHIP

R151-216-827-11METAL CHIP

R161-216-821-11METAL CHIP

R171-216-839-11METAL CHIP

R181-216-839-11METAL CHIP

R191-216-815-11METAL CHIP

R201-216-821-11METAL CHIP

R211-216-864-11METAL CHIP

R221-216-864-11METAL CHIP

R521-216-819-11METAL CHIP

R531-216-829-11METAL CHIP

R541-216-847-11METAL CHIP

R551-216-833-91RES-CHIP

R1001-216-864-11METAL CHIP

R1071-216-791-11METAL CHIP

R1071-216-797-11METAL CHIP

R1071-216-811-11METAL CHIP

R1081-216-811-11METAL CHIP

R1081-216-817-11METAL CHIP

R1091-216-825-11METAL CHIP

R2071-216-791-11METAL CHIP

R2071-216-797-11METAL CHIP

R2071-216-811-11METAL CHIP

R2081-216-811-11METAL CHIP

R2081-216-817-11METAL CHIP

R2091-216-825-11METAL CHIP

R3041-216-821-11METAL CHIP

R3051-216-821-11METAL CHIP

R3101-216-821-11METAL CHIP

R4011-216-845-11METAL CHIP

R4021-216-821-11METAL CHIP

R4031-216-845-11METAL CHIP

R4041-216-813-11METAL CHIP

R6061-216-845-11METAL CHIP

R6081-216-827-11METAL CHIP

R6091-216-833-91RES-CHIP

R6101-216-821-11METAL CHIP

R6111-216-864-11METAL CHIP

R6121-216-841-11METAL CHIP

R6131-216-817-11METAL CHIP

R6141-216-817-11METAL CHIP

R6151-216-817-11METAL CHIP

R7001-216-829-11METAL CHIP

R7011-216-835-11METAL CHIP

MAIN

RemarkRef. ptionRemark

0R7021-216-841-11METAL CHIP47K5%1/16W

10K5%1/16WR7031-216-805-11METAL CHIP475%1/16W

1K5%1/16WR7041-216-835-11METAL CHIP15K5%1/16W

100K5%1/16W

(EXCEPT US,CND,5E,6E)R7051-216-837-11METAL CHIP22K5%1/16W

3.3K5%1/16WR7061-216-825-11METAL CHIP2.2K5%1/16W

R7071-216-864-11METAL CHIP05%1/16W

1K5%1/16WR7081-216-845-11METAL CHIP100K5%1/16W

33K5%1/16WR7111-216-821-11METAL CHIP1K5%1/16W

33K5%1/16W

3305%1/16WR7151-216-853-11METAL CHIP470K5%1/16W

1K5%1/16WR7221-216-821-11METAL CHIP1K5%1/16W

(US,CND,5E,6E)R7231-216-821-11METAL CHIP1K5%1/16W

R7241-216-821-11METAL CHIP1K5%1/16W

05%1/16WR7261-216-833-91RES-CHIP10K5%1/16W

05%1/16W

6805%1/16WR7271-216-833-91RES-CHIP10K5%1/16W

4.7K5%1/16WR7281-216-833-91RES-CHIP10K5%1/16W

150K5%1/16WR7291-216-833-91RES-CHIP10K5%1/16W

R7511-216-817-11METAL CHIP4705%1/16W

10K5%1/16WR7521-216-851-11METAL CHIP330K5%1/16W

05%1/16W

(EXCEPT E,EA,9E,CH)R7531-216-853-11METAL CHIP470K5%1/16W

3.35%1/16WR7541-216-821-11METAL CHIP1K5%1/16W

(US,CND)R7551-216-853-11METAL CHIP470K5%1/16W

105%1/16WR7561-216-853-11METAL CHIP470K5%1/16W

(EXCEPT US,CND,FR)R7571-216-853-11METAL CHIP470K5%1/16W

1505%1/16W

(FR)R7581-216-853-11METAL CHIP470K5%1/16W

R7591-216-845-11METAL CHIP100K5%1/16W

1505%1/16WR7611-216-833-91RES-CHIP10K5%1/16W

(EXCEPT US,CND,FR)R7701-216-833-91RES-CHIP10K5%1/16W

4705%1/16WR7711-218-871-11METAL CHIP10K0.5%1/16W

(US,CND,FR)

2.2K5%1/16W

< VARIABLE RESISTOR >

3.35%1/16W

(US,CND)

RV3011-225-362-11RES, VAR, CARBON (w VOL)

105%1/16W

RV6011-241-784-11RES, ADJ, CARBON 5K (TAPE SPEED)

(EXCEPT US,CND,FR)

< SWITCH >

1505%1/16W

(FR)

S3011-771-040-21SWITCH, PUSH (OPEN DET)

1505%1/16W

S6011-771-598-11SWITCH, SLIDE (RVS/REW/FF/FWD)

(EXCEPT US,CND,FR)

S7011-572-922-11SWITCH, SLIDE (HOLD .)

4705%1/16W

(US,CND,FR)

< TRANSFORMER >

2.2K5%1/16W

1K5%1/16W

T11-416-594-11TRANSFORMER, IF (AM IF)

T4011-449-021-21TRANSFORMER, DC/DC CONVERTER

1K5%1/16W

< THERMISTOR >

100K5%1/16W

1K5%1/16W

TH6011-810-794-11THERMISTOR, POSITIVE

100K5%1/16W

< VIBRATOR >

2205%1/16W

100K5%1/16WX11-781-367-21FILTER, CERAMIC(DISCRIMINATOR)

3.3K5%1/16W

X7011-577-262-11VIBRATOR, CRYSTAL (75kHz)

10K5%1/16W

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

1K5%1/16W

MISCELLANEOUS

05%1/16W

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

47K5%1/16W

4705%1/16W

HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)

4705%1/16W

L21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

4705%1/16WM9011-763-073-11MOTOR, DC (CAPSTAN/REEL)

(INCLUDING PULLEY)

4.7K5%1/16W

ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

15K5%1/16W**************************************************************

– 27 –

WM-FX491/FX491ST/FX493/FX493ST

Ref. ptionRemark

ACCESSORIES & PACKING MATERIALS

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

1-505-521-11HEADPHONE (MDR-023) (FX491:CND)

1-505-521-21HEADPHONE (MDR-023SP) (FX493:US)

3-042-385-01CASE, CARRYING (FX491:CND,5E,6E,FX491ST/

FX493:US,5E,6E,FX493ST)

3-044-230-01CLIP, BELT (FX491:CND,5E,6E,FX491ST/

FX493:US,5E,6E,FX493ST)

3-318-203-71SCREW (B1.7X5), TAPPING (FX493,FX493ST)

3-867-999-11MANUAL, INSTRUCTION

(FX491:AEP,FR/FX493:AEP,FR)

(ENGLISH,FRENCH,GERMAN,ITALIAN)

3-867-999-21MANUAL, INSTRUCTION

(FX491:AEP/FX493:AEP)

(SPANISH,PORTUGUESE,DUTCH,SWEDISH)

3-867-999-31MANUAL, INSTRUCTION

(FX491:CEV/FX493:CEV)

(ENGLISH,HUNGARIAN,CZECH,RUSSIAN)

3-867-999-41MANUAL, INSTRUCTION

(FX491:CEV/FX493:CEV)

(POLISH,GREEK,TURKISH,SLOVAKIAN)

3-867-999-51MANUAL, INSTRUCTION

(FX491:5E,6E/FX493:US,5E,6E/FX493ST:US)

(ENGLISH,SPANISH,PORTUGUESE)

3-867-999-61MANUAL, INSTRUCTION

(FX491:CND,FX491ST/FX493:EA/

FX493ST:CND)(ENGLISH,FRENCH,ARABIC)

3-867-999-71MANUAL, INSTRUCTION (FX491:E)

(ENGLISH,TRADITIONAL,CHINESE,KOREAN)

3-867-999-81MANUAL, INSTRUCTION(FX491:9E/FX493:9E)

(ENGLISH,TRADITIONAL,CHINESE,KOREAN)

3-867-999-91MANUAL, INSTRUCTION

(FX491:AEP,CH/FX493:AEP,CH)

(ENGLISH,FINNISH,SIMPLIFIED CHINESE)

8-953-130-90HEADPHONE MDR-E805LP

(FX491:AEP,CEV,FR,E,5E,6E,9E,CH)

8-953-273-83RECEIVER,EAR MDR-G051LP (FX491ST)

8-953-304-90RECEIVER MDR-E805SP

(FX493:AEP,CEV,FR,5E,6E,9E,EA,CH)

8-953-774-90RECEIVER,EAR MDR-G051SP (FX493ST)

A-3052-171-AREMOTE CONTROL ASSY (FX493,FX493ST)

Sony Corporation

9-927-641-11

Personal Audio Division Company

– 28 –

2000A0278-1

Published by General Engineering Dept.

2024年3月21日发(作者：仝蕴美)

WM-FX491/FX491ST/FX493/FX493ST

SERVICE MANUAL

Ver 1.0 2000.01

US Model

WM-FX493/FX493ST

Canadian Model

WM-FX491/FX491ST/FX493ST

AEP Model

E Model

Chinese Model

WM-FX491/FX493

Photo : WM-FX493

Model Name Using Similar Mechanism

Tape Transport Mechanism Type

WM-FX477

MT-WMEX404-147

SPECIFICATIONS

• Frequency range

FM:87.5–108 MHz

AM:530–1710 kHz (US, Canadian, 5E, 6E model)

531–1602 kHz (EXCEPT US, Canadian, 5E, 6E model)

• Power requirements

3 V DC batteries R6 (size AA) x 2

• Dimensions (w/h/d)

Approx. 115.8 x 83.2 x 30.1 mm, incl. projecting parts and

controls

• Mass

Approx. 115 g/Approx. 195 g (incl. a battery and a cassette)

• Supplied accessories

Stereo headphones or earphones with remote control (1)

(FX493/FX493ST)/Stereo headphones or earphones (1)

(FX491/FX491ST)

Design and specifications are subject to change without

notice.

•Abbreviation

5E, 6E:South America

Battery life (approximate hours) (EIAJ*)

Sony alkaline LR6 (SG)Sony R6P (SR)

Tape playback257.5

Radio reception4014

*Measured value by the standard of EIAJ (Electronic

Industries Association of Japan). (Using a Sony HF series

cassette tape)

Note

•The battery life may shorten depending on the operation of

the unit.

RADIO CASSETTE PLAYER

MICROFILM

TABLE OF CONTENTS

Location and Function 3

EMBLY

2-1. Cabinet (Front)

2-2. .

2-3.

2-4. Belt, Motor (Capstan/Reel) (M901)...........................

2-5. “Holder Sub ASSY, Cassette”....................................

MENTS

3-1. 8

3-2. 8

4-1. Explanation of 11

4-2. .13

4-3. Printed 15

4-4. .19

ED VIEWS

5-1. 23

5-2. Mechanism Deck Section (MT-WMEX404-147)....24

ICAL PARTS LIST

...................................25

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.

– 2 –

SECTION 1

GENERAL

LOCATION AND FUNCTION OF CONTROLS

This section is extracted from

instruction manual.

FWD

REV

FX493

Y•x (RADIO

ON/BAND•OFF)

VOL

HOLD

FF/PRESET +

REW/PRESET –

SET

MENUENTER

VOL

FX493

OPEN

MB MODE TAPE AVLSFM MODE

HOLDB

Plug in firmly.

Branchez fermement.

FX491

TUNING+/–

TUNING

x/RADIO OFF

REW

RADIO OFF

PRESET

RADIO ON

FF/PRESET+

RADIO ON /BAND

REW/PRESET–

PRESET

BAND

FX493

FX491

SET

– 3 –

Preparations

To Insert Batteries

1Slide and open the battery compartment lid,

and insert two R6 (size AA) dry batteries

with correct polarity.

Replace the batteries with new ones when " e "

flashes in the display.

Playing a Tape

1If the HOLD function is turned on, slide the

HOLD switch in the opposite direction of

the arrow to unlock the controls.

2Insert a cassette and press MENU

repeatedly to set the cursor to TAPE in the

display. Then press SET to select the tape

type.

No message: normal (TYPE I)

METAL: CrO

(TYPE II) or metal (TYPE IV)

3Press Y on the main unit, or if using the

remote control (FX493 only), press Y

(play)•x (stop).

Adjust the volume with VOL.

When adjusting the volume on the Walkman (FX493

only)

Set the VOL control on the remote control at maximum.

When adjusting the volume on the remote control

(FX493 only)

Set the VOL control on the Walkman slightly above the

appropriate level.

Note on the cassette holder

When opening the cassette holder, press the x (stop)

button and make sure the tape is stopped by checking

through the cassette window, then slide the OPEN

switch.

If the cassette holder is opened before the tape is

stopped, the tape may loosen and be damaged.

Operation on the main unit

Press

Switch playback to

Y (play)during playback

the other side

Stop playback

Operation on the remote control (FX493

only)

Press

Switch playback to

Y•x for 2 seconds or

the other side

more during playback

Stop playback

Y•x once during

playback

Other tape operations

Press

Fast forward*

FF during stop

Rewind*

REW during stop

Play the same side from

REW during playback

the beginning (Auto

Play function)

Play the other side from

FF during playback

the beginning (Skip

Reverse function)

*For FX493 only: If Y•x on the remote control is

pressed during fast forward or rewind, the Walkman

switches to playback.

To select playback mode

Press MENU repeatedly to set the cursor to MODE in

the display.

Then press SET to select the desired mode.

To play

Select

Both sides repeatedly

Both sides once from

the side facing the

cassette holder

Listening to the Radio

1If the HOLD function is turned on, slide the

HOLD switch in the opposite direction of

the arrow to unlock the controls.

2Press RADIO ON/BAND to turn on the

radio.

3Press RADIO ON/BAND repeatedly to

select AM, FM1, FM2 or FM3.

4Press TUNING +/– to tune in to the desired

station.

If you keep pressing TUNING+/– for

a few seconds, the Walkman will start

tuning to the stations automatically.

To turn off the radio

Press x•RADIO OFF.

To improve the broadcast reception

• For FM: Extend the headphones/earphones cord

(antenna) (FX491) or remote control cord (antenna)

(FX493). If the reception is still not good, press

MENU repeatedly to set the cursor to FM MODE in

the display.

• For AM: Reorient the unit itself.

Presetting Radio Stations

You can store radio stations into the unit’s memory.

You can preset up to 32 radio stations, 8 for each

FM1, FM2, FM3 or AM bands.

1Press RADIO ON/BAND to turn on the

radio.

2Press RADIO ON/BAND repeatedly to

select AM, FM1, FM2 or FM3.

3Press ENTER.

The frequency digits and a preset number

flash in the display.

4While the frequency digits and the preset

number are flashing, tune in to a station you

wish to store using TUNING+/–, and select

a preset number using PRESET+/–.

5While the frequency digits and the preset

number are flashing, press ENTER.

Notes

•If you cannot complete step 4 or 5 while the indications

are flashing, repeat from step 3.

•If a station is already stored, the new station replaces

the old one.

To cancel the stored station

Follow the procedure above and in step 3, instead of

tuning in to a station, press and hold TUNING +/– until

“- - - -” is displayed. Press ENTER while “- - - -” is

flashing.

To play the preset radio stations

1Press RADIO ON/BAND to select the band.

2Press PRESET+/–.

To operate from the remote control

(FX493 only)

To turn on the radio, press RADIO ON/BAND•OFF

for more than one second (only while the tape is in

stop mode).

To select the band, press RADIO ON/BAND•OFF

for more than one second while the radio is on.

To tune in or recall a preset station, press PRESET +

or –.

To turn off the radio, press RADIO ON/BAND•OFF.

Using Other Functions

To lock the controls

Set the HOLD switch to the direction of the arrow to

lock the controls.

– 4 –

To emphasize bass sound

Press MENU repeatedly to set the cursor to MB in the

display. Then, press SET to turn MB on. With each

press, the indications change as follows.

MB (MEGA BASS) : emphasizes bass sound

No message: off (normal)

Notes

•If the sound is distorted with the mode “MB”, turn

down the volume of the main unit or select normal

mode.

•Bass emphasis may not show great effect if the volume

is turned up too high.

To protect your hearing—AVLS

(Automatic Volume Limiter System)

function

When you set the AVLS function to active, the

maximum volume is kept down to protect your ears.

Press MENU repeatedly to set the cursor to AVLS in

the display. Then press SET to show “”.

Note

•The AVLS setting will be canceled when you replace

the batteries.

SECTION 2

DISASSEMBLY

The equipment can be removed using the following procedure.

SetCabinet (Front) sub ASSY Main board

Mechanism deckBelt, Motor (Capstan/reel) (M901)

Holder sub ASSY, Cassette

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

2-1. CABINET (FRONT) SUB ASSY

Screws (B1.7x12)

Claws

Center cabinet

OPEN

Claws

Lid, Battery case

Claws

Cabinet (Front) sub ASSY

2-2. MAIN BOARD

Screw

Switch (S601)

Red

White

Orange

Black

Main board

Claws

Remove solder

Head flexible board

Center cabinet

– 5 –

2-3. MECHANISM DECK

Mechanism deck

Center cabinet

Claws

2-4. BELT, MOTOR (CAPSTAN/REEL) (M901)

Screws (M1.4)

Motor (Capstan/reel) (M901)

• How to apply the belt

belt

M901

wheel assy (SP), capstan

belt

– 6 –

2-5. “HOLDER SUB ASSY, CASSETTE”

Move hinge away

from projection

Hinge

Projection

Center cabinet

Hinge

Move hinge away

from projection

Projection

OPEN

Hinge

Spring (lid up)

Holder sub ASSY, Cassette

CAUTIONS DURING ASSEMBLY

1Insert the spring (Lid up) to the slot as shown in the figure.

23 Insert the hinge of the “Holder sub ASSY, Cassette”.

4Close the “Holder sub ASSY, Cassette” then press it.

Holder sub ASSY, Cassette

Spring (Lid up)

Hinge

Center cabinet

– 7 –

SECTION 3

ADJUSTMENTS

3-1. MECHANICAL ADJUSTMENTS

PRECAUTION

3-2. ELECTRICAL ADJUSTMENTS

PRECAUTION

the following parts with a denatured-alcohol-moistened

swab :

playback headpinch roller

capstanrubber belt

etize the playback head with a head demagnetizer.

Do not use a magnetized screwdriver for the adjustments.

measurement and adjustment should be performed with

the rated power supply voltage (2.5 V) unless otherwise noted.

Torque Measurement

Mode

FWD

back tension

REV

back tension

FF, REW

CQ-102RC

CQ-102C

Torque meterMeter reading

20 – 42 g • cm

(0.28 – 0.58 oz• inch)

less than 2 g • cm

(less than 0.027 oz• inch)

20 – 42 g • cm

(0.28 – 0.58 oz• inch)

less than 2 g • cm

(less than 0.027 oz• inch)

more than 60 g • cm

(more than 0.84 oz• inch)

•Supplied voltage : 2.5V.

•Switch and control position

MEGA BASS : OFF

VOLUME control : maximum

AVLS : NORM

TAPE SECTION

Test Tape

Type

WS-48A

0 dB = 0.775V

Signal

3kHz, 0dB

Used for

Tape Speed Adjustment

Procedure :

test tape

WS-48A

(3kHz, 0dB)

set

phones jack (J301)

frequency counter

Ω

CQ-201B

ck 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

ck 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 :

RV601

– 8 –

TUNER SECTION

AM Section

BAND : AM

0 dB = 1µV

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

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

< >: US, Canadian, 5E, 6E model

[ ]: Saudi Arabia model

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1450kHz

AM RF signal

generator

Put the lead-wire

antenna close to

the set.

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

FM Section

BAND : FM

FM RF signal

generator

TP26

0.01

22.5kHz frequency deviation

by 400Hz signal.

Output level :

as low as possible

C31

TP204

TP844

FL1

AM FREQUENCY COVERAGE ADJUSTMENT

Reading on digtal

Adjust partsFrequency display

voltmeter

Adjustment value : 1.7V

L4531kHz < 530kHz>

Standard value : 1.6-1.8V

Confirmation1,710kHzStandard value : 8.8V

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

CT1

621kHz

1,395kHz

< 620kHz>

< 1,400kHz>

[MAIN BOARD]

(Side B)

BT2

FB313

FB312

FB311

TP8

FM FREQUENCY COVERAGE ADJUSTMENT

Reading on digtal

Adjust partsFrequency display

voltmeter

Confirmation

87.5MHz

108MHz

Standard value : 4.3V

Adjustment value : 8.0V

Standard value : 7.9-8.1V

C35

FB2

TP26

R22

S702

ENTER

R10

C10

C34

FB201

TP1

FB101

US,CND,5E,6E

C38

TP21

MODEL

C33

TP2

FB301

C32

C14

C30

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

Confirmation

87.5MHz[87.35MHz]

108MHz[108.25MHz]

C11

•Abbreviation

5E, 6E : South America

Adjustment Location : Main board (See page 10)

R19

R21

level meter

Ω

set

phones jack (J301)

– 9 –

Frequency Coverage Adjustment

Setting :

digital voltmeter

(DC range)

TP781 (VT)

[MAIN BOARD]

(Side B)

C31

TP204

TP844

C35

FB2

S707

FF +

TP809

(GND)

TP809 (GND)

R609

R608

TP129

JC11

R606

RV601

Q603

TP725

R708

TP708

TP745

L70

TP734

R703

S714

C41

R702

R10

C10

C14

C30

S702

ENTER

IC1

R21

C17

S705

SET

C16

R12

TP2

C32

C38

TP21

TP764

C11

TP740

TP770

JC109

TP735

C13

S712

TUNING

C21

TP759

R16

C22

C25

C20

R722

TP736

TP739

R723

R724

TP731

TP730

TP781

(VT)

Adjustment Location :

L4 : AM Frequency Coverage Adjustment

[MAIN BOARD] (SIDE A)

L1 : FM Tracking Adjustment

T1 : AM IF Adjustment

L2 : AM Tracking Adjustment

CT1 : AM Tracking Adjustment

L3 : FM Frequency Coverage Adjustment

– 10 –

SECTION 4

DIAGRAMS

4-1. EXPLANATION OF IC TERMINALS

IC701 TC9327AF-621 (SYSTEM CONTROL/LCD DRIVE)

Pin NameI/OPin Description

1– 4COM1 – 4OLCD driver common output.

5 – 22S1 – 18OLCD driver output.

23MOTOR DIROMotor rotation direction control output (FWD: L, REV: H).

24MOTOR CTLOMotor ON/OFF control output (OFF: L, ON: H).

25MOTOR SPEEDOMotor speed control output (Normally: L, Speed down: H).

26MOTOR BRKOMotor brake control output (Brake OFF: L, Brake ON: H).

27PHOTO CTLOPhoto reflector rotation detection control output.

28DOLBY—Not used (OPEN).

29NC—Not used (OPEN).

30AVLSOAVLS control output (AVLS OFF: L, AVLS IN: H).

31FM MODEOLOCAL/DX control output (DX: L, LOCAL: H) (US, CND, 5E, 6E only).

32TAPE SELECTOTape select control output (Normal: L, CrO2/METAL: H).

33PHOTO INIPhoto reflector rotation detection input.

34 – 37K0 – 3IKey input 0 – 3.

38NC—Not used (OPEN).

39 – 41KO1 – 3IKey input 1 – 3.

42BATT DETIPower supply voltage detection input (A/D input).

43HOLDIHOLD input.

44RM KEY INIRemote control key input.

45AD REFIReference voltage of pin 43 and 44.

46CSOChip select output for EEPROM.

47DATAOData output for EEPROM.

48SCLKOSCLK output for EEPROM.

49BEEPOBEEP output.

50TESTITest mode select terminal (Connect to remote contorol).

51MEGA BASSOMEGA BASS control output (ON: L, OFF: H).

52MUTEOMute signal output (OFF: L, ON: H)

53AMP CTLOPower AMP ON/OFF control output.

54OPENIOPEN switch input.

55REV SWIMechanism deck mode detection switch input (REV ON: H).

56REW SWIMechanism deck mode detection switch input (REW ON: H).

57FF SWIMechanism deck mode detection switch input (FF ON: H).

58FWD SWIMechanism deck mode detection switch input (FWD ON: H).

59BANDOBAND select output (AM: L, FM: input).

60RADIO ONORADIO ON/OFF control output (OFF: L, ON: H).

61IF REQOIF request output (Auto scan: L, Normally: H).

62NC—Not used (OPEN).

63TEST/NC—Not used (OPEN).

64IF INIIF input.

65PRE AMP CTLOPreamp mute signal output.

66D02OVT control signal output.

67HOLD—Fixed at “H” in this set.

68NC—Not used (OPEN).

69GND—Ground.

70VCO FMIVCO (FM) input.

– 11 –

Pin NameI/OPin Description

71VCO AMIVCO (AM) input.

72VDD—Power supply pin.

73RESETIReset input. Connect to VDD.

74XOUTOCrystal oscillator output (75 kHz).

75XINICrystal oscillator input (75 kHz).

76VXT—Stabilized capacitor connection of crystal oscillation power supply.

77VLCD—LCD driver power rising pressure pin.

78, 79C1, 2—LCD driver power rising pressure pin.

80VEE—1.5 V constant voltage power supply for LCD driver.

– 12 –

WM-FX491/FX491ST/FX493/FX493ST

4-2. BLOCK DIAGRAM

•Signal path.•Abbreviation

F: FM

CND:Canadian

f: AM

EA:Saudi Arabia

E: PB

CH: Chinese

9E:Indication of country of origin

5E, 6E:South America

– 13 –– 14 –

WM-FX491/FX491ST/FX493/FX493ST

4-3. PRINTED WIRING BOARDS

Semiconductor

3456

DRY BATTERY

SIZE "AA"

(DESIGNATION R6)

2PCS, 3V

91011121314

1617

1819

Location

Ref. No.

D301

D401

D402

IC1

IC101

IC701

IC702

IC703

Q51

Q52

Q53

Q303

Q304

Q305

Q401

Q603

Q604

Q605

Q606

Q607

Q701

Q702

Q703

Q751

Q752

Location

C-18

C-4

B-19

E-14

D-3

D-9

C-14

B-17

C-15

C-3

B-13

E-4

B-12

B-13

D-14

B-4

C-11

C-12

C-11

E-14

E-7

B-15

B-14

[MAIN BOARD]

(SIDE B)

R609

J301

[MAIN BOARD] (SIDE A)

C31

TP204

TP844

FL1

C35

FB2

S707

TP809

(GND)

R608

TP129

TP760

R752

S715

BAND

RADIO ON

TP752

TP766

JC107

S711

RADIO OFF

JC106

S704

REW–

TP753

TP737

TP104

TP106

TP203

TP727

TP755

TP757

TP758

COM

(RED )

TP103

C305

C312

EXCEPT

E,EA,9E,CH MODEL

R100

E,EA,9E,CH MODEL

J303

DC IN 3V

Q304

FB312

FB311

Q305

Q51

C52

R54

C51

R55

TP201

R711

C608

TP231

TP230

Q604

Q605

TP229

TP843

Q52

TP845

Q53

R52

C53

R751

R753

TP808

C716

X701

Q703

FB313

Q603

Q752

Q751

BT2

R606

RV601

JC110

C710

C610

BT1

R310

R53

TP204

TP205

D301

IC702

R13

R706

C15

TP861

C40

TP839

TP218

C37

C19

R15

C18

C724

C721

R770

C313

C719

C723

C722

C720

R11

R14

EXCEPT US,CND,

5E,6E MODEL

R20

US,CND,

5E,6E MODEL

TP844

TP764

TP740

TP770

C706

C708

L702

TP26

C11

R10

C10

JC109

(WHT)

TP735

(ORG)

(BLK )

TP206

R715

TP840

R754

PH751

TP301

R614

TP228

TP232

TP601

Q606

FERR ITE-ROD

ANTENNA

R22

S702

ENTER

R19

TP5

C23

C24

RV301

VOL

R17

R18

C25

C21

TP759

R16

C22

IC1

R21

C17

C20

S705

SET

C16

R12

C13

S712

TUNING

S709

TUNING

–

REV

S601

REW

FWD

R107

S701

TP102

TP132

HOLD

TP202

TP107

TOFF

TP105

TP101

FWD

JC101

TP825

IC701

R612

TH601

TP823

TP824

R611

IC703

R207

TP130

IC101

TP127

TP826

R610

C29

C311

C26

ND701

LIQUID CRYSTAL

DISPLAY

R722

TP736

TP841

TP781

(VT)

S708

TP724

R403

C404

L401

Q401

C405

T401

C403

R402

TP401

Q701

JC111

C725

CT1

TP12

TP11

R108

TP739

R723

R724

TP731

R728

R305

TP730

R726

TP754

R727

CN303

R761

R705

R700

C701

Q702

TP108

TP741

TP881

2024

Q303

TP116

R729

TP115

TP114

TP113

TP121

TP123

R707

TP124

TP122

(11)

M901

REEL/CAPSTAN

MOTOR

COM

C107

C705

TP866

TP852

C704

R704

D402

C402

C707

TP854

R759

1-675-208-

(11)

TP117

TP119

TP112

1-675-208-

Note:

•X: parts extracted from the component side.

•: Through hole.

•b: 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

(Side A)parts face are indicated.

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

S301

(OPEN DET)

L-CH

FWD

HP901

PLAYBACK

HEAD

R-CH

REV

L-CH

– 15 –– 16 –– 17 –

C34

FB201

TP1

FB101

US,CND,5E,6E

TP21

MODEL

TP2

C33

FB301

C32

C14

C30

R708

TP725

TP708

TP745

L701

TP734

C702

R703

S714

C41

R702

C36

TP834

JC102

R771

TP835

JC103

TP215

C28

TP25

TP859

TP212

TP211

TP837

TP836

– 18 –

4-4. SCHEMATIC DIAGRAM

Refer to page 22 for IC Block Diagram.

WM-FX491/FX491ST/FX493/FX493ST

Waveforms

290 mVp-p

75 kHz

IC701 uf

XOUT

VOLT/DIV : 50 mV AC

TIME/DIV : 5 µsec

3.2 Vp-p

369 nsec

Q401 C

VOLT/DIV : 1 V AC

TIME/DIV : 0.1 msec

Note:

•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

W or less unless otherwise

specified.

•: internal component.

•U: B+ Line.

•H: adjustment for repair.

•Power voltage is dc 3V and fed with regulated dc power

supply from battery terminal.

•Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark: FM (RADIO SECTION)

PLAY (TAPE SECTION)

(): AM

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

Voltage variations may be noted due to normal produc-

tion tolerances.

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

•Circled numbers refer to waveforms.

•Signal path.

F: FM

f: AM

E: PB

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

– 19 –– 20 –– 21 –

SECTION 5

EXPLODED VIEWS

IC Block Diagram.

IC1 TA2104AFN (EL)

24232221201918

RED

OSC

BUFF

VCO

BUFF

DIVIDE

DECOOE

BUFF

LEVEL

DET

1/8

DET

ST/MO

FM/AM

MIX

AMIF

FMIF

AGC

MUTE

DNTT

NDC

– 22 –

NOTE :

•-XX, -X mean standardized parts, so they•The mechanical parts with no reference

•Abbreviation

may have some difference from the originalnumber in the exploded views are not

CND:Canadian

ed.

FR:French

•Items marked “ * ”are not stocked since they•Hardware (# mark) list and accessories and

EA:Saudi Arabia

are seldom required for routine service. Somepacking materials are given in the last of this

CH: Chinese

delay should be anticipated when orderingparts list.

E:Indication of country of origin

these items.

9E:No Indication of country of origin

5E, 6E:South America

5-1. CABINET SECTION

CEV:Ukraine, Hungary, Czech

MT-WMEX404-147

ND701

Ref. ptionRemarkRef. ptionRemark

13-039-652-01LID,BATTERY CASE (FX491,FX491ST)17X-3378-291-1HOLDER SUB ASSY, CASSETTE

13-039-652-11LID,BATTERY CASE (FX493,FX493ST)(FX493:US,5E,6E,FX493ST)

23-039-658-01RUBBER (B), BUTTON17X-3378-292-1HOLDER SUB ASSY, CASSETTE

3X-3378-293-1CABINET (FRONT) SUB ASSY(FX491,FX491ST)(FX493:AEP,CEV,FR,9E,EA,CH)

3X-3378-294-1CABINET (FRONT) SUB ASSY(FX493,FX493ST)183-019-514-21KNOB(OPEN)

193-039-651-01CENTER CABINET (US,CND,5E,6E)

43-039-657-01RUBBER (A), BUTTON193-039-651-11CENTER CABINET (E,EA,CH)

53-704-197-11LOCK,SERRAT IB

*63-039-660-01HOLDER (LCD)193-039-651-21CENTER CABINET (AEP,CEV,FR)

73-040-176-01RUBBER, CONDUCTIVE193-039-651-31CENTER CABINET (9E)

83-022-857-01SPRING (OPEN)203-318-203-51SCREW (B1.7X12), TAPPING

213-040-144-01SPRING (CASSETTE)

93-022-856-01SPRING (KNOB), TENSION233-020-511-01TERMINAL (+), BATTERY

103-704-197-91SCREW (M1.4X1.8), LOCKING

113-019-421-01LEVER, OPEN24A-3021-309-AMAIN BOARD, COMPLETE (US,CND)

123-019-422-01JOINT24A-3021-310-AMAIN BOARD, COMPLETE (AEP,CEV)

133-349-825-31SCREW24A-3021-311-AMAIN BOARD, COMPLETE (E,9E,EA,CH)

24A-3021-312-AMAIN BOARD, COMPLETE (5E,6E)

143-318-382-61SCREW (1.7X2.5), TAPPING24A-3021-313-AMAIN BOARD, COMPLETE (FR)

153-039-661-01LOCKER (OPEN)

163-025-276-01SPRING (LID UP)253-020-512-01TERMINAL (-), BATTERY

17X-3378-289-1HOLDER SUB ASSY, CASSETTEL21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

(FX491:CND,5E,6E,FX491ST)ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

17X-3378-290-1HOLDER SUB ASSY, CASSETTE

(FX491:AEP,CEV,FR,E,9E,CH)

– 23 –

5-2. MECHANISM DECK SECTION

(MT-WMEX404-147)

HP901

M901

Ref. ptionRemarkRef. ptionRemark

51X-3375-020-1PINCH LEVER (N-F) ASSY633-703-816-31SCREW (M1.4), SPECIAL HEAD

52X-3372-619-1WHEEL ASSY (SP), CAPSTAN64X-3375-021-1PINCH LEVER (R-F) ASSY

533-354-868-01BELT653-703-816-73SCREW (M1.4), SPECIAL HEAD

543-021-950-01GEAR (DF)

553-021-982-01SPRING (MODE), COMPRESSION663-921-797-01WASHER

673-921-003-01BEARING

56X-3375-024-1CLUTCH ASSY (F)683-022-100-01SPRING (B.T.), COMPRESSION

573-021-951-01GEAR (CAM)693-024-223-01GEAR (REEL-2)

583-348-953-21WASHER70X-3375-268-1GEAR (AF-SV) ASSY

593-021-979-01SPRING (UDF), COMPRESSION

603-021-949-01GEAR (BF)713-034-685-01WASHER (1.03-3.0)

HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)

61X-3375-022-1CHASSIS ASSY (F)M9011-763-073-11MOTOR, DC (CAPSTAN/REEL)

623-021-974-03SPRING (HEAD BASE)(INCLUDING PULLEY)

– 24 –

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.

•RESISTORS

All resistors are in ohms

METAL : Metal-film resistor

METAL OXIDE :Metal oxide-film resistor

•SEMICONDUCTORS

In each case, u : µ, for example :

uA.... : µA.... , : µPA....

: µPB.... , : µPC....

: µPD....

•CAPACITORS

uF : µF

•COILS

uH : µH

When indicating parts by reference num-

ber, please include the board.

MAIN

•Abbreviation

CND:Canadian

FR:French

EA:Saudi Arabia

CH: Chinese

E:Indication of country of origin

9E:No Indication of country of origin

5E, 6E:South America

CEV:Ukraine, Hungary, Czech

F : nonflammable

•Items marked “ * ”are not stocked since

they are seldom required for routine service.

Some delay should be anticipated when

ordering these items.

Ref. ptionRemarkRef. No.

A-3021-309-AMAIN BOARD, COMPLETE (US,CND)

C28

A-3021-310-AMAIN BOARD, COMPLETE (AEP,CEV)

C29

A-3021-311-AMAIN BOARD, COMPLETE (E,EA,9E,CH)

A-3021-312-AMAIN BOARD, COMPLETE (5E,6E)

C30

A-3021-313-AMAIN BOARD, COMPLETE (FR)

C31

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

C32

C33

3-020-511-01TERMINAL (+), BATTERY

3-020-512-01TERMINAL (-), BATTERY

C34

*3-039-660-01HOLDER (LCD)

3-040-176-01RUBBER, CONDUCTIVE

C35

C36

< CAPACITOR >

C37

C40

C11-115-416-11CERAMIC CHIP1000PF5%25V

C41

C21-162-959-11CERAMIC CHIP330PF5%50V

C31-162-995-11CERAMIC CHIP0.022uF50V

C51

C41-162-907-11CERAMIC CHIP2PF0.25PF50V

C52

C51-162-995-11CERAMIC CHIP0.022uF50V

C53

C107

C61-164-156-11CERAMIC CHIP0.1uF25V

C205

C71-162-919-11CERAMIC CHIP22PF5%50V

C81-162-959-11CERAMIC CHIP330PF5%50V

C207

C91-163-033-91CERAMIC CHIP0.022uF50V

C305

C101-115-416-11CERAMIC CHIP1000PF5%25V

C311

C312

C111-115-416-11CERAMIC CHIP1000PF5%25V

C313

C121-162-915-11CERAMIC CHIP10PF0.5PF50V

C131-162-970-11CERAMIC CHIP0.01uF10%25V

C401

C141-162-909-11CERAMIC CHIP4PF0.25PF50V

C402

C151-162-970-11CERAMIC CHIP0.01uF10%25V

C403

C404

C161-115-416-11CERAMIC CHIP1000PF5%25V

C405

C171-115-156-11CERAMIC CHIP1uF10V

C181-107-826-91CERAMIC CHIP0.1uF10%16V

C406

C191-109-982-11CERAMIC CHIP1uF10%10V

C407

C201-164-156-11CERAMIC CHIP0.1uF25VC608

C610

C211-162-970-11CERAMIC CHIP0.01uF10%25V

C701

(EXCEPT US,CND,5E,6E)

C211-164-245-11CERAMIC CHIP0.015uF10%25VC702

(US,CND,5E,6E)C704

C221-162-970-11CERAMIC CHIP0.01uF10%25VC705

(EXCEPT US,CND,5E,6E)C706

C221-164-245-11CERAMIC CHIP0.015uF10%25VC707

(US,CND,5E,6E)

C231-125-837-91CERAMIC CHIP1uF10%6.3VC708

C709

C241-125-837-91CERAMIC CHIP1uF10%6.3VC710

C251-109-935-11TANTAL. CHIP4.7uF20%4VC712

C261-162-974-11CERAMIC CHIP0.01uF50VC713

– 25 –

Part ption

1-162-974-11CERAMIC CHIP

1-115-467-11CERAMIC CHIP

1-163-275-11CERAMIC CHIP

1-113-988-11TANTAL. CHIP

1-164-315-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-164-315-11CERAMIC CHIP

1-162-970-11CERAMIC CHIP

1-162-921-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-162-964-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-970-11CERAMIC CHIP

1-115-156-11CERAMIC CHIP

1-124-433-00ELECT

1-107-826-91CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-164-505-11CERAMIC CHIP

1-162-915-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-974-11CERAMIC CHIP

1-107-826-91CERAMIC CHIP

1-124-434-00ELECT

1-162-974-11CERAMIC CHIP

1-104-847-11TANTAL. CHIP

1-162-964-11CERAMIC CHIP

1-115-467-11CERAMIC CHIP

1-162-927-11CERAMIC CHIP

1-115-416-11CERAMIC CHIP

1-162-927-11CERAMIC CHIP

1-162-974-11CERAMIC CHIP

1-162-917-11CERAMIC CHIP

Remark

0.01uF50V

0.22uF10%10V

0.001uF5%50V

68uF20%4V

470PF5%50V

1000PF5%25V

(US,CND,5E,6E)

470PF5%50V

0.01uF10%25V

33PF5%50V

1000PF5%25V

0.001uF10%50V

22uF20%4V

0.01uF10%25V

1uF10V

100uF20%4V

0.1uF10%16V

1000PF5%25V

2.2uF16V

10PF0.5PF50V

22uF20% 4V

0.01uF50V

0.1uF10%16V

220uF20%4V

0.01uF50V

22uF20%4V

0.001uF10%50V

0.22uF10%10V

100PF5%50V

1000PF5%25V

100PF5%50V

0.01uF50V

15PF5%50V

MAIN

Ref. ptionRemarkRef. No.

C7141-115-156-11CERAMIC CHIP1uF10V

C7151-164-156-11CERAMIC CHIP0.1uF25V

C7161-164-156-11CERAMIC CHIP0.1uF25V

JC101

C7171-164-156-11CERAMIC CHIP0.1uF25V

JC102

C7181-115-416-11CERAMIC CHIP1000PF5%25VJC103

JC106

C7191-115-416-11CERAMIC CHIP1000PF5%25V

JC107

C7201-115-416-11CERAMIC CHIP1000PF5%25V

C7211-115-416-11CERAMIC CHIP1000PF5%25V

JC108

C7221-115-416-11CERAMIC CHIP1000PF5%25V

JC109

C7231-115-416-11CERAMIC CHIP1000PF5%25V

JC110

JC111

C7241-115-416-11CERAMIC CHIP1000PF5%25V

C7251-115-416-11CERAMIC CHIP1000PF5%25V

< FILTER >L1

CF11-781-271-11FILTER, CERAMIC

CF21-781-152-11FILTER, CERAMICL4

L401

< CONNECTOR >

L701

CN3031-750-346-21CONNECTOR, FFC/EPC (ZIF) 6P

L702

< TRIMMER >

CT11-141-463-11CAP, ADJ 10PF (AM TRACKING)

ND701

< DIODE >

D18-719-053-30DIODE MA2S357-(TX). SOPH751

D28-719-072-58DIODE SVC347-TL

D38-719-053-30DIODE MA2S357-(TX). SO

D3018-719-017-58DIODE MA8068

D4018-719-073-01DIODE MA111-(K8).S0

Q51

D4028-719-056-89DIODE UDZ-TE-17-12B

Q52

Q53

< FERRITE BEAD >

Q303

FB21-500-113-22FERRITEQ304

FB1011-500-113-22FERRITE

Q305

FB2011-500-113-22FERRITE

Q401

FB3011-500-113-22FERRITE

Q603

FB3111-500-113-22FERRITE

Q604

FB3121-500-113-22FERRITE

Q605

FB3131-500-113-22FERRITE

Q606

Q607

< FILTER >

Q701

Q702

FL11-236-711-21FILTER, BAND PASS

Q703

< IC >

Q751

Q752

IC18-759-564-18IC TA2104AFN(EL)

IC1011-418-581-11EG UNIT (WFX)

IC7018-759-653-11IC TC9327AF-621

IC7028-759-457-70IC XC62RP1602MRR1

IC7038-759-457-68IC AK93C45AV-LR2

< JACK >R4

J3011-785-164-11JACK (i)

J3031-750-061-11JACK,DC(POLARITY UNIFIED TYPE)R6

(DC IN 3V) (E,EA,9E,CH)R7

R10

– 26 –

Part ptionRemark

< JUMPER RESISTOR >

1-216-296-00METAL CHIP05%1/8W

1-216-864-11METAL CHIP05%1/16W

1-216-296-00METAL CHIP05%1/8W

1-216-864-11METAL CHIP05%1/16W

1-216-295-00METAL CHIP05%1/10W

1-216-296-00METAL CHIP05%1/8W

< COIL >

1-416-596-11COIL (RF) (FM TRACKING)

1-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

1-416-595-11COIL (OSC) (FM FREQUENCY COVERAGE)

1-415-962-11COIL (OSC) (AM FREQUENCY COVERAGE)

1-412-991-11INDUCTOR10uH

1-412-995-21INDUCTOR22uH

1-412-973-11INDUCTOR0.33uH

1-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

< PHOTO INTERRUPTER >

8-749-016-61REFLECTOR NJL5197K-W-F20(TE1)

< TRANSISTOR >

8-729-602-21TRANSISTOR 2SC4154-F (US,CND,5E,6E)

8-729-420-24TRANSISTOR 2SB1218A-QRS

8-729-402-13TRANSISTOR XN1501

8-729-015-76TRANSISTOR UN5211

8-729-402-13TRANSISTOR XN1501

8-729-807-86TRANSISTOR 2SB1295-UL5

8-729-015-76TRANSISTOR UN5211

8-729-602-21TRANSISTOR 2SC4154-F

8-729-421-26TRANSISTOR UN5216

8-729-046-89TRANSISTOR 2SB970-S(TX).S0

8-729-421-26TRANSISTOR UN5216

8-729-602-21TRANSISTOR 2SC4154-F

8-729-231-96TRANSISTOR 2SK880GR-TE85L

8-729-423-55TRANSISTOR 2SC3931-D

8-729-421-26TRANSISTOR UN5216

8-729-420-24TRANSISTOR 2SB1218A-QRS

< RESISTOR >

1-216-853-11METAL CHIP470K5%1/16W

1-216-821-11METAL CHIP1K5%1/16W

1-216-853-11METAL CHIP470K5%1/16W

1-216-864-11METAL CHIP05%1/16W

1-216-817-11METAL CHIP4705%1/16W

1-216-827-11METAL CHIP3.3K5%1/16W

Ref. ption

R111-216-296-91SHORT

R121-216-833-91RES-CHIP

R131-216-821-11METAL CHIP

R141-216-845-11METAL CHIP

R151-216-827-11METAL CHIP

R161-216-821-11METAL CHIP

R171-216-839-11METAL CHIP

R181-216-839-11METAL CHIP

R191-216-815-11METAL CHIP

R201-216-821-11METAL CHIP

R211-216-864-11METAL CHIP

R221-216-864-11METAL CHIP

R521-216-819-11METAL CHIP

R531-216-829-11METAL CHIP

R541-216-847-11METAL CHIP

R551-216-833-91RES-CHIP

R1001-216-864-11METAL CHIP

R1071-216-791-11METAL CHIP

R1071-216-797-11METAL CHIP

R1071-216-811-11METAL CHIP

R1081-216-811-11METAL CHIP

R1081-216-817-11METAL CHIP

R1091-216-825-11METAL CHIP

R2071-216-791-11METAL CHIP

R2071-216-797-11METAL CHIP

R2071-216-811-11METAL CHIP

R2081-216-811-11METAL CHIP

R2081-216-817-11METAL CHIP

R2091-216-825-11METAL CHIP

R3041-216-821-11METAL CHIP

R3051-216-821-11METAL CHIP

R3101-216-821-11METAL CHIP

R4011-216-845-11METAL CHIP

R4021-216-821-11METAL CHIP

R4031-216-845-11METAL CHIP

R4041-216-813-11METAL CHIP

R6061-216-845-11METAL CHIP

R6081-216-827-11METAL CHIP

R6091-216-833-91RES-CHIP

R6101-216-821-11METAL CHIP

R6111-216-864-11METAL CHIP

R6121-216-841-11METAL CHIP

R6131-216-817-11METAL CHIP

R6141-216-817-11METAL CHIP

R6151-216-817-11METAL CHIP

R7001-216-829-11METAL CHIP

R7011-216-835-11METAL CHIP

MAIN

RemarkRef. ptionRemark

0R7021-216-841-11METAL CHIP47K5%1/16W

10K5%1/16WR7031-216-805-11METAL CHIP475%1/16W

1K5%1/16WR7041-216-835-11METAL CHIP15K5%1/16W

100K5%1/16W

(EXCEPT US,CND,5E,6E)R7051-216-837-11METAL CHIP22K5%1/16W

3.3K5%1/16WR7061-216-825-11METAL CHIP2.2K5%1/16W

R7071-216-864-11METAL CHIP05%1/16W

1K5%1/16WR7081-216-845-11METAL CHIP100K5%1/16W

33K5%1/16WR7111-216-821-11METAL CHIP1K5%1/16W

33K5%1/16W

3305%1/16WR7151-216-853-11METAL CHIP470K5%1/16W

1K5%1/16WR7221-216-821-11METAL CHIP1K5%1/16W

(US,CND,5E,6E)R7231-216-821-11METAL CHIP1K5%1/16W

R7241-216-821-11METAL CHIP1K5%1/16W

05%1/16WR7261-216-833-91RES-CHIP10K5%1/16W

05%1/16W

6805%1/16WR7271-216-833-91RES-CHIP10K5%1/16W

4.7K5%1/16WR7281-216-833-91RES-CHIP10K5%1/16W

150K5%1/16WR7291-216-833-91RES-CHIP10K5%1/16W

R7511-216-817-11METAL CHIP4705%1/16W

10K5%1/16WR7521-216-851-11METAL CHIP330K5%1/16W

05%1/16W

(EXCEPT E,EA,9E,CH)R7531-216-853-11METAL CHIP470K5%1/16W

3.35%1/16WR7541-216-821-11METAL CHIP1K5%1/16W

(US,CND)R7551-216-853-11METAL CHIP470K5%1/16W

105%1/16WR7561-216-853-11METAL CHIP470K5%1/16W

(EXCEPT US,CND,FR)R7571-216-853-11METAL CHIP470K5%1/16W

1505%1/16W

(FR)R7581-216-853-11METAL CHIP470K5%1/16W

R7591-216-845-11METAL CHIP100K5%1/16W

1505%1/16WR7611-216-833-91RES-CHIP10K5%1/16W

(EXCEPT US,CND,FR)R7701-216-833-91RES-CHIP10K5%1/16W

4705%1/16WR7711-218-871-11METAL CHIP10K0.5%1/16W

(US,CND,FR)

2.2K5%1/16W

< VARIABLE RESISTOR >

3.35%1/16W

(US,CND)

RV3011-225-362-11RES, VAR, CARBON (w VOL)

105%1/16W

RV6011-241-784-11RES, ADJ, CARBON 5K (TAPE SPEED)

(EXCEPT US,CND,FR)

< SWITCH >

1505%1/16W

(FR)

S3011-771-040-21SWITCH, PUSH (OPEN DET)

1505%1/16W

S6011-771-598-11SWITCH, SLIDE (RVS/REW/FF/FWD)

(EXCEPT US,CND,FR)

S7011-572-922-11SWITCH, SLIDE (HOLD .)

4705%1/16W

(US,CND,FR)

< TRANSFORMER >

2.2K5%1/16W

1K5%1/16W

T11-416-594-11TRANSFORMER, IF (AM IF)

T4011-449-021-21TRANSFORMER, DC/DC CONVERTER

1K5%1/16W

< THERMISTOR >

100K5%1/16W

1K5%1/16W

TH6011-810-794-11THERMISTOR, POSITIVE

100K5%1/16W

< VIBRATOR >

2205%1/16W

100K5%1/16WX11-781-367-21FILTER, CERAMIC(DISCRIMINATOR)

3.3K5%1/16W

X7011-577-262-11VIBRATOR, CRYSTAL (75kHz)

10K5%1/16W

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

1K5%1/16W

MISCELLANEOUS

05%1/16W

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

47K5%1/16W

4705%1/16W

HP9011-500-555-11HEAD, MAGNETIC (PLAYBACK)

4705%1/16W

L21-501-987-21AM FERRITE-ROD ANTENNA (AM TRACKING)

4705%1/16WM9011-763-073-11MOTOR, DC (CAPSTAN/REEL)

(INCLUDING PULLEY)

4.7K5%1/16W

ND7011-803-764-11DISPLAY PANEL, LIQUID CRYSTAL

15K5%1/16W**************************************************************

– 27 –

WM-FX491/FX491ST/FX493/FX493ST

Ref. ptionRemark

ACCESSORIES & PACKING MATERIALS

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

1-505-521-11HEADPHONE (MDR-023) (FX491:CND)

1-505-521-21HEADPHONE (MDR-023SP) (FX493:US)

3-042-385-01CASE, CARRYING (FX491:CND,5E,6E,FX491ST/

FX493:US,5E,6E,FX493ST)

3-044-230-01CLIP, BELT (FX491:CND,5E,6E,FX491ST/

FX493:US,5E,6E,FX493ST)

3-318-203-71SCREW (B1.7X5), TAPPING (FX493,FX493ST)

3-867-999-11MANUAL, INSTRUCTION

(FX491:AEP,FR/FX493:AEP,FR)

(ENGLISH,FRENCH,GERMAN,ITALIAN)

3-867-999-21MANUAL, INSTRUCTION

(FX491:AEP/FX493:AEP)

(SPANISH,PORTUGUESE,DUTCH,SWEDISH)

3-867-999-31MANUAL, INSTRUCTION

(FX491:CEV/FX493:CEV)

(ENGLISH,HUNGARIAN,CZECH,RUSSIAN)

3-867-999-41MANUAL, INSTRUCTION

(FX491:CEV/FX493:CEV)

(POLISH,GREEK,TURKISH,SLOVAKIAN)

3-867-999-51MANUAL, INSTRUCTION

(FX491:5E,6E/FX493:US,5E,6E/FX493ST:US)

(ENGLISH,SPANISH,PORTUGUESE)

3-867-999-61MANUAL, INSTRUCTION

(FX491:CND,FX491ST/FX493:EA/

FX493ST:CND)(ENGLISH,FRENCH,ARABIC)

3-867-999-71MANUAL, INSTRUCTION (FX491:E)

(ENGLISH,TRADITIONAL,CHINESE,KOREAN)

3-867-999-81MANUAL, INSTRUCTION(FX491:9E/FX493:9E)

(ENGLISH,TRADITIONAL,CHINESE,KOREAN)

3-867-999-91MANUAL, INSTRUCTION

(FX491:AEP,CH/FX493:AEP,CH)

(ENGLISH,FINNISH,SIMPLIFIED CHINESE)

8-953-130-90HEADPHONE MDR-E805LP

(FX491:AEP,CEV,FR,E,5E,6E,9E,CH)

8-953-273-83RECEIVER,EAR MDR-G051LP (FX491ST)

8-953-304-90RECEIVER MDR-E805SP

(FX493:AEP,CEV,FR,5E,6E,9E,EA,CH)

8-953-774-90RECEIVER,EAR MDR-G051SP (FX493ST)

A-3052-171-AREMOTE CONTROL ASSY (FX493,FX493ST)

Sony Corporation

9-927-641-11

Personal Audio Division Company

– 28 –

2000A0278-1

Published by General Engineering Dept.

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