Sony Walkman wm-gx400 User manual

Ver 1.0 2001.03

WM-GX400

SERVICE MANUAL

RADIO CASSETTE-CORDER

SPECIFICATIONS

Canadian Model

AEP Model

E Model

Chinese Model

Tourist Model

9-873-087-11

2001C0200-1

Sony Corporation

Audio Entertainment Group

General Engineering Dept.

Model Name Using Similar Mechanism NEW

Tape Transport Mechanism Type MT-WMGX400-175

Frequency range

Area* FM (MHz) AM (kHz)

AEP, E, Chineses model 87.5 - 108 531 - 1 602

US, Canadian model 87.5 - 108 530 - 1 710

Tourist model 76 - 90 531 - 1 710

* E: European and other countries, U: Canada, and Central and

South America, J: Japan.

Frequency response Playback: 40 - 15,000 Hz

Recording: 100 - 8,000 Hz

Input Microphone (MIC) jack

Output Headphones (i) jack

Load impedance 8 - 300 ohms

Power requirements 3 V DC batteries R6 (size AA) ×2

External DC 3V power sources

Dimensions (w/h/d) Approx. 112.5 ×87.0 ×39.0 mm

(14 1/2×3 1/2×1 9/16 inches), excl.

projecting parts and controls

Mass Approx. 190 g (6.8oz) (main unit only)

Supplied accessories Stereo headphones or earphones (1)

Stereo microphone (1)

Sony dry battery R6P(SR) (2) (“Sony

World Model” only)

Design and specifications are subject to change without notice.

Battery life (Approx. hours) (EIAJ*)

Sony alkaline LR6 (SG)** Sony R6P (SR)

(using headphones/earphones)

playback 24 6

radio 48 15

mic recording 20 4.5

radio recording 12 3

(using the speakers)

playback 13 3

radio 23 6

radio recording 8.5 1.5

* Measured value by the standard of EIAJ (Electronic Industries

Association of Japan) (using a Sony HF series cassette tape).

** When using Sony LR6 (SG) “STAMINA” alkaline dry

batteries (produced in Japan).

Note

• The battery life may be shorter depending on the operating

condition, the surrounding temperature and battery type.

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WM-GX400

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

This section is extracted from

instruction manual.

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

1. GENERAL

Location of Parts and Controls .......................................... 2

2. DISASSEMBLY

2-1. Cabinet (Front)Cabinet (Rear),

"Lid, Cassette ASSY" ............................................... 3

2-2. Main Board ................................................................. 4

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

2-4. HRPE301 (REC/PB/ERASE head),

M601 (Capstan/reel motor), Belt (AR) ....................... 5

2-5. Display Board ............................................................. 5

3. ADJUSTMENTS

3-1. Mechanical Adjustments ............................................. 6

3-2. Electrical Adjustments ................................................ 6

4. DIAGRAMS

4-1. Explanation of IC Terminals ....................................... 7

4-2. Block Diagrams –Tape Section– ................................ 8

4-3. Block Diagrams –Tuner Section– ............................... 9

4-4. Printed Wiring Board –Main Section (Side A)– ....... 10

4-5. Printed Wiring Board –Main Section (Side B)– ....... 11

4-6. Schematic Diagram –Main Section (1/2)– ............... 12

4-7. Schematic Diagram –Main Section (2/2)– ............... 13

4-8. Printed Wiring Board –Display Section (Side A)– ... 14

4-9. Printed Wiring Board –Display Section (Side B)– ... 15

4-10. Schematic Diagram –Display Section– .................. 16

5. EXPLODED VIEWS

5-1. Cabinet (Rear) Section .............................................. 20

5-2. Cassette Lid Section ................................................. 21

5-3. Mechanism Section-1 (MT-WMGX400-175) .......... 22

5-4. Mechanism Section-2 (MT-WMGX400-175) .......... 23

6. ELECTRICAL PARTS LIST ................................ 24

Location of parts and controls

PAUSE

z REC

DIR

REC TIME

AVLS

ISS

DC IN 3V

SPEAKER

i

x STOP

FF/CUE

REW/REVIEW

VOL

FM

AM

OFF

TUNING MODE

TUNING

MIC (PLUG IN POWER)

ENTER

built-in microphone

FM MODE

z

ST/MONO

FM MODE

z

DX/LOCAL

(or/ou/oder)

Y PLAY

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WM-GX400

SECTION 2

DISASSEMBLY

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

• The equipment can be removed using the following procedure.

2-1. CABINET (FRONT), CABINET (REAR), "LID, CASSETTE ASSY"

Cabinet (Rear)

Cabinet (Front) Main board Mechanism deck HRPE301 (REC/PB/ERASE head),

M601 (CAPSTAN/REEL motor), Belt (AR)

Set

Lid, cassette ASSY Display board

Note on installing the

cassette lid assy

When installing the cassette lid ASSY,

insert the one side of the spring (toggle)

and set the other side into the gap on the

cabinet (front) as shown in the figure.

7

3

6Remove from projection

1Screws (+B1.7X9)

2Claws

5Flexible board (22 core) (CN302)

4Flexible board (22 core) (CN301)

Lid, cassette ASSY

Cabinet (front)

Cabinet (rear)

Hand strap

Spring (toggle)

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WM-GX400

2-2. MAIN BOARD

2-3. MECHANISM DECK

4

Cabinet (front)

Black

Orange

Red

White

3Screw (M1.4)

2Flexible board (9 core)

(CN303)

1Remove soldering

(four places)

Main board

2

1Screws (IB LOCK)

Cabinet (front)

Mechanism deck (MT-WMGX400-175

)

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WM-GX400

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3

Lid, cassette ASSY

Gray

Display board

White

Brown

Orange

Red

Black

Holder, cassette

4Remove soldering (from SP101, SP201

)

(four places)

4Remove soldering (from MIC301)

(two places)

2Screws (+BTP1.7)

1Screw (+BTP1.7X5)

2-5. DISPLAY BOARD

2-4. HRPE301 (REC/PB/ERASE HEAD),

M601 (CAPSTAN/REEL MOTOR), BELT (AR)

Attaching belt (AR)

3Belt (AR)

4Screws (M1.4)

1Screws (M1.4)

5M601 (CAPSTAN/REEL motor)

2HRPE301 (REC/PB/ERASE head)

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WM-GX400

3-1. MECHANICAL ADJUSTMENTS

PRECAUTION

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

swab :

record/playback/erase head pinch roller

capstan rubber belts

2. Demagnetize the record/playback/erase head with a head demag-

netizer. (Do not bring the head demagnetizer close to the erase

head.)

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

6. Power supply voltage : 3V DC.

Torque Measurement

Mode Torque Meter Meter Reading

1.97 to 3.92 mN • m

Forward/Reverse CQ-102C (20 to 40 g • cm)

(0.28 to 0.55 oz• inch)

0.05 to 0.49 mN • m

Forward CQ-102C (0.5 to 5.0 g • cm)

Back Tension (0.007 to 0.07 oz• inch)

0.05 to 0.49 mN • m

Reverse CQ-102RC (0.5 to 5.0 g • cm)

Back Tension (0.007 to 0.07 oz• inch)

Fast Forward

more than 4.90 mN • m

and Rewind CQ-201B (50 g • cm)

(0.7 oz• inch)

3-2. ELECTRICAL ADJUSTMENTS

Note:

1. Supplied voltage: 3 V (DC)

2. Switch and control position

VOLUME control : maximum

SPEAKER/HEADPHONE switch : i(headphone)

AVLS switch : OFF

FUNCTION switch : OFF

ISS switch : 1

TAPE DECK SECTION 0 dB = 0.775 V

Test Tape

Type Signal Used for

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

Tape Speed Adjustment

Procedure:

1. Set REC TIME switch (S706) to NORMAL (4.8cm/s).

2. Play back the center portion of tape in REVmode, adjust RV602

so that the reading on the frequency counter becomes 3,000 Hz.

3. Set REC TIME switch (S706) to DOUBLE (2.4cm/s).

4. Play back the center portion of tape in REVmode, adjust RV601

so that the reading on the frequency counter becomes 1,500 Hz.

Specifications:

NORMAL (4.8cm/s) : 2,985Hz - 3,015Hz

DOUBLE (2.4cm/s) : 1,485Hz - 1,515Hz

5. Confirm the frequency difference between the beginning and

the end of tape should be 1.5%.

NORMAL (4.8cm/s) : 45Hz

DOUBLE (2.4cm/s) : 22.5Hz

Adjustment Location:

SECTION 3

ADJUSTMENTS

set

test tape

WS-48A

(3kHz, 0dB)

16Ω

frequency counte

r

iheadphone jack (J301)

IC1

IC301

TP1

RV602 RV601

TP2

GND

RV601: Tape Speed Adjustment (2.4cm/s)

RV602: Tape Speed Adjustment (4.8cm/s)

[MAIN BOARD] (SIDE B)

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SECTION 4

DIAGRAMS

Pin No. Pin name I/O Description

1 XOUT O Connected to 75kHz Crystal oscillator

2 TEST2 I For Test

3 – 6 PA3 – 0 I Control key inputs

7 RADIO ON O Radio on/off control signal output

8, 9 PB2, 1 O Key source signal outputs

10 MOTOR BRK O Motor brake control signal output

11 PUSH I Tuning dial (S701) common switch signal input

12 PAUSE I Pause switch (S303) signal input

13 VERSION I Destination select signal input

14 BAND O Band select signal output

15 SD I SD input

16 COMP I COMP input

17 TU MODE I Tuning mode select switch (S707) signal input

18 TUNING-A I Tuning dial (S701) A switch signal input

19 AMP ON O Power amplifier on/off control signal output

20 BEEP O Beep signal output

21 BACK UP I Back-up voltage detection signal input

22 BATT I Battery voltage detection signal input

23 FACTORY — Not used Pull-up

24 VSS — Power supply ground terminal

25 MUTE O Mute signal output

26 MOTOR CTL O Motor control signal output

27 N/R SW O N/R switch signal output

28 REC I REC detection signal input

29 TAPE I Tape on/off detection signal input

30 X2 I Tape speed select switch (S706) signal input

31 TUNING-B I Tuning dial (S701) B switch signal input

32 PRE CTL — Not used

33 – 44 S12 – S1 O LCD driver segment output terminal

45 – 48 COM4 – 1 O LCD driver common output terminal

49 – 52 DBR4 – 1 I For LCD power supply booster

53 XRESET I System reset signal input

54 TU O Output for tuning voltage generator

55 VDD — Power supply terminal

56 FM IN I FM VCO input

57 AM IN I AM VCO input

58 VSS — Power supply ground terminal

59 E0 O Main charge pump output

60 AIN I LPF amplifier input

61 AOUT O LPF amplifier output

62 AGND — LPF amplifier ground

63 TEST1 I For test

64 XIN I Connected to 75kHz Crystal oscillator

4-1. EXPLANATION OF IC TERMINALS

IC701 (SYSTEM CONTROL/LCD DRIVE) LC72349W-9A27

TUNER SECTION 0 dB = 1 µV

AM Section

FUNCTION switch: AM

FM Section

FUNCTION switch: FM

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

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

RV2 999 kHz <1,000kHz>

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L7 621 kHz <620kHz>

CT1 1,404 kHz <1,400kHz>

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L4 96.0 MHz

FM VCO Adjustment

Procedure:

1. Connect the resistor 10kΩbetween TP1 and TP332.

2. Connect the frequency counter to TP1 (IC1 7pin).

3. Set FUNCTION switch to FM.

4. Tune the set in 96MHz.

5. Adjust RV1 so that the reading on the frequency counter be-

comes 76 kHz.

Specifications: 75 kHz - 77 kHz

AM RF SSG

set

30% amplitude modulation by

400Hz signal.

Output level : as low as possible

Put the lead-wire

antenna close to

the set. 16

Ω

i

headphone jack (J301

)

level meter

FM RF SSG

set

30% amplitude

modulation by

1kHz signal.

Deviation :

±

75kHz

Output level : as low

as possible

0.01

µ

F16

Ω

i

headphone jack (J301

)

main board

TP2

level meter

(side B)

D

3

C15

D4

C28

FB201

FB101

D2

R16

FB301

R15

17

TP2

C

47

C3

TP368

TP369

TP370

0.01

µ

F

FM RF SSG

TP2

(ANT)

Carrier frequency : 96MHz

Deviation : none

Output level : 562

µ

V (55dB)

[MAIN BOARD] (SIDE B)

Adjustment Location:

[MAIN BOARD] (SIDE B)

IC1

C1

D

C28

L6

L2

C10

C8

C

12

C9

C20

C23

C21

C18

R18

R11

R20

R17

TP1

110

11

20

21

30

31

40

TP333C34

TP331

TP332

-4

++

10k

Ω

TP1

(IC1

7

pin) 1

µ

F

frequency

counter

[MAIN BOARD] (SIDE B)

L7:

CT1:

RV2: AM IF Adjustment

L4: FM Tracking Adjustment

RV1: FM VCO Adjustment

AM Tracking Adjustment

no mark : 9kHz step

< > : 10kHz step

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WM-GX400

4-2. BLOCK DIAGRAMS – TAPE SECTION –

CURRENT

DETECT

SPEED

DETECT

SPEED CONTROL

REF

WAVE-

FORM

DETECT

MOTIVE

LOGIC

SOFT

SWITCH

PRE

DRIVE

OUT

U OUT

V OUT

W OUT

VSP

IN+

VREF

S/S

-+

17

4

5

6

16

15

14

13

BIAS

2

3

10

1

17 26

12 30

27

9

8

6

5

4

13

9

MIC

INPUT (L)

PB PRE

INPUT (L)

MIC AMP

PRE AMP

REC AMP

MIC

PR

REC DRIVE

OUTPUT (L)

S301-3

S301-4

R-CH

VCC

VREF

T331

BATT

S302-2

S302-1

S301-2

S301-1

PB/REC

SELECTOR

REFERENCE

REC DRIVE

INPUT (L)

B

IC302

(2/2)

REC

SG A

MAIN

BOARD

(2/2)

REF

REC

D406

VREF

R-CH

L

R

FWD

HRPE301

REC/PB/ERASE HEAD

J302

R

MIC

VCC

Flat Mic

MIC

(PLUG IN POWER)

MIC301

ISS

SWITCH

Q335

ND701

LIQUID

CRYSTAL

DISPLAY

MOTOR

BRAKE

Q601-603

BIAS

OSC

Q334,336

ISS

S703

FM

S708

AM

S709

OFF ENTER

S710 S712

TAPE SPEED 2.4cm/S

RV601

TAPE SPEED 4.8cm/S

RV602

S701 (ROTALY)

3

2

1

S707

S303

BATT

TUN MODE MOTOR CTL

10

MOTOR BLK

19

AMP ON

29

2 322

TAPE

BATT

28

REC

13

VERSION

18

TUNING-A

31

TUNING-B

11

PUSH

CBA

COM

BATT

PAUSE X2

N/R SW

PB1

PB2

PA0

PA1

PA2

COM1

COM4

S706

48

45

44

33

S1

S2

SYSTEM

CONTROL

IC701(1/2)

MOTOR DRIVE/

SPEED CONTROL

IC301

IC302 (1/2)

REC/PB AMP

BATT

DETECT

IC702

S302

REC

PB

S301

FWD

REV

RADIO ON

MUTE

C

MAIN

BOARD

(2/2)

GATE

SWITCH

Q356

MIC

VCC

BATT

Q354-355

REG

Q501, 502

REV

FWD

REV

DC IN 3V

M

M601

CAPSTAN/REEL

MOTOR

U

V

W

COM

S601

(TAPE POWER)

DRY BATTERY

SIZE “AA”

(IEE DESIGNATION LR6)

2PCS, 3V

+

-

J501

[DISPLAY BOARD] (1/3)

[DISPLAY BOARD] (2/3)

R–CH IS OMITTED: SAME AS L–CH

[MAIN BOARD] (1/2)

TUNING MODE

MANUAL

PRESET

VDD

PAUSE

ON

OFF

TUNING

TAPE SPEED

NORMAL

DOUBLE

• Signal path.

E: PB

a: REC

N: MIC

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4-3. BLOCK DIAGRAMS – TUNER SECTION –

25

24

19

27

22

26

20

16

18

FM IN

FM/TV LPF

FM DET.

AM BPF

AGC

TV IN

REGV

MREF

FMRO

TVRO

ARFI

AMLO

FTLO

MPX

35 36 3 7 8 6 3

1

2

4

13

37

12

11

29 2 1

LEVEL

DETECT

MPRG VCO

RV1

FM VCO

RV2

AM IF

IFCT

ATT

Q1

BUFFER

Q3

DC-DC

CONVERTER

Q401

TUNER B+

SWITCH

Q307, 308

MIC

PB IC302

(1/2)

B

TUNER

INPUT (L) LINE

OUT (L)

RV301

AVLS

Q405

MUTE

Q101

Q301, 302

EXCEPT CND, 5E

CND, 5E

R-CH R-CH R-CH

+

-

+

-

S702-1

S702-2

S702

SPEAKER

OFF

ON

S704

AVLS

NORM

LIMIT

REC

SG

MAIN BOARD

(2/2)

A

S705

MONO

ST

LOCAL

DX

SWITCH

Q2

R22

JC2

+

-+

-

+

-

56 57 61 16 15 14 25 2071 64

BEEP

MUTE

BAND

SD

COMP

RADIO ON

XIN

XOUT

AOUT

AM IN

FM IN

X701

75kHz

MAIN BOARD

(1/2)

SYSTEM CONTROL

IC701

(2/2)

RADIO ON

MUTE

C

IC101(L-CH)

IC201(R-CH)

IC302 (2/2)

PRE AMP

IC1

FM/AM/TV

FRONT-END,

IF, DET, FM MPX

L4

D2

L3

AM FERRITE BAR

ANTENNA

CT1

D1

L7

L6

D4

L4

FM TRACKING

L7, CT1

AM TRACKING

DISPLAY BOARD (3/3)

MAIN BOARD (2/2)

T401 L401

D402

TUNER VCC

VCC

J301

i

SP101

SPEAKER

(L-CH)

SP201

SPEAKER

(R-CH)

DFTO MPXI LOUT

ROUT

PLT2

COMP

TUNE

BAND

RADIO ON

LPF OUT

MUTE

R-CH

AM

OSC

FM/TV

OSC

AMP B+

SWITCH

Q371-374

VCC

MIC VCC

R–CH IS OMITTED: SAME AS L–CH

BTL

POWER AMP

VOLUME

EXCEPT

CND, 5E

• Signal path.

F: FM

f: AM

a: REC

E: PB

• Abbreviation

CND : Canadian

5E : Indication of country of origin (DX, LOCAL)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

1010

WM-GX400

4-4. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) –

Note:

•X: parts extracted from the component side.

•a: Through hole.

•: Pattern from the side which enables seeing.

• Abbreviation

CND : Canadian

5E : Indication of country of origin (DX, LOCAL)

D402 B-6

D403 B-5

Q1 A-2

Q3 B-2

Q307 C-3

Q308 D-3

Q401 B-7

Ref. No. Location

zSemiconductor

Location

23 4 5 6 7 89 10 11

A

1

B

C

D

E

F

G

MAIN BOARD (SIDE A)

11

(11)

1-680-520-

S601

(TAPE POWER)

T331

R154

RV301

VOLUME

R313

R312

Q308

R281

R176

R177

R178

C179

C279

R278

R277

R376

R375

R201

C203

R604

R603

R609

C105

C335

R505

C186

EXCEPT CND,5E

CND,5E

R441

C187

R181

R180

C357

R280

R403

R402

C404

C403

C406

C402

C401

C407

Q401

L401

C405

R19

D402

R8

Q307

CT1

R6

Q3

R1

Q1

C2

R21

C16

JC3

C32

R10

R13

C25

R308

L4

C37

C30

C39

R159

R205

R105

C43

C42

C48

R352

R309

C49

C50

C53

C51

C375

D403

FB303

C410

RV1

RV2

R22

JC2

R404

BCE

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

WM-GX400

1111

4-5. PRINTED WIRING BOARD – MAIN SECTION (SIDE B) –

23 4 5 6 7 89 10 11

A

1

B

C

D

E

F

G

H

R152

IC1

C17

-1

-3

-2

-4

C204

R155

R360

Q354

D4

D1

C28

L6

C40

CN301

R307

FB201

FB101

D2

C10

R5

C11

R3

C7

FB301

R4

C8

C12

C9

C6

C5

C4

C606

C20

C23

R2

C21

C19

C18

R18

R11

C24

C29 C26

R15

R14

R20

R17

R256

C152

R255

R257

R359

Q405

R251

R357

C252

C255

C256 R204

R158

C156

R157

C151

C354

C155 C251

C355

Q356

R151

R356

TP1

110

11

20

21

30

31

40

R258

C101

C254

IC302

R252

R104

C104

R156

TP333

C154

Q355

R358

TP322

Q2

IC101

IC201

R606

RV602

TP324

TP329

TP316

C341

RV601

R106

R206

TH601

C356

R103

1

12

13

24

R343

TP301

C502

C176 C178

C180

C172

R173

R172

R171

Q101

C184

C276 C278

R276

C280

R273

R272

R271

R116

C272

Q201 R274

C374

Q373

R374

R373

Q372

Q371

R371

R203

R101

R107

C103

R602

R353

R207

C182

R601

C605

R614

C608

C603

C609

C602

C607

R607

R608

R605

C358

Q336

C340

R344

R306

Q301

C205

C34

TP306

C604

Q302

Q602

D501

C333

R337

Q334

C332 R336

Q335

C336

C337

C338

C339

R338

R339

R340

R341

R335 C334

Q601

R612 R613

R610

R611

Q603

CN303

CN302

1510 15 20 22

TP302

TP308

TP303

TP310

TP305

TP307

R502

TP315

TP314

TP313 TP403

TP317

TP318

TP311

TP309

TP319

C185

Q404

R305

R342

C282

Q502

R503

C331

R504

R501

C501

Q501

TP304

TP330

TP312

TP2

TP331

TP321

TP332

TP334

TP335

TP320

TP325

TP326

TP327 TP328

EXCEPT CND,5E

TP358

TP363

TP360

TP359

1

5

9

TP356

REV FWD

TP357

TP362

TP361

C201

TP472

TP471

C181

TP323

TP336

TP337

R279

Q374

R259

D406

C188

R372

R377

R283

C171

C271

R179

C44

R282

C177

C173

C273

C277

R174

T401

R254

C3

TP364

TP365

TP366

TP3

TP367

TP368

TP369

TP370

J302

MIC

(PLUG IN POWER)

FB302

D401

R401

C408

BLK

ORG

WHT

RED

C409

R378

IC301

C352

C503

C371

J501

L7

S301

(F/R SW)

S302

REC

PB

C504

1510 15 20 22

-2

-4

A

DISPLAY BOARD

CN701

B

DISPLAY BOARD

CN702

M601

REEL/CAPSTAN

MOTOR

M

ON OFF

PAUSE

11

(11)

1-680-520-

MAIN BOARD (SIDE B)

L3

AM

FERRITE CORE

ANTENNA

J301

i

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION LR6)

2PCS, 3V

DC IN 3V

S303

T

L-CH

R-CH

L-CH

FWD

ERASE

REV

1

2

3

4

5

HRPE301

REC/

PLAYBACK/

ERASE

HEAD

4

D1 C-10

D2 B-9

D4 B-9

D401 C-4

D406 C-6

D501 B-3

IC1 B-8

IC101 E-2

IC201 E-3

IC301 D-4

IC302 D-8

Q2 B-7

Q101 F-2

Q201 F-2

Q301 D-5

Q302 D-5

Q334 E-4

Q335 D-3

Q336 E-4

Q354 E-9

Q355 D-9

Q356 D-9

Q371 C-2

Q372 D-2

Q373 D-2

Q374 D-2

Q404 E-7

Q405 D-7

Q501 B-3

Q502 B-3

Q601 C-5

Q602 D-5

Q603 D-5

Ref. No. Location

zSemiconductor

Location

Note:

•X: parts extracted from the component side.

•a: Through hole.

•: Pattern from the side which enables seeing.

• Abbreviation

CND : Canadian

5E : Indication of country of origin (DX, LOCAL)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

1212

WM-GX400

4-6. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms. z Refer to page 18 for IC Block Diagram.

C3

C7

C12

R3

C8

R6

RV1

C17

C18

C19

TP1

R8 C21

C23

C37

R2

C4

C5

C6

C9

R4

C11

D406

R256

C201

R360

C354

C355

C352

FB302

C375

R378

Q355

R358

R359

C356

R251 R151

R357

R356

C151 R152

R258 C256

R201

R203

R254

R255

C254

C204

C10

C16

RV2

C44

CT1 C24

R14

C29

L7

R18

R19

C43

R13

C48

R10

C25

D4 R20

L6

C49

C30

R17

C42

D2 C26 C34

C40 R15

D1

C403

R404 D401

D402 C401 C402

C408

R401

C404 C405 R403 C407

R402

C406

Q307

R313

R312

C186

R505 C187

FB303

D403

C409 C410

C28

R105

R205

L401

CN301

IC1

Q3

C358 C152

C357

R159

C105

C156 R158

R156

C101

R155

C154

R154

C104 R107

R104 C103

R101

R103

R157 C155

C205

C252

R259

R204 R207

C203

R353

C255 R257

JC3

R352

C20 C39

R11

J302

C251 R252

R21

C32

Q401

Q308

Q356

Q354

IC302

C50

T401

R5

Q1

C2

R1

Q2

JC2

R22

L4

100p

470p

4.7

4V

2.2k

0.47

2.2k

4.7k

10

4V

0.022

0.022 10k 0.01

22

4V

2200p

0

0.1

1

22 4V

470

1

1SS367

2.2k

1

4.7k

22

4V

47

4V

4.7

4V

0.01

1k

2SC4116

1k

3.3k

47

4V

3.3k 3.3k

47k

10k

0.047 1k

10k 2200p

15k

330k

10k

6.8k

1

47

4V

100p

4.7

4V

100k

1000p

10p 0.022

100k

4700p

AM OSC

22k

100k

1000p

150

1000p

4.7k

4p

KV1471E 1k

27nH

1000p

10

4V

10k

1000p

KV1471E 0.01 0.01

0.01 100k

KV1520-TL

0.01

47k MA111

MA8130 1000p 1

10p

1k

0.01 22

4V 22 0.022

100k

5p

2SA1586

2.2k

47k

0.01

100k 0.01

1SS367

2.2

6.3V 0.01

470p

15k

22P

CXA1960Q

2SC3931

LPF

47

4V 0.01

1

10k

2200p

2200p 10k

2.2k

1

6.8k

1

10k

47

4V 220k

220 0.01

15k

330k

01

2200p

0.01

10k

220 220k

0.01

10k

10

0

1k

11000p

10k

0.047 1k

0

1000p

2SC3931

RN1311

2SA1586

RN1311

CXA2500N

1

DC DC CON

TRANCE

FM RF

12345678910 11 1213 14 15 16

*

FM IN

AVLS

N/R SW

REC

TAPE

MUTE

LED

GND

TUNER VCC

GND

LPF OUT

AM IN

MIC

MIC GND

MIC VCC

MONO

COMP

X SD

BAND

RADIO ON

BEEP

GND

REFERENCE

AGC TIME CONSTANT

TAPE/TUNER SERECTOR

PB/REC

VCC

GND

REC DRIVE OUTPUT(L) REC DRIVE OUTPUT(R)

REC DRIVE INPUT(L) REC DRIVE INPUT(R)

LINE OUTPUT(L) LINE OUTPUT(R)

TUNER INPUT(L) TUNER INPUT(R)

PB EQ SWITCH(L) PB EQ SWITCH(R)

PB OUTPUT(L) PB OUTPUT(R)

PB NF(L) PB NF(R)

PB PRE INPUT(L) PB PRE INPUT(R)

MIC INPUT(L) MIC INPUT(R)

SERECTOR

MPRM

V12M

MUTE

AAGC

DETO

MPXI

PLT2

PLT1

PLL1

PLL2

TVRO

REGV

FTLO

FMBF

AMLO

FALC

PLLO

COMP

BAND

TUNE

FMIB

IFCT

NC

MREF

ARFI

GND

FMRO

OLAG

DDCN

PLLI

STID

MCNT

GND

VCC

FM/AM/TV

FRONT-END,

IF,DET,FM MPX

VCO

MPRG

L OUT

R OUT

FM IN

TV IN

AM

ANTENNA

FERRITE ROD

AM TRACKING

L3

RV2

AM IF

FM VCO

MIC

(PLUG IN POWER)

FM TRACKING

CT1,L7

DC-DC

CONVERTER

TUNER B+

SWITCH

TUNER B+

SWITCH

GATE GATE

REC/PB AMP

PRE AMP

ATT

SWITCH

C2

JC2

Q1

R1

R5

R22

Q2

CND,5E

E,9E,CH,

470P 100P 100P

JC --

2SC4098 2SC4116 2SC4116

-RN1311

JC 47

-

-10k

47k

RN1311

47

10k

47k

FR AEP,EA,JEW

BOARD

DISPLAY

CN701

BOARD

MAIN

(2/2)

BOARD

MAIN

(2/2)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

WM-GX400

1313

4-7. SCHEMATIC DIAGRAM –MAIN SECTION (2/2) – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms. z Refer to page 19 for IC Block Diagram.

C53

C504

C503

R504

C502

C501

R502 R503

D501

FB201

FB101

FB301

R181 R281

C602

R602

C609 R604

R603

C603 C604 C608

R611 R613

R612

R610

R609

R605

C605

RV602

C606

C607

R374

R373

Q372

R371

C188

R372

R377 C185

C179

R178

R176

C177

C178

C176

C173

C171

C172

R273

R173

C181 C184

Q201

R172

R171

R271

R376 R375

R174

C277

C278

C271

C276

C273

R274

C272

R272

R277 R283

R276

R278

C279

R177

Q405

R282

R305

R306

C341

R307

Q404

R308

R309

CN303

C335

C336

C337

Q335

R340

R341 C339 C338 R339

R338

C334 Q336 R336

C332

C333

R337

R335

C340

R116

R441

S601

TP411 R343

R607

C51

C374

IC301

CN302

IC201

IC101

R344

C371

HRPE301

RV301

M601

J301

J501

S303

R501

C280

C180

R601

R614

TH601 R608

R342

C182

C282

Q301

Q302

Q101

T331

Q334

Q373

Q371

Q374

Q501

Q502

Q603

Q602

Q601

R606

RV601

R179

R279

R280

R180

R106

R206

1000p

220

4V

470

4V

150k

22

4V

1000p

4.7k 10k

1SS367

100k 100k

0.068

1M

0.47 1M

1M

0.068 0.068

0.22

100 100

47k

10k

1k

0.047

4.7k

2.2

6.3V

0.47

4.7k

0

2SC4116

10k

10

4V

150k

470 0.01

0.22

10

10k

22

4V

0.01

22

4V

2200p

1

47k

10.01

2SC4213

100

1k

1M 1M

100

22

4V

0.01

2200p

0.01

22

4V

100

1

100

10k 10k

10k

10

0.22

10k

2SC4213

10k

1k

1

100k

2SC4213

100k

150

9P

2200p

220p

470p

2SC4207

1k

47k 0.01 0.01 47k

1k

47

4V 2SC4116 10

0.01

1000p

10k

47

1

10k

100k

TAPE POWER SW

4.7k

100k

1000p

1

LB1979V

22P

NJM2073M

0

100

4V

MOTOR

(REEL/CAPSTAN)

680

1

1k

33k

3.3K

3900PPM 0

470

100

4V

100

4V

RN2307

2SC4116

2SC4213

2SD596-T1DV4

2SA1362

RN1307

2SC4116

2SA1362

2SC4207

RN1311

2SA1745

0

4.7k

1

2

3

4

5

12

10

7

68913 11 16

15

14

*

R

L

FWD

REV

FWD

REV

R

L

ERASE

MOTOR BRK

MOTOR CTL

AMP ON

PAUSE

BATT

GND

ISS 2

ISS 3

TAPE SPEED

VDD

SP-R +

SP-R -

SP-L +

SP-L -

FWD(L)

FWD(R)

REF

FWD ERASE

ERASE GND

REV ERASE

REF

REV(R)

REV(L)

VCC

A+IN

B+IN

OUT-B

A-IN

B-IN

OUT-A

GND

VCC

HP-L

HP-R

WB

VCC

NC

UOUT

V OUT

W OUT

P-GND

VB

UB

GND OSC

COM

S/S

VREF

IN+

VSP

OUT

RI

FC

FC GND

DC IN 3V

S301

FWD

REV

-1

-2

-3

-4

-1

-2

-3

-4

S302

PB

REC

VOLUME

R179

R279

R106

R206

R180

R280 22 22

22

100

68

470

68

220k 2.2k

220k

PAUSE

DRY BATTERY

SIZE"AA"

(IEC DESIGNATION LR6)

2PCS,3V

ERASE

PLAYBACK/

RECORD/

HEAD

COM

W

V

U

OFF ON

SWITCH

BTL POWER AMP

AVLS

MUTE

ISS SWITCH

OSC

BIAS

BIAS OSC

SWITCH

PROTECT

MOTOR

CONTROL

SPEED

DRIVE/

REG

MOTOR

BRAKE

MOTOR

BRAKE

MOTOR

BRAKE

TAPE SPEED 2.4cm/s

TAPE SPEED 4.8cm/s

CND,5E

E,9E,CH,

FR AEP,EA,JEW

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

1414

WM-GX400

11

(11)

1-680-521-

DISPLAY BOARD (SIDE A)

S704

AVLS

NORMAL

LIMIT

S703

ISS

3

2

1

S702

ON OFF

SPEAKER

S704

R720 C719

R721

3

2

1

IC702

R711

R709

R703

L702

R705

S705

EXCEPT CND,5E

MONO

ST

S705

FM

MODE

C752

R701

R752

S702

R753

R743

S712

ENTER

S708

FM

S710

OFF

S709

AM

S701

TUNING

ND701

LIQUID CRYSTAL

DISPLAY

CND,5E

LOCAL

DX

23 4 5 6 7 89 10

A

1

B

C

D

E

4-8. PRINTED WIRING BOARD – DISPLAY SECTION (SIDE A) –

Note:

•X: parts extracted from the component side.

•a: Through hole.

•: Pattern from the side which enables seeing.

• Abbreviation

CND : Canadian

5E : Indication of country of origin (DX, LOCAL)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

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WM-GX400

1515

4-9. PRINTED WIRING BOARD –DISPLAY SECTION (SIDE B) –

S706

NORMAL DOUBLE

REC TIME

S707

MANUAL PRESET

TUNING MODE

11

(11)

1-680-521-

DISPLAY BOARD (SIDE B)

B

MAIN BOARD

CN302

A

MAIN BOARD

CN301

MIC301

Flat Mic

SP201

SPEAKER

R-CH

SP101

SPEAKER

L-CH

IC701

X701

R702

R707

CN701

R722

R708

R726

R724

R718

R719

R741

R736

R737

C717 C718

C715

C713

C702 C720

C707

C708

R731

C710

C711

JC701

R725

R704

C706

C705

JC703

S706

ORG

BRN

WHT

GRY

C724

R723

TP731

TP704

TP734

TP721

TP718

TP720

TP722

TP723

TP719 TP707

TP717

TP725 TP727

TP726

TP724

TP710

TP737

TP714

TP744

TP747

TP728

TP729

TP730

TP705

TP703

TP706

C704

C722

C726

R715

R713

TP738

TP735

TP740

TP732

TP733

TP741

BLK

RED

R750

R751

C751

R739

C721

R728

C730

R714

R710 R712

R729

R730

R716

TP716

TP715

TP709

CN702

TP748

TP749

C712

R754

C732

BLK

TP750

R706

C727

(CHASSIS)

1510 15 20 22

23 4 5 6 7 89 10

A

1

B

C

D

E

Note:

•X: parts extracted from the component side.

•a: Through hole.

•: Pattern from the side which enables seeing.

• Abbreviation

CND : Canadian

5E : Indication of country of origin (DX, LOCAL)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

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1616

WM-GX400

4-10. SCHEMATIC DIAGRAM –DISPLAY SECTION – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms.

C721

R739

R727 R714

R712 R710

C704 C702

S712

S708 S709 S710

JC701

C720

C717 R737 C718

R754

C715

C713

R731 C708

C706

C705

C712

C707

L702

R751

R750

C751

C750

R729

R730

R753

TP750

C732

C722

C724

R743

R705

R728

R715

R722

C727

R723

R724

R725

R726

C726

R707

R721

C719

R720

R713

R711

R709

R706

R736

R716

ND701

IC701

R741

CN701

CN702

R752

R704

R703

R702

R701

IC702

S706(1/2) S706(2/2)

S701

S703

S702(1/2) S702(2/2)

S704

R718

R719

MIC301

SP201

SP101

X701

S707

JC703

C752

C711

S705

R708

0.1

1k

100k 100k

10p 4p 0.01

1000p 6.8k 0.47

2.2k

100p

100k 1

0.1

22

4V

0.1

3.3k

1

0.1

100k

330k

0.01

1

0.1

1k

10k

1k

4.7k

0.01

1k

0.01

1k

100k

0.047

100k

1k

10k

100k

LCD

LC72349W

10k

22P

330k

10k

XC62RP1602MR

10k

33k

75kHz

0

10

4V

1000p

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

S11

S12

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

S11

S12

COM1

COM2

COM3

COM4

COM2

COM3

COM4

COM1

*

FM IN

AM IN

LPF OUT

GND

MONO

COMP

BAND

X SD

RADIO ON

MIC

MIC GND

MIC VCC

AVLS

N/R SW

REC

TAPE

MUTE

LED

GND

MOTOR BRK

MOTOR CTL

AMP ON

PAUSE

BATT

GND

ISS 2

ISS 3

TAPE SPEED

VDD

SP-R +

SP-R -

SP-L +

SP-L -

TUNER VCC

VCC

HP-R

HP-L

BEEP

GND

FM AM

ISS

AVLS

LIMIT

Mic

Flat

NORM

3

2

1

FM MODE

LOCAL DX

MONO ST

REC TIME

NORMAL DOUBLE

REC TIME

NORMAL DOUBLE

TUNING MODE

PRESET MANUAL

OFF

ENTER

TUNING

SPEAKER

ON

OFF

SPEAKER

(L-CH)

SPEAKER

(R-CH)

BATT DETECT

LCD DRIVE

SYSTEM CONTROL/

EXCEPT

CND,5E

*R708

470

1.5k

10k

CND,5E

AEP,FR,CH,EA

E,9E,JEW

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

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17

WM-GX400

Common 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.

•C: panel designation.

•A: B+ Line.

•H: adjustment for repair.

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

supply from battery terminal.

• Voltage and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark : FM

( ) : AM

<< >> : REC

[ ] : PB

• 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

a: REC

N: MIC

• Abbreviation

CND : Canadian

FR : French

EA : Saudi Arabia

CH : Chinese

JEW : Tourist

E : Indication of country of origin (ST, MONO)

9E : No Indication of country of origin

5E : Indication of country of origin (DX, LOCAL)

1

IC401 CVOLT/DIV : 0.5 V AC

TIME/DIV : 0.1 µsec

– MAIN SECTION (1/2) –

zWaveforms

RADIO mode

3.2Vp-

p

26MHz

2

Q334 CVOLT/DIV : 0.5 V AC

TIME/DIV : 10 µsec

– MAIN SECTION (2/2) –

REC mode

2.9Vp-p

48KHz

3

IC701 1

XOUT

VOLT/DIV : 50 mV AC

TIME/DIV : 5 µsec

– DISPLAY SECTION –

265mVp-

p

75KHz

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

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18

WM-GX400

• IC Block Diagrams

IC302 CXA2500N-T4

IC1 CXA1960Q

+

–

12

13

14

19

15

TVIN

MREF

GND

FMIB

IFCT

NC

FMIN

FMR

O

OLAG

ARFI

REGV

TVRO

FTLO

BAND

TUNE

PLLO

FALC

COMP

37

38

39

40

AAGC

DETO

PLT2

MPXI

MPRM

V12M

MUTE

PLT1

PLL1

PLL2

MPX DECODER

AM BPF

PSN

1/X

FM/TV

LPF

PD VCO 1/2 1/2

STID

14V

PLAP

TUNE

38kHz

STEREO AUDIO R

STEREO AUDIO L

19kHz

1.65V

1.25V

36

8910

VCO

STID

MCNT

GND

VCC

14

2356

MPRG

LOUT

ROUT

DDCN

PLLI

7

+

–

+

–

35

34

FM DET

150kHz

FM LMT

OL DET

TV RF

AMP

FM RF

AMP

AM RF

AMP

45kHz

31

32

33

MUTE

AGC AMP

AM AGC

1.25V

AM/FM: 1/2

TV: 1/8

1.25V

18

17

16

FMBF

AMLO

AM OSC

FM/TV OSC

20

30 29 27

28 23

24

25

26 22 21

11

REFERENCE

MIC INPUT (A)

PB OUTPUT (A)

REC DRIVE INPUT (A)

REC DRIVE OUTPUT (A)

AGC TIME CONSTANT

TAPE/TUNER SELECTOR

1

2

PB PRE INPUT (A)

PB NF (A)

3

4

5

PB EQ SWITCH (A)

TUNER INPUT (A)

LINE OUTPUT (A)

6

7

8

9

10

11

12

REC DRIVE OUTPUT (B)

VCC

PB/REC SELECTOR

13

14

15

PB OUTPUT (B)

PB NF (B)

PB PRE INPUT (B)

MIC INPUT (B)

GND

20

21

22

23

24

TUNER INPUT(B)

PB EQ SWITCH (B)

18

19

REC DRIVE INPUT (B)

LINE OUTPUT (B)

16

17

TAPE/

TUNER

REF AGC

MIC

NORM/

METAL

GCA

PB LINE REC

AGC

DET

AMP

AGC

MIC GCA

PB LINE REC

AGC

DET

AMP

MIC GCA

PB LINE REC

AMP

PB/

REC

6dB 22dB 12dB -0.3dB 20.5dB

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

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19

WM-GX400

IC301 LB1979LV-TLM

IC101, 201 NJM2073M

1

2

3

4 5

6

7

8A.–

A.+

B.+

B.–

A.OUT

B.OUT

VDD

GND

FC GND

VCC

FC

WB

VCC

NC

UOUT

VOUT

WOUT

P-GND

VB

UB

GND

TO

CONTROL

BLOCKS

TO

EACH

BLOCKS

RI

OUT

VSP

IN+

VREF

S/S

COM

OSC

75

4

31 2 6 8 9 10

1112131415161820 19

STARTING

DETECT

POWER

SUPPLY

BIAS

OSCILLATING

CIRCUIT

SPEED CONTROL

REFERENCE VOLTAGE

REFERENCE

VOLTAGE

CURRENT

DETECT

SPEED

DETECT

WAVEFORM DETECT

COMMUTATION STARTING LOGIC

SOFT SWITCH

PRE DRIVER

+

–

17

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

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20

WM-GX400 SECTION 5

EXPLODED VIEWS

NOTE :

• -XX, -X mean standardized parts, so they

may have some difference from the original

one.

• Items marked “ * ”are not stocked since they

are seldom required for routine service. Some

delay should be anticipated when ordering

these items.

• The mechanical parts with no reference

number in the exploded views are not

supplied.

• Abbreviation

CND : Canadian

FR : French

EA : Saudi Arabia

CH : Chinese

JEW : Tourist

E : Indication of country of origin

(ST, MONO)

9E : No Indication of country of origin

5E : Indication of country of origin

(DX, LOCAL)

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

5-1. CABINET (REAR) SECTION

1 3-328-319-01 STRAP, HAND

2 3-225-573-31 CABINET (FRONT)(EXCEPT CND,5E)

2 3-225-573-41 CABINET (FRONT)(CND,5E)

3 3-225-572-11 BUTTON (REC)

4 3-225-569-11 BUTTON (STOP)

5 3-225-568-11 BUTTON (PLAY)

6 3-225-571-11 BUTTON (REW)

7 3-225-570-11 BUTTON (FF)

*8 A-3021-364-A MAIN BOARD, COMPLETE

(AEP,E,9E,CH,EA,JEW)

*8 A-3021-367-A MAIN BOARD, COMPLETE (CND,5E)

*8 A-3021-369-A MAIN BOARD, COMPLETE (FR)

9 3-927-521-01 CUSHION (BATTERY CASE LID)

10 3-225-577-11 LID, BATTERY CASE

11 3-226-525-01 TERMINAL (+)

12 3-345-648-95 SCREW (M1.4), TOOTHED LOCK

13 3-226-526-01 TERMINAL (–)

14 3-225-576-31 CABINET (REAR) (EXCEPT 9E)

14 3-225-576-41 CABINET (REAR) (9E)

15 3-318-203-92 SCREW (B1.7X9), TAPPING

16 3-226-542-01 KNOB (PAUSE)

17 3-389-523-23 SCREW (IB LOCK)

1

2

17

16

15

14

11

10

9

12

8

13

12

7

6

5

4

3

w

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6

3

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c

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3

7

6

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1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

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Q

TEL 13942296513 QQ 376315150 892498299

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Sony Walkman WM-GX400 User manual

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