Sony XM-440EX Primary Bedienungsanleitung

MICROFILM

XM-440EX/440NX

SERVICE MANUAL

STEREO POWER AMPLIFIER

SPECIFICATIONS

Canadian Model

AEP Model

E Model

XM-440EX

UK Model

XM-440NX

Photo : XM-440EX

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

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

2. DISASSEMBLY

2-1. Main Board Removal ...................................................6

3. DIAGRAMS

3-1. Block Diagram..............................................................7

3-2. Printed Wiring Boards ..................................................9

3-3. Schematic Diagrams –MAIN (1/2) Section –.............10

3-4. Schematic Diagrams –MAIN (2/2) Section –.............11

4. EXPLODED VIEW...................................................... 12

5. ELECTRICAL PARTS LIST.................................... 12

TABLE OF CONTENTS

SECTION 1

GENERAL This section is extracted from

instruction manual.

SECTION 2

DISASSEMBLY

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

2-1. MAIN BOARD REMOVAL

Two screws (+BTP3x4

)

Two screws (+BTP3x4)

Bottom plate

Screw

(+BTP3x8)

Two screws

(+BTP3x6)

Two screws

(+BTP3x8)

Screw

(+BTP3x4)

Screw

(+BTP3x4)

Main board

(Remove the direction of arrow)

Two screws

(+BTP3x8)

Two screws

(+BTP3x6)

Heat sink

XM-440EX/440NX

SECTION 3

DIAGRAMS

3-1. BLOCK DIAGRAM

DIFFERENTIAL

AMP

Q263

PRE

AMP

IC101 (2/2) IC202 (1/2)

CN303

INPUT FILTER

(MONO)

HIGH

LEVEL

INPUT

FILTER

CN904

IC203 (1/2)

3 1

H.P.F

IC202 (2/2)

6 7

L.P.FRV101 (2/4)

FILTER

SW101 (2/2)

LEVEL

RV102

HPF

RV101 (4/4)

IC203 (2/2)

6 7

L.P.F

FILTER

OFF

LPF

1DRIVE AMP

Q204

DRIVE AMP

Q204

DRIVE AMP

Q204

DRIVE AMP

Q204

DIFFERENTIAL

AMP

Q263

DRIVE AMP

Q204

DRIVE AMP

Q204

DRIVE AMP

Q204

DIFFERENTIAL

AMP

Q202

REAR

SPEAKER

OUT

REAR

DIFFERENTIAL

AMP

Q263

PRE

AMP

IC101 (2/2) IC202 (1/2)

INPUT

CNJ301

(3/4)

CNJ301

(4/4)

FILTER

IC203 (1/2)

3 1

H.P.F

IC202 (2/2)

6 7

L.P.FRV101 (2/4)

FILTER

SW101 (2/2)

LEVEL

RV102

HPF

RV101 (4/4)

IC203 (2/2)

6 7

L.P.F

FILTER

OFF

LPF

1DRIVE AMP

Q204

DRIVE AMP

Q204

DRIVE AMP

Q204

DRIVE AMP

Q204

DIFFERENTIAL

AMP

Q203

PRE

AMP

IC101 (2/2) IC202 (1/2)

CN302

INPUT FILTER

(MONO)

HIGH

LEVEL

INPUT

FILTER

IC203 (1/2)

3 1

H.P.F

IC202 (2/2)

6 7

L.P.FRV101 (2/4)

TEST TONE

SW501

TO REAR

FILTER

SW101 (2/2)

LEVEL

RV102

HPF

RV101 (4/4)

IC203 (2/2)

6 7

L.P.F

FILTER

OFF

LPF

DRIVE AMP

Q204

DRIVE AMP

Q208

BIAS

Q206,207

POWER AMP

Q210

DIFFERENTIAL

AMP

Q202

DRIVE AMP

Q205

DRIVE AMP

Q209

POWER AMP

Q211

OVER ROAD

DET

Q212

L+R

FRONT

DIFFERENTIAL

AMP

Q103

PRE

AMP

IC101 (1/2) IC102(1/2)

INPUT

CNJ301

(1/4)

CNJ301

(2/4)

FILTER

LINE

SWITCH

Q101

LINE

SWITCH

Q201

IC103 (1/2)

3 1

H.P.F

IC102 (2/2)

6 7

L.P.FRV101 (1/4)

FILTER

SW101 (1/2)

LEVEL

RV102

HPF

RV101 (3/4)

IC103 (2/2)

6 7

L.P.F

FILTER

OFF

LPF

DRIVE AMP

Q104

DRIVE AMP

Q108

BIAS

Q106,107

POWER AMP

Q110

DIFFERENTIAL

AMP

Q102

DRIVE AMP

Q105

DRIVE AMP

Q109

POWER AMP

Q111

OVER ROAD

DET

Q112

OP AMP

IC501 (2/2)

IC501 (1/2)

CN901

REMOTE

12 REF-REG

INVERTER

Q918

INVERTER

Q917

D904

DRIVER

Q915

T901

DC-DC CONVERTER

TRANSFORMER

PROTECTOR

Q904,905

D908

D910

B3+

B1+

B2+

B1-

B2-

B3-

D911

DC DET

PH902

DC-DC

CONVERTER

IC901

DRIVER

Q916

+12V

GND

POWER

ON/OFF

Q903

SWITCH

Q901,902

TEMP • DET

TH902,903

LINE CONTROL

Q921,922

POWER/

PROTECTOR THERMAL LED

DRIVE

Q908

LED

DRIVE

Q906,907

OFFSET

DET

Q923-925

B+REG

Q919

B-REG

Q920

CN903

MONO

L+R MONO

D905

POWER/

PROTECTOR OVER CURRENT

D907 POWER/

PROTECTOR OFF SET

D906

SWITCH

Q909,910

SWITCH

Q911,912

SWITCH

Q913,914

(REAR)

• Signal path

F: AUDIO

FRONT

SPEAKER

OUT

XM-440EX/440NX

• IC BLOCK DIAGRAM

IC901 TL494CN

• WAVEFORMS

12.8Vp-p

sec

12Vp-

sec

28Vp-

sec

56Vp-

sec

12 3 5 6 7 8

91016 15 14 13 12 11

ERROR

0.1V

REG.

REF.

OSC

ERROR

THIS NOTE IS COMMON FOR

PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS.

(In addition to this, the necessary

note is printed in each block.)

For schematic diagrams.

Note:

• All capacitors are in µF unless otherwise

noted. pF:µµF 50 WV or less are not in-

dicated except for electrolytics and

tantalums.

• All resistors are in Ωand 1/4W or less un-

less otherwise specified.

•C: panel designation.

•U: B+ Line.

• Power voltage is dc 14.4V and fed with

regulated dc power supply from ACC and

BATT cords.

• Voltages and waveforms are dc with re-

spect to ground under no-signal condi-

tions.

no mark : POWER ON

*: Impossible to measure

• Voltage are taken with a VOM (Input im-

pedance 10 MΩ).

Voltage variations may be noted due to

normal production tolerances.

• Signal path.

F: AUDIO

For printed wiring boards.

Note:

•X:parts extractedfrom the compo-

nent side.

XM-440EX/440NX

3-2. PRINTEDWIRING BOARDS

• Semiconductor Location

D101 A-6

D102 A-6

D201 A-4

D202 B-4

D301 C-6

D302 C-6

D401 C-4

D402 C-4

D501 D-8

D901 D-1

D902 D-1

D903 D-3

D904 D-2

D908 E-5

D909 E-5

D910 E-5

D911 F-5

D912 F-6

D913 F-6

D914 D-5

D915 D-5

D916 B-1

D917 B-2

D918 E-4

D919 E-4

D971 D-3

IC101 E-7

IC102 A-7

IC103 A-7

IC202 B-7

IC203 B-7

IC301 F-7

IC302 C-7

IC303 C-7

IC402 C-7

IC403 C-7

IC501 D-7

IC901 D-4

Q101 B-6

Q102 A-6

Q103 A-6

Q104 A-5

Q105 A-5

Q106 A-5

Q107 A-5

Q108 A-5

Q109 A-5

Q110 A-5

Q111 A-6

Q112 A-4

Q201 B-6

Q202 A-4

Ref. No. Location Ref. No. Location

Q203 A-4

Q204 A-3

Q205 A-3

Q206 A-3

Q207 A-3

Q208 A-3

Q209 A-3

Q210 A-3

Q211 B-3

Q212 B-2

Q301 C-6

Q302 C-6

Q303 C-6

Q304 C-5

Q305 C-5

Q306 C-5

Q307 C-5

Q308 C-5

Q309 C-5

Q310 C-5

Q311 C-5

Q312 C-4

Q401 D-6

Q402 C-4

Q403 C-4

Q404 C-3

Q405 C-3

Q406 C-3

Q407 C-3

Q408 C-3

Q409 C-3

Q410 C-3

Q411 D-3

Q412 C-2

Q901 E-2

Q902 D-2

Q903 D-1

Q904 E-2

Q905 E-2

Q906 D-2

Q907 D-2

Q908 D-2

Q915 F-4

Q916 E-4

Q917 E-3

Q918 F-3

Q919 F-6

Q920 F-6

Q921 D-6

Q922 D-5

Q923 B-2

Q924 B-2

Q925 B-2

MAIN BOARD

234567 8

1-677-700-

11-677-341- 11

R934

R928

R927

R931

R929

R933

R932

R980

R937

R936

R935

R942

Q911

Q913

Q914

Q910

Q909

D906 D907 D905

PN901

Q915

LED BOARD

V+

GND

THR

CUR

OFF

FILTER

RV301

FILTER

RV101

R140

R147

C115

R240

R247

R239

R139

R236

R238

R237

C215

C931

R961

R964

R963

C932

R962

R965

R966

C940

C941

C933

C934

D916

D917

Q924

Q923 Q925

Q212

J166

J174 R233

R339

R439

R340

R347

C315 J173

J170

J171

R438

R437

J165

R433

R436

J156

R440

R447

J172

C415

Q412

J922

J924

J923

R940

R432

R967 R938

R905

R906

R904

D902

Q903

R902

R901

C903

Q902

D901

J620

R925

R926

C912 Q908

Q906

R923

J619

Q907

R924

R903

J909

J908

J910

J911

J912

C901

J621

R939

R930

D904

C911

R920

Q904

Q905

R921

R919

C909

J901

J902

CN901

C913

J913

C914

R918

R972

R917

R915 R971

C910

R922

J622

D971

D903

R913

J623

C906

J916

J915

J914

J919

J918

J917

C915

C902

J144

F901

J904

J903

J907

J906

J905

C939

L901

Q901

Q918

Q917

PL901

C916

R951

TH901

J926

R916

J921

J920

R946

R947

Q916

R948

R945

R943

Q926

T901

R941

R973

R944

D908

D919

D918

D909

R927

D913

J930

J929

D912

J931

D911

D910 J933

J932

R949

R950

C922

C921

Q920

Q919

J934

C926

C925

C923

C924

C904 C905 C907

R910

R908

C908

R914

J624

C920

C919

J625

16 9

J928

IC901

PH901

R954

R953

R955

R952

J629

R956

C930

D915

D914

Q922

J948

Q921

C917

J938

J955

C918

J936

R354

C311

J118

R353

R453

Q301

Q401

J148

J155

J154

R334

R335

R324

R326

R325

R319

R318

D302

R320

R321

R322

Q302

Q303

R317

D301

C313

R323

J927

J937

R330

Q307

C312

R329

R328

R327

J956

J965

R331

R332

J147

J954

R336

R337

Q312

J645

R338

J945

J925

J150

J149

J168 J941

J152

J159

J158

J177

J960

J950

J953

J947

J946

Q306

Q304

BJ102

BJ103

Q305

Q309

Q308

Q310

Q311

R124

R126

R125

R119

R118

D102

R120

R121

R122

D101

C114

Q107

C112

R129

R128

R127

R132

J146

Q112

J951

Q106

Q104

R133

Q105

Q109 Q108

Q110

Q111

R138

R137

R136

J949

R131

J145

R123

R154

R153

J944

C111

R253

Q101

Q201

R134

Q102

Q103

R117

C113 R135

J943

R130

C314

J942

R454

C411

R434

D402

R435

Q403

Q402

R417

R419

R418

R422

R420

R421

C413

R423

R424

R426

R425

R430 J646

J163

J153

R431

D401

C412

Q404

Q405

Q408

C414

Q409

Q407

R429

R428

R427

Q406

J160

J169

J940

Q410

Q411

J666

J665

J167

J164

J952

TH902 TH903

R232

R254

C211 R234

D202

R235

Q203

Q202

R217

R219

R218

R222

R220

R221

C213

R223

R224

R226

R225

R230 J626

J162

J157

R231

D201

C212

Q204

Q205

C214

Q207

R229

R228

R227

Q206 Q208

J176

J161

Q210

Q211

J964

J611

R108

R107

C105 C152

R105

R109

R106

R110

R111

R151

R211

R212

R112

J615

R213

R208

J610 R210

R209

J612

J616

C106 C108 C109

J143

J142

J141

J139

J138

C151

C209

C206 C207

C107

IC102 IC103

IC202 IC203

R113

J136

J137

J614

J613

J135

J133

J130

J131

J134

C208

C251

R152

R252

R251

C252

R207

C205

R205

R206

R214

R114

C309

C210

C110 R311

R310

C308

J132

J607

R308

J128

IC302 IC303

R411

R412

R312

J609

R351

R413

J127

C306

C307

R313

J605

R352 R314

R452

J604

-2 -4-3 -1

RV301

-2 -4-3 -1

RV101

S101

RV102

RV302

S501

CN301

CN303

R504

R503

C452 C352

C351 C409

J608

J126

J125

C408

R410

J601

J124

C406

R307

C305

R305

R309

R306

J606

J600

J122

J121

J123

J120

J618

R408

IC402 IC403

R405

R409

R407

C405

J116

J117

J119

C451

R451

R406

R414

C310

C501

C502

R501

R502

R505

C407

J115

C410

R512

J602

J114

C504

R507

R508

R510

R509

R506

IC501

J603

C505

D501

C219

C220

C120

R511

C119

C503

BJ101

R242

R243

R241

R201

C217

C218

R204

C204

C118

C117

J111

C203

R203

J664

C103

R103

R141

R143

R101

R102

C104

R104

R142

J630

R202

J105

IC101

C202

C201

C101

C102

C116

R957

C935

R958

C936

J112

J106

C401

C402

C301

C302

C416

C937

R959

R401

R404

C404

C928

C929 IC301

R443

C403

R441

J665

J107

R960

C938

J108

J109

J632

C304

R304

R342

R402

R442

R403

C303

R341

R302

R343

C418

C417

R301

R303

C319

C318

C317

C419

C420

C320

R444

R344

J104

J103

J101

J102

R144

R244

J113

C316

C216

R912

R911

R907

R909

FILTER

LPF

RV102

S101

LEVEL

OFF

HPF

FILTER

FRONT

FILTER

LPF

S301

LEVEL

RV302

TEST TONE

S501

OFF

HPF

FILTER

REAR

HIGH

LEVEL

INPUT

CN303

HIGH

LEVEL

INPUT

FRONT

REAR

INPUT

CN302

L+R

MONO

FRONT

SPEAKER OUT

CN903

CN904

MONO

REAR

SPEAKER OUT

GND

+12V

REMOTE

CN901

CN902

L+R

F901

30A

Q209

R333

-2 -1

S301

-2 -1

(MONO) (MONO)

OFF SET

OVER

THER

GND

XM-440EX/440NX

3-3. SCHEMATIC DIAGRAMS – MAIN (1/2) SECTION –

• See page 8 forWaveforms.

• See page 9 for PrintedWiring Boards.

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