JVC SP-PW880 Manuale utente

SERVICE MANUAL

POWERED SUBWOOFER

No.20863

Jul. 2000

din Japan

07(V)

SP-PW880

Contents

Safety Precautions

Disassembly method

Description of major ICs

1-2

1-3

1-6

Area Suffix

Continental Europe

Northern Europe

Singapore

SP-PW880

!Burrs formed during molding may be left over on some parts of the chassis. Therefore,

pay attention to such burrs in the case of preforming repair of this system.

Safety precaution

1-2

SP-PW880

1-3

Remove the saran board assembly from the cabinet

assembly while releasing the four corner joints

toward the front.

Remove the eight screws A attaching the speaker.

Disconnect the fasten connected to the speaker

terminal on the back of the speaker.

Disassembly method

Removing the speaker (See Fig.1 and 2)

Remove the two screws B attaching the LED

indicator board assembly on the front side of the

speaker box.

Disconnect the harness from connector CN404 on

the LED indicator board assembly.

Remove the two screws C and the panel.

Removing the LED indicator board

assembly (See Fig.3)

Removing the amplifier assembly

(See Fig.4)

Remove the eleven screws D attaching the amplifier

board on the back of the body.

Disconnect each relay harness connected to the

speaker and the LED indicator board.

Fig.1

Fig.2

Fig.3Fig.4

Joint 4 Cabinet assembly

Saran board assembly

Speaker

LED indicator board assembly

Harness

LED indicator board assembly

Panel

Amplifier board

SP-PW880

1-4

Pull out the volume knob from the amplifier.

Remove the three screws E and the two screws F

on the amplifier.

Removing the cover (See Fig.5)

Cut off the band under the input board assembly.

Disconnect the harness from connector CN851.

Remove the two screws G attaching the input

amplifier / filter board assembly. Pull and disconnect

connector CN811 from the body.

Removing the Input board assembly

(See Fig.6)

Removing the amplifier board assembly

(See Fig.7 and 8)

Prior to performing procedure, remove the input

amplifier / filter board assembly.

Disconnect the harness from connector CN891 and

CN881 on the amplifier board assembly.

Remove the six screws H attaching the amplifier

board assembly.

Remove the two screws I attaching the heat sink 1

and the two screws J attaching the heat sink 2

respectively.

Fig.5

Fig.6

Fig.7Fig.7

Volume knob

Cover

(Only US)

Input board

assembly

CN811

CN851

Band

Amplifier board assembly

CN891

CN881

Heat sink 2

Heat sink 1

Amplifier board assembly

SP-PW880

1-5

Cut off the three bands fastening the harnesses

extending from the transformer assembly.

Disconnect the harness from connector CN891 on

the amplifier board assembly and from CN899 on the

power board assembly.

Remove the four screws K attaching the transformer

assembly.

Removing the transformer assembly

(See Fig.9)

Disconnect the harness from connector CN899 on

the power board assembly.

Remove the three screws L assembly.

Remove the cord stopper.

Removing the power board assembly

(See Fig.10)

Fig.9

Fig.10

Bands

Amplifier board

assembly

CN891

Band

Power board

assembly

CN899

Transformer assembly

CN899

Power board

assembly

Cord stopper L

SP-PW880

1-6

TR1 TR2

R2 C1

TR3 TR4

D6 R4

TR6

TR5

R7 TR7

R51

TR9

TR8 TR12

TR10

TR11 TR23

TR24

TR22

TR21 R14

R16

R19 TR20

R15

R16

R17

TR19

R18

TR14 TR13

C3 R12

TR16TR15

TR17

R13

TR31 R31

D31

D32

TR32

R32

Comparator

D34

D36

D35

D33

SUB

21 22 916 10 14 15 11

12 13

STK411-290E (IC821) : Power amplifier

Description of major ICs

Printed in Japan

200007(V)

VICTOR COMPANY OF JAPAN, LIMITED

AUDIO & COMMUNICATION BUSINESS DIVISION

PERSONAL & MOBILE NETWORK B.U. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

No.20863

SP-PW880

ABC

SP-PW880

2-1

LVA10058-A2

66-000-074-11

LVA10058-A1

LVA10058-A3

IC811

IC813

2/2

IC813

2/2

IC811

Q8101

Q8102

IC851

Q8501

Q8502

1/2

IC812

2/2

VR811

-VH

CN811 CN821

CN881

IC812

IC821 Q8204 RY881

1/2

S8101

18 14

Q8201 Q8202

Q8203

SP-PW880

Block diagram

Input L/H amp

LED control

Regulator

(5V) Regulator

(9V)

CN851

CN861

CN891

Power circuit

DC detector

High path

filter

Power amp Output current

detector Relay Speaker

Low path

filter Buffer

ABCD E F G

2-2

SP-PW880

Parts are safety assurance parts.

When replacing those parts make

sure to use the specified one.

Input circuit

LED indicator circuit

Power amplifier circuit

Power supply circuit

Playback signal line

Standard schematic diagrams

IC811

IC812

IC813

R8105R8103

R8104

R8124

R8118

R8119

R8120

R8123

R8126

R8107 R8109

R8111 R8112

R8115

R8113 R8114

R8117

R8116

C8103

C8112

C8113

C8101

C8102

C8111

VR811

CN899

R8121

C8104

C8105

C8106

C8107

C8109

C8108

IC851

IC851 IC851 IC851

CN881

C8504 C8506

C8508

C8501 C8503

R8514 R8515

R8518

R8517

R8519

R8504

R8505

R8506

R8507

R8521

C8917

R8522

R8523

D8507

D8502 D8503

D8504

D8508

D8509

C8507

IC813

Q8501

Q8801

C8505

IC861

R8801

R8224

CN851

CN861

D8602 D8601

R8601

R8803

Q8701

R8704

R8701

R8703

D8701

D8702

R8702

Q8702

C8924

C8925

C8914

IC821

R8223

F8911

F8921

R8922

PP892

S8901 PP891

C8901

D8201

R8208

D8202

D8205 D8206

R8202

R8203

C8203

C8204

C8213

R8213

D8911 D8921

C8928

L8201

C8210

R8219

R8222

RY881

R8217

C8201

IC851

C8927

D8511

D8603

F8901

R8802

C8219

T8901

S8101 C8218 C8217

C8252

R8252

C8233

C8234

R8127

R8101

R8102

R8125

R8106

R8108

R8110

C8114

C8115

C8116

R8122

D8510

Q8102

C8110

R8227

R8226

R8225

R8705

C8502

R8516

R8503

R8502

R8501

R8512

R8811

R8812

D8505

D8506

D8501

Q8502

R8520

Q8203

J8101

J8102

C8701C8702

C8703C8704

R8229

C8921

C8922

C8911

C8912

C8915

CN821

CN811

CN891

R8209

R8204

R8205

R8201

C8202

R8207

C8214

D8208

R8212

R8215

R8211

R8214

R8210

D8207

R8216

D8924

C8207

C8208C8209

R8921

Q8204

Q8201

Q8202

C8211

D8209

R8221

R8218

R8220 R8206

C8205

D8801

C8212

C8232

Q8101

C8801

C8215

C8206

R8228

D8212

D8211

R8233

C8253

C8121

C8231

C8122

R8128

NJM4580D-D

68K56K

56K

150K

5.6K

100K

1.6K 2.4K

11K 10K

10K

15K

12K

3.9K

39K

0.01

0.022

10/50

QVQ0021-B14

QGA7901C1-02

150K

0.22 0.22

0.33

0.056

0.047

0.033

TC74HCU04AP

TC74HCU04AP TC74HCU04AP TC74HCU04AP

QGA3901C1-02

10/50 10/50

470/6.3

22/25 100/25

4.7K

560K

510K

100K

2.2K

0.1/100

180

1SS133-T2

1SS133-T2 1SS133-T2

1SS133-T2

0.01 NJM4580D-D

KTC3199/GL/-T

2SC945/PK/-T

100P

UPC78L05J-T

56K

QGA2501C1-02

1SS133-T2 1SS133-T2

180

2SD400MP/EF/-T

1.5K

MTZJ10B-T2

2SB544MP/EF/-T

0.1

0.1/100

STK411-290E

56K

4.7

QSW0632-001

0.068

MTZJ8.2C-T2

10K

MTZJ8.2C-T2

MTZJ33C-T2 MTZJ33C-T2

100

100/50

10/50

8.2P/50

D5SBA20-S1 D5SBA20-S1

2.2/50

QQLZ005-R45

10/25

100K

82K

QSK0095-001

100K

100P/50

TC74HCU04AP

0.1

MTZJ6.8B-T2

SPR-325MVW

1/50

QQT0265-003

QSW0834-001 10/50 10/50

0.1

150P/50

470K470K

47K

220K

12K

150K

1000P

1/50

5.6K

1SS133-T2

KTC3199/GL/-T

3300P

56K

560

33K

100/10

47K

100K

12K

4.7K

6.2K

4.7K

1SS133-T2

KTC3199/GL/-T

4.7K

KTC3199/GL/-T

QNN0090-001

QNB0095-001

47/25

100/25

0.33

6800/25

4700/50

0.1/100

QGB2016K1-15

QGB2016J1-15

QGA3901C1-05

100K

2.7K

100/50

0.1

1SS133-T2

1.2K22K

0.33

10K

0.33

1SS133-T2

DSK10C-T1

220P/50

0.220.22

33K

KTA1267/YG/-T

KTC3199/GL/-T

KTA1267/YG/-T

47/25

1SS133-T2

100K

10K

10K 56K

470P/50

1SS133-T2

100/16

100P/50

KTC3199/GL/-T

1/50

100/25

2.2/50

220

1N5402M-20

4.7K

0.01/16

10/50

150P/50

150P

F8902

PP892

S8901

PP891

C8901

F8901

CN899

S8902

QSW0632-001

0.068

QGA7901C1-04

QSW0838-001

Only E/EN Only US

R8801

R8802

R8803

1.8K 1/4W

2.2K 1/4W

E/EN US

Deference part

T8901

QQT0265-004

HABC DE FG

2-3

SP-PW880

T1A

B6301

B6302

CN899

PP891

PP892

S8901

F8901

Z897 Z898

C8901

S8902

Z896

F8902

Z899

C8101

C8102

C8103

C8104

C8105

C8106

C8107

C8108

C8109

C8110

C8111

C8112

C8113

C8114

C8115

C8116

C8501

C8502

C8503

C8504

C8505

C8506

C8507

C8508

C8509

B8006

CN851

D8501

D8502

D8503

D8504

D8505

D8506

D8507

D8508

D8509

D8510

D8511

IC861

IC811

IC812

IC813

IC851

J8101

Q8101

Q8102

Q8501

Q8502

R8101

R8102

R8103

R8104

R8105

R8106

R8107

R8108

R8109

R8110

R8111

R8112

R8113

R8114

R8115

R8116

R8117

R8118

R8119

R8120

R8121

R8122

R8123

R8124

R8125

R8126

R8501 R8502

R8503

R8504

R8505

R8506

R8507

R8512

R8513

R8514

R8515

R8516

R8517

R8518

R8519

R8520

R8521

R8522

R8523

S8101

VR811

CN811

B8201

B8004

B8005

B8009

B8008

B8002

B8001

B8301

B8003

B8007

B8601

C8121

C8122 B8006

R8127

R8128

B7001

C8219

C8201

C8202

C8203

C8204

C8205

C8206

C8207

C8208

C8209

C8210

C8211

C8212

C8213

C8214

C8215

C8216

C8217

C8218

C8701

C8702

C8703

C8704

C8801

C8911C8912

C8913

C8914

C8915

C8916

C8917

C8921C8922

C8923

C8924

C8925

C8926

C8927

C8928

CN821

123

456789101112131415

CN881

CN891

D8201

D8202

C8231

C8235

D8205

D8206

D8207

D8208

D8209

D8211

D8212

D8701

D8702

D8801

D8911

D8921

D8924

IC821

L8201

Q8201

Q8202

Q8203

Q8204

Q8701

Q8702

Q8801

R8201

R8202

R8203

R8204

R8205

R8206

R8207

R8208

R8209

R8210

R8211

R8212

R8213

R8214

R8215

R8216

R8217

R8218

R8219

R8220

R8221

R8222

R8223

R8224

R8225

R8226

R8227

R8228

R8229

R8233

R8701

R8702

R8703

R8704

R8705

C8237

R8801

R8802

R8803

R8811

R8812

R8921

R8922

RY881

Z892

Z893

Z894Z895

B7852

B7204

C8223

B7206

B7207

B7851

B7020

B7009

B7010

B7008

B7004

B7003

C8222

B7011

B7952

C8236

B7404

B7211

EP881

R8254

B7304

B7403

B7016

B7951

W8801

B7208 B7702

B7953

B7701

B7202

B7007

B7402

C8252

B7502

B7012

W8912

B7205

B7301

B7501

B7201

B7401

B7203

C8232

B7013

B7018

C8233

B7210

B7017

C8234

W8911

B7014

C8254

C8255

W8921

W8931

R8255

W8951

C8253

R8252

WC881

B7303

F8911

F8921

R8601

D8602

D8601

D8603

CN861

LED indicator board

Input board

Power board

Amplifier board

Printed circuit boards

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