JVC CS-BB2J Manuale utente

SERVICE MANUAL

2006/3

ACTIVE SUBWOOFER SYSTEM

MA25220063

CS-BB2J, CS-BB2U

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

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1-2 (No.MA252)

SPECIFICATION

Design and specifi cations are subject to change without notice.

Type Closed Active Subwoofer (Built-in amplifi er)

Speaker Unit 14 cm (5-9/16 in.) cone

Input Terminal LINE IN (1 system), 0.19 V/25 kΩ

SPEAKER (1 system), 3.7 V

Power Output 32 W RMS x 2 channels at 2 Ωand [< or =] 1% THD + N

Signal-to-Noise Ratio 75 dBA (reference: 1 W into 2 Ω)

Maximum Amplifi er Power Output 60 W + 60 W (Impedance 2 Ω+ 2 Ω)

Cut-off Frequency 110 Hz (L.P.F. switch "ON", -12 dB/oct low pass fi lter)

Crossover Frequency 20 Hz to 200 Hz (L.P.F. switch "ON")

20 Hz to 500 Hz (L.P.F. switch "OFF")

Sound Pressure Level 88 dB/ m (with line input: 0.03 V)

Level Control -50 dB to 0 dB (Center) to + 10 dB

Power Requirement DC 14.4 V (11 V to 16 V allowance), Negative ground

Dimensions (W/H/D) 290 mm ×60.5 mm ×200 mm (11-7/16 in. ×2-7/16 in. ×7-7/8 in.)

Mass 2.1 kg (4.7lbs) (Excluding accessories)

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(No.MA252)1-3

SECTION 1

PRECAUTION

1.1 Safety Precautions

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Removing the almi plate

(See fig.1)

(1) Remove the six screws A, two screws Band one screw C

attaching the almi plate.

(2) Remove the almi plate from main body.

Fig.1

!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.

almi plate

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1-4 (No.MA252)

3.2 Removing the main board

(See fig.2 to 4)

• Remove the almi plate.

(1) Remove the five screws Dand one screw D' attaching the

main board. (See fig.2)

(2) Remove the one screw Eattaching the main board. (See

fig.3)

(3) Take out the main board, and then remove the wire from

speaker terminal. (See fig.4)

Reference:

When attach the screw D', spring and washer are attached

with screw D'. (See fig.2)

Caution:

When reassembly, wire should connect as same as before dis-

assembly. (See fig.4)

3.3 Removing the speaker

(See fig.4)

• Remove the almi plate.

• Remove the main board.

(1) Remove the base cabinet.

(2) Remove the four screws Fattaching the speaker.

(3) Shift up the speaker and take out.

Fig.2

Fig.3

Fig.4

washer

base cabinet

spacer

main board

spring

upper cabinet

base cabinet wire (white)

wire (blue)

spacer speaker

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(No.MA252)1-5

SECTION 4

ADJUSTMENT

This service manual does not describe ADJUSTMENT.

SECTION 5

TROUBLESHOOTING

5.1 10 PIN CORD DIAGRAM

1.BL/WH

2.YL

3.BK

4.WH/BK

5.GY/BK

6.NC

7.YL

8.BK

9.WH

10.GY

REMOTE OUT

POWER LEAD

POWER

LEAD

GROUND

TO L CHANNEL

SPEAKER OUTPUT

TO R CHANNEL

SPEAKER OUTPUT

TO ANPLEFIER

RECEIVER

TO ANPLEFIER

RECEIVER

1 BL/WH

2 YL

7 YL

3 BK

8 BK

9 WH

4 WH/BK

10 GY

5 GY/BK

Black

Blue

White

Gray

Yellow

RR Rear Right

FR Front Right

FL Front Left

RL Rear Left

REMOTE

Remote Out

GND Ground

MEMORY

Memory Backup Battery+

REMOTE

MEMORY

GND

FL+

FL-

FR+

FR-

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(No.MA252)

Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan

Victor Company of Japan, Limited

VPT

Printed in Japan

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Contents

Block diagram

Standard schematic diagrams

Printed circuit boards

2-2

2-3

2-5 to 6

CD-ROM No.SML200603

SCHEMATIC DIAGRAMS

ACTIVE SUBWOOFER SYSTEM

No.MA252SCH

2006/3

CS-BB2J,CS-BB2U

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TEL 13942296513 QQ 376315150 892498299

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2-1

!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

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2-2

IC101

-1

IC101

-2

INPUT

AMP.

PHASE

SELECT

CN301

IC321 IC331

-1

IC331

-2

H.P.F L.P.F

IC701

POWER

AMP.

CN701

CJ101

CN401

S402

PHASE SW L.P.F. SW

S401

IC301

E.VOL

(V.C.A)

PHASE

IC311

-1

IC311

-2

Q604

Q701

MUTE

CN101

LINE IN

BATTERY

SPEAKER

(CAR CABLE)

8VREG.

IC511 Q601 to Q603

STAND BY

+8V

CJ301

CN801

S801

BOOST SW

VR801

LEVEL

SPEAKER

Block diagram

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2-3

Parts are safety assurance parts.

When replacing those parts make

sure to use the specified one.

C304

D602

R113

R213

R111

R110

R211

R210

C106

C103

D512

C107

C206

C207

CJ301

R802

IC101( 1/2)

CN101

R103

R101 R102 R202 R201

R203

IC301

R114

S801

VR801

R214

C104

CN801

D511

D802D801

R801

R302

L501

R304 R336

C301

IC511

Q512

Q511

C203

C204

R315

R312

C311

CJ101

C101

D601

R109

C604

C511

R209

C102

R522 R521

C201

R108R208

C105C205

R306

R212 R112

R104

R204 R205

C210

C202

D302

R305

C512

D513

C513

R105

C514

C521

D301

C501

D501

C502

C303

C310

C302

R311

R512

R511

C503

C504

R106

R206

R107

R207

10/16

MTZJ3.6A-

220k

100k

0.47/50

0.1

1SS133-T2

0.47/50

QNS0240-001

100k

NJM4580L

QGA4201F2-10

1k 1k 1k 1k

NJM2777D

QSW0799-001

QVQ0294-Z24

0.1

QGA2001C1-03

1SS133-T2

SLR-342MC-T

3.9k

QAM0477-001

100k

QQR0703-001

47k 1k

10/16

NJM78M08FA

DTC144ESA-T

2SB1322/RS/-T

0.1

100k

22k

1/50

QNN0068-001

10/16

1SR139-400-T2

27k

1000/25

100/16

27k

10/16

5.6k 4.7k

10/16

1k1k

0.010.01

20k

220k 220k

470k

470k 100k

47/16

10/16

MTZJ4.7A-T2

0.1

MTZJ10A-T2

0.1

100k

100/10

MTZJ10A-T2

3300/16

1N5401-F64

0.1

10/16

47/16

22/16

100k

4.7k

10k

0.1

0.01

2.2k

Standard schematic diagram

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