JVC CS-BB2J User manual

SERVICE MANUAL
COPYRIGHT © 2006 Victor Company of Japan, Limited No.MA252
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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
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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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

(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.
A
A
B
C
almi plate
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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
D
D
D
D'
washer
base cabinet
spacer
main board
spring
E
upper cabinet
F
F
F
base cabinet wire (white)
wire (blue)
spacer speaker
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

(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 OR POWER LEAD
POWER
LEAD
GROUND
TO L CHANNEL
SPEAKER OUTPUT
TO R CHANNEL
SPEAKER OUTPUT
TO ANPLEFIER
OR
RECEIVER
TO ANPLEFIER
OR
RECEIVER
1 BL/WH
2 YL
7 YL
3 BK
8 BK
9 WH
4 WH/BK
10 GY
5 GY/BK
BK
BL
WH
GY
YL
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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

(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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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
COPYRIGHT 2006 Victor Company of Japan, Limited.
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
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T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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)
IC101( 1/2)
CN101
R103
R101 R102 R202 R201
R203
IC301
R114
S801
VR801
R214
C104
CN801
D511
D802D801
R801
R302
L501
R304 R336
I
C301
IC511
Q512
Q511
C203
C204
R315
R312
C311
I
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-
T
1
S
220k
220k
100k
100k
100k
100k
0.47/50
0.1
1SS133-T2
0.47/50
0.47/50
0.47/50
QNS0240-001
100k
NJM4580L
NJM4580L
QGA4201F2-10
1k
1k 1k 1k 1k
1k
NJM2777D
1k
QSW0799-001
QVQ0294-Z24
1k
0.1
QGA2001C1-03
1SS133-T2
SLR-342MC-T
SLR-342MC-T
3.9k
QAM0477-001
100k
QQR0703-001
47k 1k
N
10/16
NJM78M08FA
DTC144ESA-T
2SB1322/RS/-T
0.1
0.1
100k
22k
1/50
N
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
1k
0.1
MTZJ10A-T2
0.1
100k
100/10 100/10
MTZJ10A-T2
3300/16 1N5401-F64
0.1
10/16 47/16 22/16
100k
4.7k
10k
0.1
0.01
1k 1k
2.2k 2.2k
!
Standard schematic diagram
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com