JBL Media SUB-2000 Service manual

MultiMedia Series Loudspeakers

Media Sub2000

Service Manual

JBL Consumer Products

250 Crossways Park Dr.

Woodbury, New York 11797

- CONTENTS -

SPECIFICATIONS & TEST PROCEDURE……………….….………..1

OPERATIONS & CONNECTIONS……..……..……………...………..2

SERVICE BULLETIN….………..…………….….……………………..3

AMPLIFIER BLOCK DIAGRAM.…………….……..……..…………..4

WIRING DIAGRAM ….………..…………….…..…..……………..5

P.C.B. DRAWINGS….………..…………….………..…..……………..6

VOLTAGE CHART….………..……………………...…..……………..7

EXPLODED VIEW.………..…………….……………..….…………....8

IC DIAGRAMS………………..…………….……….………………….9

MECHANICAL PARTS LIST ..………………………………….…….10

ELECTRICAL PARTS LIST ..………………………………….…..….11

SCHEMATICS ………..……………………..…………………..….13

PACKING ……………….……………………..………….………….14

Media Sub2000 Specifications

1

Max Power Output 35 watts (@ 1% THD)

Frequency Response 50Hz – 120Hz

Input Sensitivity 3V Maximum

Input Impedance 10k ohms

Signal Input Jack Stereo Mini-Connector (1/8”)

Signal Output Jack Stereo Mini-Connector (1/8”)

Dimensions (H x W x D) 9 5/8 x 5 ¼ x 10 ¾”

(244 x 133 x 273mm)

Weight 7.0 lbs. /3.2kg

TEST PROCEDURE

Media Sub2000

Frequency 20Hz – 600Hz

Input Voltage 0.175V

Volume Maximum

General Function

1. Assure Level control volume is Maximum (full CW)

2. Using sine wave generator sweep unit to range of above frequencies

3. Listen to driver and cabinet for rattles, clicks, buzzes, or other unusual noises

2

Service Bulletin

3

Service Bulletin JBL9802 - May 1998 This is considered a Major repair

To: All JBL Service Centers

Model: Media Sub2000 Powered Subwoofer

Subject: False Triggering

In the event you receive a Media Sub2000 with the complaint: “the subwoofer never shuts off”, or “the
unit cycles on & off by itself with no input signal”, perform the following modification to raise the input
threshold of the subwoofer amplifier:

Procedure:

1) Turn the unit upside-down and remove the (8) mounting screws on the bottom plate. This includes the (2)
deeply recessed screws near the center of the plate. Then remove the (2) smaller screws holding the
black input plate to the end of the cabinet.

2) Pull the plate and amplifier up and out the cabinet.

3) Unplug all (3) molex connectors, and remove the (2) small screws holding the input plate onto the
amplifier PCB; remove the input plate.

4) To gain access to the components, remove the (2) remaining small screws holding the PCB to the bottom
plate and detach it from the plate.

5) Locate C351 - 100pf SMD cap. Replace with 470 pf part, (JBL part #CP1885). See drawing.

6) Locate R348 - 330KΩ SMD resistor. Replace with 100kΩ part, (JBL part #RS2043).

7) Locate Diode D351. Solder a 10KΩ resistor (JBL part #RS2042) in parallel with the diode.

8) Reassemble and replace the amplifier assembly into the cabinet in the reverse order , making sure all
connectors and screws are replaced.* When re-attaching the input plate make sure both ground
terminals are attached to the screw.

9) Test unit and assure that the subwoofer stays in the standby mode with no input signal, and comes out of
protection with a 50 Hz, 50 mV input signal.

Model Serial number

120V

Media

Sub2000

Media

Sub2000

AC0029-10001

to
AC0029-11300
AC0029-11301

and above

Serial number

230V

AC0030-01001

and above

* When replacing the final two screws in the
center of the bottom plate, because of the
design you cannot drop the screws into each
cavity and expect the screws to align with the
holes.
With a Philips screwdriver well fitted to the
screw head, you may either use a magnetized
screwdriver and lower the tip (with screw)
carefully down into the cavity to align; OR
turn the subwoofer right-side up and insert the
tip with screw up into the cavity.

Status Action

False Triggering Change value of C351 and R348; add 10K

resistor in parallel with D351

Factory

Modification

NONE REQUIRED

Ω

JBL Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 [phone]

1

4

2

3

4

5

6

7

E

AUDIO INPUTAUDIO INPUT

D

C

AUDIO OUTPUTAUDIO OUTPUT

BLOCK DIAGRAM

B

JK301

JK302

IC301
TL072

VR404

TL074

LOW-PASS

FILTER

AFTER NO SIGNAL I/P FOR A WHILEAFTER NO SIGNAL I/P FOR A WHILE

SMITH TRIGGER COMPARE CIRCUITSMITH TRIGGER COMPARE CIRCUIT

VOL CNTL

AUTO POWER OFF/ONAUTO POWER OFF/ON

IC351

POWER AMP

MUTE
Q501

IC601IC351

TDA8563Q

LD402

MULITI-LED

RED-STANDBY

GREEN-ON

SWITCHING POWERSWITCHING POWER

SUBWOOFER

POWER SUPPLYPOWER SUPPLY

CIRCUIT

E

D

C

B

AC CORDAC CORD

A

Media Sub2000

TL074

T901/D906/IC901

A

1

2

3

4

5

6

7

1

5

2

3

4

5

6

7

E

D

C

WIRING DIAGRAM

AUDIO

OUT

IN

AUDIO

E

CN401

R

JK302

L

R

JK301

L

LFA0194-001

MAIN PCB

MAIN PCB

D

CN901CN901

C

1

CN601

B

A

Media Sub2000

SUBWOOFER

AC SOCKETAC SOCKET

1

RB401

­+

AC CORDAC CORD

B

A

LVU0195-011

CONTROL PCB

1

2

3

4

5

6

7

1

6

2

3

4

5

6

7

E

D

C

CONTROL PCB PRINTED CIRCUIT

B

LD402

T

2-2.0X1.75

VOLUME

1

VR404

T

R476

E

LVU0195-011

D

C

RB401

T

B

A

Media Sub2000

1

2

3

4

5

6

7

A

7

1

8

2

3

E

4

5

2

6

7

E

D

C

EXPLODED VIEW

B

17

4

19

18

S8

S1

D

17

S9

25

24

S2

12

16

15

7

1

11

17

22

8

P1

3

6

18

S5

13

S6

14

S2

10

C

9

5

B

23

17

A

21

S3

S7

S4

S6

20

A

Media Sub2000

1

2

3

4

5

6

7

123

1. GROUND

2. INPUT

3. OUTPUT

1

TDA8563Q

9

2

3

4

5

6

7

8

13

11
10

12

INPUT 2

DIAGNOSTIC OUTPUT

MODE SWITCH

2

VP

OUTPUT 2B

GND2
OUTPUT 2A
OUTPUT 1B

GND1

OUTPUT 1A

VP

1

GROUND (SIGNAL)

INPUT 1

V

OUT

R

L

= 100

Ω

50

Ω

2

3

V

CC

14

PULSE INPUT

TDA8563Q, IC601

DUAL OPAMP,

TL072, IC301

+12V REGULATOR

7812 IC902

PS2501, IC903

TOP227Y, IC901

QUAD OP AMP,

TLO74, IC351

9

MECHANICAL PARTS LIST

10

REF# DESCRIPTION PART NO. QTY

1 FRONT CAB ABS W/KNOB HOLEx1 BPF5041-AQ1 1

2 REAR CAB PP BEIGE BPA0029-AQ1 1

3 SPEAKER DRIVER 4" 2 OHM 20W FTF2040-371 1

4 BAFFLE MAGIC WOOF BPA0030-001 1

5 BOTTOM MAGIC WOOF BPB0023-001 1

6 PORT PLATE t=3.0 mm GAL0089-002 1

7 SEAL RUBBER BRB0010-001 1

8 RUBBER BRB0009-001 1

9 MAIN ASSEMBLY APE0194-002 1

10 HEAT SINK GAL0090-001 11

11 PORT EDGE BPR0033-001 1

12 REAR BRACKET GSE0181-002 1

13 PCB BRACKET GSE0180-001 1

14 LED PCB ASSEMBLY APE0195-012 1

15 TIN FOIL 0.1 TIN+0.4 PAPER GTN0034-001 1

16 PVC PLATE L20.0xW6.0xT0.5 mm BNP0052-001 3

17 MASK PLATE MAGIC WOOF (M.SUB) BPA0031-AQ0 12

18 RUBBER BRB0008-001 2

19 BUSHION BOSS BUSHION BRB0014-001 6

20 FEET BRF0024-001 4

21 LENS BPN0066-001 1

22 LOGO PLATE LOGO PLATE BPL0018-002 1

23 KNOB MEDIA SUB BPK5041-AQ0 1

24 AC SOCKET 2.5A~250V UL/CSA/VDE CPP0002-004 1

25 LINE CORD VDE 1830 MM 2559-002222 1

P1 DRIVER SPONGE OD102xID91xT1 IVE0043-002 1

S1 SCREW M4x0.7PxL85.0 mm H060501-185 6

S2 SCREW T3.0x1.27P-2RHxL8 mm H101001-108 3

S3 SCREW T3.0xL8.0 mm H101001-308 2

S4 SCREW T3.0xL16.0 mm H101001-316 4

S5 SCREW T3.0xL10.0 H101002-310 4

S6 SCREW M3x0.5Px8 mm H120301-308 2

S7 SCREW M3x0.5Px10 mm H120301-310 2

S8 SCREW M3x0.5PxL8.0 mm H120308-308 2

S9 SCREW T3.0xL10.0 mm H101001-110 1

MEDIA SUB2000 ELECTRICAL PARTS LIST

11

DESIGNATOR DESCRIPTION PART # QTY

CAPACITORS

C301,C302 CHIP CAP 220 pF 50V 10% PCV5645-221
C303,C304,C352,C612 CHIP CAP 1 uF 16V +80-20% PCV3962-105
C350,C353,C905,C909,
C911-C915,C930
C351 CHIP CAP 470 pF 50V 10% PCV5645-471
C354 COND ELECT 330 uF 16V 20% PRE3952-331
C355,C910 COND ELECT 100 uF 16V 20% PRE3952-101
C504,C505,C608 CHIP CAP 4.7 uF 16V +80-20% PCV3962-475
C600,C603,C605 CHIP CAP 0.068 uF 50V 5% PCV5635-683
C604 CHIP CAP 0.15 uF 50V 10% PCV3945-154
C606 CHIP CAP 0.022 uF 50V 10% PCV5645-223
C609 CHIP CAP 0.001 uF 50V 10% PCV5645-102
C610 CHIP CAP 0.22 uF 50V +80-20% PCV3965-224
C901 COND SAFTY 0.1 uF 250V 20% PVS3559-104
C902 COND ELECT 150 uF 400V 20% PJE995E-151
C903 COND ELECT 47 uF 25V 20% PRE3953-470
C907 COND ELECT 2700 uF 25V 20% PVR9953-272
C908 COND ELECT 1000 uF 25V 20% D=10 PVE3953-102
C916 COND ELECT 22 uF 25V 20% PRE3953-220
C917,C918 COND SAFTY 0.0022 uF 250V 20% PVS3559-222
C919,C920 COND SAFTY 0.001 uF 250V 20% PVS3559-102

CHIP CAP 0.1 uF 50V 20% PCV3955-104

2
4

10

1
1
2
3
3
1
1
1
1
1
1
1
1
1
1
2
2

CONNECTORS

CN401 CONNECTOR J.S.T. 2.0mm PH CCN7879-026
CN601 CONNECTOR 2 PIN CL3962WVO CCN3962-002
CN901 CONNECTOR 4 PIN CL3962WVO CCN3962-234

SEMICONDUCTORS

D351,D903,D905 DIODE SW LL4148 TELEFUNKEN RCD4148-001
D902 DIODE BYV26D PHILIPS RAD0026-001
D906 DIODE MBR/STPS20100CT RHD2010-001
ZD903 DIODE P6KE180A RHD0180-001
ZD904 DIODE ZENR 13.5-14.0V .5W RAZ0859-083
ZD908 DIODE ZENR 12.6-13.1V .5W RAZ0859-082
IC301 IC 8 PIN TL072 DUAL OP-AMP RCI0720-001
IC351 IC 14 PIN TL074CD QUAD OP-AMP RCI0740-001
IC601 IC 13 PIN TDA8563Q POWER AMP RHI8563-001
BD901 RECTIFIER BRIDGE RS204L RHD0204-001
IC901 IC 3 PIN TOP227Y PWM SWITCH RHI0227-001
IC902 IC 3 PIN REGULATOR +12V RHI7812-004
IC903 IC 4 PIN PS2501 OPTOCOUPLER RHI2501-001
Q352,Q353,Q501,Q901 XISTR NPN SMT TYPE (2SC945) RCN1623-001

RESISTORS

R301,R305,R353,R354,R357,R358, CHIP RES. 10K OHM 1/8W 5% QCF0851-103
R503,R607,R905,R906
R303 CHIP RES. 5.6K OHM 1/8W 5% QCF0851-562
R348 CHIP RES. 100K OHM 1/8W 5% QCF0851-104
R351,R370,R610 CHIP RES. 100 OHM 1/8W 5% QCF0851-101
R355,R356 CHIP RES. 150K OHM 1/8W 5% QCF0851-154
R359 CHIP RES. 330K OHM 1/8W 5% QCF0851-334

1
1
1

3
1
1
1
1
1
1
1
1
1
1
1
1
4

11

1
1
3
2
1

ELECTRICAL PARTS LIST (CONT'D)

12

DESIGNATOR DESCRIPTION PART # QTY

R360,R606 CHIP RES. 220K OHM 1/8W 5% QCF0851-224
R361 CHIP RES. 820K OHM 1/8W 5% QCF0851-824
R362,R380 CHIP RES. 680K OHM 1/8W 5% QCF0851-684
R363 CHIP RES. 82K OHM 1/8W 5% QCF0851-823
R364,R615 CHIP RES. 470 OHM 1/8W 5% QCF0851-471
R366,R368,R614 CHIP RES. 1K OHM 1/8W 5% QCF0851-102
R369 CHIP RES. 680 OHM 1/8W 5% QCF0851-681
R501,R907 CHIP RES. 22K OHM 1/8W 5% QCF0851-223
R502 CHIP RES. 33K OHM 1/8W 5% QCF0851-333
R604 CHIP RES. 12K OHM 1/8W 5% QCF0851-123
R605 CHIP RES. 910 OHM 1/8W 5% QCF0851-911
R616 CHIP RES. 330 OHM 1/8W 5% QCF0851-331
R901 RESISTOR 1M OHM 1/2W 5% QHF0250-105
R902 CHIP RES. 22 OHM 1/8W 5% QCF0851-220
R903,R904 CHIP RES. 33 OHM 1/8W 5% QCF0851-330
BETWEEN Q352 BASS TO GND RESISTOR 10K OHM 1/8W 5% QAF0850-103

MISCELLANEOUS

IC601 TO HSINK SCREW M3.0xL12.0xP0.5 mm H120302-312
IC901 HEAT SINK AL 30x25x35H BLACK GAL0093-001
JK301,JK301 PHONE JACK JYE TAI 3542-01-030 CJM9380-028
CN601 TO WOOFER SPK CON/WIRE 2 COND 400/350mm 4999A-369
CN901 TO AC SOCKET CON/WIRE 4 COND 180mm P=3.96m 4999A-370
D906 HEAT SINK AL 2.0t BLACK GAL0094-001
D906 NUT M3.0x2.5t NICKEL HNM3055-125
D906,IC901 WASHER HD=6.7 ID=3.2 OD=3.6 DSS0007-001
D906,IC901 SI RUBBER 13x18x0.3t mm GSI0001-001
F901 FUSE 4A 250V SLOW KSD2400-001
HEAT SINK TO IC901 SCREW T3x6 mm H101012-206
HSINK TO D906 SCREW M3.0x0.5PxL8.0 mm H060308-108
L901 AC FILTER A6109 33 mH/0.4A JLF0002-001
L902 CHOKE 6110 3.3 uH SVC0002-339
P1 TO P2 WIRE 18 GA 80 MM BLACK UL 1617 5824-080BB
PCB TO H/SINK(IC901) SCREW T3.0xL6.0 mm H120301-106
T901 PWR TRANS 97-550-1 EE-30 TSA1201-001

2
1
2
1
2
3
1
2
1
1
1
1
1
1
2
1

2
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1

LED PCB ASSEMBLY PARTS LIST

REF. NO DESCRIPTION PART NO QTY

LD402 LED MULTI-COLOR LED TWO KEM0001-001
PCB BRACKET FELT 120x5x0.2 mm IVS0005-001
R476 RESISTOR 5K OHM 1/6W 5% CF QAF0650-502
RB401 TO CN401 CON/WIRE 6 COND 200 mm 4999A-384
VR404 CNTL ROTRY RV093NB10KPtEj-15F(S MRR0103-012

94V0 PCB LED PCB LVU0195-201

1
1
1
1
1
1

Media Sub2000

13

SCHEMATIC

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

LFA0194-002

1

R604

220P

220P

R301

10K

C301

C302

R303

5K6

R305

10K

C600

.068

12K

C603

.068

R616

330

JK301

INPUT

2

JK302

OUTPUT

3

1/50

R605

2

3

R606
220k

IC301/B

910

C602

OTP

TL074

IC351/A

C350

.1

7

4

11

8

TL072

4

.022

C606

1

C605

R351

100

5

6

R607 C604

10K

4

C304

C303

10K

10K 1/50

C351
100P

R353

R354

R348

5

6

330K

2

TL072

3

IC301/A

1

C352
1/50

R356 R358
150K 10K

R355

150K

9

10

R357
10K

TL074

IC351/C

R359
330K

8

0.1/50

D351

1N4148

+

C353

Q352

2SC945

R360

+

220K

C354

330/16

C355

100/16

+

R361
820K

R363

82K

.068

R906
10K

R608

R362
680K

13

12

R610
100

.15

10K

C915

.1

R370

IC351/D

TL074

R380
680K

6

5

100

TL074

IC351/B

C612

1/50

R905

10K

+

C910

100/16

14

R615

4K7

R366

7

1K

R369

680

R364

470

C608

4.7/16

C609
.001

R614

1K

R368

1K

Q353

2SC945

TDA8563Q

IC601

VP1

GND(S)

IN 1IN 1

OUT1A

OUT1B

GND 1GND 1

OUT2A

GND 2GND 2

OUT2B

VP2

MODE

VDIAG

13121110981 2 3 4 5 6 7

IN 2IN 2

12

SUBWOOFER

1

2

CN601

C905

DC-

150/400

IC901

TOP227

2

C918

.0022_Y2

.1

Q901

2SC945P

+
C916

22/16

RS204L

DC+

C902

1

3

R907

22K

+

22

R902

.1

C913

.1

C914

ZD903

P6KE180

D902

BYV26D

1N4148

D903

47/25

TSA1201-001

1

3

5

6

+

C903

C917

.0022_Y2

C911

.1

T901BD901

R904

33

12

8

X

11

7

ZD908

D905

3

O

2

G

IC902
78L12

D906

SPS20100CT

2

3
1

PS2501

IC903

21

3

4

13V

1N4148

1

I

.1

C912

13V

R903

33

ZD904

C909

.1

L902

3.3uH/2.5A
+

C907

2700/25

1000/25

+

C908

3

4

5

6

R501

22K

C610

0.22

Q501

2SC945P

R503

123456

CN401

AC INLET

AC INLET

10K

L901

33mH/0.4A

!

C505

4.7/16

.001_Y1

.001_Y1

0.1/250

R901

1M_1/2W

F901

4A

C919

C920

1 2

C901

CN901

12

C504

4.7/16

3 4

R502

33K

7

8

9

REMARK:

VOLUME CNTL & POWER INDICATOR LEDVOLUME CNTL & POWER INDICATOR LED

123456

RB401

R476

5K

VOL

LD402

VR404

10K

LVU0195-011

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

7

8

9

E

14

D

1

2

6

7

2

3

8

4

ITEM NAMENAME PART NO.

2
3
4
5
6
7
8

5

MEDIASYS SUB.MEDIASYS SUB. AFA0078-001AFA0078-0011

POLY BAG

END CAPEND CAP ITF0135-001ITF0135-001

GIFT BOX

CARTON

OWN MANUAL

OWN MANUAL

POLY BAG

6

IVP0001-040

ICG0016-001ICG0016-001

ICC0129-002
YOM0145-001YOM0145-001
YWC0009-002YWC0009-002WARRANTY CARD

IVP0001-018

7

E

D

04
PE-LD

3

C

PACKING EXPLODED VIEW

B

A

Media Sub2000

1

4

3

5

B

A

C

1

2

3

4

5

6

7