Infinity BU-150 Service Manual Download

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BU-150 ELECTRICAL PARTS LIST

BU-150 PCB REV 3.5

Resistors

40702

6.8M

1/4W

5% carbon film

40466

8.66k

1/4W

1% metal film

40458

43.2k

1/4W

1% metal film

40417

47k

1/4W

5% carbon film

R4a/b/c

40105

0.1

1.2W

5% 3pcs.

40420

1/4W

5% carbon film

40420

1/4W

5% carbon film

40449

3.3k

1/2W

5% carbon film

40417

47k

1/4W

5% carbon film

40464

9.1k

10W

5% power resistor Safety part 1

R14

40409

10k

1/4W 5% carbon film

R15

40406

100k

1/4W 5% carbon film

R16, 17

40465

2.4k

5% wirewound Safety part

R18

40424

330k

1/4W

5% carbon film (LED sens) 1

R19

40466

3.9k

5% carbon film

R20

40405

4.7k

1/4W

5% carbon film

R21

40443

39k

1/4W

5% carbon film

R22

40449

3.3k

1/2W

5% carbon film

R23

40461

20k

1/2W

5% carbon film

R24

40418

22k

1/4W

5% carbon film

R25

40417

47k

1/4W

5% carbon film

R26

40701

1.0M

1/4W

5% carbon film

R27

40440

6.81k

1/4W

1% metal film

R30, 31

40441

13.7k

1/4W

1% metal film

R32

40415

470k

1/4W

5% carbon film

R33

40100

332

1/2W

5% carbon film

R35

40422

301k

1/4W

1% metal film

R36

40446

8.66k

1/4W

1% metal film

R37

40446

8.66k

1/4W

1% metal film

R39

40467

30.1k

1/4W 1% metal film

R40

40417

47k

1/4W 1% carbon film

R42, 43

40406

100k

1/4W

1% carbon film

R44, 45

40409

10k

1/4W

5% carbon film

R46

40104

4.7

1/4W

5% carbon film

R48

40468

7.32k

1/4W

1% metal film

R49

40415

470k

1/4W

5% carbon film

R50

40100

332

1/4W

5% carbon film

R51

40417

47k

1/4W

5% carbon film

R52

40456

2.7k

5% wirewound Safety part

R53, 54, 55, 56

40106

100

2W 5% carbon film

R57

40456

2.7k

5% wirewound Safety part

R58

40469

5.49k

1/4W

1% metal film

R59

40405

4.7k

1/4W

5% carbon film

R60

40443

39k

1/4W

5% carbon film

Crossover

40425

50k

1/4W

10% Double Log Pot

Level

40402

1/4W

10% Single Linear Pot

Capacitors

30710

2200uF 100V +80/-20% Electrolytic Radial 1

Safety part

30710

2200uF 100V +80/-20% Electrolytic Radial 1

Safety part

30514

47nF 50V +80/-20% Mono-ceramic axial

C4, 5

30504

100nF 50V +80/-20% Mono-cer rad 0.2"

/ax 0.3"

30709

4.7uF 100V +80/-20% Electrolytic Radial

NP Safety part

30510

33n 50V

10% Mono-ceramic axial

C7a/b

30505

100n 100V

20% Metal Polyester Rad

C8, 9

30504

100nF 50V +80/-20% Mono-ceramic radial 1

C11

30702

100uF 35V +80/-20% Electrolytic Radial

C13

30507

10nF 50V

20% Mono-ceramic axial

C14

30511

330nF 50V

10% Mono-ceramic axial

C15, 16

30707

220uF 50V

20% Electrolytic Radial

C17

30502

100nF 50V +80/-20% Mono-ceramic radial 1

C18

30517

68nF 50V

10% Mono-ceramic axial

C19

30524

82nF 50V

10% Mono-ceramic axial

C20

30504

100nF 50V

10% Mono-ceramic axial

C21

30522

100nF 250V

10% Polyester film

C22, 23

30502

100nF 50V +80/-20% Mono-ceramic axial

C24

30523

330nF 100V +80/-20 Mono-ceramic axial

C26

30508

10nF 50V

10% Mono-ceramic axial

C27

30513

3.3nF 50V

10% Mono-ceramic axial

C29

30711

22uF 35V +80/-20% Electrolytic Radial

Safety part

C31

30525

120nF 50V

10% Mono-ceramic axial

C33

30503

2.2nF 50V

20% Mono-ceramic axial

30505

100nF 100V

20% Polyester film

30505

100nF 100V

20% Polyester film

Diodes

50111

ZENER 1N4763A 91V

5% 1W

LED 1 or 2

50106

Dual Cir LED (2 legged)

D2, 4

50104

1N4148 100V 0.1A

50102

ZENER 1N4749A 24V

5% 1W

50103

ZENER 1N5234B 6.2V

5% 0.5W

D9, 10

50105

ZENER 1N4744A 15V

5% 1W

DBR

50100

Bridge Rect 200V 4A Safety part

Transistors

60151

MPS A13 30V NPN (Darl)

60152

2N3906 40V PNP, 2N4402 alternate

60153

2N3904 40V NPN, 2N4401 alternate

Q4, 5

60155

2N5401 80V PNP

Integrated Circuits

60100

LM324 Quad OpAmp +/-15V

60101

TLO 82 Dual OpAmp +/-15V

60302

S64AMI Power Amp module SAFETY PART

Inductors

CMC1

80100

mc4438 Safety part

80121

mc4642 Safety part

80122

Ferrite bead

80122

Ferrite bead

80122

Ferrite bead

2 0

Amplifier/Subwoofer

BU-150

REF #

PART #

DESCRIPTION

QTY

REF #

PART #

DESCRIPTION

QTY

Summary of Contents for BU-150

Page 1: ...Infinity Systems Inc 250 Crossways Park Drive Woodbury N Y 11797 1 800 553 3332 A Harman International Company Rev A 3 2000 BU 150 Powered Subwoofer SERVICE MANUAL...

Page 2: ...lacement C1 2 2200uF 100V electrolytic filter caps Be sure replacement part is at least the same working voltage and capacitance rating Also the lead spacing is important Incorrect spacing may cause p...

Page 3: ...LE OF CONTENTS SAFETY INFORMATION 2 GENERAL SPECIFICATIONS 3 DETAILED SPECIFICATIONS 4 CONTROLS AND THEIR FUNCTION 6 BU 150 CONNECTIONS 7 OPERATION 11 BU 150 TEST SET UP AND PROCEDURE 12 BU 150 POWER...

Page 4: ...ol Max 1 input driven AP source Z 600 ohms Speaker Hi Level Input 7 Vrms 2dB To Rated Power Vol Max 1 input driven AP source Z 25 ohms Signal to Noise SNR A Weighted 100 dBA 90 Relative to rated outpu...

Page 5: ...er Input w 1 ch Driven Signal Present Turn on time 1 sec Amp connected and AC on then input signal applied Auto Mute Turn OFF Time 3 min T before muting after signal is removed Power on Delay time 1 s...

Page 6: ...roll off points 4 Power On indicator 5 Phase 0 180 switch to change audio signal polarity 6 Level This controls the volume level of the subwoofer TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE TH...

Page 7: ...one end of each stereo pair of leads to the preamplifier s left and right outputs and connect the other end to the corresponding left and right LOW LEVEL INPUTS 1 on the subwoofer If you are using a t...

Page 8: ...woofer pair See Figure 3 Figure 3 Use this method when using single subwoofer or two subwoofers The subwoofer may be connected to your system using the HIGH LEVEL INPUTS 4 on the plate located on the...

Page 9: ...necting one subwoofer to satellites Depending on whether you are using one or two subwoofers connecting your satellites can be accomplished in one of two ways If you are using a single subwoofer with...

Page 10: ...ofer has a variable frequency control that can be used to block unwanted frequencies between 50 150Hz from being reproduced by the subwoofer When you set this control depends on the low frequency capa...

Page 11: ...This will increase low bass while leaving the mid bass sounding the same as it did before the adjustment To reduce low bass without changing midbass turn the Crossover Frequency control UP and the Vol...

Page 12: ...om port tube opening 5 Turn off generator turn VOLUME control fully counterclockwise disconnect RCA cables 6 Connect one pair of speaker cables to either high level input terminal on UUT Cables should...

Page 13: ...k I P of module to GND 0V D C Power up with no signal I P LED RED OK OK OK OK OK OK OK OK Check C29 and Pre AMP Check O P to module for 80Vpp square wave measure to GND Check L1 L2 L3 L4 C6 C24 Check...

Page 14: ...PLASTIC BAG CARTON 200420 SCREWS 10 SCREWS 8 TRIM RING 200401 SCREWS 4 FOOT BASE Each 200870 FEET PART Set of 4 200310 CABINET NOT FOR SALE 15 WOOFER 200400 BU 150 CABINET ASSEMBLY BU 150 PACKING AMPL...

Page 15: ...ws to secure input jacks 5 6 70171 10 x 1 machine screw Bolts 4 7 70172 10 Keps Nut 4 8 70173 6 x 0 5 Screws for fuse PCB 2 9 80124 Transformer MCI4700 SAFETY PART 1 10 80123 250V 1 5A T type SLO BLO...

Page 16: ...1 6 Amplifier Subwoofer BU 150 BU 150 PCB Version 3 52 Component Side Trace Version 3 52 Component Side Trace Layer 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G...

Page 17: ...1 7 Amplifier Subwoofer BU 150 Version 3 52 Solder Side Trace Layer as viewed through the board 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G BU 150 PCB Version 3 52 Solder Side Trace...

Page 18: ...1 8 Amplifier Subwoofer BU 150 BU 150 PCB Version 3 53 Component Side Trace Version 3 53 Component Side Trace Layer 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G...

Page 19: ...1 9 Amplifier Subwoofer BU 150 BU 150 PCB Version 3 53 Solder Side Trace Version 3 53 Solder Side Trace Layer as viewed through the board 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G...

Page 20: ...itors C1 30710 2200uF 100V 80 20 Electrolytic Radial 1 Safety part C2 30710 2200uF 100V 80 20 Electrolytic Radial 1 Safety part C3 30514 47nF 50V 80 20 Mono ceramic axial 1 C4 5 30504 100nF 50V 80 20...

Page 21: ...FOLLOW ONE OR MORE OF THESE STEPS MAY RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN POWERED UP Align white indent marker on Amp Module with indent marker on main PCB alternately observe positio...

Page 22: ...2 2 Amplifier Subwoofer BU 150 BU 150 SCHEMATIC 1 of 2 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G BU 150 Schematic 1 of 2...

Page 23: ...2 3 Amplifier Subwoofer BU 150 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G BU 150 Schematic 2 of 2 BU 150 SCHEMATIC 2 of 2...

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Infinity BU-150, Service Manual

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