Infinity-BU2-sub-sm 维修电路原理图.pdf

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1、BU2Powered SubwooferA Harman International CompanyPart No.: 1112-BU2 11/98Technical ManualTechnical ManualINFINITY SYSTEMS INC.250 Crossways Park DriveWoodbury, New York 11797RadioFans.CN 收音机爱 好者资料库1Powered SubwooferBU2BU2 SPECIFICATIONSDriver.12 WooferNominal Impedance .4 Enclosure Design.Tuned Por

2、tAmplifier Power.100 watts RMSFrequency Response.30Hz - 150Hz ( 3dB)Crossover Frequency.50 to 200 Hz Continuously VariableInputsLine Level .RCA jacksHigh Level .(Speaker) Input terminalsOutputs.Full range SpeakerSensitivityLow Level .70mVHigh level .1.7VInput ImpedanceLow Level .12KHigh level .4.7KA

3、uto-Off Delay.8 minutesDimensionsInches.14 x 14 x 14Metric.36.8 x 36.8 x 36.8cmplus 1 (32mm) for feetShipping Weight .43 lbs/19.5 Kg.Occasional refinements may be made to existing products without notice, but will always meet orexceed original specifications unless otherwise stated.TABLE OF CONTENTS

4、BU2 SPECIFICATIONS .1TABLE OF CONTENTS.1BU2 CONTROLS AND THEIR FUNCTION .2BU2 TEST PROCEDURE.3BLOCK DIAGRAM .4BU2 CABINET EXPLODED VIEW .5AMPLIFIER EXPLODED VIEW.6BU2 MECHANICAL PARTS LIST .7BU2 ELECTRICAL PARTS LISTS .8BU2 PACKAGING EXPLODED VIEW .10INTEGRATED CIRCUIT DIAGRAMS.11PCB (TOP VIEW, comp

5、onent side).12PCB (BOTTOM VIEW, solder side).13PREAMP/CROSSOVER SCHEMATIC 120V.14AMPLIFIER SCHEMATIC 120V .15PREAMP/CROSSOVER SCHEMATIC 230V.16AMPLIFIER SCHEMATIC 230V .17THIS MANUAL IS FOR THE BU2 REVISION WITHOUT AN EXTERNAL POWER SWITCH(120v Only - 230v version has a power switch)RadioFans.CN 收音机

6、爱 好者资料库2Powered SubwooferBU2BU2 CONTROLS AND THEIR FUNCTIONLOW LEVELINPUTRLLLRRPOWER506020012080180VOLUMECONTROLWARNING:TO REDUCE THE RISK OF FIRE OR ELECTRICSHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENWARNING: SHOCK HAZARD-DO NOTOPEN.AVIS: RISQUE

7、DE CHOC ELECTRIQUE-NE PAS OUVRIR.NOT SUITABLE FOR IN-WALL MOUNTING120V60Hz 230WMODEL BU2ONREVOFFNOMSTANDBYREDHIGH LEVEL INPUTHIGH LEVEL OUTPUTFREQUENCYHzAUTOPOWERPHASEMINMAXLISTED773LP/N WF-100iAUDIOEQUIPMENTPOWERONOFF12567843230v ONLY1. Auto Power - This Auto On/Off switch controlswhether the BU2s

8、Automatic turn-on circuit isactive. When this switch is ON, the BU2 will turnitself on, indicated by a green LED, when it isplugged in and receiving a signal. When the BU2has not received a signal for 8 - 10 minutes, theunit will revert to the STANDBY mode, indicated bya red LED. When this switch is

9、 OFF, the unitswitches to the STANDBY mode and will stay OFF,regardless of input signal. THIS IS NOT A TRUEAC POWER SWITCH AS IT DOES NOTDISCONNECT THE AMPLIFIER FROM THEAC LINE.2. Standby LED - The LED will light green when theunit is plugged in and is receiving signal. When instandby mode (when th

10、e Auto mode is active butthe subwoofer is receiving no signal) the LED isred.3. High Level Inputs - These High Level Inputs are forreceivers that do not have line-level “pre-amp out”or “subwoofer out” jacks. When a pair of main orsatellite speakers are attached to the OUTPUTterminals, they are drive

11、n the full range offrequencies as generated by the music source(receiver, amplifier, etc.)4. Low Level Input - These left and right Line LevelInputs are normally used when the receiver/processor has line-level “pre-amp out ” or“subwoofer out” jacks. If a single cable monoor subwoofer source is conne

12、cted to the BU2, aY-cable must be connected to the subwoofer forfull output.5. Frequency - The Frequency adjustment determinesthe upper corner roll-off point for the BU2.6. Phase - This controls the switch from the reverse tonormal in audio signal polarity.7. Volume Control - This controls the volum

13、e levelof the subwoofer.8. AC Power - This switch, present on the 230v versiononly, connects the AC line voltage to the BU2;normally it is left in the ON position.TEST PROCEDUREEquipment needed:?Function/signal generator/sweep generator?Integrated Amplifier?Multimeter?Cables - line level (RCA) and s

14、peaker cablesGeneral FunctionUUT = Unit Under Test1.Connect both right and left line level inputs (RCA) tosignal generator and UUT. Use Y-cable if necessary frommono source. VOLUME control should be fullcounterclockwise.2.Turn on generator, adjust to 50mV, 50 Hz.3.Plug in UUT; red LED should be ON.

15、Turn VOLUMEcontrol full clockwise.4.LED should turn Green; immediate bass response shouldbe heard and felt from port tube opening.5.Turn off generator, turn VOLUME control fullycounterclockwise, disconnect RCA cables.6.Connect one pair of speaker cables to either high levelinput terminal on UUT. Cab

16、les should be connected to anintegrated amplifier fed by the signal generator.7.Turn on generator and adjust so that speaker level outputis 2.0V, 50 Hz. Turn VOLUME control full clockwise.8.Green LED should light, immediate bass response shouldbe heard and felt from port tube opening.Sweep Function1

17、.Follow steps 1 - 4 above, using a sweep generator as asignal source.2.Sweep generator from 20Hz to 300Hz. Listen to thecabinet and drivers for any rattles, clicks, buzzes or anyother noises. If any unusual noises are heard, remove driverand test.Driver Function1.Remove driver from cabinet; detach +

18、 and - wire clips.2.Check DC resistance of driver; it should be 3.3 ohms.3.Connect a pair of speaker cables to driver terminals.Cables should be connected to an integrated amplifier fed bya signal generator. Turn on generator and adjust so thatspeaker level output is 5.0V.4.Sweep generator from 20Hz

19、 to 1kHz. Listen to driver forany rubbing, buzzing, or other unusual noises.3Powered SubwooferBU2BU2 TEST PROCEDURE4Powered SubwooferBU2BU2 BLOCK DIAGRAM (for 120v & 230v versions)5Powered SubwooferBU2BU2 CABINET EXPLODED VIEW6Powered SubwooferBU2AMPLIFIER EXPLODED VIEWBU2AmplifierExplodedViewEEDDCC

20、BBAA776655443322112171345613152213181920142423161678101112211111927Powered SubwooferBU2BU2 MECHANICAL PARTS LISTSRef.#Part #DescriptionQty1XX1342GASKET 1 OF 442XX1250Strain Relief SPT-1 Black23XX1275Plastic Cover For Inf. Bu-1(2)14NU1049Nut 8-32 x 1/4 Hex Keps Sink F4(XFORMER)5MI1211POWER TRANSFORME

21、R BU-216BR1538FRONT PLATE BU-217SW1082THERMOSWITCH 60 DEG C PANEL1MOUNTED FASTON TERM(FRONT PLATE)8HA1132HARNESS AC CORD BU-1/BU-21(FRONT PLATE)9XX1343KNOB BLACK W-POSITION INDICATOR2(CUSTOM) (POT.)10HS1171HEATSINK BU-2 (FRONT PLATE)111SC1284Screw 4-40X 3/8 TATTITE, PAN PHIL9HEAD, BLACK ZINC FIN(HEA

22、TSINK-FRONT PLATE)12BR1544BRACKET FOR HEATSINK BU-2113BR1395Bracket Pwr Support Bass550214SP1082SPONGE W/ADHESIVE L=1/4 W=1/42T=3/16 (TO-92)15SP1073Sil Pad TO-3P 1.0 x 0.750 (POWER3XTORS TO-218 1X, TO-220 2X)16SC1194Screw 6-32x3/8 Tapt-Thr Hex Washr2(PC BOARD BRACKET)17HA1218SPK HARNESS AWG 18 MOLEX

23、 TO1FASTON .187 AND .250(PLASTIC COVER)Ref.#Part #DescriptionQty18SC1215Screw M3x1.25x10 Plas-Thr Pan-Phi3(SPKR CONNECTOR, RCA CONNECTOR)19SC1253Screw 4-40 x3/8 Pan Phillips Hd Mc2(THERMOSWITCH)20SC1214Screw 8-32x1/2 Mach-Thr Pan-Phil4(XFORMER)21SC1285Screw 6-32X3/4 MACH-THR3PAN PHI HEAD, BLACK ZINC

24、 FSH(XTOR BAR)22NU1059Nut 4-40Keps-Thr, Hexag. Znk Fs2(THERMOSWITCH)23BR1567FIN-XTOR BAR TO-218 FOR BU2224BR1568FIN-XTOR BAR TO 220 FOR BU21SP1072Sil Pad TO-220 0.750 x 0.5002(TO-220 TRANSISTOR)XX1370GASKET PWR XMER 3.20 x 3.201x 1/16 (FRONT PLATE XMER)(NOT SHOWN)Ref.#Part #DescriptionQtyCapacitorsC

25、1, 2CP1584CAP A.E. 6800uF,20%,63V2C3, 4, 5, 11CP1552SMD Cap .1uF 20% 100v Z5U 12104C6, 7, 15, 16, 21,CP1426SMD CAP 0.1uF 20% 50V Z5U1822, 25, 38, 39,1206 T/R110, 111, 115,116, 117, 126,127, 134, 135C8, 9CP1475SMD Cap 33pF 5% 50v NPO 12062C10, 23, 24, 40,CP1496SMD CAP 100pF 10% 50V X7R 1206941, 102,

26、104,109, 133C12CP1563SMD Cap 150pF 5% 50v NPO 12061C13, 31CP1412Cap Alum El. 47uF 20% 16v Rad.2C14CP1436SMD CAP 0.022uF 20% 50V Z5U11206 PKG.C17CP1562Cap Alum El. 330uF 20% 16v T/R1C18, 34, 35, 36, 37 CP1645Cap Al El 22uF 20% 63V 85 Deg5C19CP1177Cap Poly Film 0.22uF 5% 63V TR1C20CP1539Cap. Poly Fil

27、.047uF 5% 63V TR1C26, 27CP1844SMD CAP CERAMIC 0.01uF 10%2200V X7R 1206 T/RC29CP1808Cap Poly Fil 0.01uF Class X21C28, 120, 121, 122 CP1679Cap. Poly Fil .068uF 5% 63V4C30CP1479SMD CAP 3300pF 10% 100V X7R1C33, 125CP1495Cap Poly Film 0.1uF 5% 63v T/R2C101, 103CP1646SMD Cap 220pF 5% 50V X7R 12062C107, 11

28、2CP1417Cap Alum El. 22uF 20% 16v T/R2C113CP1415Cap Alum El. 2.2uF 20% 50v T/R1C114CP1411Cap Alum El. 100uF 20% 16v T/R1C118, 119CP1409CAP ALUM El 0.33uF 20% 50V2T/R LS=0.100C123CP1917CAP POLY FILM 0.12uF 5% 50V1LS=5mm H=16.5mm T/RC124CP1916CAP POLY FILM .068uF 5% 50V1LS=5mm H=16.5mm T/RC128CP1915CAP

29、 POLY FILM 8200pF 5% 50V1LS=5mm H=16.5mm T/RC129CP1918CAP POLY FILM 0.27uF 5% 50V1LS=5mm H=16.5mm T/RC130, 131CP1914CAP POLY FILM 0.039uF 5% 50V2LS=5mm H=16.5mm T/RC132CP1678CAP POLY FILM 5600pF 5% 50V1LS=5mm H=16.5mm T/RRef.#Part #DescriptionQtyDiodesD1, 2, 3, 4DI1005Rectifier Diode 3A/200V 1N54014

30、D5, 6, 7, 8, 9,DI1132SMD Diode Swch LL-34 Pkg T/R1110, 11, 16, 17,RLS4148101, 102D12DI1010Diode Fast Rect. 1A/100v Axial IN40021Z1, 2DI1150SMD Zener 15v 5% CP Pkg. T/R2Integrated CircuitsIC1, 2, 102,IC1041IC SMD DUAL J-FET-INPUT5103, 104OP AMP T/R TLO72IC101IC1162IC SMD Quad-J Fet Input OP Amp1TLO74

31、TransistorsQ1TR1245TIP35E TO-3P1Q2TR1246TIP36E TO-3P1Q3TR1247TIP32E TO-2201Q4TR1248TIP31E TO-2201Q5TR1043MPS2222A TO-92 Bulk1Q6, 9, 15, 20TR11662N5401 TO-92 T/R4Q7, 8TR11672N5551 TO-92 T/R2Q10, 12, 14TR1131DTC114TK3Q11TR11082SC2412K1Q13TR11252SA1037K1Q16TR1184TIP32C1Q17TR1183TIP31C1ResistorsJ1, 2, 3

32、, 4, 5, 6,RS1779SMD RES ZERO ohm 5% 1/8W 1206277, 8, 9, 10, 11,12, 13, 14, 101,102, 103, 104,105, 106, 107,108, 109, 110,111, 112, 113R1, 2, 43RS1868RES CER 0.1 ohm 5% 5W3RADIAL BULKR3, 4RS1916RES C/F 5.1 ohm 5% 1/4W T/R2R5RS1994RES C/F 100 ohms 5% 1/4W T/R1R6, 20, 21, 34, 111RS1831SMD RES 7.5Kohm 5

33、% 1/8W 12065R7RS1871SMD RES 5.1Kohm 5% 1/8W 12061R8RS1878SMD RES 10 ohm 5% 1/8W 120618Powered SubwooferBU2BU2 ELECTRICAL PARTS LISTSRef.#Part #DescriptionQtyR9, 10, 35, 44,RS1701SMD RES 10Kohm 5% 1/8W 12061346, 52, 59, 67,113, 121, 123,127, 130R11, 12, 15, 17RS1717SMD RES 100 ohm 5% 1/8W 12064R13, 1

34、4, 40, 57RS1722SMD RES 470 ohm 5% 1/8W 12064R16, 23, 26, 50, 61RS1706SMD RES 47Kohm 5% 1/8W 12065R18, 24, 119RS1703SMD RES 2.2Kohm 5% 1/8W 12063R19, 22RS1725SMD RES 15Kohm 5% 1/8W 12062R25, 125RS1883SMD RES 1.5Kohm 5% 1/8W 12062R27, 28, 29,RS1898SMD RES 10Kohm 1% 1/8W 1206549, 56R30RS2160SMD RES 11K

35、ohm 1% 1/8W 12061R31RS2468SMD RES 1Mohm 1% 1/8W 12061R32, 54, 55RS2448SMD RES 47.5Kohms 1% 1/8W 12063R33RS1877SMD RES 4.3Kohm 5% 1/8W 12061R36, 37RS2180RES M/O F/P 470 ohm 5% 1W T/R2R38, 39, 53, 58RS1705SMD RES 4.7Kohm 5% 1/8W 12064R41, 42RS1715SMD RES 5.6Kohm 5% 1/8W 12062R45, 126, 128,RS1704SMD RE

36、S 22Kohm 5% 1/8W 12064129R47RS1700SMD RES 1Kohm 5% 1/8W 12061R48RS1782SMD RES 1.8Kohm 5% 1/8W 12061R51RS2422RES M/O F/P 100 ohm 5% 1W T/R1R60, 102, 103,RS1702SMD RES 100Kohm 5% 1/8W 12067104, 105, 116,122R62RS2449SMD RES 182Kohms 1% 1/8W 12061R63RS1943SMD RES 22.1Kohm 1% 1/8W 12061R64RS1957SMD RES 4

37、.99Kohm 1% 1/8W 12061R65RS2446SMD RES 1.18Kohms 1% 1/8W 12061R66RS2450SMD RES 2.21Kohm 1% 1/8W 12061R68RS1958SMD RES 18.7Kohms 1% 1/8W 12061R69RS2447SMD RES 3.65Kohms 1% 1/8W 12061R101, 108RS1998RES C/F 4.7ohm 5% 1/4W T/R1R109, 110RS1790SMD RES 2.7Kohm 5% 1/8W 12062R112, 115RS1713SMD RES 56Kohm 5% 1

38、/8W 12062R114RS1793SMD RES 470Kohm 5% 1/8W 12061R117RS1968SMD RES 2.2Mohm 5% 1/8W 12061R118RS1710SMD RES 3.3Kohm 5% 1/8W 12061R120RS1892SMD RES 10Mohm 5% 1/8W 12061Ref.#Part #DescriptionQtyR124RS1767SMD RES 1Mohm 5% 1/8W 12061R131RS1992SMD RES 390Kohm 5% 1/8W 12061R132, 133, 134,RS1724SMD RES 6.8Koh

39、m 5% 1/8W 12064135R136, 137RS2479SMD RES 14Kohm 1% 1/8W 1206 T/R1MiscellaneousAC1, 2, CT,TE1185Terminal male type4TI(AC-H1)quick-fit 0.187 TABCONN101HA1186HARNESS 7-POSITION 0.11CENTER-CENTER L=4CONN102CO1334JACK SPEAKER OCTAL PC MOUNT1RIGHT ANGLEF1FS1067Fuse Slo-Blo 2A/250v 5x20 120v GMC1Fuse Slo-B

40、lo 1.6A/250v 5x20 230v GMC 1F1 (CLIP)XX1297Fuse Clip 5x20 PC Mount2K1RE1019Relay,12A,48VDC1L1MI1100Inductor Air Core 0.38uH1LED101LE1032Led Bicolor Red/Green 5mm1TH1TH1006NTC THERMISTOR 10Kohm 25DegC1RCA101CO1407CONNECTOR RCA DUAL VERT.1PC MOUNT WHT/RED R/A GOLDSPKOUTCO1343Strght Sq Hdr 0.156Center1

41、SW1507-8046 AC Power Switch 230v version only1SW101, 102SW1084Auto On, Phase, slide switch DPDT2T1MI1211Power Transformer 120v BU21MI1216Power Transformer 230v BU21T2(XFORMER),TE1175Trmnl Male Tab .032x.250PC M2T3(AC LO)T4HA1175HARNESS, POCKET TERMINAL1TO FASTON .250, 5,#18 GRETP1, 2TE1213TERMINAL T

42、URRET2VR101RS2426POT 20K DUAL 16mm B-TAPER1SHAFT “F” PC MOUNT R/AVOLUMEVR102RS2427POT 20K QUAD 16mm B-TAPER1SHAFT “F” PC MOUNT R/AFREQUENCY9Powered SubwooferBU210Powered SubwooferBU2BU2 PACKAGING EXPLODED VIEW11Powered SubwooferBU2INTEGRATED CIRCUIT DIAGRAMS12Powered SubwooferBU2PRINTED CIRCUIT BOAR

43、DS (TOP VIEW, component side)13Powered SubwooferBU2PRINTED CIRCUIT BOARDS (BOTTOM VIEW, solder side)14Powered SubwooferBU2PREAMP/CROSSOVER SCHEMATIC 120V VERSION15Powered SubwooferBU2POWER SCHEMATIC 120V VERSION18.7K 1%R683.65K 1%R6920K 1%P1F12A55CTHERMSW1470R1447uF/16VC132.2KR24C41100pFC303300pFR50

44、47KC40100pF47.5K 1%R32C380.1uFC390.1uFIC2:B-6+57RLS4148D5R311M 1%470R40D10RLS4148C330.1uF0.22uFC192.21K 1%R66R651.18K 1%R62182K 1%C20.047uFR4910K 1%IC2:A-2+38447.5K 1%R54R5610K 1%C3522uF/63VQ10DTC114TKRLS4148D6R251.5KR2647K.022uFC141.8KR48C3147uF/16V-2+310K 1%R2810K 1%R2711K 1%R30D16RLS4148K1RELAY10

45、KR442SA1037KQ13R5910KQ14DTC114TK0.38uHL110R8D9RLS4148R4610K100-1WR512N5401Q204.7KR5310KR52D12IN400247KR61100KR60C17330uF/16V4.7KR58R398.2K0.1uFC22R384.7K0.1uFC250.1uFC16TIP36EQ2.1/5WR2.1/5WR1Q1TIP35ER45.1R35.12N5401Q15C110.1uF/100VQ17TIP31CDZD15-TBZ1C3722uF/63V0.1uFC15R415.6KC3622uF/63VR36470-1WC241

46、00pFC23100pFMPS2222AQ5R75.1KR67.5K100R112N5401Q6100R12Q72N555115KR197.5KR207.5KR21100R15100R17470R13C833pF33pFC92N5401Q9R1647K2.2KR18100pFC10Q82N5551C70.1uFR910KR1010KQ3TIP31ETIP32EQ4R5100C60.1uF15KR22C50.1uF/100VC30.1uFC40.1uFC26800uF/63VC16800uF/63V1N5401D41N5401D31N5401D21N5401D1TIQ12DTC114TKQ112

47、SC2412KD7RLS4148D8RLS414810KR35R334.3KR347.5KC290.01uF/1KVIC1:B+50.01uF/200VC260.01uF/200VC27R2347K150PFC12Z2DZD15-TB5.6KR42TIP32CQ160.1uFC21C3422uF/63VR37470-1WR430.1/5W 1%C1822uF/63VR2910K 1%TH110K&25degCRLS4148D17R57470D11RLS414822KR451KR47R6710KR6322.1K 1%R644.99K 1%20K 1%P2R5547.5K 1%.068uFC28M

48、I1211BLACK/WHITE OR RIBSSOLID BLACK120V/60HZMATES WITH PCB CL1233BU-2 POWER BOARD (120V VERSION)LOHILNINSERVO LEVELIC1:ATL072TL072TL072INPUTFROM SHEET 1TO SHEET 1PROTECTION+-SPKROUT-TO SHEET 1FROM SHEET 1MUTEINTL072AC1CTAC2TO SHEET 1AGND1K85CTO SHEET 1AGC OUTAGNDTO SHEET 1N/CSERVO GAIN*1671TP1TP2112

49、845466725544332211AABBCCDDEEFFGG4 OHMS LOADWITHOUT LOADNOTES:*P1: REPLACED WITH FIXEDRESISTORS, R68,R69 ONLY.P2: REPLACED WITH FIXEDRESISTORS, R64,R65 ONLY.0.267V0.485V-15V-V0.273V1.2mV-V+V+15V-15V3.8mV32.5mV-15V-15V+15V+15V-15V+15V-V+V10.01V5.915V16Powered SubwooferBU2PREAMP/CROSSOVER SCHEMATIC 230

50、V VERSION17Powered SubwooferBU2POWER SCHEMATIC 230V VERSION5544332211AABBCCDDEEFFGGC28.068uF47.5K 1%R55P220K 1%4.99K 1%R6422.1K 1%R6310KR67R471KR4522KRLS4148D11470R57D17RLS414810K&25degCTH110K 1%R2922uF/63VC180.1/5W 1%R43470-1WR3722uF/63VC34C210.1uFQ16TIP32CR425.6KDZD15-TBZ2C12150PF47KR23C270.01uF/2