Infinity-BU2-sub-sm 电路图 维修手册.pdf

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1、BU2 Powered Subwoofer A Harman International Company Part No.: 1112-BU2 11/98 Technical ManualTechnical Manual INFINITY SYSTEMS INC. 250 Crossways Park Drive Woodbury, New York 11797 RadioFans.CN 收音机爱 好者资料库 1 Powered SubwooferBU2 BU2 SPECIFICATIONS Driver.12 Woofer Nominal Impedance .4 Enclosure Des

2、ign.Tuned Port Amplifier Power.100 watts RMS Frequency Response.30Hz - 150Hz ( 3dB) Crossover Frequency.50 to 200 Hz Continuously Variable Inputs Line Level .RCA jacks High Level .(Speaker) Input terminals Outputs.Full range Speaker Sensitivity Low Level .70mV High level .1.7V Input Impedance Low Le

3、vel .12K High level .4.7K Auto-Off Delay.8 minutes Dimensions Inches.14 x 14 x 14 Metric.36.8 x 36.8 x 36.8cm plus 1 (32mm) for feet Shipping Weight .43 lbs/19.5 Kg. Occasional refinements may be made to existing products without notice, but will always meet or exceed original specifications unless

4、otherwise stated. TABLE OF CONTENTS BU2 SPECIFICATIONS .1 TABLE OF CONTENTS.1 BU2 CONTROLS AND THEIR FUNCTION .2 BU2 TEST PROCEDURE.3 BLOCK DIAGRAM .4 BU2 CABINET EXPLODED VIEW .5 AMPLIFIER EXPLODED VIEW.6 BU2 MECHANICAL PARTS LIST .7 BU2 ELECTRICAL PARTS LISTS .8 BU2 PACKAGING EXPLODED VIEW .10 INT

5、EGRATED CIRCUIT DIAGRAMS.11 PCB (TOP VIEW, component side).12 PCB (BOTTOM VIEW, solder side).13 PREAMP/CROSSOVER SCHEMATIC 120V.14 AMPLIFIER SCHEMATIC 120V .15 PREAMP/CROSSOVER SCHEMATIC 230V.16 AMPLIFIER SCHEMATIC 230V .17 THIS MANUAL IS FOR THE BU2 REVISION WITHOUT AN EXTERNAL POWER SWITCH (120v O

6、nly - 230v version has a power switch) RadioFans.CN 收音机爱 好者资料库 2 Powered SubwooferBU2 BU2 CONTROLS AND THEIR FUNCTION LOW LEVEL INPUT R L L L R R POWER 50 60 200 120 80 180 VOLUME CONTROL WARNING:TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION

7、RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: SHOCK HAZARD-DO NOTOPEN. AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR. NOT SUITABLE FOR IN-WALL MOUNTING 120V60Hz 230W MODEL BU2 ONREVOFFNOM STANDBY RED HIGH LEVEL INPUT HIGH LEVEL OUTPUT FREQUENCY Hz AUTO POWER PHASE MINMAX LISTED 773L P/N WF-100i AUDIO

8、EQUIPMENT POWER ON OFF 1 2 5 6 7 8 4 3 230v ONLY 1. Auto Power - This Auto On/Off switch controls whether the BU2s Automatic turn-on circuit is active. When this switch is ON, the BU2 will turn itself on, indicated by a green LED, when it is plugged in and receiving a signal. When the BU2 has not re

9、ceived a signal for 8 - 10 minutes, the unit will revert to the STANDBY mode, indicated by a red LED. When this switch is OFF, the unit switches to the STANDBY mode and will stay OFF, regardless of input signal. THIS IS NOT A TRUE AC POWER SWITCH AS IT DOES NOT DISCONNECT THE AMPLIFIER FROM THE AC L

10、INE. 2. Standby LED - The LED will light green when the unit is plugged in and is receiving signal. When in standby mode (when the Auto mode is active but the subwoofer is receiving no signal) the LED is red. 3. High Level Inputs - These High Level Inputs are for receivers that do not have line-leve

11、l “pre-amp out” or “subwoofer out” jacks. When a pair of main or satellite speakers are attached to the OUTPUT terminals, they are driven the full range of frequencies as generated by the music source (receiver, amplifier, etc.) 4. Low Level Input - These left and right Line Level Inputs are normall

12、y used when the receiver/ processor has line-level “pre-amp out ” or “subwoofer out” jacks. If a single cable mono or subwoofer source is connected to the BU2, a Y-cable must be connected to the subwoofer for full output. 5. Frequency - The Frequency adjustment determines the upper corner roll-off p

13、oint for the BU2. 6. Phase - This controls the switch from the reverse to normal in audio signal polarity. 7. Volume Control - This controls the volume level of the subwoofer. 8. AC Power - This switch, present on the 230v version only, connects the AC line voltage to the BU2; normally it is left in

14、 the ON position. RadioFans.CN 收音机爱 好者资料库 TEST PROCEDURE Equipment needed: ?Function/signal generator/sweep generator ?Integrated Amplifier ?Multimeter ?Cables - line level (RCA) and speaker cables General FunctionUUT = Unit Under Test 1.Connect both right and left line level inputs (RCA) to signal

15、generator and UUT. Use Y-cable if necessary from mono source. VOLUME control should be full counterclockwise. 2.Turn on generator, adjust to 50mV, 50 Hz. 3.Plug in UUT; red LED should be ON. Turn VOLUME control full clockwise. 4.LED should turn Green; immediate bass response should be heard and felt

16、 from 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 be connected to an integrated amplifier fed by the signal generator. 7.Turn on generator an

17、d adjust so that speaker level output is 2.0V, 50 Hz. Turn VOLUME control full clockwise. 8.Green LED should light, immediate bass response should be heard and felt from port tube opening. Sweep Function 1.Follow steps 1 - 4 above, using a sweep generator as a signal source. 2.Sweep generator from 2

18、0Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove driver and test. Driver Function 1.Remove driver from cabinet; detach + and - wire clips. 2.Check DC resistance of driver; it should be 3.3 ohms. 3.Connect a p

19、air of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V. 4.Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises. 3 Po

20、wered SubwooferBU2 BU2 TEST PROCEDURE 4 Powered SubwooferBU2 BU2 BLOCK DIAGRAM (for 120v & 230v versions) 5 Powered SubwooferBU2 BU2 CABINET EXPLODED VIEW 6 Powered SubwooferBU2 AMPLIFIER EXPLODED VIEW BU2 Amplifier Exploded View E E D D C C B B A A 7 7 6 6 5 5 4 4 3 3 2 2 1 1 2 17 1 3 4 5 6 13 15 2

21、213 18 19 20 14 24 23 16 16 7 8 10 11 12 21 11 11 9 2 7 Powered SubwooferBU2 BU2 MECHANICAL PARTS LISTS Ref.#Part #DescriptionQty 1XX1342GASKET 1 OF 44 2XX1250Strain Relief SPT-1 Black2 3XX1275Plastic Cover For Inf. Bu-1(2)1 4NU1049Nut 8-32 x 1/4 Hex Keps Sink F4 (XFORMER) 5MI1211POWER TRANSFORMER B

22、U-21 6BR1538FRONT PLATE BU-21 7SW1082THERMOSWITCH 60 DEG C PANEL1 MOUNTED 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)1 11SC1284Screw 4-40X 3/8 TATTITE, PAN PHIL9 HEAD, BLACK ZINC

23、 FIN (HEATSINK-FRONT PLATE) 12BR1544BRACKET FOR HEATSINK BU-21 13BR1395Bracket Pwr Support Bass5502 14SP1082SPONGE W/ADHESIVE L=1/4 W=1/42 T=3/16 (TO-92) 15SP1073Sil Pad TO-3P 1.0 x 0.750 (POWER3 XTORS TO-218 1X, TO-220 2X) 16SC1194Screw 6-32x3/8 Tapt-Thr Hex Washr2 (PC BOARD BRACKET) 17HA1218SPK HA

24、RNESS AWG 18 MOLEX TO1 FASTON .187 AND .250 (PLASTIC COVER) Ref.#Part #DescriptionQty 18SC1215Screw 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-

25、THR3 PAN PHI HEAD, BLACK ZINC FSH (XTOR BAR) 22NU1059Nut 4-40Keps-Thr, Hexag. Znk Fs2 (THERMOSWITCH) 23BR1567FIN-XTOR BAR TO-218 FOR BU22 24BR1568FIN-XTOR BAR TO 220 FOR BU21 SP1072Sil Pad TO-220 0.750 x 0.5002 (TO-220 TRANSISTOR) XX1370GASKET PWR XMER 3.20 x 3.201 x 1/16 (FRONT PLATE XMER) (NOT SHO

26、WN) Ref.#Part #DescriptionQty Capacitors C1, 2CP1584CAP A.E. 6800uF,20%,63V2 C3, 4, 5, 11CP1552SMD Cap .1uF 20% 100v Z5U 12104 C6, 7, 15, 16, 21,CP1426SMD CAP 0.1uF 20% 50V Z5U18 22, 25, 38, 39,1206 T/R 110, 111, 115, 116, 117, 126, 127, 134, 135 C8, 9CP1475SMD Cap 33pF 5% 50v NPO 12062 C10, 23, 24,

27、 40,CP1496SMD CAP 100pF 10% 50V X7R 12069 41, 102, 104, 109, 133 C12CP1563SMD Cap 150pF 5% 50v NPO 12061 C13, 31CP1412Cap Alum El. 47uF 20% 16v Rad.2 C14CP1436SMD CAP 0.022uF 20% 50V Z5U1 1206 PKG. C17CP1562Cap Alum El. 330uF 20% 16v T/R1 C18, 34, 35, 36, 37 CP1645Cap Al El 22uF 20% 63V 85 Deg5 C19C

28、P1177Cap Poly Film 0.22uF 5% 63V TR1 C20CP1539Cap. Poly Fil .047uF 5% 63V TR1 C26, 27CP1844SMD CAP CERAMIC 0.01uF 10%2 200V X7R 1206 T/R C29CP1808Cap Poly Fil 0.01uF Class X21 C28, 120, 121, 122 CP1679Cap. Poly Fil .068uF 5% 63V4 C30CP1479SMD CAP 3300pF 10% 100V X7R1 C33, 125CP1495Cap Poly Film 0.1u

29、F 5% 63v T/R2 C101, 103CP1646SMD Cap 220pF 5% 50V X7R 12062 C107, 112CP1417Cap Alum El. 22uF 20% 16v T/R2 C113CP1415Cap Alum El. 2.2uF 20% 50v T/R1 C114CP1411Cap Alum El. 100uF 20% 16v T/R1 C118, 119CP1409CAP ALUM El 0.33uF 20% 50V2 T/R LS=0.100 C123CP1917CAP POLY FILM 0.12uF 5% 50V1 LS=5mm H=16.5mm

30、 T/R C124CP1916CAP POLY FILM .068uF 5% 50V1 LS=5mm H=16.5mm T/R C128CP1915CAP POLY FILM 8200pF 5% 50V1 LS=5mm H=16.5mm T/R C129CP1918CAP POLY FILM 0.27uF 5% 50V1 LS=5mm H=16.5mm T/R C130, 131CP1914CAP POLY FILM 0.039uF 5% 50V2 LS=5mm H=16.5mm T/R C132CP1678CAP POLY FILM 5600pF 5% 50V1 LS=5mm H=16.5m

31、m T/R Ref.#Part #DescriptionQty Diodes D1, 2, 3, 4DI1005Rectifier Diode 3A/200V 1N54014 D5, 6, 7, 8, 9,DI1132SMD Diode Swch LL-34 Pkg T/R11 10, 11, 16, 17,RLS4148 101, 102 D12DI1010Diode Fast Rect. 1A/100v Axial IN40021 Z1, 2DI1150SMD Zener 15v 5% CP Pkg. T/R2 Integrated Circuits IC1, 2, 102,IC1041I

32、C SMD DUAL J-FET-INPUT5 103, 104OP AMP T/R TLO72 IC101IC1162IC SMD Quad-J Fet Input OP Amp1 TLO74 Transistors Q1TR1245TIP35E TO-3P1 Q2TR1246TIP36E TO-3P1 Q3TR1247TIP32E TO-2201 Q4TR1248TIP31E TO-2201 Q5TR1043MPS2222A TO-92 Bulk1 Q6, 9, 15, 20TR11662N5401 TO-92 T/R4 Q7, 8TR11672N5551 TO-92 T/R2 Q10,

33、12, 14TR1131DTC114TK3 Q11TR11082SC2412K1 Q13TR11252SA1037K1 Q16TR1184TIP32C1 Q17TR1183TIP31C1 Resistors J1, 2, 3, 4, 5, 6,RS1779SMD RES ZERO ohm 5% 1/8W 120627 7, 8, 9, 10, 11, 12, 13, 14, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113 R1, 2, 43RS1868RES CER 0.1 ohm 5% 5W3 RADIAL BU

34、LK R3, 4RS1916RES C/F 5.1 ohm 5% 1/4W T/R2 R5RS1994RES C/F 100 ohms 5% 1/4W T/R1 R6, 20, 21, 34, 111RS1831SMD RES 7.5Kohm 5% 1/8W 12065 R7RS1871SMD RES 5.1Kohm 5% 1/8W 12061 R8RS1878SMD RES 10 ohm 5% 1/8W 12061 8 Powered SubwooferBU2 BU2 ELECTRICAL PARTS LISTS Ref.#Part #DescriptionQty R9, 10, 35, 4

35、4,RS1701SMD RES 10Kohm 5% 1/8W 120613 46, 52, 59, 67, 113, 121, 123, 127, 130 R11, 12, 15, 17RS1717SMD RES 100 ohm 5% 1/8W 12064 R13, 14, 40, 57RS1722SMD RES 470 ohm 5% 1/8W 12064 R16, 23, 26, 50, 61RS1706SMD RES 47Kohm 5% 1/8W 12065 R18, 24, 119RS1703SMD RES 2.2Kohm 5% 1/8W 12063 R19, 22RS1725SMD R

36、ES 15Kohm 5% 1/8W 12062 R25, 125RS1883SMD RES 1.5Kohm 5% 1/8W 12062 R27, 28, 29,RS1898SMD RES 10Kohm 1% 1/8W 12065 49, 56 R30RS2160SMD RES 11Kohm 1% 1/8W 12061 R31RS2468SMD RES 1Mohm 1% 1/8W 12061 R32, 54, 55RS2448SMD RES 47.5Kohms 1% 1/8W 12063 R33RS1877SMD RES 4.3Kohm 5% 1/8W 12061 R36, 37RS2180RE

37、S M/O F/P 470 ohm 5% 1W T/R2 R38, 39, 53, 58RS1705SMD RES 4.7Kohm 5% 1/8W 12064 R41, 42RS1715SMD RES 5.6Kohm 5% 1/8W 12062 R45, 126, 128,RS1704SMD RES 22Kohm 5% 1/8W 12064 129 R47RS1700SMD RES 1Kohm 5% 1/8W 12061 R48RS1782SMD RES 1.8Kohm 5% 1/8W 12061 R51RS2422RES M/O F/P 100 ohm 5% 1W T/R1 R60, 102

38、, 103,RS1702SMD RES 100Kohm 5% 1/8W 12067 104, 105, 116, 122 R62RS2449SMD RES 182Kohms 1% 1/8W 12061 R63RS1943SMD RES 22.1Kohm 1% 1/8W 12061 R64RS1957SMD RES 4.99Kohm 1% 1/8W 12061 R65RS2446SMD RES 1.18Kohms 1% 1/8W 12061 R66RS2450SMD RES 2.21Kohm 1% 1/8W 12061 R68RS1958SMD RES 18.7Kohms 1% 1/8W 120

39、61 R69RS2447SMD RES 3.65Kohms 1% 1/8W 12061 R101, 108RS1998RES C/F 4.7ohm 5% 1/4W T/R1 R109, 110RS1790SMD RES 2.7Kohm 5% 1/8W 12062 R112, 115RS1713SMD RES 56Kohm 5% 1/8W 12062 R114RS1793SMD RES 470Kohm 5% 1/8W 12061 R117RS1968SMD RES 2.2Mohm 5% 1/8W 12061 R118RS1710SMD RES 3.3Kohm 5% 1/8W 12061 R120

40、RS1892SMD RES 10Mohm 5% 1/8W 12061 Ref.#Part #DescriptionQty R124RS1767SMD RES 1Mohm 5% 1/8W 12061 R131RS1992SMD RES 390Kohm 5% 1/8W 12061 R132, 133, 134,RS1724SMD RES 6.8Kohm 5% 1/8W 12064 135 R136, 137RS2479SMD RES 14Kohm 1% 1/8W 1206 T/R1 Miscellaneous AC1, 2, CT,TE1185Terminal male type4 TI(AC-H

41、1)quick-fit 0.187 TAB CONN101HA1186HARNESS 7-POSITION 0.11 CENTER-CENTER L=4 CONN102CO1334JACK SPEAKER OCTAL PC MOUNT1 RIGHT ANGLE F1FS1067Fuse Slo-Blo 2A/250v 5x20 120v GMC1 Fuse Slo-Blo 1.6A/250v 5x20 230v GMC 1 F1 (CLIP)XX1297Fuse Clip 5x20 PC Mount2 K1RE1019Relay,12A,48VDC1 L1MI1100Inductor Air

42、Core 0.38uH1 LED101LE1032Led Bicolor Red/Green 5mm1 TH1TH1006NTC THERMISTOR 10Kohm 25DegC1 RCA101CO1407CONNECTOR RCA DUAL VERT.1 PC MOUNT WHT/RED R/A GOLD SPKOUTCO1343Strght Sq Hdr 0.156Center1 SW1507-8046 AC Power Switch 230v version only1 SW101, 102SW1084Auto On, Phase, slide switch DPDT2 T1MI1211

43、Power Transformer 120v BU21 MI1216Power Transformer 230v BU21 T2(XFORMER),TE1175Trmnl Male Tab .032x.250PC M2 T3(AC LO) T4HA1175HARNESS, POCKET TERMINAL1 TO FASTON .250, 5,#18 GRE TP1, 2TE1213TERMINAL TURRET2 VR101RS2426POT 20K DUAL 16mm B-TAPER1 SHAFT “F” PC MOUNT R/A VOLUME VR102RS2427POT 20K QUAD

44、 16mm B-TAPER1 SHAFT “F” PC MOUNT R/A FREQUENCY 9 Powered SubwooferBU2 10 Powered SubwooferBU2 BU2 PACKAGING EXPLODED VIEW 11 Powered SubwooferBU2 INTEGRATED CIRCUIT DIAGRAMS 12 Powered SubwooferBU2 PRINTED CIRCUIT BOARDS (TOP VIEW, component side) 13 Powered SubwooferBU2 PRINTED CIRCUIT BOARDS (BOT

45、TOM VIEW, solder side) 14 Powered SubwooferBU2 PREAMP/CROSSOVER SCHEMATIC 120V VERSION 15 Powered SubwooferBU2 POWER SCHEMATIC 120V VERSION 18.7K 1% R68 3.65K 1% R69 20K 1%P1 F1 2A55C THERMSW1 470 R14 47uF/16V C13 2.2K R24 C41 100pF C30 3300pF R50 47K C40 100pF 47.5K 1% R32 C38 0.1uF C39 0.1uF IC2:B

46、 - 6 + 5 7 RLS4148 D5 R31 1M 1% 470 R40 D10 RLS4148 C33 0.1uF 0.22uF C19 2.21K 1% R66 R65 1.18K 1% R62 182K 1% C20 .047uF R49 10K 1% IC2:A - 2 + 3 8 4 47.5K 1% R54 R56 10K 1% C35 22uF/63V Q10 DTC114TK RLS4148 D6 R25 1.5K R26 47K .022uF C14 1.8K R48C31 47uF/16V - 2 + 3 10K 1% R28 10K 1% R27 11K 1% R3

47、0 D16 RLS4148 K1 RELAY 10K R442SA1037K Q13 R59 10K Q14 DTC114TK 0.38uH L1 10 R8 D9 RLS4148 R46 10K 100-1W R51 2N5401 Q20 4.7K R53 10K R52 D12 IN4002 47K R61 100K R60 C17 330uF/16V 4.7K R58 R39 8.2K 0.1uF C22 R38 4.7K 0.1uF C25 0.1uF C16 TIP36E Q2 .1/5W R2 .1/5W R1 Q1TIP35E R4 5.1 R3 5.1 2N5401 Q15 C11 0.1uF/100V Q17 TIP31C DZD15-TB Z1 C37 22uF/63V 0.1uF C15 R41 5.6K C36 22uF/63V R36 470-1W C24 100pF C23 100pF MPS2222