Infinity-Overture3-sub-sm 维修电路原理图.pdf

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1、Compositions SeriesOverture 3Powered LoudspeakersService ManualInfinity Systems, Inc250 Crossways Park Dr.Woodbury, New York 11797Rev1 5/2004RadioFans.CN 收音机爱 好者资料库TABLE OF CONTENTS SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 DETAILED SPECIFICATIONS .

2、. . . . . . . . . . . . . . . . . . . . . . . . . . .4 WIRING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 OPERATING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 REPLACING THE FUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . .7 CARE OF YOUR SPEAKER SYSTEM/TROUBLESHOOTING . . .10 MECHANICAL/PACKAGING PARTS LIST . . . . . . .11 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 SERVICE BU

4、LLETIN INF9704 NOV. 1997 .14 SERVICE BULLETIN INF9705 NOV. 1997 . . . . . . . . . . . . . . .16 SERVICE BULLETIN INF9802 JUNE 1998. . . . . . . . . . . . . . .17 TEST SET UP AND PROCEDURE . . . . . . . . .18 NOTE ON OVTR 2/3 AMPLIFIER REVISION.19 PCB DRAWINGS . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . . . . . . . .20 ELECTRICAL PARTS LIST (120V) . . . . . . . . . . . . . . . .22 ELECTRICAL PARTS LIST (230V) . . . . . . . . . . . . . . . . . . . . . . . . . .25 INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . .28 WIRING DIAGRAM/CROSSOVER NETWORK SCHEM

6、ATIC (120V) . . .29 WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC (230V) . . .30 120V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 230V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Infinity continually strives to update

7、 and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. Overture 3 2RadioFans.CN 收音机爱 好者资料库Overture 33SpecificationsOverture 3 Frequency Response: 25Hz - 20,000Hz

8、 (3dB)Recommended Amplifier Power Range 10-200 watts*Amplifier Peak Output:500VAMaximum Output:115 dB SPLSensitivity:94 dB 2.83V 1 meterNominal Impedance:8Crossover Frequencies:350 and 3,000HzLow-Frequency Driver:(4) 6-1/2” (165mm) high efficiency,dynamically balanced, magneticallyshielded woofers.M

9、idrange Driver:(2) 5-1/4” (125mm) high-efficiency,magnetically shielded midrange drivers.High-Frequency Driver:(1) 1” (25mm) soft dome, high-efficiency, neodymium magnet,magnetically shielded tweeter.Dimensions (H x W x D):46 x 6-7/8 x 15-3/4(1,168mm x 175mm x 400mm)Weight:59 lb/(26.8 kg)Power Consu

10、mption:300 watts (Maximum)* The maximum recommended amplifier power rating will ensure proper system headroom to allowfor occasional peaks. We do not recommend sustained operation at these maximum power levels.Detailed SpecificationsOverture 34Overture 35Wiring The SystemOverture 36Operating The Sys

11、temOverture 37Operating The System/Replacing The FuseOverture 38Replacing the Fuse (Cont.)Overture 39Replacing The Fuse (Cont.)UTILSER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBREFOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE OF FUSE: T1.6A 250VCAUTION:ATTENTION:POWERFU

12、SET 1.6A 250V 230V 50Hz150W MAX00435FUSEFUSEFUSE T3, 1.6A 250VOVTR 2 & 3 FUSEOverture 310TroubleshootingOverture 311Mechanical Parts ListRef No.DescriptionQtyPart No.1CABINETNOT FOR SALE26.5”, WOOFER, B160-4 (120V) DCR = 14.210%4330618-0016.5”, WOOFER, LM-B160-8 (230V) DCR = 4010%4333773-0013SCREW,

13、#8 x .75”, PPH, ZINC25900102-0124REAR WOOFER GRILLE2330955-0015FRONT/REAR WOOFER BAFFLE4332334-0016AMPLIFIER CAP1331399-0017CROSSOVER NETWORK (120V)1334416-0018BASE, FRONT FOOT1331184-0019REAR BASE1331075-00210REAR BASE w/PORT1331236-00111BINDING POST (RED)1331723-00112BINDING POST (BLACK)1331724-00

14、113SCREW, #8 x 1” PPH, ZINC15900102-01614SCREW, #6-32 x 3/8” PPHMS CADCAD PLATED21081115AMPLIFIER1NOT FOR SALE161” (25MM) NEODYMIUM TWEETER DCR = 3.610%1333232-00117UPPER FRONT BAFFLE (120V)1331182-001UPPER FRONT BAFFLE (230V)1332335-00218FRONT GRILLE1333584-00119SCREW, #6 x 3/4” PPHD, BLK206356320S

15、CREW, 4-40 x .25” PPH, ZINC2905502-004215.25”,MIDRANGE TRANSDUCER, B125-6 DCR = 7.710%2330650-00122MIDRANGE CUP (120V)1330833-00123HI-FREQ. TWEETER GASKET1331725-001PACKAGING24SPIKE FOOT SET, 1.5”1331360-00125OUTER CARTON (120V)1331246-00126FOAM PAD, TOP1331254-00127FOAM PAD, BOTTOM1331255-00128SURV

16、EY CARD1330033-00129OWNERS MANUAL (120V)1332293-00130SAFETY SHEET1330100-00131LINE FUSE 5A 2AG SLO-BLO (120V)2FS1068 or 331925-001Overture 312Exploded View1234519432781011121313142156351918191716321202290043723Overture 313PackagingOverture 314Overture 315Overture 316Overture 317Overture 318Test Set

17、Up and ProcedureSIGNALGENERATORAMPLIFIERAC VOLTMETER (10V)OVERTURE 3UNDER TESTSPEAKEROUTPUTFROMAMPLIFIER00421SYSTEM AURAL SWEEP TESTEquipment needed:Function/signal generator/sweep generatorHigh Gain Integrated AmplifierMultimeterSpeaker cablesGeneral Unit Function (UUT = Unit Under Test)1.From the

18、signal generator, connect a mono cable to the Integrated amplifier; with speaker cables connect the amplifiersoutput to the UUT Speaker binding posts.2.On the UUT, turn the BASS (level) control full counterclockwise (1).3.Turn on generator, adjust so that the output at the Integrated amplifier is 2.

19、0V, 40 Hz.4.Plug in UUT; LED should be Red. Turn BASS (level) control full clockwise (9).5.LED should now be Green and immediate bass response should be heard (and observed if the grille is removed).Sweep Function6.Follow steps 1-5 above.7.Sweep generator from 20Hz to 300Hz. Listen to the cabinet an

20、d drivers for any rattles, clicks, buzzes or any other noises. Ifany unusual noises are heard, remove woofers and test.Driver Function8.Remove woofer from cabinet; detach + and - wire clips.9.Check DC resistance of woofer; it should be:(120v) - 14.2 Ohms 10%(230v) - 40.0 Ohms 10%10. Connect a pair o

21、f speaker cables to driver terminals. Cables should be connected to a high-gain integratedamplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 20.0V. * 11. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual nois

22、es.* Only the 120v version will be driven to near maximum excursion at this voltage; because of the unusually high DCR of the voice coil,driving the 230v version at twice this voltage is not practical with simple test equipment and 20v should suffice for test purposes.Amplifier bias adjustment1)Powe

23、r up loudspeaker and drive at low levels for 3 minutes for warm-up.2)Remove amplifier assembly (disassembly procedure in bulletin INF9704 Page 15).3)Power up on the bench; attach DMM (on low DC voltage range) across TP1 and TP2 on schematic R77 - (120v) .22 5Wfuse resistor. (230v) .47 5W fuse resist

24、or. Mini-grabbers can be used on the resistor leads without PCB removal.4)Adjust POT2 (bias pot on PCB) to read 5.9 mV for both 120v and 230v units.IMPORTANT NOTE ON OVTR 2/3 AMPLIFIER REVISION There was an early version of the Overture 2 and 3 Amplifier that is represented slightly inaccurately in

25、the schematic, PCB drawings, and parts list in this service manual. This page is a guide to the identification and differences to this earlier version. The drawing below is a later version of the PCB, complete with this information. NLA = No Longer Available ORIGINAL VERSION = R80 IS NOT IN SILKSCRE

26、ENED AREA, BUT INSTEAD ON OPPOSITE SIDE OF PCB, CONNECTED FROM MAIN “+” ON C15, TO COLLECTOR (CENTER LEAD) ON Q12 (BF469). Q11 ORIGINAL VERSION = MPSU06Q11 LATER VERSION = 2SD2012 (DO NOT SUBSTITUTE - PIN LAYOUT DIFFERENT !) MPSU06 part# NLA ORIGINAL VERSION = TWO RELAYSLATER VERSION = ONE RELAY Do

27、not mistake T1 for a relay. (Later version has speaker output terminals in footprint of former relay) There was also a version with two relays that had the output terminals on the indicted relay bypassed with buss wire, rendering it inoperative. ORIGINAL RELAY part# NLA R43,43b ORIGINAL VERSION = 13

28、K 1/2WR43,43b LATER VERSION = 33K 1/2W 13K 1/2W part# NLA Overture 3 19Amplifier PCB Solder SideOverture 3 20Bass Amplifier PCB Component Side SilkscreenOverture 3 21Electrical Parts List (120V)Part#DescriptionRef DesignationQtyCapacitorsCP1126Cap Poly Film 1uF 10% 50VC191CP1630Cap Alum EL 220uF 20%

29、 25vC201CP1656Cap Alum EL 100uF 20% NPEC21CP1657Cap Alum EL 220uF 20% NPEC31CP1658Cap Disc 100pF 10% 500VC4,12,14,304CP1659Cap NPE 10uF 20% 25V T/RC111CP1660Cap Alum EL 1000uF 20% 200VC15,352CP1661Cap Alum EL 100uF 20% 5C161CP1662Cap Alum EL 10uF 20% 35C17,18,22,23,255CP1663Cap Alum EL 47uF 20% 25C2

30、11CP1664Cap Alum EL 4.70uF 20%C24,292CP1665Cap Alum EL 10uF 20% 63C281CP1666Cap Cer Disc 68pF 20% 500C31,322CP1667Cap Poly Film 0.47uF 10%C331CP1668Cap Alum EL 47uF 20% 10C361CP1669Cap Poly Film .10uF 10% 4C401CP1672Cap Poly Film 0.22uF 5% 63V T/C5,6,7,134CP1673Cap Poly Film 1nF 10% 50VC261CP1674Cap

31、 Alum EL 1uF 20% 50VC271CP1675Cap Poly Film 0.1uF 5% 50VC37,38,39,424CP1676Cap Poly Film .022uF 5%C411SemiconductorsDI1004 Diode Zener 6.2V 1/2W T/R ZD2 1DI1060 Diode Switching 500mW 75V D1,2,4,5,6,7,9,11 8DI1089 Diode 1N4003 1A 200 PIV D10 1DI1101 Diode Zener 10V 1/2W T/R ZD3,4,5,6 4DI1186 Diode Ze

32、ner 36V 5% 5W T/R ZD1 1DI1187 Diode Bridge Powr 400V/8AD18 1IC1215 IC TL064CN Quad OP AMPU1,2 2IC1216 IC TL062CP Dual OP Amp. U3 1IC1045 Three-Term. Adj. Pos. V R LM317TU4 1604-L469EGW LED Green/Red Common Cath 1TR1002 Transistor NPN TO-92 2N3904 Q1,5,7 3TR1017 Transistor PNP T/R 2N3906 Q2,3,6,8 4TR

33、1257 MOSFET Power IRFS250 Q13,14,15,16 4TR1259 Transistor NPN BF469 Q4,9,12 3TR1260 Transistor PNP BF470 Q10 1TR1304 Transistor NPN 60V/3A 25W 2SD2012 Q11 1ResistorsRS1036RES M/F 36 ohm 5% 1/4WR741RS1058RES M/F 51.1Kohm 1% 1/4WR631RS1063RES M/F 1 Mohm 1% 1/4WR391RS1150RES M/F 43.2Kohm 1% 1/4WR561RS1

34、153RES M/F 47.5Kohm 1% 1/4WR291RS1268RES M/F 2.21Kohm 1% 1/4WR801RS1342RES M/F 9.09Kohm 1% 1/4WR521Overture 3 22RS1351RES M/F 13Kohm 1% 1/4WR9,10,20,484RS1353RES M/F 3.01Kohm 1% 1/4WR50,51,573RS1355RES M/F 4.75Kohm 1% 1/4WR61RS1357RES M/F 100 ohm 1% 1/4WR541RS1370RES M/F 3.57Kohm 1% 1/4WR241RS1455RE

35、S M/F 150Kohm 1% 1/4WR35,36,493RS1492RES M/F 221Kohm 1% 1/4WR301RS1505RES M/F 475Kohm 1% 1/4WR371RS1562RES M/F 82.5Kohm 1% 1/4WR471RS1585RES M/F 475 ohm 1% 1/4WR51RS2018RES M/F 10Kohm 1% 1/4WR13,18,263RS2019RES M/F 20Kohm 1% 1/4WR2,41,58,69,70,716RS2025RES M/F 9.31Kohm 1% 1/4WR11RS2099RES M/F 6.98Ko

36、hm 1% 1/4WR21,222RS2126RES M/F 69.8Kohm 1% 1/4WR71RS2128RES M/F 6.65Kohm 1% 1/4WR81RS2130RES M/F 432 ohm 1% 1/4WR111RS2131RES M/F 536Kohm 1% 1/4WR151RS2133RES M/F 69.8Kohm 1% 1/4WR171RS2136RES M/F 53.6Kohm 1% 1/4WR191RS2139RES M/F 200 ohm 1% 1/4WR251RS2140RES M/F 619Kohm 1% 1/4WR321RS2141RES M/F 110

37、Kohm 1% 1/4WR331RS2142RES M/F 100Kohm 1% 1/4WR34,38,533RS2143RES M/F 3.32Kohm 1% 1/4WR27,40,46,554RS2144RES M/F 1.3Kohm 1% 1/4WR42,602RS2146RES M/F 1.5Mohm 1% 1/4WR441RS2147RES M/F 249Kohm 1% 1/4WR451RS2148RES M/F 130Kohm 1% 1/4WR591RS2149RES Fuse 1Kohm 5% 1/4W TR61,62,64,66,72,73,76,788RS2150RES Fu

38、se 0.22ohm 5% 1/2WR65,67,77,794RS2151RES M/O F/P 1Kohm 5% 2WR681RS2152RES M/F 75Kohm 1% 1/4WR811RS2153 or 146-6461Potentiometer 20Kohm 20% BASS GAIN1RS2154Potentiometer 2Kohm BIAS ADJP21RS2155RES C/F 33Kohm 5% 1/2WR43,43B2RS2158RES M/F 3.3Kohm 5% 1/4WR751RS2181RES M/F 2.21Mohm 1% 1/4WR28,312RS2283RE

39、S M/O F/P 5.1Kohm 5% 5WR231MiscellaneousSC1082SC 6-32x 3/4 Mach-Thr, Pa2SC1099SC 6-32x 1/4 Mach-Thr Pan6SC1240SC 6-32x 1/2 Mach-Thr Pan4SC1277SC 5-20 x1/2 Hi-Lo Pan Phi2SP1086Clamp Insulator2ST1022Standoff #6 x 5/16 Nylon2TH1017Inrush Current LititerCL11VA1009Varistor 200VMOV11Electrical Parts List

40、(120V)Part#DescriptionRef DesignationQtyOverture 3 23XX1278Cntrl Pnl Plstc 1XX1279 or 331944-001KNOB FOR GAIN POTENTIOMETER1XX1280Power Cord 12Ft 16AWG1XX1284Strain Relief Black1XX1302Logo-Led Plate 1BR1415Plate Top 1FH1004Fuseholder 2AG Chassis Mo1FS1068 or 331925-001LINE FUSE 5A 2AG SLO-BLO (120V)

41、F11HS1145Heatsink 1MI1155Transformer, Coupling T11NU1050Nut 6-32x 1/4 Hexagonal K2RE1019Relay,12A,48VDCK21Electrical Parts List (120V)Part#DescriptionRef DesignationQtyOverture 3 24Electrical Parts List (230V)Part#DescriptionQtySEMICONDUCTORSDI1186Diode Zener 36V 5% 5W T/R1DI1224DIODE PWR RECT 800V/

42、3A1IC1045Three-Term. Adj. Pos. V R LM317T1IC1215IC TL064CN Quad OP AMP2IC1216IC TL062CP Dual OP Amp1TR1304Transistor NPN 60V/3A 25W 2SD20121TR1002Transistor NPN TO-92 2N39043TR1017Transistor PNP T/R 2N39064TR1316Xsistor ZTX658 NPN3TR1317Xsistor ZTX758 PNP1TR1318Pwr Mosfet STH16NA40FI2DI1060Diode Swi

43、tching 500mW 75V8DI1003Diode Rectifier 1N40042DI1004DIODE ZENER 6.2V 1/2W T/R1604-L469EGWLed Green/Red Common Cathode1RESISTORSRS1058RES M/F 51.1Kohm 1% 1/4W1RS1063RES M/F 1 Mohm 1% 1/4W1RS1150RES M/F 43.2Kohm 1% 1/4W1RS1153RES M/F 47.5Kohm 1% 1/4W1RS1342RES M/F 9.09Kohm 1% 1/4W2RS1351RES M/F 13Kohm

44、 1% 1/4W2RS1353RES M/F 3.01Kohm 1% 1/4W2RS1357RES M/F 100 ohm 1% 1/4W1RS1366RES M/F 2.00Kohm 1% 1/4W1RS1455RES M/F 150Kohm 1% 1/4W2RS1479RES M/F 2.43Kohm 1% 1/4W1RS1492RES M/F 221Kohm 1% 1/4W1RS1505RES M/F 475Kohm 1% 1/4W1RS2018RES M/F 10Kohm 1% 1/4W5RS2019RES M/F 20Kohm 1% 1/4W2RS2025RES M/F 9.31Ko

45、hm 1% 1/4W1RS2099RES M/F 6.98Kohm 1% 1/4W2RS2128RES M/F 6.65Kohm 1% 1/4W1RS2131RES M/F 536Kohm 1% 1/4W1RS2139RES M/F 200 ohm 1% 1/4W1RS2141RES M/F 110Kohm 1% 1/4W1RS2142RES M/F 100Kohm 1% 1/4W3RS2143RES M/F 3.32Kohm 1% 1/4W2RS2144RES M/F 1.3Kohm 1% 1/4W2RS2146RES M/F 1.5Mohm 1% 1/4W1RS2149Res. Fuse

46、1Kohm 5% 1/4W T2RS2152RES M/F 75Kohm 1% 1/4W1RS2181RES M/F 2.21Mohm 1% 1/4W2RS2295RES M/F 511 ohm 1% 1/4W1RS2297RES M/F 3.3Mohm 1% 1/4W1RS2147RES M/F 249Kohm 1% 1/4W1RS2298RES M/F 301Kohm 1% 1/4W1RS2299RES M/F 1.4Kohm 1% 1/4W1Overture 3 25RS2300RES M/F 374Kohm 1% 1/4W1RS2302RES M/F 4.42Kohm 1% 1/4W1

47、RS2303RES M/F 39.2Kohm 1% 1/4W3RS2304Res Fuse 2Kohm 5% 1/3W T/2RS2305Res Fuse 75 ohm 5% 1/3W T1RS2306Res Fuse 6.8Kohm 5% 1/3W3RS2307RES M/F 182Kohm 1% 1/4W1RS2396RES M/F 1.58Kohm 1% 1/4W1RS1154RES M/F 31.6Kohm 1% 1/4W1RS2133RES M/F 69.8Kohm 1% 1/4W2RS2151RES M/O F/P 1Kohm 5% 2W1RS2296RES M/O F/P 62K

48、ohm 5% 2W2RS2301Res Fuse 0.47 ohm 5% T/R2RS2464RES W/W 20Kohm 5% 6W T/R1RS2153 or 146-6461Potentiometer 20Kohm 20% BASS GAIN1RS2369POTENTIOMETER 1Kohm BIAS ADJ1CAPACITORSCP1126CAP POLY FILM 1uF 10% 50V1CP1656Cap. Al El 100uF 20% NPE1CP1659Cap. NPE 10uF 20% 25V T/R1CP1661Cap. Alum El. 100uF 20% 51CP1

49、662Cap. Alum El. 10uF 20% 355CP1663Cap. Alum El. 47uF 20% 251CP1664Cap. Alum EL. 4.70uF 20%1CP1666Cap Cer Disc 68pF 20% 5002CP1669Cap. Poly Fil 10uF 10% 41CP1672Cap Poly 0.22uF 5% 63V T/4CP1673Cap. Pol Fil 1nF 10% 50V1CP1674Cap. Alum El. 1uF 20% 50V1CP1675Cap. Pol Fil 1uF 5% 50V4CP1676Cap. Pol Fil .

50、022 uF 5%1CP1804Cap Alum El 270uF 400V1CP1805Cap Alum El 22uF 20% 100V1CP1806Cap Poly Fil 0.22uF 10% 41CP1807Cap Al El 22uF 20% 250V1CP1828Cap Alum El 390uF 20% 2001CP1829Cap Al El 4.7uF 20% 100V1CP1904CAP POLY 0.022uF 20% 250V1CP1658Cap. Disc 100pF 10% 500V3CP1897CAP Alum El 2200uF 20% 25V1MISCELLA