Infinity-Overture2-sub-sm 维修电路原理图.pdf

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1、Compositions SeriesOverture 2Powered 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 TEST SET UP AND PROCEDURE . . . . . . . . .17 NOTE ON OVTR 2/3 AMPLIFIER REVISION.18 PCB DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 ELECTRICAL PARTS LIST (120V)

5、 . . . . . . . . . . . . . . . .21 ELECTRICAL PARTS LIST (230V) . . . . . . . . . . . . . . . . . . . . . . . . . .24 INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . .27 WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC (120V) . . .28 WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC (23

6、0V) . . .29 120V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 230V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Infinity continually strives to update and improve existing products, as well as create new ones. The sp

7、ecifications and construction details in this and related Infinity publications are therefore subject to change without notice. Overture 2 2RadioFans.CN 收音机爱 好者资料库Overture 23SpecificationsFrequency Response: 30Hz - 20,000Hz (3dB)Recommended Amplifier Power Range 10-150 wattsAmplifier Peak Output:300

8、VAMaximum Output:112 dB SPLSensitivity:93dB 2.83V 1 meterNominal Impedance:8Crossover Frequencies:350 and 3,000HzLow-Frequency Driver:(2) 6 1/2” (165MM) high-efficiency,dynamically-balanced, magneticallyshielded woofers.Mid-Bass Driver:(2) 5 1/4” (125mm) high-efficiency,magnetically shielded midrang

9、e driversHigh-Frequency Driver:1” (25mm) soft dome, high-efficiency,neodymium magnet, magneticallyshielded tweeterDimensions (H x W x D):38-3/4” x 6-7/8 x 15-3/4(984mm x 175mm x 400mm)Weight:47 lb./(21.4 kg) EachPower Consumption:150 watts (Maximum)* The maximum recommended amplifier power rating wi

10、ll ensure proper system headroom to allowfor occasional peaks. We do not recommend sustained operation at these maximum power levels.Detailed SpecificationsOverture 24Overture 25Wiring The SystemOverture 26Operating The SystemOverture 27Replacing The FuseOverture 28Replacing The Fuse (Cont.)Overture

11、 29Replacing 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:POWERFUSET 1.6A 250V 230V 50Hz150W MAX00435FUSEFUSEFUSE T3, 1.6A 250VOVTR 2 & 3 FUSEOverture 210Care of Y

12、our Speaker System/TroubleshootingOverture 211Mechanical/Packaging Parts List1CABINETNOT FOR SALE26.5”, WOOFER, B160-4 (120V) DCR = 14.210%2330618-0016.5”, WOOFER, LM-B160-8 (230V) DCR = 4010%2333773-0013SCREW, #8 x .75”, PPH, ZINC17900102-0124REAR WOOFER GRILLE1330955-0015FRONT/REAR WOOFER BAFFLE23

13、32334-0016AMPLIFIER CAP1331399-0017CROSSOVER NETWORK (120V)1331235-0018BASE, FRONT FOOT1331184-0019REAR BASE1331075-00210REAR BASE w/PORT1331236-00111BINDING POST (RED)1331723-00112BINDING POST (BLACK)1331724-00113SCREW, #8 x 1” PPH, ZINC15900102-01614SCREW, #6-32 x 3/8” PPHMS CADCAD PLATED21081115A

14、MPLIFIER1NOT FOR SALE161” (25MM) NEODYMIUM TWEETER DCR = 3.610%1333232-00117UPPER FRONT BAFFLE (120V)1331182-001UPPER FRONT BAFFLE (230V)1332335-00218FRONT GRILLE1333585-00119SCREW, #6 x 3/4” PPHD, BLK126356320SCREW, 4-40 x .25” PPH, ZINC2905502-004215.25”,MIDRANGE TRANSDUCER, B125-6 DCR = 7.710%233

15、0650-00122MIDRANGE CUP (120V)1330833-001PACKAGING23SPIKE FOOT SET, 1.5”1331360-00124OUTER CARTON (120V)1331245-00125FOAM PAD, TOP1331254-00126FOAM PAD, BOTTOM1331255-00127SURVEY CARD1330033-00128OWNERS MANUAL (120V)1332292-00129SAFETY SHEET1330100-00130LINE FUSE 5A 2AG SLO-BLO (120V)2FS1068 or 33192

16、5-001Ref No.DescriptionQtyPart No.Overture 212Exploded View12351978101313141535161718192032122004134111292619Overture 213PackagingOverture 214Overture 215Overture 216Overture 217Test Set Up and ProcedureSIGNALGENERATORAMPLIFIERAC VOLTMETER (10V)OVERTURE 2UNDER TESTSPEAKEROUTPUTFROMAMPLIFIER00421SYST

17、EM AURAL SWEEP TESTEquipment needed:Function/signal generator/sweep generatorHigh Gain Integrated AmplifierMultimeterSpeaker cablesGeneral Unit Function (UUT = Unit Under Test)1.From the signal generator, connect a mono cable to the Integrated amplifier; with speaker cables connect theamplifiers out

18、put 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 1.0V, 30 Hz.4.Plug in UUT; LED should be Red. Turn BASS (level) control full clockwise (9).5.LED should now be Gree

19、n 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 and drivers for any rattles, clicks, buzzes or any othernoises. If any unusual noises are heard, remove woofers and

20、 test.Driver Function8.Remove woofer from cabinet; detach + and - wire clips.9.Check DC resistance of woofer; it should be:(120v) - 14.1 Ohms 10%(230v) - 40.0 Ohms 10%10. Connect a pair of speaker cables to driver terminals. Cables should be connected to a high-gain integratedamplifier fed by a sign

21、al 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 noises.* Only the 120v version will be driven to near maximum excursion at this voltage; because of the unusually hig

22、h DCR of the voicecoil, driving the 230v version at twice this voltage is not practical with simple test equipment and 20v should suffice for testpurposes.Amplifier bias adjustment1)Power up loudspeaker and drive at low levels for 3 minutes for warm-up.2)Remove amplifier assembly (disassembly proced

23、ure 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 5W fuse resistor. (230v) .47 5W fuse resistor. Mini-grabbers can be used on the resistor leads without PCBremoval.4)Adjust POT2 (bias pot on PCB) to read 5.9

24、 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 the schematic, PCB drawings, and parts list in this service manual. This page is a guide to the identification and

25、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 SILKSCREENED AREA, BUT INSTEAD ON OPPOSITE SIDE OF PCB, CONNECTED FROM MAIN “+” ON C15, TO COLLECTOR (CENTER LEAD) ON Q12 (

26、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 not mistake T1 for a relay. (Later version has speaker output terminals in footprint of former relay) There was als

27、o 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 = 13K 1/2WR43,43b LATER VERSION = 33K 1/2W 13K 1/2W part# NLA Overture 2 18Bass Amplifier PCB, Padmaster & Solder SideO

28、verture 2 19Bass Amplifier PCB Component Side SilkscreenOverture 2 20SemiconductorsDI1004Diode Zener 6.2V 1/2W T/RZD21DI1060Diode Switching 500mW 75VD1,2,4,5,6,7,9,118DI1089Diode 1N4003 1A 200 PIVD101DI1101Diode Zener 10V 1/2W T/RZD3,4,5,64DI1186Diode Zener 36V 5% 5W T/RZD11DI1187Diode Bridge Powr 4

29、00V/8AD181IC1215IC TL064CN Quad OP AMPU1,22IC1216IC TL062CP Dual OP Amp.U31IC1045Three-Term. Adj. Pos. V R LM317TU41604-L469EGWLED Green/Red Common Cath1TR1002Transistor NPN TO-92 2N3904Q1,5,73TR1017Transistor PNP T/R 2N3906Q2,3,6,84TR1257MOSFET Power IRFS250Q13,14,15,164TR1259Transistor NPN BF469Q4

30、,9,123TR1260Transistor PNP BF470Q101TR1304Transistor NPN 60V/3A 25W 2SD2012Q111CapacitorsCP1126Cap Poly Film 1uF 10% 50VC191CP1630Cap Alum El 220uF 20% 25vC201CP1656Cap Alum EL 100uF 20% NPEC21CP1657Cap Alum EL 220uF 20% NPEC31CP1658Cap Disc 100pF 10% 500VC4,12,14,304CP1659Cap NPE 10uF 20% 25V T/RC1

31、11CP1660Cap Alum EL 1000uF 20% 200VC152CP1661Cap Alum EL 100uF 20% 5C161CP1662Cap Alum EL 10uF 20% 35C17,18,22,23,255CP1663Cap Alum EL 47uF 20% 25C211CP1664Cap Alum EL 4.70uF 20%C242CP1665Cap Alum EL 10uF 20% 63C281CP1666Cap Cer Disc 68pF 20% 500C31,322CP1667Cap Poly Film 0.47uF 10%C331CP1668Cap Alu

32、m EL 47uF 20% 10C361CP1669Cap Poly Film .10uF 10% 4C401CP1672Cap Poly 0.22uF 5% 63V T/C5,6,133CP1673Cap Poly Film 1nF 10% 50VC261CP1674Cap Alum EL 1uF 20% 50VC271CP1675Cap Poly Film 0.1uF 5% 50VC7,37,38,39,425CP1677Cap Poly 0.033uF 5% 50V TC411ResistorsRS1036RES M/F 36 ohm 5% 1/4WR741RS1058RES M/F 5

33、1.1Kohm 1% 1/4WR631RS1063RES M/F 1 Mohm 1% 1/4WR391RS1150RES M/F 43.2Kohm 1% 1/4WR561RS1153RES M/F 47.5Kohm 1% 1/4WR291RS1161RES M/F 11Kohm 1% 1/4WR201RS1268RES M/F 2.21Kohm 1% 1/4WR801RS1342RES M/F 9.09Kohm 1% 1/4WR521Electrical Parts List (120v)Part#DescriptionRef DesignationQtyOverture 2 21RS1351

34、RES M/F 13Kohm 1% 1/4WR481RS1353RES 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% 1/4WR241RS1455RES 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% 1/4

35、WR471RS1585RES M/F 475 ohm 1% 1/4WR51RS2018RES M/F 10Kohm 1% 1/4WR9,10,13,18,265RS2019RES M/F 20Kohm 1% 1/4WR2,41,58,69,70,716RS2025RES M/F 9.31Kohm 1% 1/4WR11RS2125RES M/F 59Kohm 1% 1/4WR71RS2128RES M/F 6.65Kohm 1% 1/4WR81RS2130RES M/F 432 ohm 1% 1/4WR111RS2131RES M/F 536Kohm 1% 1/4WR151RS2133RES M

36、/F 69.8Kohm 1% 1/4WR171RS2135RES M/F 39.2Kohm 1% 1/4WR191RS2137RES M/F 5.76Kohm 1% 1/4WR21,222RS2139RES M/F 200 ohm 1% 1/4WR251RS2140RES M/F 619Kohm 1% 1/4WR321RS2141RES M/F 110Kohm 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%

37、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 Fuse 0.22ohm 5% 1/2WR65,67,77,794RS2151RES M/O F/P 1Kohm 5% 2WR681RS2152RES M/F 75Kohm 1% 1/4WR811RS2153 or 146-6461Potentiom

38、eter 20Kohm 20% BASS GAINR43,43B1RS2154Potentiometer 2Kohm BIAS ADJP21RS2155RES C/F 33Kohm 5% 1/2WR43,43B2RS2158RES M/F 3.3Kohm 5% 1/4WR751RS2181RES M/F 2.21Mohm 1% 1/4WR28,312RS2283RES M/O F/P 5.1Kohm 5% 5WR231MiscellaneousSC1082SC 6-32x 3/4 Mach-Thr, Pa2SC1099SC 6-32x 1/4 Mach-Thr Pan6SC1240SC 6-3

39、2x 1/2 Mach-Thr Pan4SC1277SC 5-20 x1/2 Hi-Lo Pan Phi2ST1022Standoff #6 x 5/16 Nylon2TH1017Inrush Current LimiterCL11VA1009Varistor 200VM0V11XX1278Cntrl Pnl Plstc 1XX1279 or 331944-001Knob for Gain Potentiometer1Electrical Parts List (120v)Part#DescriptionRef DesignationQtyOverture 2 22XX1280Power Co

40、rd 12Ft 16AWG1XX1284Strain Relief Black1XX1302Logo-Led Plate1BR1412Clamp, Transistor 2BR1415Plate Top 1MI1155Transformer, Coupling T111NU1050Nut 6-32x 1/4 Hexagonal K2FH1004Fuseholder 2AG Chassis Mo1FS1068 or 331925-001Line Fuse 5A 2AG SLO-BLO (120V)F11RE1019Relay,12A,48VDCK21Electrical Parts List (

41、120v)Part#DescriptionRef DesignationQtyOverture 2 23SEMICONDUCTORSDI1186Diode Zener 36V 5% 5W T/R1DI1224DIODE PWR RECT 800V/3A1IC1045Three-Term. Adj. Pos. V R LM317T1IC1215IC TL064CN Quad OP AMP2IC1216IC TL062CP Dual OP Amp.1TR1304Transistor NPN 60V/3A 25W 2SD20121TR1002Transistor NPN TO-92 2N39043T

42、R1017Transistor PNP T/R 2N39064TR1316Xsistor ZTX658 NPN3TR1317Xsistor ZTX758 PNP1TR1318Pwr Mosfet STH16NA40FI2DI1060Diode Switching 500mW 75V8DI1003Diode Rectifier 1N40042DI1004DIODE ZENER 6.2V 1/2W T/R1604-L469EGWLed Green/Red Common Cath1CAPACITORSCP1126CAP POLY FILM 1uF 10% 50V1CP1656Cap. Al El 1

43、00uF 20% NPE1CP1659Cap. NPE 10uF 20% 25V T/R1CP1661Cap. Alum El. 100uF 20% 51CP1662Cap. 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/3CP1673Cap. Pol Fil 1nF 10% 50V1C

44、P1674Cap. Alum El. 1uF 20% 50V1CP1675Cap. Pol Fil 0.1uF 5% 50V5CP1677Cap Poly 0.033uF 5% 50V T1CP1804Cap 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% 100V1CP1658Cap. Disc 100

45、pF 10% 500V3CP1897CAP AE 2200uF 20% 25V1CP1904CAP POLY 0.022uF 20% 250V1RESISTORSRS2369POTENTIOMETER 1Kohm BIAS ADJ1RS2296RES M/O F/P 62Kohm 5% 2W2RS2301Res Fuse 0.47 ohm 5% T/R2RS2151RES M/O F/P 1Kohm 5% 2W1RS2464RES W/W 20Kohm 5% 6W T/R1RS2025RES M/F 9.31Kohm 1% 1/4W1RS2370RES M/F 37.4Kohm 1% 1/4W

46、1RS2139RES M/F 200 ohm 1% 1/4W1Electrical Parts List (230v)Part#DescriptionQtyOverture 2 24RS1095RES M/F 1.54Kohm 1% 1/4W1RS2125RES M/F 59Kohm 1% 1/4W1RS2128RES M/F 6.65Kohm 1% 1/4W1RS1479RES M/F 2.43Kohm 1% 1/4W1RS2018RES M/F 10Kohm 1% 1/4W5RS2131RES M/F 536Kohm 1% 1/4W1RS2133RES M/F 69.8Kohm 1% 1/

47、4W1RS2380RES M/F 1.69Kohm 1% 1/4W1RS1161RES M/F 11Kohm 1% 1/4W1RS2137RES M/F 5.76Kohm 1% 1/4W2RS1342RES M/F 9.09Kohm 1% 1/4W2RS2295RES M/F 511 ohm 1% 1/4W1RS2143RES M/F 3.32Kohm 1% 1/4W2RS1153RES M/F 47.5Kohm 1% 1/4W1RS1492RES M/F 221Kohm 1% 1/4W1RS2181RES M/F 2.21Mohm 1% 1/4W2RS2146RES M/F 1.5Mohm

48、1% 1/4W1RS2141RES M/F 110Kohm 1% 1/4W1RS2142RES M/F 100Kohm 1% 1/4W3RS1455RES M/F 150Kohm 1% 1/4W2RS1505RES M/F 475Kohm 1% 1/4W1RS1063RES M/F 1 Mohm 1% 1/4W1RS2019RES M/F 20Kohm 1% 1/4W2RS2144RES M/F 1.3Kohm 1% 1/4W2RS2297RES M/F 3.3Mohm 1% 1/4W1RS2147RES M/F 249Kohm 1% 1/4W1RS2307RES M/F 182Kohm 1%

49、 1/4W1RS1351RES M/F 13Kohm 1% 1/4W1RS2298RES M/F 301Kohm 1% 1/4W1RS1353RES M/F 3.01Kohm 1% 1/4W2RS1357RES M/F 100 ohm 1% 1/4W1RS1150RES M/F 43.2Kohm 1% 1/4W1RS2299RES M/F 1.4Kohm 1% 1/4W1RS2300RES M/F 374Kohm 1% 1/4W1RS2306Res Fuse 6.8Kohm 5% 1/3W3RS1058RES M/F 51.1Kohm 1% 1/4W1RS2149Res. Fuse 1Kohm

50、 5% 1/4W T2RS2302RES M/F 4.42Kohm 1% 1/4W1RS2303RES M/F 39.2Kohm 1% 1/4W3RS2304Res Fuse 2Kohm 5% 1/3W T/2RS2305Res Fuse 75 ohm 5% 1/3W T1RS2152RES M/F 75Kohm 1% 1/4W1RS2147RES M/F 249Kohm 1% 1/4W1RS2153 or 146-6461 Potentiometer 20Kohm 20% BASS GAIN1Electrical Parts List (230v)Part#DescriptionQtyOve