Infinity-Overture3-ps-sm维修电路原理图.pdf

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1、Compositions Series Overture 3 Powered Loudspeakers Service Manual Infinity Systems, Inc 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 5/2004 RadioFans.CN 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 BULL

4、ETIN 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 SCHEMAT

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

7、nd 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 2 RadioFans.CN Overture 3 3 Specifications Overture 3 Frequency Response: 25Hz - 20,000Hz (3dB) R

8、ecommended Amplifier Power Range 10-200 watts* Amplifier Peak Output:500VA Maximum Output:115 dB SPL Sensitivity:94 dB 2.83V 1 meter Nominal Impedance:8 Crossover Frequencies:350 and 3,000Hz Low-Frequency Driver:(4) 6-1/2” (165mm) high efficiency, dynamically balanced, magnetically shielded woofers.

9、 Midrange 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) P

10、ower Consumption:300 watts (Maximum) * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels. RadioFans.CN Detailed Specifications Overture 3 4 Overture 3 5 Wiring The Sys

11、tem Overture 3 6 Operating The System Overture 3 7 Operating The System/Replacing The Fuse Overture 3 8 Replacing the Fuse (Cont.) Overture 3 9 Replacing The Fuse (Cont.) UTILSER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE

12、 OF FUSE: T1.6A 250V CAUTION:ATTENTION: POWERFUSE T 1.6A 250V 230V 50Hz 150W MAX 00435 F U S E F U S E FUSE T3, 1.6A 250V OVTR 2 with speaker cables connect the amplifiers output to the UUT Speaker binding posts. 2.On the UUT, turn the BASS (level) control full counterclockwise (1). 3.Turn on genera

13、tor, adjust so that the output at the Integrated amplifier is 2.0V, 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 Function 6.Follow steps 1-5

14、above. 7.Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofers and test. Driver Function 8.Remove woofer from cabinet; detach + and - wire clips. 9.Check DC resistance of woofer; it s

15、hould be: (120v) - 14.2 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 integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 20.0V. * 11. Sweep generator from 2

16、0Hz 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 high DCR of the voice coil, driving the 230v version at twice this voltage is not practical with simple test equ

17、ipment and 20v should suffice for test purposes. Amplifier bias adjustment 1)Power 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 T

18、P1 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 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 v

19、ersion 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 differences to this earlier version. The drawing below is a later version of the PCB, complete with

20、 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 (BF469). Q11 ORIGINAL VERSION = MPSU06 Q11 LATER VERSION = 2SD2012 (DO NOT SUBSTITUTE - PIN LAYOUT D

21、IFFERENT !) MPSU06 part# NLA ORIGINAL VERSION = TWO RELAYS LATER VERSION = ONE RELAY Do 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 bus

22、s wire, rendering it inoperative. ORIGINAL RELAY part# NLA R43,43b ORIGINAL VERSION = 13K 1/2W R43,43b LATER VERSION = 33K 1/2W 13K 1/2W part# NLA Overture 3 19 Amplifier PCB Solder Side Overture 3 20 Bass Amplifier PCB Component Side Silkscreen Overture 3 21 Electrical Parts List (120V) Part#Descri

23、ptionRef DesignationQty Capacitors CP1126Cap Poly Film 1uF 10% 50VC191 CP1630Cap Alum EL 220uF 20% 25vC201 CP1656Cap Alum EL 100uF 20% NPEC21 CP1657Cap Alum EL 220uF 20% NPEC31 CP1658Cap Disc 100pF 10% 500VC4,12,14,304 CP1659Cap NPE 10uF 20% 25V T/RC111 CP1660Cap Alum EL 1000uF 20% 200VC15,352 CP166

24、1Cap Alum EL 100uF 20% 5C161 CP1662Cap Alum EL 10uF 20% 35C17,18,22,23,255 CP1663Cap Alum EL 47uF 20% 25C211 CP1664Cap Alum EL 4.70uF 20%C24,292 CP1665Cap Alum EL 10uF 20% 63C281 CP1666Cap Cer Disc 68pF 20% 500C31,322 CP1667Cap Poly Film 0.47uF 10%C331 CP1668Cap Alum EL 47uF 20% 10C361 CP1669Cap Pol

25、y Film .10uF 10% 4C401 CP1672Cap Poly Film 0.22uF 5% 63V T/C5,6,7,134 CP1673Cap Poly Film 1nF 10% 50VC261 CP1674Cap Alum EL 1uF 20% 50VC271 CP1675Cap Poly Film 0.1uF 5% 50VC37,38,39,424 CP1676Cap Poly Film .022uF 5%C411 Semiconductors DI1004 Diode Zener 6.2V 1/2W T/R ZD2 1 DI1060 Diode Switching 500

26、mW 75V D1,2,4,5,6,7,9,11 8 DI1089 Diode 1N4003 1A 200 PIV D10 1 DI1101 Diode Zener 10V 1/2W T/R ZD3,4,5,6 4 DI1186 Diode Zener 36V 5% 5W T/R ZD1 1 DI1187 Diode Bridge Powr 400V/8AD18 1 IC1215 IC TL064CN Quad OP AMPU1,2 2 IC1216 IC TL062CP Dual OP Amp. U3 1 IC1045 Three-Term. Adj. Pos. V R LM317TU4 1

27、 604-L469EGW LED Green/Red Common Cath 1 TR1002 Transistor NPN TO-92 2N3904 Q1,5,7 3 TR1017 Transistor PNP T/R 2N3906 Q2,3,6,8 4 TR1257 MOSFET Power IRFS250 Q13,14,15,16 4 TR1259 Transistor NPN BF469 Q4,9,12 3 TR1260 Transistor PNP BF470 Q10 1 TR1304 Transistor NPN 60V/3A 25W 2SD2012 Q11 1 Resistors

28、 RS1036RES M/F 36 ohm 5% 1/4WR741 RS1058RES M/F 51.1Kohm 1% 1/4WR631 RS1063RES M/F 1 Mohm 1% 1/4WR391 RS1150RES M/F 43.2Kohm 1% 1/4WR561 RS1153RES M/F 47.5Kohm 1% 1/4WR291 RS1268RES M/F 2.21Kohm 1% 1/4WR801 RS1342RES M/F 9.09Kohm 1% 1/4WR521 Overture 3 22 RS1351RES M/F 13Kohm 1% 1/4WR9,10,20,484 RS1

29、353RES M/F 3.01Kohm 1% 1/4WR50,51,573 RS1355RES M/F 4.75Kohm 1% 1/4WR61 RS1357RES M/F 100 ohm 1% 1/4WR541 RS1370RES M/F 3.57Kohm 1% 1/4WR241 RS1455RES M/F 150Kohm 1% 1/4WR35,36,493 RS1492RES M/F 221Kohm 1% 1/4WR301 RS1505RES M/F 475Kohm 1% 1/4WR371 RS1562RES M/F 82.5Kohm 1% 1/4WR471 RS1585RES M/F 47

30、5 ohm 1% 1/4WR51 RS2018RES M/F 10Kohm 1% 1/4WR13,18,263 RS2019RES M/F 20Kohm 1% 1/4WR2,41,58,69,70,716 RS2025RES M/F 9.31Kohm 1% 1/4WR11 RS2099RES M/F 6.98Kohm 1% 1/4WR21,222 RS2126RES M/F 69.8Kohm 1% 1/4WR71 RS2128RES M/F 6.65Kohm 1% 1/4WR81 RS2130RES M/F 432 ohm 1% 1/4WR111 RS2131RES M/F 536Kohm 1

31、% 1/4WR151 RS2133RES M/F 69.8Kohm 1% 1/4WR171 RS2136RES M/F 53.6Kohm 1% 1/4WR191 RS2139RES M/F 200 ohm 1% 1/4WR251 RS2140RES M/F 619Kohm 1% 1/4WR321 RS2141RES M/F 110Kohm 1% 1/4WR331 RS2142RES M/F 100Kohm 1% 1/4WR34,38,533 RS2143RES M/F 3.32Kohm 1% 1/4WR27,40,46,554 RS2144RES M/F 1.3Kohm 1% 1/4WR42,

32、602 RS2146RES M/F 1.5Mohm 1% 1/4WR441 RS2147RES M/F 249Kohm 1% 1/4WR451 RS2148RES M/F 130Kohm 1% 1/4WR591 RS2149RES Fuse 1Kohm 5% 1/4W TR61,62,64,66,72,73,76,788 RS2150RES Fuse 0.22ohm 5% 1/2WR65,67,77,794 RS2151RES M/O F/P 1Kohm 5% 2WR681 RS2152RES M/F 75Kohm 1% 1/4WR811 RS2153 or 146-6461Potentiom

33、eter 20Kohm 20% BASS GAIN1 RS2154Potentiometer 2Kohm BIAS ADJP21 RS2155RES C/F 33Kohm 5% 1/2WR43,43B2 RS2158RES M/F 3.3Kohm 5% 1/4WR751 RS2181RES M/F 2.21Mohm 1% 1/4WR28,312 RS2283RES M/O F/P 5.1Kohm 5% 5WR231 Miscellaneous SC1082SC 6-32x 3/4 Mach-Thr, Pa2 SC1099SC 6-32x 1/4 Mach-Thr Pan6 SC1240SC 6

34、-32x 1/2 Mach-Thr Pan4 SC1277SC 5-20 x1/2 Hi-Lo Pan Phi2 SP1086Clamp Insulator2 ST1022Standoff #6 x 5/16 Nylon2 TH1017Inrush Current LititerCL11 VA1009Varistor 200VMOV11 Electrical Parts List (120V) Part#DescriptionRef DesignationQty Overture 3 23 XX1278Cntrl Pnl Plstc 1 XX1279 or 331944-001KNOB FOR

35、 GAIN POTENTIOMETER1 XX1280Power Cord 12Ft 16AWG1 XX1284Strain Relief Black1 XX1302Logo-Led Plate 1 BR1415Plate Top 1 FH1004Fuseholder 2AG Chassis Mo1 FS1068 or 331925-001LINE FUSE 5A 2AG SLO-BLO (120V)F11 HS1145Heatsink 1 MI1155Transformer, Coupling T11 NU1050Nut 6-32x 1/4 Hexagonal K2 RE1019Relay,

36、12A,48VDCK21 Electrical Parts List (120V) Part#DescriptionRef DesignationQty Overture 3 24 Electrical Parts List (230V) Part#DescriptionQty SEMICONDUCTORS DI1186Diode Zener 36V 5% 5W T/R1 DI1224DIODE PWR RECT 800V/3A1 IC1045Three-Term. Adj. Pos. V R LM317T1 IC1215IC TL064CN Quad OP AMP2 IC1216IC TL0

37、62CP Dual OP Amp1 TR1304Transistor NPN 60V/3A 25W 2SD20121 TR1002Transistor NPN TO-92 2N39043 TR1017Transistor PNP T/R 2N39064 TR1316Xsistor ZTX658 NPN3 TR1317Xsistor ZTX758 PNP1 TR1318Pwr Mosfet STH16NA40FI2 DI1060Diode Switching 500mW 75V8 DI1003Diode Rectifier 1N40042 DI1004DIODE ZENER 6.2V 1/2W

38、T/R1 604-L469EGWLed Green/Red Common Cathode1 RESISTORS RS1058RES M/F 51.1Kohm 1% 1/4W1 RS1063RES M/F 1 Mohm 1% 1/4W1 RS1150RES M/F 43.2Kohm 1% 1/4W1 RS1153RES M/F 47.5Kohm 1% 1/4W1 RS1342RES M/F 9.09Kohm 1% 1/4W2 RS1351RES M/F 13Kohm 1% 1/4W2 RS1353RES M/F 3.01Kohm 1% 1/4W2 RS1357RES M/F 100 ohm 1%

39、 1/4W1 RS1366RES M/F 2.00Kohm 1% 1/4W1 RS1455RES M/F 150Kohm 1% 1/4W2 RS1479RES M/F 2.43Kohm 1% 1/4W1 RS1492RES M/F 221Kohm 1% 1/4W1 RS1505RES M/F 475Kohm 1% 1/4W1 RS2018RES M/F 10Kohm 1% 1/4W5 RS2019RES M/F 20Kohm 1% 1/4W2 RS2025RES M/F 9.31Kohm 1% 1/4W1 RS2099RES M/F 6.98Kohm 1% 1/4W2 RS2128RES M/

40、F 6.65Kohm 1% 1/4W1 RS2131RES M/F 536Kohm 1% 1/4W1 RS2139RES M/F 200 ohm 1% 1/4W1 RS2141RES M/F 110Kohm 1% 1/4W1 RS2142RES M/F 100Kohm 1% 1/4W3 RS2143RES M/F 3.32Kohm 1% 1/4W2 RS2144RES M/F 1.3Kohm 1% 1/4W2 RS2146RES M/F 1.5Mohm 1% 1/4W1 RS2149Res. Fuse 1Kohm 5% 1/4W T2 RS2152RES M/F 75Kohm 1% 1/4W1

41、 RS2181RES M/F 2.21Mohm 1% 1/4W2 RS2295RES M/F 511 ohm 1% 1/4W1 RS2297RES M/F 3.3Mohm 1% 1/4W1 RS2147RES M/F 249Kohm 1% 1/4W1 RS2298RES M/F 301Kohm 1% 1/4W1 RS2299RES M/F 1.4Kohm 1% 1/4W1 Overture 3 25 RS2300RES M/F 374Kohm 1% 1/4W1 RS2302RES M/F 4.42Kohm 1% 1/4W1 RS2303RES M/F 39.2Kohm 1% 1/4W3 RS2

42、304Res Fuse 2Kohm 5% 1/3W T/2 RS2305Res Fuse 75 ohm 5% 1/3W T1 RS2306Res Fuse 6.8Kohm 5% 1/3W3 RS2307RES M/F 182Kohm 1% 1/4W1 RS2396RES M/F 1.58Kohm 1% 1/4W1 RS1154RES M/F 31.6Kohm 1% 1/4W1 RS2133RES M/F 69.8Kohm 1% 1/4W2 RS2151RES M/O F/P 1Kohm 5% 2W1 RS2296RES M/O F/P 62Kohm 5% 2W2 RS2301Res Fuse

43、0.47 ohm 5% T/R2 RS2464RES W/W 20Kohm 5% 6W T/R1 RS2153 or 146-6461Potentiometer 20Kohm 20% BASS GAIN1 RS2369POTENTIOMETER 1Kohm BIAS ADJ1 CAPACITORS CP1126CAP POLY FILM 1uF 10% 50V1 CP1656Cap. Al El 100uF 20% NPE1 CP1659Cap. NPE 10uF 20% 25V T/R1 CP1661Cap. Alum El. 100uF 20% 51 CP1662Cap. Alum El.

44、 10uF 20% 355 CP1663Cap. Alum El. 47uF 20% 251 CP1664Cap. Alum EL. 4.70uF 20%1 CP1666Cap Cer Disc 68pF 20% 5002 CP1669Cap. Poly Fil 10uF 10% 41 CP1672Cap Poly 0.22uF 5% 63V T/4 CP1673Cap. Pol Fil 1nF 10% 50V1 CP1674Cap. Alum El. 1uF 20% 50V1 CP1675Cap. Pol Fil 1uF 5% 50V4 CP1676Cap. Pol Fil .022 uF

45、5%1 CP1804Cap Alum El 270uF 400V1 CP1805Cap Alum El 22uF 20% 100V1 CP1806Cap Poly Fil 0.22uF 10% 41 CP1807Cap Al El 22uF 20% 250V1 CP1828Cap Alum El 390uF 20% 2001 CP1829Cap Al El 4.7uF 20% 100V1 CP1904CAP POLY 0.022uF 20% 250V1 CP1658Cap. Disc 100pF 10% 500V3 CP1897CAP Alum El 2200uF 20% 25V1 MISCE

46、LLANEOUS RE1023Relay PC Mount1 MI1175Transformer Coupling Mode1 TE1175TERMINAL MALE TAB 0.2503 TE1187TERM MALE TAB 0.1873 TH1017Inrush Current Limiter1 VA1010Varistor 400V1 SC1057SC 4-40 x5/16 MACH-THR PAN1 SC1082SC 6-32x 3/4 Mach-Thr, Pa2 Electrical Parts List (230V) Part#DescriptionQty Overture 3

47、26 SP1092NYLON STANDOFF2 ST1022Standoff #6 x 5/16 Nylon2 WA1085WASHER #6 INTERNAL STAR2 XX1278Cntrl Pnl Plstc 971 XX1279 or 331944-001Knob for Gain Potentiometer1 XX1284Strain Relief Black1 XX1302Logo-Led Plate1 XX1340HOLE PLUG1 TE1214TERMINAL FEMALE FASTON1 WA1091WASHER SPLIT #6 ZINK FSH1 SC1000SC

48、6-32x5/16 MACH-THR PAN6 SC1277Sc 5-20 x1/2 Hi-Lo Pan Phi2 SC1219Hex.Screw 6-32x3/8,Zinc S4 BR1413PCB Mntg Plate2 BR1414Plate Bottom 971 BR1415Plate Top 97-2/31 BR1517Transistor Clamp1 NU1050Nut 6-32x 1/4 Hexagonal K2 604-L469EGWLed Green/Red Cath1 TE1050Terminal Ultra Fast Ins.1 TE1125Terminal Ultra Fast Ins.1 FS1077Line Fuse 1.6A 2AG SLO-BLO (230V)1 TE1199FEMALE POWER CORD RECEPTACLE1 Electrical Parts List (230V) Part#DescriptionQty Overture