Infinity-ExtraPointFive-sub-sm 维修电路原理图.pdf

ENTRAENTRA POINT FIVE HTSPOWERED SUBWOOFERSERVICE MANUALInfinity Systems, Inc.250 Crossways Park Dr. Woodbury, New York 11797 Rev 2 12/2002RadioFans.CN 收音机爱 好者资料库TABLE OF CONTENTSSPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . .4CONTROLS and CONNECTIONS . . . . . . . . . . . . . . . . . . . .5OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7MECHANICAL/PACKAGING PARTS LIST . . . . . . . . . . . . . .8EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . .9PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . .10TEST SETUP AND PROCEDURES . . . . . . . . . . . . . . . . . . .11ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . .12INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . .17BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19PCB DRAWINGS. . . . . . . . . . . . . . . . . . . . . . .20SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23RadioFans.CN 收音机爱 好者资料库2Entra Subwoofer3SpecificationsFrequency Response: 34Hz- 150Hz (3dB)Maximum Amplifier Power150 watts*, RMS, 500 watts peak,(20Hz - 150Hz with no more than 0.1%THD)Crossover Frequencies:50Hz - 150Hz, 24dB/octave,continuously variableDriver:10” (245mm) C.M.M.D. shieldedDCR = 3.3 ohms 10%Dimensions (H x W x D):15 x 14-1/2 x 17(381mm x 368mm x 432mm)Weight:47 lb (21.4kg) EachInfinity continually strives to update and improve existing products, as well as create new ones. Thespecifications and construction details in this and related Infinity publications are therefore subject tochange without notice.Detailed SpecificationsEntra Subwoofer4Entra Subwoofer5Controls and ConnectionsEntra Subwoofer6Controls and Connections (Cont.)Entra Subwoofer7OperationEntra Subwoofer8MECHANICAL PARTS LIST1SCREW, (16), #8 x .75, BLK, PB TRPH336806-001AMPLIFIERNOT FOR SALE2WOOFER, 10” (254mm)C.M.M.D.SHIELDED DCR = 3.3 ohms 10%336649-0013GRILLE CUP (6)333249-0014SCREW, (6), #6 x .75, BLK, PB PPH903401-0125GRILLE336454-0016FRONT BAFFLE336452-0017FOOT (4)330163-0018PORT TUBE336806-001PACKAGING9OWNERS MANUAL336422-00210WARRANTY CARD335841-00111SURVEY CARD335868-00212PAD, TOP, END (2)336457-00113CARTON336458-001Mechanical/Packaging Parts ListEntra Subwoofer91AMPLIFIER(NOT FOR SALE)PRE AMPPCB ASSEMBLYMAIN AMPASSEMBLYPOWER SUPPLYPCB ASSEMBLY213456178INFINITYENTRA SUBWOOFERCABINET(NOT FOR SALE)00470TO SERVICE THE ENTRA SUBWOOFER1) Remove the grille.2) Extract (6) rubber grille retainers as shown in the illustration above; this can be accomplished by carefully pulling them out of the cavities with long-nosed pliers or similar tool.3) Remove the (6) Phllips screws that are now exposed.4) Remove the front baffle.5) Remove the (6) screws that secure the driver.6) To service the amplifier, remove the (10) Phillips screws at the rear of the enclosure, and pull the amplifier out of the back. Remove the two Phillips screws as indicated in VIEW A to remove the rear cover.VIEW AREMOVE THESE SCREWSINFINITY SYSTEMS INC. NORTHRIDGE, CA, USADIRECTDIRECT INPUT BYPASSES FILTERWARNI NG: TO REDUCE THE RI SK OF F I RE OR EL ECT RI C SHOCK, DONOT EXPOSE THI S APPL I ANCE T O RAI N OR MOI ST URE.AT TENT I ON: POUR VI T ER T OUT RI SQUE DE FEU OU CHOCL ECTRI QUE, NE PAS EXPOSER CET APPAREI L L A PL UI E OU L HUMI DI T.AMPLIFIER MADE IN CHINARSERIAL NO.SPEAKER LEVELINPUT_+RL_+R+_OUTPUTL_+LEVELLINEINPUTWARNI NG: SHOCK HAZ ARD-DO NOT OPENNO USER SERVI CEABL E PART S I NSI DEAVI S: RI SQUE DE CHOC L ECT RI QUE-NE PAS OUVRI R120V 60Hz 3AOFFPOWERONFREQUENCYCROSSOVERMAXMIN18006050LEVELPHASE80150120RExploded ViewEntra Subwoofer10Packaging9101112121300472Entra Subwoofer11SYSTEM AURAL SWEEP TESTEquipment needed: Function/signal generator/sweep generator Integrated Amplifier Multimeter Speaker cablesGeneral Unit Function (UUT = Unit Under Test)Switches/knobs on the amplifier faceplate:Crossover Frequency adjust full CW (150Hz)Phase switch either position1.From the signal generator, Connect single line level input (RCA) cable to “Line Level Input” jack on UUT. 2.Turn the LEVEL control full counterclockwise (Min).3.Turn on generator, adjust to 400mV, 30 Hz.4.Plug in UUT; turn the power switch ON. Turn LEVEL control full clockwise (Max)5.LED should now be Green; immediate bass response should be heard and felt from rear port tubeopening.6.Turn off generator, turn LEVEL control fully counterclockwise (Min), disconnect RCA cable.7.Connect two pairs of speaker cables to Speaker Level input terminal on UUT. Cables should be connectedto an integrated amplifier fed by the signal generator. Observe polarity.8.Turn on generator and adjust so that speaker level input at the amplifier is 6.0V, 30 Hz. Turn LEVELcontrol full clockwise (Max)9.Green LED should light, immediate bass response should be heard and felt from the port tube opening.Sweep Function1.Follow steps 7-10 above, using a sweep generator as a signal source.2.Sweep generator from 20Hz to 20kHz. Listen to the cabinet and drivers for any rattles, clicks, buzzes orany other noises. If any unusual noises are heard, remove woofer and test.Driver Function (Woofer)1.Remove woofer from cabinet; detach + and - wire clips. See page 9 for removal instructions.2.Check DC resistance of woofer; it should be 3.3 ohms10%.3.Connect a pair of speaker cables to driver terminals. Cables should be connected to an integratedamplifier 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.Test Setup and ProcedureSIGNALGENERATORAMPLIFIERAC VOLTMETER (10V)ENTRA SUBUNDER TESTOUTPUT FROM GENERATOR/AMPLIFIERAMPLIFIER MADE IN CHINAINFINITY SYSTEMS INC. NORTHRIDGE, CA, USARWARNING: SHOCK HAZARD-DO NOT OPENNO USER SERVICEABLE PARTS INSIDEAVIS: RISQUE DE CHOC LECTRIQUE-NE PAS OUVRIRWARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DONOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.ATTENTION: POUR VITER TOUT RISQUE DE FEU OU CHOCLECTRIQUE, NE PAS EXPOSER CET APPAREIL LA PLUIE OU L HUMIDIT.SERIAL NO.OFFON120V 60Hz 3APOWERR+_+_LOUTPUTINPUTDIRECT INPUT BYPASSES FILTERLEVEL00473RDIRECT+_MIN+INPUTLINELEVEL_L120CROSSOVER8060180MAX050150PHASEFREQUENCYRSPEAKER LEVELEntra Subwoofer12Electrical Parts ListPart DescriptionDesignatorQuantityNo.PRE AMP PCB ASSEMBLYResistors020-100498-120 CARBON FILM RESISTOR 1K 1/8W J R107,123,138 3020-100598-120 CARBON FILM RESISTOR 10K 1/8W J R136,127,121,6135,124,125020-100698-120 CARBON FILM RESISTOR 100K 1/8W J R1331020-110598-120 CARBON FILM RESISTOR 11K 1/8W J R1221020-150598-120 CARBON FILM RESISTOR 15K 1/8W J R1181020-180698-120 CARBON FILM RESISTOR 180K 1/8W J R1281020-220698-120 CARBON FILM RESISTOR 220K 1/8W J R126,1292 020-330498-120 CARBON FILM RESISTOR 3K3 1/8W J R132,1342020-750498-120 CARBON FILM RESISTOR 7K5 1/8W J R110,1122021-100401-120 M.O.F. RESISTOR 1K 1W J MO-100R101,1022 021-100598-100METAL FILM RESISTOR 10K 1/8W F R1091021-154598-100METAL FILM RESISTOR 15K4 1/8W F (MF)R1371021-169598-100METAL FILM RESISTOR 16K9 1/8W F (MF) R1201021-200698-100METAL FILM RESISTOR 200K 1/8W F R103,104,105,1064021-215598-100METAL FILM RESISTOR 21K5 1/8W F (MF) R1111021-280498-100METAL FILM RESISTOR 2K8 1/8W F R130 1021-442598-100METAL FILM RESISTOR 44K2 1/8W F R131 1021-511498-100METAL FILM RESISTOR 5K11 1/8W F R116,117 2Capacitors030-100247-300CERAMIC CAPACITOR 0u1/50V Z P:5 C110,109,121,122,6118,119030-220223-300CERAMIC CAPACITOR 220P/50V K P:5 C105,106,1073032-100243-301PE CAPACITOR 0u1/63V J P:5m/m C1141032-220353-300PE CAPACITOR 0u22/63V J P:5m/m C104,1082032-470353-303PE CAPACITOR 0u47/63V J P:5m/m C113,125,1233034-100525-300ELEC. CAPACITOR 10uF/25V M (R) P:5C102,103,1203 034-100614-300ELEC. CAPACITOR 100uF/16V M (R)2.5 C127,1282034-100715-200ELEC. CAPACITOR PC 1000uF/16V M (R)P:5C1241034-220515-300 ELEC. CAPACITOR PC 22uF/16V M (R) P:5 C1111Semiconductors050-414802-100DIODE 1N4148D101,102,103,5104,109050-505200-000LED P/N:UDC-5052W LEDD1101051-101501-000TRANSISTOR PNP 2SA1015GR TO-92Q102,1032051-181502-000TRANSISTOR NPN 2SC1815GR TO-92 Q1011053-007200-000IC TL072 CP DIP DUAL OP-AMPIC1021053-007400-000IC TL074CN QUAD OP-AMPIC1011053-455801-000I.C PC BA4558 (ROHM) DUAL OP-AMPIC1031Entra Subwoofer13Electrical Parts ListPart DescriptionDesignatorQuantityNo.Miscellaneous072-010058-000RCA JACK 2P P/N:052000W1G(Red,White)JK1011074-030002-000TOGGLE SW P/N L101SW1011083-031605-000CONNECTOR LEAD WIRE #26 L:60mm #18 L:70mmCN11083-052618-000CONNECTOR LEAD WIRE EH2.5-7P+SCN2.5P+7CN1011LEAD WIRE026-200595-263 VR P/N:R1210G-2A1-B20Kx2 10% VR101 1026-200595-264 VR P/N:R1210N-2A1-B20K 10% VR102 1MAIN AMP ASSEMBLYResistors020-100398-120CARBON RESISTOR 100R 1/8W JR511,714,7193 020-100498-120CARBON RESISTOR 1K 1/8W JR506,721,507,7024 020-100598-120CARBON RESISTOR 10K 1/8W JR503,610,504,510,7512,601,606020-100698-120CARBON RESISTOR 100K 1/8W JR712,725,7313020-150498-120CARBON RESISTOR 1K5 1/8W JR713,718,7213020-150598-120CARBON RESISTOR 15K 1/8W JR607,709,7113020-220498-120CARBON RESISTOR 2K2 1/8W JR710,7422020-220598-120CARBON RESISTOR 22K 1/8W JR502,508,701,7034020-220698-120CARBON RESISTOR 220K 1/8W JR6031020-270398-120CARBON RESISTOR 270R 1/8W JR715,7172020-270698-120CARBON RESISTOR 270K 1/8W JR6111020-330297-120CARBON RESISTOR 33R 1/4W JR723,7242020-390598-120CARBON RESISTOR 6 39K 1/8W JR7161020-470498-120CARBON RESISTOR 4K7 1/8W JR6021021-470597-120M.O.F. RESISTOR 47K 1/4W JR7281 020-470598-120CARBON RESISTOR 47K 1/8W JR505,604,6053020-560398-120CARBON RESISTOR 560R 1/8W JR7431021-100003-020M. O. F. RESISTOR 0R1 3WS JR734,7352021-100201-121M. O. F. RESISTOR 10R 1W J MOR608,6092021-100397-120M. O. F. RESISTOR 100R 1/4W JR726,7302021-100401-120M. O. F. RESISTOR 1K 1W JR7391021-100496-120M. O. F. RESISTOR 1K 1/2WR727,7292021-330498-120M. O. F. RESISTOR 3K3 1/8W JR7201021-499698-100METAL FILM RESISTOR 499K 1/8W FR513,5092021-680296-120M. O. F. RESISTOR 68R 1/2W JR732,7332Capacitors030-100264-300CERAMIC CAPACITOR 0u1/100V K NPOC718,707,708,7194030-220223-300CERAMIC CAPACITOR 220P/50V K P:5C703,702,717,716 4030-220244-261CERAMIC CAPACITOR 22pF/50V J NPOC712,7132030-470344-200CERAMIC CAPACITOR PC 470pF/50V 10C715,714,711,7104Entra Subwoofer14Electrical Parts List (Cont.)Part DescriptionDesignatorQuantityNo.032-100393-300PE CAPACITOR 0u1/63V J P:5C606,607,601,7094034-100515-301ELEC. CAPACITOR PC 10uF/16V M (R)0511C701,7232034-100615-301ELEC. CAPACITOR 100uF/16V M (R)0611C6051034-100695-300ELEC. CAPACITOR 100uF/63V M (R)1012C720,7212034-470415-300ELEC. CAPACITOR 4u7/50V M (R)0511 P:C501,6032034-470515-000ELEC. CAPACITOR 47uF/16V M (R)0511C502,604,7043035-220143-100PE CAPACITOR FE-M 0u0022/63V J P:5m/mC6081035-220243-100PE CAPACITOR FE-M 0u022/63V J P:5m/mC5031Semiconductors050-003000-100ZENER DIODE 30V HZ-30-2 05000881D8071050-400201-100DIODE 1N4002 100V/1A TAPINGD710,711,601,6717, 712, 806050-414802-100DIODE 1N4148 D501,713,715,716,7714,708,709053-123700-100IC PC UPC 1237HA LIMITERIC6011053-455801-000I.C PC BA4558 (ROHM) OP-AMPIC501,7012051-003100-000TRANSISTOR TIP 31C TO-220Q7071051-003200-000TRANSISTOR TIP 32C TO-220Q7081051-046900-000TRANSISTOR 4 BF469Q7041051-047000-000TRANSISTOR BF470Q7031051-066900-000TRANSISTOR 1 2SD669A (C class)Q7111051-138600-000TRANSISTOR 2SA 1386(SANKEN) TO-3PQ7101051-181500-000TRANSISTOR PC 2SC1815GRQ501,502,602,6034051-351900-000TRANSISTOR 2SC 3519(SANKEN) TO-3PQ7091051-540100-000TRANSISTOR 2N5401Q702,706,6013051-555100-000TRANSISTOR 2N5551 TO-92Q701,7052Miscellaneous061-700011-101SLICON RUBBER PCS P/N:1877 110 x30mm t=0.19mm1072-040007-0007P WAFER SWA101 BC501 JS-1001-071072-040039-000TERMINAL (PCB) PC205 (t=0.8m/m)T205MAJ6021072-040041-000TERMINAL(PCB) T250MA (P/N 0635R-BL2)J6011072-040206-000CONNECTOR P/N:3PIN JS-1001-4 P:2.5CON8021073-014005-600BRACKET(LEFT SIDE) PCS 72x19m/m t=1mm1073-014006-600BRACKET(RIGHT SIDE) PCS 72x19m/m t=1mm1074-300004-000RELAY 48VDC P/N PCE-148D1HRLY6011083-022547-000CONNECTOR WIRE #18 VH3.96+SCN2.5CN3021025-050001-000VARISTOR TSA-104TH6011Entra Subwoofer15Electrical Parts List (Cont.)Part DescriptionDesignatorQuantityNo.POWER SUPPLY PCB ASSYResistors020-820497-120CARBON RESISTOR 8K2 1/4W JR301,3042021-470301-120 MO RESISTOR 470R 1W J MB TYPE MO-100R303,3022Capacitors030-100264-300CERAMIC CAPACITOR 0u1/100V K NPO TAPINGC2,32030-100295-201UL SAFETY CAPACITOR YS-SC103Z2 10000pF/400VC3091034-220515-300ELEC. CAPACITOR PC,308 22uF/16V M (R)0511 C3071034-220615-301ELEC.CAPACITOR 220uF/16V M (R)0611 P:5C305,3062034-470763-301 ELEC.CAPACITOR 4700uF/63V M (R) 25*40C303,3042Semiconductors050-001500-000DIODE 15V 1/2W HZ15-3ZD301,3022051-118900-100TRANSISTOR 2SD882P(TO-220)Q3011051-677000-000TRANSISTOR 2SB772 (TO-220)Q3021Miscellaneous052-602000-000RECTIFY DIODE KBU8D(SUB-100W) 8A/200VBD21072-040032-000WAFER 2 P:3.96 3P MALE VHCN301073-032027-000HEAT SINK PCS 40 x24x2.0m/m1083-021805-000LEAD WIRE #22 GND WIRE L:80mm 5TT+5TT1083-022548-000LEAD WIRE #18 UL1015 PCS T187(t0.8)+ B1811T0P-22083-031603-0004Px120mm CONNECTOR 1 LEAD WIRE #22 +5TTCN301091-000130-000FUSE HOLDER PCS P/N:CQ-203SP2093-105203-300FUSE:UL GSL(2AG) FUSE:3A,250V,5*20mmF3011MISCELLANEOUS005-009885-000GASKET 97.5x85x36cm1005-033420-000STYROFOAM 335.0 x191.0 x65.0mm40008-068701-000GASKET SM-55 GASKET 860.0 x5.0 t=2.0mm2042-010042-000TRANSFORMER P/N:PT-17391061-020000-000KNOB ABS HTS-10/20 p20 x15m/m UL94V-0 BLK2061-314002-000CORD BUSHING P/N SB4F-21061-800000-000TRANSISTOR COVER P/N:TW-12062-050400-000PUSH TERMINAL 4P JK102A,JK102B P/N E4052062-261313-000BUCKET(HI PS 94VO)304.8x177.8x124.2m/m BLK1063-062512-000PLATE 304.8x177.8 t=2.5mm (SPCC)1066-120300-900CABLE TIE PCCV-120S3070-000030-410SCREW TRANSFORMERx4,HEAT SINKx6 M4;4x10m/m BLK10070-040010-210SCREW PC TRAN.x5,TH601x1,GROND WIREx1 PMS M3x10m/m BLK7070-400010-206SCREW PCB VS BRACKETx4,BRACKET VS HEAT SINKx23x6m/m BLK6070-400010-212SCREW 3x12m/m BLK1070-400010-812SCREW RCA JACKx1 PTS-4 3x12 BLK1Entra Subwoofer16071-060031-400NUT WITH GEAR TRANS FOR MERx2 K-NUT 4p2071-100810-100FLAT WASHER PC TRANS FOR MERx4 ID=4.3 OD=9.5 t=0.8m/m4071-140031-901GEAR WASHER BACK PANEL VS GROUND WIRE M3 BLK1072-050002-000GROUND WASHER GROUND WIRE VS PANEL GND-11073-032306-600HEAT SINK ALUM. 154x125x34mm1074-020015-000ROCKER SW 125V/5A P/N:R19-33A(SPST)PIN LOCK TYPE1083-041600-004AC CORD SPT-2 #16 12 FEET+5TT DOUBLE INSULATE1Electrical Parts List (Cont.)Part DescriptionDesignatorQuantityNo.Entra Subwoofer17Integrated Circuit DiagramsEntra Subwoofer18Integrated Circuit Diagrams (Cont.)NEUTRALVOLTAGEDETECTIONOVERLOADDETECTIONFLIP-FLOPCIRCUITVcc ONMUTEAC OFFDETECTIONRELAYDRIVECIRCUITSWITCH forLATCH AUTOMATICRESET1OVERLOADDETECTIONNEUTRALVOLTAGEDETECTION25GNDSWITCH forLATCHAUTOMATICRESET3AC OFF DETECTION4687MUTINGVcc 00330PC1237HA IC601PC1237HA IC60118Entra Subwoofer19Block DiagarmF213456781327682FVARI. LPF2rd orderDIR/NORMIXERFIX LPF2rd orderAC/DCCONVERTERLEDDIRVER+15V-15V-+INPUT MAX-+CLAMPINGCIRCUITSPK.DI