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

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1、 ENTRA SUB TWO POWERED SUBWOOFER SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 1 4/2003 Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 TABLE OF CONTENTS SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 . .2 DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 CONTROLS and CONNECTIONS . . . . . . . . . . . . . . . . . . . . . .5 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 MECHANICAL/PACKAGING PARTS LIST . . . . . . . . . . . . . . . . . . . . .8

3、 EXPLODED VIEW/SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . .9 TEST PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . .10 TECH TIP INFTT2003-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 PCB DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . .14 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . .20 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . .24 SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Do

5、wnloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库5ENTRA SUB TWOEntra Sub TwoFrequency Response:28Hz 150Hz (3dB)Maximum Amplifier Output:250 watts RMS(20Hz 150Hz 500 watts peakwith no more than 0.1% THD)Crossover Frequencies:50Hz 150Hz,24dB/octave,continuously variableHigh-Pass Freque

6、ncy:150Hz(Speaker-Level Output Only) Driver:12 C.M.M.D.Dimensions (H x W x D):17 x 15-3/8 x 19-3/8 (432mm x 391mm x 492mm)Weight:47 lb (21.4kg)Infinity continually strives to update and improve existing products,as wellas create new ones.The specifications and construction details in this and relate

7、d Infinity publications are therefore subject to change without notice.SPECIFICATIONSEntra Sub Two Downloaded from www.M manuals search engine INFINITY ENTRA SUB TWO150W Powered Sub/ Plate Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotesUS 120vac/60HzYes108-132120VrmsNormal OperationEU 230vac/50-60HzYe

8、s207-264230VrmsNormal operation, MOMS requiredParameterSpecificationUnitQA Test LimitsConditionsNotesAmp SectionType (Class AB, D, other)Dn/an/aLoad Impedance (speaker)4Ohmsn/aNominalRated Output Power (120VAC150Watts135Domestic version only 120 VAC-60 HzRated Output Power (230VAC150Watts130EU Versi

9、on only 230 VAC-50 HzTHD Rated Power0.3%122K filter140 WattsTHD 1 Watt0.1%0.522K filterDC Offset10mV-DC30Amplifier outputDamping factor50DF35Measured at amplifier board Measured at the speaker cable. 150 Watts THD LP1KHzLFE input driven onlyHP speaker out connector200Hz 10Speaker input driven - 4 Oh

10、ms 100Hz 10Speaker input driven - 8 Ohms Limiter THD at Max. Output Power5 T 1M ? (NO LOAD)Resistance from V+ (C6 P+) to V- (C8 P-) gradually Fully CHARGED should read 10k ?Resistance from V+ (C6 P+) to S+ (SPK O/P) should read 1M?Resistance from V- (C8 P-) to S+ (SPK O/P) should read 1M ?2. Power U

11、pLED RED With a 5mV signal to Low level input, LED should change to GREEN -Voltage measurements (DVM)OP AMPLEDP-U4(1)P-U4(7)RED0Vrms11.84VDCGREEN7.13Vrms-12.93VDC3. D.C. Operation -Voltage measurements (DVM) on CLASS D POWER AMPBetweenV+Q4(E)Q1(C)Q10(C)U7(1)U7(2)U7(4)U7(6)U7(7)U7(8)And ThisPointGNDV

12、-GNDGNDGNDGNDGNDGNDGNDGNDGet thisReading71.7V0V-71.7V0V-71.7V-71.5V-71.2V0V0V4.65V4. Check Switching Frequency? Oscilloscope - USE THE PROBE TIP TO U6(7) TO GND? Reading 100kHz +/-10%,24Vp-pB. Pre Amp SectionLine Level Input Sensitivity -Set upTurn level, XOVER FREQ POT Fully CW and LFE switch offGe

13、nerator Set at 200mV50HzSignal to Line level inputEntra Sub Two Downloaded from www.M manuals search engine - Voltage measurementsOP AMPU2(1)U2(14)U2(8)U3(7)U3(1)U3(14)U3(8)U5(7)U5(1)SPEAKERO/P306.9mV461mV460mV658mV628mV598mV2.326V2.02V3.57V23.33V2. High Level Input Sensitivity -Set upTurn level, XO

14、VER FREQ POT Fully CW and LFE switch off Set Generator at 1.3V50HzSignal to High level input -Voltage measurements 15.3V at speaker output3. Low-Pass -Set upSet Generator at 200 mV100HzSignal to Line level inputMeasure voltage at S+ speaker output -Voltage measurementXOVER FREQ. SettingOutputCW14.03

15、VCCW4.8V4. LFE -Set upSet Generator at 200mV200HzSignal to Line level inputMeasure voltage at S+ speaker outputLFE switch SettingOutputNormal6VLFE18.32VSee flow chart next page for diagnostics.Entra Sub Two Downloaded from www.M manuals search engine ENTRA SUB II POWER MODULE TESTING FLOW CHARTCAUTI

16、ON : SPEAKER OUTPUT IS FLOATING AND IS NOT PROTECTED AGAINST A SHORT TO GROUND. ALL TEST INSTRUMENTS CONNECTED TO THE OUTPUT MUST BE FLOATING. ATTACH THE SCOPE PROBE TIP TO S - and REFERENCE LEAD TO S+. (A 10mV signal may need from the input to trigger the Switch turn on) no no yes yes no no yes yes

17、 no no yes yes no no yes yesSTARTCheck +/-15V-MOD+/-15V voltage atU 6(8),U6(4)Discharge C37,Check fusetransformer, L4,rectifier, C6 and C8Use scope to checkswitchingfrequency U6(7)100KHz +/-10% , 24Vp-pCheck Q4(E)TO V- = 0V D.C.Power up with nosignal inputLED REDOKOKOKOKOKOKOKOKCheckMUTE(+8V) andQ24

18、,Q25,Q26Use scope tocheck O/P U7(6)and GND143Vp-p squarewave shownCheckL2,L3,C71,C72,C73,C74I/P:10mv/50HZCheck +15V/SWQ4(E) TO V- =15VReplaceQ18,Q22CLASS D AMP OKENDCheckU7,Q16,Q17,Q20,Q21,R87,D26,D35,C64CheckFB1,FB2,C45,C50,C60,C63,R81,R82CheckU7(1) = -58.3VCheckMUTE(-12.9V),AndQ24,Q25,Q26Resistanc

19、e check(no load)between V+ V-,V+ O/P,V- O/Pand O/P to GNDis 10KEntra Sub Two Downloaded from www.M manuals search engine 13 TECH TIPSTECH TIPS Troubleshooting tips and solutions to common service problems For model: Entra Sub Two TIP# INFTT2003-02 Subject: Replacing MOSFETS Q18, Q22 In the event you

20、 need to replace MOSFET transistors Q18 or Q22 as part of a repair, it is important to use ONLY the Infinity part# FE106401110 or only the brands: International Rectifier, or Fairchild. Replace both Q18 and Q22 MOSFETs in the circuit, even if only one seems to be damaged. Do NOT mix & match these co

21、mponents from different manufacturers, or batches. They should be identical Downloaded from www.M manuals search engine Entra Sub Two Downloaded from www.M manuals search engine Entra Sub Two Downloaded from www.M manuals search engine Entra Sub Two Downloaded from www.M manuals search engine Entra

22、Sub Two Downloaded from www.M manuals search engine Entra Sub Two Downloaded from www.M manuals search engine Entra Sub Two Entra Sub Two Downloaded from www.M manuals search engine Entra Sub Two Entra Sub Two Entra Sub Two Entra Sub Two Downloaded from www.M manuals search engine ENTRA II SUB Elect

23、rical Parts ListPart NumberDescriptionQtyReference DesignatorResistors020-220497-120Film Resistor2K2 1/4W J TAPING1R11021-100401-120MOF Resistor1K 1W J KINK MO-1001R103021-220202-120MOF22R 2W(S) J MB TYPE 15x81R10021-240405-020MOF Resistor2K4/5WS J 17x6 KINK4R6,9,R7A,R9A022-500003-020KNP Resistor0R0

24、5 3WS J FK TYPE1R104024-000098-120SMD Resistor0R 1/8W J 0805 TAPING1R68024-100298-120SMD Resistor10R 1/8W J 0805 TAPING2R81,82024-100398-120SMD Resistor100R 1/8W J 0805 TAPING1R62024-100498-120SMD Resistor1K 1/8W J 0805 TAPING9R79,83,92,95,96,105,108,5A,65024-100598-120SMD Resistor10K 1/8W J 0805 TA

25、PING10R2,17,19,20,21,37,54,58,63,71,024-100698-120SMD Resistor100K 1/8W J 0805 TAPING6R3,22-25,112024-105598-100SMD Resistor10K5 1/8W F 0805 TAPING1R35A024-110598-100SMD Resistor11K 1/8W F 0805 TAPING1R98024-124598-100SMD Resistor12K4 1/8W F 0805 TAPING1R41024-130598-120SMD Resistor13K 1/8W J 0805 T

26、APING2R42,43024-133698-100SMD Resistor133K 1/8W F 0805 TAPING1R45024-137398-100SMD Resistor137R 1/8W F 0805 TAPING1R6A024-137698-100SMD Resistor137K 1/8W F 0805 TAPING1R32024-150498-120SMD Resistor1K5 1/8W J 0805 TAPING1R67024-150598-100SMD Resistor15K 1/8W F 0805 TAPING2R132,133024-160598-100SMD Re

27、sistor16K 1/8W F 0805 TAPING4R125,126,135,136024-160798-120SMD Resistor1M6 1/8W J 0805 TAPING1R121024-180598-100SMD Resistor18K 1/8W 1% 0805 TAPING1R29024-196598-100SMD Resistor19K6 1/8W F 0805 TAPING1R40024-200598-120SMD Resistor20K 1/8W J 0805 TAPING1R94024-220398-120SMD Resistor220R 1/8W J 0805 T

28、APING1R90024-220498-121SMD Resistor2K2 1/8W J 0805 TAPING3R1,87,61024-220598-120SMD Resistor22K 1/8W J 0805 TAPING1R118024-220798-120SMD Resistor2M2 1/8W J 0805 TAPING1R80024-237598-120SMD Resistor23K7 1/8W F 0805 TAPING1R48024-270498-120SMD Resistor2K7 1/8W J 0805 TAPING2R73,64024-300398-120SMD Res

29、istor300R 1/8W J 0805 TAPING1R55024-300598-120SMD Resistor30K 1/8W J 0805 TAPING1R56024-316498-100SMD Resistor3K16 1/8W F 0805 TAPING1R38024-330498-120SMD Resistor3K3 1/8W J 0805 TAPING11R7,8,26,27,12-15,59,28,78024-330598-120SMD Resistor33K 1/8W J 0805 TAPING3R4,5,131024-390498-120SMD Resistor3K9 1

30、/8W J 0805 TAPING1R93024-390598-120SMD Resistor39K 1/8W J 0805 TAPING1R77024-402598-100SMD Resistor40K2 1/8W F 0805 TAPING1R39024-453598-100SMD Resistor45K3 1/8W F 0805 TAPING1R30024-470298-120SMD Resistor47R 1/8W J 0805 TAPING2R101,102024-470398-120SMD Resistor470R 1/8W J 0805 TAPING3R76,99,100024-

31、470498-120SMD Resistor4K7 1/8W J 0805 TAPING3R85,86,128024-470598-120SMD Resistor47K 1/8W J 0805 TAPING4R44,47,49,107024-470698-120SMD Resistor470K 1/8W J 0805 TAPING3R70,129,130024-470798-120SMD Resistor4.7M 1/8W J 0805 TAPING1R60024-487498-100SMD Resistor4K87 1/8W F 0805 TAPING2R51,53024-510398-12

32、0SMD Resistor510R 1/8W J 0805 TAPING1R57024-560598-120SMD Resistor56K 1/8W J 0805 TAPING1R122024-620398-100SMD Resistor620R 1/8W F 0805 TAPING2R16,18024-620598-120SMD Resistor62K 1/8W J 0805 TAPING1R4A024-680498-120SMD Resistor6.8K 1/8W J 0805 TAPING2R46,91024-680598-120SMD Resistor68K 1/8W J 0805 T

33、APING6R33,34A,31,50,52,66024-732498-100SMD Resistor7K32 1/8W F 0805 TAPING1R36024-820598-120SMD Resistor82K 1/8W J 0805 TAPING1R69024-910398-100SMD Resistor910R 1/8W F 0805 TPAING1R110024-976398-100SMD Resistor976R 1/8W F 0805 TAPING1R2A026-200595-269VRPN:RD163121R03D-20KBx2(EJ)1VR2Entra Sub Two Dow

34、nloaded from www.M manuals search engine Part NumberDescriptionQtyReference Designator026-500495-252VR 5KAPN:RK163111R52B-5KA (EJ)1VR1Capacitors031-100244-100Ceramic0u01/50V K 0805 X7R TAPING7C33,45,51,66,67,5,10031-100343-100SMD Capacitor100pF/50V J 0805 NPO TAPING3C16,36,58031-100344-100SMD Capaci

35、tor0u1/50V K 0805 X7R TAPING12C11,42-44,46-49,52,54,55,60031-100384-100RSMD Capacitor0u1/250V K 1206 X7R TAPING2C3,7031-220344-100SMD Capacitor220pF/50V J 0805 NPO TAPING5C14,15,20,21,19031-330444-300SMD Capacitor3300pF/50V K 0805 X7R TAPING2C40,34031-470244-102SMD Capacitor0u047/50V K 0805 X7R TAPI

36、NG2C62,59031-560243-100SMD Capacitor56pF/50V J 0805 NPO TAPING2C57,61031-560343-102SMD Capacitor560pF/50V J 0805 NPO TAPING1C56032-100484-200END PP Capacitor1uF/250V K P:15mm2C70,C70B032-270343-301MP Capacitor0u27/63V J P:5 TAPING1C29033-200645-300NP Capacitor200u/50V M (R)1321 P:52C17,18033-470464-

37、270NPE Capacitor4u7/100V K10 (R)1015 GNE1C73033-680464-270NPE Capacitor6u8/100V K10 (R)1020 GNE1C72034-100525-300Electrolytic Capacitor10uF/25V M (R)0511 P:5 TAPING1C35034-100625-300Electrolytic Capacitor100uF/25V M (R)6.3x11 P:51C64034-220525-301Electrolytic Capacitor22uF/25V M (R)5x11 P:5 TAPING5C

38、4,9,41,50,53034-220615-301Electrolytic Capacitor220uF/16V M (R)0611 P:51C37034-330515-000Electrolytic Capacitor33uF/16V M (R)0511 P:5 TAPING1C39034-330525-300Electrolytic Capacitor33uF/25V M (R)0511 P:51C1034-330615-300Electrolytic Capacitor330uF/16V M (R)0812 P:52C12,78034-330780-300Electrolytic Ca

39、pacitor3300uF/80V M (R) 22*48 SNAPIN2C6,8034-470415-301Electrolytic Capacitor4u7/50V M (R)0511 P:5 TAPING1C2034-470615-301Electrolytic Capacitor470uF/16V M (R)0812 P:5 TAPING1C65035-180354-300PE Capacitor0u18/63V J P=5 P/N:ESK063P18JA1C1A035-330293-300ESK Capacitor0u033/63V J P:5 TAPING1C28035-47024

40、4-100PE Capacitor0u047/63V K P:5m/m TAPING1C30035-470353-301ESKCapacitor0u47/63V J P:5m/m TAPING2C25,26035-680253-300PE Capacitor0u068/63V J P:5m/m TAPING2C2A,C27038-100363-300MPE Capacitor0u1/100V J TAPING2C68,69038-330393-300MPE Capacitor0u33/63V J TAPING1C31039-100390-100UL Safety Capacitor0u1/27

41、5V PN:XG275M104VSL71CXAC1Semiconductors051-000600-100NPN TransistorMPSW06RLRA TO-92 TAPING2Q2,Q16051-003100-000TransistorTIP 31C TO-2201Q4051-005600-100NPN TransistorMPSW56RLRA MPQ TO-92 TAPING1Q3051-222200-100NPN TransistorPN:MPS2222ARLRA TO-92 TAPING1Q21051-290700-100PNP TransistorPN:P2N2907A TO-9

42、2 TAPING2Q19,23051-540101-000PNP TransistorPN:2N5401 TO-92 TAPING1Q1051-555100-000NPN TransistorPN:2N5551 TO-92 TAPING1Q17051-640001-000MOSFET N-ChannelPN:IRF640N TO-220 (IR)2Q18,22052-400080-000Rectifier400V,8A,PN:RS8041BR1053-211100-000IC;DIP,DRIVERPN:IR2111 8PIN (IR)1U7054-000100-100SMD DIODEPN:E

43、S1D 200V 1A TAPING5D5,26,29,33,38054-001002-100SMD ZENER DIODEPN:BZX84C10 10V SOT-23 TAPING1D35054-001501-100SMD ZENER DIODEPN:BZX84C15 15V SOT-23 TAPING3D6,7,9054-007200-100SMD ICPN:TL072CDR SO-8 TAPING (TI)3U5,6,1054-007400-100SMD IC;(OP-Amp)PN:TL074CDR TAPING (TI)2U2,3054-033904-100SMD Transistor

44、PN:MMBT3904LT1 SOT23 TAPING7Q11,14,13,5,8,25,9054-033906-100SMD TransistorPN:MMBT3906LT1 SOT23 TAPING4Q6,10,12,15054-045580-100SMD IC;(OP-Amp)PN:NJM4558M-TE3 DMP-8 TAPING1U4054-050601-100SMD ZENER DIODEPN:BZX84C5V6 5.6V SOT-23 TAPIN3D24,36,37054-211400-100SMD Transistor (NPN)PN:DTC114EK SMT3 TAPING

45、(ROHM 1Q7054-414803-100SMD DIODEPN:LL4148 TAPING (Wishay)12D1-4,8,27,28,30-32,34,39,054-540100-100SMD Transistor (PNP)PN:MMBT5401 LT1 SOT-23 TAPING3Q20,24,26Entra Sub Two Downloaded from www.M manuals search engine Part NumberDescriptionQtyReference DesignatorMiscellaneous025-010300-000Thermo Switch

46、TSE-103 K L:50mm1TH1041-115001-000BEAD COILYT-109111L5042-010053-003XfmrYT-10616-41043-300101-000INDUCTOR30uH YT-100331L2043-324300-000INDUCTOR324uH YT-107781L4043-560200-000INDUCTOR56uH YT-107791L1043-700101-000TOROIDAL INDUCTOR70uH YT-106821L3044-100100-000SMD FERRITE BEADPN:321611 600R/100MHz 120

47、62FB1,FB2050-505200-001LEDPN:LT-2402-211061-020000-000Knob20 x15m/m UL94V-0 BLK1061-314002-000Strain ReliefP/N SB4F-21061-400014-000RUBBER FOOTID:6.2 OD:11.5 t=2mm BLK1061-700044-000Mica13x18mm TO-220 No Hole1063-010012-000BracketP/N:TRK-11063-321101-000Panel322x105.7x15mm BLK ABS-94V01063-531808-00

48、0Bucket322x105.7x146.5mm BLK (94VO)1072-010007-000RCA HousingSCJ-1020 2P(G) WHT,RED1CONN1072-060170-000B.P.B.P.2BP/IP,BP/OP073-032088-600Heatsink58x32x70mm1073-050001-000FUSE CLIPP/N:CFFH12061074-020018-000Rocker SwitchRF1003-BB4-01074-030002-000TOGGLE SWP/N L1012SW5,SW6074-300018-000RELAYPN:943-1C-

49、48D1K1093-105202-300FUSE:UL GSL(2AG)FUSE:2A,250V,5*20mm1F1Entra Sub Two Downloaded from www.M manuals search engine 24Integrated Circuit Diagrams OPAMP, QUADTL074CDRU2, 3OPAMP, DUALTL072CDR SO-8, NJM4558M-TE3U1, 4-6IR2111 HALF-BRIDGE DRIVERU72Base3 Collector1 Emitter1232N2907A, 2N5401Q1, 19, 232Base

50、3 Collector1 Emitter123MPSW06RLRA, MPSW56RLRAMPQ, MPS2222ARLRA, 2N5551 Q2, 16, 3, 21, 19, 23, 17MOSFET IRF640 Q18, 22TIP31C Q4MMBT3904LTI SOT23, MMBT3906LTI SOT23, DTC114EK SMT3, MMBT5401 LTI, MMBT5551 LTI Q11, 14, 13, 5, 8, 9, 6, 10, 12, 15, 7, 20, 24, 26, 25BEVEL1. G2. D3. S123BCEEntra Sub Two Dow