Infinity-Prelude_MTS-sub-sm 维修电路原理图.pdf
PRELUDE MTSSUBWOOFERSERVICE MANUALInfinity Systems, Inc250 Crossways Park Dr.Woodbury, New York 11797REV 6 6/2007RadioFans.CN 收音机爱 好者资料库Prelude MTSCONTENTSSPECIFICATIONS .3DETAILED SPECIFICATIONS .4CONTROLS & CONNECTIONS 6OPERATION/AMPLIFIER REMOVAL .10MECHANICAL/PACKING PARTS LIST.11EXPLODED VIEW .13PACKAGING .14PRELUDE MTS ADJUST BIAS PROCEDURE.15ELECTRICAL PARTS LIST (120v).16INTEGRATED CIRCUIT DIAGRAMS .24PRINTED CIRCUIT BOARD DIAGRAMS.25SCHEMATICS.292RadioFans.CN 收音机爱 好者资料库Prelude MTS Subwoofer3Prelude MTS Subwoofer SpecificationsPrelude MTS Subwoofer4Detailed SpecificationsPrelude MTS Subwoofer5Detailed Specifications (Cont.)Prelude MTS Subwoofer6Prelude MTS Subwoofer7Prelude MTS Subwoofer8Prelude MTS Subwoofer9Prelude MTS Subwoofer10OperationAmplifier RemovalMechanical & Packaging Parts ListMechanical & Packaging Parts List1CabinetPrelude MTS Subwoofer (Not for Sale)2Low Frequency Transducer(Woofer)12” Cast frame C.M.M.D., ShieldedDC Resistance 7.6 ohms ?10%335036-0013Complete Subwoofer Amp assemblyNot For Sale4Woofer Grille retainers (4)66815-015Woofer gasket335481-0016Woofer Grille335037-0017 Cosmetic Cap Logo 335351-0018Woofer Trim Ring335040-0019Front Foot335038-00110Rear Foot335244-00111Terminal Connector Plate335379-00112Cosmetic Cap335256-00113Cosmetic Cap Gasket335360-00114Cosmetic Cap Grille retainers (3)333249-00115Binding Post, BLK, Tower Conn.335358-00116Binding Post, RED, Tower Conn.335358-00217Binding Post, BLK, Rear PanelJC015118Binding Post, RED, Rear panelJC015019Subwoofer Outer Carton335059-00120Subwoofer Top End Pad335058-00121Subwoofer Bottom End Pad335058-00222System Owners manual335060-00523Warranty Card335841-00124Survey Card335868-00225Power CordWI004326Double-ended Banana Plug335357-00127Hardware Kit335849-00128Alignment Pins (2)335348-00129Spike foot set331360-00130T-Handle Allen Key335851-00131RABOS Complete kit335852-00132RABOS Test CD335855-00133RABOS Sound Level Meter335368-00134RABOS Key (Screwdriver)091-00121-00035RABOS Q-Finder335856-00136RABOS Pouch335853-0019 Volt BatteryPrelude MTS Subwoofer11Mechanical & Packaging Parts List (Contd)38Connector Plate335249-00139Connector Plate Gasket335355-002S1Screw (4)PPH #10-32 x 1 BLK900401-016S2Screw (4)PPH #10-32 x .75 BLK900401-012S3Screw (8)PB FPH #10 x .625 BLK908401-010S4Screw (2)PB FPH #10 x .75 BLK908401-012S5Screw (8)PB FPH #6 x .5 BLK903901-008S6Screw (2)MS PPH #10-32 x .625 BLK900401-010S7Screw (7)PPH #8 x .75 BLK900101-01212Prelude MTS SubwooferPrelude MTS Subwoofer14PackagingPRELUDE MTS ADJUST BIAS PROCEDURE(Mandatory when any output MOSFET transistors Q305,310,320,321,306,307,311,312 are replaced)1. Amplifier should be unplugged and OFF.2. Remove Amp assembly from cabinet, following the instructions on Page 10.3. Identify the Linear board assembly (PCB with the output transistors)4. Adjust RP301 and RP302 fully Counter Clockwise. See diagram below.5. Apply 120 VAC power to unit; turn power switch ON.6. Verify LED illuminates on the front gain control dial, unless you have disconnected the plug.7. Connect voltmeter set to DC millivolt range to twin pins on terminal J303, on Linear board.8. Verify initial voltage is less then 0.1 mV.9. Adjust RP301 Clockwise until voltmeter reads 0.3 mV + the initial current from step #8.10. Adjust RP302 Clockwise until voltmeter now reads 0.6 mV + the initial current from step #8.11. Turn amplifier OFF. Disconnect AC power to unit.12. Remove voltmeter from terminal J303.13. Replace amp assembly back into cabinet.15Prelude MTS Subwoofer16Prelude Amp Assembly Parts ListPart#DescriptionQtyDesignatorPrelude MTS Subwoofer17Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignatorPrelude MTS Subwoofer18Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignatorPrelude MTS Subwoofer19Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignatorPrelude MTS Subwoofer21Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignatorPrelude MTS Subwoofer22Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignator630049 PCB, INPUTPrelude MTS Subwoofer23Prelude Amp Assembly Parts List (Cont.)Part#DescriptionQtyDesignatorPrelude MTS Subwoofer24OPAMP, QUAD 14P DIL TL074/084, LM324N COMPARATOR U102, U103, U201, U202, U203, U301, U306OUTPUT CV+V-OUTPUT B-INPUT A-INPUT D-INPUT B-INPUT C+INPUT A+INPUT D+INPUT B+INPUT COUTPUT AOUTPUT D1411141310251293687ABCDOPAMP, DUAL 8PIN DIL TL082U101000952Base3 Collector1 Emitter123 TRANS, NPN 150V 0.6A 2N5551, 2N4401,Q303, Q308, Q322, Q323,Q204, Q314, Q315, Q317,Q5012Base3 Collector1 Emitter123TRANS, PNP 150V 0.6A 2N5401,Q302,Q304, Q309, Q313, Q316, Q324, Q401-5V TO220 LM7905CTREGULATORU303, 50221654FOTO, 6PIN MOC3012U3041 2 3IRFZ40, Q403, Q404, Q406, Q407MOSFET, IRF640/9640, T0220ABQ305, Q310, Q320, Q321, Q306,Q307, Q311, Q312PWM, 8PIN DIL UC3842NU3075.0VOscPWMUNDER VOLTAGELOCKOUTOUTPUTCURRENT SENSEGND5Vcc8421763RR12348765A-+B OUTPUTA OUTPUTB -INPUTA -INPUTB +INPUTA +INPUTV-V+B-+FOTO, 6PIN 4N35U104123654TRANS, NPN 250V 1A T0220 TIP47C Q319+5V TO220 LM7805CTREGULATORU302, 5011. GROUND2. INPUT3. OUTPUT1. INPUT2. GROUND3. OUTPUTJFET, Q201, Q202,Q205, Q301, Q1011231. G2. D3. S1. D2. S3. G3Integrated Circuit DiagramsPrelude MTS Subwoofer25EMI PCB (AC Filter)Input PCBPrelude MTS Subwoofer26Linear/Buck PCBPrelude MTS Subwoofer27Feature PCBPrelude MTS Subwoofer28Power Supply PCB2930313233343536
