Technics-SBWA330-sub-sm 维修电路原理图.pdf

Table Of ContentsCOVER 1 Safety Precautions 1.1 GENERAL GUIDELINES 1.1.1 LEAKAGE CURRENT COLD CHECK 1.1.2 LEAKAGE CURRENT HOT CHECK (See Figure 1.) 2 Handling the Lead-free Solder 2.1 About lead free solder (PbF) 3 Before Repair and Adjustment 4 Protection Circuitry 5 Connection of the Speaker Cables 6 Disassembly Procedure 6.1 Disassembly of the Speaker Unit 6.2 Main Component Replacement Procedures 6.2.1 Replacement of the Power IC 7 Connection of the Speaker Wiring 8 Block Diagram 9 Schematic Diagram 10 Printed Circuit Board 11 Wiring Connection Diagram RadioFans.CN 收音机爱 好者资料库PV12 Illustration of IC s, Transistors and Diodes 13 Parts Location and Replacement Parts List 13.1 Cabinet 13.1.1 Cabinet Parts Location 13.1.2 Cabinet Parts List 13.2 Component Parts List 13.3 Packing Materials & Accessories Parts List 13.4 Packaging RadioFans.CN 收音机爱 好者资料库Service ManualTOP NEXT ORDER NO. MD0305153C2Active Subwoofer SystemG SB-WA330E SB-WA330EBColour(S).Silver TypeSpecificationActive subwoofer Type1 way, 1 speaker, bass-ref.Speaker unitWoofer17 cm cone type 4 Input power200 W (Music)Output sound pressure level80 dB/ W (1.0 m)Frequency range40 Hz-220 Hz (-16 dB)45 Hz-180 Hz (-10 dB)Dimensions (W x H x D)160 x 450 x 424 mmMass11.5 kgGeneral Power supplyAC 230 V, 50 Hz (E)AC 230-240 V, 50 Hz (EB)Power consumption210 WNote : Specifications are subject to change without notice.Mass and dimensions are approximate.System : SC-HT500 (E)Music Center: SA-HT500 (E)Satellite speakers: SB-HT500 (E)Active Subwoofer: SB-WA330 (E)System : SC-HT500 (EG)Music Center: SA-HT500 (EG)Satellite speakers: SB-HT500 (E)Active Subwoofer: SB-WA330 (E)System : SC-HT500 (EB)Music Center: SA-HT500 (EB)Satellite speakers: SB-HT500 (E)Active Subwoofer: SB-WA330 (EB)SB-STP1EG-S consists of SB-WA330E-S x1,SB-FS900E-S x 4 and SB-PC52E-S x 1SB-STP1EB-S consists of SB-WA330EB-S x1,SB-FS900E-S x 4 and SB-PC52E-S x 1 2003 PANASONIC AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.TOP NEXT 1 Safety PrecautionsTOP PREVIOUS NEXT 1.1 GENERAL GUIDELINES 1.1.1 LEAKAGE CURRENT COLD CHECK 1.1.2 LEAKAGE CURRENT HOT CHECK (See Figure 1.) TOP PREVIOUS NEXT 1.1 GENERAL GUIDELINESTOP PREVIOUS NEXT 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.1.1.1 LEAKAGE CURRENT COLD CHECK 1.1.2 LEAKAGE CURRENT HOT CHECK (See Figure 1.) TOP PREVIOUS NEXT 1.1.1 LEAKAGE CURRENT COLD CHECKTOP PREVIOUS NEXT 1. Unplug the AC cord and connect a jumper between the two prongs on the plug.2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis,the reading should be between 1M and 5.2.When the exposed metal does not have a return path to the chassis, the reading must be .Fig. 1 TOP PREVIOUS NEXT 1.1.2 LEAKAGE CURRENT HOT CHECK (See Figure 1.)TOP PREVIOUS NEXT 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.4. Check each exposed metallic part, and measure the voltage at each point.5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outsideof the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. TOP PREVIOUS NEXT 2 Handling the Lead-free SolderTOP PREVIOUS NEXT 2.1 About lead free solder (PbF) TOP PREVIOUS NEXT 2.1 About lead free solder (PbF)TOP PREVIOUS NEXT Distinction of PbF P.C.B. : P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.Caution: G Pb free solder has a higher melting point that standard solder; Typically the melting point is 50 - 70F (30 - 40C) higher.Please use a high temperature soldering iron. In case of the soldering iron with temperaturecontrol, please set it to 700 20F (370 10C).G Pb free solder will tend to splash when heated too high (about 1100F/600C).G When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enough.TOP PREVIOUS NEXT 3 Before Repair and AdjustmentTOP PREVIOUS NEXT Disconnect AC power, discharge Power Supply Capacitors C546, C547, C548, C549 through a 10 , 1 W resistor to ground.DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.After repairs are completed, restore power gradually using a variac, to avoid overcurrent.Current consumption at AC 230V, 50Hz in NO SIGNAL mode should be 400 mA (E).Current consumption at AC 230240V, 50Hz in NO SIGNAL mode should be 400 mA (EB).TOP PREVIOUS NEXT 4 Protection CircuitryTOP PREVIOUS NEXT The protection circuitry may have operated if either of the following conditions are noticed:G No sound is heard when the power is turned on.G Sound stops during a performance.The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.If this occurs, follow the procedure outlines below:1. Turn off the power.2. Determine the cause of the problem and correct it.3. Turn on the power once again after one minute.Note : When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.TOP PREVIOUS NEXT 5 Connection of the Speaker CablesTOP PREVIOUS NEXT G Be sure to connect speaker cables before connecting the AC power supply cord.G The load impedance of any speaker used with this unit must be 4.G Be sure to connect the cable from the right speaker to the right terminal and the cable from the left speaker to the left terminal. 1. Strip off the outer covering, and twist the center conductor. Make sure the bare ends of the wires are not unravelled. (If they are, twist them tight again.)2. Insert the wire to the rear panel of the unit and close the lever.Notes :G To prevent damage to circuitry, never short-circuit positive (+) and negative (-) speaker wires.G Be sure to connect only positive (red) wires to positive (+) terminals and negative (black) wires to negative (-) terminals.6 Disassembly ProcedureTOP PREVIOUS NEXT “ATTENTION SERVICER” Some chassis components may have sharp edges.Be careful when disassembling and servicing.1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. Contents G Disassembly of the Speaker Unit G Main Component Replacement Procedures 6.1 Disassembly of the Speaker Unit 6.2 Main Component Replacement Procedures 6.2.1 Replacement of the Power IC TOP PREVIOUS NEXT 6.1 Disassembly of the Speaker UnitTOP PREVIOUS NEXT Step 1: Remove 2 screws from the rear panel.Step 2: Remove all screws.Step 3: Remove the Stand Base.Step 4: Remove 5 screws from the speaker bottom.Step 5: Pull the Power/Amp Unit as shown.Step 6: Release the connector CN506 and pull out the Power/Amp Unit.Step 7: Push the Net Frame from two holes inside the unit.Step 8: Remove the Net Frame.Step 9: Remove all the screws.Step 10: Remove the Speaker.Step 11 & 12: Remove all the screws.Step 13: Release the connector CN507.Step 14: Remove the 2 screws.Step 15 & 16: Remove all the screws.Step 17: Place the Power PCB as shown for checking.Checking for AC Inlet PCB.TOP PREVIOUS NEXT 6.2 Main Component Replacement ProceduresTOP PREVIOUS NEXT 6.2.1 Replacement of the Power IC TOP PREVIOUS NEXT 6.2.1 Replacement of the Power ICTOP PREVIOUS NEXT Step 1 & 2: Remove all the screws.Step 3: Desolder the Power IC terminal and replace the component.TOP PREVIOUS NEXT 7 Connection of the Speaker WiringTOP PREVIOUS NEXT TOP PREVIOUS NEXT 8 Block DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 9 Schematic DiagramTOP PREVIOUS NEXT (All schematic diagrams may be modified at any time with the development of the new technology)Note:G The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the basis of chassis. Accordingly, there may arise some error in voltage values and waveformsdepending upon the internal impedance of the tester or the measuring unit.G Importance safety notice : Components identified by ; mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. Whenreplacing any of components, be sure to use only manufacturers specified parts shown in the parts list.Caution ! IC, LSI and VLSI are sensitive to static electricity.Secondary trouble can be prevented by taking care during repair.G Cover the parts boxes made of plastics with aluminium foil.G Put a conductive mat on the work table.G Ground the soldering iron.G Do not touch the pins of IC, LSI or VLSI with fingers directly.TOP PREVIOUS NEXT 10 Printed Circuit BoardTOP PREVIOUS NEXT TOP PREVIOUS NEXT 11 Wiring Connection DiagramTOP PREVIOUS NEXT TOP PREVIOUS NEXT 12 Illustration of IC s, Transistors and DiodesTOP PREVIOUS NEXT TOP PREVIOUS NEXT 13 Parts Location and Replacement Parts ListTOP PREVIOUS NEXT Notes:G Important safety notice:Components identified by mark have special characteristics important for safety.Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used. When replacing any of these components, be sure to use only manufacturers specified parts shown in the parts list.G The parenthesized indications in the Remarks columns specify the areas or colour. (Refer to the cover page for area or colour)Parts without these indications can be used for all areas.G Capacitor values are in microfarads (F) unless specified otherwise, P= Pico-farads (pF), F= Farads.G Resistance values are in ohms, unless specified otherwise, 1K=1,000 (OHM).G The marking (RTL) indicates that the Retention Time is limited for this items. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time. The retention period of a availabilityis dependent on the type of assembly, and in accordance with the laws governing part and product retention. After the end of this period, the assembly will no longer be available.G M Indicates in the Remarks columns indicates parts supplied by PAVCSG. G The “(SF)” mark denotes the standard part.13.1 Cabinet 13.1.1 Cabinet Parts Location 13.1.2 Cabinet Parts List 13.2 Component Parts List 13.3 Packing Materials & Accessories Parts List 13.4 Packaging TOP PREVIOUS NEXT 13.1 CabinetTOP PREVIOUS NEXT 13.1.1 Cabinet Parts Location 13.1.2 Cabinet Parts List TOP PREVIOUS NEXT 13.1.1 Cabinet Parts LocationTOP PREVIOUS NEXT TOP PREVIOUS NEXT 13.1.2 Cabinet Parts ListTOP PREVIOUS NEXT Ref. No.Part No.Part Name & DescriptionRemarksCABINET AND CHASSIS1 RFKHBWAMT1PS SPK CABINET ASSYM1-1 RMG0520-KCATCHM1-2 XTB4+12AFNSCREWM2 RGK1601-SSTAND ORNAMENTM3 RMQ0705EVA PACKINGM4 RKA0147-KFOOTM5 RYB0298AJNET FRAME ASSYM6 XTB4+14AFNSCREW (WOOFER)M7 RGNX0175A-SNAME PLATE LABELME7 RGNX0175B-SNAME PLATE LABELMEB8 REM0072-3FANM9 RGR0332A-JAREAR PANELM10 RHD30092SCREW (MAIN PCB)M11 RMR1485-WLED HOLDERM12 XTB3+16AFZSCREWM13 XTB3+20JFZSCREWM14 XTBS3+8JFZ1SCREWM15 XTS4+20JFZSCREWM16 XTW3+15TSCREWM17 XYC26+CJ6FZSCREWM18 SHE187-6JPCB SUPPORTM19 RMC0158-STR-FIXTUREMTOP PREVIOUS NEXT 13.2 Component Parts ListTOP PREVIOUS NEXT Ref. No.Part No.Part Name & DescriptionRemarksPRINTED CIRCUIT BOARDREP3435FPOWER P.C.B./ AC INLET P.C.B./ TRANSFORMER P.C.B./ LED P.C.B. ME (RTL)REP3435GPOWER P.C.B./ AC INLET P.C.B./ TRANSFORMER P.C.B./ LED P.C.B. MEB (RTL)INTEGRATED CIRCUITSIC501RSN311W64B-PIC HICMIC502C0AABB000055IC AMPMTRANSISTORSQ501KTC3199GRTATRANSISTORMQ502KTC3199GRTATRANSISTORMQ503KTC3199GRTATRANSISTORMQ505KTC3199GRTATRANSISTORMQ506KRA102MTATRANSISTORMQ507KTC3199GRTATRANSISTORMQ508KTA12710YTATRANSISTORMQ509KTC3199GRTATRANSISTORMQ510KTC3199GRTATRANSISTORMQ511KTC2026TRANSISTORMQ513KTC3199GRTATRANSISTORMQ514KTC3199GRTATRANSISTORMQ515KTC3199GRTATRANSISTORMQ516KRC102MTATRANSISTORMQ517KTC2026TRANSISTORMQ519KTC3199GRTATRANSISTORMQ520KRA102MTATRANSISTORMDIODESD500B0AACK000004DIODEMD501B0JAPG000019DIODEMD502B0JAPG000019DIODEMD503MA2C700A0FDIODEMD504B0AACK000004DIODEMD505B0AACK000004DIODEMD506B0AACK000004DIODEMD507B0AACK000004DIODEMD508B0AACK000004DIODEMD509B0BA5R100013DIODEMD510B0BA9R600002DIODEMD511B0HARM000017DIODEMD512B0HARM000017DIODEMD513B0HARM000017DIODEMD514B0HARM000017DIODEMD515B0EAKM000085DIODEMD516B0EAKM000085DIODEMD517B0HARM000017DIODEMD518B0HARM000017DIODEMD519B0AACK000004DIODEMD524SLI325URCT31DIODEMD525B0BA6R600008DIODEMD527B0EAKM000085DIODEMD528B0EAKM000085DIODEMD529B0EAKM000085DIODEMD530B0EAKM000085DIODEMD533B0BA5R100013DIODEMCONNECTORSCN501K1FB125B0095SYSTEM CONNECTORMCN502K1KB07B000202P CONNECTORMCN503K1KA12A00066CONNECTORMCN506K1KA03A00006CONNECTORMCN507K1KA02A00008CONNECTORMCP502K1KA07A001232P CONNECTORMCOILS & TRANSFORMERSL500RLQZ371LINE FILTERM L501G0AR76Y00001CHOKE COILML502G0AR76Y00001CHOKE COILML503G0AR76Y00001CHOKE COILML504G0AR76Y00001CHOKE COILML505G0AR76Y00001CHOKE COILMT501ETP76VSU62CAPOWER TRANSFORMERM T502G4C2AAJ00005BACK-UP TRANSFORMERM COMPONENT COMBINATIONZ501ERZV10V511CSZENERM RELAYRLY501 RSY0040M-0PRIMARY RELAYM SPEAKERSP1EAST17PL21A6SPEAKERFUSESF1K5D202BK0005250V 2A FUSEM FUSE HOLDERSFC501EYF52BCFUSE HOLDERMFC502EYF52BCFUSE HOLDERMFUSE PROTECTORFP1K5G502AA00025A FUSE PROTECTORM HOLDERSH500K1YF1200000212P WIRE HOLDERMH505ARMR03123P CABLE HOLDERMH505BRMR03123P CABLE HOLDERMWIRESW1REE1205WIRE UNITMW2REE1204WIRE UNITMW500REX1146WIRE UNITMW505RWJ1103320XX3