JBL-PSWD110-sub-sm 维修电路原理图.pdf

JBL Consumer Products Inc.250 Crossways Park DriveWoodbury, N.Y. 117971-800-336-4JBL in the USAA Harman International CompanyRev C 8/2000PSW-D110/DPS-10Powered SubwooferSERVICE MANUALRadioFans.CN 收音机爱 好者资料库SAFETY INFORMATIONWarningAny person performing service of this unit will be exposed tohazardous voltages and the risk of electric shock.It isassumed that any person who removes the amplifier fromthis cabinet has been properly trained in protecting againstavoidable injury and shock.Therefore, any serviceprocedures are to be performed by qualifiedservicepersonal ONLY!CautionThis unit does not have a power switch. Hazardousvoltages are present within the unit whenever it isplugged in.Before the amplifier is plugged in, be sure its rated voltagecorresponds to the voltage of the AC power source to beused.Incorrect voltage could cause damage to theamplifier when the AC power cord is plugged in. Do notexceed rated voltage by more than 10%: operation below90% of rated voltage will cause poor performance or mayshut the unit off.Leakage/Resistance CheckBefore returning the unit to the customer, perform a leakageor resistance test as follows:Leakage Current. Note there is no power switch on this unit.When the power plug is plugged in, the unit is live. Connectthe unit to its rated power source. Using an ammeter,measure the current between the neutral side of the ACsupply and chassis ground of the unit under test. if leakagecurrent exceeds 0.5mA, the unit is defective. Reverse thepolarity of the AC supply and repeat.Resistance. Measure the resistance from either side of theline cord to chassis ground. If it is less than 500k ohms, theunit is defective.WARNING! DO NOT return the unit to the customer if it failsone of these tests until the problem is located and corrected.Critical ComponentsAll components identified with the IEC symbolin the parts list and the schematic diagramdesignate components in which safety can beof special significance when replacing acomponent identified with. Use only thereplacement parts designated in the parts list or parts withthe same rating of resistance, wattage or voltage.List of Safety Components RequiringExact ReplacementsF1Fuse SLO BLO 1.25A 250V UL approvedPWRCORDSPT-2 or better with polarized plug, ULapproved wired with the hot side to fusedside. Use with factory replacement panelstrain relief only.TRX1Transformer. Use only factory replacement.DBRBridge diode. Use only factory replacement.C1, 24700uF, 50V electrolytic filter caps. Be surereplacement part is at least the sameworking voltage and capacitance rating.Also the lead spacing is important.Incorrect spacing may cause prematurefailure due to internal cabinet pressure andvibration.C610uF 50V electrolytic radialSee Page 14 Service BulletinS52AMIPower output module. Use only factoryreplacementFaceplateFaceplate. Use only factory replacementAir leak cover Use only factory replacementCMC1Use only factory replacementL1Use only factory replacementFuse PCBUse only factory replacementMain PCBUse only factory replacement2Amplifier/SubwooferPSW-D110/DPS-10RadioFans.CN 收音机爱 好者资料库3Amplifier/SubwooferPSW-D110/DPS-10TABLE OF CONTENTSSAFETY INFORMATION.2TABLE OF CONTENTS.3GENERAL SPECIFICATIONS.3DETAILED SPECIFICATIONS.4PSW-D110/DPS-10 CONTROLS ANDTHEIR FUNCTION.6OPERATION.7SPEAKER CONNECTIONS.8TROUBLESHOOTING .9PSW-D110/DPS-10 TEST SET UPAND PROCEDURE.10PSW-D110/DPS-10 POWER AMPTEST PROCEDURE and FLOW CHART.11SERVICE BULLETIN JBL9902 REV1 - MAY 1999 .14SERVICE BULLETIN JBL9903 - APRIL 1999 .15SERVICE BULLETIN JBL2000-01 - JANUARY 2000.16CABINET EXPLODED VIEWS .17AMPLIFIER EXPLODED VIEW .18PSW-D110/DPS-10 MECHANICAL PARTS LIST.19PACKING EXPLODED VIEWS.20PSW-D110/DPS-10 Version 3.53 PCB(Component Side) .21PSW-D110/DPS-10 Version 3.53 PCB(Solder Side) .22PSW-D110/DPS-10 Version 3.93 PCB(Component Side) .23PSW-D110/DPS-10 Version 3.93 PCB(Solder Side) .24PSW-D110/DPS-10 ELECTRICAL PARTS LIST .25PSW-D110/DPS-10 INTEGRATED CIRCUITS .26PWS-D110/DPS-10 SCHEMATIC 1 of 2.27PWS-D110/DPS-10 SCHEMATIC 2 of 2.28GENERAL SPECIFICATIONSAmplifier Power (RMS). . . . . . . . 150 wattsDriver 10. . . . . . . . . . . . . High-Polymer LaminateInputs . . . . . . . . . . . . . . . Line Level and Speaker LevelOutputs. . . . . . . . . . . . . . Line Level and Speaker LevelLow-Pass Frequency. . . . . . . . Continuously variable from 60Hz 180HzHigh-Pass Frequency . . . . . . . . Continuously variable from 60Hz 180Hzwhen using line-level inputs180Hz when using speaker-level inputsFrequency Response. . . . . . . . 30Hz low-pass crossover settingPSW-D110DPS10Dimensions (H x W x D) . . . . . . . 15-3/8 x 15-3/8 x 1718-1/16 x 14-7/8 x 15-7/8(391 x 391 x 432mm)(459 x 378 x 403mm)Weight . . . . . . . . . . . . . . . 33 lbs/15 kg30 lbs/13.6 kgDETAILED SPECIFICATIONSLINE VOLTAGEYes/NoHi/Lo LineUnitNotesUS 120vac/60HzYes108-132VrmsNormal OperationEU 230vac/50-60HzYes207-264VrmsNormal operation, MOMS requiredParameterSpecificationUnitConditionsNotesAmp SectionType (Class AB, D, other)DClass D Preferred.Sink required for Class ABLoadImpedance(speaker)4OhmsNominalZ-curve requiredRated Output Power150Watts1 input drivenPeak power75Watts1 input drivenRMSTHD Rated Power0.1%22k filter75w (Power Bandwidth 30-100Hz)THD 1 Watt0.1%22k filterDC Offset2mV-DC Speaker OutputsDamping factor200DFInput SensitivityInput Frequency50HzNominal Freq.1 input drivenLine Input110mVrmsTo Rated Power/ Vol Max1 input drivenSpeaker/Hi Level Input2.7VrmsTo Rated Power/ Vol Max1 input driven: AP source Z = 25 ohmsSignal to NoiseSNR-A-Weighted100dBArelative to 75w powerA-Weighting filterSNR-unweighted75dBrrelative to 75w power22k filterSNR rel. 1W-unweighted65dBrrelative to 1W Output22k filterResidual Noise Floor2mVrmsVolume max, using RMS reading DMM/VOM (or A/P)Residual Noise Floor1.5mVrms(max)Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)Input ImpedanceLine Input10kohmsNominalSpeaker/Hi Level Input200ohmsNominalFilters0dBr = 1w 50HzLowPass(fixedorvariable)VariableLow Pass filter (point orrange)60-120Hz-3dB PointSlope18dB/OctaveQ1DampingSubsonic filter (HPF)25Hz-3dB PointSlope12dB/OctaveQ1Damping4Amplifier/SubwooferPSW-D110/DPS-10Limiter (yes/no)YesTHD at Max. OutputPower10%Maximum Output PowerMaximum THD as a result of limiting.FeaturesPhase Switch (yes/no)yesVolumepotTaper(lin/log)linearInput ConfigurationLineIn(L,C,R,AC3,Mono)L,REnabled w/Line/Spkr InputSelect SwitchLine Outputs (L,C,R)L,RBuffered Output / Pre-Volume controlLine-Out Adj. X-over130-240HzVar-HPF (Pot CCW and CWpositions)Rear panel Variable xoverSpkr/HiLevelIn(L,C,R,mono)L,REnabled w/Line/Spkr InputSelect SwitchSpkr Out: Hi Pass Filter100Hz8 ohm Satellite: 6dB/octpassive xoverDriven from zero ohms source impedanceSignal-Present LEDBi-Color LED (green=signal/ red=no signal)Signal-Present InputFreq.100HzNominal200uF Series Cap on PCBSignal-Present Level2mV100Hz into Line Input w/ 1 ch.drivenS i g n a l - P r e s e n tBandwidth1kHzSignal-Present-LPF for noiseimmunitySignal-Present Turn-ontime1sec.Amp connected and AC on, then input signal appliedAuto Mute/ Turn-OFFTime15min.T before muting, after signalis removedPower on Delay time3sec.AC Power AppliedTransients/PopsSignal-Present Transient5mV-peak Speaker OutputsTurn-on Transient500mV-peak Speaker OutputsAC Line cycled from OFF to ONTurn-off Transient500mV-peak Speaker OutputsAC Line cycled from ON to OFFEfficiencyStand-by Input Power17Watts nom. line voltageAC Power Cons.1W18Watts nom. line voltagePowerCons.ratedpower107Watts nom. line voltageEfficiency70.09%Relative to 75w outputProtectionShort Circuit ProtectionyesDirect short at outputLine Fuse Rating1.25AmpsType-T or Slo Blo5Amplifier/SubwooferPSW-D110/DPS-101. Power - (PSW-D110 ONLY) This light will be REDwhen the unit is plugged in and not receiving a signal;when the PSW-D110 receives a signal, the light will cycleto GREEN. If no signal is received after 10 15 minutesthe light will cycle back to RED (standby) until a signal ispresent again.2. Level Control - The subwoofer Level Control,(PSW-D110, located on the front panel, DPS-10, on therear panel) adjusts the volume of the subwoofer relativeto the rest of the system.3. High Pass Control - Controls the the roll-off point ofthe highest frequency the subwoofer will produce.4. Phase Switch - Changes the subwoofers output to bein phase or 180 degrees out of phase with the programmaterial.5. Low Pass Control - Controls the roll-off point of thelowest frequency produced at the High Pass OutputJacks.6. High Pass Output - When using the Line-Level Inputjacks, these are connected to an external power amplifieror receiver to power the main loudspeakers with a highpass filter if desired.7. Line Input - Main Input connection to subwoofer(preferred).8. Speaker In Jacks - Main Input connection tosubwoofer when line level, subwoofer, or pre-amp outputconnectors are not availible, or when a high pass filter(set at 180Hz) to main loudspeakers is desired throughthe Speaker Output Jacks.9. Speaker Out Jacks - Connected to main loudspeakerswhen the Speaker Input Jacks are used.6Amplifier/SubwooferPSW-D110/DPS-10RRLLSPKRINSPKROUT60901501801206090150180120RLLineHigh PassOutputInput180o0oPhaseHighPassLowPassminmaxFront Panel (only)PSW-D110Rear Panel213567894PSW-D110/DPS-10 CONTROLS AND THEIR FUNCTIONOPERATIONCrossover AdjustmentsHigh-Pass Control This control is only active if you are using the hook-upmethod described in detail on page 8, Figure 3. TheHigh-Pass control determines the frequency at which themain speakers will start reproducing sounds. If your mainspeakers can comfortably reproduce some low-frequencysounds, also set this control to a lower frequency setting,between 50Hz 100Hz. This will concentrate thesubwoofers efforts to the ultradeep bass sounds, while yourmain speakers continue to reproduce the mid-bassinformation. If you are using smaller bookshelf speakersthat do not extend to the lower bass frequencies, set thehigh-pass crossover control to a higher setting, between125Hz 180Hz. With this setting, your main speakers willnot have the burden of reproducing any low-frequencysounds.Final adjustment and blending of the low-pass andhigh-pass controls may evolve over several listeningsessions. A good starting point would be to set both the low-and high-pass controls to the same frequency and adjustfrom that point.Low-Pass ControlThe Low-Pass control determines the highest frequency atwhich the subwoofer reproduces sounds. If your mainspeakers can comfortably reproduce some low-frequencysounds, set this control to a lower frequency setting,between 50Hz 100Hz. This will concentrate thesubwoofers efforts on the ultradeep bass sounds requiredby todays films and music. If you are using smallerbookshelf speakers that do not extend to the lower bassfrequencies, set the low-pass crossover control to a highersetting, between 120Hz 180Hz.PhasePhase ControlThe Phase Control determines whether the subwooferspeakers piston-like action moves in and out with the mainspeakers, 0?, or opposite the main speakers, 180?. There isno correct or incorrect setting. Proper phase adjustmentdepends on several variables such as room size, subwooferplacement and listener position. Adjust the phase switch tomaximize bass output at the listening position.Remember, every system, room and listener is different.There are no right or wrong settings; any setting you choosewill result in excellent performance. Should you decide tofine-tune your system for optimum performance, be patientand trust your ears. It will be worth the effort involved to fully“tweak” your system.7Amplifier/SubwooferPSW-D110/DPS-10SPEAKER CONNECTIONS1) If your receiver/amplifier has no subwoofer outputs orpreamp outputs for the left and right channels. See Figure 1.2) If your receiver/amplifier has subwoofer outputs orpreamp output jacks for the left and right channels. SeeFigure 2.Note: Some receivers/amplifiers have a single (mono)subwoofer output. In this case, it is recommended that youuse a “Y”-connector (not included) to maximize thesubwoofers performance.3) If your receiver/amplifier has preamp output jacks andmain input jacks for the left and right channels or you have aseparate pre-amp/ processor and power amplifier. SeeFigure 3.This method of hookup can offer the highest level ofperformance for your complete loudspeaker system. ThePSW-D110/DPS-10 incorporates a variable high-passcrossover in addition to a variable low-pass crossover.When hooked up as shown above, the subwoofer will limitthe low-frequency information that is returned to yourreceiver/amplifier. Your receiver/amplifier does not need towaste valuable power reproducing the low frequencies. Inaddition, since no low-frequency information is being sent toyour main loudspeakers, they are able to reproduce mid andhigh frequencies with greater clarity8Amplifier/SubwooferPSW-D110/DPS-10RRLLSPKRINSPKROUT60901501801206090150180120RLPowerLineHigh PassOutputInput180o0oPhaseHighPassLowPassLEFTSPEAKERRIGHTSPEAKERSPEAKER OUTPUTLEFTRIGHTRECEIVER/AMPLIFIERFigure 1Figure 2RRLLSPKRINSPKROUT60901501801206090150180120RLPowerLineHigh PassOutputInput180o0oPhaseHighPassLowPassRIGHTLOUDSPEAKERLEFTLOUDSPEAKERMAIN SPEAKER OUTPUTSUBWOOFER OUTLEFTLEFTRIGHTRIGHTRECEIVER/AMPLIFIERFigure 3RRLLSPKRINSPKROUT60901501801206090150180120RLPowerLineHigh PassOutputInput180o0oPhaseHighPassLowPassRIGHTLOUDSPEAKERLEFTLOUDSPEAKERMAIN SPEAKER OUTPUTLEFTRIGHTRIGHTLEFTRECEIVER/AMPLIFIERPREOUTMAININNOTE: The rear plate for the PSW-D110 is shown, which has the level control on the front panel. The DPS-10 has thislevel control on the rear panel (amplifier)TROUBLESHOOTINGIf you used the high-level (speaker) inputs and there is nosound from any of the speakers, check the following: Receiver/amplifier is on and a source is playing. Powered subwoofer is plugged in.Checkallwiresandconnectionsbetweenreceiver/amplifier and speakers. Make sure all wires areconnected. Make sure none of the speaker wires are frayed,cut or punctured. Review proper operation of your receiver/amplifier. If thereis low bass output, check the following: Make sure the connections to the left and right “SpeakerInputs” have the correct polarity (+ and ). Make sure that the sub-woofer is plugged into an activeelectrical outlet. Powered subwoofer is plugged in. Adjust the crossover point.If you used the line-level inputs and there is no sound fromthe subwoofer, check the following: Receiver/amplifier is on and a source is playing. Powered subwoofer is plugged in. Check all wires and connections between receiver/amplifier and subwoofer. Make sure all wires are connected.Make sure none of the wires are frayed, cut or punctured. Review proper operation of your receiver/amplifier.9Amplifier/SubwooferPSW-D110/DPS-10General FunctionUUT = Unit Under Test1.Connect both right and left line level inputs (RCA) to signal generator and UUT. Use Y-cable if necessary frommono source. VOLUME control should be full counterclockwise.2.Turn on generator, adjust to 50mV, 50