JBL-PSWD112-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 E 7/2001PSW-D112/DPS-12Powered SubwooferSERVICE MANUALRadioFans.CN 收音机爱 好者资料库SAFETY INFORMATIONWarningCautionLeakage/ResistanceCheckList of Safety Components RequiringExact Replacements(all parts POWER AMP PCB except TR2)C6 (Rev0)4.7uf 100V 80/-20% Electrolytic redial NPC6 (Rev1)4.7uf 100V 80/-20% Electrolytic redial NPTR2MPS A13 30V NPN(Darl)R4a/b/c0.1 0.5W 5% metal filmR93.3 5W 5% ceramic wirewoundR15100k 0.5W 5% carbon filmDBRBridge Rect 200V Use only factory replacement.R110M 0.25W 5% carbon filmR16, 171.8k 5W 5% ceramic wirewoundR33 (Rev0) only)332 0.5W 5% carbon filmR50 (Rev0) only)332 0.5W 5% carbon filmR52, 572.7k 5W 5% ceramic wirewoundR613.9k 3W 5% carbon filmS64AMIPower output module. Use only factoryreplacementFaceplateFaceplate. Use only factory replacementCMC1Use only factory replacementL1Use only factory replacementFuse PCBUse only factory replacementMain PCBUse only factory replacement4700uF,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.2Amplifier/SubwooferPSW-D110/DPS-10F1PWRCORDTRX1C1, 2Transformer. Use only factory replacement.SPT-2 or better with polarized plug, ULapproved wire with the hot side to fusedside. Use with factory replacement panelstrain relief only.Fuse SLO BLO 1.25A 250V UL approvedAny person performing service of this unit will be exposed to hazardous voltages and the risk of electric shock. It is assumed that any person who removes the amplifier from this cabinet has been properly trained in protecting against avoidable injury and shock. Therefore, any service procedures are to be performed by qualified service personal ONLY!Before returning the unit to the customer, perform a leakage or 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. Connect the unit to its rated power source. Using an ammeter, measure the current between the neutral side of the AC supply and chassis ground of the unit under test. If leakage current exceeds 0.5A, the unit is defective. Reverse the polarity of the AC supply and repeat.Resistance. Measure the resistance from either side of the line cord to chassis ground. If it is less than 500k ohms, the unit is defective.WARNING! DO NOT return the unit to the customer if it fails one of these tests until the problem is located and corrected.This unit does not have a power switch. Hazardous voltages are present within the unit whenever it is plugged in.Before the amplifier is plugged in, be sure its rated voltage corresponds to the voltage of the AC power source to be used. Incorrect voltage could cause damage to the amplifier when the AC power cord is plugged in. Do not exceed rated voltage by more than 10%: operation below 90% of rated voltage will cause poor performance or may shut the unit off.00465-2IMPORTANT SERVICE NOTES: When testing the PSW-D112/DPS-12 Series amplifier, a load must always beconnected to the output terminals, whether the woofer, or a 4 to 8 ohm resistive load.All AC powered test instruments (meters, oscilloscopes, etc.) must have a floating ground, i.e., beconnected to an isolation transformer.Critical ComponentsAll components identified with the IEC symbol in the parts list and the schematic diagram designate components in which safety can be of special significance when replacing a component identified with . Use only thereplacement parts designated in the parts list or parts with the same rating of resistance, wattage or voltage.RadioFans.CN 收音机爱 好者资料库3Amplifier/SubwooferPSW-D112/DPS-12TABLE OF CONTENTSSAFETY INFORMATION.2TABLE OF CONTENTS.3GENERAL SPECIFICATIONS.3DETAILED SPECIFICATIONS.4CONTROLS AND THEIR FUNCTION.6OPERATION.7SPEAKER CONNECTIONS.8TROUBLESHOOTING .10TEST SET UP AND PROCEDURE.11TESTING PROCEDURE.12POWER AMP MODULE TESTING FLOW CHART.14SERVICE BULLETIN JBL2001- 02 - FEBRUARY 2001.16SERVICE BULLETIN JBL9903 Rev 1 - FEBRUARY 2001.15CABINET EXPLODED VIEWS.17AMPLIFIER EXPLODED VIEW.18MECHANICAL PARTS LIST.19PACKING EXPLODED VIEWS.20Rev0 PCB (Component Side).21Rev0 PCB (Solder Side).22PCB (Component Side) PREAMP Rev1,PWRAMP Rev1.23PCB (Solder Side) PREAMP Rev1,PWRAMP Rev1.24ELECTRICAL PARTS LIST (Rev0).25ELECTRICAL PARTS LIST Rev1 PCB.27INTEGRATED CIRCUITS.29SCHEMATIC 1 of 3 (Rev0) .30SCHEMATIC 2 of 3 (Rev0) .31SCHEMATIC 3 of 3 (Rev0) .32PREAMP SCHEMATIC Rev1.33POWERAMP SCHEMATIC Rev1.0.34POWERAMP SCHEMATIC Rev1.1.35GENERAL SPECIFICATIONSAmplifier Power (RMS). . . . . . . . 250 wattsDriver 12. . . . . . . . . . . . . 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 inputs150Hz when using speaker- level inputsFrequency Response. . . . . . . . 28Hz low- pass crossover settingPSW-D112DPS-12Dimensions (H x W x D) . . . . . . . 17- 1/2 x 17- 1/2 x 19- 1/822- 1/8 x 17- 1/2 x 17- 1/2(445 x 445 x 486mm)(562 x 445 x 445mm)Weight . . . . . . . . . . . . . . . 40 lbs/18.2 kg38 lbs/17.3kgNOTE: CERTAIN DRAWINGS AND CONNECTIONS WERE DEPICTED INCORRECTLY IN SOME EARLY COPIESOF THE PSW-D112 AND DPS-12 OWNERS MANUALS.THEY INCLUDE:1. DRAWING OF RCA LINE LEVEL INPUT/OUTPUT JACKS ON PAGES 3, 4, & 5; ALL CHANNELS -RIGHT SIDESHOULD BE “LINE OUT”, LEFT SIDE SHOULD BE “LINE IN”.2. CONNECTION ON PAGE 4 OF OWNERS MANUAL -SINGLE CABLE DIRECT INPUT (FOR DOLBY DIGITAL ORDTS SURROUND); SINGLE CABLE FROM YOUR RECEIVER/PROCESSOR SHOULD CONNECT TO:Rev0 version -THE “CENTER CHANNEL LINE IN” JACK ON YOUR SUBWOOFER.Rev1 version -EITHER LEFT OR RIGHT INPUT JACK ON YOUR SUBWOOFER.THOSE DRAWINGS ARE CORRECT IN THIS DOCUMENT, SEE PAGES 8 & 9.DETAILED SPECIFICATIONSLINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotesUS 120vac/60HzYes108-132120VrmsNormal OperationEU 230vac/50-60HzYes207-264230VrmsNormal operation, MOMS requiredParameterSpecificationUnitTest LimitsConditionsNotesAmp SectionType (Class AB, D, other)Dn/aClass D Preferred.Sink required for ClassABLoad Impedance (speaker)8Ohmsn/aNominalZ-curve requiredRated Output Power250Watts1501 input drivenPeak powerTHD Rated Power0.3%122k filter160w (Power Bandwidth 30-100Hz) 120VACTHD 1 Watt0.5%0.822k filterDC Offset90DF50Input SensitivityInput Frequency40HzNominal Freq.1 input drivenLine Input265mVrms?2dBTo Rated Power/ Vol Max1 input driven: AP source Z = 600 ohmsSpeaker/Hi Level Input9.3Vrms?2dBTo Rated Power/ Vol Max1 input driven: AP source Z = 25 ohmsSignal to NoiseSNR-A-Weighted100dBA90Relative to rated outputA-Weighting filterSNR-unweighted75dBr70Relative to rated output22k filterSNR rel. 1W-unweighted(22k)65dBr55relative to 1W Output22k filterResidual Noise Floor2mVrms2.5Volume max, using RMS reading DMM/VOM (or A/P) , BW 20KHzResidual Noise Floor1.5mVrms(max)2Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+harmonics) , BW1M (NO LOAD)Resistance from V+ of the module to V- of the module should read 5kResistance from V+ of the module to O/P of the module should read 1MResistance from V- of the module to O/P of the module should read 1M2. Power UpLED RED - With a 35mV signal to Low level input, LED should change to GREEN3. D.C. Operation -Voltage measurements (DVM)Between+6VV+O/PV-+15VS/DFRI/PGND-15VAndV-GNDGNDGNDGNDV-GNDGNDGNDGNDShouldbeReading+6.2V+90.1V0V-90.1V+15.5V+5.75V0V0V0V-15.5V4. Check Switching Frequency-Use scope (EITHER USES AN ISOLATION TRANSFORMER OR ATTACHES THE PROBE TIP TO SPK- and REFERENCE LEAD TO SPK+)-Reading 100kHz +/-10%,500mVppB. Pre Amp Section 1. Low Level Input Sensitivity -Set upTurn level and Low-Pass Pot Fully CWGenerator set at 100mV39HzSignal to Low level input -Voltage measurementsOP AMPU1(14)U1(7)U1(1)U2(8)U2(14)U2(1)U4(1)U4(7)SPEAKEROUTPUT271mV409mV486mV471mV456mV460mV2.94V2.67V17.4V2. High Level Input Sensitivity -Set upTurn level and Lo Pass Pot Fully CW Set Generator at 3.6V39HzSignal to High level input -Voltage measurements 17.4V at speaker output13Amplifier/SubwooferPSW-D112/DPS-123. Low-Pass -Set upSet Generator at 100mV100HzSignal to Low level inputMeasure voltage at speaker output -Voltage measurementLow-Pass Pot SettingOutputCW12.2VCCW1.2V4. High-Pass -Set upSet Generator at 100mV100HzSignal to Low level inputMeasure voltage at high-pass output -Voltage measurementHigh-Pass Pot SettingOutputCW24mVCCW55mV5. Direct out -Set upSet Generator at 100mV100HzSignal to Low level input -Voltage measurement 100mV at direct outSee flow chart next page for diagnostics.14Amplifier/SubwooferPSW-D112/DPS-12PSW-D112/DPS-12 POWER AMP MODULE TESTING FLOW CHART (REV0 ONLY)JBL Incorporated250 Crossways Park Dr.Woodbury, New York 11797 (516) 496-3400Service BulletinService Bulletin JBL9903 Rev1 - February 2001This is considered a Minor repairTo:All JBL Service CentersModels: PSW-D110, PSW-D112, ARC SUB 8, ARC SUB 10Subject:Check Solder Joints in Event of FailureSome performance related complaints in the PSW-D110, PSW-D112, ARC SUB 8 or ARC SUB 10 poweredSubwoofers may be caused by cold solder connections between the 28 pins of the Power Amp Module and themain circuit board. When troubleshooting, failure to check these joints can result in erroneous conclusions orwasted time.In the event you receive a PSW-D110, PSW-D112, ARC SUB 8 or ARC SUB 10 Subwoofer with thecomplaints “Dead, or No Output, or Motorboating (Oscillation)”, perform the steps listed below first beforeany further troubleshooting takes place:1)Unplug all cables, lay the subwoofer on a padded surface.2)Remove all Philips screws around the outer perimeter of the amplifier faceplate.3)Remove amplifier assembly; you should be able to remove the amplifier far enough out of the cabinet to service itwithout removing the woofer wires.4)Locate the Power Amp Module; it is the large gray component with a metal case. On the solder side of the circuitboard are the 28 soldered connections to the Module.5)Regardless of whether you can visibly see breaks in any of the connections or not, carefully re-solder all 28 pinconnections, adding 60/40 rosin core solder. Take care not “bridge” any connections on the board with solder.6)Inspect the solder joints to the main filter capacitors C1 and C2 on the main PCB and re-solder if needed.7)Replace the amplifier assembly back into the cabinet; replace the screws.8)Test the unit by applying a signal from a music source, adjust the volume to a moderate level and confirm theoriginal problem has been corrected.IMPORTANT SERVICE NOTES: When testing the PSW-D, or ARC Series amplifier, a load must always beconnected to the output terminals, whether the woofer, or a 4 to 8 ohm resistive load.All AC powered test instruments (meters, oscilloscopes, etc.) must have a floating ground, i.e. be connected toan isolation transformer.15JBL Incorporated250 Crossways Park Dr.Woodbury, New York 11797 (516) 496-3400Service BulletinService Bulletin JBL2001-02 - February 2001This is considered a Minor repairTo:All JBL Service CentersModels: PSW-D112 rev0*, DPS-12, PSW-D115Subject:Check Ribbon Cable Connection In Event Of FailureSome performance related complaints in the PSW-D or DPS Series powered Subwoofers may be caused bybroken or cold solder connections in the ribbon cable connector between the premamp and main PCB.When this condition occurs, it may also damage the Input Op-Amps U1/U2.When troubleshooting, failure to check this connector and Input Op-Amps U1/U2 can result in erroneousconclusions or wasted time.In the event you receive a PSW-D112*, DPS-12, or PSW-D115 Subwoofer with any of the complaints“Dead, or No Output, or Motorboating (Oscillation)”, perform the steps listed below before any furthertroubleshooting takes place:1)Unplug all cables, lay the subwoofer on a padded surface.2)Remove all Philips screws around the outer perimeter of the amplifier faceplate.3)Remove amplifier assembly; you should be able to remove the amplifier far enough out of the cabinet to service itwithout removing other connecting wires.4)Locate the ribbon cable connector between the premamp PCB and the main PCB. See illustration.5)Desolder the connection on that cable where the cable attaches to the premamp PCB; to access, you may have tocarefully remove or scrape adhesive from this area.6)Cut approximately ” of ribbon from the cable end, then strip enough of the insulator on each of the six conductorsto allow re-connection. Take care not to damage the wire. Solder the cable end back onto the premamp PCB.7)Test the unit by applying a signal from a music source, adjust the volume to a moderate level and confirm theoriginal problem has been corrected.8)If not, troubleshoot Op-Amps U1 and U2 by standard methods; replace if defective:Make sure plus/minus voltages are present on pins 4 and 11.Make sure DC voltages are not present at output pins 1,7,8,14. (See schematic)Apply a signal and confirm there is an output on pins 1,7,8,14. (See schematic)9)Replace the amplifier assembly back into the cabinet; replace the screws.* Rev 0 of the PSW-D112 subwoofer is easily identified by the presence of Center channel Input and Output connectorsIMPORTANT SERVICE NOTES: When testing thePSW-D or DPS Series amplifier, a load mustalways be connected to the output terminals,whether the woofer, or a 4 to 8 ohm resistive load.All AC powered test instruments (meters,oscilloscopes, etc.) must have a floating ground,i.e. be connected to an isolation transformer.1617Amplifier/SubwooferPSW-D112/DPS-12CABINET EXPLODED VIEWSSCREWS (12)SCREWS (8)JBLLogo#200512FEET#200582CABINETNOT FORSALE12 WOOFER#200700AMPLIFIERASSEMBLYSCREWS (12)SCREWS (8)FOOT PART 1#200670FOOT PART 2#200870CABINETNOT FORSALE12 WOOFER#200700AMPLIFIERASSEMBLYDPS-12CABINET ASSEMBLYPSW-D112CABINET ASSEMBLYGRILLE#200710CONTROLPANEL#200760VOLUME KNOB#70313VIDEO CONT.BUTTON#70314VIDEO CONT.SWITCH#7015218Amplifier/SubwooferPSW-D112/DPS-12AMPLIFIER EXPLODED VIEW5544332211AABBCCDDEEFFGGPSW-D112/DPS-12Rev0(PSW-D112 shown here)Amplifier AssemblyExploded Viewshown here131412171511619725164810S64AMI19Amplifier/SubwooferPSW-D112/DPS-12PSW-D112/DPS-12 MECHANICAL PARTS LISTRef. # Part NumberDescriptionQtyPSW-D112/DPS-12170302Knob, 3 pcs on DPS-12, 2 pcs on PSW-D112270312Faceplate PSW-D112270311Faceplate DPS-12370316Amp PCB support470150Phase switch1(also DPS-12 Video Contour switch)570151Power switch Safety part670170#4x0.5 Screws to secure input jack770171#10 x 1 Screw machine screwBolts for transformer 4 per unit870172#10 keps Nuts for transformer 4 per unit4970173#6 x 0.5 Screws for fuse PCB 2per unit21080116Transformer #4632 Safety part11180117250V, 2.0A, T type SLO BLO fuse Safety part1280118Preamp board, D112,D115,DPS12 Safe