Jbl-PB10 actsub电路图.pdf

PowerBass Series PB10 Powered Subwoofer Service Manual JBL Consumer Products 250 Crossways Park Dr. Woodbury, New York 11797 Rev7 2/2004 RadioFans.CN 收音机爱 好者资料库 PB10 TABLE OF CONTENTS Safety Information .3 Basic Specifications .4 Detailed Specifications .5 Controls and their Function .6 Speaker Connection .7 Operation .10 Troubleshooting.11 Test Setup and Procedure .12 Service Bulletin JBL 2001-03 .13 Service Bulletin JBL 2001-04 .14 Tech Tip JBLTT2003-04.17 Exploded View/Packaging .18 Amplifier Exploded View .19 Amplifier Faceplate/Access.20 Integrated Circuit Diagrams.21 Testing Procedures.22 Block Diagram Revision 229 Electrical Parts List (PCB version 6.3 7.0) .30 Electrical Parts List (PCB version 7.2) .34 Electrical Parts List Revision 2.38 Printed Circuit Boards (PCB version 6.3 7.0) .41 Printed Circuit Boards (PCB version 6.4). .44 Printed Circuit Boards (PCB version 7.2) .45 Schematics Version 1 Preamp (PCB version 6.3 7.0) .48 Power Amp (PCB version 6.3) .49 Power Amp (PCB version 7.0).50 Preamp (PCB version 7.2). .51 Power Amp (PCB version 7.2) .52 Schematics Version 2.53 PB10 DIFFERENCES IN REVISION 1 AND REVISION 2 REVISION 1REVISION 2 Amplifier has main power switch Amplifier faceplate says “Made in Canada” Amplifier serial number starts with “AM”Amplifier serial number starts with “HA” Black (or silver) potted, non-serviceable output moduleOutput transistors in the open, on a large black heatsink Large plastic cup enclosing the rear of the amp assembly Main PCB, bottom, solder-side contains all SMD devices “Made in Mexico” label on outer part of cabinet BOTH VERSIONS OF THESE AMPLIFIERS ARE NOT CONSIDERED INTERCHANGEABLE; THEY ARE NOT A DROP-IN REPLACEMENT IN THE CABINET OF THE OTHER VERSION. RadioFans.CN 收音机爱 好者资料库 PB10 3 Warning Any 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! Caution Early revisions of the unit did not have a power switch. Hazardous voltages are resent within the unit whenever it is plugged in. Before 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. Leakage/Resistance Check Before returning the unit to the customer, perform a leakage or resistance test as follows: Leakage Current. Note there is no power switch on early revisions of 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 0.5mA, 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. Critical Components All components identified with the IEC symbol in the parts list and schematic diagram designate components in which safety can be of special significance when replacing identified with. Use only the replacement parts designated in the parts list or parts with the same rating of resistance, wattage or voltage. SAFETY INFORMATION List of Safety Components Requiring Exact Replacements Revision 1Revision 2Description F1 - 80114093-205209-300Line Fuse Slo Blo 1.25A 5x20mm PWRCORD083-041802-009250V UL approved SPT-2 80105or better with polarized plug, UL approved wired with the hot side to fused side. Use with factory replacement panel strain relief (70305) only. TRX042-010052-003Power Transformer. 80135Use only factory replacement. BR RECTBR1Bridge diode. Use only 50100052-400080-000factory replacement. C1,2 C6,84700uF 50V electrolytic 30706034-470745-200filter caps. Be sure replacement part is at least the same working voltage and capacitance rating. Also the lead spacing is important. Incorrect spacing may cause premature failure due to internal cabinet pressure and vibration. C10Does not apply10uF, 100 volt NPE low 30712df radial. (On Power amp PCB) S64AMIDoes not applyPower output module. 60301Use only factory replacement Faceplaten/aUse only factory 70325replacement Rear Amp Cover063-531808-000Use only factory replacement InductorDoes not applyCMC - Use only factory 80100replacement InductorDoes not applyL1 - Use only factory 80101replacement Does not applyInductorL1 - Use only factory 043-560200-000replacement Does not applyInductorL2 - Use only factory 043-300101-000replacement Does not applyInductorL3 - Use only factory 043-700101-000replacement Does not applyInductorL4 - Use only factory 043-324300-000replacement RadioFans.CN 收音机爱 好者资料库 PB10 4 Output Power150 watts RMS Driver10 Woofer Frequency Response27Hz Low Pass Frequency setting InputsLine Level (option: LFE); Speaker Level OutputsSpeaker level fixed frequency 150Hz Low-Pass FrequencyVariable from 50Hz 150Hz High-Pass Frequency150Hz when using Speaker Level Output Dimensions (H x W x D)14 x 14 x 15 356mm x 356mm x 381mm (with feet) 16 x 14 x 15 406mm x 356mm x 381mm Weight35 lb/15.9kg Refinements may be made on occasion to existing products without notice but will always meet or exceed original specifications unless otherwise stated. PowerBass is a registered trademark of JBL, Incorporated. 00232-1 BASIC SPECIFICATIONS PB10 Subwoofer PB10 5 JBL PB 10 150W Powered Sub Amp LINE VOLTAGEYes/NoHi/Lo LineNom.Unit US 120vac/60HzYes108- 132120Vrms EU 230vac/50- 60HzYes207- 264230Vrms ParameterSpecificationUnitQA Test Limits Conditions Amp Section Type (Class AB, D, other)Dn/an/a Load Impedance (speaker)4Ohmsn/aNominal Rated Output Power150Watts701 input driven THD Rated Power0.3%122k filter THD 1 Watt0.1%0.522k filter DC Offset10mV- DC20 Speaker Outputs Damping factor50DF35 Input Sensitivity Input Frequency50Hz50Nominal Freq. L V- ; +/- 15V voltage at the module Check fuse transformer, CMC, rectifier, C1 and C2 Use scope to check switching frequency from the load 100KHz +/- 10% , 1Vpp Check input of module wrt GND = 0V D.C. Power up with no signal input LED RED OK OK OK OK OK OK OK OK Check C32 and Pre- AMP Use scope to check O/P at module wrt GND 80Vpp square wave shown Check L1, L2, C10, C11 Check 6V at the module wrt V- =5.75V Replace Module MODULE OK END Check D3,D4, R3, Q10, Q11, Q12 and SCP Check transformer, CMC, rectifier, C1, C2, D1, D2, R1(A,B,C), R2(A,B,C) Check S/D volt- age at the module wrt V- =5.1V Check D5,D6, R6,R7(A,B,C) Resistance check (no load) between V+ V- , V+ O/P,V- O/P and O/P to GND is 10K PB10 26 PB10 Testing Procedure (Cont.) (Revision 2 Only) A. Power Amp Section Resistance Check Resistance from S+ (SPK O/P) to GND should be 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 UpLED RED With a 5mV signal to Low level input, LED should change to GREEN -Voltage measurements (DVM) OP AMP LEDP-U4(1)P-U4(7) RED0Vrms8VDC GREEN6.3Vrms-10.7VDC 3. D.C. Operation -Voltage measurements (DVM) on CLASS D POWER AMP BetweenV+Q4(E)Q1(C)Q10(C)U7(1)U7(2)U7(4)U7(6)U7(7)U7(8) And This Point GNDV-GNDGNDGNDGNDGNDGNDGNDGND Get this Reading 45.9V0V-45.9V0V-45.9V-45.7V-45.5V0V0V4.7V 4. Check Switching Frequency Oscilloscope - USE THE PROBE TIP TO U6(7) TO GND Reading 100kHz +/-10%,22Vp-p B. Pre Amp Section Line Level Input Sensitivity -Set upTurn level, XOVER FREQ POT Fully CW and LFE switch off Generator Set at 100mV50Hz Signal to Line level input PB10 27 PB10 Testing Procedure (Cont.) (Revision 2 Only) - Voltage measurements OP AMP U2(1)U2(14)U2(8)U3(7)U3(1)U3(14)U3(8)U5(7)U5(1) SPEAKER O/P 133.6mV200.2mV245.9mV314.8mV314.9mV350mV1.67V1.452V2.098V15.3V 2. High Level Input Sensitivity -Set upTurn level, XOVER FREQ POT Fully CW and LFE switch off Set Generator at 1.15V50Hz Signal to High level input -Voltage measurements 15.3V at speaker output 3. Low-Pass -Set upSet Generator at 100 mV100Hz Signal to Line level input Measure voltage at S+ speaker output -Voltage measurement XOVER FREQ. SettingOutput CW10.72V CCW2.165V 4. LFE -Set upSet Generator at 100mV200Hz Signal to Line level input Measure voltage at S+ speaker output LFE switch SettingOutput Normal2.9V LFE7.62V See flow chart next page for diagnostics. PB10 28 PB10 Testing Procedure (Cont.) (Revision 2 Only) PB10 POWER MODULE TESTING FLOW CHART - REVISION 2 ONLY CAUTION : 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 no no yes yes no no yes yes START Check +/- 15V- MOD +/- 15V voltage at U 6(8),U6(4) Discharge C37, Check fuse transformer, L4, rectifier, C6 and C8 Use scope to check switching frequency U6(7) 100KHz +/- 10% , 22Vp- p Check Q4(E) TO V- = 0V D.C. Power up with no signal input LED RED OK OK OK OK OK OK OK OK Check MUTE(+8V) and Q24,Q25,Q26 Use scope to check O/P U7(6) and GND 90Vp- p square wave shown Check L2,L3,C71,C72, C73,C74 I/P:10mv/50HZ Check +15V/SW Q4(E) TO V- 15V Replace Q18,Q22 CLASS D AMP OK END Check U7,Q16,Q17, Q20,Q21,R87, D26,D35,C64 Check FB1,FB2,C45, C50,C60,C63, R81,R82 Check U7(1) = - 33V Check MUTE(- 10.7V), And Q24,Q25,Q26 Resistance check (no load) between V+ V- , V+ O/P,V- O/P and O/P to GND is 10K 29 PB10 Block Diagram Revision 2 Only Rin Lin Rout Lout DIF. AMPSUMMI NG AMP VOLUME CTRL PHASE CTRL SWITCH HPF 18dB/Octave12dB/Octave HPFLPF 12dB/Octave12dB/Octave LPF Variable SUMMI NG AMP LIMITER / LPF MUTE DC OFFSET PROTECTION THERMAL PROTECTION CURRENT PROTECTION LINEAR POWER SUPPLY * FUSE MUTE SIGNAL SENSE ATO SIGNAL SENEING EXTERNAL LED INDICATORS CONTROLLED REGULATOR CLASS D AMPLIFIER +15V SW MUTE OUTPUT-RELAY 4 OHMS LFE NORMAL NOTE : 120 VAC T1.25A-250V 230 VAC T0.8A-250V SPEAKER LEVEL INPUT Line Level Input F 1 E D 32 C B A 1234 768 F E D 5 RevNoRevision note 67 C B Checked 8 DateSignature A PB10 30 PB10 Electrical Parts List (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part #Ref. DesignatorDescription Semiconductors 60301MODULES53S53AMI amp module 60102U1TLO64Quad OpAmp 50100BR RECTRS6046AMP 50105D11N4744A15V1w Zener 50112D101N5242B12V.5w Zener 50104D111N4148Sig Diode 50112D121N5242B12V.5w Zener 50104D131N4148Sig Diode 50104D141N4148Sig Diode 50105D21N4744A15V1w Zener 50101D31N5256B30V.5w Zener 50104D41N4148Sig Diode 50113D51N4735A6.2V1W 50107D61N5234B6.2V.5w Zener 50104D71N4148Sig Diode 50104D81N4148Sig Diode 60157Q12N545725VN-chnl FET 60154Q10MPSA56120VPNP 600mA 60154Q11MPSA56120VPNP 600mA 60156Q122N440140VNPN 600mA Capacitors 30706C14700uF50V+80 / -20Electrolytic 105C 30712C1010uF100V0.2BP/NP Electr DF<.1 30502C11100nF50V0.2mono ceramic 30706C24700uF50V+80 / -20Electrolytic 105C C20NOT USED 30502C21100nF50V0.2mono ceramic 30502C22100nF50V0.2mono ceramic 30526C24220nF50V0.1mono ceramic 30529C251n5F50V0.1mono ceramic 30508C2610nF50V0.1mono ceramic 30513C273n3F50V0.1mono ceramic 30502C3100nF50V0.2mono ceramic 30714C3210uF35V+80/-20Electrolytic 30715C4010uF16V+80/-20Electrolytic 30716C411uF16V+80/-20Electrolytic 30717C42100uF16V+80/-20Electrolytic 30702C6100nF50V0.2mono ceramic 30505C7A100nF100V0.2mono ceramic or film 30505C7B100nF100V0.2mono ceramic or film CWNOT USED CZNOT USED PB10 31 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part #Ref. DesignatorDescription Resistors R100NOT USED 40105R10A0.1 ohms.5W0.05metal 40105R10B0.1 ohms.5W0.05metal 40105R10C0.1 ohms.5W0.05metal 40420R111k.25W0.05carbon 40420R121k.25W0.05carbon 40417R1347k.25W0.05carbon 40718R143k3.25W0.05carbon 40406R15100k.25W0.05carbon 40719R1A2k21W0.05metal 40719R1B2k21W0.05metal 40719R1C2k21W0.05metal 40405R214K7.25W0.05carbon 40720R2242K2.25W0.01metal 40721R23237k.25W0.01metal R24NOT USED R25NOT USED 40722R266k8.25W0.05carbon 40723R272k22W0.05metal 40110R28732 ohms0.5W0.01metal 40110R29732 ohms0.5W0.01metal 40719R2A2k21W0.05metal 40719R2B2k21W0.05metal 40719R2C2k21W0.05metal 40702R36M8.25W0.05carbon 40723R302k22W0.05metal 40417R3147k.25W0.05carbon 40417R3247k.25W0.05carbon 40427R3323k7.25W0.01metal 40724R348k87.25W0.01metal 40725R415k0.5W0.01metal 40420R401k.25W0.05carbon 40701R411000k.25W0.05carbon 40409R4210k.25W0.05carbon 40701R431000k.25W0.05carbon 40406R44100k.25W0.05carbon 40415R45470K.25W0.05carbon 40701R461000k.25W0.05carbon 40409R4710k.25W0.05carbon 40409R4810k.25W0.05carbon 40726R4915k.25W0.05carbon 40412R533k2.25W0.01metal 40427R502k2.25W0.05carbon 40111R647 ohms.25W0.05carbon 40728R7A5k61W0.05metal 40728R7B5k61W0.05metal 40728R7C5k61W0.05metal 40729R8A4k71W0.05metal PB10 32 PB10 Electrical Parts List (Cont.) (Revision 1 Only) PB10 POWER AMP section of PCB Version 6.3. Part #Ref. DesignatorDescription 40729R8B4k71W0.05metal R9NOT USED Miscellaneous 80101L1110uHGapped E-core choke 80102L22.2uH2.2uH ferrite bead L30-R Jumper L40-R Jumper 80100CMC2m2H5 Amp0.052.2mH choke 108326LED HarnessMOLEX 2FEMALE 80135TRXMCI 5024100VAConc WndPower Transformer 50106On Harness2 Clr LEDT 1 3/4 Type 50106On Harness2 Clr LEDT 1 3/4 Type 70322LED PCB socketMale PCB LED socket 801143AG FUSE1.25A SloBloGlass 703240.187 Tabs70.187 PCB fastons 70323PCB-mount Fuse Holders2PCB fuse clips 70325PB10 faceplatePB10 faceplate 80105Power cordPower cord 70305Strain reliefStrain relief PB10 PREAMP section of PCB Version 6.3. Part #Ref. DesignatorDescription Semiconductors 60100U1LM324LM324 op amp 60100U2LM324LM324 op amp Capacitors Film Caps may be used in any position EXCEPT C1, C2 30707C1200uF5