JBL-JSR400-sur-sm 维修电路原理图.pdf

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1、JSR-400Dolby Pro-LogicAudio/VideoReceiverSurroundJBL Consumer Products Inc.250 Crossways Park DriveWoodbury, N.Y. 117971-800-336-4JBL in the USAA Harman International CompanyRev A 10/99SERVICE MANUALTheis part of theSystemJSR-400ARC CinemaIIRadioFans.CN 收音机爱 好者资料库2Dolby Pro-Logic?A/V ReceiverJSR-400

2、JSR400 TABLE OF CONTENTSCOVER.1TABLE OF CONTENTS.2ARC CINEMA II SPECIFICATIONS.2SPECIFICATIONS.3CONTROLS AND THEIR FUNCTION.7REAR PANEL CONNECTIONS.9DISASSEMBLY PROCEDURES .10CIRCUIT DESCRIPTION.13JSR400 PACKING .17JSR400 BLOCK DIAGRAM.18JSR-400 UNIT EXPLODED VIEW .19JSR-400 ELECTRICAL PARTS LISTS .

3、20SIMPLE TROUBLESHOOTING.26MORE COMPLEX TROUBLESHOOTING .27TUNER ALIGNMENT.29JSR-400 MAIN PCB .31JSR-400 CONTROL PCB.32JSR-400 TUNER PCB .33JSR-400 SUB PCBs .34WIRING DIAGRAM.35INTEGRATED CIRCUIT DIAGRAMS 1-5 .36-40TRANSISTOR DIAGRAMS.41JSR-400 SCHEMATIC DIAGRAMMAIN BOARD.42JSR-400 SCHEMATIC DIAGRAM

4、CONTROL BOARD.43JSR-400 SCHEMATIC DIAGRAMPOWER SUPPLY/VIDEO/TONE/HEADPHONE/VOLUME PCBs.44JSR-400 SCHEMATIC DIAGRAMTUNER BOARD.45ARC CINEMA II SPECIFICATIONSTotal System Output . . . . . . . . . . 280 wattsFront Channels:. . . . . . . . . . . . 50 watts x 3 .1% THD;Surround Channels:. . . . . . . . .

5、 . . 25 watts x 2 .1% THD;Subwoofer:. . . . . . . . . . . . . . 80 watts x 1 1% THDSystem Frequency Response . . . . . . (6dB) 45Hz 20kHzInput Impedance . . . . . . . . . . . . 20k ohmsInput Sensitivity. . . . . . . . . . . . 220mVReceiverDimensions (H x W x D). . . . . . . . 4-5/8 x 10-1/4 x 9-3/4

6、inches. . . . . . . . . . . . . . . . . . . . 117 x 260 x 248mmWeight. . . . . . . . . . . . . . . . 5 lbs/2.3 kgOccasional refinements may be made to existing products without notice, but will always meet or exceed originalspecifications unless other-wise stated.RadioFans.CN 收音机爱 好者资料库3Dolby Pro-Lo

7、gic?A/V ReceiverJSR-400SPECIFICATIONSMeasuring methods are based on IHF and IEC standard 268-3Measurement conditions, unless otherwise noted:Output resistive load = (8) ohms / Both channels drivenTone (Base, Treble), Balance, EQ control : Center Position, Other SWs : OFFNominal input level: 5mV for

8、MM, 0.5mV for MC, 500mV for general purpose inputsPower figures should be kept minimum 10 minutes between 15 and 35?CTerminator: 100 ohm for MC, 1kohm for MM for MM and general purpose inputsFilter: IHF-A filterR/O = Rated OutputPower Supply: 120V, 60HzFront Amp SectionNO.DESCRIPTIONINPUTFREQ.REMARK

9、UNITLIMIT L/RNOMINAL L/RLR1INPUT SENSITIVITYCD1kHzmV200?30200?30MM1kHzmVMC1kHzmVMIC1kHzmV2CHANNEL BALANCECD1kHzR/O TO -40dBdB?3?21kHz4RESIDUAL NOISECD1kHzVOL min.mV? 11kHzVOL max.mV5TOTAL HARMONICDISTORTIONCD (500mV)(40)HzR/O / 1W%? 1?0.31kHzR/O / 1W%? 1?0.3(20)KHzR/O / 1W%? 1?0.36CONTINUOUS AVERAGE

10、POWERCD(40)Hz(8)ohmsW50521kHz(8)ohmsW5052(20)KHz(8)ohmsW50527S/N RATIO, IHF-A FILTERCD (500mV)1kHzR/OdB?65? 701kHz1WdBMM (5mV)1kHzR/OdB1kHz1WdBMC (0.5mV)1kHzR/OdB1kHz1WdB8CHANNEL SEPARATIONCD (500mV)100HzR/O-3dBdB1kHzR/O-3dBdB? 45? 5510kHzR/O-3dBdB? 40? 459FUNCTION CROSSTALKTAPE?AUX1/10kHzR/O-3dBdB?

11、 60/40?65/45AUX?TAPE1/10kHzR/O-3dBdB? 60/40?65/45MM?CD1/10kHzR/O-3dBdB10FREQUENCY RESPONSE(-3DB)CD (500mV)1WHzkHz4020k2050k11TONE CONTROL, ?(10)dBCD100Hz1WdB? 10? 2? 10? 110kHz1WdB? 10? 2? 10? 14Dolby Pro-Logic?A/V ReceiverJSR-400Rear Amp SectionNO.DESCRIPTIONINPUTFREQ.REMARKUNITLIMIT L/RNOMINAL L/R

12、1POWER OUTPUT 0.9% THDCD1kHz(8) ohmsW? 50?522TOTAL HARMONICDISTORTIONCD1kHz1W%? 1?0.73S/N RATIODOLBYIHF-A FILTER, THEATERHALLSTADIUMCHURCHCDR/OdB? 60?65CDR/OdBCDR/OdB? 60?65CDR/OdBCDR/OdB4FRE RES. (ONLY DOLBY)? 3dBCD1kHz1WHzkHz1006807Center Amp SectionNO.DESCRIPTIONINPUTFREQ.REMARKUNITLIMIT L/RNOMIN

13、AL L/R1POWER OUTPUT 0.9% THDCD1kHz(8) ohmsW? 50?522TOTAL HARMONICDISTORTIONCD1kHz1W%? 1?0.33S/N RATIO IHF-A FILTERCDR/OdB? 73?784FRE RES.LARGEDOLBY MODESMALLCD1WHzkHz5015k3017kCD1WHzkHz12015k10017kVideo SectionNO.DESCRIPTIONINPUTFREQ.REMARKUNITLIMIT L/RNOMINAL L/R1OUTPUT LEVEL at 75OHMSVCR1 (1Vp-p)1

14、MHzVp-p1?0.21?0.12FREQUENCY RESPONSEVCR1 (1Vp-p)1MHzHzMHzDC6DC6.33S/N RATIOVCR1 (1Vp-p)1MHzdB40454CROSS TALKVCR1 (1Vp-p)1MHzdB40455Dolby Pro-Logic?A/V ReceiverJSR-400TUNERMeasuring methods in conformity with IEC standard 315Measurement conditions FM:Radio frequency = 98.1 MHZ,Audio frequency = 1 kHz

15、Reference level = 1mV on ( 75ohms, 300ohms)Test Point: TP 1 = 90.1MHz, TP 2 = 98.1 MHz, TP 3 = 106.1 MHzFilter = B.P.F at STEREOPower Supply: 120V, 60HzFM SectionNO.DESCRIPTIONUNITLIMIT L/RNOMINAL L/R1TUNING RANGELOW HIGHSTEPAUTO/Man.MHz87.5107.9MkHz1002USABLE SENSITIVITYTP 1S/N = 30dBTP 2TP 3dBf? 2

16、3.2?17.2dBf? 23.2?17.2dBf? 23.2?17.23FULL LIMITING SENSEOUTPUT =-3dBdBf? 15.2?12.24AUTO STOP LEVELdBf31.2? 531.2?35S/N RATIOMONOIHF-A FILTERSTEREOdBf? 65?72dBf? 59?706TOTAL HARMONIC DISTORTIONMONOSTEREO%? 1?0.5%? 1.5?1750dB QUIETING SENS.MONOSTEREOdBf? 23.2?20.2dBf? 45.2?43.28CHANNEL SEPARATION250Hz

17、1kHz6.3kHzdBf? 20?40dBf? 26?45dBf? 18?359FREQUENCY RESPONSE AT ? 1.5dBHz3012.5k2015k10SPURIOUS RESPONSEdB? 60?7011IF REJECTIONTP 1dB? 60?7012IMAGE REJECTIONTP 3dB? 30?4013AM REJECTION RATIOdB? 25?3014ALTERNATIVE CH SELECTIVITY? (400)KhZdB? 55?6515OUTPUT LEVEL MONOmV500? 200500? 1506Dolby Pro-Logic?A

18、/V ReceiverJSR-400Measuring methods in conformity with IEC standard 315Measurement conditions AM - MW: Radio frequency = 1000/999kHzAudio frequency = 400HzLW: Radio frequency = 207kHzAudio frequency = 400HzReference level = 5mV/m, 10mV/m on 50ohmsModulation = 30%Test Point: MWTP1 = (600)kHzTP2 = (10

19、00)kHzTP3 = (1400)kHzLWTP1 = 162kHzTP2 = 207kHzTP3 = 252kHzAM SectionNO.DESCRIPTIONUNITLIMIT L/RNOMINAL L/R1TUNING RANGELOW HIGHMWLWSTEPAUTO/Man.kHz5201710kHzkHz102USABLE SENSITIVITYMWTP 1TP 2S/N = 20dBTP 3LWTP 1TP 2TP 3uV/m? 800?500uV/m? 800?500uV/m? 800?500uV/muV/muV/m3S/N RATIOMWLWdB? 35?45dB4TOT

20、AL HARMONIC DISTORTION%? 1.5?1.05OVER LOAD DISTORTION 5mV 80% MOD%? 10?56FREQUENCY RESPONSE at -6dBMWLWHz1002k802.3kHz7SELECTIVITY 10KhZ/9KhZMWLWdB? 20?25dB8AGC FIGURE OF MERITINPUT 100mVdB? 40?459IMAGE REJECTIONMW = TP 3LW = TP 3dB? 30?35dB10FREQUENCY RESPONSE AT ? 1.5dB%? 15?10%? 15?1011AUTO STOP

21、LEVELMWLWuV/m800(? 6dB)800(?5dB)uV/m12TUNED LEVELMWLWuV/m800(? 6dB)800(?5dB)uV/m13OUTPUT LEVELmV120? 40120?307Dolby Pro-Logic?A/V ReceiverJSR-400CONTROLS AND THEIR FUNCTIONDOLBY SURROUNDP R OL O G I C?JSR-400 AV RECEIVERUPDOWNTUNINGAUTOSTEREOPMWIDEMATRIXHALLNORMALFMAMSIMULATEDPHANTOMBYPASSTUNEDDELAY

22、CENTERREARTIMEkHzMHzAUTOMUTEMEMORYDOLBY SURROUNDP R OL O G I CDOLBY 3 STEREOCENTER MODEPRESETSPEAKERS OFFmSdBchMODECENTERTONETESTBYPASSFM/AMCDTAPEVCR1VCR2AUX/TVPRO LOGIC3 STEREOHALLDOLBYDOLBYLRMINMAXBALANCEBASSMAXMINTREBLEVCR 2AUDIOLRHESDPHONESSPEAKERSVIDEOPOWER (STANDBY)VOLUME45678910 11 12 13 14 1

23、5 16 1718201913252422212321. Power: Once the unit is plugged in, it is in eitherSTANDBY or ON. This button switches from STANDBY toON, or can be operated from the remote control. In eitherstate the receiver is NOT disconnected from the AC mainpower supply.2. LED: In the STANDBY mode the LED is RED,

24、when ONthe LED is Off.3. Speaker Switch: Press this button to mute the output toall speakers.4. Headphone Jack: Normally the speaker switch (#3) ispressed to mute speaker output for headphone listening.5. Video 3 Input: Audio or Video sources connected tothese jacks may be selected by pressing the V

25、CR2 button(16).6. Dolby Pro-Logic: Press this button to engage DolbyPro-Logic sound decoding. All five speakers are active inthis mode.7. Dolby 3 Stereo: Press this button to engage Dolby 3Stereo; only the front and center loudspeakers are active inthis mode.8. Hall: Press this button to create a su

26、rround image from a2 channel recording.9. Center Mode: Press this button to change the centerspeaker effect between NORMAL, WIDE and PHANTOMwhen in the surround modes.10. Test Tone: The test tone is used to calibrate the volumesettings of the speakers.A static noise will be heardcycling, in order, f

27、rom the front left, center, right, and bothsurround speakers. When the test tone is cycling, you mayadjust the volume level of the center and surround speakerswith the CENTER LEVEL or REAR LEVEL buttons on theremote control. Press the Test Tone button once more toreturn to normal mode.NOTE: The test

28、 tone is used to calibrate the performance ofthe system.When listening to an actual recording, thevolume level of the surround channels is generally muchlower than that of the front channels. In fact, when listeningto a movie, virtually all of the dialogue and a substantialamount of the effects are

29、reproduced through the centerchannel.11. By Pass: Press this button to engage traditional 2channel Stereo listening.Only the front speakers will beactive.12. AM/FM Tuner Selector: Press this button once toselect the tuner. Press it again to switch between AM andFM.13. CD: Press this button to select

30、 the CD player.14. Tape: Press this button to select the Cassette tapeplayer.15. VCR1: Press this button to select a VCR or video sourceconnected to the rear panel on the unit.8Dolby Pro-Logic?A/V ReceiverJSR-40016. VCR2: Press this button to select a VCR or video sourceconnected to the front panel

31、on the unit.17. AUX/TV Input: Press this button to select the sourceconnected to the TV Input.18. Balance: This knob adjusts the balance between thefront left and right speakers.19. Bass: This knob adjusts the tone of low-frequencysounds. Turn it to the right to boost bass frequencies or tothe left

32、to cut bass frequencies.20. Treble: This knob adjusts the tone of high-frequencysounds. Turn it to the right to boost high frequencies or tothe left to cut high frequencies.21. Volume Control: Turn the knob clockwise to increasevolume, counterclockwise to decrease the volume.22. Auto tune: Press thi

33、s button when in the AM/FM modeto direct the receiver to seek only the strongest stationswhen pressing the TUNING button #23.23. Tune: Press this button to manually scan up or downthrough the FM or AM bands.24. Information Display: This display delivers messagesand status indications to help you ope

34、rate the receiver.25. Remote Sensor Window: The sensor behind thiswindow receives infrared signals from the remote control.Aim the remote at this area and do not block or cover it.9Dolby Pro-Logic?A/V ReceiverJSR-400REAR PANEL CONNECTIONS26. AM Antenna: Connect the AM loop antenna suppliedwith the r

35、eceiver to these terminals.27. FM Antenna: Connect the FM antenna supplied withthe receiver to these terminals.28. AUX In: Connect a TV output or any auxiliary audiosource (except for a phonograph) to these jacks.Aphonograph will need a phono pre-amp before beingconnected to these jacks29. CD IN: Co

36、nnect these jacks to the output of a compactdisk player or CD changer.30. Tape In: Connect these jacks to the PLAY/OUT jacks ofan audio recorder.31. Tape Out: Connect these jacks to the RECORD/INPUTjacks of an audio recorder.32. VCR In: Connect these jacks to the audio output jacks ofa stereo VCR.33

37、. VCR Out: Connect these jacks to the audio input jacksof a stereo VCR.34. Video - VCR1: Connect the single input jack to the videooutput jack of a VCR, and the output jack to the video inputjack of the same VCR.35. TV Monitor Video Output: Connect this jack to thestandard (composite) video input of

38、 a TV monitor or videoprojector to view the output of any standard video sourceselected by the receivers video switch.36. Subwoofer Pre-Out: Connect this jack to the line levelinput of a powered subwoofer.If an external subwooferamplifier is used, connect this jack to the subwooferamplifier input.37

39、. Rear Speakers: Connect these terminals to thesurround speakers.38. Main Speakers: Connect these terminals to the frontspeakers.39. Center: Connect these terminals to the center speaker.40. Power Cable: Connect the AC plug to a non-switchedAC wall output.WARNING : TO REDUCE THE RISK OF FIRE ORDO NO

40、T EXPOSE THISAPPLIANCE TONE PAS EXPOSER CET APPPAREILAVERTISSEMENT : AFIN DEVITER LES DANGERSA LA PLUIE NI A LHUMIDITE.DINCENDIE ET DELECTROCUTION,A172E28241Listed(8W)AUDIORLAUXINININCDTAPEOUT75WAMLOOPGNDBAL300WUNBALFMANTENNAINVCR1OUTWOOFERSUBREAR SPEAKERSR(8W)LMAIN SPEAKERSRL(8W)CENTERSPEAKERSR R18

41、0WMONITORVIDEOVCR1INOUTOUTMODEL NO. : JSR-400ELECTRIC SHOCK.RAIN OR MOISTURE.AVIS : RISQUE DE CHOCELECTRIQUE-NE PAS OUVRIRCAUTIONDO NOT OPEN.RISK OF ELECTRIC SHOCKAC120V 60Hz!Northridge,CA USAA HAarman International CompanyHDOLBY PROLOGIC RECEIVERAudio equipmentmust accept any interference received,

42、 including interference that may cause undesiredManufactured under license from Dolby Laboratories Licensing Copration.Dolby,thedouble-D symboland Pro Logic are trademarks of Dolby Laborotories Liencingtwo conditions; (1) The device may not cause harmful interferance, and (2) This deviceThis devices

43、 complies with Part 15 of the FCC rules. Operation is subject to the followingCoporation.operation.R27 262829 30 31 32 33 34 353637 38394010Dolby Pro-Logic?A/V ReceiverJSR-400DISASSEMBLY PROCEDURESJBLJBLSTEP 1.REMOVING THE TOP COVER1. REMOVING THE SCREWS 19STEP 2.REMOVING THE BOTTOM COVER1. REMOVING

44、 THE SCREWS 18STEP 3.REMOVING THE FRONT PANEL1. REMOVING KNOB VOLUME MAIN FROM FRONT PANEL2. REMOVING THE SCREWS 11211443322966688555894321121110777KNOB VOLUME MAIN11Dolby Pro-Logic?A/V ReceiverJSR-400DISASSEMBLY PROCEDURES (continued)DINCENDIE ET DELECTROCUTION,A LA PLUIE NI A LHUMIDITE.AVERTISSEME

45、NT : AFIN DEVITER LES DANGERSNE PAS EXPOSER CET APPPAREILDO NOT EXPOSE THISAPPLIANCE TOWARNING : TO REDUCE THE RISK OF FIRE ORANTENNAININRLAUXCD!DOLBY PROLOGIC RECEIVERA HAarman International CompanyNorthridge,CA USAMODEL NO. : JSR-400OUTINOUTINAUDIOWOOFERSUBOUTVIDEOTAPELOOPAMVCR1INVCR1FMGND75WUNBAL

46、BAL300WMONITOROUTHREAR SPEAKERS (8W)RLSPEAKERSCENTER(8W)MAIN SPEAKERSRL(8W)Audio equipmentE28241ListedA172RRISK OF ELECTRIC SHOCKDO NOT OPEN.ELECTRIQUE-NE PAS OUVRIRAVIS : RISQUE DE CHOCRAIN OR MOISTURE.ELECTRIC SHOCK.CAUTIONThis devices complies with Part 15 of the FCC rules. Operation is subject t

47、o the followingtwo conditions; (1) The device may not cause harmful interferance, and (2) This devicedouble-D symboland Pro Logic are trademarks of Dolby Laborotories LiencingManufactured under license from Dolby Laboratories Licensing Copration.Dolby,themust accept any interference received, includ

48、ing interference that may cause undesiredCoporation.operation.180WAC120V 60HzSTEP 4.REMOVING THE FRONT CHASSIS1. REMOVING THE SCREWS 15STEP 5.REMOVING THE REAR PANEL1. REMOVING THE SCREWS 118STEP 6.REMOVING THE TUNER PCB1. REMOVING THE SCREWS 16558 944332211112 13 14151617181110712Dolby Pro-Logic?A/

49、V ReceiverJSR-400DISASSEMBLY PROCEDURES (continued)STEP 8.REMOVING THE VIDEO PCB1. REMOVING THE SCREWS 12STEP 9.REMOVING THE MAIN PCB1. REMOVING THE SCREWS 13STEP 7.REMOVING THE POWER PCB1. REMOVING THE SCREWS 1413311422213Dolby Pro-Logic?A/V ReceiverJSR-400CIRCUIT DESCRIPTION1. Surround CircuitsThi

50、s model incorporates a surround processor circuit.Fig. 1 is a block diagram of the surround processor circuit. The microprocessor transfers the data to the Dolby Pro-Logicdecoder and Time Delay Device to operate the circuits in each mode.1) BYPASSSet to this mode to listen to ordinary stereo sound.