JBL-ESC350-sur-sm1 维修电路原理图.pdf

OpenCDRandomRepeatAuto TuneTVAM/FMTape/AuxStereo/MonoRearSpeakers-+Bass-+TrebleSurround ModeTuner PresetsDeleteAutoAddPowerVolumeSkipSearchTuneSOURCEDolby Pro-Logic SurroundProcessor/CD Player/Tuner(Part of the ESC350 & 550 Systems)JBL Consumer Products Inc.250 Crossways Park DriveWoodbury, N.Y. 117971-800-336-4JBL in the USAA Harman International CompanyPart No.: 1112-SOURCE Rev A 4/99SERVICE MANUALSERVICE MANUALRadioFans.CN 收音机爱 好者资料库1Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCELASER BEAM SAFETY PRECAUTIONSRadioFans.CN 收音机爱 好者资料库2Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCESAFETY PRECAUTIONS3Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCETABLE OF CONTENTSLASER BEAM SAFETY PRECAUTIONS.1SAFETY PRECAUTIONS .2TABLE OF CONTENTS.3FEATURES.3SPECIFICATIONS.3SERVICE BULLETIN .4CONTROLS AND THEIR FUNCTION.6CONNECTIONS.7DISASSEMBLY PROCEDURE.8TROUBLESHOOTING .8ADJUSTMENT PROCEDURE.11SOURCE BLOCK DIAGRAM.12SOURCE MECHANICAL EXPLODED VIEW.13MECHANICAL PARTS LIST.14SOURCE PACKING EXPLODED VIEW .15SOURCE ELECTRICAL PART LISTS .16SOURCE MAIN PCB, HEADPHONE PCB, LED PCB22SOURCE CONTROL PCB, LED PCB.23SOURCE CD DECODER PCB, VOLUME PCB .24SOURCE PRO-LOGIC PCB.25SOURCE INTEGRATED CIRCUIT DIAGRAMS .26SOURCE WIRING DIAGRAM .32SOURCE MAIN PCB, PRO LOGIC PCB,CONTROL PCB (SCHEMATIC #1).33CONTROL/DISPLAY (SCHEMATIC #2).34SOURCE (SCHEMATIC #3).35SPECIFICATIONSAMPLIFIER SECTIONSignal to Noise RatioAUX. . . . . . . . . . . . . . . . . . . . 70 dBTHD (1 KHz) . . . . . . . . . . . . . . . . . 0.1%Head Room . . . . . . . . . . . . . . . . 15 dBFM TUNER SECTIONFrequency Range . . . . . . . . . 87.5MHz - 108.0MHz26dB Usable Sensitivity. . . . . . . . . . . . . 10 uVSignal-to-Noise Ratio. . . . . . . . . . . . . . . 55 dBI-F Rejection . . . . . . . . . . . . . . . . . . 65 dBImage Rejection . . . . . . . . . . . . . . . . . 40 dBLimiting (-3 dB) . . . . . . . . . . . . . . . . . 15 uVStereo Separation (1 KHz) . . . . . . . . . . . . 30 dBAM TUNER SECTIONFrequency Range . . . . . . . . . . 520MHz - 1710kHz20dB Usable Sensitivity . . . . . . . . . . . 1000 uV/mSignal-to-Noise Ratio. . . . . . . . . . . . . . . 40 dBI-F Rejection . . . . . . . . . . . . . . . . . . 40 dBImage Rejection . . . . . . . . . . . . . . . . . 20 dBAGC Figure of Merit . . . . . . . . . . . . . . . 40 dBSelectivity. . . . . . . . . . . . . . . . . . . . 25 dBI-F Whistle. . . . . . . . . . . . . . . . . . . . 10 %FEATURES?Built-in CD player with: Dolby Pro Logic surround processor, Dolby 3 stereo, 8x Oversampling?AM/FM tuner with 32 presets, Auto-preset function.SERVICE NOTE: THE ESC350 or 550 SUBWOOFER IS REQUIRED TO TEST ORPLAY “THE SOURCE” IN EITHER SYSTEM.4Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCESERVICE BULLETINService bulletin JBL9704 - July 1997To: All JBL Service CentersModels: ESC550 - The SourceSubject: Surround level changes during CD search modeIn the event you receive a ESC550 system (including the Source) with the complaint that thesurround level (rear channel volume) changes during the CD search mode:Procedure:1) Lay unit face down. Remove the 5 Phillips screws holding the upper & lower case together;separate cases.2) Locate C707 (.022uf 50v cap.) on the main PCB in the bottom case.; replace with 470uf 10velectrolytic capacitor (JBL# 3479347121). Observe polarity; negative terminal should be closest toconnector CN702. It should be possible to cut the original cap off the board and re-solder thereplacement without removal of the main PCB. See drawing.3) Locate solder pads for connector CN702 on the Control PCB in the upper case, near theheadphone jack. Adjacent to the slot cut in the PCB for the 11 conductor cable, solder a .01ufceramic cap (JBL# 3519103935) to pins 8 and 11 on the solder pads. See drawing.4) Re-assemble unit; test as follows:a) Plug in unit, assure all cable and speaker connections are intact. Insert CD of choice.b) Turn power ON to the Source and the Bass550 subwoofer; (display on the Sourceshould now be active).c) Toggle “surround mode” button on front panel or with remote control until “NORMAL”appears.e) Adjust volume (on the Source) so display reads “VOLUME 30”.d) Press PLAY button on the Source or the remote control.e) Press the SEARCH/TUNE button on the Source or the remote control to search up ordown selected track.ModelSerial numberActionCorrectionESC550 (Source)Under 11500Jumps randomly to surround(rear) channel level during CDsearch modeReplace C707 with 470uf 10v cap.Add .01uf cap. to pins 8 & 11 ofCN702ESC550 (Source)11500 and higherModified by factoryNONE REQUIRED5Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCE6Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCECONTROLS AND THEIR FUNCTION1.Volume - Turning this knob clockwise or pressing “+”on the remote will increase the volume. Turning the knobcounter clockwise or pressing “-” on the remote willdecrease the volume.2.Mute - Pressing this button will mute the volume.3.Bass - To raise and lower the bass level press these“+” and “-” buttons. See number “5. Calibration” for thesame adjustments via the remote.4.Treble - To raise and lower the treble level pressthese “+” and “-” buttons. See number “5. Calibration” forthe same adjustments via the remote.5.Calibration - This button operates the calibration ofthe “Bass”, “Treble”, Balance and Center ChannelVolume. Press this button until the desired object forcalibration (e.g. Bass) appears in the display. Press the“+” to increase and the “-” to decrease.6.Play/Pause - Pressing this button will cause the CDto begin playing. Pressing it will a CD is playing willpause the CD until it is pressed again allowing the CD tocontinue playing.7.Skip - Pressing “Back” or “Forward” will cause theCD to skip backward or forward to the next track.8.Scan - Pressing “Back” or “Forward” will cause theCD to scan backward or forward with in the existing trackbeing played. In the tuner mode these buttons tune thereceiver to the next station, backwards or forwards.9.Stop - Pressing this button will the stop the CDoperation.10. Open - This button will open the CD holder door.11. Random - Pressing this button will cause the CD tobe played in random order.12. Repeat - Pressing this button will cause the CD tobegin again when finished.13. AM/FM - This button allows the switching betweenthe AM and FM selection of the tuner. This button alsoswitches the unit back to the tuner mode when in the CD,TV or Aux modes.7Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCECONNECTIONS14. Power - Press this button to turn on the “Source”.NOTE: The Source must be connected to the Bass550subwoofer with its main power switch ON to operate.15. CD Operation - Pressing this button will place the“Source” in CD playing mode.16. TV Operation - Pressing this button will place the“Source” in TV operation mode.17. Tape/Aux - Pressing this button will place the“Source” in Auxiliary mode. This is used when you haveanother input source connected such as a tape player.18. Surround Mode - Pressing this button will allow youto pick between 3 different mode settings: DolbyPro-Logic , Dolby Pro-Logic Phantom mode and2-channel (stereo) mode.19. Tone - This button is used to test and calibrate theperformance of the system.20. Sleep - This Button is used to turn the unit offautomatically after a selected amount of time in 10minute increments up to 90 minutes.21. Auto Tune - Pressing this button, and then pressingeither of the “Search/Tune” buttons (See #8) backward orforward will cause the “Source” to tune to the next strongsignal.22. Stereo/Mono - Pressing this button will play theselected station without any stereo separation.23. Rear Speakers - Pressing this button while listeningin either Surround Modes will turn off the surroundspeakers.24. Tuner Presets - Pressing “Auto” for a full secondwill cause the tuner to scan for strong signals and placeup to 32 stations in memory as preset stations. To moveacross these preset stations press “Skip” (See #7) eitherforward or backward. Pressing “Add” will add to thepreset stations the signal presently tuned. Pressing“Delete” will delete from the preset stations the signalpresently tuned.25. Headphone Jack - Connect a set of headphoneswith stereo mini-phono plug here for private listening.OutTape/AuxPowered SubwooferTVAntennaTunerFrequencyStandardInABUSEuropeFM75AMLooporRL2627282930313226. ESC550 Cable Connector - Plug the ESC550 cablein here and the other end into the Bass550 subwoofer.27. Tape/Aux In/Out - Connect Tape Player or Auxiliaryequipment here. The Output jacks are a Stereo fixedlevel signal.28. (A) TV Connection - Connect the dual RCA stereocable from the output of a television set here.29. (B) TV Connection - Connect the stereo mini-phonejack from the output of a television set here.30. Tuning Frequency - This switch determines whetherthe tuning standard is set for US or European standardreception.31. FM Antenna - This is the connection for the FMcable antenna.32. AM Antenna - This is the connection for the AM loopantenna.8Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCEDISASSEMBLY PROCEDURE1) Lay unit face down. Remove the 5 Phillips screwsholding the upper & lower case together; separate cases.2) Remove as many molex connectors as necessary toseparate case halves; do not mix up connectors duringreassembly. Label if necessary.TROUBLESHOOTINGPROBLEMSOLUTIONDETAILSDISPLAY BRIGHTNESSUNEVENCut out R364 & R367 on CONTROLPCBHUM IN CD MODE(1) Add 470uf 16v Cap. (PRE3952-471)in parallel with ZD401 on MAIN PCB;observe polarity (see drawing)(2) Replace C472 (47uf 16v) with 470uf16v cap. (PRE3952-471)CD PLAY INTERMITTENT -ONE CHANNEL DEADAdd insulated jumper wire near IC802 onCD DECODER PCB pin #67 and padexiting from corner of IC - ground. (seeillustration)CD PLAY INTERMITTENTOn MAIN PCB, cut out C721CD PLAY INTERMITTENT -DISPLAY BLINKINGOn CONTROL PCB,(1) Cut out jumper J015 and R368(2) Replace existing part Q313 with2SD882P NPN Transistor(RHN0882-001)(3) Solder 2 pcs. Diode IN41418(RAD4148-001) in parallel with ZD301(see illustration). Observe all polarities.(4) R364 insert and solder a 2.4 ohmresistor (or two 4.7 ohm QAF0450-479in parallel)(5) R363 insert and solder a 2.2K ohmresistor (QAF0650-222)470 f16VZD401R362J015Q313R363R364R367R362J015Q313R363ZD301ZD301R364R367R3681RB901RB902J004ZD906R363 INSERT2.2K/ W16R364 INSERT2.4K/ W14DELETEJ015 & R368Q313INSERT2SD88212349Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCELCD DISPLAY FLICKERS &CD TRACKS ADVANCE BYTHEM SELVES(1) On the MAIN PCB, add insulatedjumper from R901 (nearest C909)(+) toR902 (nearest jumper J103).(2) Cut out R901 (1 ohm resistor)DISPLAY STAYS ON WHENPOWER OFFOn the MAIN PCB, change R719 (10kohm resistor) to 1k ohm (QAF0650-102)CD FUNCTION (PLAY,TRACK UP) CHANGES TOTV BY ITSELFOn the MAIN PCB, short pins 60 & 61on IC701 together by solder or jumperwire.GOES TO STANDBY MODEBY ITSELF WHEN PLAYINGCDs(1) On the MAIN PCB, add insulatedjumper from R901 (nearest C909)(+) toupper hole in PCB (near C912 andnearest plastic rivet) PCB will have tobe removed and soldered at the rear.(2) Cut copper trace joining JW100 andCN804 at rear of PCB (see illustration)WHEN CD PLAYER WARMSUP IT STOPS IN PLAY MODE(1) On CD DECODER PCB, attach aheatsink (w/adhesive) to IC803(KA9258D)(2) To avoid contact with heatsink on theMAIN PCB, cut TP01 & TP02 shorter(same height as IC101); push downC129, C119, & C120.GAP BETWEEN CD DOORAND TOP OF CABINETFOLLOW DIRECTIONS INILLUSTRATIONRUBBING NOISE DURING CDPLAY MODECD STUCK DURING PLAYMODE10Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCE11Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCEADJUSTMENT PROCEDURETest ConditionsAM(Amplitude Modulation)Function.AMInput Level .74dB/m (5mV/m)Generator.Modulation 30%, 400HzTest ConditionFM(Frequency Modulation)Function.FMInput Level .60dB/m (1mV)Generator .Deviation 22.5kHz, 1kHzStepSignal or Sweep GeneratorReceptionFrequencyOutput IndicatorConnectionAdjustmentAdjust ForConnectionFrequencyAM TUNING VOLTAGE1No Signal1710kHzDC Digital VoltmeterJW84TC10210.5+/-0.1V2No Signal520kHzSame as Step 1L1011.2+/-0.1V3Repeat Step 1 and 2 a few timesAM IF4AM Loop Antenna at adistance of 24 inch (60cm)from the IRT Loop450kHzPoint ofnoninterferenceIF Sweep GeneratorIC101 Pin 12T101Flax and MaxAM TRACKING5Same as Step 4620kHz620kHzRF Sweep GeneratorR180L102Max6Same as Step 41400kHz1400kHzSame as Step 5TC101Max7Repeat Step 5 and 6 a few timesFM IF8To the FM antennaterminals through amatching transformer10.7MHzPoint ofnoninterferenceIF Sweep GeneratorIC101 Pin 12T102T103Flat and MaxCheck VoltageBetweenR109=0V+/-30mVFM MPX9Same as Step 898.1MHz98.1MHzRF GeneratorQ181, Q182 “C”SR03Max Separation12Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCESOURCE BLOCK DIAGRAM13Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCESOURCE MECHANICAL EXPLODED VIEW355458S1065S553525051S11624957S115556S5S12S9S5598S4S547S5644342484146404344S3445S137S10S5133S3639123611S5172966603261JKLMNABCDEGFHI1457463211013911128ABCDEGFHIJKLMNSOURCEMECHANICALEXPLODED VIEW35S11624957S115556S5S12598S417S547S5644342484146404344S7302163S10S324262728S10201823172217625193445S137S10S5133S3639123611S5201410913313872966603261S6152016S8S232S145JKLMONPQREGFHI1311121410985746321EGFHIJKLMONPQRCALED VIEW14Dolby Pro-Logic?Surround Processor/CD Player/TunerSOURCEMECHANICAL PARTS LISTRef. #Part NumberDescriptionQty1BPT0011-AG1TOP CABINET12BPH0018-001DOOR HOLDER13BPG1017-001DOOR LEG14BPN0051-002DISC WINDOW15BPD1016-AG1CD DOOR16DSF0002-001DOOR SHAFT27GSE0131-001DOOR BRACKET (LEFT)18MSV0002-001LEVER SWITCH19BPN0052-001POWER LENS110BPC0015-001KNOB CAP111BPK6020-000POWER KNOB112APE0153-031POWER LED PCB ASSEMBLY113GSE0130-001MOTOR BRACKET 1114FMD0004-001MOTOR115BPG1029-001GEAR F116DSF0001-001SHAFT GEAR 2117BPG1027-001GEAR D318BPH0027-001HOLDER (GEAR)119BPG1026-001GEAR C120HWC4016-302WASHER OD4.0 xID1.6xT0.2 mm MYLAR321DSF0005-001SHAFT GEAR 1122BPG1028-001GEAR E123GSE0130-001MOTOR BRACKET124DSF0003-001STUD (GEAR)125BPG1030-001GEAR G126BPG1025-001GEAR B127BPG1024-001GEAR A128DSU0018-002SPRING GEAR 800g129GSE0129-001DOOR BRKT RIGHT130BRW0001-001MOTOR BELT131DSF0006-001INSERT232BRF0012-001DOOR CUSHION233BPK4019-000OPEN/CLOSE KNOB134BPK2032-000AM/FM KNOB135BPK2033-000FUNCTION. KNOB136BPK1046-001SKIP KNOB137APE0151-021PHONE JACK PCB ASSEMBLY138BPK5030-AG0VOLUME KNOB139APE0152-021VR PCB ASSEMBLY140BPH0021-001CD HOLDER141DSU0016-001CD SPRING LEFT142DSU0015-001CD SPRING RIGHT143BRF0009-001CD CUSHION WHITE244BRF0009-002CD CUSHION BLACK145WCD0010-001CD PLAYER CD93V4BF146APE0152-011CD DECODER PCB ASSEMBLY1Ref. #Part NumberDescriptionQty47APE0154-001PRO-LOGIC PCB ASSEMBLY148APE0151-011CONTROL PCB ASSEMBLY149BPB0010-AGIBOTTOM CAB150APE0153-001MAIN PCB ASSEMBLY151GSE0135-001MAIN BRACKET BACK RIGHT152GSE0136-001MAIN BRACKET BACK LEFT153GSE0133-001MAIN BRACKET FRONT LEFT154GSE0134-001MAIN BRACKET FRONT RIGHT155BPH0020-AG0JACK PLATE156BPN0032-001NAME PLATE FOR ESC5501BPN0032-002NAME PLATE FOR ESC350157BPC0012-001CA