Kenwood-DPCMP727-dm-sm 维修电路原理图.pdf

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1、70%PORTABLE CD PLAYER DPC-MP727/MP922SERVICE MANUAL 2001-3/B51-5706-00 (K/K) 3360OPEN_+DC INPHONES/LINE OUTREMOTEVOLUMEHOLDKnob(K29-7957-04)Cover *(F07-)DC jack(E03-0342-05)Miniature phone jack(E11-0933-05)Miniature phone jack *(E11-0932-05)Variable resistor(R31-0056-05)Knob(K29-7954-14)Knob(K29-795

2、5-03)Knob(K29-7956-04)Front glass(B10-3675-03)In compliance with Federal Regulations, following arerepro-duction of labels on, or inside the porduct relating tolaser product safety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No.21 CFR 1040. 10, Chapter 1, Subchapter J.DANGER :

3、 Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.SPECIFICATIONSStandardsSignal reading format .Non-contact signal reading (semi-conductor laser)CharacteristicsFrequency characteristics .20Hz to 20kHz, 3dBHeadphone output (16 , 1kHz) .9mW + 9mWLINE OUT output level/imp

4、edance.MAX 0.85V/10kPower supplyExternal DC supply.DC 4.5 to 5.1VSize AA alkaline batteries available on the open market (LR6/AA x 2 or 4).DC 3VRechargeable batteries (NB-150 x 2).DC 2.4VMaximum external dimensions (width x height x depth) .129mm x 32mm x 138mm(5-1/16x 1-1/4 x 5-7/16)Weight (net) .2

5、60g (0.6lb)Battery life expectancy (during continual repeated playback)The standard accessories vary depending on the model of the unit. The accessories which are not standard are optionally available. For details, please consult your dealer.Note:KENWOOD follows a policy of continuous advancements i

6、n development. For this reason specifications may be changed withoutnotice.BatteryWhen D.A.S.C. is offWhen D.A.S.C. is onDuring MP3/WMA file playbackSize AA alkaline batteries available ApproximatelyApproximatelyApproximatelyon the open market (LR6/AA x 2)9 hours10 hours10 hoursSize AA alkaline batt

7、eries available ApproximatelyApproximatelyApproximatelyon the open market (LR6/AA x 4)18 hours22 hours22 hoursRechargeable battery (NB-150 x 2)Approximately 7 hoursApproximately 8 hoursApproximately 8 hours* Refer to parts list on page 15. RadioFans.CN 收音机爱 好者资料库DPC-MP727/MP9222CONTENTS / ACCESSORIE

8、S / CAUTIONSSPECIFICATIONS .CoverCONTENTS / ACCESSORIES / CAUTIONS. 2CIRCUIT DESCRIPTION.3TEST MODE.6ADJUSTMENT.7PC BOARD . 8SCHEMATIC DIAGRAM. 10EXPLODED VIEW .14PARTS LIST .15ContentsAccessoriesCautionsMedia that can be played back with thisequipmentUsable media apart from audio CDs (CD-DA)Usable

9、media: CD-ROM, CD-R, CD-RWUsable formats: ISO9660 level 1 and level 2 (excluding expanded formats)Files that can be played back: MP3 and WMA filesCreating media for playing back on thisequipmentCompressing MP3 and WMA filesPlease set up the transfer bit rate setting for the compressionsoftware when

10、compressing MP3 and WMA files as follows:MP3 Files: 128kbps recommended (32kbps-320kbps)WMA Files: 128kbps recommended (64kbps-160kbps) This unit is compatible with 32kHz, 44.1kHz (recommended)and 48kHz sampling frequencies.Categorizing foldersAs MP3 and WMA files are compressed into high-quality so

11、undfiles at an extremely high rate of compression, it is possible torecord several times more tracks than audio CDs onto a singlemedium. It is therefore convenient to split the tracks into differ-ent folders by genre, artist or album for retrieval and repeat play-back purposes. A maximum of 23 folde

12、rs or a maximum of 200 files can bestored on a single media. There are cases where it is not possible to save folders in thedesired sequence depending on the software being used.Naming filesSingle-byte characters between A and Z, single-byte numeralsbetween 0 and 9, and the single-byte underscore (_

13、) can beused when naming files. A maximum of twelve characters canbe displayed. Ensure that the .MP3 (MP3 files) or .WMA(WMA files) extension logs are attached to all file names. Never add the MP3 or WMA extension logs to any files otherthan MP3 and WMA files. If the MP3 or WMA extension logsare add

14、ed to any files other than MP3 and WMA files, theequipment will assume that they can be played back, and thiswill produce loud noises in the headphones, resulting in dam-age of adverse effects.Hint for when naming folders and filesWhen media containing MP3 and WMA files are played back onthis equipm

15、ent, the sequence in which each track is played backwill be the same as the sequence in which they were saved. It ispossible to set up the playback sequence by adding numbersfrom between 01 and 99 to the front of the folder and the filename when saving the file. There are cases where it is not possi

16、ble to save files in thedesired sequence depending on the software being used.Additional informationDepending on the MP3 and WMA compression software in use,it is possible to save track titles, artist names and other informa-tion together with each sound file as additional information.Although it is

17、 possible to display pre-recorded title and artistinformation with this information, it is necessary to ensure thatthis information has been entered in single-byte alphanumericals(Up to a maximum of 30 alphanumericals for each.). The method of entering title and artist information will differ inacco

18、rdance with the compression software. Refer to the com-pression softwares instruction manual or help file.Confirming media and filesCheck to ascertain that MP3 and WMA files can be played backcorrectly on the personal computer in use prior to saving themonto the media. Check to ensure that the saved

19、 file can beplayed back normally. It is not possible to confirm that files can be played back cor-rectly while they are being saved onto the media.When saving files onto mediaEnsure that the session is closed or finalized when data hasbeen written on media. There are cases where media on whichthe se

20、ssion has not be closed or finalized will not be playedback correctly with this equipment. There are cases were the folder names and file names will notbe displayed correctly depending on the software used tosave them. Do not store files or folders other than MP3 and WMA onmedia to be played back wi

21、th this equipment. It is recommended that ten or less sessions are stored whenrecording MP3 and WMA files onto a medium. There are cases where playback is not possible when MP3and WMA files (CD-ROM) and music CD information (CD-DA)are saved on the same media.Remote controller(A70-1490-05)Rechargeabl

22、e batteries(W09-1267-05)Battery carrying case(W01-0984-05)Car cassette adapter (CAC-3A)(W01-0989-05)AC plug adapter(E03-0115-05)Stereo headphones(W01-0993-05)Stereo headphones(W01-1000-05)External battery case(W01-0998-05)Car battery adapter(W01-0921-05)AC adapter(W08-0658-05): E(W08-0659-05): T(W08

23、-0660-05): X(W08-0667-15): M(W08-0682-05): KRadioFans.CN 收音机爱 好者资料库DPC-MP727/MP9223CIRCUIT DESCRIPTIONPort No.Port NameI/OFunctionACTIVEHL1P60ODSP (IC3) reset output.2P61-Unused.3P62ODSP (IC3) power down control.ONOFF4P63-Unused.512P50P57-Unused.1316P20P23-Unused.17VDD-+3.0v power supply.18PB0-Unuse

24、d.19VSS-GND20XI,PB1-Unused.21XO-Unused.22VDD-+3.0v power supply.23OSCIICrystal oscillation circuit input.24OSCOOCrystal oscillation circuit output.25MODE-Connected to VDD.26MCLKODSP (IC15) command clock signal output.27MDATAODSP (IC15) data signal output.28MLDODSP (IC15) command load signal output.2

25、9DSPRSTODSP (IC15) reset signal output.30IPFLAGIUnused.31,32PCON4,3-Unused.33PCON2ORF AMP power down control.34AVDD-+3.0v analog power supply.35PCON1OSystem power supply control.ON36AMUTEOAudio mute control.ON37HPMUTEOHeadphones mute control.ON38RWSELORF gain control.39STATIStatus signal input from

26、DSP (IC15).40ACDETIDetection port of AC adaptor.DETECTED41BBSTOControl port of bass boost.OFFON42HOLDIInput port of hold switch.OFFON43VREF-GND44LBATTIBattery level detection port.45VOLUMEIInput port of volume.46P46OCrystal oscillation circuit is stopped when in stop mode(Hi).47P47,WDOUT-Unused.48LE

27、DDRV-Unused.49ELDDRV-Unused.50CHGORechargeable active output. Batt. charge ON : H51LCDSDOSerial data output for LCD.52LCDRMC-Unused.53PB5-Unused.54VREF+-+3.0v power supply.55,56PB6,7-Unused.57MP3 MLDOCommand load output for MP3.58MP3 RESETOReset output for MP3.59DATA STOPOData signal output for MP3.

28、60P93-Unused.61AVSS-GND62,63KEY1, 2I Key signal input.64KEYEXTIRemote control signal input.65RCHDETIDetection port for low rechargeable battery.Detected : more than 0.2V66VDD-+3.0v power supply.1. Port Description of MicroprocessorDPC-MP727/MP9224CIRCUIT DESCRIPTIONPort No.Port NameI/OFunctionACTIVE

29、HL6769P70P72-Unused.703TIRF 3Tcompensation.71OFTRIChangeover the off track.72P75-Unused.73PUP1IPull up port.74PUP2IPull up port.75NMIIPull up port.76BLKCKISub code block clock signal input.f BLKCK=75Hz(usual playback)77DOORIDetection port of door switch.78LIMITIDetection port of limit switch.79WUPIR

30、eturn signal input from CPU (46pin).80HINTISignal input from DSP (IC3) to return the usual action.81PA5-GND82RSTIReset signal input.83VDD-+3.0v power supply.8491HD0HD7I/OData bus (07) input/output.92VSS-GND93HCNTL0OControl command output for reading and writing.94HCNTL1OControl command output for re

31、ading and writing.95HR/WORead write signal output.96HBILOInterface setting port.97HCSOCS signal output.98HASOInterface setting port.99HDSOInterface setting port.100HRDYOReady signal output.Port No.Port NameI/OFunctionACTIVEHL1DVDD3V-DRAM interface power supply.2,3D0,D1I/ODRAM data input/output signa

32、l (D0,D1).4NEWODRAM writing enable signal.5NRASODRAM RAS control signal.6,7D2,D3I/ODRAM data input/output signal (D2,D3).8,9NCAS(0,1)ODRAM CAS control signal (0,1).1019A8A3ODRAM address signal (A8A3).20DVSS2-Digital ground.21DVDD2-Digital power supply.22SPOUTOSpindle motor drive signal output.23TRVM

33、OTraverse drive positive output.24TRVPOTraverse drive negative output.25TRMOTracking drive positive output.26TRPOTracking drive negative output.27FOMOFocus drive positive output.28FOPOFocus drive negative output.29FBALOThe balance adjustment for the focus error.30TBALOThe balance adjustment for the

34、tracking error.31VREFIDA reference voltage input.32FEIFocus error signal input.33TEITracking error signal input.34FRENVIRF envelope signal input.35OFTIOff track signal input.Off Track2. Port Description of DSP IC (IC15)DPC-MP727/MP9225CIRCUIT DESCRIPTIONPort No.Port NameI/OFunctionACTIVEHL36NRFDETIR

35、F detection signal input.Detected37BDOIDrop out signal input.Drop Out38LDON-Unused.39ARFIRF signal input.40IREFIReference current input.41ADPVCCIAD reference voltage input.42DSLFODSL loop filter output.43DSLF2ODSL unbalance current correction.44PLLFOPLL loop filter output.45VCOFOJitter free VCO loop

36、 filter terminal.46AVDD2-Analog power supply.47AVSS2-Analog ground.48OUTLOL ch line output.49AVSS1-GND50OUTROR ch line output.51AVDD1-Analog power supply.52FSELINoise filter ON/OFF switching input.Off On53TMOD1-Connected to analog ground.54TMOD2-Connected to analog ground.55FLAG-Unused.56IPFLAGOFlag

37、 signal output.5759EXT(02)I/OCommand change over : Expander input/output port (02).60TX-Unused.61MCLKIMicroprocessor command clock signal input.62MDATAIMicroprocessor command data signal input.63MLDIMicroprocessor command load signal input.Load64BLKCKOSub code block clock signal output.fBLKCK=75Hz(n

38、ormal playback)65SQCKI/OCommand change over : Sub code Q register external clock input.66SUBQOCommand change over : Sub code Q data output.67DMUTEI/OCommand change over : Muting input.Mute68STATOStatus signal output.69NRSTIReset signal input.Reset70SPPOLOSpindle motor drive signal output (polar outp

39、ut).71PMCKO88.2kHz clock signal output.72SMCK-Unused.73SUBC-Unused.74SBCK-Connected to digital power supply.75NCLDCK-Unused.76NTEST-Connected to digital power supply.77X1ICrystal oscillation circuit input. f=16.9344MHz78X2OCrystal oscillation circuit output. f=16.9344MHz79DVDD1-Digital power supply.

40、80DVSS1-Digital ground.DPC-MP727/MP9226TEST MODE1. Test Mode1-1 Setting Method of the Test ModeThe test mode is entered when the AC adaptor is plugged in to DC IN plug while shorting the both test lands usingthe jumper and so on.1-2 Starting active contentsKeysDisplayOperationPLAY/PAUSE key05MODETra

41、cking servo on. ( 05 mode )SKIP-UP key03MODETracking servo off. ( 03 mode ) For TE checking.Indicates the auto adjustment value.SKIP-DOWN key07 # : FG Value# : FEXP Value (07 Mode)(Whenever the key is pressed,08 # : FBAL Value# : FOFS Value (08 Mode)the mode is changed.)09 # : TG Value# : TEXP Value

42、 (09 Mode)10 # : TBAL Value# : TOFS Value (10 Mode)STOP key01TESTStop the CD operation.FF keyThe pick up travels outward in the stop mode.FB keyThe pick up travels inward in the stop mode.1-4 Canceling the Test Mode When the STOP/OFF key is pressed, the test mode is cancelled.2. Configuration of Tes

43、t Land and Adjusting Trimming Pot (VR2)TEST LANDFront Side VR2C123C124C18C11OperationPower onFL Indication Indicates 01 test in the display.OtherThe pick up travels inward in the stop mode.1-3 Key Operation in the Test ModeDPC-MP727/MP9227ADJUSTMENTAdjustment of CD playerNo.ITEMINPUTSETTINGOUTPUTSET

44、TINGPLAYERSETTINGALIGNMENT POINTALIGNMENT FORFIG.1+3.0V ADJ.Plug in an ACadaptor to DC inplug.Connect a DCvoltmeter betweenC124(positive) andGND.PLAYBACKVR2+3.0V 0.05VFig.1* Above adjustment must be performed when you replaced IC20.ACEGIBDFHJ2135746W32R28W26W38C25C17W10W12C81091087372253736114424C10

45、C15R3R2C148R18R21R17C7C14W165W4R1L8C20C152C4R25R20R24C5C147C151R88R87R86R9C59C57C54C49C46R58C41R53W52R50W79R89R80R81R100C155C28R39R202R200R206C146R205C145R198R172R182R199C84C115R124R125R27C116C29R177R185C126R136C127C128R137R114R121R191R190R189R140R129 C139R183C103R204L9C2C1R61R591811616981417R51W77W

46、78R496160801C64R19C80C79R163L7W60C43G IOR203R170C85R130C121C122R1334185C140C138R1844513R112C99C118R131C134R168R169C135R201R181156103217161C27R195R194C129R92R116R115R162R174R186C133W208L1C143R1341345G IO13451345414021205051757610012526R7C12C13X1148C3W23C9C163217R188EBB EEBEBBESGBEEBEBB EE BE BBEBEB E

47、BEE BE BEBBEE BEBDR6R5C31C19C156C153R57C30C53C32R171R109R113C142R187C1061234BEE BIC14D2D1Q2IC9IC7IC3IC4Q34Q35Q1IC6IC15IC2IC16IC18Q16Q21D6D12Q41Q26Q37Q14Q15IC19Q28IC24D7Q8IC17Q17IC20Q32Q19IC23Q33D11D8IC26Q31Q20Q22Q6Q9Q36IC1Q18L10VR2C124C119C137C117C144C105C107C125C69C136C109C123C113C108C100C6L5L4C18V

48、R1X2C83C97C37C150C11R35C51 C50R66R63C55 C47C60R55R196R65C39C141C40C42C48C45C341781414871916181345C88R158C78C58W64C87C74C70C73R82R83C131C77C71L31212413L6R207R180R192C111L2R107R17813R110R138R139W11C26R126R127R120R122C101R173C98R175C9361R176R99R84R94R8C56C36C130R96C81R97C132R101C89R1022871R1641345C33C3

49、5R197116C21C149EBCEBCBER159EBBEBEBEEBBEEBBEEBR209R210C63E BC65C52R208C15R64R62R67C102C86B EC110R117BEIC12IC8IC11CN4CN6IC21P1Q23CN5IC13Q27CN3Q3S2S1D4D3IC22Q39D10J3Q7D14Q29Q13Q40Q24Q25PHONES/LINE OUTDC IN REMOTEQ30J2J1X32-3890-11 (J70-1501-12)Q38Q4Q42D15R134R205R20160R39C28W79R50C80R109R89C79EBR80R200

50、R202R171C32R113B EC29817B EW5216R53C41C1531C59C19C156R9R59R58C49C54C57R61C116C4611732R57R88R19R49R5114C30861W78W77C5380R1631C64L74041R100R81C142C15512021C43W6016R87GOIR86C151C147EC135R169R203R1874B3R17051R168C134C20L9R20R25BER204EE BBC4C152C148L8BEC31R536R1W4W165R2R3R6C14C737C15C8W12C3R245051C526257