Kenwood-DPC781-dm-sm 维修电路原理图.pdf

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1、PORTABLE CD PLAYERDPC-781/782/981SERVICE MANUAL 1997-10/B51-5379-00 (K/K) 3176FormatSystem.Compact disc digital audio systemLaser.Semiconductor laserAudioFrequency response.20 Hz 20 kHz, 3 dBHeadphone output (16 , 1 kHz).10 mW + 10 mW(Headphone output level / impedance.max. 450 mV / 2.2 )For CHINA a

2、nd Duty Free Shop in JAPANDigital output optical.-21 dBm -15 dBm (wave lenght 660nm)For other countriesLINE output level / impedance.550 mV / 702 Power supplyExternal DC supply .DC 4.5 6 VRechargeable batteries.DC 2.4 VCommercially - available alkaline batteries.DC 3 VBattery life (continuous playba

3、ck) Repeat playback stops after 16 times.(Figures inside parentheses are the values when D.A.S.C. is ON.)Commercially-available alkaline batteries (LR6 / AA) x 4 .Approx. 40 (34) hoursCommercially-available alkaline batteries (LR6 / AA) x 2 .Approx. 18.5 (17) hoursRechargeable batteries (NB - 130) x

4、 2.Approx. 9.0 (8.0) hoursWith 2 commercially-available alkaline batteries and rechargeable batteries.Approx. 27.5 (25) hoursDimensions (W x H x D).133.6 mm x 26.5 mm x 151.8 mmWeight (net).270 g (9.5 oz.)SPECIFICATIONS1. KENWOOD follows a policy of continuous advancements in development. For this r

5、eason specifications may be changed withoutnotice.2. Sufficient performance may not be exhibited at extremely cold locations (where water freezes.).NotesNotes* Refer to parts list on page 15.In compliance with Federal Regulations, following are reproduc-tions of labels on, or inside the product rela

6、ting to laser productsafety.KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOID DIRECT EXPOSURE TO BEAMFront glass(B10-2388-04)Plastic cabinet *(A02-)Chassis(A10-3391-01)DC jac

7、k(E03-0355-05)Cover Assy *(F07-)Knob(K29-6787-04)Knob(K29-6785-03)Knob(K29-6783-03)Knob(K29-6789-04)Variable resistor(R31-0090-05)Miniature phone jack *(E11-)Ecctric circuit module(W02-2527-05)Miniature phone jack (E11-0371-05)Miniature phone jack (E11-0278-05)Escutcheon *(B07-)Knob(K29-6788-03)DPC-

8、781/782/981(K) 1P( 98.4.24 23:08 yW 2RadioFans.CN 收音机爱 好者资料库DPC-781/782/9812CONTENTS/ACCESSORIESStereo headphone (1)(W01-0923-05) DPC-981 M typeDPC-781 M typeDPC-782 X typeStereo headphone (1)(W01-0924-05) DPC-782Cassette adaptor (1)(W01-0922-05) DPC-782Car battery adaptor (1)(W01-0921-05) DPC-782AC

9、 plug adaptor (1)(E03-0115-05) M typeRechargeable battery (2)option : NB -130(W09-1237-05)Remote control (1)(A70-1171-05) DPC-981 M typeDPC-781 M type(A70-1190-05) DPC-782 X typeAC adaptor (1)(W08-0658-05) E type(W08-0659-05) T type(W08-0660-05) X type(W08-0667-05) M type(W09-1251-05) K, P typeRemot

10、e controller assy (1)(A70-1037-05) DPC-782DPC-981 K,P typeAudio cord(E30-2782-05) DPC981 T,E typeBattery (1)DPC-981Stereo headphone (1)(W01-0946-05) DPC-981 M type(W01-0947-05) DPC-981 K,P type(W01-0954-05) DPC-981 T,E typeSPECIFICATIONS .Top coverCONTENTS/ACCESSORIES .2ADJUSTMENT.3PC BOARD . 5SCHEM

11、ATIC DIAGRAM . 7EXPLODED VIEW .13PARTS LIST.15AccessoriesCONTENTSAAA()DPC-781/782/981(K) 1P( 98.4.24 23:08 yW 3RadioFans.CN 收音机爱 好者资料库DPC-781/782/9813ADJUSTMENT1. Test Mode1-1 Setting the test modeThis model can be set to the test mode by shortingthe test-land of the X32 board.STARTTurn on lidswitch

12、Is test landshorted?Test mode pro-cessingIs key pushed?Track No. 01is displayed.TEST MODEYESNONOSee following table.Normal operationNo.ModeKey NameFunctionTRACK No. display105PLAY/PAUSE(6)1. Focus servo.ON 2. Tracking servo.ON 3. Feed servo.ONAbsolute time at position of limit SW is displayed in tim

13、e area, then play is started.05After 1, 2 and 3 are fin-ished, track No. playedcurrently and its playtime are indicated.203UP()1. Focus servo.ON 2. Tracking servo.OFF 3. Feed servo .OFF03301STOP(7)1. Focus servo.OFF 2. Tracking servo.OFF 3. Feed servo .OFF Test mode can be can celled while pressing

14、the STOP (7) Key in 01 mode.014While pressing theP. MODE/SEARCH Key, turn the AC ONAll LCD is turned ON for 2 seconds. All LCD is turned OFF for 2 seconds. Returned to normal mode.1-2 Key and functions avild in test modeDPC-781/782/981(K) 1P( 98.4.24 23:08 yW 6DPC-781/782/9814ADJUSTMENTNo.21LASERPOW

15、ERApply the sensor section of optical power meter onthe pickup lens.Short the test land. Confirmthat the display is .Press FF Key and confirmthat the display is 03.On the power from0.08 to 0.15 mW, when the diffractiongrating is correctlyaligned with the RFlevel of 1.0 Vp-p ormore.345ITEMFOCUSERRORT

16、RACKINGERRORFOCUSGAINTRACKINGGAININPUTSETTINGTest discKTD-03Test discKTD-03Test discKTD-03 Applysignal of1.0kHz,0.05VrmsbetweenCheck-land F1and F2.Test discKTD-03 Applysignal of1.0kHz,0.05VrmsbetweenCheck-land T1and T2.OUTPUTSETTINGConnect an oscillo-scope as follows.CH1:RF(Check-land RF)CH2:T1(Chec

17、k-land TE1)Press the FF key.Confirm that the display is .Connect a LPFbetween Check-land F1 and F2 towhich connect anoscilloscope or ACvoltmeters.Connect a LPFbetween Check-land T1 and T2 towhich connect anoscilloscope or ACvoltmeters.Connect an oscillo-scope as follows.CH1:RF (Check-land RF)CH2:T1

18、(Check-land TE1)PLAYERSETTINGPress the PLAY key .Confirm that the display is05.Press the PLAY key .Confirm that the display is05.Press the PLAY key .Confirm that the display is05.ALIGNMENTPOINTTEBALANCEVR5FOCUSGAINVR4TRACKINGGAINVR6FE BALANCEVR3ALIGN FOROptimum eye patternSymmetry betweenupper and l

19、owerTwo VTVMs shouldread the samevalue.Two VTVMs shouldread the samevalue.FIG.(d)(e)L.P.FL.P.FF1F2AC voltmeterVC1.0kHz0.05VrmsL.P.FL.P.FT1T2AC voltmeterVC1.0kHz0.05VrmsNote: Test DISC KTD-03, TCD-783 or equivalentLPF : Around 47k + 390 pF or so.Step 15 are in Test Mode.(d) Focus GainTwo VTVMs should

20、 read the samevalue.(e) Tracking GainTwo VTVMs should read the samevalue.DPC-781/782/981(K) 1P( 98.4.24 23:08 yW 7ACEBD2135746PC BOARD(Component side view)Refer to the schematic diagram for the value of resistors and capacitors.5DPC-781/782(K) pcb 98.3.20 4:10 PM yW 16PC BOARD(Foil side view)Refer t

21、o the schematic diagram for the value of resistors and capacitors.1JFHGI235746DPC-781/782(K) pcb 98.3.20 4:13 PM yW 21234567IC11IC12EMMF(X32-348X-XX)PICKUP ASSY (T25-0049-05):KMS-542DA DCBIC13IC5IC1IC2Q20CHARGECONTROLPULSEOPE AMP(NO USED)Q23D31(PULSEICQ21CONTROLSTEP DRIVESPINDLE GAINCHANGE-OVER(NOR.

22、/HI SPEED)D.S.P.D5D3(FOK L)CONTROLSLED GAIN(2/2)IC9(1/2)IC9CHARGE)SWITCHLIMITTERQ34AC ADAPTORDET.Q6D1Q1Q5(DEFECT DET.)COMPARATORDEFECTDET.VOLUMED6(1/2)IC10D15D14D2D25Q18+2.9VAVR)(CONVERTERDC-DCSWITCHDC-DCCONVERTERD26Q9PDLDD13Q11E1ABCN1CN6CN3CA+2.9V AVR Q8Q10Q3LDCOILFOS.COILTRK.C0N/OFFAPCCN2BRESETQ32

23、Q2MOTORDRIVERQ37DET.BATTERYQ17FGDET.RF/SERVODEFECT(2/2)IC10Q15Q16TGTBFBLASER DIODEQ13Q14D121.6V2.3V6.0V1.5V1.1V0V3.1V5.7V0V0V0V0V0V5.7V2.7V0V3.3V1.4V2.5V0.8V2.7V1.1V1.1V1.1V1.2V1.1V1.1V1.1V0V0V2.6V2.7V2.6V1.3V1.2V1.4V1.3V1.3V1.4V1.3V1.3V1.3V0.3V1.3V2.6V1.3V1.2V1.3V1.2V1.7V0V0V2.6V1.4V2.6V2.7V1.4V1.4

24、V1.1V2.7V0V2.7V2.7V0V0V2.7V2.7V2.9V5.6VBATT.2.3VACADP.5.0VBATT.2.6V5.7V0.1V0.2V0.1V0V0V0.1V0.8V1.3V1.4V0.8V1.4V1.4V1.4V1.6V1.3V2.4V0V0V0V0V0.3V0.2V0.9V2.1V2.6V1.2V2.7V2.5V2.6V2.5V0V2.7V0V0V2.7V0V2.7V2.5V2.6V2.5V1.2V1.6V1.4V1.4V0.7V1.0V1.4V1.4V1.4V1.4V1.3V1.4V1.4V1.4V1.4V1.4V0V2.7V0V2.7V2.6V2.6V2.6V1

25、.5V1.6V0.6V1.3V0V2.9V1.4V1.4V1.4V1.4V1.4V1.4V1.6V1.4V1.4V2.7V1.4V1.4V(BATTERY)5.5V2.9V2.7V5.0V1.4V2.7V0.8V0.6V1.4V1.8V1.4V2.0V2.2V0.2V1.4V1.4V10K11K220P220P+C11210u101M0.010.047IC9(2/2)IC9(1/2)Q2222K16KR29L1470uHR26W1R205R31410K39KC341000P1000PC380.033321+B+B+B+B+BR20139+B+B+B+B15R204 R214 18KR11922

26、KSYSM12PC213+B+BR21222C201+47u4IC10(1/2)Q2122KR23R122KR2184.7K560R21716.9344MHz+C18100u43.3C10+22u102.6V+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+BC2POC4MC45310u10+130R337Q3+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+BQ174180KQ34R9180KR110.01C5300KR12220KR10300KR1324KR847KR26R7 3.3R6 3.3R142.7K+22u16C1330R250.1C6R150.01C9R

27、16390+BIC10(2/2)Q15,16R45227K+B+B+B+5V10KR3010.1C30210K1000P+C30147u4C4511000PC450+B+B+B+B+B+B+B+B+B+B+B+B+B+B+BR3091000PC3030.01C305R19220P+10u10C351000PC391000P1000PC37OP-+C36 22u10C431000P1000PC31PREGND7953C80.01R1813KC44+B+B330R21949473915KR10847KR118 180K1.6KR11634-+12338+B+B+BR14422KR1421.3MR1

28、36R135R141R1434.7KC41 0.133KR24293110KR271R204.7KR305EXTVSSVO+-756L22527-+182313TRK(+)-2+SPD. MOTOR+212-SLD. MOTOR1LMT. SW1X3330KR2061MR120 1M C120 150PSPDL+SPDL-SLED+SLED-SLTSWGND414040R17 10KR22220+C17 100u103VOEXT42VDD1VSSCE5SHORT LANDVCCPD1PD2VC6GNDVRPD451PD1PD22E31514FCS(-)FCS(+)121110FA/LTRK(-

29、)987LDVCCVC+A/L100K82K200P390KR117L11+B+B+47u4C114R215470R2136.8K330KR216MDP40VR150KC306 1C307 1R327470KR326470KR316470KR325100KR2147K3GND4SUB2OUTVCCNC15R342 4.7KR321 4.7KR32210K38344140C40C32 1000PCO1CO3331BATT1BATT3322OUT1FOUT3F313POWGNDPOWGND304OUT1ROUT3R295BATT12BATT34286OUT2FOUT4F277POWGNDPOWGN

30、D268OUT2ROUT4R259BATT2BATT42410DGND4412ESPCN34313PCCN44214CTIN44115RTIN34016CLKVC3917VGIN13818LGIN23719CN1PREVCC3620CN2OPOUT352134CH1MUTE2211CO423CO225272931SPDL+SPDL-SLED+GNDSLTSWSLED-12211291R129567975133FCS+FCS-TRK-TRK+ALFVCVCCLDGNDVRPDEPD1PD213254151413121110C12822u10VR322K10KR12710KR130R131 30K

31、R1284.7+C12647u4R132 30KC116C117C118 4700PC119 0.01R1142.2KR1154.7KR11322KC12133PR137100K1412131110R112 220KR11151KC1111R4533.3K510K82K0.022R139VR422KC108R104C107 0.01R103 510KC106C104 0.1R138R107+C1054.7u6.3R101100C102 0.47C101R102 56KC103 220PC110748560.1+-C125R134 1MR123VR522K22KVR6180KR106100C12

32、90.1 1.8M6.8KR122R12524KR12410KR12620KR133 1M180K0.1C122+C12722u4R140 C1230.02225TAMFOK1226FSETCC21127TG2CC11028TGUCB929SRCHCP830FEMRFI731FEORFO632FLBRFM533FGDLD434FDFCTPHD335FEIPHD1224SENSFE.B3723C.OUTF3822XRSTE3921DATAEI4020XLTVEE4119CLKTEO4218VCCNC4317ISETTEI4416SLOATSC4515SLMTZC4614SLPTDFCT47361

33、FEOPHD24813TAOVC28988871110861214131005713854443424110K220PC22311KR223R221C21412PR222 C224R224+C20247u4C2100.01430KR2101.5K98767651310uH+C2030.0470.47C207R209 1M C206 220PC2053300P100KC2041500P+C20922u4R2073.3KR20810KC2080.15R202R203VDD61ZLRCK39AVSS62YLRCK38AVDD63AOUT164ASY037AIN165ASYI36LOUT166BIAS

34、35AVSS67RF34XVDD68AVDD33XTAI69CLTV32XTAO70AVSS31XVSS71FILI30AVSS72FILO29LOUT273PCO28AIN274VCTL27AOUT275V16M26AVDD76VCKI25AVSS77VPCO24VDD78TES12379TEST221VSS602VSSLMUT593EXCKRNUT58SBSO57SCOR564WFCKSQCK555EMPHISQSO546EMPHSENS537DATA8DOUTXLAT529CLOK5110XTSLSEIN11CNIN12DATO13XLTO14CLKO15SPOA504916XROFSP

35、OB4817XPCKXLON4718RFCKFOX4619VDDVDD4520VSSVSS44ZBCK43YBCK42ZDATA8021XRSTPWMI41YDATAR121100KC115 0.01+C2622u4C1130.01R110R109120KXXXX()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()ABCDEFGIKMOHJLNDPC-781(K) 3P 98.4.24 23:06 y W 2Y22-7460-11DPC-781/782/981ED1 (B38

36、-0161-05)IC8DPC-781/782/981 (K)IC4IC7IC6IC3: UIBC44D31Q24D30D23AC ADP.D29DOWNS15UPS14BBS13STOPS12S11PLAYQ12CN5SEGMENTCOMMONS16DASCS17P. MODEREPEATS18CONTROLSENSORREMOTEA1D16D20D19D18D17UPDOWNSTOPPLAYLCD BACK LIGHTD22D21DCBOUTABH6504KD26D51: MBRA130L: DA204UD3: DAP202UIC7,8 D25D2,6,11,13-15,27 : DTA1

37、14EUAQ36Q2,7,11,15,19,20,23,31,IC12: XC6383B301MRIC13: PST9124NRLIMITTERS3BUFFERON/OFFPOWER SUPPLYOPTICAL OUTOUTQ19MUTEB.BOOSTSWD28Q39Q35Q40Q44Q31Q33D11HOLDSWD8D9D7Q42D27LINE OUTJ4Q4P1DRAMSWB.BOOSTQ41ON/OFFLEDIC1: CXA1982QIC2: CXD3009QIC3: uPD78063GF-138IC4: LA4800VIC5: BH6509K orIC6: RL5C356IC9: NJ

38、M2904MIC10: NJM2903MIC11: RN5RG29AA-TRQ1,5,40,43: DTA124EUA 32,34,35: DTC124EUAQ3: XP161AO390PRQ4,17: 2SA1576A(R,S)Q6,9,44: 2SD2153(V,W)Q8: 2SB1424(Q,R)Q10,37,38: 2SC4081(R,S)Q16,45,46: DTC323TKQ14,22,33,39: 2SB970Q12,13,41,42: DTC114TUAQ18,21,24: DTA114TUAD1: UDZ5.1BD5,12,29: MA111D7-9,24,28,30: RB

39、450F Q384.5VBATTERYJ1D51: U2FWJ44N: RB451F MN41V4400TT-07Q36OPTICAL: MN41V4400TT-08 or A2AMPPHONESPROOFSHOCKJ3REMOTEJ2HEADPHONECONTROLLERQ43MUTEMUTEQ46Q45LID SWS2Q7D24u-COMSHUFPGMD.A.S.C.B.BOOST2C121B.BOOSTCPGMSHUFD.A.S.C.3.1V2.7V2.7V3.1V3.0V2.7V2.7V0V0V2.6V2.7V0V2.7V2.8V2.7V2.8V2.6V2.6V2.6V2.7V2.7V

40、2.7V2.7V2.7V0V0V2.7V2.7V0V2.7V2.0V0V12.6V0V2.7V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V1.2V0.8V1.6V1.2V1.0V1.0V1.0V1.0V1.5V0V2.6V2.9V2.0V2.9V0V2.7V2.3V2.7V2.7V2.7V2.7V2.7V2.7V1.4V1.3V2.7V2.7V0V0V1.3V2.6V1.4V1.2V1.3V2.7V0V1.4V0V0V1.3V1.2VOFF:2.7VB.B ON:0V2.2V5.7V2.7V5.5V5.

41、6V1.4V1.1V2.4V2.7V2.8V2.9V2.2V2.7V1.1V1.1V1.1V1.1V6.1V0V1.0V1.0V1.0V1.8V1.0V1.8V+B LINEXXXXC70.1R351C31347K0.1A1W1R28,315,R26345C311,312YESNOYESNO2.2YES312C311,YESNO0-23MGENERAL MARKETYESNOYESNOW1NOYESYESNONO2.23.33.3R26YESNOC311NOYESYESNOYESNOR315NONOR28YESNOYES2.23.33.3R26YESYESQ35,39Ni-MH : 2.4VA

42、LKALI : 3.0V180R338+B+B+BNONO4123R34022KR3202.4KR3191.8KR3181.5KR3171.2K1.2KR323R30627KR3052.7KC40.1R510KC20.1+B321NCC4056.8KC424C407C406+BSIGNAL LINEGND LINE1918171615141312111098765432143122.2R3318.2KR3304.3K5.6KR329+BOUTVCCGNDR315470KR341100+C31222u471706968676651+B+BR3101806463626160545352657473

43、72180R332180R313180R312180R311DESTINATIONCOUNTRYU.K.GENERAL MARKETCANADADPC-981 (X32-348X-XX)180R334180R333R28AUNIT No.ABB.J0-22COUNTRYJAPANDESTINATIONDPC-781 (X32-348X-XX)YESYES1-01M2GENERAL MARKETCANADAPD31YESYESNOW1YESA1NONOC312YESQ43YESYESB D NOETEUROPE0-11KU.S.A.A CABB.UNIT No.YESM2-710-21PYESW

44、1YESR28D31NOR26 A C DBUNIT No.ABB.KCOUNTRYU.S.A.DESTINATIONDPC-782 (X32-348X-XX)3.3YESNO0-12XAUSTRALIACANADAPA1YESDNOCYESNOBYESNONOYESNO0-00NOA1YESR315D28NOC312+B+B+B470R21110R335321A DB CABB.UNIT No.DESTINATIONCOUNTRYDPC-TR1 (X32-3480-00)312+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+B+BQ31,33,35,

45、39Q36+B+B+B+B+B+B+B+B+B+B+BA91KR307+LINER4152.21C4021C401Q35,39345R315,39Q35,Q35,39D28,31R341YESD28Q43NOR341Q43NOR341R345Q43D31NOYESD28YESNOYESR341R345C3114.7KR423OFFON100KR4214.7u6.3+4.7u6.33.3u4+1C4174.7R4110.15C411+47u4R402C4140.0470.047C4152.2R416R4124.71R4130.15C412C413140393738424143440.047C41

46、6100R35010u10C310+3435361.1KR3471KR414VSSD011123940A5A310944A4VCC4338A6A21536131437XOEA8A063541A7A1874216531IC7,8R34310KR344R33947K22K0.01C311R308470K47KR349PLUGR324 100KR3453.9KC3201193017292818D3D1232D2XCASXWEXRAS433343R420 16KBEEP9RFO8VCC11PREG610RFCO7VRCO5.6KR4065.6KR405R419 10KC432C431LchGNDRch

47、+0.0141R30233K333231293027R422R2100KR3100KGNDSWITCH+BCOM1COM0COM2COM3S0S1S2S3S4S5S9S6S7S8S10S11S12S13S140.01C309C3081000PR33610GNDOUTVCCGNDR401 22KC4041200PR4048.2KC4031200PR4038.2K+47u4C42016PWSWMUTE115INAOUTA214INCPWG313INBOUTC412OUTB5VREFC421383736273231D01VSS20D12D319XWE3D218XRAS4XCAS217A95XOE16

48、A06A815A17A714A28A613A39A512VCC1011A4C42247u497989695213225747494240444354333231302928343536373839404142434439993422XSOEXRAS3521SDTOA93620XRSTA83719SCORA73818RFCKA63917XROFA54016ZDATAA44115ZLRCKA04214ZBCKA14313YBCKA2XWEVCC331D1XQOK322D0XWRE313D3XEMP304D2XWIH295XCASC176286XOE/XCAS2CHDT277SCKEBLK268SD

49、TICLK259XLTGND2410A3YLRCK44121123TESTY DATAR43322R417100KR418100KR432680R43422C4230.1+C4344.7u4C4334.7u4R431680KEYDATARchLchVREF1000P1000P51R30333KR328 100KR3481K85878688899997989610095R4X25.00MHz110K C3040.0223542132122180NCNC279NCSQCK378NCSDTO477NCSDTI576NCSCK675NCIC774S14X2873S13X1972S12VDD1071S1

50、1XT11170S10XT21269S9RESET1368S8SCOR1467S7RCI1566S61665S5FOK1764S4GFS1863S3HDATA1962S2BB2061S1SGAIN2160S0CHDT2259VSSXSOE2358VLC2NC2457VLC1NC2556VLCODEFECT2655BIASNC2754COM3AVSS2853COM2KEY12952COM1KEY2100BATTV131SQSO99BATTV232XLT98HPKEY33XQOK97NC34XWRE96ADON35XEMP95AVDD36XWIH94AVREF37LIDSW93SLTSW38LDO