Kenwood-LDK-300-V-Service-Manual电路原理图.pdf

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1、VIDEO-CD LD PLAYERLD-K300VSERVICE MANUAL1997-8/B51-5333-00 (K) 23370AUTOPAUSEOPENDIGITALMONITOR674CRCRECHO LEVELKARAOKEKEY CONTROLIiPOWER-ONOFFMIC2MIC1MIC LEVEL21MICMIC CONTROLON/STANDBYVIDEO CD LD PLAYER LD-K300VAUTO AUDIO PREVIOUSNEXTAC- 3 OUTRFDIGITAL VIDEODIGITAL VIDEOCOMPACTCOMPACTVIDEO CDVIDEO

2、OUTPUTAUDIOOUTPUTDolby AC - 3RF OUTSYSTEMCONTROL2/R1/LIndicator(B12-0316-04)Dressing panel(A21-1966-03)Panel(A19-0865-01)Escutcheon(B07-2359-12)Phono jack(E63-0130-05)Phono jack(E63- 0116-05)Miniature phone jack(E11-0188-05)AC power cord(E30-2717-05)Metallic cabinet(A01-3440-01)Phono jack(E11-0366-0

3、5)Miniature phone jack(E11-0200-05)Knob(K29-6688-02)Front glass(B10-2361-13)Knob(K29-6687-03)Knob(K27-2233-04)Panel(A60-1155-11)Knob(K29-6689-02)Foot(J02-1188-03)Foot(J02-1188-03)Phono jack(E63-0122-05)Power cord busing(J42-0083-05)Refer to LVD-290 service manual (B51-5233-00), if yourequire the sem

4、iconductor description (X32, IC9 9 MPEGu-COM) and disassembly for repair in detail.Attention !To avoid firing or other accident, the repair (in cloudingreplacement of fuse) of the switching power supplyP.C.B. (W02-2568-35) is prohibited.In case of the repair (defective P.C.B.), please replacethe com

5、plete P.C.B. with new one.LD-K300V(K) COVER( 98.4.23 8:58 PM yW2LD-K300V2CONTENTS / ACCESSORIES / CAUTIONSBeware of condensationWhen water vapor comes into contact with the surface of coldmaterial, water drops are produced. If condensation occurs, correctoperation may not be possible, or the unit ma

6、y not function correct-ly. This is not a malfunction, however, and the unit should be dried.(To do this, turn the POWER switch ON and leave the unit for sev-eral hours.)Be especially careful in the following conditions:lWhen the unit is brought from a cold place to a warm place,and there is a large

7、temperature difference.lWhen a heater starts operating.lWhen the unit is brought from an air-conditioned place to aplace of high temperature with high humidity.lWhen there is a large difference between the internal tempera-ture of the unit and the ambient temperature, or in conditionswhere condensat

8、ion occurs easily.NO DISCContentsVideo cord (1)(E30-1427-05)System control cord (1)(E30-2733-05)Audio cord (2)(E30-0505-05)AC plug adaptor (1)(E03-0115-05)Use to adapt the power cord tothe shape of the wall outlet.(Accessory only for regionswhere use is necessary.)CONTENTS / ACCESSORIES / CAUTIONS.2

9、ADJUSTMENT.3PC BOARD.5SCHEMATIC DIAGRAM.9EXPLODED VIEW.26PARTS LIST.28PARTS DESCRIPTIONS.37SPECIFICATIONS.Back coverCautionsNote related to transportation and movementBefore transporting or moving this unit, carry out the followingoperations.1. Turn the power ON but do not load a disc.2. Verify that

10、 the display shown appears.3. Wait a few seconds and turn the power OFF.AccessoriesLD-K300V(K) COVER( 98.4.23 8:58 PM yW33ADJUSTMENTLD-K300VMAIN UNIT(X34-1033)Note :L.P.F. : 33k+1000pF or so, CD disc : CD test disc (SONY YEDS-18 or equivalent), LD disc : CAV30cm(with digital sound), STILL : Remote c

11、ontrollers key.fig. : Waveform (P.12)No.ITEMINPUTSETTINGOUTPUTSETTINGPLAYERSETTINGALIGNMENTPOINTALIGNFORFIG.1TILTBALANCELD TEST DISCConnect theTV monitor to thevideo output.Frame No.19,001STILL (Still image) *Frame No.23,402STILL (still image)VR3Minimize thecrosstalk on thescreen.Connect anoscillosc

12、ope to RF :CN3 pin 6 (EFM).Frame No.20,000STILL (still image)Eye-pattern ismaximum and clear.(a)2FOCUS BALANCETEST DISCConnect anoscilloscope to RF :CN3 pin 6 (EFM).PLAYVR2Maximize the RF signal (eye pattern)amplitude.(a)3TRACKING BALANCETEST DISCConnect an oscilloscope to TE : CN3 pin 1.TE OFFVR1Sy

13、mmetry betweenupper and lower.(b)4FOCUSGAINTEST DISCApply a signal(1.0kHz/0.2Vp-p) toCN3 pins 4 and 5 .Connect an L.P.F.toCN3 pins 4 and 5, towhich connect anoscilloscope or twoAC voltmeters.PLAYVR4Two VTVMs shouldread the same level.5TRACKINGGAINTEST DISCApply a signal(1.3kHz/0.2Vp-p) toCN3 pins 1

14、and 2.Connect an L.P.F.toCN3 pins 1 and 2, towhich connect anoscilloscope or twoAC voltmeters.PLAYVR5Two VTVMs shouldread the same level.6VIDEOLEVELLD TEST DISCTerminate the videooutput with a 75resistor and connectan oscilloscope toboth ends.Frame No.100STILL(still image)*Frame No.13,000STILL(still

15、 image)VR7Video signalamplitude to 1.0Vp-p74FscPOWER ON Connect afrequency counter tocheck land (14M) ofIC3 pin 7.STOPTC114.31818MHz50Hz8VIDEO CDCLOCKPOWER ONConnect afrequency counter tocheck land(13.5MHz) of IC2 pin 99(R16).STOPTC113.5MHz50HzSetting the TEST MODE (Short-circuiting the CN7 pin 1 an

16、d 2 in AC IN mode : TE OFF)VIDEO CD UNIT (X35-2170-20) Setting the power onLD-K300V(K) 1P 98.4.24 8:28 AM yW14ADJUSTMENTLD-K300VNo.ITEMINPUTSETTINGOUTPUTSETTINGPLAYERSETTINGALIGNMENT POINTALIGNFORFIG.TANGENTIALCD TEST DISCConnect anoscilloscope to CN3pin 6 (EFM). (MAINUNIT)PLAYTangential nut(Turn wi

17、thin 4clicks)Maximize the RFsignal (eye pattern)amplitude.(a)R-DEPENDENCECD TEST DISCConnect an L.P.F. toCN3 pins 7 and 8, toconnect anoscilloscope andselect X-Y mode.(MAIN UNIT)PLAYR-dep. nut (Lessthan 10)Adjust so that theLissajous waveformbecomes -45MECHANISM ADJUSTMENT PROCEDURERadial-Dependence

18、adjust (slide the pickup tomeet with the center ofthe pickup and that of theturntable.) Note :CD disc : CD test disc (SONY) YEDS-18 or equivalent), LD disc : CAV 30cm (with digital sound)Tangential adjust(Keep the dischorizontally for thepickup)GNDMain unit (X34)Oscillocope(a) TILT BALANCE / FOCUS B

19、ALANCE / TANGENTGNDMain unit (X34)Oscillocope(b) TRACKING BALANCECN3CN3CN7 CN7E = FLD-K300V(K) 1P 98.4.24 8:28 AM yW2ABDFHJCEGI2 1357 46Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)LD player unit (X34-1033-00)56LD-K300V(K) 2P PCB 98.4.24 8:37

20、AM yW1KMOQSLNPRT2 1357 46Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view)Display unit (X25-5983-00)Sub-circuit unit (X13-7400-20)Video unit (X35-2170-20)78LD-K300V(K) 2P PCB 98.4.24 8:42 AM yW2ABDFHJCEGI2 1357 46( )( )( )( )()() )( ()()()L2H1151

21、0( )( )( )( )() () ()()()(FE BAL( )() () ()(TILT BAL)(1u HEADBCFPD VCCPD VEERF(PD) OPICLDOBJECTIVELENS-+-+TRACKINGCOILFOCUSCOILTGKG RTNTGKG RTNTGKG RTNTGKG RTN91011121415161718202124 23 221 H 8 7 61K(B)5 3 2 14TILT LEDTILT PD INTILT PD OUTTILT SENSORT RTN F RTN F MO T MO VEE VCC RF RF GND E F19NC13N

22、C B C D A RF GND VRDLD PD OUTRF GND PD IN LEDTILTAPCPD123FG BIGNDFG OUTWH1WH1FG SENSORPH13 2 1S2SLT(LD)(CD)SLTS1654321WH2GND LD SWCD SW FG BI FG OUTGNDMOTOR SLIDERPH1: T95-0048-05SPINDLEMOTORSLDMOSLDRTNABMOTOR LOADINGC-+ -+ -+-VEEVEE+-+-+-+-CDLDLD/CD+-AGC- +- +VCCRF-AMP24232221201918GND1234567171615

23、1413891011120.1C232C234 0.033C236 0.47u50R356 10KC23847KR368330PC2410.06847KR362D15100u10C20768PC21610KR228C220 47PR226 15K0.47u50C208+15KR2551MR250100u10C211+82KR22912345678E FRF(EFM)FE1 FE2GNDTE2 TE1AD109VR5PDGNDLD8 7 6PD INPD OUTGND4 3 2LED113NCF14B C12 1115EVEE GND20 19RFVCC GND1718 1623FRTNTMO2

24、4FMOTRTN22 21u-COM G4FG OUT5CD SWLD SWFG BI3 2 1CN3CN124100u10C205+100R221 82KR222 33KR223 68KR225 68K R224 33K C212 68P23 2122R202+100R213100KR21222R218100u10C201+L1510u HQ29DIODEDRIVE LASERVR1 22KTE BALR357 1001260.022C500680R5072.2K R502180R519220PC511220R501Q51LD FEMRF AMPAPCPDCN2C206100u10+2.2K

25、R203220R204Q28BUFFERRF SIGNALVR247K7-4(2/2)+IC10864.7KR2431u50 C202 +100K R242470R2381KR2390.01C287R241 1K0.01C28610KR240R2094.7K18KR2105.6K R2375AMP(FG SIGNAL)0.1C21322R28422R28310KR32515KR26422u50C210+C237 0.01C209 0.1R263 100K10KR269100K R2742.2R282220K R2802.2R2815 6IC13+4 -76IC12- +8573IC13+28-

26、1(1/2)AMP(1/2)(2/2)D13COMPARATOR+10IC14-4 3210KR279(1/2)1SWITCH(LOADINGMOTOR CONTROL)68KR27856KR272120K R2779020Q65Q66Q64SWITCH(LOADING)1718+3(1/2)IC10-212.2K R2581KR271100KR2561u50 C2440.01C2500.1C2480.01C2331KR259VR41K71668AMP4D(FSUM)SIGNALQ74100P10KVR5 10KR361C235R359100C2496800P10KR3636125+6(2/2

27、)IC15-7981.2R2991.2R298FIL,SEL(VIA EQ SEL)Q4224R302 4.74.7R2960.1C222R303 4.7R382 150KC223 100P10KR300C218 0.01C282 22u50+R301 22K4.7R29721R372 470KR371 220KQ27+101-234IC15(1/2)4.7R3054.7R3064.7R304R307 1.2 R308 1.24.7R309C224 0.1R310 22K22u50C283+R311 22KC225 560P2223Q62FOCUSDRIVEMUTEQ67470KR31410K

28、R315Q20560PC251(5/7)(1/7)IC9(6/7)IC9IC9INVERTERIC9(1/73/7)TRADKING MOTOR DRIVE2110111213FOCUS MOTOR DRIVESLIDERMOTORDRIVERFE GAINR205330GAINTRKWH5PHOTOINTERRUPTOR3E512PH1C170.10.056C16CN2LDMO1LDRTN27 6 5CLOSEGNDTILTOUT3S32OPENTILTB12E410KR2510KR234 3180R245.6KR222 1WH4LDMOLDRTNGNDCLOSESWOPENSWTILTOU

29、T+5VPH1 :T95-0108-152.0V3.1V3.8V0V0V0V-5.0V3.2V-5.2V-0.1V-0.1V0V0V0V-2.0V0V 0V 5.0V 0V -2.0V0.7V0V 0V-0.5V5.0V5.0V-5.2V1.3V4.7V-2.6V-1.3V-0.5V-0.5V-0.5V0V-5.2V0V0V0V0.7V0.7V14.2V0V0V0V2.5V2.5V2.5V-5.2V-14.1V0V0.6VQ64-660VC2850.0114.2VR27547KR27647KR27347KQ60Q55R3794.7KR380680KR37710K22KR378Q54Q52D37

30、R3854.7KC256 0.01SWITCH10u16C573+1KR52347PC5152.2KR522470R52410KR521R591 101/4W2512KR312231Q60Q55137-4.6V0V0V-4.5V0V0V0V5.0V2.4V-4.0V-3.4V0.3V3.8V-0.4V5.0V0.3V0.9V0V-0.4V5.0V5.0V0V-5.2V 0V0V4.9V0V-5.2V5.0V5.0V0V-5.2V4.4V5.0V-5.2VVR3100KR289 22K390K R286R287 22K390R285220K R288R290220K0.01C2031MR291R

31、2931K3.3K R2331MR292C2040.011619R25710KQ23Q22R32222K22KR316Q21-5.2VR32010KR3194.7K100R294D113Q21,52D36R313220K10KR326Q304.7V33KR3580.068 C247 Q31HFI INPUT+5V-5V-5V+5V-5V+5V+5V+5V+5V+5V+5V-5V-5V-5V+5V-5V+5V-5V+5V-5V+5V+5V-5V-5V-5V+5V-5V+5V+5V+5V+5V-5V+14V+5V+5V+5V+5V+5V-14V-14V+5V+5V+14V+14V+5V+5V-5V

32、-5V+14V+14V+14V+14V-5V+14VGND LINE SIGNAL LINE+B-B0V4.9V0V0V0V0V+B LINE-B LINEPICKUP(V-SF1B)(X93-1000-03)(X25- )(A/2)(X25-5020-01) (B/2)MMMECHA ASSY (BLACK:X92-1680-91) (GOLD:X92-1681-01)MMECHA ASSY (X92-1621-01)IC11IC35(3/4)IC35(4/4)(X34-1033-00) (1/2)(X25- ) (F/6)(X25- ) (E/6)TESTINVERTERCONTROL O

33、N/OFFANALOG RFSIGNAL AMPQ50TRKDRIVEMUTEIC9: TC74HCU04AFIC10,12,13,22: NJM4565MIC11: LA9425IC14,15: TA8410AKIC16: NJM2903IC19: TC74HC74AFIC23: LA9420MKMT or LA9420MIC24: LC7830EIC26: CA0002AMIC30: NJM2058MIC35: TC4053BFQ20-22,26,42,43,46,52,53,55,56,60,62,63,66,70,71,74,76: UN5212 or DTC124EUAQ27,67:

34、 2SK163(L,M): Q28: 2SC3311A(Q,R) or 2SC2458(Y,GR)Q23,40,41,48,50,51,54,58,59: 2SC4081(R,S)Q47,57,69: 2SA1576(R,S)D13,19: DA204UD11,14,15,20,26: 1SS33 or HSS104D2123,37: DAN202UD29,30,36 D24,25,2738,39,607D3134: DAP202U : MA110: S5688B or 1SRB9-400INVERTERSWITCHDEEMPHD33D32D31D34D35: 1SV101INVERTERIN

35、VERTER(LD SWSIGNAL)MUTE FETSWITCH(VIA TRK GAIN SEL)Q31: UN5112 or DTC124EUAQ30,61,68: UN5112 or DTA124EUAhLg298.4.26 4:33 PM yW1KMOQSLNPRT( )( )( )( )( )()() )()()()()()()( ()() )( )( )( )1112943L1314LH( )( ) () () )()( () () () () ()()(H5( )()()()(TOLF1633THLDFLD176415THD34CLK14TAO35V/A13TAS36SGND1

36、2TAN37F/R11THI38PWM10TLD39PAC9TCD40PAO8TEL41PA-7TEI42SPO6TE43SPLD5DFI44SPCD4TESI45LVO3HFI46LVG2FEI47LVE1FCD48CLVOTGLFHI1863TOFFFAN1962TESFAS2061HFLFAO2160FZDVEE2259FOCS EMLI23 58CLV- EMCI24 57CLV+ RFG25 56SLCO AFMI26 55SLC- PAS27 54SLC+ AFMO28 53PDI EFMO29 52PD- VCC30 51VCOC CXO31 50VCOO CX32 49C510

37、 0.047C518 0.01C513 0.047470KC231 1200PR386 68KR39018K10KR391C263100P6.8KR3870.47u50C260C2614.7u25R364 47K47KR355R3544.7KR352R351470K100u10C509 +100u10C508+R365 68KC239 4700PR367 27KC240C242 0.1R369 10K330P47PC24568KR36610KR35322KR5151000PC51747KR5120.033C516R514 22K252423201913145600PC246HIL SIGNAL

38、MUTEQ43D14SERVO/AUDIORF AMP0.056C26968KR42947KR421220PC298220KR43482PC2992200PC295470K R427100PC294R424 220K68KR4261.2R422330KR41856KR4154.7K R4203300PC26510u25C293100K R4300.01C29222KR41947KR394R395 220K0.033C264220KR40210KR40318KR401100KR39855100K R4044.7K R39947u10C266+100KR39722KR40054561000PC29

39、71MR42810u16C296+R43347K53R3831K0.01C26258 57100K R435R511 22K R513 33KSWITCH LD(SPINDLE)(SPINDLE GAIN)SWITCH Q40Q41TGL24VCOCTHLD2580TOFF23FSEQ22PCK21TES20HFL19 18TEST317TEST216V/P15CLV-14CLV+13TEST112EFMI11VSS10EFMO9TAI8ISET7AVDD6FR5AVSS4PDO13PDO22VPDO126TEST479DEFI27VDD78CS28JP+77TEST529JP-764.2M3

40、0SLD+7516M31SLD-74CONT232EMPHO73TESTF33P572RES34LRCKO71CQCK35DFLRO70COIN69SQOUT68RWC680R5160.1C519C521 0.0113C520 0.1R517 1.2KR518 56K1420 1924 2387248610KR5250.01C524120PC506220PC40410PC5055PC5121KR509L16120uHC503 150P0.047 C514L17120uH0.1C50147R50427PC502R5061KR505 15KR50315KR360 82K4 +3(2/2)AMP-2

41、1+ -5 6IC16(2/2)7IC16(1/2)3-+1210u25C243C226 1u50R324 220K33KR3210.01C21522KR3230.010.01C217IC12COMPARATOR4827KR37622PC254470P C252 100K R318R317 100KC257 10PQ71IC22(2/2)65+ -7IC9R370100KD19D23INVERTERGND2Q871Q92Q61Q102PR51PR112CK41CK122D31D132CLR21CLR14VCC11KR375IC9100KC281 0.01R520 39KQ634356D20IN

42、VERTER21IC9D-FLIPFLOP147R374OSCIC9(4/76/7)7 6+8IC14-533KR3400.1C229C227 100P100K R331R330 10K R329 10K100K R334R332 82KR333 100KR335 82K4.7R3284.7R3385.6R3375.6R336C228 100PD21D229D26SWITCH(SULDFDERROR2.2K R345180K R34422u50C230+82KR346100K R575100K R574Q53Q57212552-+23IC2212.7K10KR348R349R3502.7K10

43、K(1/2)AMPD.S.P9795680K R343AMP GAIN)(7/7)(2/7)(3/7)MODE CHANGE AMPOR1u50R541150KC54910u25C548R540220KC5690.10.1C552 4700PR53947KC551 220u10R537+8.2KC5354700PR543220K141315COMPVCASTCVCCR542150K161817C53919 0.039C5372120FTCORSTRETCHDOS2CORR. ERRORTBCC5334700PR53310KDEMODULATION FM AUDIOC547 100u10R535

44、15K222423+DELAYDOS1LIMITTERXALCL28R IN L IN GND L OUTR531 1KR532 1KOR0.47u50VCA111210C550+DOS2STRETCHGNDC542 220u10978+C5400.039C5381u50645R5388.2KC5364700PR53410KDELAYXLIMITTERDOS1R OUTGND312+R53615KC5344700P8 910 35151KR4551KR4540.9V4.9V0.2V0V-5.1V1.1V0V0V2.5V-1.3V0V0V0V5.0V0V-5.2V0V-5.2V0V-1.3V0V

45、0V0V0V5.0V-5.1V1.3V0V0V0V0V0V0V-0.5V0V0V5.0V 0.4V 1.6V2.6V2.5V0V1.2V0.2V2.5V1.7V5.0V0V5.0V0V0V-5.1VD38D39C522 27P27PC507L18150uH22KR38198IC9(4/7)0.01C25347KR3928988R373100KC214-14.1VR347488 7(2/2)3211 23141234561231230VC2590.0110KR61047u10C605+220R606Q6921313 12-14.2V0V-1.9V0V0V0V-2.6V-2.8V-2.6V0V-1

46、.9V0V-5.2V5.0V0V0V2.9V0V2.9V2.7V0.5V4.9V4.9V5.0V0V0V4.2V5.0V3.5V0V1.3V0V5.0V4.3V2.5V4.9V4.8V4.9V0VC2580.01100KR3395.0VQ70-14V-5V+14V+5V-5V-5V+5V+5V+5V+5V+5V+5V-14V+5V-14V+5V-5V-5V+5V-5V-5V-5V+5V+5V-5V+5V+5V-5V+5V+5V+5V-14V-14V-14V+14V+5V-5V-14V+5V+5V+5V-14V+14V-14V+14V-14V+5V+14V-5V +5V+14V+5V-5V+5V

47、-5V+5V+5V-5V+14V-5V+14V-5V+5V+5V0V2.1VL2910uH10uHL309PC149PC244.6V 2.2V 2.9V 2.8V 2.5V 2.4V 2.5V 2.4V 2.9V 2.5V0V0V0V0V0V0V1.1V0V0V2.6V4.7V1.0V0V1.5V2.6V2.5V2.5V0V-1.9V2.9V 2.5V0.1C2704.7KR4234.7KR4055.0V0V0V5.0V5.0V0V5.0V0VIC23IC35(2/4)IC19IC35(1/4)IC24IC26INVETERSWITCHMUTEA MUTEDRIVESERVO ERRORCOM

48、PARATORB.P.FSLIDER/SERVOGAIN SELTITL/LOADINGMOTOR DRIVERLD-K300V(K) 2P PCB 98.4.24 8:42 AM yW3UVXZABADWYAAAC() )()()() )()()( ()()()( ()() )()()( ()()()()( )( )()() )()()()()()() (DFLR41 42LRSY43CK244 45C2F46MUTEL47LVDD48LCHP49LCHN50LVSS51XVSS52XOUT53XIN54XVDD55RVSS56RCHN57RCHP58RVDD59 60SBSY61EFLG62PW63SFSY64SBCK36DACKO37CONT138DFCK67WRQ39DFIN66FSX40EMPH165DOUT41 42 43 45R526 1K17 16181531 23150R528220u10C575+R527 150220u10C576+150R5291KR5661.2K R5601KR568