Kenwood-KTCV-500-Service-Manual电路原理图.pdf

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1、TV TUNERKTC-V500E/N/PSERVICE MANUAL 2002-1 PRINTED IN KOREAB51-7884-00 (K) 3397KTC-V500E4-CHANNEL DIVERSITY TV TUNERTV ANTENNA INPUTTO MONITOR UNITThe following reference numbers with accessory parts are the same reference numbersused on EXPLODED VIEW and PARTS LIST.9DC1586X2KTC-V500E/N/P2ANTENNA SW

2、 TUNERVIFSAWCIRCUITDIVERSITY VIDEOSWDEMODULATORVIF VIDEOSWMATRIXRGB SWDEMODULATORVIFSAWSIFDEMODULATORFMMIXSWDEMODULATORAMOSCNOISECANCELLERLPF SOUND (L/R)756dB6dB75RGB-OUTVIDEO8V AVRSW14.4VACCAVRIC401 IC400Q103Q101IC300IC200IC301IC504IC502IC202IC203IC700ACC 5VQ7028V AVRQ7035V AVR5V AVRQ705Q704A 8VV 8

3、VV 5VA 5VIC701DC/DC+30VQ701REGULATORPOWER SUPPLYKTC-V500E/N/P (E/K/M)NTSCPALSECAMSYNCDECODERSDASCLSCLSDAOTHERSL: 38.9MHz: 33.9MHzIBG : 33.4MHz: 32.9MHzLDK/L: 40.4MHz: 32.4MHzFM/AMLD/KB/GI22.7MHz21.7MHz22.2MHzFM/AMP. ON10.7MHzBLOCK DIAGRAMKTC-V500E/N/P3COMPONENT DESCRIPTIONELECTRIC UNIT (X25-928x-xx)

4、REF. No.FUNCTIONOPERATIONIC200TV VIF/CHROMADetects VIF, and processes chroma.IC202VIDEO AMPLIFIERAmplifies G and B signals up to 6dB at 75 ohms.IC203VIDEO AMPLIFIERAmplifies SYNC and R signals up to 6dB at 75 ohms.IC300TV VIF/SIFDetects VIF and SIF (Euro models one is for diversity).IC301AM DETECTIO

5、NDetects SIF (AM).IC400VIDEO SWSwitches diversity video signal.IC401TV DIVERSITYSwitches TV antenna.IC502OPERATION AMPLIFIERLPF & amplifier.IC504NOISE CANCELERCancels noise.IC700AVR5V local regulator.IC701DC/DC REGULATORSwitches DC/DC voltage.IC702AVR8V local regulator.IC800SYSTEM u-COMControls func

6、tions.IC801RESET ICResets system u-com.Q100IF SWSwitches SAW filter input IF.Q101SIF AMPLIFIERAmplifies SIF.Q102IF SWSwitches SAW filter input IF.Q103VIF AMPLIFIERAmplifies VIF.Q201,202BUFFERCreates H-sync pulse.Q203,204BUFFERBuffers video signal.Q205-207RGB MUTEMutes RGB signals.Q208-210RGB BUFFERB

7、uffers RGB signals.Q211,212VIDEO BUFFERBuffers video signal.Q300-302CLOCK SWSwitches clock.Q303,304VIDEO BUFFERBuffers video signal.Q305SYNC PIF SWSwitches sync PIF frequency.Q306,307S-METER DC AMPLIFIERAmplifies s-meter DC.Q308VIDEO BUFFERBuffers video signal.Q309VIDEO MUTEMutes TV video signal.Q40

8、0VIDEO MODE SWSwitches diversity video mode.Q401ADJUST MODE SWSwitches diversity adjustment mode.Q500,501AUDIO MUTEMutes audio signal.Q700Q701 DRIVERDrives Q701.Q701POWER SWSwitches back-up power supply.Q7028V AVRSupplies power to TV front-end and IF circuit.Q7038V AVRSupplies power to IC200.Q7045V

9、AVRSupplies power to TV front-end and IC301.Q7055V AVRSupplies power to video circuit.Q706B.U. DETECTIONDetects back-up.Q800PANEL/BASS RESET SWControls reset for panel and bass.KTC-V500E/N/P4MICROCOMPUTERS TERMINAL DESCRIPTION(X25-) IC800 : SYSTEM u-COMPORTNo.PORT NAMEI/OFUNCTIONOPERATING CONDITION1

10、DIVODiversity adjustment mode (Test mode).“H“ : Adjustment mode on (Diversity forced off).2-4-5DKOIF switch (When state of PAL-D).“H“ : DK area.6IFIF switch (Group 3 when state of PAL-I).“H“ : I area.7BGO OIF switch (Group 1/2 when state of PAL-B/G).“H“ : BG area.8-9VDD-5V power supply.- -10X2-Main

11、system clock oscillation (12.28MHz).-11X1-Main system clock oscillation (12.28MHz).-12VSS-GND.-13,14-15RESET-System reset.“L“ : Reset.16SC-CONICommunication between panel and box.-17MC-REQICommunication between panel and box.-18B.U.IBack-up detection.“H“ : B.U. OFF. “L“ : B.U. ON.19P.ONOPower-on.“H“

12、 : P.ON OFF. “L“ : P.ON ON.20,21-22REF.CONOA/D converter reference voltage.ADC comparator power supply switch.23AVDD-A/D converter analogue power supply.-24AVREF 0-A/D converter reference voltage.-25SDISD.-26S-METERIS-meter.-27-32-33AVSS-GND.-34,35-36AVREF 1-Analogue reference voltage.-37FLASH 1OFla

13、sh 1.-38FLASH 2OFlash 2.-39FLASH 3OFlash 3.-40-43-44SC REQOCommunication request in panel.-45MC DATAICommunication data in panel.-46SC DATAOCommunication data in panel.-47MC CLKICommunication clock in panel.-48-49L2OVideo reception switch (Only in France).“L“ : VHF receiving. “H“ : 2,3,4CH receiving

14、.50AM/FMOAM/FM audio reception switch.“L“ : AM (Only in France). “H“ : FM (Without France).51,52-53TYPE 1IDestination switch.“L“ : For in Europe. “H“ : For in Japan.54-58-59PLL-DATAOPLL data.-60PLL-CLKOPLL clock.-61PLL-ENBOPLL enable.-62TV/V MUTEOTV tuner mute / Video mute.“H“ : Mute on. “L“ : Mute

15、off.63-71-72VSS-GND.-73-78-79SP MUTEOSpeaker audio line mute.“L“ : Mute on. “H“ : Mute off.80-81,82VDD-Power supply.-83-86-87TIMEOWaiting configuration for communicationbeginning with machro IC.“L“ : No waiting. “H“ : 3 seconds waiting.88-93-94TEST-VPP voltage for flash memory writing.“L“ : Usual op

16、eration. “H“ : Flash memory writing .95-98-99SCLOIC2 clock.-100SDAI/OIC2 data.-KTC-V500E/N/P5ADJUSTMENTNGOKNGX25 CircuitAdjustmentSpecification (K:ForNorthAmerican Markets)ItemAdjustmentmethod/AdjustmentvalueConditions1. Videodetection coiladjustmentL3031. TurnVR301 RF-AGC fullyto the right.2.ApplyD

17、C2.0VtoTPIFAGC(IC300 pin36).3. Feed fo=45.75MHz,Mod=1kHz,AM60%, Level=100dBinto TPIF(A100pin8).4.Observe the TPVIDEO (IC300 pin8)waveform on an oscilloscope andadjust L303 for maximum level.MaximumNoANTsignalIf the waveformisclipped,slightlyincreasetheDCvoltage.ACrange2. Audiodetection coiladjustmen

18、tL3001. TurnVR301 RF-AGC fullyto the right.2. Feed fo=41.25MHz,NoModulation, Level=94dBinto TPIF (A100pin8).3. Connect a voltmeter to TP SIF(bothendsof R314)and adjustL300 for0V 0.01V.NoANTsignal3.S-METERadjustmentVR3004.RFAGCadjustmentVR3011. TurnVR301 RF-AGC fullyto the right.2. Feed a 30dB11CHcol

19、orbarRF signal into the ANTinputterminal.3.Audio(P/Sratio-6dB)no modulation.4.Connecta voltmetertoCN300and adjustVR300 SMETsoitreads3.5V 0.05V.5.Setthe RFsignal to70dBand adjustVR301 RF-AGCsothatthevoltmeter connected to CN300reads4.5V 0.05V.ostpone adjusting VR301topreventAGChavingeffectat 30dB.Ens

20、urethe RFAGCadjustment isperformedafterthe S-METERadjustment.5. Diversityfree runfrequencyadjustmentVR4001. Connect a frequencycounterto CN400.2. Usingthe remotecontrol unit TV/NAVIbutton, switchto adjustmentmode.3. Adjust VR400 15kHz soasto obtain 15734 10Hz.NoANTsignalTestmodeX25 CircuitAdjustment

21、Specification (E:ForEuropean Markets)ItemAdjustmentmethod/AdjustmentvalueConditions1.Diversityvideodetectioncoil adjustmentL3031. InputRFsignal 70dB9CHstairstep intothe ANTinput terminal.2.Observe the TPVIDEO (IC300 pin8)waveform on an oscilloscope andadjust L303 sothatthe edgesof syncchip and pedes

22、tal are horizontal.PALB/GTurncoloroff.2. Audiodetection coiladjustmentL3001. InputRFsignal 70dB9CHbarinto the ANTinputterminal.2. Connect a voltmeter to TP SIF(bothendsof R314)and adjustL300 for0V 0.01V.PALB/GP/S ratio10dB3. Diversityfree runfrequencyadjustmentVR4001. Connect a frequencycounterto CN

23、400.2. Using the remotecontrol unitTV/NAVIbutton, switchto adjustmentmode.3. Adjust VR400 15kHz soasto obtain 15625 10Hz.NoANTsignalTestmodeKTC-V500E/N/P6ADJUSTMENTX25 CircuitAdjustmentSpecification (M:Forthe Other Markets)ItemAdjustmentmethod/AdjustmentvalueConditions1. Videodetection coiladjustmen

24、tL3031. TurnVR301 RF-AGC fullyto the right.2.ApplyDC2.0V to TP IF AGC(IC300pin36).3. Feed fo=38.0MHz,Mod=1kHz,AM60%, Level=100dBinto TPIF(A100pin8).4.Observe the TPVIDEO (IC300 pin8)waveformon an oscilloscope andadjust L303 for maximum level.MaximumNoANTsignalIf the waveformisclipped,slightlyincreas

25、ethe DCvoltage.ACrange2.Audiodetection coiladjustmentL3001. TurnVR301 RF-AGC fullyto the right.2. Feed fo=31.5MHz,NoModulation, Level=94dBinto TPIF (A100pin8).3. Connecta voltmeterto TP SIF(bothendsof R314)and adjustL300 for0V 0.01V.NoANTsignal3.S-METERadjustmentVR3004.RFAGC adjustmentVR3011. TurnVR

26、301 RF-AGC fullyto the right.2. Feed a 30dBCHINA9CH colorbarRFsignalintotheANTinputterminal.3.Audio(P/Sratio-6dB)no modulation.4.Connecta voltmetertoCN300and adjustVR300 SMETsoitreads3.5V 0.05V.5.Setthe RFsignal to70dBand adjustVR301 RF-AGCsothatthevoltmeterconnected to CN300reads4.8V0.05V.Postpone

27、adjusting VR301topreventAGChavingeffectat 30dB.Ensurethe RFAGCadjustment isperformedafterthe S-METERadjustment.5. Diversityfree runfrequencyadjustmentVR4001. Connecta frequencycounterto CN400.2.Usingthe remotecontrol unit TV/NAVIbutton,switchtoadjustmentmode.3.AdjustVR400 15kHzsoasto obtain 15625 10

28、0Hz.NoANTsignalTestmodeABDFHJCEGI2 1357 46IC400Q704 D702Q306D302IC800Q21 1IC301IC701IC502IC300IC702Q210Q209Q208IC200Q200Q309CN2D700D100Q100Q102IC202 IC203Q300Q301IC401Q400IC801Q501Q500Q705SYNTHESIZER UNIT X25-928x-xx (J74-1339-12)Q307Q302A100CN400IC504Q703Q702Q701CN300J1J2J4J3J100P100IC700BEBEEBEBBE

29、BEBEBEBEBEEBBEEBBEEBEBEBBEL301R240L304L104C207R336W300C424L201L400C233L103R209R210R204R413R208R81 1C403R219R220R217R215C224R223R222R221R201C206R200C228R218R216C217C215C226C222C225C221 C220R237R207C201R202C200C213C214R816R817R818R804R803R802R819C100C101R110R109R104R100L100C237C707R41 1L108R412C421C42

30、2L113L112L106L105R410C423L111L110R516C524C522L200R813R815R235R832R512C509R510R509C508R511VR400C242C239L202VR301C306R523C529R521R323R324W400C400C402C401R710R838R839F700R837R522R309X800C409C708R517VR300C413C414C416C418184571135 4OGI2650255175761001112333122244341 8916148511155111151933 5120325264IGO1

31、48 51 4581121324L1071201921BEE BBE12112RF-ACC SMET15KHzDIVSMET.ACCL302CF100CF101CF301C801C223X303X201C709CF302C202C216C203C705C107C110C112C111C323C332C330X302X301X300CF102C410C720C718L701C115C710C722C300C706C320C714C713C238C241C335C521C527C208L300L303C234C701C528C711C532C506CF300CF200C232C71511 24 5

32、8Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)78SYNTHESIZER UNIT(X25-928x-xx)Ref.No.AddressIC2004EIC2025GIC2034GIC3003DIC3012CIC4006EIC4015DIC5022FIC5041EIC7003HIC7013BIC7025HIC8003GIC8012HQ1004DQ1024CQ2003EQ2085FQ2095EQ2105EQ2115EQ3003DQ3012D

33、Q3022DQ3062DQ3072DQ3092EQ4005DQ5002FQ5014GQ7013IQ7025IQ7035IQ7046HQ7054HKMOQSLNPRT2 1357 46C119C126C125L101R335R71 1R1 19C717R228R226C227C231R231C124R230C229R224R227R229R700R814C723C704C123R239R1 13R225R234R233R232C211C205 R203C204R206R21 1R212R205R213R214C212C209R117C327C331R328C800C703C702R118C127

34、R821R820C804R101C114R107 W100W101R108C120W102R103C1 18C128R1 16L109R120L1 14R121C121C322C122R304R305R306C307W301R302R301R300R307R713R327C321W302R325R326R332C721R322R515C525R514C519C518R115C117C517C515R312C1 16R406R407R408R409C511C415C417C419C420R703C408R404R401R402C406C412C510R403C507C407C530R520R51

35、9C405R400C531C404C103R106C102R112R102C329R105C240C235C309R313C304 C303 R340C302R333R334C308C310C337R31 1C301C336C313C317R331R339C319R320C316R337R319R338R310C31 1C312C314R314C318C104R405C108C109R702C719R704R342R341R343R346R347C716R834R807R809C803C802R827R823R822R824R826R825R801R706R707C712 R708R712C3

36、40C305R351W303C339R308L1 15R808R831R833C1 13R303R829R828R830R518C328R350R349R836R835C334C333C324C325R321C326R329R330R122W103C338R345R344R238R810R812R236C700R709C411R705D710Q303D103Q401D104Q203Q204D201D705Q101Q212Q207Q206Q205Q202Q201D709D102D101Q103D300D301D708Q305D303Q304Q308D707D706Q700Q800Q706D105

37、SYNTHESIZER UNIT X25-928x-xx (J74-1339-12)BEBEBEBEBEEBBEBEBEEB EBEBBEEBBEBEBEBERefer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Foil side view)910SYNTHESIZER UNIT(X25-928x-xx)Ref.No.AddressQ1014QQ1034QQ2014OQ2023OQ2035PQ2045PQ2054OQ2065OQ2075OQ2125PQ3033PQ3042OQ3053

38、PQ3082PQ4015QQ7004LQ7062MQ8002MABDFHJCEGI2 1357 46(K,M) TYPEIF AGCRFAGCD300D301Q300Q301Q302ONLY(K) TYPED302(K,M) TYPE ONLY(E) TYPESMETD303Q305(E) TYPE ONLYVIDEOQ303Q304SIFCN300SMETAGCQ308(K,M)Q309(E) TYPE ONLY(K,M) TYPE ONLYQ800(K,M)ONLYQ501Q500J100D709D710(E) TYPED700D702Q706D708Q703D705Q701Q700(E)

39、 TYPE ONLYQ704D706Q705D707AVRB.U. DETECTIONDC/DCREGULATORPOWER SWQ701DRIVER8V AVR5V AVR5V AVROPERATIONAMPLIFIERMUTE AUDIONOISE CANCELLERAMDETECTION(E) TYPEVIDEOMUTETYPEONLYVIDEO BUFFERVIDEO BUFFERTV VIF/SIFONLYONLYTYPE (M,E)CLOCK SWSYSTEM u-COM TYPEONLYRESETICPANEL/BASSRESETSWONLYQ7028V AVRAVRONLY(K

40、,M) TYPE ONLYQ307S-METERDC AMPLIFIERQ306TYPE ONLY(K,M)AMPLIFIER VIDEOVIDEOAMPLIFIER(E) TYPE ONLYONLY(K,M) TYPEONLY(K)TYPE(M)TYPEONLYP100SYNC PIF SW22K22K22K22K22K22K22K22K4.7K4.7K22K22K2.2K10K10K47K10KDIV1SDA1002345DK6IF7BG89VDD10X211X112VSS131415RESET16SC CON17MC REQ18B.U.19P. O N202122REF . CON23A

41、 VDD24A VREF 025SDSCL99 98 97 96 95TEST94 93 92 91 90 89 88 87 86 85 84 83 82VDD81 80SPMUTE79 78 77 76VSS7573747172697067686566PLL-CLKTV/V MUTE636461PLL-ENB6259PLL-DA T A605758535556TYPE 154515226SC DATAAVREF 1S-METER2827 313029 34A VSS3332 3635 39FLASH 2FLASH 13837FLASH 34140 444342MC DATASC REQ464

42、5MC CLK494847AM/FML250RF ADA34353637SIF IN 2VIF IN 1383940GND 141RF A OUTVREG424344AF T OUTOSC IN 233 3032 31OSC IN 129 28FLINVREF27 26 25 24 23VCC 1SMTC 2V OUT16321 54 87 10916GND 2SL OUTSMA 2SIF2021181917VCC 2AMDCP1214151322VIF 1 VIF 2 SSCAFTAMDCAV OUT2SMTC 1A OUTVIF IN 2I FA O U TI FA I NSIF IN 1

43、VCC 3 M OUT SD OUT GND 3 FLAB SVAFLOUTSMA 1AFC OUTAMDCOS OUTAMDC IN11AF OUTAM INAM OUTNC5CREFCAGCNC2IF IN 1SWEXT IN109VP1GNDMUTEVP212111413IF IN 2NC15161578563412PNR INNFB P ASSPWGNDBREF37856412PILOT INLPF OUTPNR OUTGA TE1211109AGC2A IN-V-43A IN+B IN+B OUTB IN-A OUT1V+76582 14 3GNDNC6 NC7FBDRIVENC3

44、NC2VCC5 7 8647u6.3C335+W3000.01C31322KR335100PC33610KR33610uHL3010.1C319CF3023.3KR3330.01C3370.47C3080.1C3102.7KR312R31110K5KVR301R3341.8KTP110KR3071000PC307C30522.7/21.8MHz21.7/20.8MHz 22.2/21.3MHzR302R300 2.2KR301 2.2KR306100K R304 100KR305 100KX300X301X3025672.2KW301X30330.550MHzC304CF300OUTIN100

45、KVR30027KR3030.022C3020.01C3060.1C3011KR3400.01C33847KR320C3170.01C31610KR32822PC331R331 2.7K2200PC327C329 56P10KR3274.7K R32510KR326R31933KTP20.22C328330R324330R323470R332470R3226.8K R3100.1C31247u16+ C3001.5KR314C309 220P0.01C311R313 1KL3000.1C31439K33KR308TP3 TP421C3180.022330R33810uH L304330R339

46、180R337OUTINR824 100KR823 100KR822 100KR818 100 R817 100 R816 10044 45 4746393837100K R821R819 1K C804 0.1100K R820181716657110KR804100K R80712.228MHzX800330u6.3+C800123SUBGND OUT45VCCNCC8020.22C803R80947KR833 5.6KR803100R831 5.6K100 99R802100R801100KR827100KR828 1KR829 1KR830 1KR826R825615960100K R

47、808100KR834100K R835100KR8360.47u50C332+3.9KR3290.01C3264.7u25C330+47KR3210.022C3250.022 C3248.2KR3302200PC3332200PC3340.01C32210u16+C32310uHL302120KR35018KR349W3020.22 C321R514 27K0.047C5246.8KR516C521 10u16+C519 2200PR515 12KC522 0.047C525 0.1C527 47u16+C518 0.1C517 0.022C5290.224.7KR5214.7KR52210

48、u16C528+47KR523A+5VV+5V A+8V T+8V47KR5121000PC50947KR5100.22C5101000PC51 110KR51 147KR509360R51710u16+C532180P C50847u16C506+C5073214658111091271316151420191817R235 75R236 75R238 75R237 75R813 1KR812 1KR81 1 100R810 100R832 100R814 100R815 1K765846454415164717100R519100R5202200PF7000.01C704OUTCMNIN0

49、.01C7022.2u50C705+0.01C7030.1C7082200u16+C7010.01C7000.01C71222KR70810KR70622KR707100KR7121.2K R7134.7u50C718+4.7u50C720+33u16C706+0.1C7074700uHL701220u16C709+220u10C713+0.01C7231KR703680R70115KR7001/2W47u16C710+100u6.3C714+1.8KR704C716 0.01A+5VC71 147u16R7051.8K+C717 0.01C715+100u6.3V+5V T+8VBU+5V15V+5V T+8VA+8VA+5V1V+5V T+8VA+8VA+5V18BU+5VBU+5VQ303,30410PQ300-3020.1C8010.1Q800R702220C722 220u10C721 0.01R710GNDVINVREFR71 14.3K