Kenwood KRF-V7020D Service Manual

Also see for KRF-V7020D: User guide Instruction manual

Contents

AO AQ AS AU AWAP AR AT AV AXTP3R38410KC335100u50R385 R38651K 10K++62V+62V15V+35V+15V+62V15V+35V+15V1/4W4.7KR38762V+35V62V35V+62V+C4233u16R5147KR2410KR194.7K 47KR3468KR49R504.7K+62V35VR48100K10KR471/4WR2310KR13 +62V35V3900PC251.8KR292R27933K1.8KR28056KR278100KR276+C263900PC265+2.2u5056KR277R275100K+B100u10C2671KR28156KR301 C281R29922P1KR282100u10C268++1K+ C2662.2u5022PR30056KC28247u50C29 +10u100+TH1R81.5K62V+10u100+35V+35V10u100++62V62V1WR22 3.9KC2247u50+SUB GND/NP1234+VHTP+VLCOMSUB GNDCOMCOM658791110121413-VH+COMP-COMP-VLFL OUTNC+62V62V+35V+62V+62VC32 10u100FR OUT1615171918-V(PRE)+V(PRE)1NFFL INSUB GNDFR IN2NF21202221CC+VHP1R2891000P35V+62V15V+35V+15V+62V15V+35V+15VR28556KR2831.8K+C2722.2u50R2841.8KR286+47u50C30C33 3900PC34 3900PC273100u10+C2712.2u50R294R2871.8K+R305 1KR306 1K22P56KR2911.8K+C2772.2u50R29356K62V+62VC279100u10C274100u10R290R2881.8K+33K1KR297R2951.8K1KC28422P +22PC285 R3091K2W0.1R33930V+35VR27+62V30K3.9K 1W+R251W3.9KR261K+62VR30356KC28314 LS OUTCOMSUB GNDCOMCOM54876910111213-VL-VH+COMP-COMP+VLNCRS OUT171615181920-V(PRE)+V(PRE)LS IN1NFCCC+62VR30456KR30756K+62VR361R363C299C IN3NFRS IN2NF22212324COMC OUT26250.1 2WR32630KR3301000PC294R3161000PC28830KR3291000P30KC2932W0.1R3250.1 2WR312R315C2871000PR33133KR310470R365R332470470R318470R317470Q17-21R3110.1 2W+4.7u35C36+62VR3215KR3312K6.8KR29220u6.3C3522KR30+3.3KR31R6+BB+B+BB+BB+BBB+B62V35V62V30V62V35V15V30V62V35V30V62V35V30V62VC31C23C2410u10010u100C40 C39R313R31424K24KR327R32830K24K47u50C21+3.9K 1WR21C263 100PC269 100PC270 100PC264 100PC247 100PC249 100PC250 100P C252 100PC248 100PC251 100P24K24K2.7K62V62VABB.COUNTRYGENERAL MARKETC8CHINAAUSTRALIA X8MALAYSIAPXCOUNTRYI8M8ABB.Y8GENERAL MARKETDESTINATIONAUSTRALIACHINAX7C7DESTINATIONCOUNTRYPXABB.Y7M7DESTINATIONCANADACOUNTRYU.S.A.P7ABB.K7CANADAU.S.A. K8P8K6U.S.A.DESTINATIONCANADA P6DESTINATIONCOUNTRY ABB. UNIT No.3-020-720-223-010-710-21UNIT No.0-10UNIT No.0-11R1347KUNIT No.0-10UNIT No.NOC3A A A A AB BBBBNO YESC1,2NOD1YESD4YES47K NONOC1,2R13 D1C3YESD4YES47K NONOC1,2R13 D1C3YESD4YES20KYESNONOC1,2R13 D1C3NOD4YESYESNOC1,2R13 D1C3NOD4NO NOYESNOSHANGHAI V7 42-10 NOYESYESNOYES47K 47K20KNO NOYES YES1R43R44 1IC3,IC4 0V60.3V 32.7V32.2V -24.7V24.7VPIN No. 21 43 65-60.2V-32.7V 0V-32.2V87 9-11 12-1557.5V-55.0V1716 20-53.7V0V18,190V -32.0V0V23,2421,22 250V26IC4 ONLY47R46R3021KR41 470KNO YESNO YESPOWER IC (C, SL, RSch)D32Q41D33D31D26Q1FIRST OFFQ38Q37 Q36Q32Q31B Q40 D28D11 D12POWER IC (FL, FRch)Q2-30V AVRCchQ19Q20Q18Q17Q21SRchSLchFRchFLchQ23Q25D18D17LIMMITERCURRENTPROTECTQ34Q24A+B AVR-B AVRVR-357 (X09-6160-10) KRF-V8020D (X09-616X-XX)KRF-V7020D (X09-616X-XX) / (X09-6342-10)VR-309 (X09-6160-11)VR-307 (X09-6160-10)D30D13 D14POWER IC(IC3,4) DC VOLTAGED15D16(X09-616X-XX) (A/3)IC3 IC4-56.3V0V60.1V0.7V0V60.1V-55.6V58.6V-31.6V-32.2V-58.6V0V0V0V59.6V0V0V59.7V0V0V 59.1V0.6V0V0V0V0V60.3V 58.0V58.6V-60.2V60.3V0V0V0V0V59.6V59.6V0VThe DC voltage is an actual reading measured with a high impedance type voltmeter with a cassetteloaded at playback mode. The measurement value may vary depending on the measuring instru-ments used or on the product. Bias circuit DC voltage is measured while in the record mode.CAUTION: For continued safety, replace safety critical components only with manufacturer's recommendedparts (refer to parts list). indicates safety critical components. For continued protection against risk of fire,replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resis-tance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit)before the appliance is returned to the customer.