Kenwood-XSG-7-G-Service-Manual(1)电路原理图.pdf

STEREO AUTO REVERSE CASSETTE DECKX-SG7/SG7GSERVICE MANUAL©1999-6/B51-5546-00 (K/K) 229970%SYSTEMCONTROLRECINPLAYOUTLRPhono jack(E63-0046-15)Metallic cabinet(A01-3360-01)Rectangular receptacle(E08-0311-05)Power cord bushing(J42-0083-05)AC power cord *(E30-)Refer to X-E9and X-SA7service manuals (B51-4926-00/B51-5214-00),if you require in detail.rev. modeDolby NRCRLSBCCR10 27 3CR8CRstereo auto reverse cassette deckon/standbyfront loading mechanism Panel *(A29-)Panel *(A60-)Knob(K29-6741-04)Indicator(B12-0319-13)Knob(K29-7572-13)* Refer to parts list on page13.X-SG7/SG7G2ACCESSORIESLEDITEMPOWERDOLBY BDOLBY CRVSMODEUNDER ADJUSTMENTPB CALIBERRLRPB LEVELERRLRREC CALIBERRLRREC LEBELERRLRBIAS DACERRLRPB ALL OKALL OKDISASSEMBLY FOR REPAIRCIRCUIT DESCRIPTIONDemagnetization and cleaningPower : OFF Demagnetization, cleaning, PLAYRecording head, erase head, capstan, pinch rollerDemagnetize the REC/PLAY head with the head eraser. Clean the REC/PLAY head, erase head, capstan and pinch roller using a cotton swab slightly damped with alcohol.Azimuth of the REC/PLAY headTCC-153MTT-11410KHz, -10dBLINE OUT(Lch or Rch)PLAYAdjust the output to maximum and adjust the azimuth adjustment screw for the Lissajous waveform pattern of the oscilloscope to become close to a 45 straight line.II. Printed circuit board adjustment (X28-297)(1)Tape speed (normal)TCC-110MTT-1113KHz (A)PLAYMOTOR VR. Adjust so ; that the frequency is 3KHz at the tape center.(2)Playback levelTCC-130400 Hz(A)MANUAL ADJUSTMENT MODE PLAYADJUSTMENT VALUEUP : DOLBY KEY DOWN : RVS PLAY KEYCHANGE OF ADJUSTMENT MODE CRLS KEYOutput level : -1dBs(3)Bias current TCC-108A 12.5KHz, -21dBm(A)MANUAL TEST MODE REC and PLAY-21dBm(4)Recording levelTCC-108A 400Hz, -21dBm(A)MANUAL TEST MODE REC and PLAY-21dBmRVSFWD<The method of the manual adjust-ment mode.(1) SettingShorting the TEST pin of (X28-)(A/5) TP5 wTP4 with thediode, plug the power cord to theAC wall let.(2) Refer to manual adjustmentmode(3-3), if require moredetails.(A) Measurement Equipment ConnectionGACEGIBDFHJ2 1357 46EB16441 24806540 2511101613BE131101391111111210110155121810BEBBBBB EB EEEEE19EEBB151101IBEBEBEGOREC INPLAYOUTSYSTEMCONTROLACOUTLETEBEBEBEEBEEBBBBEBEBEB EEBEBEBEBEBEBEBEBEEEEBBBBRefer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view)45LMNOABDFHCEGIJK2 1357 46REC: 5.0VOTHER: 0VPLAY,REC,REC PAUSE: 5.0VOTHER: 0V5.1V5.1V4.7V4.8V5.1V11.3V0.6V5.7V6.1V12.3V12.9V4.7V5.1V0V 4.8V0V0V0.6V1.3V1.3V3.2V3.5V1.3V1.3V1.3V1.3V1.3V1.3VNORMAL:2.0VMETAL/CRO2:3.3VSTOP:4.4VPLAY/REC:0VREC: 0VOTHER: 4.3V1.2V6.4VREC:0V6.4V6.5V1.7V1.7V6.5V6.5V6.5V6.5V6.3V12.9V6.5V6.2V6.4V7.0V7.0V6.2V 6.2V7.0V6.4V6.5V6.5V6.5V6.5V6.5V1.7V1.7V6.5V6.4VREC:0V6.4VDOLBY OFF:0V DOLBY ON:5.0VDOLBY B:0VDOLBY C:5.0VPLAY:0V REC:5.0VOTHER:4.3V REC:0VCRO2/METAL:5.0V NORMAL:0V25.8V5.1V12.6V12.9VREC:4.8VREC:0V7.9V7.3V12.9V9.8V3.7V1.3V0.7V3.7V0.7V1.3VPLAY:12.9V REC:0VPLAY:0V REC:5.0V REC:4.4VPLAY:0V0.5V0.8V7.3V0.6V0.5V0.8V12.3V12.3V5.0V11.6V12.2VPIN12345678918 17 16 15 14 13 1112 10 PINNORMALCRO2METALMETAL CRO2NORMAL1.9V4.4V3.2V4.4V2.4V1.9V2.6V4.1V 3.2V 3.6V12.9V0V12.9V1.8V2.9V4.38V2.3V3.4V1.7V2.9V2.64V4.1V12.9V 1.69VMODE:RECORDING IC8 VOLTAGE7.0V10u16C229+C239 1u50+22u16C209+C21022u16+10u16C233+10u16C232+22u16C234+C238 100u16+47u16C21+C214 1u50+1u50C114+C122 0.1u50+C124 0.1u50+C126 10u16+C130 0.1u50+C132 2.2u50+C131 2.2u50C125 10u16C121 0.1u50+1u50C113+C123 0.1u50+C129 0.1u50+()()()()()()()()() )( () )()() )()()()()()()(C158 22u35+( )( )( )( )( )()()( )( )() () () ()( ()()()()()()()()()()()( )( )( )()1u50C23+1u50C24+C14 1u50+10u16C8+C9100u10+100u16C5+)()()( () )()()()( ()( ()() )()()()()()()()( )( )( )() )( () )(1817161514131210PROTECTION CIRCUIT THARMAL DETECTINGPOWER SOURCE STABILIZING+15VDET. ABSO.DET. PEAKDET. ABSO.123DET. PEAK4VCA11DRIVERPRE7 VCACOMPARATOR56GND890.022C225220K R2190.01 C2210.022C227R221 33KC223 560P33KC2280.0220.022C226C2220.01220K R220C224560PR222C23010P1234564123HXL4150PC218220PC22016220P4C2193 2L3EHC217150PEH4 6L93 125C231 0.010.01C23722KR22610 1/4WR22410R2231/4W5600PC236R225 22KC235 5600P68R2334.7KR235K1150K R207390PC20510u16C203+R205160R2030.022 C2076.2K 12435160R2046.2K R206150K R208390PC20678960.022 C20810u16C204+C201 680PR201 150KC202 680PR202 150KQ31,3210mHL7220PC21515KR21115KR21210mH220PC216L8Q4410KR21410KR2131KR22910R23022KR22710R234R2285.6K1/4W1/4W109876543211112R218 1KR217 1KR216 10KR215 10K3.3KR2311KR232Q47,48121189107654132PLAY/RECPLAY LchGNDPLAY RchREC LchREC RchBIAS RchBIAS LchBIASERASEEH GND13V1 2 3 4 5 6GND1OUT12Vz13Vref4Fin5Rin6Vcc17Vcc28Vz29OUT210C20 0.110R45C18 0.1R44 1KR42 1KR43 1K1/4W123 45R1093.9KC1076800PNCL1MPX1.5K R107R158 18K56E. VOL E. VOL71180VREF7778791A3254REF VR3 VR2747576VR1 GND7273DAC SBIT67GND VR1686970VR2 VR3 BIAS6566DAC SBIT64 631AVREF6062 61585957REC OUT876109B/C NR DOLBY1211IREF1314VOLRECTEQLMA+ SBITDACEQ RECEQ-CONTROLERNNNC171615NMHNHC20191821HM22 23 24GHGLGPDAC SBIT25 26 27FMFQF/Q28 29 30BIAS VCC +LMADAC SBITREC OUTB/C NR DOLBY5455515253RECTEQ RECVOL EQ 49504748ADJ. BIASDAC SBIT31 32VCCBIAS33 34 35 36GNDNMCONTRESET MPXSW C/BON/OFF444546434237 38C39 4041LOGIC ILLC10310u16+1u50 C105+R103 33K1u50 C143+1u50 C154+C10410u16+C1061u50+C1441u501.5K R1086800PC1083214R1105L2NCMPX3.9K39KR10539KR106R104 33KC213 1u50+3300PC2113300PC2121.5K1.5KC118 2200PC116 2200P22KR1140.033C112220PR112 2.2K10mHL6R116 560C110C120 2200PR126 10KR130R128 4.7KC134 1u50+R159 24KC136 2.2u5022KR1204.7KR1182.2u50C128+1.1K R122R124 1KR145120KR13947KGPR140R14651K36KGLR141R14756K30KGHR142R14868K56KF/QR143R14943K56KFQR144R150220K220KFMNCNNR127 4.7KC133 1u50R125 10KC119 2200PC115 2200PC117 2200PR115 560C127R1214.7KR117 R11922K1.1K2.2u50+C111C1090.033220PR123 1K47K22KR113R111 2.2K10mHL5C155 1u50C156 1u50C157 1u502.2u50C135+C141 18PC138 1u50+R132 100K C137 1u50+R131 100K R151 100KR152 62K R157 3.9K C139 18PR154 5.6K R153 5.6K C140 56P R155 5.6KC142 100PR156 1K29 32 39 40 41 42 46 503300PR161 6.2K0.112K1.2KR163C146R162C14547KR160 120KR164 22K1 2 3 4 5 6 7 8 910 1514131211R210R2091 2 3 4 5 6 7 8 9101 3 4141350 46 42 41 40 39 32 29631 2 54 6 87109 21 3 4 5 87 91110 1312 14 15REC. RMUTE +BBIAS. R13VBIAS. LCLKDATASTRESETREC. LLEV. L5VS. BUSYS. DATAD. GND A. GNDPLAY. R 120/70400/12.5kPLAY. LOSC ATTOSCLINE MUTE REC MUTELEV. R220PC102220PC101100R102100 R101220P220PC150 C1491.2KR1334.7K R1374.7K R1381.2K R134R13656KR13556K0.01C148100K R168 100K R167 220P C152 220P C151R169 56KR166 10KR165 10K1314143REC MUTELINE MUTE1234567891013 111247KR74.7KR83.3K R1047KR940 41R6 100 R5 100 R3 100 R1 10047K R54R2 100100R41R4010065646766CLOSESOL64OPENCASS. SWFinR. INH ARinREADAVSSCETEXNCTXNC73VSSVDD72A337134703569366837673866396540DATA63CLK62PH SW61NC60OSC OUT59NC58GND57GND56GND55GND54NC53STB52DATA51PLAY/REC50BIAS49CLK SYSTEM IC48ERASE47PLAY SW46LEVEL. R45LEVEL. L44R. INH B43I/I42CPM41E2 PROMSYSTEM IC656667R39 10K41R55 47K42 4344 45 46 47 48 49 50 51 52R56 47KR53 47KR51 47K40383959R59 10K15KR521u50C13+R38 100K10K R371KR460.022C271KR271.5KR26GNDOUTINR22100 1/4W+10u16C44VSSDATAA23CLKA0A12VCCNC15 6 7 8C12 0.01R3522KR331K22KR34R29 100K330 R32 330 R31R30 100KGNDS.DATAS.BUSYS.GND78 77 76 59 75 74 4544 52 51 486162 6347K R5847KR57644342466138 3950494763R361K62180REC F HALL OUT SOL HALF GND 12V MOTOR + MOTOR COM MODE CrO2 METAL REC R OPENCLOSE COM MOTOR MOTOR +EHLch RchGND EH GND+ERASE(BRN)+E (BRN) -E (BLU) +R (GRN) -L (ORG) +L (RED)LchRch+12VGND(BLU)-ERASE-Rch(YEL)+Rch(GRN)(RED) +Lch-Lch(ORG)EARTH(WHT)-R (YEL)GND (WHT)1 2 3 4 5EH EH GND Rch LchGND1234567891013 111221RchLch6543CLOSE OPEN COM MOTOR -(CCW) MOTOR +(CW)FEW REC HALL OUT SOL HALF GND 12V MOTOR +(CW) MOTOR (CCW) COM MODE CrO2 METAL REV REC1.2K 1WR1731.2K 1WR172 R1711.2K 1WR129C147+100u1647KR480.01C10C19 0.01DOLBYHX PROERASE OSCQ45Q46D33Q44Q33Q31Q32IC7(1/2)(2/2) IC7PLAYMUTEPB EQRELAY SELECT. PLAY/RECD32Q41Q43Q42EH CONT.Q48Q47CONT. BIASCN12CN11CN5D18D20CN6Q24Q23Q27Q28Q29Q301234LchRchRECPLAYRch LchQ21Q22MUTED24 D23Q25Q26D22D10D21J2J3CPMCONT.Q6Q8CONT. SOLENOIDQ7Q9D8D9Q11Q12Q10RESETD17Q3D4D19u-COM5VAVRRESETD2D3Q513V AVRE2ROMD12 D11D13D14D16D15SYSTEMCONTROLCN10CN4MOTORDRIVECN2CN3CN9LchERASEHEADR/P HEADRchPHOTO REFLECTORMOTORS6 S5 S4 S3 S2 S1SOLTRAYMOTORS8S7LchRch(BOTTOM VIEW)IC8(X28-2972-71) (C/5)IC6IC1IC3IC4(X28- ) (B/5)(X28 ) (A/5)R/P/E HEADHEAD PCBMECHANISM (D40157415)IC2R254 1KCAUTION:For continued safety, replace safety critical components only with manufacturer's recommended parts (refer toparts list). indicates safety critical components. For continued protection against risk of fire, replace only with same typeand rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out(exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette loadedat playback mode. The measurement value may vary depending on the measuring instruments used or onthe product. Bias circuit DC voltage is measured while in the record mode.DOLBY and the double-D symbol are trademarks of Dolby LaboratoriesLicensing Corporation. Noise reduction circuit made under license fromDolby Laboratories Licensing Corporation.X-SG7/SG7GY26-4450-21QPRSTAC22.0V25.5V12.3V12.9V14.0V13.5V25.8V26.0V5.1V) () () () () ()( ()() )( ()()()()()()()C610u16+C7 47u16+1000u35C11+1000u35C1+1u50C22+) () () () () )()( () )()() )()()()()()()()()() () (KS0KS1KS2KS38025S. BUSY179267827772876297530743132XTALEXTALR. MUTERSTL. MUTENCOSC ATTNC400/12.5kNC120/70NCCR F/SNCS. DATA2TEST 23A. ADJ4M. ADJ5TEST 16KS07KS18KS39KS210NC11NC12NC13NC14KR215KR016KR117NC18LED219LED020LED121NC22NC23NC24NC7475767778C170.0110MHzX1R61 47K R60 47K R62 47K1 2 3 4 5 6 7 8 91020 19 1815 14 161820 19 16 15 14R63 47K R64 47K R65 47K R66 47K3 4 5 6 7Q13160.01 C150.01 C16680 2WR244.7 R231.81/4W47u16C3+C2R2110K2.7 1/4WR2010KR191000P12313 2+5.6KR255.6KR280.01C2512T134105150 R251150R252R2531507LED G21LED G12LED G08KR29KR1 KR061 2 3 4 5 6 7 98101LED G12LED G03KS04KS15KS36KR07LED G28KR29KR110KS28011/4W1/4WP1RECORDING LINEGND LINE SIGNAL LINE22R471/4WR67D66 REC D62PAUSED67 D63DOLBY CD68 D64RVS MODEDOLBY BCRLSS9D49S5D45S10D50S6D46S1D41S2D42D51S7D47S12D52S8D48S3D43S4D44Q13KS03DRIVEQ14Q16 Q15TEST MODEQ212V AVRQ1Q4D7D5D1D6E1E2WH3CN1AC INFWDRVSSTOPFFREWPAUSERECDOLBY NRCRLSON/STANDBYOPEN/CLOSERVS MODES11CN7WH4E3230V50Hz(X28- ) (D/5)(X28 ) (E/5)X-SG7(E)(X28 ) (A/5)D65D61D69ON/STANDBY(RED)(RED)RVS PLAY(GRN)FWD PLAY(GRN)Q45,46 Q44 Q41 Q33 Q31,32 Q25,26 Q23,24 Q21,22 Q1316 Q8,9,11,12,27,28,30,42,43,47,48 Q7 Q6 Q4,5,10,29 Q3 Q1,2 IC8 IC7 IC6 IC4 IC3 IC2 IC1 D61,65 D32 D21 D18 D1117 D8,9,33 D57,10,19,20,2224,4152 D4 D2,3 D1: 2SC2785(F,E) or 2SC1740S(Q,R) : DTC124ESA or UN4212 : 2SC3940A(R,S) or 2SD863(E,F) : DTA124ESA or UN4112 : DTC143TSA or UN4216 : DTA124EUA or UN5112 : 2SD1302(S,T) : 2SD2114K : UN5119 : DTC124EUA or UN5212 : 2SA1286T11 : 2SA1534A(R,S) : 2SC4081 : 2SC3246 : 2SD2061(E,F) or 2SD2012 : UPC1297CA : TA8125S : BA6209 : BR24C01A : PST993DT : HA12167FB : CXP84124144Q : B302522-05D6264,6669: B302513-05 : HZS8.2N(B2) or MTZJ8.2(B) : HZS4.7N(B2) or MTZJ4.7(B) : HZS6.8N(B2) or MTZJ6.8(B) : MA111 : 1SS131 or HSS104A : 1SS133 or HSS104 : HZS5.1N(B2) or MTZJ5.1(B) : HZS6.2N(B2) or MTZJ6.2(B) : KBP02ML-6127DTA124ESADTC124ESADTC143TSAUN41122SC1740SUN51192SD2114K2SD2061UN4212UN42162SD20122SC4081DTA124EUADTC124EUABA6209UPC1297CAHA12167FBTA8125SUN52122SA1286-T112SA1534A2SC32462SC3940A2SD13022SD8632SC2785434414401436CGLM417426426412411409436424408407425431432402 420CBx2CEx5CIx2CHx2CFx2CDCCCACBx2CA405430410406813434414401436CGLM417426426412411409436424408407425431432402 420CBx2CEx5CIx2CHx2CFx2CDCCCACBx2CA405430410406813434414401436CGLM417426426412411409436424408407425431432402 420CBx2CEx5CIx2CHx2CFx2CDCCCACBx2CA405430410406813434414401436CGLM417426426412411409436424408407425431432402 420CBx2CEx5CIx2CHx2CFx2CDCCCACBx2CA405430410406813433CJ2111GREASE(EM-30L)2GREASE(MZ-2400):410-0013-05:410-0019-05123ABParts with exploded view numbers larger than 700 are not supplied. 10X-SG7/SG7GEXPLODED VIEW (MECHANISM: A)CK556502524554550530B 530A526507CQ508562CP560CS555551CS525RPEH531537543512552573570541547 515518510557559521511571CO501580568CK563519553545505529572558527564546515CR528521575542576581585CMCK544CO582517506565CNx3CTMM568561 815824826804803815809827818805825829811820812 816801816802CKx2CKx2828825817819810808509574530B530A22212222222222221GREASE(EM-50L)2GREASE(EM-30L):410-0014-05:410-0013-05CUCU123CDParts with exploded view numbers larger than 700 are not supplied. 11EXPLODED VIEW (MECHANISM: B)X-SG7/SG7G12X-SG7/SG7GParts with exploded view numbers larger than 700 are not supplied. S 5 S 1J 2J 3S 8S10S12S 9S 6 S 2S11S 7S 4 S 3rev.modeDolby NR CRLSX-SG7REC PLAYIN OUTSYSTEMCONTROL604606645611638637636603646727760728601622BBBBBBBCx4Dx2DEEEx2EFGx2 X28(A/5) X-28(E/5)X28(C/5)X28(B/5)760630650631629640702725726760760635621641708715619620ABCDEFGø3x6 (BLK)ø3x8 (BLK)ø2.6x10ø3x5ø3X8ø3X8 WASHERM4x6:N09-1445-05N89-3008-45N82-2608-46N84-3005-46N89-3008-46N09-0287-05N86-4006-45632A12E GFEXPLODED VIEW (UNIT)13X-SG7/SG7GPARTS LIST New PartsParts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pas fournis.Teile ohne Parts No. werden nicht geliefert.Ref. NoAdd-ressNewPartsDescriptionDesti-nationRe-marksParts No. New PartsParts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pas fournis.Teile ohne Parts No. werden nicht geliefert.Ref. NoAdd-ressNewPartsDescriptionDesti-nationRe-marksParts No.C1 C90-3676-05 ELECTRO 1000UF 35WVC2 CC73FSL1H102J CHIP C 1000PF JC3 C90-3649-05 ELECTRO 47UF 16WVC4 C90-3658-05 ELECTRO 10UF 16WVC5 C90-3650-05 ELECTRO 100UF 16WVC6 C90-3658-05 ELECTRO 10UF 16WVC7 C90-3649-05 ELECTRO 47UF 16WVC8 C90-3658-05 ELECTRO 10UF 16WVC9 C90-3643-05 ELECTRO 100UF 10WVC10 CK73EB1H103K CHIP C 0.010UF KC11 C90-3676-05 ELECTRO 1000UF 35WVC12 CK73FB1H103K CHIP C 0.010UF KC13 ,14 C90-3253-05 ELECTRO 1.0UF 50WVC15 CK73FB1H103K CHIP C 0.010UF KC17 CK73FB1H103K CHIP C 0.010UF KC18 CK73FB1E104K CHIP C 0.10UF KC19 CK73EB1H103K CHIP C 0.010UF KC20 CK73FB1E104K CHIP C 0.10UF KC21 C90-3649-05 ELECTRO 47UF 16WVC22 C90-3680-05 ELECTRO 1UF 50WVC23 ,24 C90-3253-05 ELECTRO 1.0UF 50WVC25 CK45FF1H103Z CERAMIC 0.010UF ZC27 CK73FB1H223K CHIP C 0.022UF KC101,102 C91-0749-05 CERAMIC 220PF KC103,104 CE04LW1C100M ELECTRO 10UF 16WVC105,106 CE04LW1H010M ELECTRO 1.0UF 50WVC107,108 CK73FB1H682K CHIP C 6800PF KC109,110 CK73FB1H333K CHIP C 0.033UF KC111,112 CC73FSL1H221J CHIP C 220PF JC113,114 CE04LW1H010M ELECTRO 1.0UF 50WVC115-120 CQ93FMG1H222J MYLAR 2200PF JC121-124 CE04LW1H0R1M ELECTRO 0.1UF 50WVC125,126 CE04LW1C100M ELECTRO 10UF 16WVC127,128 CE04LW1H2R2M ELECTRO 2.2UF 50WVC129,130 CE04LW1H0R1M ELECTRO 0.1UF 50WVC131,132 CE04LW1H2R2M ELECTRO 2.2UF 50WVC133,134 CE04LW1H010M ELECTRO 1.0UF 50WVC135,136 CE04LW1H2R2M ELECTRO 2.2UF 50WVC137,138 CE04LW1H010M ELECTRO 1.0UF 5