Technics-SAEH790-rec-sch 维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库From POWERTRANSFORMER18W501234567912131415161718A.GND+B(10V)SUR LSUR R191110CT.GNDSH FL1DATAD.GNDTUNER L/CTUNER RchLch INRch INS.WMIC-B(-10V)V.GNDCS/REQCLKSH FL220SYNC+B5RchRch-B3To SOUND PROCESSORBLOCK DIAGRAMC2BBFD000404IC901SYSTEM CONTROL / FL DRIVERch94SH CS97SH CK9596SH DOSH DISHSYNC21SH REQSW CONT.12X0X114ABC11109G8213BU4053BCFE2IC201SIGNAL SELECTOR115Y1Y0VDD16+B4VSS7-B36ST/AV.6CHMUTINGQ605MUTINGQ607(Q608)93MUTE3MUTINGCONT.+B4Q90210SEL/TUNERMIC DET25+B8SA-EH790(E,EB,EG,EP) BLOCK DIAGRAMAM ANTFM ANTZ120 TUNER PACK(RAN0005EM-2)8(6)3791110DO4+B215DET2+B1CLDICESDLC72 CELC72 DI/ST345LC72 DO2100SDLC72 CKFL1FL2Lch(Rch)GND+15V+7VRadioFans.CN 收音机爱 好者资料库SPEAKERSR chPHONESVR901(VOLUME)2423VR JOGAVR JOGBKEYSWITCH(S901915)1920KEY TUKEYKARAOKEQ901,D904RESET12RESET+B890VDD2+B9VDD1VDD3VDD4184672C2BBFD000404IC901SYSTEM CONTROL / FL DRIVE29REMO-CONZ901(REMOTESENSOR)+B818G3037P1383845,47505271,7378FL901FL DISPLAYD933,D93479REGIN082TIMER83S.W LEDD951(DIGITALS.WOOFER)81STAND-BYD954(PLAY/REC)D306()1621GND104751(2)63201519(18)26(25)2324RSN311W64BIC601POWER AMP+B3D601-B1D602-B2Q601,6029+B71398E DETHP SW26SASYNCAC IN88POWERPOWER11+B81CHECK28RDS DATARDS CLK2714NQ503,D55851-VP-VP86MUTED906PRO-TECTORD974SWITCH-INGD907REGIN122811(12)1617X901(6MHz)XC INXC OUT1314X902(32.7kHz)X INX OUT80MUTINGQ606AC INPOWER CONTROLCIRCUITPOWER CONTROL/PROTECTION CIRCUITC1BB00000527IC151RDS SIGNAL DEMODULATORCLOCKRECOVERY(1187.5kHz)RDDARDCLIDRRDS-IDDETECT/RAM57kHzBPF(SCF)PLL(57kHz)VREFCINFLOUTVREFVDDA/DVssA/DMPXINTESTXOUTXINOSC/DIVIDERCLK(4.332MHz)89724,103,11+B2156141516X151(4.332MHz)REFERENCEVOLTAGETESTANTIALIASINGFILTERSMOOTHINGFILTERDATADECODERMODE1213RST91MUTE2MUTINGCONT.+B5Q612MUTINGQ609(Q610)SURROUND(8)CENTER(8)HF(6)LF(8)Q551,554,555SIGNALLEVEL DET.-B3+B4MFAN MOTORMOTORDRIVEQ553,556,55715Vss89Vss2SA-EH790(E,EB,EG,EP) BLOCK DIAGRAMFL1,2POWER TRANSFORMERF1AC INL701T701D702,704,752,754,755Q707+B4-B3Q702,705Z701RL702Q791POWERTRANSFORMERT702D741744-B1-B2Q703,704+B7D701,703,751,753,761Q701+B1Q723+B2Q711,725D717720+B5D705-VPFL1FL2FL DISPLAY(FL901)Q708,709+B3AC INSHSYNCPOWERQ726+B6+B8+B9D902D901SASYNCD746REGULATOR/STABILIZERREGULATORREGULATORREGULATORSWITCH-INGREGULATORREGULATORRELAYDRIVE+B6D740REGULATOR/STABILIZERSA-EH790(E,EB,EG,EP) BLOCK DIAGRAMFP791FP792D711NOTES :SIGNAL LINE:AUDIO SIGNAL: TUNER SIGNAL() indicates pin No. Right channel.12345678910111213ABCDEFGHSA-EH790(E,EB,EG,EP) OPERATION, MAIN P.C.B.Note: This printed circuit board diagram may be modified at any time with the development of new technology. OPERATION P.C.B.AVR901(VOLUME)C902C928C922C920R929R988R991R975R974R934R937R930R931R918R957R919R932R956R987C915D906JJJJJJJJJJJJJJJJJJJJJR995R942R941R912W902B151311975311412108642S913D951W901B151311975311412108642D902D901JR926R993R958R969R959R997R996R990R936R935R999R954C921C903D973R939R960R986JJJJJJC926C905D933D934D905JL901L902JJC901FL901125678910111213141516171819202122232425262728293031323334353637383940414243444546474849505354L153JJJR15515101520253035404550556031516575708081859095100IC901R953R951R943R961R924R925R922R921JJJR952R976R928R950R945R962R949C912C908C907C925C909C904C911C910D907JJJJJ321X901JJX902C914C916C918BCEQ901R151R152R153R154L152R158C152C153C154L151JC919C151C927Z901(SENSOR)D151C160C155C156X151IC1511589101615C157C159R944R946C924C917D974C158S901( / )D306( )R901JS904( PLAY/ REC)R904R157R903R902S902(CLOCK/TIMER)C923JK903(PHONES)2143567W905C395C396JR906R905S907(SET)S909(6CH DISCRETEINPUT)S906(TUNING MODE)S905(FM AUTO/MONO)S903(DEMO)JJJJJR910R909R908S908(INPUTSELECTOR)S910(TUNING )D904R911R994R940R907S912(TUNER/BAND)JS911(TUNING )R914R915R916R913JS915(RDSDISP MODEPTY)S914(RDSDISP MODEPS)JDIGITALS.WOOFERD954( PLAY/ REC)321123ECBQ902D961R966R965(REP3337H-M)NC931MAIN P.C.B.B10987654321D607R635R719JJW902AJJJJJJJ151311975311412108642C664C725JJJJJJJJJJJJJJJJJR230C740C733C735R764R763D737BCEQ723W901AW5012018161412108642191715131197531151311975311412108642R694R696R695JJJJJJD657D659C705D611BCEQ612JJJJJJJJJJJJC737C706JR776R738R739R708E C B Q708E C B Q709ECBQ707D721C707C708C509C510C714C731C741D720D719D718D705D717C715C602C656C655C554C601C555C622C660C659C371C551E C BQ609E C BQ610E C BQ554E C BQ607E C BQ608E C BQ606E C BQ605E C BQ555BCEQ602BCEQ551BCEQ503BCEQ601JJJ1234567891011CP101E602R605R606R617R618R684R683R604R603R686R685R601R614R602JJJJJJJJJJJJJJJJR693R692R564R229R628R688R687R512R511R509R204R203R727R211R510R563R558R607R608R560R569R598R597R570R561R591R559R557D555D552D757D658D551D756C550C647C605C606C610JJJJJJE C BQ704E C BQ703C721R572R544R610R619R612R691R624R620R546R547R638JJC604C608C603C607C649C609C650C612R627C613R555C614C723C552C648C619C611C724R621R615R631R632R552R551R609R611R637R769R721R722R648R647R767R622R556R623R797R796R729R202R205JJC616C617C618JD558JJD725IC6012625242322212019181716151413121110987654321JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJW721AW722A109876543214321JJJC709C761D755D754D761D753D702D704D752D701D751D703D601D602C704C701C703C702JJJJJJJJJJJJJJJJE601L602L601L605L606C639C637C635C636C632JK601JK6021 2 3 4CP6025 6 7 8JJJC626C620C630C621C631C642R651R642R652R650R649R639R641R640C627C629C628C732C641C640To SOUND PROCESSORLF(8 )HF(6 )LF(8 )HF(6 )CN781NRchLchSPEAKERSD582D581D583D553D554E C BQ553E C BQ557C559C556R568R566R5671 2JK551E C BQ556C201C2021589101516IC201D2011 2 3 4 5 68 910 1112CP6017(REP3337H-M)NN12345678910111213ABCDEFGHSA-EH790(E,EB,EG,EP) AC IN, POWER TRANSFORMER(A)&(B), POWER SUPPLY P.C.B.POWER SUPPLY P.C.B.CBCEQ701BCEQ702BCEQ711BCEQ725E C BQ705R725R723C719C717C710C720W701BD723C718C722C734R720R724R768R749R765D758D739D738JD730J10987654321(REP3337H-M)JK701L701FC1FC2F1 T2AZ701C791RL70212431234CN601567891011121234CN6025678T702(Power transformer)R794R773R774R795R771R772R712E C BQ791E C BQ726D500D711D746D740JJC754C758D745C759R777D742D743D741D744JJJJJJJC755C753C634W1W2/W3D747AC IN P.C.B.DAC INC644C646C651C652C624C633C625C645C643R646R645R644R643L603L604CJK603SRSL230V 50Hz . . . E,EG,EP230-240V 50Hz . . . EBREP3338A-S . . . E,EG,EPREP3338B-S . . . EBCENTER/SURROUNDSPEAKERSPOWER TRANSFORMER (A) P.C.B. EW722BW721B123456789101234R793CN710CN709CN708CN707CN706CN705CN704CN703CN702CN701FP792R798FP791JPOWER TRANSFORMER (B) P.C.B. FCN711CN713CN712W1W2W3JJJJJJT701(Power transformer)(REP3337H-M)REP3338A-S . . . E,EG,EPREP3338B-S . . . EB121110987654321ABCDEFGHSA-EH790(E,EB,EG,EP) OPERATION CIRCUIT DIAGRAMS904(PLAY/REC)FL901 (A2BB00000115)1754632RSS908(INPUT SELECTOR)S907(SET)S906(TUNING MODE)S905(FM AUTO/MONO)JK903PHONES3.5mm STEREOR997150R996150D973MA4030MTAC9211000PC92235V33C92050V4.7R92210KR92110KR9442.2KR9124.7KR9113.3KR9102.2KR9091.8KR9161.5KR9151.2KR9141KR913820R9084.7KR9073.3KR9062.2KR9051.8KR9041.5KR9031.2KR9021KR901820FL DISPLAY16810 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 5053 542579W905S901(/ )C92850V4.7AOPERATION CIRCUITC91950V4.7C92750V4.7C3960.047C9230.1C3950.047D974MA165TAC907470PC9240.1C9040.01R9241KC908470PR9251KS914(PS)S915(PTY)S910(TUNING,)S911(TUNING,)S912(TUNER/ BAND)S913(DIGITALS.WOOFER)S909(6CH DISCRETEINPUT)(RDS DISP MODE)A B C DEF G HIJKL M N O P Q R S T UXWVABCDEFGHIJKLMNOPQRSTUVWXYZS902(CLOCK/ TIMER)S903(-DEMO)IC901C2BBFD000404SYSTEM CONTROL/FL DRIVECBAQ901UN4212TARESETR936100R91915KR99147KR91810KR92847KL9021HD9011SS291TAL90110HR951330KR95210MABCDEFGHIJKLMNOPQRSTUVWXYZR993100KD934MA165TAD933MA165TAR990100KC9166.3V100D951LNJ301MPUJAD(DIGITAL S.WOOFER)R995220D954SELS5923C(PLAY/REC)R9861.5KD306SELS5223C()R9391.5KC9051000PC9016.3V100R935100R934100R9881KR93710KR9871KR9262.2KC9120.1R954100KC9261000PR9601.5KR9581KR999100KR95947R9692.7KD9021SS291TAC9030.01C90210V1000X902(32.7kHz)C91118PC91020PX901(6MHz)132D9051SS291TAEFIKLPNOQR9401KR9291KR9301KR9321KR9311KR976100KR9561KR9571KC9150.01C9251000PR953100ABCDGHJC91450V2.2D904MA165TAABCDEA B C D E F G HIJKL M N O P Q R S TU V W X111212122231323414245152561626717278182891929102030313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99100-VPP13P14P15P16P17P18P19P20P21P22P23P24P25P26P27P28P29P30P31P32VDD4P33P34P35P36P37P38REGIN0REGIN18GREMOCONRDS DATARDS CLKHP SWMIC DETVR JOGAVR JOGBNC(GND)SH REQKEY KARAOKEKEY TUVDD1XC OUTXC INVssX OUTX INRESETAC INSEL/ TUNERSEL TUNERST/ AV.6CHLC72 CKLC72 DI/ STLC72 CELC72 DOCHECKSTAND-BYTIMERS.W.LEDLOUNGECHORUSMUTENCPOWERVss2VDD2MUTE2NCMUTE3SHCSSHDOSHDISHCKE DETCR TIMERSDVDD3P12P11P10P9P8P7P6P5P4P3P2P11G2G3G4G5G6G7GR994100KMR9494.7KR950100:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE5.1V5.1V2V/2ms.DIV.5V0V5V0VT10ms.2V/2ms.DIV.0V5V-30.1V-30.1V-29.3V-29.3V-29.3V-26.3V-20.5V-29.3V-29.3V-29.3V-23.5V-20.5V-23.4V-23.4V-23.7V-20.7V-29.6V-29.6V-29.6V-23.7V-26.6V-26.5V5.1V-29.5V-29.5V-26.5V-17.2V-5.3V-10.3V0.4V0V-23.4V-20.5V-26.3V-26.3V5.1V-23.4V-20.5V-26.2V-29.2V-26.2V-26.2V-26.1V-26.3V-23.5V-23.5V-25.6V-27.5V-27.5V-25.5V-23.5V-25.6V5.1V2.6V2.6V0.6V5.1V0V0V1.4V5.1V5.1V5.1V2.3V2.3V2.7V1.6V5V2.2V0V5.1V5.1V4.6V0V0V2.5V0V5V0V5.1V3.3V1.9V1.9V1.4V0V5.1V5.1V4.8V0V0V0V0V0V0VFM / AM-30V4VT5.5ms.0V0V4VT5.5ms.-30VFM / AM3.3VP-PF=6MHzFM / AM4.2VP-PF=6MHzFM / AM5.2VP-PF=32.7kHzFM / AM5.2VP-PF=32.7kHzFM / AM2VP-PF=32.7kHzFM / AM131415161718192021222324DETRchCELchDIDOCL+B(2)SD+B(1)T.GND1234567891011Z120RAN0005EM-2(TUNER PACK)SA-EH790(E,EB,EG,EP) OPERATION, MAIN CIRCUIT DIAGRAMW902AW901ACP101CFGBAEDQ7072SB1417PQTAREGULATORQ7232SC3940AQSTAREGULATORR7634.7KR2291KD721MA4300MTAR7084.7KC7070.047C70635V10C73750V100ToSOUNDPROCESSOR(SH-EH790)C7350.047BAR5632.7KR5642.7KC66016V10C65916V10R6154.7KR6144.7KR6313.9KR6323.9KC2020.1R203100KR204100KC2010.1C60216V10C7080.047R211270D201MA4056MTAR6871.5KR6881.5KQ605,6062SD2144STAMUTINGQ605Q606R6831KR6174.7K2134567891011CBAX0X1VDDGVssINHZ0Z1Y1Y016151413121110912345678IC201BU4053BCFE2SIGNAL SELECTORC65516V10C65616V10R6064.7KR6054.7K2153456789101112131412153456789101112131412021345678910111213141516171819KLMIJEFCDEFGEFGABCDABGHC60116V10R5982.2KR5972.2KR205100KHGR202100KBCDEFC5090.01C5100.01R6931KR6921KC66416V10C72516V47ACR69647KQ609,6102SD2144STAMUTINGQ609Q610Q612UN411FTAMUTING CONT.BCR69422KR51147R50947R51247 R51047W501D719RL1N4003N02D720RL1N4003N02D717RL1N4003N02D718RL1N4003N02HDCR695470D611MA4051MTAC74016V10C7330.047D737MA4082LTAR764330MAIN CIRCUITBC7311000PC7410.1TUNER Lch/CTUNER RchA.GNDLch INRch IN+B(10V)SUR LSUR RS.WMIC-B(-10V)V.GNDD.GNDCS/ REQCLKDATACT GNDSH FL1SH FL2SYNCR6033.3KABBR6841KAC71525V4700C7141000PD705RL1N4003N02AW901BW902BIC151C1BB00000527RDS SIGNALDEMODULATOR123R1581KR154100KR153100K123456789101112131415BACOM123456789101112131415Q902UN411FTAMUTING CONT.A B C12345678910111213141516VREFHPX INVDDAVssAFL OUTC INTESTX OUTIDRRDCLRDDARSTMODEVDDDVssDX INR96222KVR901EVQVBXFK124B(VOLUME)R945100R96122KR943100C9170.01C1551000PC1531000PC1601000PC1596.3V47R1521KR1511KC154560PC1586.3V47C15116V10D907MA165TAPBCR9461KC9091000PC9186.3V100DEAR9411KL1531HR155120D151MA4051MTAL151100HL152100HC15647PC15747PABCDEFGHIJKLNOQSRAOPERATION CIRCUITR9422.2KR9741KC93116V10R9653.9KR9663.9KD961MA4075MTAR97522KD906MA165TAMN123Z901B3RAD0000028(REMOTE SENSOR)R1571KC152330PX151(4.332MHz)R2301K14.7V10.4V-37.3V-30.1V-30.7V14.7V7.2V7.8V-10V-10V0V0V-10.2V5.1V4.9V0V-10V0V0.7V5.7V0V0V0V0V0V6V7.2V7.6V-10.4V0V0V-10.4V: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE-30.1V5.1V: AUDIO SIGNAL LINE6V3.3V0V3.3V2.6V2.6V0V5.1V2.5V2.7V2.5V2.5V5.1V2.5V2.5V: TUNER SIGNAL LINE252627282930313233343536SA-EH790(E,EB,EG,EP) MAIN,POWER SUPPLY CIRCUIT DIAGRAMMQ708UN4211TASWITCHING(POWER)Q601Q602D756MA700ATAC603470PC604470PC607470PC608470PC6491000PC6501000PC6051000PC6061000PC6481000PC6170.01R63715KR63868KR619120KR622120KR621150KR624150KR620120KR61256KR61156KR610150KR609150KR60856KR60756KC61056PC60956PC61215PC61115PC61447PC61347PR627470KC61650V0.47ND601SB360L6508D602SB360L6508D754RL1N4003N02C7610.1D7011N5402BM21C7090.1IC601RSN311W64BPOWER AMPD757MA700ATA1234567891011121314151819202122232425261617R6043.3KR6013.3KR6023.3KR6184.7KQ601,6022SC5398RSTAPROTECTORD6071SS291TALKD658MA165TAD657MA165TABAR6851KR6861KQ607, 6082SD2144STAMUTINGQ607Q608C7050.01GR77610KQ7092SD2144STASWITCHING(POWER)R7383.9KR73947KC62210V100D659MA165TAD7511N5402BM21D7031N5402BM21D753RL1N4003N02D761RL1N4003N02D755RL1N4003N02D7521N5402BM21D7021N5402BM21D7041N5402BM21GFEDA BCD558MA165TAR54410KR57215KR648120C6180.01R6352.2KC6190.1Q5032SC5398RSTASWITCHINGC70435V4700C70235V4700C70335V4700C70135V4700R62822KR691150R647390R623120KCN781FCABDEQ5512SA1995RSTASIGNAL LEVEL DET.Q5552SD2144STASIGNAL LEVEL DET.Q7022SB1548PQAUREGULATORQ7252SC5398RSTASTABILIZERQ7052SA1995RSTASTABILIZERQ7012SD2374PQAUREGULATORR556100KR55710KC72110V100D725MA4082LTAR729220C7230.047C6391000PC6401000PC6411000PC6421000PC7320.022C6471000PD738MA165TAD730MA4091HTAR768100R7243.9KC71825V100D723MA4150HTAR7235.6KC7190.047R72510C7240.047C7100.047R54618KR55118KR55247KR55522KC5500.01D552MA165TAD555MA4100MTAR54718KE602E601R7491KD739MA165TAPOWER SUPPLY CIRCUITC11032456789W701B11032456789R7203.9KC73450V3.3D758MA165TAC72225V100C7200.047C71716V33MAIN CIRCUITBGR765220NR56910KD554MA165TAC3716.3V100Q5562SC5398RSTASWITCHINGR568100D553MA700ATAC55616V10C55550V1Q5572SA1995RSTAMOTOR DRIVEQ5532SD2144STAMOTOR DRIVER5702.2MR560100KC5590.01D581RL1N4003N02R56722FAN MOTORJK551R56668KQ5542SA1995RSTASIGNAL LEVEL DET.MR7193.3KQ703,7042SD2137PQTAREGULATORR7962.2Q703Q704R76927R7273.9KC55416V220R561100KC5520.01R5594.7KR5914.7KC55150V2.2D551MA165TA12D583RL1N4003N02NR7214.7R7222.2ABQ7112SB1548PQAUREGULATORR7972.2R76727R5582.2KD582RL1N4003N02: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINE7.6V-10.4V0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V0V0V5.1V5.1V0V0V0.7V0V0V2.1V14.7V0.7V0V0.7V0V29.2V29.2V14.7V15.2V-30.1V-11V-10.4V-11V-0.6V14.1V13.6V9.6V10.2V10.4V-10.4V14.7V7.6V7V0V7.6V0.3V-10.4V-10.4V-10.4V7.6V7.6V6.8VFAN ON:1.6V0VFAN ON:0V0.5VFAN ON:0V4.7V0V0.5V8.1V8.1V30.1V30.1V7.6V7.6V0V10.4V13.6VABCDEFGH373839404142434445464748SA-EH790(E,EB,EG,EP) MAIN, AC IN, POWER TRANSFORMER(A)&(B) CIRCUIT DIAGRAML60121345678910111221345678R63910C6210.1EFDCP601CP602R64110ABIJCC6310.1GLchJK601HF(6)LF(8)RchJK602HF(6)LF(8)ABCR65110C6270.1C6290.1C6350.047R64910L605R64210C6200.1C6300.1R64010L602C6370.047C6360.047R65210C6260.1C6280.1R65010L606C6320.047SPEAKERSGNDGNDC OUTC OUTGNDGNDGNDGNDSUR L OUTSUR L OUTSUR R OUTSUR R OUTECOSH SYNCSA SYNCD.GNDBU5VRS13V+BNCW722AW721A213456789102134EFHDCGFEDS1S2S3S4AC1CTAC2S7FL2FL1S1S2S3S4MAIN CIRCUITBCADBT701CN701CN702CN703CN704CN705CN706CN707CN708CN709CN710R7931CN601C6521000PC6441000PC6431000PC6510.047C6460.047C6450.047R chL chAC INJK701L701F1T2AT702Z701C7911000P3124RL702R79447KQ7912SD2144STARELAY DRIVED745MA4051MTAC7530.01C75516V1000Q7262SC3940AQSTAREGULATORD746RL1N4003N02D747MA4068LTAC7580.01C75910V47C7540.01D500MA165TAW2/W3W1CN602FP791K5G402AA0002JK603CENTER(8)SURROUND(8)R64610C6240.1C6340.1R64410L604R64510C6250.1C6330.1R64310L603DAC IN CIRCUIT21345678910111221345678R7771KR77418D711RL1N4003N02R77318R7122.2KABCACBR7953.9KD743RL1N4003N02D741RL1N4003N02D742RL1N4003N02D744RL1N4003N02R7712.2KD740MA165TAPOWER TRANSFORMER(B) CIRCUITFPOWER TRANSFORMER(A) CIRCU