Technics-SAEH790-rec-sch 维修电路原理图.pdf
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1、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 D
2、OSH 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 C
3、ELC72 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)+B818G3037P
4、1383845,47505271,7378FL901FL 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-VP
5、86MUTED906PRO-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)VREFCINFLOUTVR
6、EFVDDA/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
7、,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
8、+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,
9、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)C902C928C922C920R929R988R991R975R974R934R937R930R931R918R957R919R932R956R987C915D906JJJJJJJJJJJJJJJJJJJJJR995R942R941R912W902B151311
10、975311412108642S913D951W901B151311975311412108642D902D901JR926R993R958R969R959R997R996R990R936R935R999R954C921C903D973R939R960R986JJJJJJC926C905D933D934D905JL901L902JJC901FL901125678910111213141516171819202122232425262728293031323334353637383940414243444546474849505354L153JJJR15515101520253035404550
11、556031516575708081859095100IC901R953R951R943R961R924R925R922R921JJJR952R976R928R950R945R962R949C912C908C907C925C909C904C911C910D907JJJJJ321X901JJX902C914C916C918BCEQ901R151R152R153R154L152R158C152C153C154L151JC919C151C927Z901(SENSOR)D151C160C155C156X151IC1511589101615C157C159R944R946C924C917D974C158
12、S901( / )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 )R914R915R
13、916R913JS915(RDSDISP MODEPTY)S914(RDSDISP MODEPS)JDIGITALS.WOOFERD954( PLAY/ REC)321123ECBQ902D961R966R965(REP3337H-M)NC931MAIN P.C.B.B10987654321D607R635R719JJW902AJJJJJJJ151311975311412108642C664C725JJJJJJJJJJJJJJJJJR230C740C733C735R764R763D737BCEQ723W901AW50120181614121086421917151311975311513119
14、75311412108642R694R696R695JJJJJJD657D659C705D611BCEQ612JJJJJJJJJJJJC737C706JR776R738R739R708E C B Q708E C B Q709ECBQ707D721C707C708C509C510C714C731C741D720D719D718D705D717C715C602C656C655C554C601C555C622C660C659C371C551E C BQ609E C BQ610E C BQ554E C BQ607E C BQ608E C BQ606E C BQ605E C BQ555BCEQ602BC
15、EQ551BCEQ503BCEQ601JJJ1234567891011CP101E602R605R606R617R618R684R683R604R603R686R685R601R614R602JJJJJJJJJJJJJJJJR693R692R564R229R628R688R687R512R511R509R204R203R727R211R510R563R558R607R608R560R569R598R597R570R561R591R559R557D555D552D757D658D551D756C550C647C605C606C610JJJJJJE C BQ704E C BQ703C721R572
16、R544R610R619R612R691R624R620R546R547R638JJC604C608C603C607C649C609C650C612R627C613R555C614C723C552C648C619C611C724R621R615R631R632R552R551R609R611R637R769R721R722R648R647R767R622R556R623R797R796R729R202R205JJC616C617C618JD558JJD725IC6012625242322212019181716151413121110987654321JJJJJJJJJJJJJJJJJJJJJ
17、JJJJJJJJJW721AW722A109876543214321JJJC709C761D755D754D761D753D702D704D752D701D751D703D601D602C704C701C703C702JJJJJJJJJJJJJJJJE601L602L601L605L606C639C637C635C636C632JK601JK6021 2 3 4CP6025 6 7 8JJJC626C620C630C621C631C642R651R642R652R650R649R639R641R640C627C629C628C732C641C640To SOUND PROCESSORLF(8
18、)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.C
19、BCEQ701BCEQ702BCEQ711BCEQ725E C BQ705R725R723C719C717C710C720W701BD723C718C722C734R720R724R768R749R765D758D739D738JD730J10987654321(REP3337H-M)JK701L701FC1FC2F1 T2AZ701C791RL70212431234CN601567891011121234CN6025678T702(Power transformer)R794R773R774R795R771R772R712E C BQ791E C BQ726D500D711D746D740J
20、JC754C758D745C759R777D742D743D741D744JJJJJJJC755C753C634W1W2/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. EW722
21、BW721B123456789101234R793CN710CN709CN708CN707CN706CN705CN704CN703CN702CN701FP792R798FP791JPOWER 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(P
22、LAY/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.
23、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 CIRCUITC91950V4.7C92750V4.7C3960.047C9230.1C3950.047D974MA165TAC907470PC9240.1C9040.01R9241KC908470P
24、R9251KS914(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 DRIVECBAQ901UN4212TARESETR936100R91915KR99147KR
25、91810KR92847KL9021HD9011SS291TAL90110HR951330KR95210MABCDEFGHIJKLMNOPQRSTUVWXYZR993100KD934MA165TAD933MA165TAR990100KC9166.3V100D951LNJ301MPUJAD(DIGITAL S.WOOFER)R995220D954SELS5923C(PLAY/REC)R9861.5KD306SELS5223C()R9391.5KC9051000PC9016.3V100R935100R934100R9881KR93710KR9871KR9262.2KC9120.1R954100KC
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