Technics-SADV280-cs-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.GNDCE/REQCLKSH FL220SYNC+B5RchRch-B3To SOUND PROCESSOR(SH-DV280)BLOCK DIAGRAMLC72 CELC72 DI/STLC72 CKDATA1CLK1

2、DATA INCE1345LC72 DO2C2BBFD000317IC901SYSTEM CONTROL / FL DRIVERch94SH CS97SH CK9596SH DOSH DISHSYNC100SD21SH REQ1920212223AMMIX12LEVELDETFM IFS-CURVE23REG413AGCCOMP681110AMRFAMPAMIFAM/FMIFBUFFER241FMDETAMOSCBUFEERALCTUNINGDRIVE18BUFFERAMPFM ANTRF AMPFMMIXERFM OSC9Vcc+B(FM)FM IFAMP+B2AMIFT1207.2MHzX

3、INXOUTPHASE DETCHARGE PUMPCE23DI4CLD0598710BO4BO3IO115VDD16PDIFIN11BO21/21413FM INAM INPowersupply(FM:ON)+B2+B1+B(FM)SDSTEREOSWITCH17FM / AM I F AMP,DET / AM OSC,MIX / FM MPX(LA1833MN)15PILOTCANCELPHASEDET16VCOFFFFPILOTDETFFAMDETDECODERBO16IO21219VssPowerONRESETPLL FREQUENCYSYNTHESIZER(LC72131M)+B2G

4、ND57STMONOFM/AMSDFMDETFM IFINAMOSCOUTAFCAMOSCAM RFINAGCAMOUTDETOUTPILOTINMPXINPILOTOUTLch14Rch1718AINAOUTAMANTCOILAMOSCCOILAM ANT+B2STRQAM IFINAMMIXOUTRchIFT+B(FM)+B(FM)+B(FM)FM:ONDETCE1DATA1CLK1DATA INSW CONT.12X0X114ABC11109G8213BU4053BCFE2IC201SIGNAL SELECTOR115Y1Y0VDD16+B4VSS7-B36ST/AV.6CHSDZ101

5、 TUNER UNIT (RAN0005EM-2)REFERENCEDIVIDERSWALLOW COUNTER1/6,1/17 4BIT12 BITPROGRAMMABLEDIVIDERDATA SHIFTREGISTER LATCHUNIVERSALCOUNTERMUTINGQ605MUTINGQ607(Q608)93MUTE3MUTINGCONT.+B4Q90210SEL/TUNERMIC DET25+B8SA-DV280(EB,EG) BLOCK DIAGRAMSPEAKERSR chPHONESVR901(VOLUME)2423VR JOGAVR JOGBKEYSWITCH(S901

6、908,910915)1920KEY TUKEYKARAOKEQ901,D904RESET12RESET+B890VDD2+B9VDD1VDD3VDD4184672C2BBFD000317IC901SYSTEM CONTROL / FL DRIVE29REMO-CONZ901(REMOTESENSOR)+B818G3037P1383845,47505271,7378FL901FL DISPLAYD931,93379REGIN082TIMER83S.W LEDD951(DIGITALS.WOOFER)81STAND-BYD954(PLAY/REC)D306()1621GND104751(2)63

7、201519(18)26(25)2324RSN311W64BIC601POWER AMP+B3D601-B1D602-B2Q601,6029+B713POWER98E DETHP SW26SASYNCAC IN88POWERPOWER11+B81CHECKDET28RDS DATARDS CLK2714NQ503,D55851-VP-VP86MUTED906PRO-TECTORD974SWITCH-INGD907REGIN122811(12)1617X901(6MHz)XC INXC OUT1314X902(32.7kHz)X INX OUT80MUTINGQ606AC INPOWER CON

8、TROLCIRCUITPOWER CONTROL/PROTECTION CIRCUITC1BB00000527IC151RDS SIGNAL DEMODULATORCLOCKRECOVERY(1187.5kHz)DATACLKIDRRDS-IDDETECT/RAM57kHzBPF(SCF)PLL(57kHz)VREFCINFLOUTVREFVDDA/DVssA/DMPXINTESTXOUTXINOSC/DIVIDERCLK(4.332MHz)89724,103,11+B2156141516X151(4.33MHz)REFERENCEVOLTAGETESTANTIALIASINGFILTERSM

9、OOTHINGFILTERDATADECODERMODE1213RST91MUTE2MUTINGCONT.+B5Q612MUTINGQ609(Q610)SURROUND(8)CENTER(8)HF(6)LF(8)Q551,554,555SIGNALLEVEL DET.-B3+B4MFAN MOTORMOTORDRIVEQ553,556,55715Vss89Vss2SA-DV280(EB,EG) BLOCK DIAGRAMPOWER TRANSFORMERF1AC INL701T701D702,704,752,754,755Q707+B4-B3Q702,705Z701RL702Q791POWER

10、TRANSFORMERT702D741744-B1-B2Q703,704+B7D701,703,751,753,761Q701+B1Q723+B2Q711,712,725D717720+B5D705-VPFL1FL2FL DISPLAY(FL901)Q708,709+B3AC INSHSYNCPOWERQ726+B6+B8+B9D902D901SASYNCD746REGULATOR/STABILIZERREGULATORREGULATORREGULATORSWITCH-INGREGULATORREGULATORRELAYDRIVE+B6D740REGULATOR/STABILIZERSA-DV

11、280(EB,EG) BLOCK DIAGRAMNOTES :SIGNAL LINE: FM SIGNAL: AM SIGNAL: FM OSC SIGNAL: AM OSC SIGNAL:AUDIO SIGNAL() indicates pin No. Right channel.12345678910111213ABCDEFGHSA-DV280(EB,EG) OPERATION, MAIN P.C.B.Note: This printed circuit board diagram may be modified at any time with the development of ne

12、w technology. MAIN P.C.B.B10987654321D607R635R719JJW902AJJJJJJJ151311975311412108642C664C725JJJJJJJJJJJJJJJJJR230C740C733C735R764R763D737BCEQ723W901AW5012018161412108642191715131197531151311975311412108642R694R761R696R695JJJJJJD657D659C705D611BCEQ612JJJJJJJJJJJJC737C706JR776R738R739R708E C B Q708E C

13、 B Q709ECBQ707D721C707C708C509C510C202C714C731C741D720D719D718D705D717C715C602C656C655C554C601C555C622C660C659C371C551E C BQ609E C BQ610E C BQ554E C BQ607E C BQ608E C BQ606E C BQ605E C BQ555BCEQ602BCEQ551BCEQ503BCEQ601JJJJ1234567891011CP101E602R605R606R617R618R684R683R604R603R686R685R601R614R602JJJJ

14、JJJJJJJJJJJJR693R692R564R229R628R688R687R512R511R509R204R203R727R211R510R563R558R607R608R560R569R598R597R570R561R591R559R557D555D552D757D658D551D756C550C647C605C606C610JJJJJJE C BQ704E C BQ703C721R572R544R610R619R612R691R624R620R546R547R638JJC604C608C603C607C649C609C650C612R627C613R555C614C723C552C6

15、48C619C611C724R621R615R631R632R552R551R609R611R637R769R721R722R648R647R767R622R556R623R797R796R729R202R205JJC616C617C618JD558JJD725IC6012625242322212019181716151413121110987654321JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJW721AW722A109876543214321JJJC709C761D755D754D761D753D702D704D752D701D751D703D601D602C704C70

16、1C703C702JJJJJJJJJJJJJJJJE601L602L601L605L606C639C637C635C636C632JK601JK6021 2 3 4CP6025 6 7 8JJJC626C620C630C621C631C642R651R642R652R650R649R639R641R640C627C629C628C732C641C640To SOUND PROCESSORLF(8 )HF(6 )LF(8 )HF(6 )CN781NRchLchSPEAKERSD582D581D583D553D554E C BQ553E C BQ557C559R568R566R5671 2JK55

17、1E C BQ556C2011589101516IC201D2011 2 3 4 5 68 910 1112CP6017(REP3337E-M)N NC556N NOPERATION P.C.B.AVR901(VOLUME)C902C928C922C920R929R988R991R975R974R934R937R930R931R918R957R919R932R956R987C915D906JJJJJJJJJJJJJJJJJJJJJR995R942R941R912W902B151311975311412108642S913D951W901B151311975311412108642D902D90

18、1JR926R993R958R969R959R997R996R990R936R935R999R954C921C903D973R939R960R986JJJJJJC926C905D933D931D905JL901L902JJC901FL901125678910111213141516171819202122232425262728293031323334353637383940414243444546474849505354L153JJJR15515101520253035404550556031516575708081859095100IC901R953R951R943R961R924R925

19、R922R921JJJR952R976R928R950R945R962R949C912C908C907C925C909C904C911C910D907JJJJJ321X901JJX902C914C916C918BCEQ901R151R152R153R154L152R158C152C153C154L151JC919C151C927Z901(SENSOR)D151C160C155C156X151IC1511589101615C157C159R944R946C924C917D974C158S901( / )D306( )R901JS904( PLAY/ REC)R904R157R903R902S90

20、2(CLOCK/TIMER)C923JK903(PHONES)2143567W905C395C396JR906R905S907(SET)S906(TUNING MODE)S905(FM AUTO/MONO)S903(DEMO)JJJJJR910R909S908(INPUTSELECTOR)S910(TUNING )D904R911R994R940R907S912(TUNER/BAND)JS911(TUNING )R914R915R916R913JS915(RDSDISP MODEPTY)S914(RDSDISP MODEPS)JDIGITALS.WOOFERD954( PLAY/ REC)32

21、1123ECBQ902D961R966R965(REP3337E-M)NC93112345678910111213ABCDEFGHSA-DV280(EB,EG) AC IN, POWER TRANSFOMER(A)/(B), POWER SUPPLY P.C.B.Note: This printed circuit board diagram may be modified at any time with the development of new technology. POWER SUPPLY P.C.B.CBCEQ701BCEQ702BCEQ711BCEQ712BCEQ725E C

22、BQ705R725R723C719C717C710C720W701BD723C718C722C734R720R724R768R749R765R753R754D758D739D738JD73010987654321(REP3337E-M)POWER TRANSFORMER (A) P.C.B. EW722BW721B123456789101234R793CN710CN709CN708CN707CN706CN705CN704CN703CN702CN701FP792R798FP791JPOWER TRANSFORMER (B) P.C.B. FCN711CN713CN712W1W2W3JJJJJJT

23、701(Power transformer)(REP3337E-M)REP3338A-S . . . EGREP3338B-S . . . EBJK701JK603L701FC1FC2F1 T2AZ701C791RL70212431234CN601567891011121234CN6025678T702(Power transformer)R794R773R774R795R771R772R712E C BQ791E C BQ726D500D711D746D740JJC754C758D745C759R777D742D743D741D744JJJJJJJC755C753C634W1W2/W3D74

24、7AC IN P.C.B.DAC INC644C646C651C652C624C633C625C645C643R646R645R644R643L603L604CSRSL230V 50Hz . . . EG230-240V 50Hz . . . EBREP3338A-S . . . EGREP3338B-S . . . EBCENTER/SURROUNDSPEAKERSABCDEFGH123456789101112SA-DV280(EB,EG) OPERATION CIRCUIT DIAGRAMSCHEMATIC DIAGRAM-1S904(PLAY/REC)FL901 (A2BB0000008

25、4)1754632TSS908(INPUT SELECTOR)S907(SET)S906(TUNING MODE)S905(FM AUTO/MONO)JK903PHONES3.5mm STEREOR997150R996150D973MA4030MTAC9211000PC92235V33C92025V22R92210KR92110KR9442.2KR9124.7KR9113.3KR9102.2KR9091.8KR9161.5KR9151.2KR9141KR913820R9073.3KR9062.2KR9051.8KR9041.5KR9031.2KR9021KR901820FL DISPLAY16

26、810 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(/ )C92825V22NOTE:The number which noted at the connectors on the schematic diagram as SCHEMATIC DIAGRAM-1 or SCHEMATIC DIAGRAM-2indicates the schematic diagram

27、 serial number located on the left corner in the schematic diagram.AOPERATION CIRCUITC91925V22C92725V22C3960.047C9230.1C3950.047D974MA165TAC907470PC9240.1C9040.01R9241KC908470PR9251KS914(PS)S915(PTY)S910(TUNING,)S911(TUNING,)S912(TUNER/ BAND)S913(DIGITALS.WOOFER)(RDS DISP MODE)A B C DEF G HIJKL M N

28、O P Q R S T UXWVABCDEFGHIJKLMNOPQRSTUVWXYZS902(CLOCK/ TIMER)S903(-DEMO)IC901C2BBFD000317SYSTEM CONTROL/FL DRIVECBAQ901UN4212TARESETR936100R91915KR99147KR91810KR92847KL9021HD9011SS291TAL90110HR951330KR95210MABCDEFGHIJKLMNOPQRSTUVWXYZR993100KD931MA165TAD933MA165TAR990100KC9166.3V100D951LNJ301MPUJAD(DI

29、GITAL S.WOOFER)R995220D954SELS5923C(PLAY/REC)R9861.5KD306SELS5223C()R9391.5KC9051000PC9016.3V100R935100R934100R9881KR93710KR9871KR9262.2KC9120.1R954100KC9261000PR9601.5KR9581KR999100KR95947R9692.7KD9021SS291TAC9030.01C90210V1000X902(32.7kHz)C91118PC91020PX901(6MHz)132D9051SS291TAEFIKLMNOQR9401KR9291

30、KR9301KR9321KR9311KR976100KR9561KR9571KC9150.01C9251000PR953100ABCDGHJC91450V2.2D904MA165TAABCDEA B C D E F G HIJKL M N O P Q R S TU V W X111212122231323414245152561626717278182891929102030313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 82 83 84

31、 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 CKLC

32、72 DI/ STLC72 CELC72 DOCHECKSTAND-BYTIMERS.W.LEDLOUNGECHORUSMUTENCPOWERVss2VDD2MUTE2NCMUTE3SHCSSHDOSHDISHCKE DETCR TIMERSDVDD3P12P11P10P9P8P7P6P5P4P3P2P11G2G3G4G5G6G7GR994100KUR9494.7KR950100:AUDIO SIGNAL LINE: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE5.1V5.1V2V/2ms.DIV.5V0V5V0VT10ms.2V/2ms.DIV.0

33、V5V-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-2

34、5.6V5.1V2.6V2.6V0.6V5.1V0V0V1.4V5.1V5.1V5.1V2.3V2.3V2.7V1.6V5V2.2V0V5.1V5.1V4.6V0V0V2.5V0V5V0V5.1V3.3V1.9V1.9V1.4V0V5.1V5.1V4.8V0V0V0V0V0V0VFM / 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 / AM131415161

35、718192021222324SA-DV280(EB,EG) OPERATION, MAIN CIRCUIT DIAGRAMSCHEMATIC DIAGRAM-2W901BW902BIC151C1BB00000527RDS SIGNALDEMODULATOR123X151R1581KR154100KR153100K123456789101112131415BACOM123456789101112131415Q902UN411FTAMUTING CONT.A B C12345678910111213141516VREFHPX INVDDAVssAFL OUTC INTESTX OUTIDRRDC

36、LRDDARSTMODEVDDBVssBX INR96222KVR901EVQVBXFK124B(VOLUME)R945100R96122KR943100C9170.01C1551000PC1531000PC1601000PC1596.3V47R1521KR1511KC154560PC1586.3V47C15116V10D907MA165TAMBCR9461KC9091000PC9186.3V100DEAR9411KL1531HR155120D151MA4051MTAL151100HL152100HC15647PC15747PABCDEFGHIJKLNOQSTAOPERATION CIRCUI

37、TR9422.2KR9741KC93116V10R9653.9KR9663.9KD961MA4075MTAR97522KD906MA165TAUN123Z901B3RAD0000028(REMOTE SENSOR)R1571KC152330PW902AW901ACP101CFGBAEDDETRch INCELch INDIDOCL+B(2)SD+B(1)T.GNDQ7072SB1417PQTAREGULATORQ7232SC3940AQSTAREGULATORR7634.7KR2301KR2291KD721MA4300MTAR7084.7KC7070.047C70635V10C73750V10

38、0ToSOUNDPROCESSOR(SH-DV280)To TUNER UINTon SCHEMATICDIAGRAM-5/11,12-AC7350.047BAR5632.7KR5642.7KC66016V10C65916V10R6154.7KR6144.7KR6313.9KR6323.9KC2020.1R203100KR204100KC2010.1C60216V10C7080.047R211270D201MA4056MTAR6871.5KR6881.5KQ605,6062SD2144STAMUTINGQ605Q606R6831KR6174.7K2134567891011CBAX0X1VDDG

39、VssINHZ0Z1Y1Y016151413121110912345678IC201BU4053BCFE2SIGNAL SELECTORC65516V10C65616V10R6064.7KR6054.7K2153456789101112131412153456789101112131412021345678910111213141516171819KLMIJEFCDEFGEFGABCDABGHC60116V10R5982.2KR5972.2KR205100KHGR202100KBCDEFC5090.01C5100.01R6931KR6921KC66416V10C72516V47ACR69647

40、KQ609,6102SD2144STAMUTINGQ609Q610Q612UN411FTAMUTING CONT.BCR69422KR51147R50947R51247 R51047W501D719RL1N4003N02D720RL1N4003N02D717RL1N4003N02D718RL1N4003N02HDCR695470D611MA4051MTAC74016V10C7330.047D737MA4082LTAR764330MAIN CIRCUITBC7311000PC7410.1TUNER Lch/CTUNER RchA.GNDLch INRch IN+B(10V)SUR LSUR RS

41、.WMIC-B(-10V)V.GNDD.GNDCS/ REQCLKDATACT GNDSH FL1SH FL2SYNCR6033.3KABBR6841KAC71525V6800C7141000PD705RL1N4003N02A: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE-30.1V5.1V:AUDIO SIGNAL LINE6V7.6V3.3V0V3.3V2.6V2.6V0V5.1V2.5V2.7V2.5V2.5V5.1V2.5V2.5V14.7V10.4V-37.3V-30.1V-30.7V14.7V7.2V7.8V-10V-10V0V0V-1

42、0.2V5.1V4.9V0V-10V0V0.7V5.7V0V0V0V0V0V6V7.2V7.6V-10.4V0V0V-10.4V: FM SIGNAL LINE: AM SIGNAL LINE252627282930313233343536SA-DV280(EB,EG) MAIN,POWER SUPPLY CIRCUIT DIAGRAMSCHEMATIC DIAGRAM-3MQ708UN4211TASWITCHING(POWER)Q601Q602D756MA700ATAC603470PC604470PC607470PC608470PC6491000PC6501000PC6051000PC606

43、1000PC6481000PC6170.01R63715KR63868KR619120KR622120KR621150KR624150KR620120KR61256KR61156KR610150KR60956KR60856KR60756KC61056PC60956PC61215PC61139PC61447PC61347PR627470KC61650V0.47ND601SB360L6508D602SB360L6508D754RL1N4003N02C7610.1D7011N5402BM21C7090.1IC601RSN311W64BPOWER AMPD757MA700ATA123456789101

44、1121314151819202122232425261617R6043.3KR6013.3KR6023.3KR6184.7KQ601,6022SC5398RSTAPROTECTORD6071SS291TALKD658MA165TAD657MA165TABAR6851KR6861KQ607, 6082SD2144STAMUTINGQ607Q608C7050.01GR77610KQ7092SD2144STASWITCHING(POWER)R7383.9KR73947KC62210V100D659MA165TAD7511N5402BM21D7031N5402BM21D753RL1N4003N02D

45、761RL1N4003N02D755RL1N4003N02D7521N5402BM21D7021N5402BM21D7041N5402BM21GFEDA BCD558MA165TAR54410KR57215KR648120C6180.01R6352.2KC6190.1Q5032SC5398RSTASWITCHINGC70435V4700C70235V4700C70335V4700C70135V4700R761220R62822KR69168R647270R623120KCN781FCABDEQ5512SA1995RSTASIGNAL LEVEL DET.Q5552SD2144STASIGNAL

46、 LEVEL DET.Q7022SB1548PQAUREGULATORQ7252SC5398RSTASTABILIZERQ7052SA1995RSTASTABILIZERQ7012SD2374PQAUREGULATORR556100KR55710KC72110V100D725MA4082LTAR729220C7230.047C6391000PC6401000PC6411000PC6421000PC7320.022C6471000PD738MA165TAD730MA4091HTAR768100R7243.9KC71825V100D723MA4150HTAR7235.6KC7190.047R725

47、10C7240.047C7100.047R54618KR55118KR55247KR55522KC5500.01D552MA165TAD555MA4100MTAR54718KE602E601R7491KD739MA165TAPOWER SUPPLY CIRCUITC11032456789W701B11032456789R7203.9KC73450V3.3D758MA165TAC72225V100C7200.047C71716V33MAIN CIRCUITBGR765220NR56910KD554MA165TAC3716.3V100Q5562SC5398RSTASWITCHINGR568100D

48、553MA700ATAC55616V10C55516V10Q5572SA1995RSTAMOTOR DRIVEQ5532SD2144STAMOTOR DRIVER5702.2MR560100KC5590.01D581RL1N4003N02R56722FAN MOTORJK551R56668KQ5542SA1995RSTASIGNAL LEVEL DET.MR7193.3KQ703,7042SD2137PQTAREGULATORR7962.2Q703Q704R76927R7273.9KC55416V220R561100KC5520.01R5594.7KR5914.7KC55150V2.2D551

49、MA165TA12D583RL1N4003N02NR7214.7R7222.2ABR7530.47R7540.47Q711,7122SB1548PQAUREGULATORQ711R7972.2R76727R5582.2KD582RL1N4003N02Q712: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINE7.6V-10.4V0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V0V0V5.1V5.1V0V0V0.7V0V

50、0V2.1V14.7V0.7V0V0.7V0V29.2V29.2V14.7V15.2V-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:0V4.7V0V0.5V8.1V8.1V30.1V30.1V7.6V7.6V0V10.4V13.6V10.4V14.1V13.6VABCDEFGH373839404142434445464748SA-DV280(EB,EG) MAIN,