Hitachi-HTADD3-asr-sm 维修电路原理图.pdf

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1、CAUTION:Beforeservicing this chassis, itisimportantthat the servicetechnician read the“SafetyPrecautions”and“ProductSafetyNotices”inthisservicemanual.ATTENTION:Avantdeffectuerlentretienduchassis,letechniciendoitlirelesPrcautionsdescuritetlesNoticesdescuritduproduitprsentsdansleprsentmanuel.VORSICHT:

2、VorffnendesGehuseshatderService-IngenieurdieSicherheitshinweise“undHinweisezurProduktsicherheit“indiesemWartungshandbuchzulesen.SERVICE MANUALMANUEL DENTRETIENWARTUNGSHANDBUCHDatacontainedwithinthisServicemanualissubjecttoalterationforimprovement.Les donnes fournies dans le prsentmanueldentretienpeu

3、ventfairelobjetdemodificationsenvuedeperfectionnerleproduit.DieindiesemWartungshandbuchenthaltenenSpezifikationenknnensichzwecksVerbesserungenndern.September 2000AV SURROUND SYSTEMHTA-DD3EHTA-DD3EBSHTA-DD3WHTA-DD3WUNHTA-DD3WAUSM0103 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTCONTE

4、NTSSPECIFICATIONS.3SERVICE POINTS.4WIRING DIAGRAM.9PRINTED WIRING BOARD.10SCHEMATIC DIAGRAM.25EXPLODED VIEW.43REPLACEMENT PARTS LIST.47ADJUSTMENT.8BLOCK DIAGRAM.23RadioFans.CN 收音机爱 好者资料库ENGLISHSAFETY PRECAUTIONS WARNING: The following precautions must be observed.ALL PRODUCTS Before any service is p

5、erformed on the chassis an isolation transformer should be inserted between the power line and the product. 1. When replacing the chassis in the cabinet, ensure all the protective devices are put back in place. 2. When service is required, observe the original lead dressing. Extra precaution should

6、be taken to ensure correct lead dressing in any high voltage circuitry area. 3. Many electrical and mechanical parts in HITACHI products have special safety related characteristics. These characteristics are often not evident from visual inspection, nor can the protection afforded by them necessaril

7、y be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified by marking with a ? on the schematics and the replacement parts list.The use of a substitute replacement component that does not have

8、 the same safety characteristics as the HITACHI recommended replacement one, shown in the parts list, may create electrical shock, fire, X-radiation, or other hazards. 4. Always replace original spacers and maintain lead lengths. Furthermore, where a short circuit has occurred, replace those compone

9、nts that indicate evidence of overheating. 5. Insulation resistance should not be less than 2M ohms at 500V DC between the main poles and any accessible metal parts. 6. No flashover or breakdown should occur during the dielectric strength test, applying 3kV AC or 4.25kV DC for two seconds between th

10、e main poles and accessible metal parts. 7. Before returning a serviced product to the customer, the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock. The service technician must make sure that no protective devic

11、e built into the instrument by the manufacturer has become defective, or inadvertently damaged during servicing. CE MARK 1. HITACHI products may contain the CE mark on the rating plate indicating that the product contains parts that have been specifically approved to provide electromagnetic compatib

12、ility to designated levels. 2. When replacing any part in this product, please use only the correct part itemised in the parts list to ensure this standard is maintained, and take care to replace lead dressing to its original state, as this can have a bearing on the electromagnetic radiation/immunit

13、y. PICTURE TUBE 1. The line output stage can develop voltages in excess of 25kV; if the E.H.T. cap is required to be removed, discharge the anode to chassis via a high value resistor, prior to its removal from the picture tube. 2. High voltage should always be kept at the rated value of the chassis

14、and no higher. Operating at higher voltages may cause a failure of the picture tube or high voltage supply, and also, under certain circumstances could produce X-radiation levels moderately in excess of design levels. The high voltage must not, under any circumstances, exceed 29kV on the chassis (ex

15、cept for projection Televisions). 3. The primary source of X-radiation in the product is the picture tube. The picture tube utilised for the above mentioned function in this chassis is specially constructed to limit X-radiation. For continued X-radiation protection, replace tube with the same type a

16、s the original HITACHI approved type 4. Keep the picture tube away from the body while handling. Do not install, remove, or handle the picture tube in any manner unless shatterproof goggles are worn. People not so equipped should be kept away while picture tubes are handled LASERS If the product con

17、tains a laser avoid direct exposure to the beam when the cover is open or when interlocks are defeated or have failed. - 1 -RadioFans.CN 收音机爱 好者资料库HTA-DD3? Checking method? ?!?#? ?$%?INSTRUMENT(Exposed part)Insulation tester (DC 500V)?&? (?#?)?*?#?+?_? ,?HTA-DD3?-?SPECIFICATIONS?AUDIO SECTION(Powera

18、mplifier)For (E, EBS)For (W, WUN, WAU)Rated output:? ? !#?$%?%? !#?&?(? ? !#?SINUS power:?)?)? ?$%?%?)?&?(?)?)? ?Output terminals:?*?*?%$%?%?&?(?(Analog)LINE inputInput sensitivity / input impedance:?+?,-?Frequency response:?.?/0?(*S/Nratio:)0?(*?!?1?%?2?%(?Total harmonic distortion:?PHONO input-REC

19、 OUTInput sensitivity / input impedance:?.?+?,-?RIAA deviation:3?(*?S/Nratio:-,?(*?!?1?%?2?%(?.?+?4?Total harmonic distortion:?0?0+?Rated output / Maximum output:?.?+?-+VIDEO SECTION(Composite)Input/output level and impedance:?+414?-.?Frequency response:.?5?/0?(*(S-Video)Input/output level and imped

20、ance:67?+414?$7?+414Frequency response:.?5?/0?(*(Component)Input/output level and impedance:67?+414?$?7?-?+414?$?7?-?+414Frequency response:.?5?/0?(*TUNER SECTIONFM?%?8+?9?-.?(*?7? AMReceiving range:?-?.?5?5?.?5?%4?.?)?%4? ? *&?.?)?%4?.?-?%4?:;?:?Usablesensitivity:?8+?-?(*?08+?0?.?(*;?(*?!?1?%?2?%(?

21、&? = -.?(*?!?1?%?2?%(?Total harmonic distortion:5;?&? = ?,? GENERALPower supply:$?0?+?.? ? *&?$?-+?,?+?.?:;?:?Power consumption:?&?9?(?(%?7?.?Maximum external dimensions:,0,?,?0?Weight:?2 REMOTE CONTROL UNIT (RB-DD1S)Batteries:=?A?4%?9?%?%?External dimensions:.,?-?-?Weight:?2?BC(?2?9?%?%? Accessory

22、supplied:4%?9?2?B?=%?%?B?C?=*1?&?=?A?9?%?%?5?C?4?9?%?9?9?(?5?(?9?%?9D?4?4?%?4?E%?%?4%B?B9?9?(?(%?2?9?%?F%B?B?9?2%?B%?HTA-DD3?.?121Top coverx 2x 2x 4Rear Plate3x 284x 121x 5Fig.1Fig.2SERVICE POINTS1. Removal of Top Cover? /?1? /?.?2?2. Removal of Rear Plate? /?0?3?4? /?$?-?,?HTA-DD3?$?6Claws (PWB Sup

23、port)56Flat Cable78x 4x 1x 120 x 3x 4Z19EABCDFHIJKNLMOPQMain PWBDSP PWBPush RivetHolder (Back)Holder (Front)Audio PWBS Video PWBComposit PWBComponent PWBRelay PWBTunerPWBSHIELDPLATEDSP PWB19 x 1for E, E(BS)Fig.43. Removal of Tuner & DSP PWB board? /?/?)?1? ?2?)?,? ?Z?&?3,? /?+? 4?&?2?5(?3,?A?B?C?D?E

24、?2?F?3,?Removal of Audio PWB board? 4?6?3,?.?H?I?J?2?K?3,?Removal of S Video/Composit PWB board? 4?(?7?3,?L?2?M?3,?Removal of Components PWB board? 4?3,?N?3,?Removal of Relay PWB board? 4?/?3,? ? -? ? O? P? 2? Q? ?3,?4. Removal of Transformer? /?.?5? ?3,?Removal of Power PWB board? /?6?,? /?3,?-?3,?

25、 ?Removal of Main PWB board? 5?1?18?3,?,? /?.?7?9?#? /?-?,?#? /?8?#?Removal of Heat-Sink? 9?,?9?#?1?$ ?Fig.3HTA-DD3?:?1212Nut x 1Inner PanelNut x 21513x 1x 114x 2x 2x 11910 x 4x 211 x 1Bottom ChassisBass/Treble KnobMaster Vol.Front PanelFig.65. Removal of Front Panel? 9?,?.?!? ?/?7?2?,?;&?1?6. Remov

26、al of Inner Panel, Power Switch, Phone Jack & FL board.? /?1?$ ?#? /?$?-?18? /?%? /?&?9?1?!)?:?,7?=$?!)?6?7/8?:A?,?BC&+ ?6?7/9?D&?D?9?9?C?1?E?6?/?1?F?/?5?G0?)?&.%A-%?7?)?:%?,?$?)?,?5?1?E?(?B?8?7 6?7 1?+;+,(0=?$%?)?-#-?=?.?$%?)? %0?%?)?:?%#G?%=?$?3;3HB;36H0=?$%?)?-#-?=?.?$%?)? %0?%?)?:?%#G?%=?$6?+;+,

27、($?)?%?G#?G?)? :?)?:?%#G?%=?$?3;3HB;36H$?)?%?G#?G?)? :?)?:?%#G?%=?$A D J U S T M E N T S?G?HTA-DD3WIRING DIAGRAMFL DISPLAY UNITCN2BCN1BCN1ACN1BCN2AW17AW15AW16AW18AW14AW19AW13ACN204CN204ACN201ACN14CN12TUNER/VOL UNITAUDIO IN. UNITDIGITAL IN. UNITVIDEO(C)IN. UNITVIDEO(S)IN. UNITMAIN UNITCN22PG22PG13CN2

28、05THERMALUNITVIDEO(COMP.)IN. UNITSPEAKER OUT. UNITCN206PG14CN201DSP UNITPG205PG206W19BW18BW17BW16BW15BW14BW13BPOWER T.(2nd) UNITW5BW7BW9BW6BW8BW10BW4BPOWER T.(Pry.) UNITPOWER CONTROL UNITPG3CN13CN3PHONES/SPEAKER SW UNITPOWER SW UNIT*PG15PG12W3AW1AW1BW2BW6AW7AW10A W9AW8AW3BW2APOWER CORDPG25*VOLTAGE S

29、ELECTOR(for W, WUN, WAU)REMARKS * SHOULD BE FOLLOW PWB ASSY.*CN15HTA-DD3PRINTED WIRING BOARD- 10 -Soldering SideMAIN PWBHTA-DD3- 11 -Component SideMAIN PWBHTA-DD3Soldering SideTuner PWB- 12 -HTA-DD3Component SideTuner PWB- 13 -HTA-DD3Soldering SideComponent SideAudio PWB- 14 -HTA-DD3Relay PWBSolderi

30、ng SideComponent Side- 15 -HTA-DD3Digital PWBPower PWBComponent SideFL PWB- 16 -HTA-DD3Soldering SideFL PWBPower PWBDigital PWBHTA-DD3Component SideSoldering SideComponent PWBHTA-DD3Component SideSoldering SideDSP PWBHTA-DD3S-Video PWBComposit PWBPT2 PWBSoldering SideHTA-DD3S-Video PWBComposit PWBPT

31、2 PWBComponent SideHTA-DD3Soldering SideComponent SidePhone PWBPT1 PWBP-SW PWBPhone PWBPT1 PWBP-SW PWB?-?HTA-DD3BLOCK DIAGRAMFR2. : ANALOG SIGNAL, : DIGITAL SIGNAL, : VIDEO SIGNAL0dB0dB+6dB12dB0dB+6dB+6dB+6dB+6dB0dB0dB+6dB+4dB+4dB-6dB0dB0dB0dB+4.5dB+10.5dB+10dB+10dB+28dB+28dB+28dB+28dB+14dB+14dB0dB0

32、dB+14dB+21dB0dB0dBREMARKS1. THIS DRAWING IS THE HTA-DD3 CIRCUIT BLOCK (LEVEL) DIAGRAM.3. : u-COM CONTROL SIGNAL+28dBANALOGPHONORIAAFUNCTION SWIC102BA4558BFH. P. FBA15218TC9273F-007CDDVD/VDPTV/DBSVCRMD/TAPE200mV/47k200mV50mV200mVBA4558BFBA15218BA15218 ADC +INBFA/DIC202ERR MUTESR BA15218CODEC AK4527D/

33、ASLC BA15218FR BA15218SWFLADC -INTAPE RACKVCR RECLA1838TUNER BLOCKLC7272ONSPFRXSDASDB-SDDBU4066BCNJM2267ROMDVD/VDPBA15218BA15218IC95196KHz CONTNJM2068x3ELE. VOLCH. TRIMNJM2068x3DTS SEL (CD/DVD)F GAIN SWPO. AMPMIX. AMPMIX. AMPMIX. AMPBA15218SWSWSRSLSLSRSTEREO6CH EXT. IN SEL.STEREO (WHEN SW)CCFLBFLC75

34、36x3BFBFBFBFBFPO. AMPPO. AMPPO. AMPTONE CONT.1VTONE CONT.MAIN AMPIC50IC4024. 5V200mV/22kMAIN AMPMAIN AMPMAIN AMPMAIN AMPVOL. MUTESUBWOOFER MUTEHP RELAYSP. RELAY2VHONES RchHONES LchFRONT RchCENTERSUBWOOFERPRE OUTFRONT LchSURROUND RchSURROUND LchSURROUND RchSUBWOOFERSURROUND LchCENTERCENTERFRONT Rch-B

35、FRONT Rch-AFRONT Lch-BFRONT RchFRONT Lch6ch EXT. INFRONT Lch-ADVDTV/DBSCOMPONENT VIDEOBU4066BCVCR RECMONITOR OUTPUTCOMPONENT VIDEO FUNCTIONMONITOR OUTPUTBA15218PO.AMPPO.AMPPO.AMPFLFRNJM2267MIX. AMPL. P. FTV/DBSVCRIC611S. VIDEOS. VIDEO FUNCTIONIC201VIDEODVD/VDPVCR RECTV/DBSMONITOR OUTPUTVCRVIDEO FUNC

36、TIONOPT CDOPT DVDOPT TVTC74HCU04AF TC74HC151FDIGITAL INPUT SEL.DIGITAL INPUTIC92RDS(E, EBS)IC203DSP(ZR38650)?.?HTA-DD3HTA-DD3AA1135113231286OUTLET P.W.B.5AM LOOP ANTENNA 8TRemote ControlEDISON PLUG ADAPTERFM ANT4838404739FL DISP PWB13151246423741233621362022BB1011304519449161827271829BBAASHIELD PLAT

37、E(E/EBS)(W/WUN)VOLTAGE SELECTOR(W/WUN)243349432515034825RELAY P.W.B.2431726(E, EBS)43COMPONENT P.W.B.S-VIDEO P.W.B.COMPOSIT P.W.B.AUDIO P.W.B.DSP P.W.B.TUNER P.W.B.752P-SW1 P.W.B.14MAIN P.W.B.EXPLODED VIEW (Cabinet Chassis) Nos. are reference Nos. of part listI?.-?II?.?IHTA-DD3I?.$?II?.:?I?.=?HTA-DD

38、3REPLACEMENT PARTS LISTPRODUCT SAFETY NOTE:?$?4?%?9?%(?9?9E%?4%B?9C?B?9?9B?%?B?4?9?9%?*%?%?%4C9B?2?9?%?%B?4?%?4C%9?%?%9(?B9?%M6?!M5?.?8?G?.?+$?.?6 M $?$A?&M?8?.?+$?6 M $?$A?&M?8?.?+?K ? *&L$?-?6 M $?$A?&M?8?.?+$?000= M $?$A?&5O?8?0+$?)?)?=$ =?$A?*?A?+?G$0?)?,=$ =?$A?*?.?A?.?+?G?K ? *&L$0?)?=$ =?$A?*

39、?A?+?G$00?)?=$ =?$A?$?.A?.?+?#$0,?)?=$ =?$A?$?.A?.?+?#$0?)?=$ =?$A?*?A?+?G$0-?)?=$ =?$A?*?A?+?G$0?,=56M=?$A?,-8?G?.?+?5J?$0)?)?=$ =?$A?A?.?+?J$,?6 M $?$A?&M?,-8?.?+$,?,?6 M $?$A?&M?,-8?.+$,?06 M $?$A?&M?8?.?+$,0?0= M $?$A?&=?8?.?+$,?06 M $?$A?&M?8?.?+$,.?)?=$ =?$A?*?A?+?G$,?.6 M $?$A?&M?8?.?+$,-?.6

40、M $?$A?&M?8?.?+$,?06 M $?$A?&M?8?.?+$,)?)?=$ =?$A?*?A?+?G$.?.6 M $?$A?&M?8?.?+$.?6 M $?$A?&M?8?.?+DESCRIPTIONSYMBOLNO.PART NO.DESCRIPTIONPART NO.SYMBOLNO.CAPACITORS:?.0?HTA-DD3$?-?)0?00=$?!A?$A?0)$?00?A?#?.?+?K ? *&L$?)0?00=$?!A?$A?0)$?00?A?#?.?+?K ? *&L$?0?)0?0?=$?!A?$A?$?8?.+$?0?)0?0?=$?!A?$A?$?8?

41、.+$?00?)0?0?=$?!A?$A?$?8?.+$?0.?)0?,?=$?!A?$A?0)?A?J?.?+$?0?)0?,?=$?!A?$A?0)?A?J?.?+$?.?6 M $?$A?&M?8?.?+$?.?6 M $?$A?&M?8?.?+$?.0?)0?0?=$?!A?$A?0)$?A?#?.?+?K ? *&L$?.,?)0?0?=$?!A?$A?0)$?A?#?.?+?K ? *&L$?.-?6 M $?$A?&M?8?.?+$?.?6 M $?$A?&M?8?.?+$?.)?)?=$A?AM6?!M5?8?#?.?+$?)?=$A?AM6?!M5?8?#?.?+$?)?=$

42、A?AM6?!M5?8?#?.?+$?)?=$A?AM6?!M5?8?#?.?+$?0?6 M $?$A?&M?8?.?+$?,?6 M $?$A?&M?8?.?+$?-?6 M $?$A?&M?8?.?+$?-?6 M $?$A?&M?8?.?+$?-?6 M $?$A?&M?8?.?+$?-)?6 M $?$A?&M?8?.?+$?6 M $?$A?&M?8?.?+$?6 M $?$A?&M?8?.?+$?)0?=$?!A?$A?0)$?A?#?.?+$?0?)0?=$?!A?$A?0)$?A?#?.?+$?,?)0?=$?!A?$A?0)$?008?#?.?+$?.?)0?=$?!A?$

43、A?0)$?A?#?.?+$?06 M $?$A?&M?8?.?+$?)?06 M $?$A?&M?8?.?+$?)?-?-?=$A?56M=?8?#?.?+$?)?)0?-?=$?!A?$A?O=50)*?.?A?G?+$?)0?6 M $?$A?&M?8?.?+$?),?0656M=?$A?,-8?G?.?+?5J$?)0?0?=$?!A?$A?8?1?$?.?,?6 M $?$A?&M?,-8?.+$?)0?0?=$?!A?$A?8?1?.+$?)?)0?0?=$?!A?$A?8?1?.+$?)0?0?=$?!A?$A?8?1?.+$?0?)0?0?=$?!A?$A?8?1?.+$?,?

44、)0?0?=$?!A?$A?8?1?.+$?-?)0?0?=$?!A?$A?8?1?.+$?)0?0?=$?!A?$A?8?1?.+$?)?)0?0?=$?!A?$A?8?1?.+$?)0?0?=$?!A?$A?8?1?.+$?0?)0?0?=$?!A?$A?8?1?.+$?,?,?6 M $?$A?&M?,-8?.+$?.?)0?=$?!A?$A?,-8?G?+$?-0?=$?!A?$A?A&M1?.$?-?-0?=$?!A?$A?A&M1?.$?)0?0?=$?!A?$A?8?1?.+$?0?6 M $?$A?&M?8?.?+PRODUCT SAFETY NOTE:?$?4?%?9?%(?

45、9?9E%?4%B?9C?B?9?9B?%?B?4?9?9%?*%?%?%4C9B?2?9?%?%B?4?%?4C%9?%?%9(?B9?%M6?!M5?8?G?.?+?5J$,?0?=$A?AM6?!M5?8?G?.?+?5J$,?,?=$A?AM6?!M5?8?G?.?+?5J$,?.?.06 M $?$A?&M?8?.?+$,?.,; M $?$A?&5 ?8?0+$,?-?.,; M $?$A?&5 ?8?0+$,?.06 M $?$A?&M?8?.?+$,?)?.,; M $?$A?&5 ?8?0+$,0?.,; M $?$A?&5 ?8?0+$,0?)=56M=1$A?8?G?.?

46、+?5J?$,0?)0?0)=$?!A?$A?0)?A?J?.?+$,00?)=56M=1$A?8?G?.?+?5J?$,0,?)0?0)=$?!A?$A?0)?A?J?.?+$,0.?)0?0)=$?!A?$A?0)?A?J?.?+PRODUCT SAFETY NOTE:?$?4?%?9?%(?9?9E%?4%B?9C?B?9?9B?%?B?4?9?9%?*%?%?%4C9B?2?9?%?%B?4?%?4C%9?%?%9(?B9?%M6?!M5?8?G?.?+?5J$.?=$A?AM6?!M5?8?G?.?+?5J$.?-?.,; M $?$A?&5 ?8?0+$.?.06 M $?$A?&

47、M?8?.?+$.?)?.,; M $?$A?&5 ?8?0+$.?.06 M $?$A?&M?8?.?+$.?.,; M $?$A?&5 ?8?0+$.?.,; M $?$A?&5 ?8?0+$.?0?)=56M=1$A?8?G?.?+?5J?$.?,?)0?0)=$?!A?$A?0)?A?J?.?+$.?.?)=56M=1$A?8?G?.?+?5J?$.?)0?0)=$?!A?$A?0)?A?J?.?+$.?-?)0?0)=$?!A?$A?0)?A?J?.?+$.?)=56M=1$A?8?G?.?+?5J?$.?)?)0?0)=$?!A?$A?0)?A?J?.?+$.0?)=56M=1$A

48、?8?G?.?+?5J?$.0?)0?0)=$?!A?$A?0)?A?J?.?+$.0?)0?0)=$?!A?$A?0)?A?J?.?+$.00?6 M $?$A?&M?8?.?+$.0,?)0?0)=$?!A?$A?0)?A?J?.?+$.0.?)0?0)=$?!A?$A?0)?A?J?.?+$.0?)0?0)=$?!A?$A?0)?A?J?.?+$.0-?,?6 M $?$A?&M?,-8?.+$.0?)0?=$?!A?$A?A?#?.?+$.0)?)0?0)=$?!A?$A?0)?A?J?.?+$?)?0=$ =?$A?,-?A?+?J$?,?6 M $?$A?&M?,-8?.+$?,?

49、,?N!M?$A?8?J?.?+$?.?)?,05N!M?$A?6?A?5?+$?)0?0)=$?!A?$A?0)?A?J?.?+$?06 M $?$A?&M?8?.?+$?6 M $?$A?&M?,?-8?.?+$?0?6 M $?$A?&M?,?-8?.?+$?,?6 M $?$A?&M?,?-8?.?+$?)?6 M $?$A?&M?8?.?+$?)0?0.=$?!A?$A?0)$?,-?A?#?.?+$?)0?0.=$?!A?$A?0)$?,-?A?#?.?+?$%?HTA-DD3PRODUCT SAFETY NOTE:?$?4?%?9?%(?9?9E%?4%B?9C?B?9?9B?%

50、?B?4?9?9%?*%?%?%4C9B?2?9?%?%B?4?%?4C%9?%?%9(?B9?%M6?!M5?.?8?G?.?+$-?.,=$A?AM6?!M5?.?8?G?.?+$-?.= M $?1$A?&=?008?.?+$-?.= M $?1$A?&=?008?.?+$-0?)0?,?=$?!A?$A?0)?A?J?.?+$-,?)0?,?=$?!A?$A?0)?A?J?.?+$?,?.6 M $?$A?&M?8?.?+$?.M?,-? M $?$A?MA,?8?0+$?M?,-? M $?$A?MA,?8?0+$?-?06 M $?$A?&M?8?.?+$?)?06 M $?$A?