Yamaha-AD824-adc-sm(1) 维修电路原理图.pdf

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1、SERVICE MANUALPA 011523HAMAMATSU, JAPAN1.45K-9731 K Printed in Japan 00.07CONTENTSSPECIFICATIONS 3PANEL LAYOUT 5CIRCUIT BOARD LAYOUT 6DIMENTIONS 8BLOCK DIAGRAM 9DISASSEMBLY PROCEDURE 10LSI PIN DESCRIPTION 14IC BLOCK DIAGRAM 16CIRCUIT BOARDS 19INSPECTION 36TEST PROGRAM 39FLASH ROM UPGRADE 43ERROR MES

2、SAGES 45PARTS LISTOVERALL CIRCUIT DIAGRAMAD CONVERTER200006*-150000This document is printed on chlorine free (ECF) paper with soy ink.RadioFans.CN 收音机爱 好者资料库AD8242WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electroni

3、c and/or plastic (whereapplicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possiblyother entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR M

4、OUTH FOR ANY REASONWHAT SO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyesto solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handl

5、ingfood.IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed thatbasic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood bythe users, and have there

6、fore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components and failure of the product to perform as specified. For thesereasons, we advise all Yamaha product owners that all

7、service required should be performed by an authorizedYamaha Retailer or the appointed service representative.IMPORTANT:This presentation or sale of this manual to any individual or firm does not constitute authorization, certification,recognition of any applicable technical capabilities, or establis

8、h a principal-agent relationship of any form.The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, andservice departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable andc

9、hanges in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist,please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated b

10、y grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to theunit.WARNINGComponents having special characteristics are marked and must be replaced w

11、ith parts having specification equal to thoseoriginally installed.LITHIUM BATTERY HANDLINGThis product uses a lithium battery for memory back-up.WARNING:Lithium batteries are dangerous because they can be exploded by improper handling. Observe the followingprecautions when handling or replacing lith

12、ium batteries.Leave lithium battery replacement to qualified service personnel.Always replace with batteries of the same type.When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.Never solder directly to the cells. Perform the soldering as

13、 quickly as possible.Never reverse the battery polarities when installing.Do not short the batteries.Do not attempt to recharge these batteries.Do not disassemble the batteries.Never heat batteries or throw them into fire.ADVARSEL!Lithiumbatteri-Eksplosionsfare ved fejlagtig hndtering. Udskiftning m

14、 kun ske med batteri af samme fabrikat og type. Levr detbrugte batteri tilbage til leverandren.VARNINGExplosionsfara vid felaktigt batteribyte.Anvnd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.Kassera anvnt batteri enligt fabrikantens instruktion.VAROITUSParisto

15、 voi rjht, jos se on virheellisesti asennettu.Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.Hvit kytetty paristo valmistajan ohjeiden mukaisesti.The following information complies with Dutch Official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OFBATTERIES. Please ref

16、er to the diassembly procedure for the removal of Back-up Battery. Leest u voor het verwijderen van de backup batterij deze beschrijving.RadioFans.CN 收音机爱 好者资料库SPECIFICATIONSAD8243IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordIMPORTANT.The wires in this main lead are coloured in

17、accordance with the following code:BLUE:NEUTRALBROWN: LIVEAs the colours of the wires in the main lead of this apparatus may notcorrespond with the coloured markings identifying the terminals inyour plug, proceed as follows:The BLUE wire must be connected to the terminal that is marked withthe lette

18、r N (or coloured BLACK).The BROWN wire must be connected to the terminal that is markedwith the letter L (or coloured RED).Be certain that neither core is connected to the earth terminal of thethree pin plug.MY8-AE, MY8-TDSampling rateMY8-ATAD conversion resolutionFrequency responseDynamic range *1G

19、ain errorTHD *2Hum & noise level *1Equivalent input noise *1CrosstalkSignal delayPhantom powerPEAKNOMINALChannel indicatorsSIGNAL+48 VSELWordclockOther indicators+48 V MASTERPOWERGain displayPower requirementsPower consumptionDimensions (W x H x D)WeightFree-air operating temperatureStorage temperat

20、ureRelative humidityPower cord lengthSupplied accessoriesOptions39.6950.88 kHz41.01350.88 kHz24-bit linear, 128-times oversampling-1.5, +1 dB, 20 Hz20 kHz, GAIN +10 dB-3, +1 dB, 20 Hz20 kHz, GAIN -62 dB110 dB (typical), GAIN +10 dB1 dB 1 kHz, GAIN -62 dB to +10 dB0.1 %, 4 dB output 20 Hz20 kHz, GAIN

21、 -62 dB0.05 %, full scale output 1 kHz, GAIN -62 dB0.05 %, 4 dB output 20 Hz20 kHz, GAIN +10 dB0.01 %, full scale output 1 kHz, GAIN +10 dB-92 dB (typical), Rs = 150 , GAIN +10 dB-62 dB, Rs = 150 , GAIN -62 dB-128 dB, Rs = 150 , GAIN -62 dB-70 dB between adjacent channels 1 kHz0.85 ms (analog input

22、to digital output, fs = 48 kHz)+48 V3 dB below full scale14 dB below full scale34 dB below full scalePhantom power on/offChannel select44.1kHz, 48kHz, BNC, SLOTPhantom power master on/offPower on/off3-digit, 7-segment LEDU.S.A. & Canada 120 V AC, 60 HzEurope 230 V AC, 50 Hz50 W480 x 97.5 x 377.6 mm

23、(18.9 x 3.84 x 14.86 inches)8.5 kg (18.7 lbs)10 C to 35 C (50 F to 95 F)-20 C to 60 C (-4 F to 140 F)10 %95 %1.9 mOwners Manual, 9-pin D-sub crossed cable (1.5m)MY8-AT, MY8-TD, MY8-AE mini YGDAI I/O cards*1. Measured with a 6 dB/octave filter at 12.7 kHz;equivalent to a 20 kHz filter with infinite d

24、B/octave attenuation.*2. Measured with a 6 dB/octave filter 80 kHz.*Where dB represents a specific voltage, 0 dBis referenced to 0.775 V rms.AD8244*1. 24-bit linear, 128-times oversampling A/D converters.*2. XLR-type connectors are electronically balanced (pin 1 = ground, pin 2 = hot, pin 3 = cold).

25、*3. TRS phone jacks are electronically balanced (tip = hot, ring = cold, sleeve = ground).*Where dB represents a specific voltage, 0 dB is referenced to 0.775 V rms.Analog InputConnectionGAINActual LoadImpedanceFor UsewithNominalConnectorInput LevelNominalMax.before clipINPUT 18 *1INSERT IN 183k lin

26、es10k W50600 mics &600 lines600 lines-62 dB+10 dB-62 dB(615 V)+10 dB(2.45 V)+10 dB(2.45 V)-48 dB(3.08 mV)+24 dB(12.28 V)+24 dB(12.28 V)XLR-3-31 type(balanced)*2TRS phone jack(balanced)*3*1. TRS phone jacks are electronically balanced (tip = hot, ring = cold, sleeve = ground).*Where dB represents a s

27、pecific voltage, 0 dB is referenced to 0.775 V rms.Analog OutputConnectionActual SourceImpedanceFor UsewithNominalConnectorOutput LevelNominalMax.before clipINSERT OUT 18150 10k lines+10 dB(2.45 V)+24 dB(12.28 V)TRS phone jack(balanced)*1Digital I/OConnectionCOM PC/RS422COM RS422WORD CLOCK INWORD CL

28、OCK OUTSLOTFormatmini YGDAILevel/ImpedanceRS232C/RS422RS422TTL, 75 (ON/OFF)TTL, 75 Connector9-pin D-sub (male)9-pin D-subBNCBNCONOFFPOWERAD CONVERTER12345678PEAKSIGNALNOMINALPEAKSIGNAL+48VSELNOMINAL+48VWORD CLOCKINTERNAL44.1kHzBNCSLOT48kHzSELdBGAINOFF ON+48V MASTERINPUT(BAL)OUT(BAL)IN(BAL)INSERTCOMN

29、VERTERAD824823145678321456784321567SLOTOUTPC RS42275INON OFFWORD CLOCKRS42216789101112 13151617181920222123241423451PEAK, NOMINAL & SIGNAL indicators2GAIN display3GAIN control4POWER indicator5POWER switch6WORD CLOCK indicators7WORD CLOCK Source button8Channel SEL indicators9Channel SEL buttons10Chan

30、nel +48V indicators11+48V on/off button12+48V MASTER indicator13+48V MASTER switch14Power cable1516COM RS422 portCOM PC/RS422 switch17COM PC/RS422 port18WORD CLOCK OUT connector19WORD CLOCK 75 ON/OFF switch20WORD CLOCK IN connector21INPUT (BAL) connectors22SLOT23INSERT OUT (BAL) connectors24INSERT I

31、N (BAL) connectorsPANEL LAYOUTAD8245Front PanelRear PanelAD8246CIRCUIT BOARD LAYOUTMAINMYSLHAJKADACRear panel assemblyFront panel assemblyPower transformerPNSWCN909CN903CN906CN902CN904CN905CN901CN908CN907CN101CN201CN002CN001CN961CN960CN962CN963CN052CN053CN051CN054AD8247JKADCN103AD-CN104AD-CN204CN203

32、CN202CN102CN005CN004CN002CN001CN003 CN004 CN001 CN003MYSLACDCPNSW CN002CN008CN010CN011CN007CN006CN005CN009AD8248DIMENTIONS67.567.534535354104301388H: 97.5303048(33)27410.84517355D: 377.6W: 480Unit: mmCH1INPUTJK101INSERT OUTJK102CN002CN101CN102IC101CN003FSSDATAOUT1 8 , FS-AD , 64FS-AD , 256FS-AD , RE

33、SET-AD64FS256FSRESETCN002CN962LEVELPADPADHA1HA1HA2A ,HA2B ,HA2C +48VQ102RY101IC101IC102PADHA2A / DPERKNOMINALSIGNALHA1BAINSERT INJK103IC103771IC104IC104AINL+AINLIC105AK5342BUFFIC008A / DIC305AK5342AINR+AINRCH2CH3CH4D-FFCH5CH6CH7CH8ADD-07ADD-07RST-HA , A1-HA , A2-HA , A3-HA , CS-HACPUSH7042AIC911IC91

34、6IC919PE4TX, RXLOCK449.8304MHzLOCK48MUTECOMA-TX, TX-COMB256k SRAMIC923256k SRAMIC9248M ROMIC927BUFFIC932CN901CN054CN051bCN051aCN901OUT3/4, OUT7/8OUT1/2, OUT5/6CN904CN905CN961SWASWA,SWBECA,ECB+48CN960CN902CN053CN902CN053CN054BUFFIC933MUTEPC/RS422RS422IC901COM B/SLOTSELECTIC903INT/EXTSELECTIC913SELECT

35、IC910D-FFIC907INT 48kHzX902INT 44.1kHzX901WORDCLOCKSELECTIC921PLL &TIMINGGEN.IC922CN903CN909PCONOFFRS422EXT-DIRINXICN907CN908 RESETSLOTSLOT D-FF D-FFRESEXTAL44.1kHz48kHzBNCSLOTWORD CLOCKINTERNAL+48V x 8SEL x 8SEL18+48VMASTERRotary EncoderGAINdBOUTIN JK902JK901MAINMYSLHAHAADADA / DIC505AK5342ADA / DI

36、C705AK5342ADPNADPNJKADCOMWORD CLOCKKEC-92536IC00100641518679852524EC960IC928,9298474879547,4890881515123113,93636565,6193,59,152,43,47711SW901BLOCK DIAGRAMAD8249HATop coverIF plate460530300450 X16290A500 X14310500: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800)Fig. 1330: Bonding Tapping Screw-B

37、 3.0X8 MFZN2BL (VN413300) 390: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) 530: Bind Head Screw A4.0X12 MFZN2BL (VP156900) Fig. 2AMAIN390X63303303.JK Circuit Board and AD Circuit Board3-1Remove the top cover. (See procedure 1.)3-2Remove the HA circuit board. (See procedure 2.)3-3Remove the two

38、(2) screws marked 430. The AD shieldsheet can then be removed. (Fig. 4)3-4Remove the six (6) screws marked 390 and the two (2)screws marked 400. The JK circuit board can then beremoved. (Fig. 2 and Fig. 3)4.AD Circuit Board4-1Remove the top cover. (See procedure 1.)4-2Remove the HA circuit board. (S

39、ee procedure 2.)4-3Remove the JK circuit board. (See procedure 3.)4-4Remove the six (6) screws marked 330, the two (2)screws marked 350 and the two (2) screws marked370. The AD circuit board can then be removed. (Fig. 2and Fig. 3)AD82410DISASSEMBLY PROCEDURE1.Top Cover1-1Remove the fourteen (14) scr

40、ews marked 500. The topcover can then be removed. (Fig. 1)2.Circuit Boards and UnitsRemove the top cover, each circuit board and unit canthen be removed.Circuit Board and UnitMAINHADC AssemblyPower TransformerA290300310450460210190ScrewBonding Screw 4.0X8 MFZN2BL (VS154500)Bonding Screw 3.0X6 MFZN2B

41、L (VS863000)Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330)Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)412516424Ref. No.ScrewQTY22212155Fig.AD82

42、411400350370370JKAD350: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)370: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)400: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)430: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)Fig. 3Fig. 4400430430AD shield sheet5.MYSL Circuit Board*Note tha

43、t remove card before following operation.5-1Remove the top cover. (See procedure 1.)5-2Remove the MAIN circuit board. (See procedure 2.)5-3Remove the two (2) screws marked 530. The IF platecan then be removed. (Fig. 2)5-4Remove the four (4) screws marked 260. The OPTassembly can then be removed. (Fi

44、g. 5)5-5Remove the two (2) screws marked 240. The MYSLcircuit board can then be removed. (Fig. 5)6.AC Circuit Board6-1Remove the top cover. (See procedure 1.)6-2Remove the MAIN circuit board. (See procedure 2.)6-3Remove the three (3) screws marked 50A and the two(2) screws marked 110A. The AC circui

45、t board can thenbe removed. (Fig. 6)*The fuse is not a part of the AC circuit Board. When youreplace the AC circuit board, you should remove the fusefrom the board, and put it back into the holder on the newboard.7.DC Circuit Board7-1Remove the top cover. (See procedure 1.)7-2Remove the DC assembly.

46、 (See procedure 2.)7-3Remove the four (4) screws marked 60. The transistorholder can then be removed. (Fig. 7)7-4Remove the three (3) screws marked 40. The DC circuitboard can then be removed. (Fig. 7)*The four fuses are not part of the DC circuit Board. Whenyou replace the DC circuit board, you sho

47、uld remove thefuses from the board, and put it back into the holder on thenew board.60140140140DC40: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) 60: Pan Head Screw SP4.0X8 MFZN2Y (EL200020)Fig. 7140: Oval Head Screw B4.0X10 MFZN2BL (V6221000)Fig. 8 DC Assembly404040Transistor holderRack mount a

48、ngleRack mount angle140FusesFusesAD824128.PN Circuit Board and SW Circuit Board8-1Remove the top cover. (See procedure 1.)8-2Remove the six (6) screws marked 140. The right andleft rack mount angles can then be removed. (Fig. 8)8-3Remove the knob marked 110B. (Fig. 9)8-4Remove the six (6) screws mar

49、ked 80. The front panelcan then be removed. (Fig. 9)AC250: Bind Head Screw 4.0X8 MFZN2BL (EG340360)260: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)Fig. 5DC assemblyOPT assemblyMYSLPower transformer190260260210250250210110A X2FuseAC50A: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800) 110A: B

50、onding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)Fig. 6 Rear Panel Assembly50A X3Fig. 10Battery VN103500VN103600(Battery holder for VN103500)Notice for back-up battery removalPush the battery as shown in figure,then the battery will pop up.Druk de batterij naar beneden zoalsaangeven in de tekening, de