Audiolab-Mdac-dac-sm维修电路原理图.pdf

《Audiolab-Mdac-dac-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Audiolab-Mdac-dac-sm维修电路原理图.pdf（27页珍藏版）》请在收音机爱好者资料库上搜索。

1、M-DACRadioFans.CN 收音机爱 好者资料库CONTENTM-DACIntroductioniascreen ofBottomAssembly Parts ListElectronic Parts ListProduct Version Deviation/SpecificationAssembly SketchSchematic DiagramWir ng Di gramSilkTopMaintenance Alignment Procedure1.2.3.4.5.6.7.8.9.12-34-56-8910-1516-1718-1920-2324-2510.RadioFans.C

2、N 收音机爱 好者资料库SPECIFICATIONM-DACM-DAC-Specification and Features-P1/22.32Bit 84.000MHz 512 Element MultiBit Array DACAsynchronous USB supporting 24 Bits / 96kHz with Remote Control of PC / MACMediaPlayer via HID supportx2 192KHz 24Bits Coax SPDIF Digital Inputsx2 96KHz Optical Digital InputsHigh Curre

3、nt, High Linearity RCA Single Ended & XLR True Balanced with fully discreteJFET CROSS* Class A Output stagesHigh Current, High Linearity CROSS* JFET Class A Headphone AmplifierTriple cascaded Jitter attenuation stages, with triple cascaded Asynchronies Clockdomain isolation all but eliminating the F

4、irst order effects of Jitter from the external inputTest condition: AC253V, COAX: 997Hz Digital Signal,SR: 48kHzLoad: 10 kohms impedance, with Filter NAL settingZ-out: 20ohmsM-DAC Performance TestLRLR1Output Level997Hz,Digital COAX InputVrms2.212.224.234.22stereo 997Hz output 2V%0.0010.0010.0010.001

5、stereo 20kHz output 2V%0.00050.00050.00020.0002Line output,dB108108116116Line output, with 22-22kHz BW and A-wtddB1121121201204Gain0dBFS Input (0dBV)dB5Noise Levelno signal,pre-amp outdBV-100.8-101.4102.5102.76DC OffsetTo measure the output DC VoltagemV0.80.57CrosstalkL/R Cross talk,refer to 997HzdB

6、1081081161168L/R differentL/R different,un-balancedB9Phaseno reversedeg10Freq RespondRefer to 997Hz input as 0dBr,+/-0.5dBHz12Idle CurrentIdle Current,230VACmAConditionUnitsXLR13.20.017.120-20k018mA020-20k0.052THDRCAS/N3No.Test ItemsDigital OUT TestUnitsLimitLRLR1Output LeveldBFS00.0500002Harmonic D

7、istortion%5005Level LinearitydBFS-143-143-143-1436Frequency responsedB0.5dB0.010.010.010.017Output impedanceohm75132KHz44.1KHz44.10.0148KHz480.0196KHz960.01No.Test itemTrack44.1KHz48KHz96KHz48KHz8Sampling RatekHz96KHz44.1KHzCOAX32, 44.1,48,96KHz(16,24bit)580OPT/75sources on the Digital to Audio Conv

8、ersion processSelectable DAC Mode or Digital Pre-Amplifier Mode, allowing direct connection to PowerAmplifiers and Active speakers in Digital only systems2.7” High contrast OLED display“Bit Perfect” Digital Data source analyzerIntelligent real-time Bit Depth analysis engine Displays the “True” Bit d

9、epth of the Digitalinput sourceDigital Data Decorrelation Engine Decorrelates the fixed “LSBs” data pattern within theAudio data stream when less then 24Bits. Data decorrelation at the DAC substrate levelreduces both Digital and Analogue Second order effects within the DAC at the silicon DielevelMS

10、Windows LSB Data restoration for “Bit Perfect” reply corrects Windows LSB roundingerrors. Allows Bit Perfect “Plug and Play” with Windows Media PlayerASYNC USB Buffer level display to insure correct functionality and diagnostics of the USBHOST device in ASYNC Audio streaming mode“Actual” or “Nominal

11、” Sampling Frequency display displays the TRUE input samplingfrequency with 1Hz resolutionDigital level meters in dB with Peak holdCD / DVD SPDIF subcode embedded Track and Time DisplayAdvanced De-Jittered Optical and Coax SPDIF Output, with USB to SPDIF output.Selectable Optical or Coax Clock-Lock

12、interface allowing “Jitter Free” Clock-Lockedconnection with compatible CD transports etc.Full Remote Control + External Remote / BUS I/O loop26 Internal regulated supply rails10 Ultra Low Noise, Low Impedance Discrete Regulators7 User Selectable Digital Filters Fully Software upgradeable via the US

13、B PortMaster Clock Jitter less then 3pS Short Term - Measured directly at DAC “XOut”Organic Ultra Low ESR capacitors, High Tolerance Polypropylene film / Foil capacitors,Ultra Stable Very Low VCR 0.1% MELF SMD resistors, 4 Layer PCBExternal upgradeable Power supply interface for a future upgrade pat

14、hCROSS Current Regulated Output Stage Solution.*SPECIFICATIONM-DACM-DAC-Specification and Features-P2/23ASSEMBLY SKETCHM-DAC4M-DAC-Product Exploded Drawing- 1/1PASSEMBLY SKETCHM-DAC5321M-DAC-Packing Exploded Drawing- 1/1PSCHEMATIC DIAGRAMM-DACM-DAC-Mainboard-P1/16SCHEMATIC DIAGRAMM-DACM-DAC-Frontboa

15、rd-P2/27SCHEMATIC DIAGRAMM-DACM-DAC-PSU Board-P1/18WIRING DIAGRAMM-DACM-DAC-Wiring Diagram-P1/19SILKTOPSCREEN OFBOTTOM/M-DAC-Mainboard-Top-Silkscreeen-P1/1M-DAC10M-DACSILKTOPSCREEN OFBOTTOM/M-DAC-Mainboard-SMD-Silkscreeen-P1/111SILKTOPSCREEN OFBOTTOM/M-DAC-Front Board-Top-Silkscreeen-P1/1M-DAC12SILK

16、TOPSCREEN OFBOTTOM/M-DAC-Front Board-SMD-Silkscreeen-P1/1M-DAC13SILKTOPSCREEN OFBOTTOM/M-DAC-PSU Board-Top-Silkscreeen-P1/1M-DAC14SILKTOPSCREEN OFBOTTOM/M-DAC-Front Board-SMD-Silkscreeen-P1/1M-DAC15MAINTENANCE ALIGNMENT PROCEDUREM-DACM-DAC-Ageing Test Step-P1/216MDAC Soak Test procedure Rev 0.1Post

17、Soak test performance verification1.Insure that Mains input voltage is set to +/- 5% of rated input voltage.2.Lock to an External SPDIF source Play Music file / source.3.Insure Display, Knob and Buttons function correctly.4.Confirm R/C function.5.Insure audio is replayed correctly (Headphones can be

18、 used).6.Soak test for 8Hours.7.Insure Display and Buttons function correctly.8.Insure audio is replayed correctly (Headphones can be used).9.Inspect internals of Unit for Blown Electrolytic capacitors Blown SMD Components etc.1.Set to COAX1, (Set Digital Generator on AP to 44.1KHz, 24 Bit, Dither,

19、997Hz, 0dB).2.Check Unit is “Locked” and indicates 44.1kHz Freq. (As indicated on Display).3.Check L & R SE Audio Outputs, Level 2.1V RMS (+/- 0.1dB).4.Check L & R SE Audio THD, 0.0025% Max (Norm 0.001%).5.Set AP to 997Hz -60dB, check L&R SE, SNR 54dB (=114dB).6.Set AP to -120dB 997Hz, Check L&R SE

20、outputs, DC Level 58dB (=118dB).11. Set AP to 44.1KHz, 24 Bit, Dither, 997Hz, 0dB.12. Confirm COAX2, Optical 1&2 function (Locked indicated on display & Audio Signaloutput).13. Confirm USB function, replay Stereo 997Hz 0dB on PC media player, confirm SE Level2.1V RMS (+/- 0.1dB), Audio THD, 0.0025%

21、Max (Norm 0.001%).14. Confirm R/C function.15. Test Optical and BNC Digital CD Output function (with AP or external DAC), DigitalOutput greater then =500mV Pk-Pk into 75 Ohms.16. Completion of Post Soak Test performance verification.1.Connect to audio System (via RCAs), Lock to external SPDIF or USB

22、 Source,confirm no undue noise function OK.2.Test all Digital inputs (Coax1, 2, Optical 1 & 2) and USB (With PC) repeat listeningtest.3.Confirm Remote function.4.Completion of Listening tests.1.Restore unit to Factory defaults.2.End of Shipping settings.Listening TestShipping SettingsMAINTENANCE ALI

23、GNMENT PROCEDUREM-DACM-DAC-Ageing Test Step-P2/217ASSEMBLY PARTS LISTM-DACM-DAC-Product Parts List-P1/118No.P/NPART NAMEDESCRIPTIONQTY UNIT1340-1018420000Rknobblack painted1PCS2243-1009410000Rplastic pad6*9*6.5MM，1PCS3206-1018420002Rlens85.3*39.3*1.5mm, transparent1PCS4300-1018420001-1Rfront panelsi

24、lkscreened, light grey(BLACK)1PCS5263-0074020052REVA74*2*0.5 (thickness)mm，EVA，black3PCS6262-0500005010Rdustproof pad5*50*0.25dustproof6PCS7226-0330050331Rfeet pad33*5*3 (thickness) mm，PORON，black2PCS8308-1018420000Rmetal blockpainted1PCS9588-3000066037RscrewM3*619PCS10231-2000000052RfeetRF11-5I 、SI

25、LICON、black4PCS11309-1018420001-1Rmain chassisblack anodized1PCS12534-3002100906RscrewM3*1010PCS13300-1018420002-1Rback panelsilkscreened, light grey(BLACK)1PCS14524-2023061001RscrewM2*6.51PCS15524-2923091016RscrewM3*9.58PCS16215-1027420001Rbutton capsilver painted,ABS757#1PCS17205-1018420000Rbutton

26、 bracket30*40*4mm,ABS1PCS18231-3007005102Rrubber washer5*7*1mm4PCS19340-1018420001Rfunction buttonblack painted4PCS20500-3050240300ARnutM3 NI2PCS21215-1027420000Rpower buttonsilver painted,ABS757#1PCS22262-0200013011Rwasher20*13*2.6MM，black2PCSASSEMBLY PARTS LISTM-DACM-DAC-Packing Parts List-P1/119N

27、o.P/NPART NAMEDESCRIPTIONQTY UNIT1401-1018420000RTop FoamEPE white 455*330*35mm， ROHS1PCS2401-1018420001-1RBottom FoamEPE white 455*330*90mm， ROHS1PCS3409-1018420000ROuter CartonAUDIOLAB MDAC K=K，inner size:455*330*127MM1PCSELECTRONIC PARTS LISTM-DAC412274-2001900168RWasherFR4 1.6 ，17.5*18MM1PCS4222

28、77-0130000000RWasherTW-13610PCS432323-1117000331RCrystal Base Insulator4.4*10.8*1.0HC-49 QW- 11PCSX1a442324-0180130100RMicaTO-220 18*13MM10PCS452538-3001080301RScrewM3x810PCS462604-1018420000RHeatsinkH40mm x W23mm x D15.5mm10PCS20M-DAC Electronic Bom-P1/5No.LEVELP/NPARTNAMEDESCRIPTIONQTYUNITLOCATION

29、11022-1000023405RPower adaptorINPUT=AC120VOUTPUT=AC13.8V*2,0.5A,USA Mains Cable1PCS21032-1018420000RRemoteAUDIOLAB MDAC ，black 180*31PCS31036-1307015000RBattery1.5V SIZE AAA2PCS41055-4324260066RFFC Cable24pin PH=1MM L=280MM C type 0.1mmblack1PCS51088-1018420000RMain board PCBAMain board PCBA1PCS6200

30、6-1014051123-3RElectrolytic Capacitor100uF/10V 20% D5*11MM PH=2.5MM LelonRXY series 10511PCSC48.C49.C56.C57.C68.C69.C91.C92.C96.C99.C10172006-1014060833RElectrolytic Capacitor100uF16V 6.3*8 20% 105 Lelon OCRZseries4PCSC120.C121.C130.C13182006-1014061143-3RElectrolytic Capacitor100uF/25V 20% D6.3*11M

31、M PH=5MM LelonRXY series5PCSC75.C77.C79.C81.C8392006-1024080803RElectrolytic Capacitor1000uF 4V8*8 20% 105 Lelon OCRZ series25PCSC25.C26.C27.C28.C29.C30.C31.C32.C33.C34.C35.C36.C37.C38.C39.C40.C41.C42.C63.C64.C65.C66.C67.C87.C88102006-1024081213RElectrolytic Capacitor1000uF,6.3V,105DegC,8mmDia,12mmH

32、,3.5mmPitch,Lelon,20%4PCSC43.C45.C51.C53112006-2214061133-1RElectrolytic Capacitor220uF/16V 20% D6.3*11MM PH=5MM LelonRXY series4PCSC76.C78.C80.C82122006-3314061123-1RElectrolytic Capacitor330uF/10V 20% D6.3*11MM PH=5MM LelonRXY series11PCSC58.C59.C61.C70.C71.C74.C84.C94.C97.C100.C103.132006-3914081

33、223RElectrolytic Capacitor390uF 10V 8mm Dia 12mm H 3.5mm PitchLelon OCRZ series4PCSC124.C125.C134.C135.142006-4714061113-1RElectrolytic Capacitor470uF/6.3V 20% D6.3*11MM PH=5MM LelonRXY series15PCSC44.C46.C47.C50.C52.C54.C55.C60.C62.C72.C73.C85.C86.C89.C90152006-4724123533RElectrolytic Capacitor4700

34、u/16V 20% Lelon RZD 12.5*35mm 10524PCSC104.C105.C106.C107.C108.C109.C110.C111.C112.C113.C114.C115.C116.C117.C118.C119.C126.C127.C128.C129.162006-5604051130RElectrolytic Capacitor56uF/16V 20% D5*11mm 105 Lelon RXYseries4PCSC93, C95, C98, C102172016-1017000001RCapacitor100pF/400V 5% PH=2.5MM 2.5*7*4.6

35、MMWIMA FKP024PCSC9.C12.C19.C24182016-1021132201QRCapacitorFKP2 1000PF/100V 2.5% WIMA PCM58PCSC3.C4.C5.C6.C15.C16.C20.C21192016-1031130001RCapacitor10NF/100V 2.5% EVOXRIFA(PFR5103J100J13L4)8PCSC1.C2.C7.C10.C13.C14.C17.C22202016-3317000001RCapacitor330pF/400V 5% PH=2.5MM 2.5*7*4.6MMWIMA FKP024PCSC8.C1

36、1.C18.C23212017-1240000000RICL7812CV TO-220 ST2PCSU58.U59222017-1377000000RICMC7805CTG TO-220 ON5PCSU53.U54.U55.U56.U57232017-1378000000RICLM337T（1.5A） TO-220 NS2PCSU64.U67242017-1380000000RICLM317T(1.5A) TO-220（ST）3PCSU63.U65.U66252017-7510000000RICL7808 +8vTO220 ST1PCSU60262018-9807912111RICL7912C

37、V TO-220 ST2PCSU61.U62272020-1022120017RPotentiometer1K 100ppm/ 10% WI3362NOXOX-PA2-B1K4PCSRV1.RV2.RV3.RV4282024-1120101011RRelayHJR1-2C-12VDC3PCSRLY2.RLY5.RLY7292044-4850000000RDual 3.5mm Stereo JackDual Vertical PCB Mount 3.5mm1PCSCN7302044-4860000000RRCA + Toslink ComboCombined 16Mbps Optical rec

38、eiver & Goldplated RCA JACK JSR15832PCSCN3.CN4312044-5500000000RRCA Jack BlackPCB Mount 180Deg Black AEC Connectors1PCSCN8322044-5510000000RRCA Jack BlackPCB Mount 180Deg RED AEC Connectors1PCSCN12332044-5520000000RUBSRA-004USB, Thur Hole, Gold Plated1PCSCN6342044-5550000000RXLR JackPCB Mount 90Deg

39、XLR Jack LX-1601H-32PCSCN11.CN9352044-5690000000RRCA + Toslink ComboCombined 16Mbps Optical & Gold platedRCA JACK JSR15831PCSCN5362049-1309223000R6.35mm Stereo JackVertical PCB Mount 6.35mm Stereo Jack1PCSCN13372050-0400000000RTransistor Clip10*6MM TR-15PCSU53 Support.U54 Support.U55Support.U56Suppo

40、rt.U57 Support.382056-4110000000RConnector10PIN 2.54 Box Header1PCSCN1392059-8400002331RCrystalCrystal 84MHz AT5thOT,+/-30PPM HC-49/U3P(Centre Ground PIN)1PCSX1402271-0180000000RPlastic PostKangyang PDC-5.5D H=5.5 MM1PCSELECTRONIC PARTS LISTM-DAC21M-DAC Electronic Bom-P2/5No.LEVELP/NPARTNAMEDESCRIPT

41、IONQTYUNITLOCATION472088-1018420001RMain board PCBAMain board PCBA(SMD componentsassembled)1PCS483002-0000011050RResistor0R 0603 1% 50V2PCSR346.R353.493002-0000032010RResistorOR 1/8W 1%8PCSR14.R24.R46.R56.R79.R88.R110.R120503002-0000033050RResistor1206 0R 1/8W 5%2PCSR287.R290513002-1000011010RResist

42、or10K 1% 0603 50V29PCSR309.R313.R314.R316.R320.R322.R323.R329.R330.R332.R338.R340.R344.R364.R369.R379.R386523002-1000032010RResistor10 1/8W 1% 08054PCSR20.R51.R84.R115533002-1001021010RResistorRES 100 OHM 1/10W 1% 060328PCSR11.R12.R21.R44.R45.R52.R76.R77.R85.R108.R109.R116.R308.R319.R333.R339.R341.R

43、345.R348.R349.R350.R351543002-1001032010RResistor100 1/8W 1% 08054PCSR19.R55.R83.R119553002-1001033010RResistor100R 1% SMD 06031PCSR406563002-1002049010RResistor1K MELF 0204 1% 250V 1/4W8PCSR2.R5.R34.R37.R66.R69.R98.R101573002-1003032010RResistor10K 1/8W 1% 08056PCSR137.R138.R288.R289.R291.R29258300

44、2-1004021010RResistorRES 100K OHM 1/10W 1% 06039PCSR307.R310.R311.R317.R318.R326.R327.R342.R343.593002-1005021010RResistorRES 1M OHM 1/10W 1% 06031PCSR398603002-1100021010RResistor110R, 1%, 0603, 1/10W1PCSR377613002-1204032010RResistor0805 120K 1/8W 1% ROHS4PCSR25.R57.R89.R121623002-1301032010RResis

45、tor130R 1/8W 0805 1%8PCSR26.R28.R58.R60.R90.R92.R122.R124633002-1500021010RResistor15R, 1%, 0603, 1/10W3PCSR306.R334.R370643002-1500032010RResistor150R 1/8W 1% 08051PCSR305653002-1502021010RResistorRES 1.5K OHM 1/10W 1% 06031PCSR382663002-1503032010HRResistor15K 1% 100PPM 0805 1/8W VISHAYCRCW080515K

46、00FKEA2PCSR300.R303673002-1801032010RResistor180 1/8W 1% 08058PCSR15.R16.R47.R48.R81.R82.R111.R112683002-1803071010RResistor18K 0603 1% 1/16W1PCSR380693002-2200009010RResistor22R MELF 0204 1% 1/2W8PCSR27.R29.R59.R61.R91.R93.R123.R125.703002-2200021010RResistor22R 0603 1/10W 1%1PCSR408713002-22000320

47、10RResistor22 1/8W 1% 08051PCSR304723002-2201021010RResistor220R 0603 1/10W 1%1PCSR376733002-2201032010RResistor220 1/8W 1% 08053PCSR299.R302.R355743002-2202021010RResistorRES 2.2K OHM 1/10W 1% 06036PCSR315.R321.R324.R325.R331.R387753002-2203032010RResistor22K 1/8W 1% 080510PCSR10.R22.R42.R53.R74.R8

48、6.R106.R117.R356.R360763002-2209049010RResistor220R MELF 0204 1% 1/2W16PCSR1.R4.R7.R8.R33.R36.R38.R40.R65.R68.R71.R72.R97.R100.R103.R104.773002-2261032010RResistor226R, 1%, 0805, 1/8W1PCSR365783002-2700061010RResistor27R, 1%, 0603, 1/10W4PCSR312.R328.R381.R383793002-2702032010RResistor2.7K 1/8W 1% 0

49、8054PCSR130.R132.R134.R136.803002-3092061010RResistor3.09K, 1%, 0603, 1/10W1PCSR384813002-3300011010QRResistor33R 1/16W 1%1PCSR335823002-3301032010RResistor330 1/8W 1% 08051PCSR301833002-3901032010RResistor390 1/8W 1% 08051PCSR366843002-4700021010RResistor47R 0603 1/10W 1%3PCSR336.R337.R375853002-47

50、00059010RResistor47R MELF 0204 1% 1/2W8PCSR3.R6.R35.R39.R67.R70.R99.R102863002-4701021010RResistor470R 0603 1/10W 1%1PCSR385873002-4701032010RResistor470 1/8W 1% 08054PCSR129.R131.R133.R135883002-4702021010RResistorRES 4.7K OHM 1/10W 1% 06036PCSR399.R402.R403.R405.R412.R418893002-4703032010RResistor