Arcam-DivaAVR200-avr-sm维修电路原理图.pdf

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1、AVR200DiVA AVR200 Surround Sound ReceiverService Manual ARCAMARCAMIssue 1.0RadioFans.CN 收音机爱 好者资料库SERVICE MANUALA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0SURROUND SOUND RECEIVERCONTENTSPageSPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 . . .2-3DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . .6ADJUSTMENT POINTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7INSTRUMENT SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8ALIGNMENT PROCEDURES

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . .10-20SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-40IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41-49ELECTRICAL PARTS LIST . . . . . . . . . . . .

6、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40-67RadioFans.CN 收音机爱 好者资料库SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 2 -POWER AMPLIFIER AND PREAMPLIFIER SECTIONRated distortion(THD 20Hz-20 kHz FL/C/FR) 0.08%(THD 20Hz-20 kHz SL/SR) 0.3%Input Sensitivity(ref. 8

7、 ohms, 1 kHz)180+/-30 mVS/N Ratio(A-wtd, 1KHz, 1W, 8 ohm) -75 dB(A-wtd, 1KHz, 80W, 8 ohm)FL/FR/C 92 dBSL/SR -90 dBFrequency Response(20 Hz - 20 kHz)0 0.8 dBChannel Balance(1 dB to -40 dB, 1 kHz) 2 dB(-41 dB to -50 dB, 1 kHz) 3 dBAudio muting at 1kHz 53 dBHeadphone O/P in 0.1%, 600 ohm load, CD in 50

8、0mV, 1 kHz 10VSubwoofer out, 500mV in(THD at 2V O/P, 100 Hz) 0.5%(S/N at 2V O/P, 100 Hz) 80 dBCrosstalk(2V input, 10W, 1 kHz) -68 dBContinuous average power output (L/R/C RL/RR 8ohms)80 WControlsBass(at 500mV in, 1W out, 100 Hz) 9 dBTreble(at 500mV in, 1W out, 10 kHz) 9 dBSURROUND SECTIONChannel sep

9、arationI/p mode : L, R: 1V in, 1 kHz, Ch R, L 45 dB: o/p at unexpected, 1 kHz, Ch C 35 dBI/p mode : L= -R: 1V in, 1 kHz, Ch R, L 28 dB: o/p at unexpected, 1 kHz, Ch C 30 dBI/p mode : L= R: 1V in, 1 kHz, Ch R, L 45 dB: o/p at unexpected, 1 kHz, Ch SL, SR 30 dBFrequency ResponseI/p mode : L, R: 1V in,

10、 1W, Ch R, L40Hz0 1.5 dB20kHz0 0.8 dBI/p mode : L= R: 1V in, 1W, Ch C300Hz0 0.8 dB20kHz0 0.8 dBI/p mode : L= -R: 1V in, 1W, Ch SL, SR30Hz0 1.0 dB6.5kHz-3 1.0 dBS/N Ratio ( 200mV in, 1, A-WTD w/ 1k termination)I/p mode : L, R: 1 kHz, Ch L, R 65 dBI/p mode : L=R: 1 kHz, Ch C 65 dBI/p mode : L=-R: 1 kH

11、z, Ch SL, SR 65 dBTHD (2.2V in, 1W, w/ 80 kHz LPF, 1 kHz) 0.2%AC-3/DTS SECTIONFrequency ResponseFL, FR, C, SL, SR:200Hz0 0.8 dB20kHz0 0.8 dBDistortion 1W all channels0.08%S/N 1 W ( CCIR/ARM, 200 Hz NOTCH & 400 Hz HPF) 85 dBPROLOGIC II AUDIOCenter Width Control (Use track 2 from PLII Audio Test CD ve

12、r1.0)SPECIFICATIONStepL/RC0-31dB0.0dB1-12dB-0.6dB2-9.6dB-1.1dB3-7.6dB-1.8dB4-4.8dB-4.6dBStepL/RC5-4.1dB-6.6dB6-3.6dB-9.0dB7-3.0dB-31dBSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 3 -Dimension Control (Use track 1 and 3 from PLII Audio Test CD ver1.0)AM TUNER SECTIONInput level

13、 is expressed as the reading in open-circuitof 75-ohm source impedance signal generatorUsable sensitivity (999/1000kHz) 30 dBS/N Ratio (5mV in) 38 dBTHD (5mV in) 3%IF Rejection (450 kHz) 36 dBImage Rejection (F+2xIF) 28 dBSelectivity 17 dBOutput130+/- 20mVLoop sensitivity (20dB S/N)999/1000 kHz 66 d

14、B603/600 kHz 66 dB1404/1400 kHz 66 dBFrequency response (100 - 2.3 kHz, 5mV) 6 dBFM TUNER SECTION*C*AHInput level is expressed as the reading in open-circuitof 75-ohm source impedance signal generatorUsable Sensitivity ( 98 MHz) 15 dB 15 dBSignal / Noise RatioMono 72 dB 72 dB(60 dB, IHF wtd)Stereo 6

15、6 dB 66 dBFrequency Response (20 Hz - 15 kHz, 60 dB)0 1.5 dB0 1.5 dBChannel Separation (60 dB)100 Hz 30 dB 30dB1 kHz 38 dB 38 dB10 kHz 30 dB 30 dBAlternate Channel Selectivity(40 dB, 400 kHz) 60 dB 45 dBCapture Ratio (40 dB) 3 dB 3 dBAM Suppression(60 dB, 100% Mod.FM, 30% Mod.AM) 48 dB 48 dBImage Re

16、jection (119.4 MHz) 85 db 40 dBI.F. Rejection ( 10.7 MHz) 78 dB 65 dBPilot Suppression (60 dB) 60 dB 60 dBTHD (60 dB, L=R 75 kHz for AH, 40 kHz Dev for C)Mono 0.25% 0.25%Stereo 0.35% 0.35%Auto-Search SensitivityOn 24 dB 24 dBOff 15 dB 15 dBRDS decode Sensitivity 26 dB 26 dBPHYSICAL SPECIFICATIONSDim

17、ensions (Width x Height x Depth)422 x 132 x 290mmNet weight14kg (31 lbs)Shipping weight16.7kg (37 lbs)StepCSLSR-3-31dB-7.8dB-31dB-2-31dB-11.5dB-31dB-1-31dB-19.5dB-31dB0-30dB-31dB-31dBStepCSLSR1-20.4dB-31dB-31dB2-14.0dB-31dB-31dB3-11.5dB-31dB-31dBSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0

18、 0 00 0 0 0 - 4 -DISASSEMBLY INSTRUCTIONS1. Remove machine screws M 4.0 x 6.0 ( 1 to 6 ) from the side panels.Remove tapping screw 3.0 x 8.5 ( 7 )from the back panel.Refer to Figure No.1.Figure No.12. Pull both sides of the TOP COVER slightly outwards 8 and tilt approx. 35 and then removein the dire

19、ction as indicated by the arrow 9 . Refer to Figure No.2.Figure No.2.7651324988SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 5 -WIRING DIAGRAMSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 6 -COAXIAL x3OPTICAL x2405374LS157M624476FPCom-VideoTrigger INPOWER

20、DOWNDetect Pin.For SPK off,Mute ON, VFD off.BLOCK DIAGRAMSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 7 -OSCRFADJUSTMENT POINTS DIAGRAM1. TUNER2. IDLE CURRENT - Front Amplifier & Surround Amplifier BoardSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 8 -INS

21、TRUMENT SETUP1. FM MEASUREMENTFig. 1Fig. 22. RDS MEASUREMENTFig. 33. AM MEASUREMENTFig. 4FMSIGNALGENERATORANTENNATERMINALOUTPUTTERMINALDISTORTIONANALYZERDISTORTIONANALYZERACVOLTMETEROSCILLOSCOPEACVOLTMETEROROSCILLOSCOPEACVOLTMETEROROSCILLOSCOPEOUTPUTTERMINALOUTPUTTERMINALLRANTENNATERMINALANTENNATERM

22、INALANTENNATERMINALAM LOOPANTENNA(Accessory)AM LOOPANTENNA60cmDIGITALMILLIVOLTMETERVT-J914FMSIGNALGENERATORAMSIGNALGENERATORFMSIGNALGENERATORRDSGENERATORFMSTEREOGENERATORP-901DCMILLIVOLTMETERUNITUNITUNITUNITALIGNMENT PROCEDURESAMPLIFIER SECTIONIdle CurrentStepItemConnectionAdjustmentAdjust for1Front

23、 Left ChannelVoltmeter to P502 on Front Amp BoardR5742mV0.2mV2Front Right ChannelVoltmeter to P501 on Front Amp BoardR5732mV0.2mV3Center ChannelVoltmeter to P503 on Front Amp BoardR5992mV0.2mV4Rear Left ChannelVoltmeter to JP801 on Surround Amplifier BoardR8672mV0.2mV(PCB N0901C-AMP2)5Rear Right Cha

24、nnelVoltmeter to JP802 on Surround Amplifier BoardR8682mV0.2mV(PCB N091C-AMP2)SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 9 -FM/RDS SECTION- FM mono:1kHz, 75kHz devi., 60dB/V- FM stereo:1kHz, 67.5kHz devi., 60dB/VPilot signal 19kHz 7.5kHz devi.OUTPUTS- Connect the non-inducti

25、ve type resistor of 8 ohms to the all speaker terminals unless otherwise noted.ItemFMIF/RFStereoDistortionStereoSeparationMutingLevelSignaloutputStep1DC voltmeterL9410100mV3DistortionanalyzerDistortionanalyzerOscilloscopeOscilloscopeL942R956R941MinimumMinimum2AC voltmeterIFT on thefront endIFT on th

26、efront endMaximumMaximumseparationConnectionof instrumentFig.1Fig.2Fig.2Fig.1Channel Lor R 1kHz99.0MHz1kHz 75kHz devi.65dBf (60dB)99.0MHz Ext.mod. 65dBf(60dB)FM SGoutputStereo mod-ulator outputTuningfrequency99.0MHz99.0MHzChannel Lor R 1kHz99.0MHz Ext.mod. 65dBf(60dB)99.0MHz Ext. mod.65dBf(60dB)RDS

27、2% MOD99.0MHz 18dB99.0MHz99.0MHzRDSFig.399.0MHzOutputindicatorAdjustmentpointAdjustforRemarksFM MUTE/MODEswitch: ON/AUTORepeat the steps1 to 3 until no fur-ther adjustment isnecessary.FM MUTE/MODEswitch: ON/AUTODont turn morethan +/-180Repeat stereodistortion andstereo separationalignment untilTHD a

28、t minimumand separation atmaximum.Decode the RDS-Program Station.AM SECTIONAM Modulation:400Hz, 30%Step123522kHzor531kHz603kHz999kHz600kHz400Hz 30% mod.60dB/mAM SGoutputTuningfrequencyOutputindicatorAdjustmentpoint600kHz400Hz 30% mod.60dB/mACvoltmeterACvoltmeterDigitalDCvoltmeterL972OSC coilon RFblo

29、ck L971RF coilon RFblock L971Adjustfor1.30.2V (522kHz)1.350.2V (531kHz)MaximumMaximumIMPORTANT NOTES1. Show the software versionPress “DISPLAY”, “5.1 INPUT” and “VIDEO 4”.2. Toggle between PAL and NTSCPress “MEMORY” and “VIDEO 1”.3. Light up all the icon on the VFL.Press “DISPLAY”, “5.1 INPUT” and “

30、VIDEO 1”.4. Clear all tuner presetsPress “5.1 INPUT” and “VIDEO 1”.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 10 -PCB LAYOUTAUDIO BOARDCOMPONENT VIDEO BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 11 -AC-3 BOARD - Component SideSURROUND SOUND RECEI

31、VERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 12 -AC-3 BOARD - Solder SideSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 13 -AMP1 BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 14 -AMP2 BOARDSPEAKER BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2

32、 2 20 0 0 00 0 0 0 - 15 -KEY BOARD - Component SideKEY BOARD - Solder SideSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 16 -MAIN BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 17 -MULTI CHANNEL BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20

33、0 0 00 0 0 0 - 18 -TUNER BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 19 -S-VIDEO BOARDPSU BOARDSECONDARY BOARDSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 20 -GSW BOARDLED BOARDPHONE BOARDPOWER BOARDVOLUME BOARDSWITCH BOARDTONE BOARDSURROUND SOUND

34、RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 22 - 21 -SCHEMATIC DIAGRAMAC-3 / DTSNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/10WUNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%.UNLESS OTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 23 - 24 -A

35、MP1NOTE: 1. RESISTORS ARE CARBON FILM 5%1/8W UNLESSOTHERWISE SPECIFIED.MF - METAL FILM2. CERAMIC CAPACITORS ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 26 - 25 -AMP2NOTE: 1. RESISTORS ARE CARBON FILM 5%1/8W UNLESSOTHERWISE SPECIFIED.MF -

36、 METAL FILM2. CERAMIC CAPACITORS ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 27 - 28 -KEYNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8WUNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%.UNLESS OTHERWISE SPECIFIED.SURROUND SOUND R

37、ECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 30 - 29 -MULTI CHANNELNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESSOTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 31 - 32 -S-VIDEONOTE: 1. R

38、ESISTORS ARE CARBON FILM 5%1/8WUNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 34 - 33 -MAINNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESSOTHERWISE SPECIFIED.MF-METAL FILM2. CERAMIC CAPACI

39、TORS, ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 35 - 36 -TUNERNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR

40、R R R2 2 2 20 0 0 00 0 0 0 - 37 -AUDIONOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 38 -COMPONENT VIDEONOTE: 1. RESISTORS ARE CARBON FILM 5% 1/8

41、W UNLESS OTHERWISE SPECIFIED.2. CERAMIC CAPACITORS ARE 50V 10%. UNLESS OTHERWISE SPECIFIED.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 39 -REMSURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 40 -PSUNOTE: 1. RESISTORS ARE CARBON FILM 5% 1/8W UNLESS OTHERWISE

42、 SPECIFIED.MF - METAL FILM2. CERAMIC CAPACITORS ARE 50V 10%. UNLESS OTHERWISE SPECIFIED.3. COMPONENTS MARKED “” ARE SAFETY CRITICAL PARTS.SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 41 -IC BLOCK DIAGRAMAC3 BOARDU101: 74HC1511D32D23D14D05Y6W7ST16 VCC15 D414 D513 D612 D711 A10

43、B8GND9C1211109S713S614S515S41S32S23S141213141512347ST6W5YS0S7S7AS6S6S5S5S4S4S3S3S2S2S1S1S0S0BCAC3 BOARDU102: 74HC15741Y72Y93Y124Y151G134B103B62B52A31B21A113A144AA/B1A/BVCC1621AG1531B4A1441Y4B1352A4Y1262B3A1172Y3B108GND3Y9AC3 BOARDU104, U109, U116,U129, U134: NE5532 AMPLIFIER 1OUTPUTINVERTINGINPUTNON

44、-INVERTINGINPUTV AMPLIFIER 2V +OUTPUTINVERTINGINPUTNON-INVERTINGINPUT12348765+ + SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 42 -AC3 BOARDU103: CS5331AAINL8+-+-+-5674231AINRAGNDS/HComparatorMCLKSCLKLRCKSDATAComparatorVoltage ReferenceSerial Output InterfaceDigitalDecimationFi

45、lterDigitalDecimationFilterHighPassFilterHighPassFilterS/HVA+-LP FilterDACDACLP FilterAC3 BOARDU105: CS492627368-11,14-17185419762021373844434241403932829252622303132333435213 24112 23Parallel or Serial Host Interface24-BitDSP ProcessingFramerShifterInputBufferControllerCompressedData InputInterface

46、CMPDAT,SDATAN2CMPCLK,SCLKN2CMPREQ,LRCLKN2SCLKN1,STCCLK2LRCLKN1SDATAN1CLK1NCLKSELFILT2FILT1VAAGNDDGND1-3VD1-3XMT958AUDATA2AUDATA1AUDATA0LRCLKSCLKMCLKDCDDEXTMEM,GPIO8ABOOT,INTREQA1,SCDINA0,SCCLKSCDIO,SCDOUT,PSEL,GPIO9WR,DS,EMWR,GPIO10RD,R/W,EMOE,GPIO11CSDATA7-0,EMAD7-0,GPIO7-0RESETDigitalAudioInputInt

47、erfacePLLClock ManagerRAM InputBufferRAMProgramMemoryRAMProgramMemoryRAMOutputBufferOutputFormatterRAMProgramMemoryRAMProgramMemorySTCAC3 BOARDU106, U107: 74HC574D7DQCPFF8Q7D6DQCPFF7Q6D1D2 to D5DQCPFF2Q1D0CPOEDQCPFF1Q0SURROUND SOUND RECEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 43 -AC3 BOARDU

48、108: AT27C040VCCDATA OUTPUTSO0 - O7OE, CE ANDPROGRAM LOGICY DECODERX DECODEROUTPUTBUFFERSY-GATINGIDENTIFICATIONCELL MATRIXGNDVPPOECEA0 - A18ADDRESSINPUTAC3 BOARDU110: CS8414RXPRS422ReceiverClock & DataRecoveryDe-MuxAudioSerialPortRegistersMuxMuxVD+ DGNDVA+VA+FILTAGNDMCKM3M3 M2 M1 M0SDATASCKFSYNCCUVE

49、RFCS12/FCKSELC0/E0 Ca/E1 Cb/E2 Cc/F0 Cd/F1 Ce/F2REFCBLRXN91013166543227251528141111226232418171921202287AC3 BOARDU111-U113: CS4340RSTLRCKSDATADIF0DIF1MCLKMUTECDEM0De-emphasisExternalMute ControlInterpolationFilterDACAnalog FilterInterpolationFilterDACAnalog FilterSCLK/DEM1AOUTRAOUTLSURROUND SOUND RE

50、CEIVERA A A AV V V VR R R R2 2 2 20 0 0 00 0 0 0 - 44 -AC3 BOARDU114: 74HCU0411A14VAC21Y136A32A126Y42Y115A53A105Y63Y94A7GND84YAC3 BOARDU118, U119: 74HC00DIGITAL BOARDU762: 74HC00A1B1Y1A2B2Y2GNDVCCB4A4Y4B3A3Y31234567141312111098AUDIO BOARDU301: TC9273N2S11VSS26VDD27 S13S226 S24S325 S35S424 S46S523 S5