SERVICE MANUAL - Nexo

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NXAMP4x4■ IC BLOCK DIAGRAM 74HCT273PW,118 (X8681A0)D-type Flip FlopPN-AN: IC002, 00374LVC169PW,118 (X8482A0)Binaly CounterCONTROL: IC044, 045D0D1D2D3MR 1Q0 2D0 3D1 4Q1 5Q2 6D2 7D3 8Q3 9GND 1020191817161514131211V CCQ7D7CPD6Q6MRQ5D5D4Q4CPD4DCPFF1QR DQQ0D5DCPFF2QR DQQ1D6DCPFF3QR DQQ2D7DCPFF4QR DQQ3U/DCPD0D1D2D3CEPGND12345678161514131211109V CCTCQ0Q1Q2Q3CETPEDCD134D QCP QD QCP Q14Q013Q1DQDQDQDQD25D QCP Q12Q2CPFF5R DQCPFF6R DQCPFF7R DQCPFF8R DQD36D QCP Q11Q3PE9Q4Q5Q6Q7CEPCET710CP2U/D115TC74HCT4514PW,118 (X8630A0)DecoderPN-AN: IC004-007CS3318-CQZ (X8486A0)Volume ControllerCONTROL: IC001REFO1OUT1VA-VA+OUT2REFO2IN2REFI2REFI3IN3REFO3OUT3LEA 0A 1Q 7Q 8Q 5Q 4Q 3Q 1Q 2Q 0GND123456789101112242322212019181716151413V CCEA 3A 2Q 10Q 11Q 8Q 9Q 14Q 15Q 12Q 13A 0A 1A 2Q 0S D QQ1latch1QQ2R DQ 3Q 4S DQQ5latch2QQ6R DQ 7Q 8IN1REFI1RESETMUTESCL/CCLKSDA/MOSIAD0/CSENOutDGNDVDREFI8IN81234567891011124813REFO84714OUT84615VA+VA- 1645OUT7 1744REFO7 1843IN7 1942REFI7 20414021REFI83922IN63823REFO63724OUT6363534333231302928272625VA-VA+OUT5REFO4IN4REFI4REFI5IN5REFO5OUT5VA-VA+S DQQ 9latch3QR DQ 108-channelAnalogInputs8V to 9V5+3.3VQ 11A 3Q 12I 2C/SPISerialControlI 2 C/SPIControlPort38-channelAnalogOutputsS DQQ 13Zero CrossingDetectorLElatch4QR DQ 14EQ 1538
NXAMP4x4CS4272-CZZR (X8487A0)CODECCONTROL: IC012, 013DSPB56371AF180 (X8489A0)DSPCONTROL: IC022, 0232.5V to 5V3.3V to 5V5V52 121211Hardware orI2C/SPIControl DataResetSerialAudioIntputSerialAudioOutputLevel Translator Level TranslatorRegistor/HardwareConfigurationPCM Serial Interface/LoopbackVolumeControlVolumeControlMixerInternal Voltage InternalReferenceOscilatorSelectableInterpolation ModulatorFilterSelectableInterpolation ModulatorFilterHigh Pass Filter and LOW-LatencyDC Offset Calibration Anti-Alias FilterHigh Pass Filter and LOW-LatencyDC Offset Calibration Anti-Alias FilterExternalMute ControlSwitched CapasitoDAC and FilterrSwitched CapasitoDAC and FilterrMultibitOversamplingADCMultibitOversamplingADCLeft andRight MuteControlsLeftDifferentialOutputRightDifferentialOutputLeftDifferentialInputRightDifferentialInput2SHIInterfaceTripleTimerDAXAddressGenerationUnitSix ChannelDAM UnitBootstrapROMInternalDataBusSwitchESAI ESAI_1Interface InterfacePIO_EBGPIOPeripheralExpansion AreaEFCOPMemory Expansion AreaProgram X Data Y DataRAM RAM RAM4K x 24 36K x 24 48K x 24ROM ROM ROM64K x 24 32K x 24 32K x 24PM_EBYABXABPABDAB24-BitDSP56300CoreDDBYDBXDBPDBGDBXM_EBYM_EBClockGeneratorPLLProgramInterruputControllerProgramDecodeControllerProgramAddressControllerData ALU24 x 24+56 56-bit MACTwo 56-bit Accumulators56-it barrel ShifterPowerMngmnt.JTAGOnCE TM4IR2110 (X2382A04)DriverPSANH: IC302, 303EXTALRESETPINIT/NMIMODA/IRQAMODB/IRQBMODC/IRQCMODD/IRQDLO114VDD9HVLEVELSHIFTUVDETECTRQ6VBCOMVCC231312VSSLINHIN10R SQVDD/VCCLEVELSHIFTPULSEGENPULSEFILTERRS75HOVS411SDSD113VCCVSVBHO5671098HINVDDLINVSS1213RSQVDD/VCCLEVELSHIFTUVDETECTDELAY1LO2 COMLD1117STR (X8495A0)RegulatorCONTROL: IC024MAX3221CPWR (X2757A0)RS-232C DriverCONTROL: IC041VOLTAGEGENERATORCURRENTGENERATORVINENC1+V+C1–C2+C2–V–RIN12345678161514131211109FORCEOFFV CCGNDDOUTFORCEONDININVALIDROUTDIN 1113 DOUTTHERMALCOMPENSATIONTHERMALPROTECTIONVOUTFORCEOFF 16FORCEON 12Auto-powerdown10 INVALIDROUT9 8RINGND1EN39
Page 1 and 2: SERVICE MANUAL■ CONTENTS PANEL LA
Page 3 and 4: NXAMP4x4■ PANEL LAYOUT • Front
Page 5 and 6: NXAMP4x4■ SERVICE PRECAUTIONS Saf
Page 7 and 8: NXAMP4x4■ OVERALL ASSEMBLY WIRING
Page 9 and 10: NXAMP4x43. Wiring of the FANConnect
Page 11 and 12: NXAMP4x4d, e) Fix the wires to the
Page 13 and 14: NXAMP4x4CN401YELLOW Fig. 20 NOTE:
Page 15 and 16: NXAMP4x4b-3) Then fasten these wire
Page 17 and 18: NXAMP4x4At the stage as shown in Fi
Page 19 and 20: NXAMP4x4o) Fasten the wires (WK0208
Page 21 and 22: NXAMP4x48. Color of the connectors
Page 23 and 24: NXAMP4x412. Confirmation of Switch
Page 25 and 26: NXAMP4x4■ DISASSEMBLY PROCEDURES
Page 27 and 28: NXAMP4x43. PSANHA Circuit Board(Tim
Page 29 and 30: NXAMP4x45. PSANHB Circuit Board(Tim
Page 31 and 32: NXAMP4x48. Upper left (CH1) PA unit
Page 33 and 34: NXAMP4x412. Front Panel Assembly(Ti
Page 35 and 36: NXAMP4x416. Lower left DC Fan(Time
Page 37: ■ LSI PIN DESCRIPTION NXAMP4x4
Page 41 and 42: NXAMP4x4NJU7630-M (X8682A0)Regulato
Page 43 and 44: NXAMP4x4SN74LVC157APWR (X6786A0)Dat
Page 45 and 46: NXAMP4x4• INANH Circuit Boardto C
Page 47 and 48: NXAMP4x4• CONTROL Circuit BoardAA
Page 49 and 50: NXAMP4x4• CONTROL Circuit BoardBP
Page 51 and 52: NXAMP4x4• OUTANH Circuit BoardPat
Page 53 and 54: NXAMP4x4• PN-AN Circuit BoardAEnc
Page 55 and 56: NXAMP4x4• PN-AN Circuit BoardBPat
Page 57 and 58: NXAMP4x4• PAANH Circuit BoardAA't
Page 59 and 60: NXAMP4x4• PSANHA, PSANHB Circuit
Page 61 and 62: NXAMP4x4• PSANHA, PSANHB Circuit
Page 63 and 64: NXAMP4x4• NX-DFLT Circuit BoardEx
Page 65 and 66: NXAMP4x43. Operation3-1. Entry of t
Page 67 and 68: NXAMP4x4Switch the GPI jig to the G
Page 69 and 70: NXAMP4x44-15. ANALOG testPress the
Page 71 and 72: NXAMP4x4■ 71
Page 73 and 74: NXAMP4x4 73
Page 75 and 76: NXAMP4x4 7
Page 77 and 78: NXAMP4x4
Page 79 and 80: NXAMP4x41-5. Other0 dBu is defined
Page 81 and 82: NXAMP4x44-7. Channel separation1) G
Page 83 and 84: NXAMP4x4■
Page 89 and 90:
NXAMP4x45) Click the [Create] butto
Page 91 and 92:
NXAMP4x4 91
Page 93 and 94:
NXAMP4x4■ OVERALL ASSEMBLY 1/2 8
Page 95 and 96:
NXAMP4x4■ OVERALL ASSEMBLY 2/2 2
Page 97 and 98:
NXAMP4x4REF NO. PART NO. DESCRIPTIO
Page 99 and 100:
Page 101 and 102:
NXAMP4x4■ LOCATIONS OF HEAT SINK
Page 103 and 104:
NXAMP4x4■ HEAT SINK UNIT L100 PS
Page 105 and 106:
NXAMP4x4■ HEAT SINK UNIT L60 PSA
Page 107 and 108:
NXAMP4x4■ HEAT SINK UNIT L50 PSA
Page 109 and 110:
NXAMP4x4■ HEAT SINK UNIT MP-5 PA
Page 111 and 112:
NXAMP4x4■ ELECTRICAL PARTS REF NO
Page 113 and 114:
Page 115 and 116:
NXAMP4x4CONTROLREF NO. PART NO. DES
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
NXAMP4x4PAANHREF NO. PART NO. DESCR
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
NXAMP4x4CIRCUIT DIAGRAM■ CONTENTS
Page 133 and 134:
KJIHGFEDCBANXAMP4x4■ WIRING DIAGR
Page 135 and 136:
HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 2
Page 137 and 138:
HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 4
Page 139 and 140:
QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
Page 147 and 148:
Page 149 and 150:
LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 151 and 152:
LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 153:
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SERVICE MANUAL - Nexo

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