SERVICE MANUAL - Nexo

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NXAMP4x46. Wiring of the PA unitConnect the wire to the CN401. (Fig. 18, 19, 20 and 21) CN401RED Fig. 18 NOTE: The wire to be connected is WK02080.Install this PA unit on the upper left side ofenclosure.Hereafter, this unit is called PA unit of CH1. CN401BLUE Fig. 19 NOTE: The wire to be connected is WK17090.Install this PA unit on the upper right side ofenclosure.Hereafter, this unit is called PA unit of CH2. 12
NXAMP4x4CN401YELLOW Fig. 20 NOTE: The wire to be connected is WK17100.Install this PA unit on the lower left side ofenclosure.Hereafter, this unit is called PA unit of CH3. CN401GREEN NOTE: The wire to be connected is WK17110.Install this PA unit on the lower right side ofenclosure.Hereafter, this unit is called PA-UNIT of CH4.Fig. 21 * The following figure describes a layout drawing ofthe PA units seen from the front panel. (Fig. 22) CH1REDPSANHACH2BLUECH3YELLOWPSANHBFig. 22 CH4GREEN13
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: NXAMP4x4d, e) Fix the wires to the
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 and 38: ■ LSI PIN DESCRIPTION NXAMP4x4
Page 39 and 40: NXAMP4x4CS4272-CZZR (X8487A0)CODECC
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 85 and 86:
NXAMP4x4
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NXAMP4x4
Page 89 and 90:
NXAMP4x45) Click the [Create] butto
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NXAMP4x4 91
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NXAMP4x4■ OVERALL ASSEMBLY 1/2 8
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NXAMP4x4■ OVERALL ASSEMBLY 2/2 2
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NXAMP4x4REF NO. PART NO. DESCRIPTIO
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Page 101 and 102:
NXAMP4x4■ LOCATIONS OF HEAT SINK
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NXAMP4x4■ HEAT SINK UNIT L100 PS
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NXAMP4x4■ HEAT SINK UNIT L60 PSA
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NXAMP4x4■ HEAT SINK UNIT L50 PSA
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NXAMP4x4■ HEAT SINK UNIT MP-5 PA
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NXAMP4x4■ ELECTRICAL PARTS REF NO
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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
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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
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Page 143 and 144:
Page 145 and 146:
HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
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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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