SERVICE MANUAL - Nexo

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NXAMP4x4e) Connect the wire (WK14210) of the PA unit (CH3) to theconnector (CN312) of the PSANHB circuit board. (Drawthe black tube to the PA unit side.)Fasten the wire (WK14210) and the wire of the FAN witha cord holder. (Fig. 22)f) Twist the wires (white, red, black) of the PA unit morethan two times, and connect them to the terminalsaccording to the wire color displayed on the PSAN circuitboard. Fasten these wires (white, red, black) and wire(WM04880) with a cord holder. (2 places)Then bend the wires (white, red, black), and fasten themwith a cord holder. (Fig. 22)g) Connect the wires (white, red, black) of PA unit to theterminals in the same manner as step f).Fasten these wires (white, red, black) and wire(WK16820) with a cord holder (2 places). And then,bend these wires (white, red, black) and fasten themwith a cord holder.Fasten the wires (WK14210, WK14200) and the wire ofFAN with a cord holder.h)h-1) Fasten the wires (WK68740, WK14200, WK66350)with a cord holder. e)g)g)g)g)f)f) f)h-1)Fig. 25 16
NXAMP4x4At the stage as shown in Fig. 26, connect thefollowing wires.CN313: WK68760CN201: WK68770CN202: WK14200 from OUTANH boardCN203: WK66350 from PSANHB boardh-2) After connecting the wire (WM15830) to it, installthe RS232-GPI circuit board to the enclosure.i) Twist the wires (yellow, brown) of the power switchassembly more than three times, and connect it to theconnector (CN103) of the PSANHA circuit board.j) Fasten these wires (WK17900, WK17910, WK94690 andWK02090) with a cord holder to the hexagonal spacer.k) Connect the wire of the AC-INLET according to the step“5. Wiring of the AC-INLET”.Note: Do not fasten the GND wire with a cord holder. j)h-2)k)i)Fig. 26 17
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: NXAMP4x4b-3) Then fasten these wire
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
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NXAMP4x4Switch the GPI jig to the G
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NXAMP4x44-15. ANALOG testPress the
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NXAMP4x4■ 71
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NXAMP4x4 73
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NXAMP4x4 7
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NXAMP4x4
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NXAMP4x41-5. Other0 dBu is defined
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NXAMP4x44-7. Channel separation1) G
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NXAMP4x4■
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NXAMP4x4
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NXAMP4x4
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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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NXAMP4x4CONTROLREF NO. PART NO. DES
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NXAMP4x4PAANHREF NO. PART NO. DESCR
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Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
NXAMP4x4CIRCUIT DIAGRAM■ CONTENTS
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KJIHGFEDCBANXAMP4x4■ WIRING DIAGR
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HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 2
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HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 4
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QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
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HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
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LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
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LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
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SERVICE MANUAL - Nexo

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